diff options
| author | Adam Hampson <ahampson@google.com> | 2013-01-28 18:30:11 -0800 |
|---|---|---|
| committer | Adam Hampson <ahampson@google.com> | 2013-01-29 08:57:31 -0800 |
| commit | 60ed380e961ed65bf2ddeb16d43121cdbeba6d3e (patch) | |
| tree | 479706642a2609a9a35dc0b682f7d68daca5febc | |
| parent | 6964b7897e5cd3ee03552bd22269c5e01697d828 (diff) | |
| download | libusb_aah-60ed380e961ed65bf2ddeb16d43121cdbeba6d3e.tar.gz | |
Add libusb v1.0.9
Change-Id: Ib2d76c36a6caffcf69d03a8798ca2c2222c85ae7
Signed-off-by: Adam Hampson <ahampson@google.com>
68 files changed, 25599 insertions, 0 deletions
@@ -0,0 +1,45 @@ +Copyright (C) 2007-2009 Daniel Drake <dsd@gentoo.org> +Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com> +Copyright (C) 2008-2012 Nathan Hjelm <hjelmn@users.sourceforge.net> +Copyright (C) 2009-2012 Pete Batard <pete@akeo.ie> +Copyright (C) 2010 Michael Plante <michael.plante@gmail.com> +Copyright (C) 2010-2012 Peter Stuge <peter@stuge.se> +Copyright (C) 2011-2012 Hans de Goede <hdegoede@redhat.com> +Copyright (C) 2012 Martin Pieuchot <mpi@openbsd.org> + +Other contributors: +Alan Ott +Alan Stern +Alex Vatchenko +Artem Egorkine +Aurelien Jarno +Bastien Nocera +Brian Shirley +David Engraf +David Moore +Felipe Balbi +Graeme Gill +Hans de Goede +Hans Ulrich Niedermann +Hector Martin +Hoi-Ho Chan +James Hanko +Konrad Rzepecki +Ludovic Rousseau +Martin Koegler +Martin Pieuchot +Mike Frysinger +Mikhail Gusarov +Orin Eman +Pekka Nikander +Peter Stuge +Rob Walker +Sean McBride +Sebastian Pipping +Stephan Meyer +Thomas Röfer +Toby Peterson +Trygve Laugstøl +Vasily Khoruzhick +Vitali Lovich +Xiaofan Chen diff --git a/Android.mk b/Android.mk new file mode 100644 index 0000000..ad12fcd --- /dev/null +++ b/Android.mk @@ -0,0 +1,40 @@ +# Copyright 2013 The Android Open Source Project +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +# This makefile builds both for host and target, and so all the +# common definitions are factored out into a separate file to +# minimize duplication between the build rules. + +LOCAL_PATH:= $(call my-dir) + +include $(CLEAR_VARS) + +LOCAL_SRC_FILES := \ + libusb/core.c \ + libusb/descriptor.c \ + libusb/io.c \ + libusb/sync.c \ + libusb/os/linux_usbfs.c \ + libusb/os/threads_posix.c + +LOCAL_C_INCLUDES := \ + $(LOCAL_PATH)/libusb \ + $(LOCAL_PATH)/.. + +LOCAL_SHARED_LIBRARIES := \ + libc + +LOCAL_MODULE:= libusb + +include $(BUILD_SHARED_LIBRARY) @@ -0,0 +1,504 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. It also counts + as the successor of the GNU Library Public License, version 2, hence + the version number 2.1.] + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +Licenses are intended to guarantee your freedom to share and change +free software--to make sure the software is free for all its users. + + This license, the Lesser General Public License, applies to some +specially designated software packages--typically libraries--of the +Free Software Foundation and other authors who decide to use it. You +can use it too, but we suggest you first think carefully about whether +this license or the ordinary General Public License is the better +strategy to use in any particular case, based on the explanations below. + + When we speak of free software, we are referring to freedom of use, +not price. Our General Public Licenses are designed to make sure that +you have the freedom to distribute copies of free software (and charge +for this service if you wish); that you receive source code or can get +it if you want it; that you can change the software and use pieces of +it in new free programs; and that you are informed that you can do +these things. + + To protect your rights, we need to make restrictions that forbid +distributors to deny you these rights or to ask you to surrender these +rights. These restrictions translate to certain responsibilities for +you if you distribute copies of the library or if you modify it. + + For example, if you distribute copies of the library, whether gratis +or for a fee, you must give the recipients all the rights that we gave +you. You must make sure that they, too, receive or can get the source +code. If you link other code with the library, you must provide +complete object files to the recipients, so that they can relink them +with the library after making changes to the library and recompiling +it. And you must show them these terms so they know their rights. + + We protect your rights with a two-step method: (1) we copyright the +library, and (2) we offer you this license, which gives you legal +permission to copy, distribute and/or modify the library. + + To protect each distributor, we want to make it very clear that +there is no warranty for the free library. Also, if the library is +modified by someone else and passed on, the recipients should know +that what they have is not the original version, so that the original +author's reputation will not be affected by problems that might be +introduced by others. + + Finally, software patents pose a constant threat to the existence of +any free program. We wish to make sure that a company cannot +effectively restrict the users of a free program by obtaining a +restrictive license from a patent holder. Therefore, we insist that +any patent license obtained for a version of the library must be +consistent with the full freedom of use specified in this license. + + Most GNU software, including some libraries, is covered by the +ordinary GNU General Public License. This license, the GNU Lesser +General Public License, applies to certain designated libraries, and +is quite different from the ordinary General Public License. We use +this license for certain libraries in order to permit linking those +libraries into non-free programs. + + When a program is linked with a library, whether statically or using +a shared library, the combination of the two is legally speaking a +combined work, a derivative of the original library. The ordinary +General Public License therefore permits such linking only if the +entire combination fits its criteria of freedom. The Lesser General +Public License permits more lax criteria for linking other code with +the library. + + We call this license the "Lesser" General Public License because it +does Less to protect the user's freedom than the ordinary General +Public License. It also provides other free software developers Less +of an advantage over competing non-free programs. These disadvantages +are the reason we use the ordinary General Public License for many +libraries. However, the Lesser license provides advantages in certain +special circumstances. + + For example, on rare occasions, there may be a special need to +encourage the widest possible use of a certain library, so that it becomes +a de-facto standard. To achieve this, non-free programs must be +allowed to use the library. A more frequent case is that a free +library does the same job as widely used non-free libraries. In this +case, there is little to gain by limiting the free library to free +software only, so we use the Lesser General Public License. + + In other cases, permission to use a particular library in non-free +programs enables a greater number of people to use a large body of +free software. For example, permission to use the GNU C Library in +non-free programs enables many more people to use the whole GNU +operating system, as well as its variant, the GNU/Linux operating +system. + + Although the Lesser General Public License is Less protective of the +users' freedom, it does ensure that the user of a program that is +linked with the Library has the freedom and the wherewithal to run +that program using a modified version of the Library. + + The precise terms and conditions for copying, distribution and +modification follow. Pay close attention to the difference between a +"work based on the library" and a "work that uses the library". The +former contains code derived from the library, whereas the latter must +be combined with the library in order to run. + + GNU LESSER GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License Agreement applies to any software library or other +program which contains a notice placed by the copyright holder or +other authorized party saying it may be distributed under the terms of +this Lesser General Public License (also called "this License"). +Each licensee is addressed as "you". + + A "library" means a collection of software functions and/or data +prepared so as to be conveniently linked with application programs +(which use some of those functions and data) to form executables. + + The "Library", below, refers to any such software library or work +which has been distributed under these terms. A "work based on the +Library" means either the Library or any derivative work under +copyright law: that is to say, a work containing the Library or a +portion of it, either verbatim or with modifications and/or translated +straightforwardly into another language. (Hereinafter, translation is +included without limitation in the term "modification".) + + "Source code" for a work means the preferred form of the work for +making modifications to it. For a library, complete source code means +all the source code for all modules it contains, plus any associated +interface definition files, plus the scripts used to control compilation +and installation of the library. + + Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running a program using the Library is not restricted, and output from +such a program is covered only if its contents constitute a work based +on the Library (independent of the use of the Library in a tool for +writing it). Whether that is true depends on what the Library does +and what the program that uses the Library does. + + 1. You may copy and distribute verbatim copies of the Library's +complete source code as you receive it, in any medium, provided that +you conspicuously and appropriately publish on each copy an +appropriate copyright notice and disclaimer of warranty; keep intact +all the notices that refer to this License and to the absence of any +warranty; and distribute a copy of this License along with the +Library. + + You may charge a fee for the physical act of transferring a copy, +and you may at your option offer warranty protection in exchange for a +fee. + + 2. You may modify your copy or copies of the Library or any portion +of it, thus forming a work based on the Library, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) The modified work must itself be a software library. + + b) You must cause the files modified to carry prominent notices + stating that you changed the files and the date of any change. + + c) You must cause the whole of the work to be licensed at no + charge to all third parties under the terms of this License. + + d) If a facility in the modified Library refers to a function or a + table of data to be supplied by an application program that uses + the facility, other than as an argument passed when the facility + is invoked, then you must make a good faith effort to ensure that, + in the event an application does not supply such function or + table, the facility still operates, and performs whatever part of + its purpose remains meaningful. + + (For example, a function in a library to compute square roots has + a purpose that is entirely well-defined independent of the + application. Therefore, Subsection 2d requires that any + application-supplied function or table used by this function must + be optional: if the application does not supply it, the square + root function must still compute square roots.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Library, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Library, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote +it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Library. + +In addition, mere aggregation of another work not based on the Library +with the Library (or with a work based on the Library) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may opt to apply the terms of the ordinary GNU General Public +License instead of this License to a given copy of the Library. To do +this, you must alter all the notices that refer to this License, so +that they refer to the ordinary GNU General Public License, version 2, +instead of to this License. (If a newer version than version 2 of the +ordinary GNU General Public License has appeared, then you can specify +that version instead if you wish.) Do not make any other change in +these notices. + + Once this change is made in a given copy, it is irreversible for +that copy, so the ordinary GNU General Public License applies to all +subsequent copies and derivative works made from that copy. + + This option is useful when you wish to copy part of the code of +the Library into a program that is not a library. + + 4. You may copy and distribute the Library (or a portion or +derivative of it, under Section 2) in object code or executable form +under the terms of Sections 1 and 2 above provided that you accompany +it with the complete corresponding machine-readable source code, which +must be distributed under the terms of Sections 1 and 2 above on a +medium customarily used for software interchange. + + If distribution of object code is made by offering access to copy +from a designated place, then offering equivalent access to copy the +source code from the same place satisfies the requirement to +distribute the source code, even though third parties are not +compelled to copy the source along with the object code. + + 5. A program that contains no derivative of any portion of the +Library, but is designed to work with the Library by being compiled or +linked with it, is called a "work that uses the Library". Such a +work, in isolation, is not a derivative work of the Library, and +therefore falls outside the scope of this License. + + However, linking a "work that uses the Library" with the Library +creates an executable that is a derivative of the Library (because it +contains portions of the Library), rather than a "work that uses the +library". The executable is therefore covered by this License. +Section 6 states terms for distribution of such executables. + + When a "work that uses the Library" uses material from a header file +that is part of the Library, the object code for the work may be a +derivative work of the Library even though the source code is not. +Whether this is true is especially significant if the work can be +linked without the Library, or if the work is itself a library. The +threshold for this to be true is not precisely defined by law. + + If such an object file uses only numerical parameters, data +structure layouts and accessors, and small macros and small inline +functions (ten lines or less in length), then the use of the object +file is unrestricted, regardless of whether it is legally a derivative +work. (Executables containing this object code plus portions of the +Library will still fall under Section 6.) + + Otherwise, if the work is a derivative of the Library, you may +distribute the object code for the work under the terms of Section 6. +Any executables containing that work also fall under Section 6, +whether or not they are linked directly with the Library itself. + + 6. As an exception to the Sections above, you may also combine or +link a "work that uses the Library" with the Library to produce a +work containing portions of the Library, and distribute that work +under terms of your choice, provided that the terms permit +modification of the work for the customer's own use and reverse +engineering for debugging such modifications. + + You must give prominent notice with each copy of the work that the +Library is used in it and that the Library and its use are covered by +this License. You must supply a copy of this License. If the work +during execution displays copyright notices, you must include the +copyright notice for the Library among them, as well as a reference +directing the user to the copy of this License. Also, you must do one +of these things: + + a) Accompany the work with the complete corresponding + machine-readable source code for the Library including whatever + changes were used in the work (which must be distributed under + Sections 1 and 2 above); and, if the work is an executable linked + with the Library, with the complete machine-readable "work that + uses the Library", as object code and/or source code, so that the + user can modify the Library and then relink to produce a modified + executable containing the modified Library. (It is understood + that the user who changes the contents of definitions files in the + Library will not necessarily be able to recompile the application + to use the modified definitions.) + + b) Use a suitable shared library mechanism for linking with the + Library. A suitable mechanism is one that (1) uses at run time a + copy of the library already present on the user's computer system, + rather than copying library functions into the executable, and (2) + will operate properly with a modified version of the library, if + the user installs one, as long as the modified version is + interface-compatible with the version that the work was made with. + + c) Accompany the work with a written offer, valid for at + least three years, to give the same user the materials + specified in Subsection 6a, above, for a charge no more + than the cost of performing this distribution. + + d) If distribution of the work is made by offering access to copy + from a designated place, offer equivalent access to copy the above + specified materials from the same place. + + e) Verify that the user has already received a copy of these + materials or that you have already sent this user a copy. + + For an executable, the required form of the "work that uses the +Library" must include any data and utility programs needed for +reproducing the executable from it. However, as a special exception, +the materials to be distributed need not include anything that is +normally distributed (in either source or binary form) with the major +components (compiler, kernel, and so on) of the operating system on +which the executable runs, unless that component itself accompanies +the executable. + + It may happen that this requirement contradicts the license +restrictions of other proprietary libraries that do not normally +accompany the operating system. Such a contradiction means you cannot +use both them and the Library together in an executable that you +distribute. + + 7. You may place library facilities that are a work based on the +Library side-by-side in a single library together with other library +facilities not covered by this License, and distribute such a combined +library, provided that the separate distribution of the work based on +the Library and of the other library facilities is otherwise +permitted, and provided that you do these two things: + + a) Accompany the combined library with a copy of the same work + based on the Library, uncombined with any other library + facilities. This must be distributed under the terms of the + Sections above. + + b) Give prominent notice with the combined library of the fact + that part of it is a work based on the Library, and explaining + where to find the accompanying uncombined form of the same work. + + 8. You may not copy, modify, sublicense, link with, or distribute +the Library except as expressly provided under this License. Any +attempt otherwise to copy, modify, sublicense, link with, or +distribute the Library is void, and will automatically terminate your +rights under this License. However, parties who have received copies, +or rights, from you under this License will not have their licenses +terminated so long as such parties remain in full compliance. + + 9. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Library or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Library (or any work based on the +Library), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Library or works based on it. + + 10. Each time you redistribute the Library (or any work based on the +Library), the recipient automatically receives a license from the +original licensor to copy, distribute, link with or modify the Library +subject to these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties with +this License. + + 11. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Library at all. For example, if a patent +license would not permit royalty-free redistribution of the Library by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Library. + +If any portion of this section is held invalid or unenforceable under any +particular circumstance, the balance of the section is intended to apply, +and the section as a whole is intended to apply in other circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + + 12. If the distribution and/or use of the Library is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Library under this License may add +an explicit geographical distribution limitation excluding those countries, +so that distribution is permitted only in or among countries not thus +excluded. In such case, this License incorporates the limitation as if +written in the body of this License. + + 13. The Free Software Foundation may publish revised and/or new +versions of the Lesser General Public License from time to time. +Such new versions will be similar in spirit to the present version, +but may differ in detail to address new problems or concerns. + +Each version is given a distinguishing version number. If the Library +specifies a version number of this License which applies to it and +"any later version", you have the option of following the terms and +conditions either of that version or of any later version published by +the Free Software Foundation. If the Library does not specify a +license version number, you may choose any version ever published by +the Free Software Foundation. + + 14. If you wish to incorporate parts of the Library into other free +programs whose distribution conditions are incompatible with these, +write to the author to ask for permission. For software which is +copyrighted by the Free Software Foundation, write to the Free +Software Foundation; we sometimes make exceptions for this. Our +decision will be guided by the two goals of preserving the free status +of all derivatives of our free software and of promoting the sharing +and reuse of software generally. + + NO WARRANTY + + 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO +WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. +EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR +OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY +KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE +LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME +THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN +WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY +AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU +FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR +CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE +LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING +RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A +FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF +SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH +DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Libraries + + If you develop a new library, and you want it to be of the greatest +possible use to the public, we recommend making it free software that +everyone can redistribute and change. You can do so by permitting +redistribution under these terms (or, alternatively, under the terms of the +ordinary General Public License). + + To apply these terms, attach the following notices to the library. It is +safest to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least the +"copyright" line and a pointer to where the full notice is found. + + <one line to give the library's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the library, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + <signature of Ty Coon>, 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! + + @@ -0,0 +1,234 @@ +Installation Instructions +************************* + +Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005, +2006 Free Software Foundation, Inc. + +This file is free documentation; the Free Software Foundation gives +unlimited permission to copy, distribute and modify it. + +Basic Installation +================== + +Briefly, the shell commands `./configure; make; make install' should +configure, build, and install this package. The following +more-detailed instructions are generic; see the `README' file for +instructions specific to this package. + + The `configure' shell script attempts to guess correct values for +various system-dependent variables used during compilation. It uses +those values to create a `Makefile' in each directory of the package. +It may also create one or more `.h' files containing system-dependent +definitions. Finally, it creates a shell script `config.status' that +you can run in the future to recreate the current configuration, and a +file `config.log' containing compiler output (useful mainly for +debugging `configure'). + + It can also use an optional file (typically called `config.cache' +and enabled with `--cache-file=config.cache' or simply `-C') that saves +the results of its tests to speed up reconfiguring. Caching is +disabled by default to prevent problems with accidental use of stale +cache files. + + If you need to do unusual things to compile the package, please try +to figure out how `configure' could check whether to do them, and mail +diffs or instructions to the address given in the `README' so they can +be considered for the next release. If you are using the cache, and at +some point `config.cache' contains results you don't want to keep, you +may remove or edit it. + + The file `configure.ac' (or `configure.in') is used to create +`configure' by a program called `autoconf'. You need `configure.ac' if +you want to change it or regenerate `configure' using a newer version +of `autoconf'. + +The simplest way to compile this package is: + + 1. `cd' to the directory containing the package's source code and type + `./configure' to configure the package for your system. + + Running `configure' might take a while. While running, it prints + some messages telling which features it is checking for. + + 2. Type `make' to compile the package. + + 3. Optionally, type `make check' to run any self-tests that come with + the package. + + 4. Type `make install' to install the programs and any data files and + documentation. + + 5. You can remove the program binaries and object files from the + source code directory by typing `make clean'. To also remove the + files that `configure' created (so you can compile the package for + a different kind of computer), type `make distclean'. There is + also a `make maintainer-clean' target, but that is intended mainly + for the package's developers. If you use it, you may have to get + all sorts of other programs in order to regenerate files that came + with the distribution. + +Compilers and Options +===================== + +Some systems require unusual options for compilation or linking that the +`configure' script does not know about. Run `./configure --help' for +details on some of the pertinent environment variables. + + You can give `configure' initial values for configuration parameters +by setting variables in the command line or in the environment. Here +is an example: + + ./configure CC=c99 CFLAGS=-g LIBS=-lposix + + *Note Defining Variables::, for more details. + +Compiling For Multiple Architectures +==================================== + +You can compile the package for more than one kind of computer at the +same time, by placing the object files for each architecture in their +own directory. To do this, you can use GNU `make'. `cd' to the +directory where you want the object files and executables to go and run +the `configure' script. `configure' automatically checks for the +source code in the directory that `configure' is in and in `..'. + + With a non-GNU `make', it is safer to compile the package for one +architecture at a time in the source code directory. After you have +installed the package for one architecture, use `make distclean' before +reconfiguring for another architecture. + +Installation Names +================== + +By default, `make install' installs the package's commands under +`/usr/local/bin', include files under `/usr/local/include', etc. You +can specify an installation prefix other than `/usr/local' by giving +`configure' the option `--prefix=PREFIX'. + + You can specify separate installation prefixes for +architecture-specific files and architecture-independent files. If you +pass the option `--exec-prefix=PREFIX' to `configure', the package uses +PREFIX as the prefix for installing programs and libraries. +Documentation and other data files still use the regular prefix. + + In addition, if you use an unusual directory layout you can give +options like `--bindir=DIR' to specify different values for particular +kinds of files. Run `configure --help' for a list of the directories +you can set and what kinds of files go in them. + + If the package supports it, you can cause programs to be installed +with an extra prefix or suffix on their names by giving `configure' the +option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. + +Optional Features +================= + +Some packages pay attention to `--enable-FEATURE' options to +`configure', where FEATURE indicates an optional part of the package. +They may also pay attention to `--with-PACKAGE' options, where PACKAGE +is something like `gnu-as' or `x' (for the X Window System). The +`README' should mention any `--enable-' and `--with-' options that the +package recognizes. + + For packages that use the X Window System, `configure' can usually +find the X include and library files automatically, but if it doesn't, +you can use the `configure' options `--x-includes=DIR' and +`--x-libraries=DIR' to specify their locations. + +Specifying the System Type +========================== + +There may be some features `configure' cannot figure out automatically, +but needs to determine by the type of machine the package will run on. +Usually, assuming the package is built to be run on the _same_ +architectures, `configure' can figure that out, but if it prints a +message saying it cannot guess the machine type, give it the +`--build=TYPE' option. TYPE can either be a short name for the system +type, such as `sun4', or a canonical name which has the form: + + CPU-COMPANY-SYSTEM + +where SYSTEM can have one of these forms: + + OS KERNEL-OS + + See the file `config.sub' for the possible values of each field. If +`config.sub' isn't included in this package, then this package doesn't +need to know the machine type. + + If you are _building_ compiler tools for cross-compiling, you should +use the option `--target=TYPE' to select the type of system they will +produce code for. + + If you want to _use_ a cross compiler, that generates code for a +platform different from the build platform, you should specify the +"host" platform (i.e., that on which the generated programs will +eventually be run) with `--host=TYPE'. + +Sharing Defaults +================ + +If you want to set default values for `configure' scripts to share, you +can create a site shell script called `config.site' that gives default +values for variables like `CC', `cache_file', and `prefix'. +`configure' looks for `PREFIX/share/config.site' if it exists, then +`PREFIX/etc/config.site' if it exists. Or, you can set the +`CONFIG_SITE' environment variable to the location of the site script. +A warning: not all `configure' scripts look for a site script. + +Defining Variables +================== + +Variables not defined in a site shell script can be set in the +environment passed to `configure'. However, some packages may run +configure again during the build, and the customized values of these +variables may be lost. In order to avoid this problem, you should set +them in the `configure' command line, using `VAR=value'. For example: + + ./configure CC=/usr/local2/bin/gcc + +causes the specified `gcc' to be used as the C compiler (unless it is +overridden in the site shell script). + +Unfortunately, this technique does not work for `CONFIG_SHELL' due to +an Autoconf bug. Until the bug is fixed you can use this workaround: + + CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash + +`configure' Invocation +====================== + +`configure' recognizes the following options to control how it operates. + +`--help' +`-h' + Print a summary of the options to `configure', and exit. + +`--version' +`-V' + Print the version of Autoconf used to generate the `configure' + script, and exit. + +`--cache-file=FILE' + Enable the cache: use and save the results of the tests in FILE, + traditionally `config.cache'. FILE defaults to `/dev/null' to + disable caching. + +`--config-cache' +`-C' + Alias for `--cache-file=config.cache'. + +`--quiet' +`--silent' +`-q' + Do not print messages saying which checks are being made. To + suppress all normal output, redirect it to `/dev/null' (any error + messages will still be shown). + +`--srcdir=DIR' + Look for the package's source code in directory DIR. Usually + `configure' can determine that directory automatically. + +`configure' also accepts some other, not widely useful, options. Run +`configure --help' for more details. + diff --git a/MODULE_LICENSE_LGPL b/MODULE_LICENSE_LGPL new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/MODULE_LICENSE_LGPL diff --git a/Makefile.am b/Makefile.am new file mode 100644 index 0000000..ce7b7e2 --- /dev/null +++ b/Makefile.am @@ -0,0 +1,28 @@ +AUTOMAKE_OPTIONS = dist-bzip2 no-dist-gzip +ACLOCAL_AMFLAGS = -I m4 +DISTCLEANFILES = libusb-1.0.pc +MAINTAINERCLEANFILES = ChangeLog +EXTRA_DIST = TODO PORTING msvc +SUBDIRS = libusb doc + +if BUILD_EXAMPLES +SUBDIRS += examples +endif + +pkgconfigdir=$(libdir)/pkgconfig +pkgconfig_DATA=libusb-1.0.pc + +.PHONY: ChangeLog dist-up +ChangeLog: + git --git-dir $(top_srcdir)/.git log > ChangeLog || touch ChangeLog + +dist-hook: ChangeLog + +reldir = .release/$(distdir) +dist-up: dist + rm -rf $(reldir) + mkdir -p $(reldir) + cp $(distdir).tar.bz2 $(reldir) + rsync -rv $(reldir) frs.sourceforge.net:/home/frs/project/l/li/libusb/libusb-1.0/ + rm -rf $(reldir) + @@ -0,0 +1,65 @@ +This file lists notable changes in each release. For the full history of all +changes, see ChangeLog. + +2012-04-20: 1.0.9 +* Numerous bug fixes and improvements +* Backend for Windows, for devices using the WinUSB.sys driver +* Backend for OpenBSD and NetBSD, for devices using the ugen driver +* Add libusb_get_device_speed() +* Add libusb_has_capability() +* Add libusb_error_name() +* Add libusb_get_version() + +2010-05-07: v1.0.8 +* Bug fixes + +2010-04-19: v1.0.7 +* Bug fixes and documentation tweaks +* Add more interface class definitions + +2009-11-22: v1.0.6 +* Bug fixes +* Increase libusb_handle_events() timeout to 60s for powersaving + +2009-11-15: v1.0.5 + * Use timerfd when available for timer management + * Small fixes/updates + +2009-11-06: v1.0.4 release + * Bug fixes including transfer locking to fix some potential threading races + * More flexibility with clock types on Linux + * Use new bulk continuation tracking in Linux 2.6.32 for improved handling + of short/failed transfers + +2009-08-27: v1.0.3 release + * Bug fixes + * Add libusb_get_max_iso_packet_size() + +2009-06-13: v1.0.2 release + * Bug fixes + +2009-05-12: v1.0.1 release + * Bug fixes + * Darwin backend + +2008-12-13: v1.0.0 release + * Bug fixes + +2008-11-21: v0.9.4 release + * Bug fixes + * Add libusb_attach_kernel_driver() + +2008-08-23: v0.9.3 release + * Bug fixes + +2008-07-19: v0.9.2 release + * Bug fixes + +2008-06-28: v0.9.1 release + * Bug fixes + * Introduce contexts to the API + * Compatibility with new Linux kernel features + +2008-05-25: v0.9.0 release + * First libusb-1.0 beta release + @@ -0,0 +1,504 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. It also counts + as the successor of the GNU Library Public License, version 2, hence + the version number 2.1.] + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +Licenses are intended to guarantee your freedom to share and change +free software--to make sure the software is free for all its users. + + This license, the Lesser General Public License, applies to some +specially designated software packages--typically libraries--of the +Free Software Foundation and other authors who decide to use it. You +can use it too, but we suggest you first think carefully about whether +this license or the ordinary General Public License is the better +strategy to use in any particular case, based on the explanations below. + + When we speak of free software, we are referring to freedom of use, +not price. Our General Public Licenses are designed to make sure that +you have the freedom to distribute copies of free software (and charge +for this service if you wish); that you receive source code or can get +it if you want it; that you can change the software and use pieces of +it in new free programs; and that you are informed that you can do +these things. + + To protect your rights, we need to make restrictions that forbid +distributors to deny you these rights or to ask you to surrender these +rights. These restrictions translate to certain responsibilities for +you if you distribute copies of the library or if you modify it. + + For example, if you distribute copies of the library, whether gratis +or for a fee, you must give the recipients all the rights that we gave +you. You must make sure that they, too, receive or can get the source +code. If you link other code with the library, you must provide +complete object files to the recipients, so that they can relink them +with the library after making changes to the library and recompiling +it. And you must show them these terms so they know their rights. + + We protect your rights with a two-step method: (1) we copyright the +library, and (2) we offer you this license, which gives you legal +permission to copy, distribute and/or modify the library. + + To protect each distributor, we want to make it very clear that +there is no warranty for the free library. Also, if the library is +modified by someone else and passed on, the recipients should know +that what they have is not the original version, so that the original +author's reputation will not be affected by problems that might be +introduced by others. + + Finally, software patents pose a constant threat to the existence of +any free program. We wish to make sure that a company cannot +effectively restrict the users of a free program by obtaining a +restrictive license from a patent holder. Therefore, we insist that +any patent license obtained for a version of the library must be +consistent with the full freedom of use specified in this license. + + Most GNU software, including some libraries, is covered by the +ordinary GNU General Public License. This license, the GNU Lesser +General Public License, applies to certain designated libraries, and +is quite different from the ordinary General Public License. We use +this license for certain libraries in order to permit linking those +libraries into non-free programs. + + When a program is linked with a library, whether statically or using +a shared library, the combination of the two is legally speaking a +combined work, a derivative of the original library. The ordinary +General Public License therefore permits such linking only if the +entire combination fits its criteria of freedom. The Lesser General +Public License permits more lax criteria for linking other code with +the library. + + We call this license the "Lesser" General Public License because it +does Less to protect the user's freedom than the ordinary General +Public License. It also provides other free software developers Less +of an advantage over competing non-free programs. These disadvantages +are the reason we use the ordinary General Public License for many +libraries. However, the Lesser license provides advantages in certain +special circumstances. + + For example, on rare occasions, there may be a special need to +encourage the widest possible use of a certain library, so that it becomes +a de-facto standard. To achieve this, non-free programs must be +allowed to use the library. A more frequent case is that a free +library does the same job as widely used non-free libraries. In this +case, there is little to gain by limiting the free library to free +software only, so we use the Lesser General Public License. + + In other cases, permission to use a particular library in non-free +programs enables a greater number of people to use a large body of +free software. For example, permission to use the GNU C Library in +non-free programs enables many more people to use the whole GNU +operating system, as well as its variant, the GNU/Linux operating +system. + + Although the Lesser General Public License is Less protective of the +users' freedom, it does ensure that the user of a program that is +linked with the Library has the freedom and the wherewithal to run +that program using a modified version of the Library. + + The precise terms and conditions for copying, distribution and +modification follow. Pay close attention to the difference between a +"work based on the library" and a "work that uses the library". The +former contains code derived from the library, whereas the latter must +be combined with the library in order to run. + + GNU LESSER GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License Agreement applies to any software library or other +program which contains a notice placed by the copyright holder or +other authorized party saying it may be distributed under the terms of +this Lesser General Public License (also called "this License"). +Each licensee is addressed as "you". + + A "library" means a collection of software functions and/or data +prepared so as to be conveniently linked with application programs +(which use some of those functions and data) to form executables. + + The "Library", below, refers to any such software library or work +which has been distributed under these terms. A "work based on the +Library" means either the Library or any derivative work under +copyright law: that is to say, a work containing the Library or a +portion of it, either verbatim or with modifications and/or translated +straightforwardly into another language. (Hereinafter, translation is +included without limitation in the term "modification".) + + "Source code" for a work means the preferred form of the work for +making modifications to it. For a library, complete source code means +all the source code for all modules it contains, plus any associated +interface definition files, plus the scripts used to control compilation +and installation of the library. + + Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running a program using the Library is not restricted, and output from +such a program is covered only if its contents constitute a work based +on the Library (independent of the use of the Library in a tool for +writing it). Whether that is true depends on what the Library does +and what the program that uses the Library does. + + 1. You may copy and distribute verbatim copies of the Library's +complete source code as you receive it, in any medium, provided that +you conspicuously and appropriately publish on each copy an +appropriate copyright notice and disclaimer of warranty; keep intact +all the notices that refer to this License and to the absence of any +warranty; and distribute a copy of this License along with the +Library. + + You may charge a fee for the physical act of transferring a copy, +and you may at your option offer warranty protection in exchange for a +fee. + + 2. You may modify your copy or copies of the Library or any portion +of it, thus forming a work based on the Library, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) The modified work must itself be a software library. + + b) You must cause the files modified to carry prominent notices + stating that you changed the files and the date of any change. + + c) You must cause the whole of the work to be licensed at no + charge to all third parties under the terms of this License. + + d) If a facility in the modified Library refers to a function or a + table of data to be supplied by an application program that uses + the facility, other than as an argument passed when the facility + is invoked, then you must make a good faith effort to ensure that, + in the event an application does not supply such function or + table, the facility still operates, and performs whatever part of + its purpose remains meaningful. + + (For example, a function in a library to compute square roots has + a purpose that is entirely well-defined independent of the + application. Therefore, Subsection 2d requires that any + application-supplied function or table used by this function must + be optional: if the application does not supply it, the square + root function must still compute square roots.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Library, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Library, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote +it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Library. + +In addition, mere aggregation of another work not based on the Library +with the Library (or with a work based on the Library) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may opt to apply the terms of the ordinary GNU General Public +License instead of this License to a given copy of the Library. To do +this, you must alter all the notices that refer to this License, so +that they refer to the ordinary GNU General Public License, version 2, +instead of to this License. (If a newer version than version 2 of the +ordinary GNU General Public License has appeared, then you can specify +that version instead if you wish.) Do not make any other change in +these notices. + + Once this change is made in a given copy, it is irreversible for +that copy, so the ordinary GNU General Public License applies to all +subsequent copies and derivative works made from that copy. + + This option is useful when you wish to copy part of the code of +the Library into a program that is not a library. + + 4. You may copy and distribute the Library (or a portion or +derivative of it, under Section 2) in object code or executable form +under the terms of Sections 1 and 2 above provided that you accompany +it with the complete corresponding machine-readable source code, which +must be distributed under the terms of Sections 1 and 2 above on a +medium customarily used for software interchange. + + If distribution of object code is made by offering access to copy +from a designated place, then offering equivalent access to copy the +source code from the same place satisfies the requirement to +distribute the source code, even though third parties are not +compelled to copy the source along with the object code. + + 5. A program that contains no derivative of any portion of the +Library, but is designed to work with the Library by being compiled or +linked with it, is called a "work that uses the Library". Such a +work, in isolation, is not a derivative work of the Library, and +therefore falls outside the scope of this License. + + However, linking a "work that uses the Library" with the Library +creates an executable that is a derivative of the Library (because it +contains portions of the Library), rather than a "work that uses the +library". The executable is therefore covered by this License. +Section 6 states terms for distribution of such executables. + + When a "work that uses the Library" uses material from a header file +that is part of the Library, the object code for the work may be a +derivative work of the Library even though the source code is not. +Whether this is true is especially significant if the work can be +linked without the Library, or if the work is itself a library. The +threshold for this to be true is not precisely defined by law. + + If such an object file uses only numerical parameters, data +structure layouts and accessors, and small macros and small inline +functions (ten lines or less in length), then the use of the object +file is unrestricted, regardless of whether it is legally a derivative +work. (Executables containing this object code plus portions of the +Library will still fall under Section 6.) + + Otherwise, if the work is a derivative of the Library, you may +distribute the object code for the work under the terms of Section 6. +Any executables containing that work also fall under Section 6, +whether or not they are linked directly with the Library itself. + + 6. As an exception to the Sections above, you may also combine or +link a "work that uses the Library" with the Library to produce a +work containing portions of the Library, and distribute that work +under terms of your choice, provided that the terms permit +modification of the work for the customer's own use and reverse +engineering for debugging such modifications. + + You must give prominent notice with each copy of the work that the +Library is used in it and that the Library and its use are covered by +this License. You must supply a copy of this License. If the work +during execution displays copyright notices, you must include the +copyright notice for the Library among them, as well as a reference +directing the user to the copy of this License. Also, you must do one +of these things: + + a) Accompany the work with the complete corresponding + machine-readable source code for the Library including whatever + changes were used in the work (which must be distributed under + Sections 1 and 2 above); and, if the work is an executable linked + with the Library, with the complete machine-readable "work that + uses the Library", as object code and/or source code, so that the + user can modify the Library and then relink to produce a modified + executable containing the modified Library. (It is understood + that the user who changes the contents of definitions files in the + Library will not necessarily be able to recompile the application + to use the modified definitions.) + + b) Use a suitable shared library mechanism for linking with the + Library. A suitable mechanism is one that (1) uses at run time a + copy of the library already present on the user's computer system, + rather than copying library functions into the executable, and (2) + will operate properly with a modified version of the library, if + the user installs one, as long as the modified version is + interface-compatible with the version that the work was made with. + + c) Accompany the work with a written offer, valid for at + least three years, to give the same user the materials + specified in Subsection 6a, above, for a charge no more + than the cost of performing this distribution. + + d) If distribution of the work is made by offering access to copy + from a designated place, offer equivalent access to copy the above + specified materials from the same place. + + e) Verify that the user has already received a copy of these + materials or that you have already sent this user a copy. + + For an executable, the required form of the "work that uses the +Library" must include any data and utility programs needed for +reproducing the executable from it. However, as a special exception, +the materials to be distributed need not include anything that is +normally distributed (in either source or binary form) with the major +components (compiler, kernel, and so on) of the operating system on +which the executable runs, unless that component itself accompanies +the executable. + + It may happen that this requirement contradicts the license +restrictions of other proprietary libraries that do not normally +accompany the operating system. Such a contradiction means you cannot +use both them and the Library together in an executable that you +distribute. + + 7. You may place library facilities that are a work based on the +Library side-by-side in a single library together with other library +facilities not covered by this License, and distribute such a combined +library, provided that the separate distribution of the work based on +the Library and of the other library facilities is otherwise +permitted, and provided that you do these two things: + + a) Accompany the combined library with a copy of the same work + based on the Library, uncombined with any other library + facilities. This must be distributed under the terms of the + Sections above. + + b) Give prominent notice with the combined library of the fact + that part of it is a work based on the Library, and explaining + where to find the accompanying uncombined form of the same work. + + 8. You may not copy, modify, sublicense, link with, or distribute +the Library except as expressly provided under this License. Any +attempt otherwise to copy, modify, sublicense, link with, or +distribute the Library is void, and will automatically terminate your +rights under this License. However, parties who have received copies, +or rights, from you under this License will not have their licenses +terminated so long as such parties remain in full compliance. + + 9. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Library or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Library (or any work based on the +Library), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Library or works based on it. + + 10. Each time you redistribute the Library (or any work based on the +Library), the recipient automatically receives a license from the +original licensor to copy, distribute, link with or modify the Library +subject to these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties with +this License. + + 11. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Library at all. For example, if a patent +license would not permit royalty-free redistribution of the Library by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Library. + +If any portion of this section is held invalid or unenforceable under any +particular circumstance, the balance of the section is intended to apply, +and the section as a whole is intended to apply in other circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + + 12. If the distribution and/or use of the Library is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Library under this License may add +an explicit geographical distribution limitation excluding those countries, +so that distribution is permitted only in or among countries not thus +excluded. In such case, this License incorporates the limitation as if +written in the body of this License. + + 13. The Free Software Foundation may publish revised and/or new +versions of the Lesser General Public License from time to time. +Such new versions will be similar in spirit to the present version, +but may differ in detail to address new problems or concerns. + +Each version is given a distinguishing version number. If the Library +specifies a version number of this License which applies to it and +"any later version", you have the option of following the terms and +conditions either of that version or of any later version published by +the Free Software Foundation. If the Library does not specify a +license version number, you may choose any version ever published by +the Free Software Foundation. + + 14. If you wish to incorporate parts of the Library into other free +programs whose distribution conditions are incompatible with these, +write to the author to ask for permission. For software which is +copyrighted by the Free Software Foundation, write to the Free +Software Foundation; we sometimes make exceptions for this. Our +decision will be guided by the two goals of preserving the free status +of all derivatives of our free software and of promoting the sharing +and reuse of software generally. + + NO WARRANTY + + 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO +WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. +EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR +OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY +KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE +LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME +THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN +WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY +AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU +FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR +CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE +LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING +RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A +FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF +SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH +DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Libraries + + If you develop a new library, and you want it to be of the greatest +possible use to the public, we recommend making it free software that +everyone can redistribute and change. You can do so by permitting +redistribution under these terms (or, alternatively, under the terms of the +ordinary General Public License). + + To apply these terms, attach the following notices to the library. It is +safest to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least the +"copyright" line and a pointer to where the full notice is found. + + <one line to give the library's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the library, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + <signature of Ty Coon>, 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! + + @@ -0,0 +1,95 @@ +PORTING LIBUSB TO OTHER PLATFORMS + +Introduction +============ + +This document is aimed at developers wishing to port libusb to unsupported +platforms. I believe the libusb API is OS-independent, so by supporting +multiple operating systems we pave the way for cross-platform USB device +drivers. + +Implementation-wise, the basic idea is that you provide an interface to +libusb's internal "backend" API, which performs the appropriate operations on +your target platform. + +In terms of USB I/O, your backend provides functionality to submit +asynchronous transfers (synchronous transfers are implemented in the higher +layers, based on the async interface). Your backend must also provide +functionality to cancel those transfers. + +Your backend must also provide an event handling function to "reap" ongoing +transfers and process their results. + +The backend must also provide standard functions for other USB operations, +e.g. setting configuration, obtaining descriptors, etc. + + +File descriptors for I/O polling +================================ + +For libusb to work, your event handling function obviously needs to be called +at various points in time. Your backend must provide a set of file descriptors +which libusb and its users can pass to poll() or select() to determine when +it is time to call the event handling function. + +On Linux, this is easy: the usbfs kernel interface exposes a file descriptor +which can be passed to poll(). If something similar is not true for your +platform, you can emulate this using an internal library thread to reap I/O as +necessary, and a pipe() with the main library to raise events. The file +descriptor of the pipe can then be provided to libusb as an event source. + + +Interface semantics and documentation +===================================== + +Documentation of the backend interface can be found in libusbi.h inside the +usbi_os_backend structure definition. + +Your implementations of these functions will need to call various internal +libusb functions, prefixed with "usbi_". Documentation for these functions +can be found in the .c files where they are implemented. + +You probably want to skim over *all* the documentation before starting your +implementation. For example, you probably need to allocate and store private +OS-specific data for device handles, but the documentation for the mechanism +for doing so is probably not the first thing you will see. + +The Linux backend acts as a good example - view it as a reference +implementation which you should try to match the behaviour of. + + +Getting started +=============== + +1. Modify configure.ac to detect your platform appropriately (see the OS_LINUX +stuff for an example). + +2. Implement your backend in the libusb/os/ directory, modifying +libusb/os/Makefile.am appropriately. + +3. Add preprocessor logic to the top of libusb/core.c to statically assign the +right usbi_backend for your platform. + +4. Produce and test your implementation. + +5. Send your implementation to libusb-devel mailing list. + + +Implementation difficulties? Questions? +======================================= + +If you encounter difficulties porting libusb to your platform, please raise +these issues on the libusb-devel mailing list. Where possible and sensible, I +am interested in solving problems preventing libusb from operating on other +platforms. + +The libusb-devel mailing list is also a good place to ask questions and +make suggestions about the internal API. Hopefully we can produce some +better documentation based on your questions and other input. + +You are encouraged to get involved in the process; if the library needs +some infrastructure additions/modifications to better support your platform, +you are encouraged to make such changes (in cleanly distinct patch +submissions). Even if you do not make such changes yourself, please do raise +the issues on the mailing list at the very minimum. + @@ -0,0 +1,22 @@ +libusb +====== + +libusb is a library for USB device access from Linux, Mac OS X, +OpenBSD, NetBSD, and Windows userspace. +It is written in C and licensed under the LGPL-2.1 (see COPYING). + +libusb is abstracted internally in such a way that it can hopefully +be ported to other operating systems. See the PORTING file for some +information, if you fancy a challenge. :) + +libusb homepage: +http://libusb.org/ + +Developers will wish to consult the API documentation: +http://libusb.sourceforge.net/api-1.0/ + +Use the mailing list for questions, comments, etc: +http://libusb.org/wiki/MailingList + +- Peter Stuge <peter@stuge.se> +(use the mailing list rather than mailing developers directly) diff --git a/RELEASE-NOTES b/RELEASE-NOTES new file mode 100644 index 0000000..b8fe795 --- /dev/null +++ b/RELEASE-NOTES @@ -0,0 +1,35 @@ +libusb 1.0.9 + +This release has taken much too long to finish, but this also means that it +has a long list of bugs fixes and many other improvements. + +Perhaps the most exciting improvement is the addition of the backend for +Microsoft Windows, which closes ticket #1. + +A very special thanks goes to Pete Batard, Michael Plante, Tim Roberts, +Orin Eman, Graeme Gill, and everyone else in the community who help work +on the Windows support! + +Because Windows is a peculiar beast you may encounter some bugs when using +this first release with the Windows backend. In that case, please get in +touch with the libusb community so that we can help resolve them. File a +ticket at http://libusb.org/newticket or let us know via email or on IRC. +Visit http://libusb.org/ for all contact details. + +Another exciting improvement is the new OpenBSD backend, which also works +on NetBSD systems. + +All known downstream bugs and all known severe bugs reported directly to +libusb.org have been fixed in this release, so please report new ones! + + +This release would not have been what it is without help, code, reports, +and advice from friends like these: + + Alan Ott, Alan Stern, Brian Shirley, Dave Camarillo, Graeme Gill, + Hans de Goede, Hector Martin, James Hanko, Konrad Rzepecki, + Ludovic Rousseau, Martin Pieuchot, Mike Frysinger, Orin Eman, + Pekka Nikander, Pete Batard, Sean McBride, Sebastian Pipping, + Stephan Meyer, Thomas Röfer, Trygve Laugstøl, Vitali Lovich, Xiaofan Chen + + Thanks! @@ -0,0 +1,8 @@ +Development contributors are listed in the AUTHORS file. Other community +members who have made significant contributions in other areas are listed +in this file: + +Alan Stern +Ludovic Rousseau +Tim Roberts +Xiaofan Chen @@ -0,0 +1,9 @@ +for 1.1 or future +================== +optional timerfd support (runtime detection) +notifications of hotplugged/unplugged devices +offer API to create/destroy handle_events thread +isochronous sync I/O? +exposing of parent-child device relationships +"usb primer" introduction docs +more examples diff --git a/autogen.sh b/autogen.sh new file mode 100755 index 0000000..c7bb679 --- /dev/null +++ b/autogen.sh @@ -0,0 +1,19 @@ +#!/bin/sh + +# use libtoolize if available, otherwise look for glibtoolize (darwin) +if (libtoolize --version) < /dev/null > /dev/null 2>&1; then + LIBTOOLIZE=libtoolize +elif (glibtoolize --version) < /dev/null > /dev/null 2>&1; then + LIBTOOLIZE=glibtoolize +else + echo "libtoolize or glibtoolize was not found! Please install libtool." + exit +fi + +$LIBTOOLIZE --copy --force || exit 1 +aclocal || exit 1 +autoheader || exit 1 +autoconf || exit 1 +automake -a -c || exit 1 +./configure --enable-maintainer-mode --enable-debug-log \ + --enable-examples-build $* diff --git a/config.h b/config.h new file mode 100644 index 0000000..52d50ee --- /dev/null +++ b/config.h @@ -0,0 +1,117 @@ +/* config.h. Generated from config.h.in by configure. */ +/* config.h.in. Generated from configure.ac by autoheader. */ + +#define LIBUSB_DESCRIBE "" +#undef USBI_TIMERFD_AVAILABLE + +/* Default visibility */ +#define DEFAULT_VISIBILITY __attribute__((visibility("default"))) + +/* Debug message logging */ +/* #undef ENABLE_DEBUG_LOGGING */ + +/* Message logging */ +#define ENABLE_LOGGING 1 + +/* Define to 1 if you have the <dlfcn.h> header file. */ +#define HAVE_DLFCN_H 1 + +/* Define to 1 if you have the `gettimeofday' function. */ +#define HAVE_GETTIMEOFDAY 1 + +/* Define to 1 if you have the <inttypes.h> header file. */ +#define HAVE_INTTYPES_H 1 + +/* Define to 1 if you have the <memory.h> header file. */ +#define HAVE_MEMORY_H 1 + +/* Define to 1 if you have the <poll.h> header file. */ +#define HAVE_POLL_H 1 + +/* Define to 1 if you have the <stdint.h> header file. */ +#define HAVE_STDINT_H 1 + +/* Define to 1 if you have the <stdlib.h> header file. */ +#define HAVE_STDLIB_H 1 + +/* Define to 1 if you have the <strings.h> header file. */ +#define HAVE_STRINGS_H 1 + +/* Define to 1 if you have the <string.h> header file. */ +#define HAVE_STRING_H 1 + +/* Define to 1 if the system has the type `struct timespec'. */ +#define HAVE_STRUCT_TIMESPEC 1 + +/* Define to 1 if you have the <sys/stat.h> header file. */ +#define HAVE_SYS_STAT_H 1 + +/* Define to 1 if you have the <sys/time.h> header file. */ +#define HAVE_SYS_TIME_H 1 + +/* Define to 1 if you have the <sys/types.h> header file. */ +#define HAVE_SYS_TYPES_H 1 + +/* Define to 1 if you have the <unistd.h> header file. */ +#define HAVE_UNISTD_H 1 + +/* Define to the sub-directory in which libtool stores uninstalled libraries. + */ +#define LT_OBJDIR ".libs/" + +/* Define to 1 if your C compiler doesn't accept -c and -o together. */ +/* #undef NO_MINUS_C_MINUS_O */ + +/* Darwin backend */ +/* #undef OS_DARWIN */ + +/* Linux backend */ +#define OS_LINUX 1 + +/* OpenBSD backend */ +/* #undef OS_OPENBSD */ + +/* Windows backend */ +/* #undef OS_WINDOWS */ + +/* Name of package */ +#define PACKAGE "libusb" + +/* Define to the address where bug reports for this package should be sent. */ +#define PACKAGE_BUGREPORT "libusb-devel@lists.sourceforge.net" + +/* Define to the full name of this package. */ +#define PACKAGE_NAME "libusb" + +/* Define to the full name and version of this package. */ +#define PACKAGE_STRING "libusb 1.0.9" + +/* Define to the one symbol short name of this package. */ +#define PACKAGE_TARNAME "libusb" + +/* Define to the home page for this package. */ +#define PACKAGE_URL "http://www.libusb.org/" + +/* Define to the version of this package. */ +#define PACKAGE_VERSION "1.0.9" + +/* type of second poll() argument */ +#define POLL_NFDS_TYPE nfds_t + +/* Define to 1 if you have the ANSI C header files. */ +#define STDC_HEADERS 1 + +/* Use POSIX Threads */ +#define THREADS_POSIX 1 + +/* Version number of package */ +#define VERSION "1.0.9" + +/* Use GNU extensions */ +#define _GNU_SOURCE 1 + +/* Define to `__inline__' or `__inline' if that's what the C compiler + calls it, or to nothing if 'inline' is not supported under any name. */ +#ifndef __cplusplus +/* #undef inline */ +#endif diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..f9e648e --- /dev/null +++ b/configure.ac @@ -0,0 +1,222 @@ +dnl These m4 macros are whitespace sensitive and break if moved around much. +m4_define([LU_VERSION_H], m4_include([libusb/version.h])) +m4_define([LU_DEFINE_VERSION_ATOM], + [m4_define([$1], m4_bregexp(LU_VERSION_H, + [^#define\s*$1\s*\([0-9]*\).*], [\1]))]) +m4_define([LU_DEFINE_VERSION_RC_ATOM], + [m4_define([$1], m4_bregexp(LU_VERSION_H, + [^#define\s*$1\s*"\(-rc[0-9]*\)".*], [\1]))]) +dnl The m4_bregexp() returns (only) the numbers following the #define named +dnl in the first macro parameter. m4_define() then defines the name for use +dnl in AC_INIT(). + +LU_DEFINE_VERSION_ATOM([LIBUSB_MAJOR]) +LU_DEFINE_VERSION_ATOM([LIBUSB_MINOR]) +LU_DEFINE_VERSION_ATOM([LIBUSB_MICRO]) +LU_DEFINE_VERSION_RC_ATOM([LIBUSB_RC]) + +AC_INIT([libusb], LIBUSB_MAJOR[.]LIBUSB_MINOR[.]LIBUSB_MICRO[]LIBUSB_RC, [libusb-devel@lists.sourceforge.net], [libusb], [http://www.libusb.org/]) + +# Library versioning +# These numbers should be tweaked on every release. Read carefully: +# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html +# http://sourceware.org/autobook/autobook/autobook_91.html +lt_current="1" +lt_revision="0" +lt_age="1" +LTLDFLAGS="-version-info ${lt_current}:${lt_revision}:${lt_age}" + +AM_INIT_AUTOMAKE +AM_MAINTAINER_MODE + +AC_CONFIG_SRCDIR([libusb/core.c]) +AC_CONFIG_MACRO_DIR([m4]) +AM_CONFIG_HEADER([config.h]) +m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])]) + +AC_PREREQ([2.50]) +AC_PROG_CC +AC_PROG_LIBTOOL +LT_LANG([Windows Resource]) +AC_C_INLINE +AM_PROG_CC_C_O +AC_DEFINE([_GNU_SOURCE], 1, [Use GNU extensions]) + +LTLDFLAGS="${LTLDFLAGS} -no-undefined" + +AC_MSG_CHECKING([operating system]) +case $host in +*-linux*) + AC_MSG_RESULT([Linux]) + backend="linux" + ;; +*-darwin*) + AC_MSG_RESULT([Darwin/Mac OS X]) + backend="darwin" + ;; +*-openbsd*) + AC_MSG_RESULT([OpenBSD]) + backend="openbsd" + ;; +*-netbsd*) + AC_MSG_RESULT([NetBSD (using OpenBSD backend)]) + backend="openbsd" + ;; +*-mingw*) + AC_MSG_RESULT([Windows]) + backend="windows" + ;; +*-cygwin*) + AC_MSG_RESULT([Cygwin (using Windows backend)]) + backend="windows" + threads="posix" + ;; +*) + AC_MSG_ERROR([unsupported operating system]) +esac +case $backend in +linux) + AC_DEFINE(OS_LINUX, 1, [Linux backend]) + AC_SUBST(OS_LINUX) + AC_CHECK_LIB(rt, clock_gettime, PC_LIBS_PRIVATE="-lrt") + threads="posix" + THREAD_CFLAGS="-pthread" + PC_LIBS_PRIVATE="${PC_LIBS_PRIVATE} -pthread" + AC_CHECK_HEADERS([poll.h]) + AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument]) + ;; +darwin) + AC_DEFINE(OS_DARWIN, 1, [Darwin backend]) + AC_SUBST(OS_DARWIN) + threads="posix" + PC_LIBS_PRIVATE="-lobjc -Wl,-framework,IOKit -Wl,-framework,CoreFoundation" + LTLDFLAGS="${LTLDFLAGS} -Wl,-prebind" + AC_CHECK_HEADERS([poll.h]) + AC_CHECK_TYPE([nfds_t], + [AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])], + [AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])], + [#include <poll.h>]) + ;; +openbsd) + AC_DEFINE(OS_OPENBSD, 1, [OpenBSD backend]) + AC_SUBST(OS_OPENBSD) + threads="posix" + THREAD_CFLAGS="-pthread" + PC_LIBS_PRIVATE="-pthread" + AC_CHECK_HEADERS([poll.h]) + AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument]) + ;; +windows) + AC_DEFINE(OS_WINDOWS, 1, [Windows backend]) + AC_SUBST(OS_WINDOWS) + PC_LIBS_PRIVATE="" + LTLDFLAGS="${LTLDFLAGS} -avoid-version -Wl,--add-stdcall-alias" + AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument]) + ;; +esac +AC_SUBST(THREAD_CFLAGS) +AC_SUBST(PC_LIBS_PRIVATE) +LIBS="${LIBS} ${PC_LIBS_PRIVATE}" + +AM_CONDITIONAL(OS_LINUX, test "x$backend" = xlinux) +AM_CONDITIONAL(OS_DARWIN, test "x$backend" = xdarwin) +AM_CONDITIONAL(OS_OPENBSD, test "x$backend" = xopenbsd) +AM_CONDITIONAL(OS_WINDOWS, test "x$backend" = xwindows) +AM_CONDITIONAL(THREADS_POSIX, test "x$threads" = xposix) +if test "$threads" = posix; then + AC_DEFINE(THREADS_POSIX, 1, [Use POSIX Threads]) +fi + +# timerfd +AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=1], [timerfd_h=0]) +AC_ARG_ENABLE([timerfd], + [AS_HELP_STRING([--enable-timerfd], + [use timerfd for timing (default auto)])], + [use_timerfd=$enableval], [use_timerfd='auto']) + +if test "x$use_timerfd" = "xyes" -a "x$timerfd_h" = "x0"; then + AC_MSG_ERROR([timerfd header not available; glibc 2.9+ required]) +fi + +AC_CHECK_DECL([TFD_NONBLOCK], [tfd_hdr_ok=yes], [tfd_hdr_ok=no], [#include <sys/timerfd.h>]) +if test "x$use_timerfd" = "xyes" -a "x$tfd_hdr_ok" = "xno"; then + AC_MSG_ERROR([timerfd header not usable; glibc 2.9+ required]) +fi + +AC_MSG_CHECKING([whether to use timerfd for timing]) +if test "x$use_timerfd" = "xno"; then + AC_MSG_RESULT([no (disabled by user)]) +else + if test "x$timerfd_h" = "x1" -a "x$tfd_hdr_ok" = "xyes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE(USBI_TIMERFD_AVAILABLE, 1, [timerfd headers available]) + else + AC_MSG_RESULT([no (header not available)]) + fi +fi + +AC_CHECK_TYPES(struct timespec) + +# Message logging +AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])], + [log_enabled=$enableval], + [log_enabled='yes']) +if test "x$log_enabled" != "xno"; then + AC_DEFINE([ENABLE_LOGGING], 1, [Message logging]) +fi + +AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log], + [enable debug logging (default n)])], + [debug_log_enabled=$enableval], + [debug_log_enabled='no']) +if test "x$debug_log_enabled" != "xno"; then + AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Debug message logging]) +fi + +# Examples build +AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build], + [build example applications (default n)])], + [build_examples=$enableval], + [build_examples='no']) +AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"]) + +# check for -fvisibility=hidden compiler support (GCC >= 3.4) +saved_cflags="$CFLAGS" +# -Werror required for cygwin +CFLAGS="$CFLAGS -Werror -fvisibility=hidden" +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], + [VISIBILITY_CFLAGS="-fvisibility=hidden" + AC_DEFINE([DEFAULT_VISIBILITY], [__attribute__((visibility("default")))], [Default visibility]) ], + [ VISIBILITY_CFLAGS="" + AC_DEFINE([DEFAULT_VISIBILITY], [], [Default visibility]) ], + ]) +CFLAGS="$saved_cflags" + +# check for -Wno-pointer-sign compiler support (GCC >= 4) +saved_cflags="$CFLAGS" +CFLAGS="$CFLAGS -Wno-pointer-sign" +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], + nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="") +CFLAGS="$saved_cflags" + +# sigaction not available on MinGW +AC_CHECK_FUNC([sigaction], [have_sigaction=yes], [have_sigaction=no]) +AM_CONDITIONAL([HAVE_SIGACTION], [test "x$have_sigaction" = "xyes"]) + +# headers not available on all platforms but required on others +AC_CHECK_HEADERS([sys/time.h]) +AC_CHECK_FUNCS(gettimeofday) + +AM_CFLAGS="-std=gnu99 -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow" + +AC_SUBST(VISIBILITY_CFLAGS) +AC_SUBST(AM_CFLAGS) +AC_SUBST(LTLDFLAGS) + +AC_CONFIG_FILES([libusb-1.0.pc]) +AC_CONFIG_FILES([Makefile]) +AC_CONFIG_FILES([libusb/Makefile]) +AC_CONFIG_FILES([examples/Makefile]) +AC_CONFIG_FILES([doc/Makefile]) +AC_CONFIG_FILES([doc/doxygen.cfg]) +AC_OUTPUT diff --git a/doc/Makefile.am b/doc/Makefile.am new file mode 100644 index 0000000..931a7c0 --- /dev/null +++ b/doc/Makefile.am @@ -0,0 +1,10 @@ +EXTRA_DIST = doxygen.cfg.in + +docs: doxygen.cfg + doxygen $^ + +docs-upload: docs + ln -s html api-1.0 + rsync -av api-1.0/ web.sourceforge.net:htdocs/api-1.0/ + rm -f api-1.0 + diff --git a/doc/doxygen.cfg.in b/doc/doxygen.cfg.in new file mode 100644 index 0000000..128e1de --- /dev/null +++ b/doc/doxygen.cfg.in @@ -0,0 +1,1294 @@ +# Doxyfile 1.5.3 + +# This file describes the settings to be used by the documentation system +# doxygen (www.doxygen.org) for a project +# +# All text after a hash (#) is considered a comment and will be ignored +# The format is: +# TAG = value [value, ...] +# For lists items can also be appended using: +# TAG += value [value, ...] +# Values that contain spaces should be placed between quotes (" ") + +#--------------------------------------------------------------------------- +# Project related configuration options +#--------------------------------------------------------------------------- + +# This tag specifies the encoding used for all characters in the config file that +# follow. The default is UTF-8 which is also the encoding used for all text before +# the first occurrence of this tag. Doxygen uses libiconv (or the iconv built into +# libc) for the transcoding. See http://www.gnu.org/software/libiconv for the list of +# possible encodings. + +DOXYFILE_ENCODING = UTF-8 + +# The PROJECT_NAME tag is a single word (or a sequence of words surrounded +# by quotes) that should identify the project. + +PROJECT_NAME = libusb + +# The PROJECT_NUMBER tag can be used to enter a project or revision number. +# This could be handy for archiving the generated documentation or +# if some version control system is used. + +PROJECT_NUMBER = + +# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) +# base path where the generated documentation will be put. +# If a relative path is entered, it will be relative to the location +# where doxygen was started. If left blank the current directory will be used. + +OUTPUT_DIRECTORY = + +# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create +# 4096 sub-directories (in 2 levels) under the output directory of each output +# format and will distribute the generated files over these directories. +# Enabling this option can be useful when feeding doxygen a huge amount of +# source files, where putting all generated files in the same directory would +# otherwise cause performance problems for the file system. + +CREATE_SUBDIRS = NO + +# The OUTPUT_LANGUAGE tag is used to specify the language in which all +# documentation generated by doxygen is written. Doxygen will use this +# information to generate all constant output in the proper language. +# The default language is English, other supported languages are: +# Afrikaans, Arabic, Brazilian, Catalan, Chinese, Chinese-Traditional, +# Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hungarian, +# Italian, Japanese, Japanese-en (Japanese with English messages), Korean, +# Korean-en, Lithuanian, Norwegian, Polish, Portuguese, Romanian, Russian, +# Serbian, Slovak, Slovene, Spanish, Swedish, and Ukrainian. + +OUTPUT_LANGUAGE = English + +# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will +# include brief member descriptions after the members that are listed in +# the file and class documentation (similar to JavaDoc). +# Set to NO to disable this. + +BRIEF_MEMBER_DESC = YES + +# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend +# the brief description of a member or function before the detailed description. +# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the +# brief descriptions will be completely suppressed. + +REPEAT_BRIEF = YES + +# This tag implements a quasi-intelligent brief description abbreviator +# that is used to form the text in various listings. Each string +# in this list, if found as the leading text of the brief description, will be +# stripped from the text and the result after processing the whole list, is +# used as the annotated text. Otherwise, the brief description is used as-is. +# If left blank, the following values are used ("$name" is automatically +# replaced with the name of the entity): "The $name class" "The $name widget" +# "The $name file" "is" "provides" "specifies" "contains" +# "represents" "a" "an" "the" + +ABBREVIATE_BRIEF = + +# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then +# Doxygen will generate a detailed section even if there is only a brief +# description. + +ALWAYS_DETAILED_SEC = NO + +# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all +# inherited members of a class in the documentation of that class as if those +# members were ordinary class members. Constructors, destructors and assignment +# operators of the base classes will not be shown. + +INLINE_INHERITED_MEMB = NO + +# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full +# path before files name in the file list and in the header files. If set +# to NO the shortest path that makes the file name unique will be used. + +FULL_PATH_NAMES = NO + +# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag +# can be used to strip a user-defined part of the path. Stripping is +# only done if one of the specified strings matches the left-hand part of +# the path. The tag can be used to show relative paths in the file list. +# If left blank the directory from which doxygen is run is used as the +# path to strip. + +STRIP_FROM_PATH = + +# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of +# the path mentioned in the documentation of a class, which tells +# the reader which header file to include in order to use a class. +# If left blank only the name of the header file containing the class +# definition is used. Otherwise one should specify the include paths that +# are normally passed to the compiler using the -I flag. + +STRIP_FROM_INC_PATH = + +# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter +# (but less readable) file names. This can be useful is your file systems +# doesn't support long names like on DOS, Mac, or CD-ROM. + +SHORT_NAMES = NO + +# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen +# will interpret the first line (until the first dot) of a JavaDoc-style +# comment as the brief description. If set to NO, the JavaDoc +# comments will behave just like regular Qt-style comments +# (thus requiring an explicit @brief command for a brief description.) + +JAVADOC_AUTOBRIEF = YES + +# If the QT_AUTOBRIEF tag is set to YES then Doxygen will +# interpret the first line (until the first dot) of a Qt-style +# comment as the brief description. If set to NO, the comments +# will behave just like regular Qt-style comments (thus requiring +# an explicit \brief command for a brief description.) + +QT_AUTOBRIEF = NO + +# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen +# treat a multi-line C++ special comment block (i.e. a block of //! or /// +# comments) as a brief description. This used to be the default behaviour. +# The new default is to treat a multi-line C++ comment block as a detailed +# description. Set this tag to YES if you prefer the old behaviour instead. + +MULTILINE_CPP_IS_BRIEF = NO + +# If the DETAILS_AT_TOP tag is set to YES then Doxygen +# will output the detailed description near the top, like JavaDoc. +# If set to NO, the detailed description appears after the member +# documentation. + +DETAILS_AT_TOP = NO + +# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented +# member inherits the documentation from any documented member that it +# re-implements. + +INHERIT_DOCS = YES + +# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce +# a new page for each member. If set to NO, the documentation of a member will +# be part of the file/class/namespace that contains it. + +SEPARATE_MEMBER_PAGES = NO + +# The TAB_SIZE tag can be used to set the number of spaces in a tab. +# Doxygen uses this value to replace tabs by spaces in code fragments. + +TAB_SIZE = 4 + +# This tag can be used to specify a number of aliases that acts +# as commands in the documentation. An alias has the form "name=value". +# For example adding "sideeffect=\par Side Effects:\n" will allow you to +# put the command \sideeffect (or @sideeffect) in the documentation, which +# will result in a user-defined paragraph with heading "Side Effects:". +# You can put \n's in the value part of an alias to insert newlines. + +ALIASES = + +# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C +# sources only. Doxygen will then generate output that is more tailored for C. +# For instance, some of the names that are used will be different. The list +# of all members will be omitted, etc. + +OPTIMIZE_OUTPUT_FOR_C = YES + +# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java +# sources only. Doxygen will then generate output that is more tailored for Java. +# For instance, namespaces will be presented as packages, qualified scopes +# will look different, etc. + +OPTIMIZE_OUTPUT_JAVA = NO + +# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want to +# include (a tag file for) the STL sources as input, then you should +# set this tag to YES in order to let doxygen match functions declarations and +# definitions whose arguments contain STL classes (e.g. func(std::string); v.s. +# func(std::string) {}). This also make the inheritance and collaboration +# diagrams that involve STL classes more complete and accurate. + +BUILTIN_STL_SUPPORT = NO + +# If you use Microsoft's C++/CLI language, you should set this option to YES to +# enable parsing support. + +CPP_CLI_SUPPORT = NO + +# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC +# tag is set to YES, then doxygen will reuse the documentation of the first +# member in the group (if any) for the other members of the group. By default +# all members of a group must be documented explicitly. + +DISTRIBUTE_GROUP_DOC = NO + +# Set the SUBGROUPING tag to YES (the default) to allow class member groups of +# the same type (for instance a group of public functions) to be put as a +# subgroup of that type (e.g. under the Public Functions section). Set it to +# NO to prevent subgrouping. Alternatively, this can be done per class using +# the \nosubgrouping command. + +SUBGROUPING = YES + +#--------------------------------------------------------------------------- +# Build related configuration options +#--------------------------------------------------------------------------- + +# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in +# documentation are documented, even if no documentation was available. +# Private class members and static file members will be hidden unless +# the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES + +EXTRACT_ALL = NO + +# If the EXTRACT_PRIVATE tag is set to YES all private members of a class +# will be included in the documentation. + +EXTRACT_PRIVATE = NO + +# If the EXTRACT_STATIC tag is set to YES all static members of a file +# will be included in the documentation. + +EXTRACT_STATIC = YES + +# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs) +# defined locally in source files will be included in the documentation. +# If set to NO only classes defined in header files are included. + +EXTRACT_LOCAL_CLASSES = YES + +# This flag is only useful for Objective-C code. When set to YES local +# methods, which are defined in the implementation section but not in +# the interface are included in the documentation. +# If set to NO (the default) only methods in the interface are included. + +EXTRACT_LOCAL_METHODS = NO + +# If this flag is set to YES, the members of anonymous namespaces will be extracted +# and appear in the documentation as a namespace called 'anonymous_namespace{file}', +# where file will be replaced with the base name of the file that contains the anonymous +# namespace. By default anonymous namespace are hidden. + +EXTRACT_ANON_NSPACES = NO + +# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all +# undocumented members of documented classes, files or namespaces. +# If set to NO (the default) these members will be included in the +# various overviews, but no documentation section is generated. +# This option has no effect if EXTRACT_ALL is enabled. + +HIDE_UNDOC_MEMBERS = NO + +# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all +# undocumented classes that are normally visible in the class hierarchy. +# If set to NO (the default) these classes will be included in the various +# overviews. This option has no effect if EXTRACT_ALL is enabled. + +HIDE_UNDOC_CLASSES = NO + +# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all +# friend (class|struct|union) declarations. +# If set to NO (the default) these declarations will be included in the +# documentation. + +HIDE_FRIEND_COMPOUNDS = NO + +# If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any +# documentation blocks found inside the body of a function. +# If set to NO (the default) these blocks will be appended to the +# function's detailed documentation block. + +HIDE_IN_BODY_DOCS = NO + +# The INTERNAL_DOCS tag determines if documentation +# that is typed after a \internal command is included. If the tag is set +# to NO (the default) then the documentation will be excluded. +# Set it to YES to include the internal documentation. + +INTERNAL_DOCS = NO + +# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate +# file names in lower-case letters. If set to YES upper-case letters are also +# allowed. This is useful if you have classes or files whose names only differ +# in case and if your file system supports case sensitive file names. Windows +# and Mac users are advised to set this option to NO. + +CASE_SENSE_NAMES = YES + +# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen +# will show members with their full class and namespace scopes in the +# documentation. If set to YES the scope will be hidden. + +HIDE_SCOPE_NAMES = NO + +# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen +# will put a list of the files that are included by a file in the documentation +# of that file. + +SHOW_INCLUDE_FILES = YES + +# If the INLINE_INFO tag is set to YES (the default) then a tag [inline] +# is inserted in the documentation for inline members. + +INLINE_INFO = YES + +# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen +# will sort the (detailed) documentation of file and class members +# alphabetically by member name. If set to NO the members will appear in +# declaration order. + +SORT_MEMBER_DOCS = NO + +# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the +# brief documentation of file, namespace and class members alphabetically +# by member name. If set to NO (the default) the members will appear in +# declaration order. + +SORT_BRIEF_DOCS = NO + +# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be +# sorted by fully-qualified names, including namespaces. If set to +# NO (the default), the class list will be sorted only by class name, +# not including the namespace part. +# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES. +# Note: This option applies only to the class list, not to the +# alphabetical list. + +SORT_BY_SCOPE_NAME = NO + +# The GENERATE_TODOLIST tag can be used to enable (YES) or +# disable (NO) the todo list. This list is created by putting \todo +# commands in the documentation. + +GENERATE_TODOLIST = YES + +# The GENERATE_TESTLIST tag can be used to enable (YES) or +# disable (NO) the test list. This list is created by putting \test +# commands in the documentation. + +GENERATE_TESTLIST = YES + +# The GENERATE_BUGLIST tag can be used to enable (YES) or +# disable (NO) the bug list. This list is created by putting \bug +# commands in the documentation. + +GENERATE_BUGLIST = YES + +# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or +# disable (NO) the deprecated list. This list is created by putting +# \deprecated commands in the documentation. + +GENERATE_DEPRECATEDLIST= YES + +# The ENABLED_SECTIONS tag can be used to enable conditional +# documentation sections, marked by \if sectionname ... \endif. + +ENABLED_SECTIONS = + +# The MAX_INITIALIZER_LINES tag determines the maximum number of lines +# the initial value of a variable or define consists of for it to appear in +# the documentation. If the initializer consists of more lines than specified +# here it will be hidden. Use a value of 0 to hide initializers completely. +# The appearance of the initializer of individual variables and defines in the +# documentation can be controlled using \showinitializer or \hideinitializer +# command in the documentation regardless of this setting. + +MAX_INITIALIZER_LINES = 30 + +# Set the SHOW_USED_FILES tag to NO to disable the list of files generated +# at the bottom of the documentation of classes and structs. If set to YES the +# list will mention the files that were used to generate the documentation. + +SHOW_USED_FILES = YES + +# If the sources in your project are distributed over multiple directories +# then setting the SHOW_DIRECTORIES tag to YES will show the directory hierarchy +# in the documentation. The default is NO. + +SHOW_DIRECTORIES = NO + +# The FILE_VERSION_FILTER tag can be used to specify a program or script that +# doxygen should invoke to get the current version for each file (typically from the +# version control system). Doxygen will invoke the program by executing (via +# popen()) the command <command> <input-file>, where <command> is the value of +# the FILE_VERSION_FILTER tag, and <input-file> is the name of an input file +# provided by doxygen. Whatever the program writes to standard output +# is used as the file version. See the manual for examples. + +FILE_VERSION_FILTER = + +#--------------------------------------------------------------------------- +# configuration options related to warning and progress messages +#--------------------------------------------------------------------------- + +# The QUIET tag can be used to turn on/off the messages that are generated +# by doxygen. Possible values are YES and NO. If left blank NO is used. + +QUIET = NO + +# The WARNINGS tag can be used to turn on/off the warning messages that are +# generated by doxygen. Possible values are YES and NO. If left blank +# NO is used. + +WARNINGS = YES + +# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings +# for undocumented members. If EXTRACT_ALL is set to YES then this flag will +# automatically be disabled. + +WARN_IF_UNDOCUMENTED = YES + +# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for +# potential errors in the documentation, such as not documenting some +# parameters in a documented function, or documenting parameters that +# don't exist or using markup commands wrongly. + +WARN_IF_DOC_ERROR = YES + +# This WARN_NO_PARAMDOC option can be abled to get warnings for +# functions that are documented, but have no documentation for their parameters +# or return value. If set to NO (the default) doxygen will only warn about +# wrong or incomplete parameter documentation, but not about the absence of +# documentation. + +WARN_NO_PARAMDOC = NO + +# The WARN_FORMAT tag determines the format of the warning messages that +# doxygen can produce. The string should contain the $file, $line, and $text +# tags, which will be replaced by the file and line number from which the +# warning originated and the warning text. Optionally the format may contain +# $version, which will be replaced by the version of the file (if it could +# be obtained via FILE_VERSION_FILTER) + +WARN_FORMAT = "$file:$line: $text" + +# The WARN_LOGFILE tag can be used to specify a file to which warning +# and error messages should be written. If left blank the output is written +# to stderr. + +WARN_LOGFILE = + +#--------------------------------------------------------------------------- +# configuration options related to the input files +#--------------------------------------------------------------------------- + +# The INPUT tag can be used to specify the files and/or directories that contain +# documented source files. You may enter file names like "myfile.cpp" or +# directories like "/usr/src/myproject". Separate the files or directories +# with spaces. + +INPUT = @top_srcdir@/libusb + +# This tag can be used to specify the character encoding of the source files that +# doxygen parses. Internally doxygen uses the UTF-8 encoding, which is also the default +# input encoding. Doxygen uses libiconv (or the iconv built into libc) for the transcoding. +# See http://www.gnu.org/software/libiconv for the list of possible encodings. + +INPUT_ENCODING = UTF-8 + +# If the value of the INPUT tag contains directories, you can use the +# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp +# and *.h) to filter out the source-files in the directories. If left +# blank the following patterns are tested: +# *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx +# *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.py + +FILE_PATTERNS = + +# The RECURSIVE tag can be used to turn specify whether or not subdirectories +# should be searched for input files as well. Possible values are YES and NO. +# If left blank NO is used. + +RECURSIVE = NO + +# The EXCLUDE tag can be used to specify files and/or directories that should +# excluded from the INPUT source files. This way you can easily exclude a +# subdirectory from a directory tree whose root is specified with the INPUT tag. + +EXCLUDE = @top_srcdir@/libusb/libusbi.h + +# The EXCLUDE_SYMLINKS tag can be used select whether or not files or +# directories that are symbolic links (a Unix filesystem feature) are excluded +# from the input. + +EXCLUDE_SYMLINKS = NO + +# If the value of the INPUT tag contains directories, you can use the +# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude +# certain files from those directories. Note that the wildcards are matched +# against the file with absolute path, so to exclude all test directories +# for example use the pattern */test/* + +EXCLUDE_PATTERNS = + +# The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names +# (namespaces, classes, functions, etc.) that should be excluded from the output. +# The symbol name can be a fully qualified name, a word, or if the wildcard * is used, +# a substring. Examples: ANamespace, AClass, AClass::ANamespace, ANamespace::*Test + +EXCLUDE_SYMBOLS = + +# The EXAMPLE_PATH tag can be used to specify one or more files or +# directories that contain example code fragments that are included (see +# the \include command). + +EXAMPLE_PATH = + +# If the value of the EXAMPLE_PATH tag contains directories, you can use the +# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp +# and *.h) to filter out the source-files in the directories. If left +# blank all files are included. + +EXAMPLE_PATTERNS = + +# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be +# searched for input files to be used with the \include or \dontinclude +# commands irrespective of the value of the RECURSIVE tag. +# Possible values are YES and NO. If left blank NO is used. + +EXAMPLE_RECURSIVE = NO + +# The IMAGE_PATH tag can be used to specify one or more files or +# directories that contain image that are included in the documentation (see +# the \image command). + +IMAGE_PATH = + +# The INPUT_FILTER tag can be used to specify a program that doxygen should +# invoke to filter for each input file. Doxygen will invoke the filter program +# by executing (via popen()) the command <filter> <input-file>, where <filter> +# is the value of the INPUT_FILTER tag, and <input-file> is the name of an +# input file. Doxygen will then use the output that the filter program writes +# to standard output. If FILTER_PATTERNS is specified, this tag will be +# ignored. + +INPUT_FILTER = + +# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern +# basis. Doxygen will compare the file name with each pattern and apply the +# filter if there is a match. The filters are a list of the form: +# pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further +# info on how filters are used. If FILTER_PATTERNS is empty, INPUT_FILTER +# is applied to all files. + +FILTER_PATTERNS = + +# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using +# INPUT_FILTER) will be used to filter the input files when producing source +# files to browse (i.e. when SOURCE_BROWSER is set to YES). + +FILTER_SOURCE_FILES = NO + +#--------------------------------------------------------------------------- +# configuration options related to source browsing +#--------------------------------------------------------------------------- + +# If the SOURCE_BROWSER tag is set to YES then a list of source files will +# be generated. Documented entities will be cross-referenced with these sources. +# Note: To get rid of all source code in the generated output, make sure also +# VERBATIM_HEADERS is set to NO. If you have enabled CALL_GRAPH or CALLER_GRAPH +# then you must also enable this option. If you don't then doxygen will produce +# a warning and turn it on anyway + +SOURCE_BROWSER = NO + +# Setting the INLINE_SOURCES tag to YES will include the body +# of functions and classes directly in the documentation. + +INLINE_SOURCES = NO + +# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct +# doxygen to hide any special comment blocks from generated source code +# fragments. Normal C and C++ comments will always remain visible. + +STRIP_CODE_COMMENTS = YES + +# If the REFERENCED_BY_RELATION tag is set to YES (the default) +# then for each documented function all documented +# functions referencing it will be listed. + +REFERENCED_BY_RELATION = NO + +# If the REFERENCES_RELATION tag is set to YES (the default) +# then for each documented function all documented entities +# called/used by that function will be listed. + +REFERENCES_RELATION = NO + +# If the REFERENCES_LINK_SOURCE tag is set to YES (the default) +# and SOURCE_BROWSER tag is set to YES, then the hyperlinks from +# functions in REFERENCES_RELATION and REFERENCED_BY_RELATION lists will +# link to the source code. Otherwise they will link to the documentstion. + +REFERENCES_LINK_SOURCE = YES + +# If the USE_HTAGS tag is set to YES then the references to source code +# will point to the HTML generated by the htags(1) tool instead of doxygen +# built-in source browser. The htags tool is part of GNU's global source +# tagging system (see http://www.gnu.org/software/global/global.html). You +# will need version 4.8.6 or higher. + +USE_HTAGS = NO + +# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen +# will generate a verbatim copy of the header file for each class for +# which an include is specified. Set to NO to disable this. + +VERBATIM_HEADERS = YES + +#--------------------------------------------------------------------------- +# configuration options related to the alphabetical class index +#--------------------------------------------------------------------------- + +# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index +# of all compounds will be generated. Enable this if the project +# contains a lot of classes, structs, unions or interfaces. + +ALPHABETICAL_INDEX = YES + +# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then +# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns +# in which this list will be split (can be a number in the range [1..20]) + +COLS_IN_ALPHA_INDEX = 5 + +# In case all classes in a project start with a common prefix, all +# classes will be put under the same header in the alphabetical index. +# The IGNORE_PREFIX tag can be used to specify one or more prefixes that +# should be ignored while generating the index headers. + +IGNORE_PREFIX = + +#--------------------------------------------------------------------------- +# configuration options related to the HTML output +#--------------------------------------------------------------------------- + +# If the GENERATE_HTML tag is set to YES (the default) Doxygen will +# generate HTML output. + +GENERATE_HTML = YES + +# The HTML_OUTPUT tag is used to specify where the HTML docs will be put. +# If a relative path is entered the value of OUTPUT_DIRECTORY will be +# put in front of it. If left blank `html' will be used as the default path. + +HTML_OUTPUT = html + +# The HTML_FILE_EXTENSION tag can be used to specify the file extension for +# each generated HTML page (for example: .htm,.php,.asp). If it is left blank +# doxygen will generate files with .html extension. + +HTML_FILE_EXTENSION = .html + +# The HTML_HEADER tag can be used to specify a personal HTML header for +# each generated HTML page. If it is left blank doxygen will generate a +# standard header. + +HTML_HEADER = + +# The HTML_FOOTER tag can be used to specify a personal HTML footer for +# each generated HTML page. If it is left blank doxygen will generate a +# standard footer. + +HTML_FOOTER = + +# The HTML_STYLESHEET tag can be used to specify a user-defined cascading +# style sheet that is used by each HTML page. It can be used to +# fine-tune the look of the HTML output. If the tag is left blank doxygen +# will generate a default style sheet. Note that doxygen will try to copy +# the style sheet file to the HTML output directory, so don't put your own +# stylesheet in the HTML output directory as well, or it will be erased! + +HTML_STYLESHEET = + +# If the HTML_ALIGN_MEMBERS tag is set to YES, the members of classes, +# files or namespaces will be aligned in HTML using tables. If set to +# NO a bullet list will be used. + +HTML_ALIGN_MEMBERS = YES + +# If the GENERATE_HTMLHELP tag is set to YES, additional index files +# will be generated that can be used as input for tools like the +# Microsoft HTML help workshop to generate a compressed HTML help file (.chm) +# of the generated HTML documentation. + +GENERATE_HTMLHELP = NO + +# If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML +# documentation will contain sections that can be hidden and shown after the +# page has loaded. For this to work a browser that supports +# JavaScript and DHTML is required (for instance Mozilla 1.0+, Firefox +# Netscape 6.0+, Internet explorer 5.0+, Konqueror, or Safari). + +HTML_DYNAMIC_SECTIONS = YES + +# If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can +# be used to specify the file name of the resulting .chm file. You +# can add a path in front of the file if the result should not be +# written to the html output directory. + +CHM_FILE = + +# If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can +# be used to specify the location (absolute path including file name) of +# the HTML help compiler (hhc.exe). If non-empty doxygen will try to run +# the HTML help compiler on the generated index.hhp. + +HHC_LOCATION = + +# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag +# controls if a separate .chi index file is generated (YES) or that +# it should be included in the master .chm file (NO). + +GENERATE_CHI = NO + +# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag +# controls whether a binary table of contents is generated (YES) or a +# normal table of contents (NO) in the .chm file. + +BINARY_TOC = NO + +# The TOC_EXPAND flag can be set to YES to add extra items for group members +# to the contents of the HTML help documentation and to the tree view. + +TOC_EXPAND = NO + +# The DISABLE_INDEX tag can be used to turn on/off the condensed index at +# top of each HTML page. The value NO (the default) enables the index and +# the value YES disables it. + +DISABLE_INDEX = NO + +# This tag can be used to set the number of enum values (range [1..20]) +# that doxygen will group on one line in the generated HTML documentation. + +ENUM_VALUES_PER_LINE = 4 + +# If the GENERATE_TREEVIEW tag is set to YES, a side panel will be +# generated containing a tree-like index structure (just like the one that +# is generated for HTML Help). For this to work a browser that supports +# JavaScript, DHTML, CSS and frames is required (for instance Mozilla 1.0+, +# Netscape 6.0+, Internet explorer 5.0+, or Konqueror). Windows users are +# probably better off using the HTML help feature. + +GENERATE_TREEVIEW = NO + +# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be +# used to set the initial width (in pixels) of the frame in which the tree +# is shown. + +TREEVIEW_WIDTH = 250 + +#--------------------------------------------------------------------------- +# configuration options related to the LaTeX output +#--------------------------------------------------------------------------- + +# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will +# generate Latex output. + +GENERATE_LATEX = NO + +# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. +# If a relative path is entered the value of OUTPUT_DIRECTORY will be +# put in front of it. If left blank `latex' will be used as the default path. + +LATEX_OUTPUT = latex + +# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be +# invoked. If left blank `latex' will be used as the default command name. + +LATEX_CMD_NAME = latex + +# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to +# generate index for LaTeX. If left blank `makeindex' will be used as the +# default command name. + +MAKEINDEX_CMD_NAME = makeindex + +# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact +# LaTeX documents. This may be useful for small projects and may help to +# save some trees in general. + +COMPACT_LATEX = NO + +# The PAPER_TYPE tag can be used to set the paper type that is used +# by the printer. Possible values are: a4, a4wide, letter, legal and +# executive. If left blank a4wide will be used. + +PAPER_TYPE = a4wide + +# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX +# packages that should be included in the LaTeX output. + +EXTRA_PACKAGES = + +# The LATEX_HEADER tag can be used to specify a personal LaTeX header for +# the generated latex document. The header should contain everything until +# the first chapter. If it is left blank doxygen will generate a +# standard header. Notice: only use this tag if you know what you are doing! + +LATEX_HEADER = + +# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated +# is prepared for conversion to pdf (using ps2pdf). The pdf file will +# contain links (just like the HTML output) instead of page references +# This makes the output suitable for online browsing using a pdf viewer. + +PDF_HYPERLINKS = NO + +# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of +# plain latex in the generated Makefile. Set this option to YES to get a +# higher quality PDF documentation. + +USE_PDFLATEX = NO + +# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode. +# command to the generated LaTeX files. This will instruct LaTeX to keep +# running if errors occur, instead of asking the user for help. +# This option is also used when generating formulas in HTML. + +LATEX_BATCHMODE = NO + +# If LATEX_HIDE_INDICES is set to YES then doxygen will not +# include the index chapters (such as File Index, Compound Index, etc.) +# in the output. + +LATEX_HIDE_INDICES = NO + +#--------------------------------------------------------------------------- +# configuration options related to the RTF output +#--------------------------------------------------------------------------- + +# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output +# The RTF output is optimized for Word 97 and may not look very pretty with +# other RTF readers or editors. + +GENERATE_RTF = NO + +# The RTF_OUTPUT tag is used to specify where the RTF docs will be put. +# If a relative path is entered the value of OUTPUT_DIRECTORY will be +# put in front of it. If left blank `rtf' will be used as the default path. + +RTF_OUTPUT = rtf + +# If the COMPACT_RTF tag is set to YES Doxygen generates more compact +# RTF documents. This may be useful for small projects and may help to +# save some trees in general. + +COMPACT_RTF = NO + +# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated +# will contain hyperlink fields. The RTF file will +# contain links (just like the HTML output) instead of page references. +# This makes the output suitable for online browsing using WORD or other +# programs which support those fields. +# Note: wordpad (write) and others do not support links. + +RTF_HYPERLINKS = NO + +# Load stylesheet definitions from file. Syntax is similar to doxygen's +# config file, i.e. a series of assignments. You only have to provide +# replacements, missing definitions are set to their default value. + +RTF_STYLESHEET_FILE = + +# Set optional variables used in the generation of an rtf document. +# Syntax is similar to doxygen's config file. + +RTF_EXTENSIONS_FILE = + +#--------------------------------------------------------------------------- +# configuration options related to the man page output +#--------------------------------------------------------------------------- + +# If the GENERATE_MAN tag is set to YES (the default) Doxygen will +# generate man pages + +GENERATE_MAN = NO + +# The MAN_OUTPUT tag is used to specify where the man pages will be put. +# If a relative path is entered the value of OUTPUT_DIRECTORY will be +# put in front of it. If left blank `man' will be used as the default path. + +MAN_OUTPUT = man + +# The MAN_EXTENSION tag determines the extension that is added to +# the generated man pages (default is the subroutine's section .3) + +MAN_EXTENSION = .3 + +# If the MAN_LINKS tag is set to YES and Doxygen generates man output, +# then it will generate one additional man file for each entity +# documented in the real man page(s). These additional files +# only source the real man page, but without them the man command +# would be unable to find the correct page. The default is NO. + +MAN_LINKS = NO + +#--------------------------------------------------------------------------- +# configuration options related to the XML output +#--------------------------------------------------------------------------- + +# If the GENERATE_XML tag is set to YES Doxygen will +# generate an XML file that captures the structure of +# the code including all documentation. + +GENERATE_XML = NO + +# The XML_OUTPUT tag is used to specify where the XML pages will be put. +# If a relative path is entered the value of OUTPUT_DIRECTORY will be +# put in front of it. If left blank `xml' will be used as the default path. + +XML_OUTPUT = xml + +# The XML_SCHEMA tag can be used to specify an XML schema, +# which can be used by a validating XML parser to check the +# syntax of the XML files. + +XML_SCHEMA = + +# The XML_DTD tag can be used to specify an XML DTD, +# which can be used by a validating XML parser to check the +# syntax of the XML files. + +XML_DTD = + +# If the XML_PROGRAMLISTING tag is set to YES Doxygen will +# dump the program listings (including syntax highlighting +# and cross-referencing information) to the XML output. Note that +# enabling this will significantly increase the size of the XML output. + +XML_PROGRAMLISTING = YES + +#--------------------------------------------------------------------------- +# configuration options for the AutoGen Definitions output +#--------------------------------------------------------------------------- + +# If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will +# generate an AutoGen Definitions (see autogen.sf.net) file +# that captures the structure of the code including all +# documentation. Note that this feature is still experimental +# and incomplete at the moment. + +GENERATE_AUTOGEN_DEF = NO + +#--------------------------------------------------------------------------- +# configuration options related to the Perl module output +#--------------------------------------------------------------------------- + +# If the GENERATE_PERLMOD tag is set to YES Doxygen will +# generate a Perl module file that captures the structure of +# the code including all documentation. Note that this +# feature is still experimental and incomplete at the +# moment. + +GENERATE_PERLMOD = NO + +# If the PERLMOD_LATEX tag is set to YES Doxygen will generate +# the necessary Makefile rules, Perl scripts and LaTeX code to be able +# to generate PDF and DVI output from the Perl module output. + +PERLMOD_LATEX = NO + +# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be +# nicely formatted so it can be parsed by a human reader. This is useful +# if you want to understand what is going on. On the other hand, if this +# tag is set to NO the size of the Perl module output will be much smaller +# and Perl will parse it just the same. + +PERLMOD_PRETTY = YES + +# The names of the make variables in the generated doxyrules.make file +# are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. +# This is useful so different doxyrules.make files included by the same +# Makefile don't overwrite each other's variables. + +PERLMOD_MAKEVAR_PREFIX = + +#--------------------------------------------------------------------------- +# Configuration options related to the preprocessor +#--------------------------------------------------------------------------- + +# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will +# evaluate all C-preprocessor directives found in the sources and include +# files. + +ENABLE_PREPROCESSING = YES + +# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro +# names in the source code. If set to NO (the default) only conditional +# compilation will be performed. Macro expansion can be done in a controlled +# way by setting EXPAND_ONLY_PREDEF to YES. + +MACRO_EXPANSION = YES + +# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES +# then the macro expansion is limited to the macros specified with the +# PREDEFINED and EXPAND_AS_DEFINED tags. + +EXPAND_ONLY_PREDEF = YES + +# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files +# in the INCLUDE_PATH (see below) will be search if a #include is found. + +SEARCH_INCLUDES = YES + +# The INCLUDE_PATH tag can be used to specify one or more directories that +# contain include files that are not input files but should be processed by +# the preprocessor. + +INCLUDE_PATH = + +# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard +# patterns (like *.h and *.hpp) to filter out the header-files in the +# directories. If left blank, the patterns specified with FILE_PATTERNS will +# be used. + +INCLUDE_FILE_PATTERNS = + +# The PREDEFINED tag can be used to specify one or more macro names that +# are defined before the preprocessor is started (similar to the -D option of +# gcc). The argument of the tag is a list of macros of the form: name +# or name=definition (no spaces). If the definition and the = are +# omitted =1 is assumed. To prevent a macro definition from being +# undefined via #undef or recursively expanded use the := operator +# instead of the = operator. + +PREDEFINED = API_EXPORTED= LIBUSB_CALL= DEFAULT_VISIBILITY= + +# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then +# this tag can be used to specify a list of macro names that should be expanded. +# The macro definition that is found in the sources will be used. +# Use the PREDEFINED tag if you want to use a different macro definition. + +EXPAND_AS_DEFINED = + +# If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then +# doxygen's preprocessor will remove all function-like macros that are alone +# on a line, have an all uppercase name, and do not end with a semicolon. Such +# function macros are typically used for boiler-plate code, and will confuse +# the parser if not removed. + +SKIP_FUNCTION_MACROS = YES + +#--------------------------------------------------------------------------- +# Configuration::additions related to external references +#--------------------------------------------------------------------------- + +# The TAGFILES option can be used to specify one or more tagfiles. +# Optionally an initial location of the external documentation +# can be added for each tagfile. The format of a tag file without +# this location is as follows: +# TAGFILES = file1 file2 ... +# Adding location for the tag files is done as follows: +# TAGFILES = file1=loc1 "file2 = loc2" ... +# where "loc1" and "loc2" can be relative or absolute paths or +# URLs. If a location is present for each tag, the installdox tool +# does not have to be run to correct the links. +# Note that each tag file must have a unique name +# (where the name does NOT include the path) +# If a tag file is not located in the directory in which doxygen +# is run, you must also specify the path to the tagfile here. + +TAGFILES = + +# When a file name is specified after GENERATE_TAGFILE, doxygen will create +# a tag file that is based on the input files it reads. + +GENERATE_TAGFILE = + +# If the ALLEXTERNALS tag is set to YES all external classes will be listed +# in the class index. If set to NO only the inherited external classes +# will be listed. + +ALLEXTERNALS = NO + +# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed +# in the modules index. If set to NO, only the current project's groups will +# be listed. + +EXTERNAL_GROUPS = YES + +# The PERL_PATH should be the absolute path and name of the perl script +# interpreter (i.e. the result of `which perl'). + +PERL_PATH = /usr/bin/perl + +#--------------------------------------------------------------------------- +# Configuration options related to the dot tool +#--------------------------------------------------------------------------- + +# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will +# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base +# or super classes. Setting the tag to NO turns the diagrams off. Note that +# this option is superseded by the HAVE_DOT option below. This is only a +# fallback. It is recommended to install and use dot, since it yields more +# powerful graphs. + +CLASS_DIAGRAMS = YES + +# You can define message sequence charts within doxygen comments using the \msc +# command. Doxygen will then run the mscgen tool (see http://www.mcternan.me.uk/mscgen/) to +# produce the chart and insert it in the documentation. The MSCGEN_PATH tag allows you to +# specify the directory where the mscgen tool resides. If left empty the tool is assumed to +# be found in the default search path. + +MSCGEN_PATH = + +# If set to YES, the inheritance and collaboration graphs will hide +# inheritance and usage relations if the target is undocumented +# or is not a class. + +HIDE_UNDOC_RELATIONS = YES + +# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is +# available from the path. This tool is part of Graphviz, a graph visualization +# toolkit from AT&T and Lucent Bell Labs. The other options in this section +# have no effect if this option is set to NO (the default) + +HAVE_DOT = NO + +# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen +# will generate a graph for each documented class showing the direct and +# indirect inheritance relations. Setting this tag to YES will force the +# the CLASS_DIAGRAMS tag to NO. + +CLASS_GRAPH = YES + +# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen +# will generate a graph for each documented class showing the direct and +# indirect implementation dependencies (inheritance, containment, and +# class references variables) of the class with other documented classes. + +COLLABORATION_GRAPH = YES + +# If the GROUP_GRAPHS and HAVE_DOT tags are set to YES then doxygen +# will generate a graph for groups, showing the direct groups dependencies + +GROUP_GRAPHS = YES + +# If the UML_LOOK tag is set to YES doxygen will generate inheritance and +# collaboration diagrams in a style similar to the OMG's Unified Modeling +# Language. + +UML_LOOK = NO + +# If set to YES, the inheritance and collaboration graphs will show the +# relations between templates and their instances. + +TEMPLATE_RELATIONS = NO + +# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT +# tags are set to YES then doxygen will generate a graph for each documented +# file showing the direct and indirect include dependencies of the file with +# other documented files. + +INCLUDE_GRAPH = YES + +# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and +# HAVE_DOT tags are set to YES then doxygen will generate a graph for each +# documented header file showing the documented files that directly or +# indirectly include this file. + +INCLUDED_BY_GRAPH = YES + +# If the CALL_GRAPH, SOURCE_BROWSER and HAVE_DOT tags are set to YES then doxygen will +# generate a call dependency graph for every global function or class method. +# Note that enabling this option will significantly increase the time of a run. +# So in most cases it will be better to enable call graphs for selected +# functions only using the \callgraph command. + +CALL_GRAPH = NO + +# If the CALLER_GRAPH, SOURCE_BROWSER and HAVE_DOT tags are set to YES then doxygen will +# generate a caller dependency graph for every global function or class method. +# Note that enabling this option will significantly increase the time of a run. +# So in most cases it will be better to enable caller graphs for selected +# functions only using the \callergraph command. + +CALLER_GRAPH = NO + +# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen +# will graphical hierarchy of all classes instead of a textual one. + +GRAPHICAL_HIERARCHY = YES + +# If the DIRECTORY_GRAPH, SHOW_DIRECTORIES and HAVE_DOT tags are set to YES +# then doxygen will show the dependencies a directory has on other directories +# in a graphical way. The dependency relations are determined by the #include +# relations between the files in the directories. + +DIRECTORY_GRAPH = YES + +# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images +# generated by dot. Possible values are png, jpg, or gif +# If left blank png will be used. + +DOT_IMAGE_FORMAT = png + +# The tag DOT_PATH can be used to specify the path where the dot tool can be +# found. If left blank, it is assumed the dot tool can be found in the path. + +DOT_PATH = + +# The DOTFILE_DIRS tag can be used to specify one or more directories that +# contain dot files that are included in the documentation (see the +# \dotfile command). + +DOTFILE_DIRS = + +# The MAX_DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of +# nodes that will be shown in the graph. If the number of nodes in a graph +# becomes larger than this value, doxygen will truncate the graph, which is +# visualized by representing a node as a red box. Note that doxygen if the number +# of direct children of the root node in a graph is already larger than +# MAX_DOT_GRAPH_NOTES then the graph will not be shown at all. Also note +# that the size of a graph can be further restricted by MAX_DOT_GRAPH_DEPTH. + +DOT_GRAPH_MAX_NODES = 50 + +# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the +# graphs generated by dot. A depth value of 3 means that only nodes reachable +# from the root by following a path via at most 3 edges will be shown. Nodes +# that lay further from the root node will be omitted. Note that setting this +# option to 1 or 2 may greatly reduce the computation time needed for large +# code bases. Also note that the size of a graph can be further restricted by +# DOT_GRAPH_MAX_NODES. Using a depth of 0 means no depth restriction. + +MAX_DOT_GRAPH_DEPTH = 0 + +# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent +# background. This is disabled by default, which results in a white background. +# Warning: Depending on the platform used, enabling this option may lead to +# badly anti-aliased labels on the edges of a graph (i.e. they become hard to +# read). + +DOT_TRANSPARENT = NO + +# Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output +# files in one run (i.e. multiple -o and -T options on the command line). This +# makes dot run faster, but since only newer versions of dot (>1.8.10) +# support this, this feature is disabled by default. + +DOT_MULTI_TARGETS = NO + +# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will +# generate a legend page explaining the meaning of the various boxes and +# arrows in the dot generated graphs. + +GENERATE_LEGEND = YES + +# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will +# remove the intermediate dot files that are used to generate +# the various graphs. + +DOT_CLEANUP = YES + +#--------------------------------------------------------------------------- +# Configuration::additions related to the search engine +#--------------------------------------------------------------------------- + +# The SEARCHENGINE tag specifies whether or not a search engine should be +# used. If set to NO the values of all tags below this one will be ignored. + +SEARCHENGINE = NO diff --git a/examples/Makefile.am b/examples/Makefile.am new file mode 100644 index 0000000..c7630d2 --- /dev/null +++ b/examples/Makefile.am @@ -0,0 +1,21 @@ +INCLUDES = -I$(top_srcdir)/libusb +noinst_PROGRAMS = listdevs + +listdevs_SOURCES = listdevs.c +listdevs_LDADD = ../libusb/libusb-1.0.la + +if HAVE_SIGACTION +dpfp_SOURCES = dpfp.c +dpfp_LDADD = ../libusb/libusb-1.0.la +noinst_PROGRAMS += dpfp +endif + +if THREADS_POSIX +if HAVE_SIGACTION +dpfp_threaded_SOURCES = dpfp_threaded.c +dpfp_threaded_CFLAGS = $(THREAD_CFLAGS) $(AM_CFLAGS) +dpfp_threaded_LDADD = ../libusb/libusb-1.0.la +noinst_PROGRAMS += dpfp_threaded +endif +endif + diff --git a/examples/dpfp.c b/examples/dpfp.c new file mode 100644 index 0000000..ecd5a92 --- /dev/null +++ b/examples/dpfp.c @@ -0,0 +1,507 @@ +/* + * libusb example program to manipulate U.are.U 4000B fingerprint scanner. + * Copyright (C) 2007 Daniel Drake <dsd@gentoo.org> + * + * Basic image capture program only, does not consider the powerup quirks or + * the fact that image encryption may be enabled. Not expected to work + * flawlessly all of the time. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <errno.h> +#include <signal.h> +#include <string.h> +#include <stdio.h> +#include <stdlib.h> + +#include <libusb.h> + +#define EP_INTR (1 | LIBUSB_ENDPOINT_IN) +#define EP_DATA (2 | LIBUSB_ENDPOINT_IN) +#define CTRL_IN (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN) +#define CTRL_OUT (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT) +#define USB_RQ 0x04 +#define INTR_LENGTH 64 + +enum { + MODE_INIT = 0x00, + MODE_AWAIT_FINGER_ON = 0x10, + MODE_AWAIT_FINGER_OFF = 0x12, + MODE_CAPTURE = 0x20, + MODE_SHUT_UP = 0x30, + MODE_READY = 0x80, +}; + +static int next_state(void); + +enum { + STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON = 1, + STATE_AWAIT_IRQ_FINGER_DETECTED, + STATE_AWAIT_MODE_CHANGE_CAPTURE, + STATE_AWAIT_IMAGE, + STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF, + STATE_AWAIT_IRQ_FINGER_REMOVED, +}; + +static int state = 0; +static struct libusb_device_handle *devh = NULL; +static unsigned char imgbuf[0x1b340]; +static unsigned char irqbuf[INTR_LENGTH]; +static struct libusb_transfer *img_transfer = NULL; +static struct libusb_transfer *irq_transfer = NULL; +static int img_idx = 0; +static int do_exit = 0; + +static int find_dpfp_device(void) +{ + devh = libusb_open_device_with_vid_pid(NULL, 0x05ba, 0x000a); + return devh ? 0 : -EIO; +} + +static int print_f0_data(void) +{ + unsigned char data[0x10]; + int r; + unsigned int i; + + r = libusb_control_transfer(devh, CTRL_IN, USB_RQ, 0xf0, 0, data, + sizeof(data), 0); + if (r < 0) { + fprintf(stderr, "F0 error %d\n", r); + return r; + } + if ((unsigned int) r < sizeof(data)) { + fprintf(stderr, "short read (%d)\n", r); + return -1; + } + + printf("F0 data:"); + for (i = 0; i < sizeof(data); i++) + printf("%02x ", data[i]); + printf("\n"); + return 0; +} + +static int get_hwstat(unsigned char *status) +{ + int r; + + r = libusb_control_transfer(devh, CTRL_IN, USB_RQ, 0x07, 0, status, 1, 0); + if (r < 0) { + fprintf(stderr, "read hwstat error %d\n", r); + return r; + } + if ((unsigned int) r < 1) { + fprintf(stderr, "short read (%d)\n", r); + return -1; + } + + printf("hwstat reads %02x\n", *status); + return 0; +} + +static int set_hwstat(unsigned char data) +{ + int r; + + printf("set hwstat to %02x\n", data); + r = libusb_control_transfer(devh, CTRL_OUT, USB_RQ, 0x07, 0, &data, 1, 0); + if (r < 0) { + fprintf(stderr, "set hwstat error %d\n", r); + return r; + } + if ((unsigned int) r < 1) { + fprintf(stderr, "short write (%d)", r); + return -1; + } + + return 0; +} + +static int set_mode(unsigned char data) +{ + int r; + printf("set mode %02x\n", data); + + r = libusb_control_transfer(devh, CTRL_OUT, USB_RQ, 0x4e, 0, &data, 1, 0); + if (r < 0) { + fprintf(stderr, "set mode error %d\n", r); + return r; + } + if ((unsigned int) r < 1) { + fprintf(stderr, "short write (%d)", r); + return -1; + } + + return 0; +} + +static void LIBUSB_CALL cb_mode_changed(struct libusb_transfer *transfer) +{ + if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { + fprintf(stderr, "mode change transfer not completed!\n"); + do_exit = 2; + } + + printf("async cb_mode_changed length=%d actual_length=%d\n", + transfer->length, transfer->actual_length); + if (next_state() < 0) + do_exit = 2; +} + +static int set_mode_async(unsigned char data) +{ + unsigned char *buf = malloc(LIBUSB_CONTROL_SETUP_SIZE + 1); + struct libusb_transfer *transfer; + + if (!buf) + return -ENOMEM; + + transfer = libusb_alloc_transfer(0); + if (!transfer) { + free(buf); + return -ENOMEM; + } + + printf("async set mode %02x\n", data); + libusb_fill_control_setup(buf, CTRL_OUT, USB_RQ, 0x4e, 0, 1); + buf[LIBUSB_CONTROL_SETUP_SIZE] = data; + libusb_fill_control_transfer(transfer, devh, buf, cb_mode_changed, NULL, + 1000); + + transfer->flags = LIBUSB_TRANSFER_SHORT_NOT_OK + | LIBUSB_TRANSFER_FREE_BUFFER | LIBUSB_TRANSFER_FREE_TRANSFER; + return libusb_submit_transfer(transfer); +} + +static int do_sync_intr(unsigned char *data) +{ + int r; + int transferred; + + r = libusb_interrupt_transfer(devh, EP_INTR, data, INTR_LENGTH, + &transferred, 1000); + if (r < 0) { + fprintf(stderr, "intr error %d\n", r); + return r; + } + if (transferred < INTR_LENGTH) { + fprintf(stderr, "short read (%d)\n", r); + return -1; + } + + printf("recv interrupt %04x\n", *((uint16_t *) data)); + return 0; +} + +static int sync_intr(unsigned char type) +{ + int r; + unsigned char data[INTR_LENGTH]; + + while (1) { + r = do_sync_intr(data); + if (r < 0) + return r; + if (data[0] == type) + return 0; + } +} + +static int save_to_file(unsigned char *data) +{ + FILE *fd; + char filename[64]; + + snprintf(filename, sizeof(filename), "finger%d.pgm", img_idx++); + fd = fopen(filename, "w"); + if (!fd) + return -1; + + fputs("P5 384 289 255 ", fd); + (void) fwrite(data + 64, 1, 384*289, fd); + fclose(fd); + printf("saved image to %s\n", filename); + return 0; +} + +static int next_state(void) +{ + int r = 0; + printf("old state: %d\n", state); + switch (state) { + case STATE_AWAIT_IRQ_FINGER_REMOVED: + state = STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON; + r = set_mode_async(MODE_AWAIT_FINGER_ON); + break; + case STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON: + state = STATE_AWAIT_IRQ_FINGER_DETECTED; + break; + case STATE_AWAIT_IRQ_FINGER_DETECTED: + state = STATE_AWAIT_MODE_CHANGE_CAPTURE; + r = set_mode_async(MODE_CAPTURE); + break; + case STATE_AWAIT_MODE_CHANGE_CAPTURE: + state = STATE_AWAIT_IMAGE; + break; + case STATE_AWAIT_IMAGE: + state = STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF; + r = set_mode_async(MODE_AWAIT_FINGER_OFF); + break; + case STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF: + state = STATE_AWAIT_IRQ_FINGER_REMOVED; + break; + default: + printf("unrecognised state %d\n", state); + } + if (r < 0) { + fprintf(stderr, "error detected changing state\n"); + return r; + } + + printf("new state: %d\n", state); + return 0; +} + +static void LIBUSB_CALL cb_irq(struct libusb_transfer *transfer) +{ + unsigned char irqtype = transfer->buffer[0]; + + if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { + fprintf(stderr, "irq transfer status %d?\n", transfer->status); + do_exit = 2; + libusb_free_transfer(transfer); + irq_transfer = NULL; + return; + } + + printf("IRQ callback %02x\n", irqtype); + switch (state) { + case STATE_AWAIT_IRQ_FINGER_DETECTED: + if (irqtype == 0x01) { + if (next_state() < 0) { + do_exit = 2; + return; + } + } else { + printf("finger-on-sensor detected in wrong state!\n"); + } + break; + case STATE_AWAIT_IRQ_FINGER_REMOVED: + if (irqtype == 0x02) { + if (next_state() < 0) { + do_exit = 2; + return; + } + } else { + printf("finger-on-sensor detected in wrong state!\n"); + } + break; + } + if (libusb_submit_transfer(irq_transfer) < 0) + do_exit = 2; +} + +static void LIBUSB_CALL cb_img(struct libusb_transfer *transfer) +{ + if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { + fprintf(stderr, "img transfer status %d?\n", transfer->status); + do_exit = 2; + libusb_free_transfer(transfer); + img_transfer = NULL; + return; + } + + printf("Image callback\n"); + save_to_file(imgbuf); + if (next_state() < 0) { + do_exit = 2; + return; + } + if (libusb_submit_transfer(img_transfer) < 0) + do_exit = 2; +} + +static int init_capture(void) +{ + int r; + + r = libusb_submit_transfer(irq_transfer); + if (r < 0) + return r; + + r = libusb_submit_transfer(img_transfer); + if (r < 0) { + libusb_cancel_transfer(irq_transfer); + while (irq_transfer) + if (libusb_handle_events(NULL) < 0) + break; + return r; + } + + /* start state machine */ + state = STATE_AWAIT_IRQ_FINGER_REMOVED; + return next_state(); +} + +static int do_init(void) +{ + unsigned char status; + int r; + + r = get_hwstat(&status); + if (r < 0) + return r; + + if (!(status & 0x80)) { + r = set_hwstat(status | 0x80); + if (r < 0) + return r; + r = get_hwstat(&status); + if (r < 0) + return r; + } + + status &= ~0x80; + r = set_hwstat(status); + if (r < 0) + return r; + + r = get_hwstat(&status); + if (r < 0) + return r; + + r = sync_intr(0x56); + if (r < 0) + return r; + + return 0; +} + +static int alloc_transfers(void) +{ + img_transfer = libusb_alloc_transfer(0); + if (!img_transfer) + return -ENOMEM; + + irq_transfer = libusb_alloc_transfer(0); + if (!irq_transfer) + return -ENOMEM; + + libusb_fill_bulk_transfer(img_transfer, devh, EP_DATA, imgbuf, + sizeof(imgbuf), cb_img, NULL, 0); + libusb_fill_interrupt_transfer(irq_transfer, devh, EP_INTR, irqbuf, + sizeof(irqbuf), cb_irq, NULL, 0); + + return 0; +} + +static void sighandler(int signum) +{ + do_exit = 1; +} + +int main(void) +{ + struct sigaction sigact; + int r = 1; + + r = libusb_init(NULL); + if (r < 0) { + fprintf(stderr, "failed to initialise libusb\n"); + exit(1); + } + + r = find_dpfp_device(); + if (r < 0) { + fprintf(stderr, "Could not find/open device\n"); + goto out; + } + + r = libusb_claim_interface(devh, 0); + if (r < 0) { + fprintf(stderr, "usb_claim_interface error %d\n", r); + goto out; + } + printf("claimed interface\n"); + + r = print_f0_data(); + if (r < 0) + goto out_release; + + r = do_init(); + if (r < 0) + goto out_deinit; + + /* async from here onwards */ + + r = alloc_transfers(); + if (r < 0) + goto out_deinit; + + r = init_capture(); + if (r < 0) + goto out_deinit; + + sigact.sa_handler = sighandler; + sigemptyset(&sigact.sa_mask); + sigact.sa_flags = 0; + sigaction(SIGINT, &sigact, NULL); + sigaction(SIGTERM, &sigact, NULL); + sigaction(SIGQUIT, &sigact, NULL); + + while (!do_exit) { + r = libusb_handle_events(NULL); + if (r < 0) + goto out_deinit; + } + + printf("shutting down...\n"); + + if (irq_transfer) { + r = libusb_cancel_transfer(irq_transfer); + if (r < 0) + goto out_deinit; + } + + if (img_transfer) { + r = libusb_cancel_transfer(img_transfer); + if (r < 0) + goto out_deinit; + } + + while (irq_transfer || img_transfer) + if (libusb_handle_events(NULL) < 0) + break; + + if (do_exit == 1) + r = 0; + else + r = 1; + +out_deinit: + libusb_free_transfer(img_transfer); + libusb_free_transfer(irq_transfer); + set_mode(0); + set_hwstat(0x80); +out_release: + libusb_release_interface(devh, 0); +out: + libusb_close(devh); + libusb_exit(NULL); + return r >= 0 ? r : -r; +} + diff --git a/examples/dpfp_threaded.c b/examples/dpfp_threaded.c new file mode 100644 index 0000000..93de9d7 --- /dev/null +++ b/examples/dpfp_threaded.c @@ -0,0 +1,545 @@ +/* + * libusb example program to manipulate U.are.U 4000B fingerprint scanner. + * Copyright (C) 2007 Daniel Drake <dsd@gentoo.org> + * + * Basic image capture program only, does not consider the powerup quirks or + * the fact that image encryption may be enabled. Not expected to work + * flawlessly all of the time. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <errno.h> +#include <pthread.h> +#include <signal.h> +#include <string.h> +#include <stdio.h> +#include <stdlib.h> + +#include <libusb.h> + +#define EP_INTR (1 | LIBUSB_ENDPOINT_IN) +#define EP_DATA (2 | LIBUSB_ENDPOINT_IN) +#define CTRL_IN (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN) +#define CTRL_OUT (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT) +#define USB_RQ 0x04 +#define INTR_LENGTH 64 + +enum { + MODE_INIT = 0x00, + MODE_AWAIT_FINGER_ON = 0x10, + MODE_AWAIT_FINGER_OFF = 0x12, + MODE_CAPTURE = 0x20, + MODE_SHUT_UP = 0x30, + MODE_READY = 0x80, +}; + +static int next_state(void); + +enum { + STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON = 1, + STATE_AWAIT_IRQ_FINGER_DETECTED, + STATE_AWAIT_MODE_CHANGE_CAPTURE, + STATE_AWAIT_IMAGE, + STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF, + STATE_AWAIT_IRQ_FINGER_REMOVED, +}; + +static int state = 0; +static struct libusb_device_handle *devh = NULL; +static unsigned char imgbuf[0x1b340]; +static unsigned char irqbuf[INTR_LENGTH]; +static struct libusb_transfer *img_transfer = NULL; +static struct libusb_transfer *irq_transfer = NULL; +static int img_idx = 0; +static int do_exit = 0; + +static pthread_t poll_thread; +static pthread_cond_t exit_cond = PTHREAD_COND_INITIALIZER; +static pthread_mutex_t exit_cond_lock = PTHREAD_MUTEX_INITIALIZER; + +static void request_exit(int code) +{ + do_exit = code; + pthread_cond_signal(&exit_cond); +} + +static void *poll_thread_main(void *arg) +{ + int r = 0; + printf("poll thread running\n"); + + while (!do_exit) { + struct timeval tv = { 1, 0 }; + r = libusb_handle_events_timeout(NULL, &tv); + if (r < 0) { + request_exit(2); + break; + } + } + + printf("poll thread shutting down\n"); + return NULL; +} + +static int find_dpfp_device(void) +{ + devh = libusb_open_device_with_vid_pid(NULL, 0x05ba, 0x000a); + return devh ? 0 : -EIO; +} + +static int print_f0_data(void) +{ + unsigned char data[0x10]; + int r; + unsigned int i; + + r = libusb_control_transfer(devh, CTRL_IN, USB_RQ, 0xf0, 0, data, + sizeof(data), 0); + if (r < 0) { + fprintf(stderr, "F0 error %d\n", r); + return r; + } + if ((unsigned int) r < sizeof(data)) { + fprintf(stderr, "short read (%d)\n", r); + return -1; + } + + printf("F0 data:"); + for (i = 0; i < sizeof(data); i++) + printf("%02x ", data[i]); + printf("\n"); + return 0; +} + +static int get_hwstat(unsigned char *status) +{ + int r; + + r = libusb_control_transfer(devh, CTRL_IN, USB_RQ, 0x07, 0, status, 1, 0); + if (r < 0) { + fprintf(stderr, "read hwstat error %d\n", r); + return r; + } + if ((unsigned int) r < 1) { + fprintf(stderr, "short read (%d)\n", r); + return -1; + } + + printf("hwstat reads %02x\n", *status); + return 0; +} + +static int set_hwstat(unsigned char data) +{ + int r; + + printf("set hwstat to %02x\n", data); + r = libusb_control_transfer(devh, CTRL_OUT, USB_RQ, 0x07, 0, &data, 1, 0); + if (r < 0) { + fprintf(stderr, "set hwstat error %d\n", r); + return r; + } + if ((unsigned int) r < 1) { + fprintf(stderr, "short write (%d)", r); + return -1; + } + + return 0; +} + +static int set_mode(unsigned char data) +{ + int r; + printf("set mode %02x\n", data); + + r = libusb_control_transfer(devh, CTRL_OUT, USB_RQ, 0x4e, 0, &data, 1, 0); + if (r < 0) { + fprintf(stderr, "set mode error %d\n", r); + return r; + } + if ((unsigned int) r < 1) { + fprintf(stderr, "short write (%d)", r); + return -1; + } + + return 0; +} + +static void LIBUSB_CALL cb_mode_changed(struct libusb_transfer *transfer) +{ + if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { + fprintf(stderr, "mode change transfer not completed!\n"); + request_exit(2); + } + + printf("async cb_mode_changed length=%d actual_length=%d\n", + transfer->length, transfer->actual_length); + if (next_state() < 0) + request_exit(2); +} + +static int set_mode_async(unsigned char data) +{ + unsigned char *buf = malloc(LIBUSB_CONTROL_SETUP_SIZE + 1); + struct libusb_transfer *transfer; + + if (!buf) + return -ENOMEM; + + transfer = libusb_alloc_transfer(0); + if (!transfer) { + free(buf); + return -ENOMEM; + } + + printf("async set mode %02x\n", data); + libusb_fill_control_setup(buf, CTRL_OUT, USB_RQ, 0x4e, 0, 1); + buf[LIBUSB_CONTROL_SETUP_SIZE] = data; + libusb_fill_control_transfer(transfer, devh, buf, cb_mode_changed, NULL, + 1000); + + transfer->flags = LIBUSB_TRANSFER_SHORT_NOT_OK + | LIBUSB_TRANSFER_FREE_BUFFER | LIBUSB_TRANSFER_FREE_TRANSFER; + return libusb_submit_transfer(transfer); +} + +static int do_sync_intr(unsigned char *data) +{ + int r; + int transferred; + + r = libusb_interrupt_transfer(devh, EP_INTR, data, INTR_LENGTH, + &transferred, 1000); + if (r < 0) { + fprintf(stderr, "intr error %d\n", r); + return r; + } + if (transferred < INTR_LENGTH) { + fprintf(stderr, "short read (%d)\n", r); + return -1; + } + + printf("recv interrupt %04x\n", *((uint16_t *) data)); + return 0; +} + +static int sync_intr(unsigned char type) +{ + int r; + unsigned char data[INTR_LENGTH]; + + while (1) { + r = do_sync_intr(data); + if (r < 0) + return r; + if (data[0] == type) + return 0; + } +} + +static int save_to_file(unsigned char *data) +{ + FILE *fd; + char filename[64]; + + snprintf(filename, sizeof(filename), "finger%d.pgm", img_idx++); + fd = fopen(filename, "w"); + if (!fd) + return -1; + + fputs("P5 384 289 255 ", fd); + (void) fwrite(data + 64, 1, 384*289, fd); + fclose(fd); + printf("saved image to %s\n", filename); + return 0; +} + +static int next_state(void) +{ + int r = 0; + printf("old state: %d\n", state); + switch (state) { + case STATE_AWAIT_IRQ_FINGER_REMOVED: + state = STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON; + r = set_mode_async(MODE_AWAIT_FINGER_ON); + break; + case STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON: + state = STATE_AWAIT_IRQ_FINGER_DETECTED; + break; + case STATE_AWAIT_IRQ_FINGER_DETECTED: + state = STATE_AWAIT_MODE_CHANGE_CAPTURE; + r = set_mode_async(MODE_CAPTURE); + break; + case STATE_AWAIT_MODE_CHANGE_CAPTURE: + state = STATE_AWAIT_IMAGE; + break; + case STATE_AWAIT_IMAGE: + state = STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF; + r = set_mode_async(MODE_AWAIT_FINGER_OFF); + break; + case STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF: + state = STATE_AWAIT_IRQ_FINGER_REMOVED; + break; + default: + printf("unrecognised state %d\n", state); + } + if (r < 0) { + fprintf(stderr, "error detected changing state\n"); + return r; + } + + printf("new state: %d\n", state); + return 0; +} + +static void LIBUSB_CALL cb_irq(struct libusb_transfer *transfer) +{ + unsigned char irqtype = transfer->buffer[0]; + + if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { + fprintf(stderr, "irq transfer status %d?\n", transfer->status); + irq_transfer = NULL; + request_exit(2); + return; + } + + printf("IRQ callback %02x\n", irqtype); + switch (state) { + case STATE_AWAIT_IRQ_FINGER_DETECTED: + if (irqtype == 0x01) { + if (next_state() < 0) { + request_exit(2); + return; + } + } else { + printf("finger-on-sensor detected in wrong state!\n"); + } + break; + case STATE_AWAIT_IRQ_FINGER_REMOVED: + if (irqtype == 0x02) { + if (next_state() < 0) { + request_exit(2); + return; + } + } else { + printf("finger-on-sensor detected in wrong state!\n"); + } + break; + } + if (libusb_submit_transfer(irq_transfer) < 0) + request_exit(2); +} + +static void LIBUSB_CALL cb_img(struct libusb_transfer *transfer) +{ + if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { + fprintf(stderr, "img transfer status %d?\n", transfer->status); + img_transfer = NULL; + request_exit(2); + return; + } + + printf("Image callback\n"); + save_to_file(imgbuf); + if (next_state() < 0) { + request_exit(2); + return; + } + if (libusb_submit_transfer(img_transfer) < 0) + request_exit(2); +} + +static int init_capture(void) +{ + int r; + + r = libusb_submit_transfer(irq_transfer); + if (r < 0) + return r; + + r = libusb_submit_transfer(img_transfer); + if (r < 0) { + libusb_cancel_transfer(irq_transfer); + while (irq_transfer) + if (libusb_handle_events(NULL) < 0) + break; + return r; + } + + /* start state machine */ + state = STATE_AWAIT_IRQ_FINGER_REMOVED; + return next_state(); +} + +static int do_init(void) +{ + unsigned char status; + int r; + + r = get_hwstat(&status); + if (r < 0) + return r; + + if (!(status & 0x80)) { + r = set_hwstat(status | 0x80); + if (r < 0) + return r; + r = get_hwstat(&status); + if (r < 0) + return r; + } + + status &= ~0x80; + r = set_hwstat(status); + if (r < 0) + return r; + + r = get_hwstat(&status); + if (r < 0) + return r; + + r = sync_intr(0x56); + if (r < 0) + return r; + + return 0; +} + +static int alloc_transfers(void) +{ + img_transfer = libusb_alloc_transfer(0); + if (!img_transfer) + return -ENOMEM; + + irq_transfer = libusb_alloc_transfer(0); + if (!irq_transfer) + return -ENOMEM; + + libusb_fill_bulk_transfer(img_transfer, devh, EP_DATA, imgbuf, + sizeof(imgbuf), cb_img, NULL, 0); + libusb_fill_interrupt_transfer(irq_transfer, devh, EP_INTR, irqbuf, + sizeof(irqbuf), cb_irq, NULL, 0); + + return 0; +} + +static void sighandler(int signum) +{ + request_exit(1); +} + +int main(void) +{ + struct sigaction sigact; + int r = 1; + + r = libusb_init(NULL); + if (r < 0) { + fprintf(stderr, "failed to initialise libusb\n"); + exit(1); + } + + r = find_dpfp_device(); + if (r < 0) { + fprintf(stderr, "Could not find/open device\n"); + goto out; + } + + r = libusb_claim_interface(devh, 0); + if (r < 0) { + fprintf(stderr, "usb_claim_interface error %d %s\n", r, strerror(-r)); + goto out; + } + printf("claimed interface\n"); + + r = print_f0_data(); + if (r < 0) + goto out_release; + + r = do_init(); + if (r < 0) + goto out_deinit; + + /* async from here onwards */ + + sigact.sa_handler = sighandler; + sigemptyset(&sigact.sa_mask); + sigact.sa_flags = 0; + sigaction(SIGINT, &sigact, NULL); + sigaction(SIGTERM, &sigact, NULL); + sigaction(SIGQUIT, &sigact, NULL); + + r = pthread_create(&poll_thread, NULL, poll_thread_main, NULL); + if (r) + goto out_deinit; + + r = alloc_transfers(); + if (r < 0) { + request_exit(1); + pthread_join(poll_thread, NULL); + goto out_deinit; + } + + r = init_capture(); + if (r < 0) { + request_exit(1); + pthread_join(poll_thread, NULL); + goto out_deinit; + } + + while (!do_exit) { + pthread_mutex_lock(&exit_cond_lock); + pthread_cond_wait(&exit_cond, &exit_cond_lock); + pthread_mutex_unlock(&exit_cond_lock); + } + + printf("shutting down...\n"); + pthread_join(poll_thread, NULL); + + r = libusb_cancel_transfer(irq_transfer); + if (r < 0) { + request_exit(1); + goto out_deinit; + } + + r = libusb_cancel_transfer(img_transfer); + if (r < 0) { + request_exit(1); + goto out_deinit; + } + + while (img_transfer || irq_transfer) + if (libusb_handle_events(NULL) < 0) + break; + + if (do_exit == 1) + r = 0; + else + r = 1; + +out_deinit: + libusb_free_transfer(img_transfer); + libusb_free_transfer(irq_transfer); + set_mode(0); + set_hwstat(0x80); +out_release: + libusb_release_interface(devh, 0); +out: + libusb_close(devh); + libusb_exit(NULL); + return r >= 0 ? r : -r; +} + diff --git a/examples/listdevs.c b/examples/listdevs.c new file mode 100644 index 0000000..6ab8917 --- /dev/null +++ b/examples/listdevs.c @@ -0,0 +1,64 @@ +/* + * libusb example program to list devices on the bus + * Copyright (C) 2007 Daniel Drake <dsd@gentoo.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdio.h> +#include <sys/types.h> + +#include <libusb.h> + +static void print_devs(libusb_device **devs) +{ + libusb_device *dev; + int i = 0; + + while ((dev = devs[i++]) != NULL) { + struct libusb_device_descriptor desc; + int r = libusb_get_device_descriptor(dev, &desc); + if (r < 0) { + fprintf(stderr, "failed to get device descriptor"); + return; + } + + printf("%04x:%04x (bus %d, device %d)\n", + desc.idVendor, desc.idProduct, + libusb_get_bus_number(dev), libusb_get_device_address(dev)); + } +} + +int main(void) +{ + libusb_device **devs; + int r; + ssize_t cnt; + + r = libusb_init(NULL); + if (r < 0) + return r; + + cnt = libusb_get_device_list(NULL, &devs); + if (cnt < 0) + return (int) cnt; + + print_devs(devs); + libusb_free_device_list(devs, 1); + + libusb_exit(NULL); + return 0; +} + diff --git a/libusb-1.0.pc.in b/libusb-1.0.pc.in new file mode 100644 index 0000000..f26babc --- /dev/null +++ b/libusb-1.0.pc.in @@ -0,0 +1,12 @@ +prefix=@prefix@ +exec_prefix=@exec_prefix@ +libdir=@libdir@ +includedir=@includedir@ + +Name: libusb-1.0 +Description: C API for USB device access from Linux, Mac OS X, OpenBSD, NetBSD and Windows userspace +Version: @VERSION@ +Libs: -L${libdir} -lusb-1.0 +Libs.private: @PC_LIBS_PRIVATE@ +Cflags: -I${includedir}/libusb-1.0 + diff --git a/libusb/Makefile.am b/libusb/Makefile.am new file mode 100644 index 0000000..3316ebc --- /dev/null +++ b/libusb/Makefile.am @@ -0,0 +1,49 @@ +lib_LTLIBRARIES = libusb-1.0.la + +LINUX_USBFS_SRC = os/linux_usbfs.c +DARWIN_USB_SRC = os/darwin_usb.c +OPENBSD_USB_SRC = os/openbsd_usb.c +WINDOWS_USB_SRC = os/poll_windows.c os/windows_usb.c libusb-1.0.rc \ + libusb-1.0.def + +EXTRA_DIST = $(LINUX_USBFS_SRC) $(DARWIN_USB_SRC) $(OPENBSD_USB_SRC) \ + $(WINDOWS_USB_SRC) os/threads_posix.c os/threads_windows.c + +if OS_LINUX +OS_SRC = $(LINUX_USBFS_SRC) +endif + +if OS_DARWIN +OS_SRC = $(DARWIN_USB_SRC) +AM_CFLAGS_EXT = -no-cpp-precomp +endif + +if OS_OPENBSD +OS_SRC = $(OPENBSD_USB_SRC) +endif + +if OS_WINDOWS +OS_SRC = $(WINDOWS_USB_SRC) + +.rc.lo: + $(AM_V_GEN)$(LIBTOOL) $(AM_V_lt) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --tag=RC --mode=compile $(RC) $(RCFLAGS) -i $< -o $@ + +libusb-1.0.rc: version.h +endif + +if THREADS_POSIX +THREADS_SRC = os/threads_posix.h os/threads_posix.c +else +THREADS_SRC = os/threads_windows.h os/threads_windows.c +endif + +libusb_1_0_la_CFLAGS = $(VISIBILITY_CFLAGS) $(AM_CFLAGS) $(THREAD_CFLAGS) \ + -DLIBUSB_DESCRIBE=\"`git --git-dir "$(top_srcdir)/.git" describe --tags 2>/dev/null`\" +libusb_1_0_la_LDFLAGS = $(LTLDFLAGS) +libusb_1_0_la_SOURCES = libusbi.h core.c descriptor.c io.c sync.c $(OS_SRC) \ + os/linux_usbfs.h os/darwin_usb.h os/windows_usb.h \ + $(THREADS_SRC) \ + os/poll_posix.h os/poll_windows.h + +hdrdir = $(includedir)/libusb-1.0 +hdr_HEADERS = libusb.h diff --git a/libusb/core.c b/libusb/core.c new file mode 100644 index 0000000..767dcbf --- /dev/null +++ b/libusb/core.c @@ -0,0 +1,1875 @@ +/* + * Core functions for libusb + * Copyright (C) 2007-2008 Daniel Drake <dsd@gentoo.org> + * Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <config.h> + +#include <errno.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#include "libusbi.h" + +#if defined(OS_LINUX) +const struct usbi_os_backend * const usbi_backend = &linux_usbfs_backend; +#elif defined(OS_DARWIN) +const struct usbi_os_backend * const usbi_backend = &darwin_backend; +#elif defined(OS_OPENBSD) +const struct usbi_os_backend * const usbi_backend = &openbsd_backend; +#elif defined(OS_WINDOWS) +const struct usbi_os_backend * const usbi_backend = &windows_backend; +#else +#error "Unsupported OS" +#endif + +const struct libusb_version libusb_version_internal = { + LIBUSB_MAJOR, LIBUSB_MINOR, LIBUSB_MICRO, LIBUSB_NANO, LIBUSB_RC, + LIBUSB_DESCRIBE +}; + +struct libusb_context *usbi_default_context = NULL; +static int default_context_refcnt = 0; +static usbi_mutex_static_t default_context_lock = USBI_MUTEX_INITIALIZER; + +/** + * \mainpage libusb-1.0 API Reference + * + * \section intro Introduction + * + * libusb is an open source library that allows you to communicate with USB + * devices from userspace. For more info, see the + * <a href="http://libusb.sourceforge.net">libusb homepage</a>. + * + * This documentation is aimed at application developers wishing to + * communicate with USB peripherals from their own software. After reviewing + * this documentation, feedback and questions can be sent to the + * <a href="http://sourceforge.net/mail/?group_id=1674">libusb-devel mailing + * list</a>. + * + * This documentation assumes knowledge of how to operate USB devices from + * a software standpoint (descriptors, configurations, interfaces, endpoints, + * control/bulk/interrupt/isochronous transfers, etc). Full information + * can be found in the <a href="http://www.usb.org/developers/docs/">USB 2.0 + * Specification</a> which is available for free download. You can probably + * find less verbose introductions by searching the web. + * + * \section features Library features + * + * - All transfer types supported (control/bulk/interrupt/isochronous) + * - 2 transfer interfaces: + * -# Synchronous (simple) + * -# Asynchronous (more complicated, but more powerful) + * - Thread safe (although the asynchronous interface means that you + * usually won't need to thread) + * - Lightweight with lean API + * - Compatible with libusb-0.1 through the libusb-compat-0.1 translation layer + * + * \section gettingstarted Getting Started + * + * To begin reading the API documentation, start with the Modules page which + * links to the different categories of libusb's functionality. + * + * One decision you will have to make is whether to use the synchronous + * or the asynchronous data transfer interface. The \ref io documentation + * provides some insight into this topic. + * + * Some example programs can be found in the libusb source distribution under + * the "examples" subdirectory. The libusb homepage includes a list of + * real-life project examples which use libusb. + * + * \section errorhandling Error handling + * + * libusb functions typically return 0 on success or a negative error code + * on failure. These negative error codes relate to LIBUSB_ERROR constants + * which are listed on the \ref misc "miscellaneous" documentation page. + * + * \section msglog Debug message logging + * + * libusb does not log any messages by default. Your application is therefore + * free to close stdout/stderr and those descriptors may be reused without + * worry. + * + * The libusb_set_debug() function can be used to enable stdout/stderr logging + * of certain messages. Under standard configuration, libusb doesn't really + * log much at all, so you are advised to use this function to enable all + * error/warning/informational messages. It will help you debug problems with + * your software. + * + * The logged messages are unstructured. There is no one-to-one correspondence + * between messages being logged and success or failure return codes from + * libusb functions. There is no format to the messages, so you should not + * try to capture or parse them. They are not and will not be localized. + * These messages are not suitable for being passed to your application user; + * instead, you should interpret the error codes returned from libusb functions + * and provide appropriate notification to the user. The messages are simply + * there to aid you as a programmer, and if you're confused because you're + * getting a strange error code from a libusb function, enabling message + * logging may give you a suitable explanation. + * + * The LIBUSB_DEBUG environment variable can be used to enable message logging + * at run-time. This environment variable should be set to a number, which is + * interpreted the same as the libusb_set_debug() parameter. When this + * environment variable is set, the message logging verbosity level is fixed + * and libusb_set_debug() effectively does nothing. + * + * libusb can be compiled without any logging functions, useful for embedded + * systems. In this case, libusb_set_debug() and the LIBUSB_DEBUG environment + * variable have no effects. + * + * libusb can also be compiled with verbose debugging messages. When the + * library is compiled in this way, all messages of all verbosities are always + * logged. libusb_set_debug() and the LIBUSB_DEBUG environment variable have + * no effects. + * + * \section remarks Other remarks + * + * libusb does have imperfections. The \ref caveats "caveats" page attempts + * to document these. + */ + +/** + * \page caveats Caveats + * + * \section devresets Device resets + * + * The libusb_reset_device() function allows you to reset a device. If your + * program has to call such a function, it should obviously be aware that + * the reset will cause device state to change (e.g. register values may be + * reset). + * + * The problem is that any other program could reset the device your program + * is working with, at any time. libusb does not offer a mechanism to inform + * you when this has happened, so if someone else resets your device it will + * not be clear to your own program why the device state has changed. + * + * Ultimately, this is a limitation of writing drivers in userspace. + * Separation from the USB stack in the underlying kernel makes it difficult + * for the operating system to deliver such notifications to your program. + * The Linux kernel USB stack allows such reset notifications to be delivered + * to in-kernel USB drivers, but it is not clear how such notifications could + * be delivered to second-class drivers that live in userspace. + * + * \section blockonly Blocking-only functionality + * + * The functionality listed below is only available through synchronous, + * blocking functions. There are no asynchronous/non-blocking alternatives, + * and no clear ways of implementing these. + * + * - Configuration activation (libusb_set_configuration()) + * - Interface/alternate setting activation (libusb_set_interface_alt_setting()) + * - Releasing of interfaces (libusb_release_interface()) + * - Clearing of halt/stall condition (libusb_clear_halt()) + * - Device resets (libusb_reset_device()) + * + * \section nohotplug No hotplugging + * + * libusb-1.0 lacks functionality for providing notifications of when devices + * are added or removed. This functionality is planned to be implemented + * for libusb-1.1. + * + * That said, there is basic disconnection handling for open device handles: + * - If there are ongoing transfers, libusb's handle_events loop will detect + * disconnections and complete ongoing transfers with the + * LIBUSB_TRANSFER_NO_DEVICE status code. + * - Many functions such as libusb_set_configuration() return the special + * LIBUSB_ERROR_NO_DEVICE error code when the device has been disconnected. + * + * \section configsel Configuration selection and handling + * + * When libusb presents a device handle to an application, there is a chance + * that the corresponding device may be in unconfigured state. For devices + * with multiple configurations, there is also a chance that the configuration + * currently selected is not the one that the application wants to use. + * + * The obvious solution is to add a call to libusb_set_configuration() early + * on during your device initialization routines, but there are caveats to + * be aware of: + * -# If the device is already in the desired configuration, calling + * libusb_set_configuration() using the same configuration value will cause + * a lightweight device reset. This may not be desirable behaviour. + * -# libusb will be unable to change configuration if the device is in + * another configuration and other programs or drivers have claimed + * interfaces under that configuration. + * -# In the case where the desired configuration is already active, libusb + * may not even be able to perform a lightweight device reset. For example, + * take my USB keyboard with fingerprint reader: I'm interested in driving + * the fingerprint reader interface through libusb, but the kernel's + * USB-HID driver will almost always have claimed the keyboard interface. + * Because the kernel has claimed an interface, it is not even possible to + * perform the lightweight device reset, so libusb_set_configuration() will + * fail. (Luckily the device in question only has a single configuration.) + * + * One solution to some of the above problems is to consider the currently + * active configuration. If the configuration we want is already active, then + * we don't have to select any configuration: +\code +cfg = libusb_get_configuration(dev); +if (cfg != desired) + libusb_set_configuration(dev, desired); +\endcode + * + * This is probably suitable for most scenarios, but is inherently racy: + * another application or driver may change the selected configuration + * <em>after</em> the libusb_get_configuration() call. + * + * Even in cases where libusb_set_configuration() succeeds, consider that other + * applications or drivers may change configuration after your application + * calls libusb_set_configuration(). + * + * One possible way to lock your device into a specific configuration is as + * follows: + * -# Set the desired configuration (or use the logic above to realise that + * it is already in the desired configuration) + * -# Claim the interface that you wish to use + * -# Check that the currently active configuration is the one that you want + * to use. + * + * The above method works because once an interface is claimed, no application + * or driver is able to select another configuration. + * + * \section earlycomp Early transfer completion + * + * NOTE: This section is currently Linux-centric. I am not sure if any of these + * considerations apply to Darwin or other platforms. + * + * When a transfer completes early (i.e. when less data is received/sent in + * any one packet than the transfer buffer allows for) then libusb is designed + * to terminate the transfer immediately, not transferring or receiving any + * more data unless other transfers have been queued by the user. + * + * On legacy platforms, libusb is unable to do this in all situations. After + * the incomplete packet occurs, "surplus" data may be transferred. Prior to + * libusb v1.0.2, this information was lost (and for device-to-host transfers, + * the corresponding data was discarded). As of libusb v1.0.3, this information + * is kept (the data length of the transfer is updated) and, for device-to-host + * transfers, any surplus data was added to the buffer. Still, this is not + * a nice solution because it loses the information about the end of the short + * packet, and the user probably wanted that surplus data to arrive in the next + * logical transfer. + * + * A previous workaround was to only ever submit transfers of size 16kb or + * less. + * + * As of libusb v1.0.4 and Linux v2.6.32, this is fixed. A technical + * explanation of this issue follows. + * + * When you ask libusb to submit a bulk transfer larger than 16kb in size, + * libusb breaks it up into a number of smaller subtransfers. This is because + * the usbfs kernel interface only accepts transfers of up to 16kb in size. + * The subtransfers are submitted all at once so that the kernel can queue + * them at the hardware level, therefore maximizing bus throughput. + * + * On legacy platforms, this caused problems when transfers completed early. + * Upon this event, the kernel would terminate all further packets in that + * subtransfer (but not any following ones). libusb would note this event and + * immediately cancel any following subtransfers that had been queued, + * but often libusb was not fast enough, and the following subtransfers had + * started before libusb got around to cancelling them. + * + * Thanks to an API extension to usbfs, this is fixed with recent kernel and + * libusb releases. The solution was to allow libusb to communicate to the + * kernel where boundaries occur between logical libusb-level transfers. When + * a short transfer (or other error) occurs, the kernel will cancel all the + * subtransfers until the boundary without allowing those transfers to start. + * + * \section zlp Zero length packets + * + * - libusb is able to send a packet of zero length to an endpoint simply by + * submitting a transfer of zero length. On Linux, this did not work with + * libusb versions prior to 1.0.3 and kernel versions prior to 2.6.31. + * - The \ref libusb_transfer_flags::LIBUSB_TRANSFER_ADD_ZERO_PACKET + * "LIBUSB_TRANSFER_ADD_ZERO_PACKET" flag is currently only supported on Linux. + */ + +/** + * \page contexts Contexts + * + * It is possible that libusb may be used simultaneously from two independent + * libraries linked into the same executable. For example, if your application + * has a plugin-like system which allows the user to dynamically load a range + * of modules into your program, it is feasible that two independently + * developed modules may both use libusb. + * + * libusb is written to allow for these multiple user scenarios. The two + * "instances" of libusb will not interfere: libusb_set_debug() calls + * from one user will not affect the same settings for other users, other + * users can continue using libusb after one of them calls libusb_exit(), etc. + * + * This is made possible through libusb's <em>context</em> concept. When you + * call libusb_init(), you are (optionally) given a context. You can then pass + * this context pointer back into future libusb functions. + * + * In order to keep things simple for more simplistic applications, it is + * legal to pass NULL to all functions requiring a context pointer (as long as + * you're sure no other code will attempt to use libusb from the same process). + * When you pass NULL, the default context will be used. The default context + * is created the first time a process calls libusb_init() when no other + * context is alive. Contexts are destroyed during libusb_exit(). + * + * The default context is reference-counted and can be shared. That means that + * if libusb_init(NULL) is called twice within the same process, the two + * users end up sharing the same context. The deinitialization and freeing of + * the default context will only happen when the last user calls libusb_exit(). + * In other words, the default context is created and initialized when its + * reference count goes from 0 to 1, and is deinitialized and destroyed when + * its reference count goes from 1 to 0. + * + * You may be wondering why only a subset of libusb functions require a + * context pointer in their function definition. Internally, libusb stores + * context pointers in other objects (e.g. libusb_device instances) and hence + * can infer the context from those objects. + */ + +/** + * @defgroup lib Library initialization/deinitialization + * This page details how to initialize and deinitialize libusb. Initialization + * must be performed before using any libusb functionality, and similarly you + * must not call any libusb functions after deinitialization. + */ + +/** + * @defgroup dev Device handling and enumeration + * The functionality documented below is designed to help with the following + * operations: + * - Enumerating the USB devices currently attached to the system + * - Choosing a device to operate from your software + * - Opening and closing the chosen device + * + * \section nutshell In a nutshell... + * + * The description below really makes things sound more complicated than they + * actually are. The following sequence of function calls will be suitable + * for almost all scenarios and does not require you to have such a deep + * understanding of the resource management issues: + * \code +// discover devices +libusb_device **list; +libusb_device *found = NULL; +ssize_t cnt = libusb_get_device_list(NULL, &list); +ssize_t i = 0; +int err = 0; +if (cnt < 0) + error(); + +for (i = 0; i < cnt; i++) { + libusb_device *device = list[i]; + if (is_interesting(device)) { + found = device; + break; + } +} + +if (found) { + libusb_device_handle *handle; + + err = libusb_open(found, &handle); + if (err) + error(); + // etc +} + +libusb_free_device_list(list, 1); +\endcode + * + * The two important points: + * - You asked libusb_free_device_list() to unreference the devices (2nd + * parameter) + * - You opened the device before freeing the list and unreferencing the + * devices + * + * If you ended up with a handle, you can now proceed to perform I/O on the + * device. + * + * \section devshandles Devices and device handles + * libusb has a concept of a USB device, represented by the + * \ref libusb_device opaque type. A device represents a USB device that + * is currently or was previously connected to the system. Using a reference + * to a device, you can determine certain information about the device (e.g. + * you can read the descriptor data). + * + * The libusb_get_device_list() function can be used to obtain a list of + * devices currently connected to the system. This is known as device + * discovery. + * + * Just because you have a reference to a device does not mean it is + * necessarily usable. The device may have been unplugged, you may not have + * permission to operate such device, or another program or driver may be + * using the device. + * + * When you've found a device that you'd like to operate, you must ask + * libusb to open the device using the libusb_open() function. Assuming + * success, libusb then returns you a <em>device handle</em> + * (a \ref libusb_device_handle pointer). All "real" I/O operations then + * operate on the handle rather than the original device pointer. + * + * \section devref Device discovery and reference counting + * + * Device discovery (i.e. calling libusb_get_device_list()) returns a + * freshly-allocated list of devices. The list itself must be freed when + * you are done with it. libusb also needs to know when it is OK to free + * the contents of the list - the devices themselves. + * + * To handle these issues, libusb provides you with two separate items: + * - A function to free the list itself + * - A reference counting system for the devices inside + * + * New devices presented by the libusb_get_device_list() function all have a + * reference count of 1. You can increase and decrease reference count using + * libusb_ref_device() and libusb_unref_device(). A device is destroyed when + * its reference count reaches 0. + * + * With the above information in mind, the process of opening a device can + * be viewed as follows: + * -# Discover devices using libusb_get_device_list(). + * -# Choose the device that you want to operate, and call libusb_open(). + * -# Unref all devices in the discovered device list. + * -# Free the discovered device list. + * + * The order is important - you must not unreference the device before + * attempting to open it, because unreferencing it may destroy the device. + * + * For convenience, the libusb_free_device_list() function includes a + * parameter to optionally unreference all the devices in the list before + * freeing the list itself. This combines steps 3 and 4 above. + * + * As an implementation detail, libusb_open() actually adds a reference to + * the device in question. This is because the device remains available + * through the handle via libusb_get_device(). The reference is deleted during + * libusb_close(). + */ + +/** @defgroup misc Miscellaneous */ + +/* we traverse usbfs without knowing how many devices we are going to find. + * so we create this discovered_devs model which is similar to a linked-list + * which grows when required. it can be freed once discovery has completed, + * eliminating the need for a list node in the libusb_device structure + * itself. */ +#define DISCOVERED_DEVICES_SIZE_STEP 8 + +static struct discovered_devs *discovered_devs_alloc(void) +{ + struct discovered_devs *ret = + malloc(sizeof(*ret) + (sizeof(void *) * DISCOVERED_DEVICES_SIZE_STEP)); + + if (ret) { + ret->len = 0; + ret->capacity = DISCOVERED_DEVICES_SIZE_STEP; + } + return ret; +} + +/* append a device to the discovered devices collection. may realloc itself, + * returning new discdevs. returns NULL on realloc failure. */ +struct discovered_devs *discovered_devs_append( + struct discovered_devs *discdevs, struct libusb_device *dev) +{ + size_t len = discdevs->len; + size_t capacity; + + /* if there is space, just append the device */ + if (len < discdevs->capacity) { + discdevs->devices[len] = libusb_ref_device(dev); + discdevs->len++; + return discdevs; + } + + /* exceeded capacity, need to grow */ + usbi_dbg("need to increase capacity"); + capacity = discdevs->capacity + DISCOVERED_DEVICES_SIZE_STEP; + discdevs = realloc(discdevs, + sizeof(*discdevs) + (sizeof(void *) * capacity)); + if (discdevs) { + discdevs->capacity = capacity; + discdevs->devices[len] = libusb_ref_device(dev); + discdevs->len++; + } + + return discdevs; +} + +static void discovered_devs_free(struct discovered_devs *discdevs) +{ + size_t i; + + for (i = 0; i < discdevs->len; i++) + libusb_unref_device(discdevs->devices[i]); + + free(discdevs); +} + +/* Allocate a new device with a specific session ID. The returned device has + * a reference count of 1. */ +struct libusb_device *usbi_alloc_device(struct libusb_context *ctx, + unsigned long session_id) +{ + size_t priv_size = usbi_backend->device_priv_size; + struct libusb_device *dev = calloc(1, sizeof(*dev) + priv_size); + int r; + + if (!dev) + return NULL; + + r = usbi_mutex_init(&dev->lock, NULL); + if (r) { + free(dev); + return NULL; + } + + dev->ctx = ctx; + dev->refcnt = 1; + dev->session_data = session_id; + dev->speed = LIBUSB_SPEED_UNKNOWN; + memset(&dev->os_priv, 0, priv_size); + + usbi_mutex_lock(&ctx->usb_devs_lock); + list_add(&dev->list, &ctx->usb_devs); + usbi_mutex_unlock(&ctx->usb_devs_lock); + return dev; +} + +/* Perform some final sanity checks on a newly discovered device. If this + * function fails (negative return code), the device should not be added + * to the discovered device list. */ +int usbi_sanitize_device(struct libusb_device *dev) +{ + int r; + unsigned char raw_desc[DEVICE_DESC_LENGTH]; + uint8_t num_configurations; + int host_endian; + + r = usbi_backend->get_device_descriptor(dev, raw_desc, &host_endian); + if (r < 0) + return r; + + num_configurations = raw_desc[DEVICE_DESC_LENGTH - 1]; + if (num_configurations > USB_MAXCONFIG) { + usbi_err(DEVICE_CTX(dev), "too many configurations"); + return LIBUSB_ERROR_IO; + } else if (0 == num_configurations) + usbi_dbg("zero configurations, maybe an unauthorized device"); + + dev->num_configurations = num_configurations; + return 0; +} + +/* Examine libusb's internal list of known devices, looking for one with + * a specific session ID. Returns the matching device if it was found, and + * NULL otherwise. */ +struct libusb_device *usbi_get_device_by_session_id(struct libusb_context *ctx, + unsigned long session_id) +{ + struct libusb_device *dev; + struct libusb_device *ret = NULL; + + usbi_mutex_lock(&ctx->usb_devs_lock); + list_for_each_entry(dev, &ctx->usb_devs, list, struct libusb_device) + if (dev->session_data == session_id) { + ret = dev; + break; + } + usbi_mutex_unlock(&ctx->usb_devs_lock); + + return ret; +} + +/** @ingroup dev + * Returns a list of USB devices currently attached to the system. This is + * your entry point into finding a USB device to operate. + * + * You are expected to unreference all the devices when you are done with + * them, and then free the list with libusb_free_device_list(). Note that + * libusb_free_device_list() can unref all the devices for you. Be careful + * not to unreference a device you are about to open until after you have + * opened it. + * + * This return value of this function indicates the number of devices in + * the resultant list. The list is actually one element larger, as it is + * NULL-terminated. + * + * \param ctx the context to operate on, or NULL for the default context + * \param list output location for a list of devices. Must be later freed with + * libusb_free_device_list(). + * \returns The number of devices in the outputted list, or any + * \ref libusb_error according to errors encountered by the backend. + */ +ssize_t API_EXPORTED libusb_get_device_list(libusb_context *ctx, + libusb_device ***list) +{ + struct discovered_devs *discdevs = discovered_devs_alloc(); + struct libusb_device **ret; + int r = 0; + ssize_t i, len; + USBI_GET_CONTEXT(ctx); + usbi_dbg(""); + + if (!discdevs) + return LIBUSB_ERROR_NO_MEM; + + r = usbi_backend->get_device_list(ctx, &discdevs); + if (r < 0) { + len = r; + goto out; + } + + /* convert discovered_devs into a list */ + len = discdevs->len; + ret = malloc(sizeof(void *) * (len + 1)); + if (!ret) { + len = LIBUSB_ERROR_NO_MEM; + goto out; + } + + ret[len] = NULL; + for (i = 0; i < len; i++) { + struct libusb_device *dev = discdevs->devices[i]; + ret[i] = libusb_ref_device(dev); + } + *list = ret; + +out: + discovered_devs_free(discdevs); + return len; +} + +/** \ingroup dev + * Frees a list of devices previously discovered using + * libusb_get_device_list(). If the unref_devices parameter is set, the + * reference count of each device in the list is decremented by 1. + * \param list the list to free + * \param unref_devices whether to unref the devices in the list + */ +void API_EXPORTED libusb_free_device_list(libusb_device **list, + int unref_devices) +{ + if (!list) + return; + + if (unref_devices) { + int i = 0; + struct libusb_device *dev; + + while ((dev = list[i++]) != NULL) + libusb_unref_device(dev); + } + free(list); +} + +/** \ingroup dev + * Get the number of the bus that a device is connected to. + * \param dev a device + * \returns the bus number + */ +uint8_t API_EXPORTED libusb_get_bus_number(libusb_device *dev) +{ + return dev->bus_number; +} + +/** \ingroup dev + * Get the address of the device on the bus it is connected to. + * \param dev a device + * \returns the device address + */ +uint8_t API_EXPORTED libusb_get_device_address(libusb_device *dev) +{ + return dev->device_address; +} + +/** \ingroup dev + * Get the negotiated connection speed for a device. + * \param dev a device + * \returns a \ref libusb_speed code, where LIBUSB_SPEED_UNKNOWN means that + * the OS doesn't know or doesn't support returning the negotiated speed. + */ +int API_EXPORTED libusb_get_device_speed(libusb_device *dev) +{ + return dev->speed; +} + +static const struct libusb_endpoint_descriptor *find_endpoint( + struct libusb_config_descriptor *config, unsigned char endpoint) +{ + int iface_idx; + for (iface_idx = 0; iface_idx < config->bNumInterfaces; iface_idx++) { + const struct libusb_interface *iface = &config->interface[iface_idx]; + int altsetting_idx; + + for (altsetting_idx = 0; altsetting_idx < iface->num_altsetting; + altsetting_idx++) { + const struct libusb_interface_descriptor *altsetting + = &iface->altsetting[altsetting_idx]; + int ep_idx; + + for (ep_idx = 0; ep_idx < altsetting->bNumEndpoints; ep_idx++) { + const struct libusb_endpoint_descriptor *ep = + &altsetting->endpoint[ep_idx]; + if (ep->bEndpointAddress == endpoint) + return ep; + } + } + } + return NULL; +} + +/** \ingroup dev + * Convenience function to retrieve the wMaxPacketSize value for a particular + * endpoint in the active device configuration. + * + * This function was originally intended to be of assistance when setting up + * isochronous transfers, but a design mistake resulted in this function + * instead. It simply returns the wMaxPacketSize value without considering + * its contents. If you're dealing with isochronous transfers, you probably + * want libusb_get_max_iso_packet_size() instead. + * + * \param dev a device + * \param endpoint address of the endpoint in question + * \returns the wMaxPacketSize value + * \returns LIBUSB_ERROR_NOT_FOUND if the endpoint does not exist + * \returns LIBUSB_ERROR_OTHER on other failure + */ +int API_EXPORTED libusb_get_max_packet_size(libusb_device *dev, + unsigned char endpoint) +{ + struct libusb_config_descriptor *config; + const struct libusb_endpoint_descriptor *ep; + int r; + + r = libusb_get_active_config_descriptor(dev, &config); + if (r < 0) { + usbi_err(DEVICE_CTX(dev), + "could not retrieve active config descriptor"); + return LIBUSB_ERROR_OTHER; + } + + ep = find_endpoint(config, endpoint); + if (!ep) + return LIBUSB_ERROR_NOT_FOUND; + + r = ep->wMaxPacketSize; + libusb_free_config_descriptor(config); + return r; +} + +/** \ingroup dev + * Calculate the maximum packet size which a specific endpoint is capable is + * sending or receiving in the duration of 1 microframe + * + * Only the active configution is examined. The calculation is based on the + * wMaxPacketSize field in the endpoint descriptor as described in section + * 9.6.6 in the USB 2.0 specifications. + * + * If acting on an isochronous or interrupt endpoint, this function will + * multiply the value found in bits 0:10 by the number of transactions per + * microframe (determined by bits 11:12). Otherwise, this function just + * returns the numeric value found in bits 0:10. + * + * This function is useful for setting up isochronous transfers, for example + * you might pass the return value from this function to + * libusb_set_iso_packet_lengths() in order to set the length field of every + * isochronous packet in a transfer. + * + * Since v1.0.3. + * + * \param dev a device + * \param endpoint address of the endpoint in question + * \returns the maximum packet size which can be sent/received on this endpoint + * \returns LIBUSB_ERROR_NOT_FOUND if the endpoint does not exist + * \returns LIBUSB_ERROR_OTHER on other failure + */ +int API_EXPORTED libusb_get_max_iso_packet_size(libusb_device *dev, + unsigned char endpoint) +{ + struct libusb_config_descriptor *config; + const struct libusb_endpoint_descriptor *ep; + enum libusb_transfer_type ep_type; + uint16_t val; + int r; + + r = libusb_get_active_config_descriptor(dev, &config); + if (r < 0) { + usbi_err(DEVICE_CTX(dev), + "could not retrieve active config descriptor"); + return LIBUSB_ERROR_OTHER; + } + + ep = find_endpoint(config, endpoint); + if (!ep) + return LIBUSB_ERROR_NOT_FOUND; + + val = ep->wMaxPacketSize; + ep_type = ep->bmAttributes & 0x3; + libusb_free_config_descriptor(config); + + r = val & 0x07ff; + if (ep_type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS + || ep_type == LIBUSB_TRANSFER_TYPE_INTERRUPT) + r *= (1 + ((val >> 11) & 3)); + return r; +} + +/** \ingroup dev + * Increment the reference count of a device. + * \param dev the device to reference + * \returns the same device + */ +DEFAULT_VISIBILITY +libusb_device * LIBUSB_CALL libusb_ref_device(libusb_device *dev) +{ + usbi_mutex_lock(&dev->lock); + dev->refcnt++; + usbi_mutex_unlock(&dev->lock); + return dev; +} + +/** \ingroup dev + * Decrement the reference count of a device. If the decrement operation + * causes the reference count to reach zero, the device shall be destroyed. + * \param dev the device to unreference + */ +void API_EXPORTED libusb_unref_device(libusb_device *dev) +{ + int refcnt; + + if (!dev) + return; + + usbi_mutex_lock(&dev->lock); + refcnt = --dev->refcnt; + usbi_mutex_unlock(&dev->lock); + + if (refcnt == 0) { + usbi_dbg("destroy device %d.%d", dev->bus_number, dev->device_address); + + if (usbi_backend->destroy_device) + usbi_backend->destroy_device(dev); + + usbi_mutex_lock(&dev->ctx->usb_devs_lock); + list_del(&dev->list); + usbi_mutex_unlock(&dev->ctx->usb_devs_lock); + + usbi_mutex_destroy(&dev->lock); + free(dev); + } +} + +/* + * Interrupt the iteration of the event handling thread, so that it picks + * up the new fd. + */ +void usbi_fd_notification(struct libusb_context *ctx) +{ + unsigned char dummy = 1; + ssize_t r; + + if (ctx == NULL) + return; + + /* record that we are messing with poll fds */ + usbi_mutex_lock(&ctx->pollfd_modify_lock); + ctx->pollfd_modify++; + usbi_mutex_unlock(&ctx->pollfd_modify_lock); + + /* write some data on control pipe to interrupt event handlers */ + r = usbi_write(ctx->ctrl_pipe[1], &dummy, sizeof(dummy)); + if (r <= 0) { + usbi_warn(ctx, "internal signalling write failed"); + usbi_mutex_lock(&ctx->pollfd_modify_lock); + ctx->pollfd_modify--; + usbi_mutex_unlock(&ctx->pollfd_modify_lock); + return; + } + + /* take event handling lock */ + libusb_lock_events(ctx); + + /* read the dummy data */ + r = usbi_read(ctx->ctrl_pipe[0], &dummy, sizeof(dummy)); + if (r <= 0) + usbi_warn(ctx, "internal signalling read failed"); + + /* we're done with modifying poll fds */ + usbi_mutex_lock(&ctx->pollfd_modify_lock); + ctx->pollfd_modify--; + usbi_mutex_unlock(&ctx->pollfd_modify_lock); + + /* Release event handling lock and wake up event waiters */ + libusb_unlock_events(ctx); +} + +/** \ingroup dev + * Open a device and obtain a device handle. A handle allows you to perform + * I/O on the device in question. + * + * Internally, this function adds a reference to the device and makes it + * available to you through libusb_get_device(). This reference is removed + * during libusb_close(). + * + * This is a non-blocking function; no requests are sent over the bus. + * + * \param dev the device to open + * \param handle output location for the returned device handle pointer. Only + * populated when the return code is 0. + * \returns 0 on success + * \returns LIBUSB_ERROR_NO_MEM on memory allocation failure + * \returns LIBUSB_ERROR_ACCESS if the user has insufficient permissions + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns another LIBUSB_ERROR code on other failure + */ +int API_EXPORTED libusb_open(libusb_device *dev, + libusb_device_handle **handle) +{ + struct libusb_context *ctx = DEVICE_CTX(dev); + struct libusb_device_handle *_handle; + size_t priv_size = usbi_backend->device_handle_priv_size; + int r; + usbi_dbg("open %d.%d", dev->bus_number, dev->device_address); + + _handle = malloc(sizeof(*_handle) + priv_size); + if (!_handle) + return LIBUSB_ERROR_NO_MEM; + + r = usbi_mutex_init(&_handle->lock, NULL); + if (r) { + free(_handle); + return LIBUSB_ERROR_OTHER; + } + + _handle->dev = libusb_ref_device(dev); + _handle->claimed_interfaces = 0; + memset(&_handle->os_priv, 0, priv_size); + + r = usbi_backend->open(_handle); + if (r < 0) { + usbi_dbg("open %d.%d returns %d", dev->bus_number, dev->device_address, r); + libusb_unref_device(dev); + usbi_mutex_destroy(&_handle->lock); + free(_handle); + return r; + } + + usbi_mutex_lock(&ctx->open_devs_lock); + list_add(&_handle->list, &ctx->open_devs); + usbi_mutex_unlock(&ctx->open_devs_lock); + *handle = _handle; + + /* At this point, we want to interrupt any existing event handlers so + * that they realise the addition of the new device's poll fd. One + * example when this is desirable is if the user is running a separate + * dedicated libusb events handling thread, which is running with a long + * or infinite timeout. We want to interrupt that iteration of the loop, + * so that it picks up the new fd, and then continues. */ + usbi_fd_notification(ctx); + + return 0; +} + +/** \ingroup dev + * Convenience function for finding a device with a particular + * <tt>idVendor</tt>/<tt>idProduct</tt> combination. This function is intended + * for those scenarios where you are using libusb to knock up a quick test + * application - it allows you to avoid calling libusb_get_device_list() and + * worrying about traversing/freeing the list. + * + * This function has limitations and is hence not intended for use in real + * applications: if multiple devices have the same IDs it will only + * give you the first one, etc. + * + * \param ctx the context to operate on, or NULL for the default context + * \param vendor_id the idVendor value to search for + * \param product_id the idProduct value to search for + * \returns a handle for the first found device, or NULL on error or if the + * device could not be found. */ +DEFAULT_VISIBILITY +libusb_device_handle * LIBUSB_CALL libusb_open_device_with_vid_pid( + libusb_context *ctx, uint16_t vendor_id, uint16_t product_id) +{ + struct libusb_device **devs; + struct libusb_device *found = NULL; + struct libusb_device *dev; + struct libusb_device_handle *handle = NULL; + size_t i = 0; + int r; + + if (libusb_get_device_list(ctx, &devs) < 0) + return NULL; + + while ((dev = devs[i++]) != NULL) { + struct libusb_device_descriptor desc; + r = libusb_get_device_descriptor(dev, &desc); + if (r < 0) + goto out; + if (desc.idVendor == vendor_id && desc.idProduct == product_id) { + found = dev; + break; + } + } + + if (found) { + r = libusb_open(found, &handle); + if (r < 0) + handle = NULL; + } + +out: + libusb_free_device_list(devs, 1); + return handle; +} + +static void do_close(struct libusb_context *ctx, + struct libusb_device_handle *dev_handle) +{ + struct usbi_transfer *itransfer; + struct usbi_transfer *tmp; + + libusb_lock_events(ctx); + + /* remove any transfers in flight that are for this device */ + usbi_mutex_lock(&ctx->flying_transfers_lock); + + /* safe iteration because transfers may be being deleted */ + list_for_each_entry_safe(itransfer, tmp, &ctx->flying_transfers, list, struct usbi_transfer) { + struct libusb_transfer *transfer = + USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + + if (transfer->dev_handle != dev_handle) + continue; + + if (!(itransfer->flags & USBI_TRANSFER_DEVICE_DISAPPEARED)) { + usbi_err(ctx, "Device handle closed while transfer was still being processed, but the device is still connected as far as we know"); + + if (itransfer->flags & USBI_TRANSFER_CANCELLING) + usbi_warn(ctx, "A cancellation for an in-flight transfer hasn't completed but closing the device handle"); + else + usbi_err(ctx, "A cancellation hasn't even been scheduled on the transfer for which the device is closing"); + } + + /* remove from the list of in-flight transfers and make sure + * we don't accidentally use the device handle in the future + * (or that such accesses will be easily caught and identified as a crash) + */ + usbi_mutex_lock(&itransfer->lock); + list_del(&itransfer->list); + transfer->dev_handle = NULL; + usbi_mutex_unlock(&itransfer->lock); + + /* it is up to the user to free up the actual transfer struct. this is + * just making sure that we don't attempt to process the transfer after + * the device handle is invalid + */ + usbi_dbg("Removed transfer %p from the in-flight list because device handle %p closed", + transfer, dev_handle); + } + usbi_mutex_unlock(&ctx->flying_transfers_lock); + + libusb_unlock_events(ctx); + + usbi_mutex_lock(&ctx->open_devs_lock); + list_del(&dev_handle->list); + usbi_mutex_unlock(&ctx->open_devs_lock); + + usbi_backend->close(dev_handle); + libusb_unref_device(dev_handle->dev); + usbi_mutex_destroy(&dev_handle->lock); + free(dev_handle); +} + +/** \ingroup dev + * Close a device handle. Should be called on all open handles before your + * application exits. + * + * Internally, this function destroys the reference that was added by + * libusb_open() on the given device. + * + * This is a non-blocking function; no requests are sent over the bus. + * + * \param dev_handle the handle to close + */ +void API_EXPORTED libusb_close(libusb_device_handle *dev_handle) +{ + struct libusb_context *ctx; + unsigned char dummy = 1; + ssize_t r; + + if (!dev_handle) + return; + usbi_dbg(""); + + ctx = HANDLE_CTX(dev_handle); + + /* Similarly to libusb_open(), we want to interrupt all event handlers + * at this point. More importantly, we want to perform the actual close of + * the device while holding the event handling lock (preventing any other + * thread from doing event handling) because we will be removing a file + * descriptor from the polling loop. */ + + /* record that we are messing with poll fds */ + usbi_mutex_lock(&ctx->pollfd_modify_lock); + ctx->pollfd_modify++; + usbi_mutex_unlock(&ctx->pollfd_modify_lock); + + /* write some data on control pipe to interrupt event handlers */ + r = usbi_write(ctx->ctrl_pipe[1], &dummy, sizeof(dummy)); + if (r <= 0) { + usbi_warn(ctx, "internal signalling write failed, closing anyway"); + do_close(ctx, dev_handle); + usbi_mutex_lock(&ctx->pollfd_modify_lock); + ctx->pollfd_modify--; + usbi_mutex_unlock(&ctx->pollfd_modify_lock); + return; + } + + /* take event handling lock */ + libusb_lock_events(ctx); + + /* read the dummy data */ + r = usbi_read(ctx->ctrl_pipe[0], &dummy, sizeof(dummy)); + if (r <= 0) + usbi_warn(ctx, "internal signalling read failed, closing anyway"); + + /* Close the device */ + do_close(ctx, dev_handle); + + /* we're done with modifying poll fds */ + usbi_mutex_lock(&ctx->pollfd_modify_lock); + ctx->pollfd_modify--; + usbi_mutex_unlock(&ctx->pollfd_modify_lock); + + /* Release event handling lock and wake up event waiters */ + libusb_unlock_events(ctx); +} + +/** \ingroup dev + * Get the underlying device for a handle. This function does not modify + * the reference count of the returned device, so do not feel compelled to + * unreference it when you are done. + * \param dev_handle a device handle + * \returns the underlying device + */ +DEFAULT_VISIBILITY +libusb_device * LIBUSB_CALL libusb_get_device(libusb_device_handle *dev_handle) +{ + return dev_handle->dev; +} + +/** \ingroup dev + * Determine the bConfigurationValue of the currently active configuration. + * + * You could formulate your own control request to obtain this information, + * but this function has the advantage that it may be able to retrieve the + * information from operating system caches (no I/O involved). + * + * If the OS does not cache this information, then this function will block + * while a control transfer is submitted to retrieve the information. + * + * This function will return a value of 0 in the <tt>config</tt> output + * parameter if the device is in unconfigured state. + * + * \param dev a device handle + * \param config output location for the bConfigurationValue of the active + * configuration (only valid for return code 0) + * \returns 0 on success + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns another LIBUSB_ERROR code on other failure + */ +int API_EXPORTED libusb_get_configuration(libusb_device_handle *dev, + int *config) +{ + int r = LIBUSB_ERROR_NOT_SUPPORTED; + + usbi_dbg(""); + if (usbi_backend->get_configuration) + r = usbi_backend->get_configuration(dev, config); + + if (r == LIBUSB_ERROR_NOT_SUPPORTED) { + uint8_t tmp = 0; + usbi_dbg("falling back to control message"); + r = libusb_control_transfer(dev, LIBUSB_ENDPOINT_IN, + LIBUSB_REQUEST_GET_CONFIGURATION, 0, 0, &tmp, 1, 1000); + if (r == 0) { + usbi_err(HANDLE_CTX(dev), "zero bytes returned in ctrl transfer?"); + r = LIBUSB_ERROR_IO; + } else if (r == 1) { + r = 0; + *config = tmp; + } else { + usbi_dbg("control failed, error %d", r); + } + } + + if (r == 0) + usbi_dbg("active config %d", *config); + + return r; +} + +/** \ingroup dev + * Set the active configuration for a device. + * + * The operating system may or may not have already set an active + * configuration on the device. It is up to your application to ensure the + * correct configuration is selected before you attempt to claim interfaces + * and perform other operations. + * + * If you call this function on a device already configured with the selected + * configuration, then this function will act as a lightweight device reset: + * it will issue a SET_CONFIGURATION request using the current configuration, + * causing most USB-related device state to be reset (altsetting reset to zero, + * endpoint halts cleared, toggles reset). + * + * You cannot change/reset configuration if your application has claimed + * interfaces - you should free them with libusb_release_interface() first. + * You cannot change/reset configuration if other applications or drivers have + * claimed interfaces. + * + * A configuration value of -1 will put the device in unconfigured state. + * The USB specifications state that a configuration value of 0 does this, + * however buggy devices exist which actually have a configuration 0. + * + * You should always use this function rather than formulating your own + * SET_CONFIGURATION control request. This is because the underlying operating + * system needs to know when such changes happen. + * + * This is a blocking function. + * + * \param dev a device handle + * \param configuration the bConfigurationValue of the configuration you + * wish to activate, or -1 if you wish to put the device in unconfigured state + * \returns 0 on success + * \returns LIBUSB_ERROR_NOT_FOUND if the requested configuration does not exist + * \returns LIBUSB_ERROR_BUSY if interfaces are currently claimed + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns another LIBUSB_ERROR code on other failure + */ +int API_EXPORTED libusb_set_configuration(libusb_device_handle *dev, + int configuration) +{ + usbi_dbg("configuration %d", configuration); + return usbi_backend->set_configuration(dev, configuration); +} + +/** \ingroup dev + * Claim an interface on a given device handle. You must claim the interface + * you wish to use before you can perform I/O on any of its endpoints. + * + * It is legal to attempt to claim an already-claimed interface, in which + * case libusb just returns 0 without doing anything. + * + * Claiming of interfaces is a purely logical operation; it does not cause + * any requests to be sent over the bus. Interface claiming is used to + * instruct the underlying operating system that your application wishes + * to take ownership of the interface. + * + * This is a non-blocking function. + * + * \param dev a device handle + * \param interface_number the <tt>bInterfaceNumber</tt> of the interface you + * wish to claim + * \returns 0 on success + * \returns LIBUSB_ERROR_NOT_FOUND if the requested interface does not exist + * \returns LIBUSB_ERROR_BUSY if another program or driver has claimed the + * interface + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns a LIBUSB_ERROR code on other failure + */ +int API_EXPORTED libusb_claim_interface(libusb_device_handle *dev, + int interface_number) +{ + int r = 0; + + usbi_dbg("interface %d", interface_number); + if (interface_number >= USB_MAXINTERFACES) + return LIBUSB_ERROR_INVALID_PARAM; + + usbi_mutex_lock(&dev->lock); + if (dev->claimed_interfaces & (1 << interface_number)) + goto out; + + r = usbi_backend->claim_interface(dev, interface_number); + if (r == 0) + dev->claimed_interfaces |= 1 << interface_number; + +out: + usbi_mutex_unlock(&dev->lock); + return r; +} + +/** \ingroup dev + * Release an interface previously claimed with libusb_claim_interface(). You + * should release all claimed interfaces before closing a device handle. + * + * This is a blocking function. A SET_INTERFACE control request will be sent + * to the device, resetting interface state to the first alternate setting. + * + * \param dev a device handle + * \param interface_number the <tt>bInterfaceNumber</tt> of the + * previously-claimed interface + * \returns 0 on success + * \returns LIBUSB_ERROR_NOT_FOUND if the interface was not claimed + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns another LIBUSB_ERROR code on other failure + */ +int API_EXPORTED libusb_release_interface(libusb_device_handle *dev, + int interface_number) +{ + int r; + + usbi_dbg("interface %d", interface_number); + if (interface_number >= USB_MAXINTERFACES) + return LIBUSB_ERROR_INVALID_PARAM; + + usbi_mutex_lock(&dev->lock); + if (!(dev->claimed_interfaces & (1 << interface_number))) { + r = LIBUSB_ERROR_NOT_FOUND; + goto out; + } + + r = usbi_backend->release_interface(dev, interface_number); + if (r == 0) + dev->claimed_interfaces &= ~(1 << interface_number); + +out: + usbi_mutex_unlock(&dev->lock); + return r; +} + +/** \ingroup dev + * Activate an alternate setting for an interface. The interface must have + * been previously claimed with libusb_claim_interface(). + * + * You should always use this function rather than formulating your own + * SET_INTERFACE control request. This is because the underlying operating + * system needs to know when such changes happen. + * + * This is a blocking function. + * + * \param dev a device handle + * \param interface_number the <tt>bInterfaceNumber</tt> of the + * previously-claimed interface + * \param alternate_setting the <tt>bAlternateSetting</tt> of the alternate + * setting to activate + * \returns 0 on success + * \returns LIBUSB_ERROR_NOT_FOUND if the interface was not claimed, or the + * requested alternate setting does not exist + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns another LIBUSB_ERROR code on other failure + */ +int API_EXPORTED libusb_set_interface_alt_setting(libusb_device_handle *dev, + int interface_number, int alternate_setting) +{ + usbi_dbg("interface %d altsetting %d", + interface_number, alternate_setting); + if (interface_number >= USB_MAXINTERFACES) + return LIBUSB_ERROR_INVALID_PARAM; + + usbi_mutex_lock(&dev->lock); + if (!(dev->claimed_interfaces & (1 << interface_number))) { + usbi_mutex_unlock(&dev->lock); + return LIBUSB_ERROR_NOT_FOUND; + } + usbi_mutex_unlock(&dev->lock); + + return usbi_backend->set_interface_altsetting(dev, interface_number, + alternate_setting); +} + +/** \ingroup dev + * Clear the halt/stall condition for an endpoint. Endpoints with halt status + * are unable to receive or transmit data until the halt condition is stalled. + * + * You should cancel all pending transfers before attempting to clear the halt + * condition. + * + * This is a blocking function. + * + * \param dev a device handle + * \param endpoint the endpoint to clear halt status + * \returns 0 on success + * \returns LIBUSB_ERROR_NOT_FOUND if the endpoint does not exist + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns another LIBUSB_ERROR code on other failure + */ +int API_EXPORTED libusb_clear_halt(libusb_device_handle *dev, + unsigned char endpoint) +{ + usbi_dbg("endpoint %x", endpoint); + return usbi_backend->clear_halt(dev, endpoint); +} + +/** \ingroup dev + * Perform a USB port reset to reinitialize a device. The system will attempt + * to restore the previous configuration and alternate settings after the + * reset has completed. + * + * If the reset fails, the descriptors change, or the previous state cannot be + * restored, the device will appear to be disconnected and reconnected. This + * means that the device handle is no longer valid (you should close it) and + * rediscover the device. A return code of LIBUSB_ERROR_NOT_FOUND indicates + * when this is the case. + * + * This is a blocking function which usually incurs a noticeable delay. + * + * \param dev a handle of the device to reset + * \returns 0 on success + * \returns LIBUSB_ERROR_NOT_FOUND if re-enumeration is required, or if the + * device has been disconnected + * \returns another LIBUSB_ERROR code on other failure + */ +int API_EXPORTED libusb_reset_device(libusb_device_handle *dev) +{ + usbi_dbg(""); + return usbi_backend->reset_device(dev); +} + +/** \ingroup dev + * Determine if a kernel driver is active on an interface. If a kernel driver + * is active, you cannot claim the interface, and libusb will be unable to + * perform I/O. + * + * This functionality is not available on Windows. + * + * \param dev a device handle + * \param interface_number the interface to check + * \returns 0 if no kernel driver is active + * \returns 1 if a kernel driver is active + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns LIBUSB_ERROR_NOT_SUPPORTED on platforms where the functionality + * is not available + * \returns another LIBUSB_ERROR code on other failure + * \see libusb_detach_kernel_driver() + */ +int API_EXPORTED libusb_kernel_driver_active(libusb_device_handle *dev, + int interface_number) +{ + usbi_dbg("interface %d", interface_number); + if (usbi_backend->kernel_driver_active) + return usbi_backend->kernel_driver_active(dev, interface_number); + else + return LIBUSB_ERROR_NOT_SUPPORTED; +} + +/** \ingroup dev + * Detach a kernel driver from an interface. If successful, you will then be + * able to claim the interface and perform I/O. + * + * This functionality is not available on Darwin or Windows. + * + * \param dev a device handle + * \param interface_number the interface to detach the driver from + * \returns 0 on success + * \returns LIBUSB_ERROR_NOT_FOUND if no kernel driver was active + * \returns LIBUSB_ERROR_INVALID_PARAM if the interface does not exist + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns LIBUSB_ERROR_NOT_SUPPORTED on platforms where the functionality + * is not available + * \returns another LIBUSB_ERROR code on other failure + * \see libusb_kernel_driver_active() + */ +int API_EXPORTED libusb_detach_kernel_driver(libusb_device_handle *dev, + int interface_number) +{ + usbi_dbg("interface %d", interface_number); + if (usbi_backend->detach_kernel_driver) + return usbi_backend->detach_kernel_driver(dev, interface_number); + else + return LIBUSB_ERROR_NOT_SUPPORTED; +} + +/** \ingroup dev + * Re-attach an interface's kernel driver, which was previously detached + * using libusb_detach_kernel_driver(). This call is only effective on + * Linux and returns LIBUSB_ERROR_NOT_SUPPORTED on all other platforms. + * + * This functionality is not available on Darwin or Windows. + * + * \param dev a device handle + * \param interface_number the interface to attach the driver from + * \returns 0 on success + * \returns LIBUSB_ERROR_NOT_FOUND if no kernel driver was active + * \returns LIBUSB_ERROR_INVALID_PARAM if the interface does not exist + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns LIBUSB_ERROR_NOT_SUPPORTED on platforms where the functionality + * is not available + * \returns LIBUSB_ERROR_BUSY if the driver cannot be attached because the + * interface is claimed by a program or driver + * \returns another LIBUSB_ERROR code on other failure + * \see libusb_kernel_driver_active() + */ +int API_EXPORTED libusb_attach_kernel_driver(libusb_device_handle *dev, + int interface_number) +{ + usbi_dbg("interface %d", interface_number); + if (usbi_backend->attach_kernel_driver) + return usbi_backend->attach_kernel_driver(dev, interface_number); + else + return LIBUSB_ERROR_NOT_SUPPORTED; +} + +/** \ingroup lib + * Set message verbosity. + * - Level 0: no messages ever printed by the library (default) + * - Level 1: error messages are printed to stderr + * - Level 2: warning and error messages are printed to stderr + * - Level 3: informational messages are printed to stdout, warning and error + * messages are printed to stderr + * + * The default level is 0, which means no messages are ever printed. If you + * choose to increase the message verbosity level, ensure that your + * application does not close the stdout/stderr file descriptors. + * + * You are advised to set level 3. libusb is conservative with its message + * logging and most of the time, will only log messages that explain error + * conditions and other oddities. This will help you debug your software. + * + * If the LIBUSB_DEBUG environment variable was set when libusb was + * initialized, this function does nothing: the message verbosity is fixed + * to the value in the environment variable. + * + * If libusb was compiled without any message logging, this function does + * nothing: you'll never get any messages. + * + * If libusb was compiled with verbose debug message logging, this function + * does nothing: you'll always get messages from all levels. + * + * \param ctx the context to operate on, or NULL for the default context + * \param level debug level to set + */ +void API_EXPORTED libusb_set_debug(libusb_context *ctx, int level) +{ + USBI_GET_CONTEXT(ctx); + if (!ctx->debug_fixed) + ctx->debug = level; +} + +/** \ingroup lib + * Initialize libusb. This function must be called before calling any other + * libusb function. + * + * If you do not provide an output location for a context pointer, a default + * context will be created. If there was already a default context, it will + * be reused (and nothing will be initialized/reinitialized). + * + * \param context Optional output location for context pointer. + * Only valid on return code 0. + * \returns 0 on success, or a LIBUSB_ERROR code on failure + * \see contexts + */ +int API_EXPORTED libusb_init(libusb_context **context) +{ + char *dbg = getenv("LIBUSB_DEBUG"); + struct libusb_context *ctx; + int r = 0; + + usbi_mutex_static_lock(&default_context_lock); + if (!context && usbi_default_context) { + usbi_dbg("reusing default context"); + default_context_refcnt++; + usbi_mutex_static_unlock(&default_context_lock); + return 0; + } + + ctx = malloc(sizeof(*ctx)); + if (!ctx) { + r = LIBUSB_ERROR_NO_MEM; + goto err_unlock; + } + memset(ctx, 0, sizeof(*ctx)); + + if (dbg) { + ctx->debug = atoi(dbg); + if (ctx->debug) + ctx->debug_fixed = 1; + } + + usbi_dbg("libusb-%d.%d.%d%s%s%s", + libusb_version_internal.major, + libusb_version_internal.minor, + libusb_version_internal.micro, + libusb_version_internal.rc, + libusb_version_internal.describe[0] ? " git:" : "", + libusb_version_internal.describe); + + if (usbi_backend->init) { + r = usbi_backend->init(ctx); + if (r) + goto err_free_ctx; + } + + usbi_mutex_init(&ctx->usb_devs_lock, NULL); + usbi_mutex_init(&ctx->open_devs_lock, NULL); + list_init(&ctx->usb_devs); + list_init(&ctx->open_devs); + + r = usbi_io_init(ctx); + if (r < 0) { + if (usbi_backend->exit) + usbi_backend->exit(); + goto err_destroy_mutex; + } + + if (context) { + *context = ctx; + } else if (!usbi_default_context) { + usbi_dbg("created default context"); + usbi_default_context = ctx; + default_context_refcnt++; + } + usbi_mutex_static_unlock(&default_context_lock); + + return 0; + +err_destroy_mutex: + usbi_mutex_destroy(&ctx->open_devs_lock); + usbi_mutex_destroy(&ctx->usb_devs_lock); +err_free_ctx: + free(ctx); +err_unlock: + usbi_mutex_static_unlock(&default_context_lock); + return r; +} + +/** \ingroup lib + * Deinitialize libusb. Should be called after closing all open devices and + * before your application terminates. + * \param ctx the context to deinitialize, or NULL for the default context + */ +void API_EXPORTED libusb_exit(struct libusb_context *ctx) +{ + usbi_dbg(""); + USBI_GET_CONTEXT(ctx); + + /* if working with default context, only actually do the deinitialization + * if we're the last user */ + if (ctx == usbi_default_context) { + usbi_mutex_static_lock(&default_context_lock); + if (--default_context_refcnt > 0) { + usbi_dbg("not destroying default context"); + usbi_mutex_static_unlock(&default_context_lock); + return; + } + usbi_dbg("destroying default context"); + usbi_default_context = NULL; + usbi_mutex_static_unlock(&default_context_lock); + } + + /* a little sanity check. doesn't bother with open_devs locking because + * unless there is an application bug, nobody will be accessing this. */ + if (!list_empty(&ctx->open_devs)) + usbi_warn(ctx, "application left some devices open"); + + usbi_io_exit(ctx); + if (usbi_backend->exit) + usbi_backend->exit(); + + usbi_mutex_destroy(&ctx->open_devs_lock); + usbi_mutex_destroy(&ctx->usb_devs_lock); + free(ctx); +} + +/** \ingroup misc + * Check at runtime if the loaded library has a given capability. + * + * \param capability the \ref libusb_capability to check for + * \returns 1 if the running library has the capability, 0 otherwise + */ +int API_EXPORTED libusb_has_capability(uint32_t capability) +{ + enum libusb_capability cap = capability; + switch (cap) { + case LIBUSB_CAP_HAS_CAPABILITY: + return 1; + } + return 0; +} + +/* this is defined in libusbi.h if needed */ +#ifdef LIBUSB_GETTIMEOFDAY_WIN32 +/* + * gettimeofday + * Implementation according to: + * The Open Group Base Specifications Issue 6 + * IEEE Std 1003.1, 2004 Edition + */ + +/* + * THIS SOFTWARE IS NOT COPYRIGHTED + * + * This source code is offered for use in the public domain. You may + * use, modify or distribute it freely. + * + * This code is distributed in the hope that it will be useful but + * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY + * DISCLAIMED. This includes but is not limited to warranties of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Contributed by: + * Danny Smith <dannysmith@users.sourceforge.net> + */ + +/* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */ +#define _W32_FT_OFFSET (116444736000000000) + +int usbi_gettimeofday(struct timeval *tp, void *tzp) + { + union { + unsigned __int64 ns100; /*time since 1 Jan 1601 in 100ns units */ + FILETIME ft; + } _now; + + if(tp) + { + GetSystemTimeAsFileTime (&_now.ft); + tp->tv_usec=(long)((_now.ns100 / 10) % 1000000 ); + tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000); + } + /* Always return 0 as per Open Group Base Specifications Issue 6. + Do not set errno on error. */ + return 0; +} +#endif + +void usbi_log_v(struct libusb_context *ctx, enum usbi_log_level level, + const char *function, const char *format, va_list args) +{ + FILE *stream = stdout; + const char *prefix; + struct timeval now; + static struct timeval first = { 0, 0 }; + +#ifndef ENABLE_DEBUG_LOGGING + USBI_GET_CONTEXT(ctx); + if (!ctx->debug) + return; + if (level == LOG_LEVEL_WARNING && ctx->debug < 2) + return; + if (level == LOG_LEVEL_INFO && ctx->debug < 3) + return; +#endif + + usbi_gettimeofday(&now, NULL); + if (!first.tv_sec) { + first.tv_sec = now.tv_sec; + first.tv_usec = now.tv_usec; + } + if (now.tv_usec < first.tv_usec) { + now.tv_sec--; + now.tv_usec += 1000000; + } + now.tv_sec -= first.tv_sec; + now.tv_usec -= first.tv_usec; + + switch (level) { + case LOG_LEVEL_INFO: + prefix = "info"; + break; + case LOG_LEVEL_WARNING: + stream = stderr; + prefix = "warning"; + break; + case LOG_LEVEL_ERROR: + stream = stderr; + prefix = "error"; + break; + case LOG_LEVEL_DEBUG: + stream = stderr; + prefix = "debug"; + break; + default: + stream = stderr; + prefix = "unknown"; + break; + } + + fprintf(stream, "libusb: %d.%06d %s [%s] ", + (int)now.tv_sec, (int)now.tv_usec, prefix, function); + + vfprintf(stream, format, args); + + fprintf(stream, "\n"); +} + +void usbi_log(struct libusb_context *ctx, enum usbi_log_level level, + const char *function, const char *format, ...) +{ + va_list args; + + va_start (args, format); + usbi_log_v(ctx, level, function, format, args); + va_end (args); +} + +/** \ingroup misc + * Returns a constant NULL-terminated string with the ASCII name of a libusb + * error code. The caller must not free() the returned string. + * + * \param error_code The \ref libusb_error code to return the name of. + * \returns The error name, or the string **UNKNOWN** if the value of + * error_code is not a known error code. + */ +DEFAULT_VISIBILITY const char * LIBUSB_CALL libusb_error_name(int error_code) +{ + enum libusb_error error = error_code; + switch (error) { + case LIBUSB_SUCCESS: + return "LIBUSB_SUCCESS"; + case LIBUSB_ERROR_IO: + return "LIBUSB_ERROR_IO"; + case LIBUSB_ERROR_INVALID_PARAM: + return "LIBUSB_ERROR_INVALID_PARAM"; + case LIBUSB_ERROR_ACCESS: + return "LIBUSB_ERROR_ACCESS"; + case LIBUSB_ERROR_NO_DEVICE: + return "LIBUSB_ERROR_NO_DEVICE"; + case LIBUSB_ERROR_NOT_FOUND: + return "LIBUSB_ERROR_NOT_FOUND"; + case LIBUSB_ERROR_BUSY: + return "LIBUSB_ERROR_BUSY"; + case LIBUSB_ERROR_TIMEOUT: + return "LIBUSB_ERROR_TIMEOUT"; + case LIBUSB_ERROR_OVERFLOW: + return "LIBUSB_ERROR_OVERFLOW"; + case LIBUSB_ERROR_PIPE: + return "LIBUSB_ERROR_PIPE"; + case LIBUSB_ERROR_INTERRUPTED: + return "LIBUSB_ERROR_INTERRUPTED"; + case LIBUSB_ERROR_NO_MEM: + return "LIBUSB_ERROR_NO_MEM"; + case LIBUSB_ERROR_NOT_SUPPORTED: + return "LIBUSB_ERROR_NOT_SUPPORTED"; + case LIBUSB_ERROR_OTHER: + return "LIBUSB_ERROR_OTHER"; + } + return "**UNKNOWN**"; +} + +/** \ingroup misc + * Returns a pointer to const struct libusb_version with the version + * (major, minor, micro, rc, and nano) of the running library. + */ +DEFAULT_VISIBILITY +const struct libusb_version * LIBUSB_CALL libusb_get_version(void) +{ + return &libusb_version_internal; +} diff --git a/libusb/descriptor.c b/libusb/descriptor.c new file mode 100644 index 0000000..e358e9e --- /dev/null +++ b/libusb/descriptor.c @@ -0,0 +1,730 @@ +/* + * USB descriptor handling functions for libusb + * Copyright (C) 2007 Daniel Drake <dsd@gentoo.org> + * Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <errno.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> + +#include "libusbi.h" + +#define DESC_HEADER_LENGTH 2 +#define DEVICE_DESC_LENGTH 18 +#define CONFIG_DESC_LENGTH 9 +#define INTERFACE_DESC_LENGTH 9 +#define ENDPOINT_DESC_LENGTH 7 +#define ENDPOINT_AUDIO_DESC_LENGTH 9 + +/** @defgroup desc USB descriptors + * This page details how to examine the various standard USB descriptors + * for detected devices + */ + +/* set host_endian if the w values are already in host endian format, + * as opposed to bus endian. */ +int usbi_parse_descriptor(unsigned char *source, const char *descriptor, + void *dest, int host_endian) +{ + unsigned char *sp = source, *dp = dest; + uint16_t w; + const char *cp; + + for (cp = descriptor; *cp; cp++) { + switch (*cp) { + case 'b': /* 8-bit byte */ + *dp++ = *sp++; + break; + case 'w': /* 16-bit word, convert from little endian to CPU */ + dp += ((uintptr_t)dp & 1); /* Align to word boundary */ + + if (host_endian) { + memcpy(dp, sp, 2); + } else { + w = (sp[1] << 8) | sp[0]; + *((uint16_t *)dp) = w; + } + sp += 2; + dp += 2; + break; + } + } + + return (int) (sp - source); +} + +static void clear_endpoint(struct libusb_endpoint_descriptor *endpoint) +{ + if (endpoint->extra) + free((unsigned char *) endpoint->extra); +} + +static int parse_endpoint(struct libusb_context *ctx, + struct libusb_endpoint_descriptor *endpoint, unsigned char *buffer, + int size, int host_endian) +{ + struct usb_descriptor_header header; + unsigned char *extra; + unsigned char *begin; + int parsed = 0; + int len; + + usbi_parse_descriptor(buffer, "bb", &header, 0); + + /* Everything should be fine being passed into here, but we sanity */ + /* check JIC */ + if (header.bLength > size) { + usbi_err(ctx, "ran out of descriptors parsing"); + return -1; + } + + if (header.bDescriptorType != LIBUSB_DT_ENDPOINT) { + usbi_err(ctx, "unexpected descriptor %x (expected %x)", + header.bDescriptorType, LIBUSB_DT_ENDPOINT); + return parsed; + } + + if (header.bLength >= ENDPOINT_AUDIO_DESC_LENGTH) + usbi_parse_descriptor(buffer, "bbbbwbbb", endpoint, host_endian); + else if (header.bLength >= ENDPOINT_DESC_LENGTH) + usbi_parse_descriptor(buffer, "bbbbwb", endpoint, host_endian); + + buffer += header.bLength; + size -= header.bLength; + parsed += header.bLength; + + /* Skip over the rest of the Class Specific or Vendor Specific */ + /* descriptors */ + begin = buffer; + while (size >= DESC_HEADER_LENGTH) { + usbi_parse_descriptor(buffer, "bb", &header, 0); + + if (header.bLength < 2) { + usbi_err(ctx, "invalid descriptor length %d", header.bLength); + return -1; + } + + /* If we find another "proper" descriptor then we're done */ + if ((header.bDescriptorType == LIBUSB_DT_ENDPOINT) || + (header.bDescriptorType == LIBUSB_DT_INTERFACE) || + (header.bDescriptorType == LIBUSB_DT_CONFIG) || + (header.bDescriptorType == LIBUSB_DT_DEVICE)) + break; + + usbi_dbg("skipping descriptor %x", header.bDescriptorType); + buffer += header.bLength; + size -= header.bLength; + parsed += header.bLength; + } + + /* Copy any unknown descriptors into a storage area for drivers */ + /* to later parse */ + len = (int)(buffer - begin); + if (!len) { + endpoint->extra = NULL; + endpoint->extra_length = 0; + return parsed; + } + + extra = malloc(len); + endpoint->extra = extra; + if (!extra) { + endpoint->extra_length = 0; + return LIBUSB_ERROR_NO_MEM; + } + + memcpy(extra, begin, len); + endpoint->extra_length = len; + + return parsed; +} + +static void clear_interface(struct libusb_interface *usb_interface) +{ + int i; + int j; + + if (usb_interface->altsetting) { + for (i = 0; i < usb_interface->num_altsetting; i++) { + struct libusb_interface_descriptor *ifp = + (struct libusb_interface_descriptor *) + usb_interface->altsetting + i; + if (ifp->extra) + free((void *) ifp->extra); + if (ifp->endpoint) { + for (j = 0; j < ifp->bNumEndpoints; j++) + clear_endpoint((struct libusb_endpoint_descriptor *) + ifp->endpoint + j); + free((void *) ifp->endpoint); + } + } + free((void *) usb_interface->altsetting); + usb_interface->altsetting = NULL; + } + +} + +static int parse_interface(libusb_context *ctx, + struct libusb_interface *usb_interface, unsigned char *buffer, int size, + int host_endian) +{ + int i; + int len; + int r; + int parsed = 0; + size_t tmp; + struct usb_descriptor_header header; + struct libusb_interface_descriptor *ifp; + unsigned char *begin; + + usb_interface->num_altsetting = 0; + + while (size >= INTERFACE_DESC_LENGTH) { + struct libusb_interface_descriptor *altsetting = + (struct libusb_interface_descriptor *) usb_interface->altsetting; + altsetting = realloc(altsetting, + sizeof(struct libusb_interface_descriptor) * + (usb_interface->num_altsetting + 1)); + if (!altsetting) { + r = LIBUSB_ERROR_NO_MEM; + goto err; + } + usb_interface->altsetting = altsetting; + + ifp = altsetting + usb_interface->num_altsetting; + usb_interface->num_altsetting++; + usbi_parse_descriptor(buffer, "bbbbbbbbb", ifp, 0); + ifp->extra = NULL; + ifp->extra_length = 0; + ifp->endpoint = NULL; + + /* Skip over the interface */ + buffer += ifp->bLength; + parsed += ifp->bLength; + size -= ifp->bLength; + + begin = buffer; + + /* Skip over any interface, class or vendor descriptors */ + while (size >= DESC_HEADER_LENGTH) { + usbi_parse_descriptor(buffer, "bb", &header, 0); + if (header.bLength < 2) { + usbi_err(ctx, "invalid descriptor of length %d", + header.bLength); + r = LIBUSB_ERROR_IO; + goto err; + } + + /* If we find another "proper" descriptor then we're done */ + if ((header.bDescriptorType == LIBUSB_DT_INTERFACE) || + (header.bDescriptorType == LIBUSB_DT_ENDPOINT) || + (header.bDescriptorType == LIBUSB_DT_CONFIG) || + (header.bDescriptorType == LIBUSB_DT_DEVICE)) + break; + + buffer += header.bLength; + parsed += header.bLength; + size -= header.bLength; + } + + /* Copy any unknown descriptors into a storage area for */ + /* drivers to later parse */ + len = (int)(buffer - begin); + if (len) { + ifp->extra = malloc(len); + if (!ifp->extra) { + r = LIBUSB_ERROR_NO_MEM; + goto err; + } + memcpy((unsigned char *) ifp->extra, begin, len); + ifp->extra_length = len; + } + + /* Did we hit an unexpected descriptor? */ + if (size >= DESC_HEADER_LENGTH) { + usbi_parse_descriptor(buffer, "bb", &header, 0); + if ((header.bDescriptorType == LIBUSB_DT_CONFIG) || + (header.bDescriptorType == LIBUSB_DT_DEVICE)) { + return parsed; + } + } + + if (ifp->bNumEndpoints > USB_MAXENDPOINTS) { + usbi_err(ctx, "too many endpoints (%d)", ifp->bNumEndpoints); + r = LIBUSB_ERROR_IO; + goto err; + } + + if (ifp->bNumEndpoints > 0) { + struct libusb_endpoint_descriptor *endpoint; + tmp = ifp->bNumEndpoints * sizeof(struct libusb_endpoint_descriptor); + endpoint = malloc(tmp); + ifp->endpoint = endpoint; + if (!endpoint) { + r = LIBUSB_ERROR_NO_MEM; + goto err; + } + + memset(endpoint, 0, tmp); + for (i = 0; i < ifp->bNumEndpoints; i++) { + usbi_parse_descriptor(buffer, "bb", &header, 0); + + if (header.bLength > size) { + usbi_err(ctx, "ran out of descriptors parsing"); + r = LIBUSB_ERROR_IO; + goto err; + } + + r = parse_endpoint(ctx, endpoint + i, buffer, size, + host_endian); + if (r < 0) + goto err; + + buffer += r; + parsed += r; + size -= r; + } + } + + /* We check to see if it's an alternate to this one */ + ifp = (struct libusb_interface_descriptor *) buffer; + if (size < LIBUSB_DT_INTERFACE_SIZE || + ifp->bDescriptorType != LIBUSB_DT_INTERFACE || + !ifp->bAlternateSetting) + return parsed; + } + + return parsed; +err: + clear_interface(usb_interface); + return r; +} + +static void clear_configuration(struct libusb_config_descriptor *config) +{ + if (config->interface) { + int i; + for (i = 0; i < config->bNumInterfaces; i++) + clear_interface((struct libusb_interface *) + config->interface + i); + free((void *) config->interface); + } + if (config->extra) + free((void *) config->extra); +} + +static int parse_configuration(struct libusb_context *ctx, + struct libusb_config_descriptor *config, unsigned char *buffer, + int host_endian) +{ + int i; + int r; + int size; + size_t tmp; + struct usb_descriptor_header header; + struct libusb_interface *usb_interface; + + usbi_parse_descriptor(buffer, "bbwbbbbb", config, host_endian); + size = config->wTotalLength; + + if (config->bNumInterfaces > USB_MAXINTERFACES) { + usbi_err(ctx, "too many interfaces (%d)", config->bNumInterfaces); + return LIBUSB_ERROR_IO; + } + + tmp = config->bNumInterfaces * sizeof(struct libusb_interface); + usb_interface = malloc(tmp); + config->interface = usb_interface; + if (!config->interface) + return LIBUSB_ERROR_NO_MEM; + + memset(usb_interface, 0, tmp); + buffer += config->bLength; + size -= config->bLength; + + config->extra = NULL; + config->extra_length = 0; + + for (i = 0; i < config->bNumInterfaces; i++) { + int len; + unsigned char *begin; + + /* Skip over the rest of the Class Specific or Vendor */ + /* Specific descriptors */ + begin = buffer; + while (size >= DESC_HEADER_LENGTH) { + usbi_parse_descriptor(buffer, "bb", &header, 0); + + if ((header.bLength > size) || + (header.bLength < DESC_HEADER_LENGTH)) { + usbi_err(ctx, "invalid descriptor length of %d", + header.bLength); + r = LIBUSB_ERROR_IO; + goto err; + } + + /* If we find another "proper" descriptor then we're done */ + if ((header.bDescriptorType == LIBUSB_DT_ENDPOINT) || + (header.bDescriptorType == LIBUSB_DT_INTERFACE) || + (header.bDescriptorType == LIBUSB_DT_CONFIG) || + (header.bDescriptorType == LIBUSB_DT_DEVICE)) + break; + + usbi_dbg("skipping descriptor 0x%x\n", header.bDescriptorType); + buffer += header.bLength; + size -= header.bLength; + } + + /* Copy any unknown descriptors into a storage area for */ + /* drivers to later parse */ + len = (int)(buffer - begin); + if (len) { + /* FIXME: We should realloc and append here */ + if (!config->extra_length) { + config->extra = malloc(len); + if (!config->extra) { + r = LIBUSB_ERROR_NO_MEM; + goto err; + } + + memcpy((unsigned char *) config->extra, begin, len); + config->extra_length = len; + } + } + + r = parse_interface(ctx, usb_interface + i, buffer, size, host_endian); + if (r < 0) + goto err; + + buffer += r; + size -= r; + } + + return size; + +err: + clear_configuration(config); + return r; +} + +/** \ingroup desc + * Get the USB device descriptor for a given device. + * + * This is a non-blocking function; the device descriptor is cached in memory. + * + * \param dev the device + * \param desc output location for the descriptor data + * \returns 0 on success or a LIBUSB_ERROR code on failure + */ +int API_EXPORTED libusb_get_device_descriptor(libusb_device *dev, + struct libusb_device_descriptor *desc) +{ + unsigned char raw_desc[DEVICE_DESC_LENGTH]; + int host_endian = 0; + int r; + + usbi_dbg(""); + r = usbi_backend->get_device_descriptor(dev, raw_desc, &host_endian); + if (r < 0) + return r; + + memcpy((unsigned char *) desc, raw_desc, sizeof(raw_desc)); + if (!host_endian) { + desc->bcdUSB = libusb_le16_to_cpu(desc->bcdUSB); + desc->idVendor = libusb_le16_to_cpu(desc->idVendor); + desc->idProduct = libusb_le16_to_cpu(desc->idProduct); + desc->bcdDevice = libusb_le16_to_cpu(desc->bcdDevice); + } + return 0; +} + +/** \ingroup desc + * Get the USB configuration descriptor for the currently active configuration. + * This is a non-blocking function which does not involve any requests being + * sent to the device. + * + * \param dev a device + * \param config output location for the USB configuration descriptor. Only + * valid if 0 was returned. Must be freed with libusb_free_config_descriptor() + * after use. + * \returns 0 on success + * \returns LIBUSB_ERROR_NOT_FOUND if the device is in unconfigured state + * \returns another LIBUSB_ERROR code on error + * \see libusb_get_config_descriptor + */ +int API_EXPORTED libusb_get_active_config_descriptor(libusb_device *dev, + struct libusb_config_descriptor **config) +{ + struct libusb_config_descriptor *_config = malloc(sizeof(*_config)); + unsigned char tmp[8]; + unsigned char *buf = NULL; + int host_endian = 0; + int r; + + usbi_dbg(""); + if (!_config) + return LIBUSB_ERROR_NO_MEM; + + r = usbi_backend->get_active_config_descriptor(dev, tmp, sizeof(tmp), + &host_endian); + if (r < 0) + goto err; + + usbi_parse_descriptor(tmp, "bbw", _config, host_endian); + buf = malloc(_config->wTotalLength); + if (!buf) { + r = LIBUSB_ERROR_NO_MEM; + goto err; + } + + r = usbi_backend->get_active_config_descriptor(dev, buf, + _config->wTotalLength, &host_endian); + if (r < 0) + goto err; + + r = parse_configuration(dev->ctx, _config, buf, host_endian); + if (r < 0) { + usbi_err(dev->ctx, "parse_configuration failed with error %d", r); + goto err; + } else if (r > 0) { + usbi_warn(dev->ctx, "descriptor data still left"); + } + + free(buf); + *config = _config; + return 0; + +err: + free(_config); + if (buf) + free(buf); + return r; +} + +/** \ingroup desc + * Get a USB configuration descriptor based on its index. + * This is a non-blocking function which does not involve any requests being + * sent to the device. + * + * \param dev a device + * \param config_index the index of the configuration you wish to retrieve + * \param config output location for the USB configuration descriptor. Only + * valid if 0 was returned. Must be freed with libusb_free_config_descriptor() + * after use. + * \returns 0 on success + * \returns LIBUSB_ERROR_NOT_FOUND if the configuration does not exist + * \returns another LIBUSB_ERROR code on error + * \see libusb_get_active_config_descriptor() + * \see libusb_get_config_descriptor_by_value() + */ +int API_EXPORTED libusb_get_config_descriptor(libusb_device *dev, + uint8_t config_index, struct libusb_config_descriptor **config) +{ + struct libusb_config_descriptor *_config; + unsigned char tmp[8]; + unsigned char *buf = NULL; + int host_endian = 0; + int r; + + usbi_dbg("index %d", config_index); + if (config_index >= dev->num_configurations) + return LIBUSB_ERROR_NOT_FOUND; + + _config = malloc(sizeof(*_config)); + if (!_config) + return LIBUSB_ERROR_NO_MEM; + + r = usbi_backend->get_config_descriptor(dev, config_index, tmp, + sizeof(tmp), &host_endian); + if (r < 0) + goto err; + + usbi_parse_descriptor(tmp, "bbw", _config, host_endian); + buf = malloc(_config->wTotalLength); + if (!buf) { + r = LIBUSB_ERROR_NO_MEM; + goto err; + } + + host_endian = 0; + r = usbi_backend->get_config_descriptor(dev, config_index, buf, + _config->wTotalLength, &host_endian); + if (r < 0) + goto err; + + r = parse_configuration(dev->ctx, _config, buf, host_endian); + if (r < 0) { + usbi_err(dev->ctx, "parse_configuration failed with error %d", r); + goto err; + } else if (r > 0) { + usbi_warn(dev->ctx, "descriptor data still left"); + } + + free(buf); + *config = _config; + return 0; + +err: + free(_config); + if (buf) + free(buf); + return r; +} + +/* iterate through all configurations, returning the index of the configuration + * matching a specific bConfigurationValue in the idx output parameter, or -1 + * if the config was not found. + * returns 0 or a LIBUSB_ERROR code + */ +int usbi_get_config_index_by_value(struct libusb_device *dev, + uint8_t bConfigurationValue, int *idx) +{ + uint8_t i; + + usbi_dbg("value %d", bConfigurationValue); + for (i = 0; i < dev->num_configurations; i++) { + unsigned char tmp[6]; + int host_endian; + int r = usbi_backend->get_config_descriptor(dev, i, tmp, sizeof(tmp), + &host_endian); + if (r < 0) + return r; + if (tmp[5] == bConfigurationValue) { + *idx = i; + return 0; + } + } + + *idx = -1; + return 0; +} + +/** \ingroup desc + * Get a USB configuration descriptor with a specific bConfigurationValue. + * This is a non-blocking function which does not involve any requests being + * sent to the device. + * + * \param dev a device + * \param bConfigurationValue the bConfigurationValue of the configuration you + * wish to retrieve + * \param config output location for the USB configuration descriptor. Only + * valid if 0 was returned. Must be freed with libusb_free_config_descriptor() + * after use. + * \returns 0 on success + * \returns LIBUSB_ERROR_NOT_FOUND if the configuration does not exist + * \returns another LIBUSB_ERROR code on error + * \see libusb_get_active_config_descriptor() + * \see libusb_get_config_descriptor() + */ +int API_EXPORTED libusb_get_config_descriptor_by_value(libusb_device *dev, + uint8_t bConfigurationValue, struct libusb_config_descriptor **config) +{ + int idx; + int r = usbi_get_config_index_by_value(dev, bConfigurationValue, &idx); + if (r < 0) + return r; + else if (idx == -1) + return LIBUSB_ERROR_NOT_FOUND; + else + return libusb_get_config_descriptor(dev, (uint8_t) idx, config); +} + +/** \ingroup desc + * Free a configuration descriptor obtained from + * libusb_get_active_config_descriptor() or libusb_get_config_descriptor(). + * It is safe to call this function with a NULL config parameter, in which + * case the function simply returns. + * + * \param config the configuration descriptor to free + */ +void API_EXPORTED libusb_free_config_descriptor( + struct libusb_config_descriptor *config) +{ + if (!config) + return; + + clear_configuration(config); + free(config); +} + +/** \ingroup desc + * Retrieve a string descriptor in C style ASCII. + * + * Wrapper around libusb_get_string_descriptor(). Uses the first language + * supported by the device. + * + * \param dev a device handle + * \param desc_index the index of the descriptor to retrieve + * \param data output buffer for ASCII string descriptor + * \param length size of data buffer + * \returns number of bytes returned in data, or LIBUSB_ERROR code on failure + */ +int API_EXPORTED libusb_get_string_descriptor_ascii(libusb_device_handle *dev, + uint8_t desc_index, unsigned char *data, int length) +{ + unsigned char tbuf[255]; /* Some devices choke on size > 255 */ + int r, si, di; + uint16_t langid; + + /* Asking for the zero'th index is special - it returns a string + * descriptor that contains all the language IDs supported by the + * device. Typically there aren't many - often only one. Language + * IDs are 16 bit numbers, and they start at the third byte in the + * descriptor. There's also no point in trying to read descriptor 0 + * with this function. See USB 2.0 specification section 9.6.7 for + * more information. + */ + + if (desc_index == 0) + return LIBUSB_ERROR_INVALID_PARAM; + + r = libusb_get_string_descriptor(dev, 0, 0, tbuf, sizeof(tbuf)); + if (r < 0) + return r; + + if (r < 4) + return LIBUSB_ERROR_IO; + + langid = tbuf[2] | (tbuf[3] << 8); + + r = libusb_get_string_descriptor(dev, desc_index, langid, tbuf, + sizeof(tbuf)); + if (r < 0) + return r; + + if (tbuf[1] != LIBUSB_DT_STRING) + return LIBUSB_ERROR_IO; + + if (tbuf[0] > r) + return LIBUSB_ERROR_IO; + + for (di = 0, si = 2; si < tbuf[0]; si += 2) { + if (di >= (length - 1)) + break; + + if (tbuf[si + 1]) /* high byte */ + data[di++] = '?'; + else + data[di++] = tbuf[si]; + } + + data[di] = 0; + return di; +} + diff --git a/libusb/io.c b/libusb/io.c new file mode 100644 index 0000000..e9bd312 --- /dev/null +++ b/libusb/io.c @@ -0,0 +1,2454 @@ +/* + * I/O functions for libusb + * Copyright (C) 2007-2009 Daniel Drake <dsd@gentoo.org> + * Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <config.h> +#include <errno.h> +#include <signal.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#ifdef USBI_TIMERFD_AVAILABLE +#include <sys/timerfd.h> +#endif + +#include "libusbi.h" + +/** + * \page io Synchronous and asynchronous device I/O + * + * \section intro Introduction + * + * If you're using libusb in your application, you're probably wanting to + * perform I/O with devices - you want to perform USB data transfers. + * + * libusb offers two separate interfaces for device I/O. This page aims to + * introduce the two in order to help you decide which one is more suitable + * for your application. You can also choose to use both interfaces in your + * application by considering each transfer on a case-by-case basis. + * + * Once you have read through the following discussion, you should consult the + * detailed API documentation pages for the details: + * - \ref syncio + * - \ref asyncio + * + * \section theory Transfers at a logical level + * + * At a logical level, USB transfers typically happen in two parts. For + * example, when reading data from a endpoint: + * -# A request for data is sent to the device + * -# Some time later, the incoming data is received by the host + * + * or when writing data to an endpoint: + * + * -# The data is sent to the device + * -# Some time later, the host receives acknowledgement from the device that + * the data has been transferred. + * + * There may be an indefinite delay between the two steps. Consider a + * fictional USB input device with a button that the user can press. In order + * to determine when the button is pressed, you would likely submit a request + * to read data on a bulk or interrupt endpoint and wait for data to arrive. + * Data will arrive when the button is pressed by the user, which is + * potentially hours later. + * + * libusb offers both a synchronous and an asynchronous interface to performing + * USB transfers. The main difference is that the synchronous interface + * combines both steps indicated above into a single function call, whereas + * the asynchronous interface separates them. + * + * \section sync The synchronous interface + * + * The synchronous I/O interface allows you to perform a USB transfer with + * a single function call. When the function call returns, the transfer has + * completed and you can parse the results. + * + * If you have used the libusb-0.1 before, this I/O style will seem familar to + * you. libusb-0.1 only offered a synchronous interface. + * + * In our input device example, to read button presses you might write code + * in the following style: +\code +unsigned char data[4]; +int actual_length; +int r = libusb_bulk_transfer(handle, LIBUSB_ENDPOINT_IN, data, sizeof(data), &actual_length, 0); +if (r == 0 && actual_length == sizeof(data)) { + // results of the transaction can now be found in the data buffer + // parse them here and report button press +} else { + error(); +} +\endcode + * + * The main advantage of this model is simplicity: you did everything with + * a single simple function call. + * + * However, this interface has its limitations. Your application will sleep + * inside libusb_bulk_transfer() until the transaction has completed. If it + * takes the user 3 hours to press the button, your application will be + * sleeping for that long. Execution will be tied up inside the library - + * the entire thread will be useless for that duration. + * + * Another issue is that by tieing up the thread with that single transaction + * there is no possibility of performing I/O with multiple endpoints and/or + * multiple devices simultaneously, unless you resort to creating one thread + * per transaction. + * + * Additionally, there is no opportunity to cancel the transfer after the + * request has been submitted. + * + * For details on how to use the synchronous API, see the + * \ref syncio "synchronous I/O API documentation" pages. + * + * \section async The asynchronous interface + * + * Asynchronous I/O is the most significant new feature in libusb-1.0. + * Although it is a more complex interface, it solves all the issues detailed + * above. + * + * Instead of providing which functions that block until the I/O has complete, + * libusb's asynchronous interface presents non-blocking functions which + * begin a transfer and then return immediately. Your application passes a + * callback function pointer to this non-blocking function, which libusb will + * call with the results of the transaction when it has completed. + * + * Transfers which have been submitted through the non-blocking functions + * can be cancelled with a separate function call. + * + * The non-blocking nature of this interface allows you to be simultaneously + * performing I/O to multiple endpoints on multiple devices, without having + * to use threads. + * + * This added flexibility does come with some complications though: + * - In the interest of being a lightweight library, libusb does not create + * threads and can only operate when your application is calling into it. Your + * application must call into libusb from it's main loop when events are ready + * to be handled, or you must use some other scheme to allow libusb to + * undertake whatever work needs to be done. + * - libusb also needs to be called into at certain fixed points in time in + * order to accurately handle transfer timeouts. + * - Memory handling becomes more complex. You cannot use stack memory unless + * the function with that stack is guaranteed not to return until the transfer + * callback has finished executing. + * - You generally lose some linearity from your code flow because submitting + * the transfer request is done in a separate function from where the transfer + * results are handled. This becomes particularly obvious when you want to + * submit a second transfer based on the results of an earlier transfer. + * + * Internally, libusb's synchronous interface is expressed in terms of function + * calls to the asynchronous interface. + * + * For details on how to use the asynchronous API, see the + * \ref asyncio "asynchronous I/O API" documentation pages. + */ + + +/** + * \page packetoverflow Packets and overflows + * + * \section packets Packet abstraction + * + * The USB specifications describe how data is transmitted in packets, with + * constraints on packet size defined by endpoint descriptors. The host must + * not send data payloads larger than the endpoint's maximum packet size. + * + * libusb and the underlying OS abstract out the packet concept, allowing you + * to request transfers of any size. Internally, the request will be divided + * up into correctly-sized packets. You do not have to be concerned with + * packet sizes, but there is one exception when considering overflows. + * + * \section overflow Bulk/interrupt transfer overflows + * + * When requesting data on a bulk endpoint, libusb requires you to supply a + * buffer and the maximum number of bytes of data that libusb can put in that + * buffer. However, the size of the buffer is not communicated to the device - + * the device is just asked to send any amount of data. + * + * There is no problem if the device sends an amount of data that is less than + * or equal to the buffer size. libusb reports this condition to you through + * the \ref libusb_transfer::actual_length "libusb_transfer.actual_length" + * field. + * + * Problems may occur if the device attempts to send more data than can fit in + * the buffer. libusb reports LIBUSB_TRANSFER_OVERFLOW for this condition but + * other behaviour is largely undefined: actual_length may or may not be + * accurate, the chunk of data that can fit in the buffer (before overflow) + * may or may not have been transferred. + * + * Overflows are nasty, but can be avoided. Even though you were told to + * ignore packets above, think about the lower level details: each transfer is + * split into packets (typically small, with a maximum size of 512 bytes). + * Overflows can only happen if the final packet in an incoming data transfer + * is smaller than the actual packet that the device wants to transfer. + * Therefore, you will never see an overflow if your transfer buffer size is a + * multiple of the endpoint's packet size: the final packet will either + * fill up completely or will be only partially filled. + */ + +/** + * @defgroup asyncio Asynchronous device I/O + * + * This page details libusb's asynchronous (non-blocking) API for USB device + * I/O. This interface is very powerful but is also quite complex - you will + * need to read this page carefully to understand the necessary considerations + * and issues surrounding use of this interface. Simplistic applications + * may wish to consider the \ref syncio "synchronous I/O API" instead. + * + * The asynchronous interface is built around the idea of separating transfer + * submission and handling of transfer completion (the synchronous model + * combines both of these into one). There may be a long delay between + * submission and completion, however the asynchronous submission function + * is non-blocking so will return control to your application during that + * potentially long delay. + * + * \section asyncabstraction Transfer abstraction + * + * For the asynchronous I/O, libusb implements the concept of a generic + * transfer entity for all types of I/O (control, bulk, interrupt, + * isochronous). The generic transfer object must be treated slightly + * differently depending on which type of I/O you are performing with it. + * + * This is represented by the public libusb_transfer structure type. + * + * \section asynctrf Asynchronous transfers + * + * We can view asynchronous I/O as a 5 step process: + * -# <b>Allocation</b>: allocate a libusb_transfer + * -# <b>Filling</b>: populate the libusb_transfer instance with information + * about the transfer you wish to perform + * -# <b>Submission</b>: ask libusb to submit the transfer + * -# <b>Completion handling</b>: examine transfer results in the + * libusb_transfer structure + * -# <b>Deallocation</b>: clean up resources + * + * + * \subsection asyncalloc Allocation + * + * This step involves allocating memory for a USB transfer. This is the + * generic transfer object mentioned above. At this stage, the transfer + * is "blank" with no details about what type of I/O it will be used for. + * + * Allocation is done with the libusb_alloc_transfer() function. You must use + * this function rather than allocating your own transfers. + * + * \subsection asyncfill Filling + * + * This step is where you take a previously allocated transfer and fill it + * with information to determine the message type and direction, data buffer, + * callback function, etc. + * + * You can either fill the required fields yourself or you can use the + * helper functions: libusb_fill_control_transfer(), libusb_fill_bulk_transfer() + * and libusb_fill_interrupt_transfer(). + * + * \subsection asyncsubmit Submission + * + * When you have allocated a transfer and filled it, you can submit it using + * libusb_submit_transfer(). This function returns immediately but can be + * regarded as firing off the I/O request in the background. + * + * \subsection asynccomplete Completion handling + * + * After a transfer has been submitted, one of four things can happen to it: + * + * - The transfer completes (i.e. some data was transferred) + * - The transfer has a timeout and the timeout expires before all data is + * transferred + * - The transfer fails due to an error + * - The transfer is cancelled + * + * Each of these will cause the user-specified transfer callback function to + * be invoked. It is up to the callback function to determine which of the + * above actually happened and to act accordingly. + * + * The user-specified callback is passed a pointer to the libusb_transfer + * structure which was used to setup and submit the transfer. At completion + * time, libusb has populated this structure with results of the transfer: + * success or failure reason, number of bytes of data transferred, etc. See + * the libusb_transfer structure documentation for more information. + * + * \subsection Deallocation + * + * When a transfer has completed (i.e. the callback function has been invoked), + * you are advised to free the transfer (unless you wish to resubmit it, see + * below). Transfers are deallocated with libusb_free_transfer(). + * + * It is undefined behaviour to free a transfer which has not completed. + * + * \section asyncresubmit Resubmission + * + * You may be wondering why allocation, filling, and submission are all + * separated above where they could reasonably be combined into a single + * operation. + * + * The reason for separation is to allow you to resubmit transfers without + * having to allocate new ones every time. This is especially useful for + * common situations dealing with interrupt endpoints - you allocate one + * transfer, fill and submit it, and when it returns with results you just + * resubmit it for the next interrupt. + * + * \section asynccancel Cancellation + * + * Another advantage of using the asynchronous interface is that you have + * the ability to cancel transfers which have not yet completed. This is + * done by calling the libusb_cancel_transfer() function. + * + * libusb_cancel_transfer() is asynchronous/non-blocking in itself. When the + * cancellation actually completes, the transfer's callback function will + * be invoked, and the callback function should check the transfer status to + * determine that it was cancelled. + * + * Freeing the transfer after it has been cancelled but before cancellation + * has completed will result in undefined behaviour. + * + * When a transfer is cancelled, some of the data may have been transferred. + * libusb will communicate this to you in the transfer callback. Do not assume + * that no data was transferred. + * + * \section bulk_overflows Overflows on device-to-host bulk/interrupt endpoints + * + * If your device does not have predictable transfer sizes (or it misbehaves), + * your application may submit a request for data on an IN endpoint which is + * smaller than the data that the device wishes to send. In some circumstances + * this will cause an overflow, which is a nasty condition to deal with. See + * the \ref packetoverflow page for discussion. + * + * \section asyncctrl Considerations for control transfers + * + * The <tt>libusb_transfer</tt> structure is generic and hence does not + * include specific fields for the control-specific setup packet structure. + * + * In order to perform a control transfer, you must place the 8-byte setup + * packet at the start of the data buffer. To simplify this, you could + * cast the buffer pointer to type struct libusb_control_setup, or you can + * use the helper function libusb_fill_control_setup(). + * + * The wLength field placed in the setup packet must be the length you would + * expect to be sent in the setup packet: the length of the payload that + * follows (or the expected maximum number of bytes to receive). However, + * the length field of the libusb_transfer object must be the length of + * the data buffer - i.e. it should be wLength <em>plus</em> the size of + * the setup packet (LIBUSB_CONTROL_SETUP_SIZE). + * + * If you use the helper functions, this is simplified for you: + * -# Allocate a buffer of size LIBUSB_CONTROL_SETUP_SIZE plus the size of the + * data you are sending/requesting. + * -# Call libusb_fill_control_setup() on the data buffer, using the transfer + * request size as the wLength value (i.e. do not include the extra space you + * allocated for the control setup). + * -# If this is a host-to-device transfer, place the data to be transferred + * in the data buffer, starting at offset LIBUSB_CONTROL_SETUP_SIZE. + * -# Call libusb_fill_control_transfer() to associate the data buffer with + * the transfer (and to set the remaining details such as callback and timeout). + * - Note that there is no parameter to set the length field of the transfer. + * The length is automatically inferred from the wLength field of the setup + * packet. + * -# Submit the transfer. + * + * The multi-byte control setup fields (wValue, wIndex and wLength) must + * be given in little-endian byte order (the endianness of the USB bus). + * Endianness conversion is transparently handled by + * libusb_fill_control_setup() which is documented to accept host-endian + * values. + * + * Further considerations are needed when handling transfer completion in + * your callback function: + * - As you might expect, the setup packet will still be sitting at the start + * of the data buffer. + * - If this was a device-to-host transfer, the received data will be sitting + * at offset LIBUSB_CONTROL_SETUP_SIZE into the buffer. + * - The actual_length field of the transfer structure is relative to the + * wLength of the setup packet, rather than the size of the data buffer. So, + * if your wLength was 4, your transfer's <tt>length</tt> was 12, then you + * should expect an <tt>actual_length</tt> of 4 to indicate that the data was + * transferred in entirity. + * + * To simplify parsing of setup packets and obtaining the data from the + * correct offset, you may wish to use the libusb_control_transfer_get_data() + * and libusb_control_transfer_get_setup() functions within your transfer + * callback. + * + * Even though control endpoints do not halt, a completed control transfer + * may have a LIBUSB_TRANSFER_STALL status code. This indicates the control + * request was not supported. + * + * \section asyncintr Considerations for interrupt transfers + * + * All interrupt transfers are performed using the polling interval presented + * by the bInterval value of the endpoint descriptor. + * + * \section asynciso Considerations for isochronous transfers + * + * Isochronous transfers are more complicated than transfers to + * non-isochronous endpoints. + * + * To perform I/O to an isochronous endpoint, allocate the transfer by calling + * libusb_alloc_transfer() with an appropriate number of isochronous packets. + * + * During filling, set \ref libusb_transfer::type "type" to + * \ref libusb_transfer_type::LIBUSB_TRANSFER_TYPE_ISOCHRONOUS + * "LIBUSB_TRANSFER_TYPE_ISOCHRONOUS", and set + * \ref libusb_transfer::num_iso_packets "num_iso_packets" to a value less than + * or equal to the number of packets you requested during allocation. + * libusb_alloc_transfer() does not set either of these fields for you, given + * that you might not even use the transfer on an isochronous endpoint. + * + * Next, populate the length field for the first num_iso_packets entries in + * the \ref libusb_transfer::iso_packet_desc "iso_packet_desc" array. Section + * 5.6.3 of the USB2 specifications describe how the maximum isochronous + * packet length is determined by the wMaxPacketSize field in the endpoint + * descriptor. + * Two functions can help you here: + * + * - libusb_get_max_iso_packet_size() is an easy way to determine the max + * packet size for an isochronous endpoint. Note that the maximum packet + * size is actually the maximum number of bytes that can be transmitted in + * a single microframe, therefore this function multiplies the maximum number + * of bytes per transaction by the number of transaction opportunities per + * microframe. + * - libusb_set_iso_packet_lengths() assigns the same length to all packets + * within a transfer, which is usually what you want. + * + * For outgoing transfers, you'll obviously fill the buffer and populate the + * packet descriptors in hope that all the data gets transferred. For incoming + * transfers, you must ensure the buffer has sufficient capacity for + * the situation where all packets transfer the full amount of requested data. + * + * Completion handling requires some extra consideration. The + * \ref libusb_transfer::actual_length "actual_length" field of the transfer + * is meaningless and should not be examined; instead you must refer to the + * \ref libusb_iso_packet_descriptor::actual_length "actual_length" field of + * each individual packet. + * + * The \ref libusb_transfer::status "status" field of the transfer is also a + * little misleading: + * - If the packets were submitted and the isochronous data microframes + * completed normally, status will have value + * \ref libusb_transfer_status::LIBUSB_TRANSFER_COMPLETED + * "LIBUSB_TRANSFER_COMPLETED". Note that bus errors and software-incurred + * delays are not counted as transfer errors; the transfer.status field may + * indicate COMPLETED even if some or all of the packets failed. Refer to + * the \ref libusb_iso_packet_descriptor::status "status" field of each + * individual packet to determine packet failures. + * - The status field will have value + * \ref libusb_transfer_status::LIBUSB_TRANSFER_ERROR + * "LIBUSB_TRANSFER_ERROR" only when serious errors were encountered. + * - Other transfer status codes occur with normal behaviour. + * + * The data for each packet will be found at an offset into the buffer that + * can be calculated as if each prior packet completed in full. The + * libusb_get_iso_packet_buffer() and libusb_get_iso_packet_buffer_simple() + * functions may help you here. + * + * \section asyncmem Memory caveats + * + * In most circumstances, it is not safe to use stack memory for transfer + * buffers. This is because the function that fired off the asynchronous + * transfer may return before libusb has finished using the buffer, and when + * the function returns it's stack gets destroyed. This is true for both + * host-to-device and device-to-host transfers. + * + * The only case in which it is safe to use stack memory is where you can + * guarantee that the function owning the stack space for the buffer does not + * return until after the transfer's callback function has completed. In every + * other case, you need to use heap memory instead. + * + * \section asyncflags Fine control + * + * Through using this asynchronous interface, you may find yourself repeating + * a few simple operations many times. You can apply a bitwise OR of certain + * flags to a transfer to simplify certain things: + * - \ref libusb_transfer_flags::LIBUSB_TRANSFER_SHORT_NOT_OK + * "LIBUSB_TRANSFER_SHORT_NOT_OK" results in transfers which transferred + * less than the requested amount of data being marked with status + * \ref libusb_transfer_status::LIBUSB_TRANSFER_ERROR "LIBUSB_TRANSFER_ERROR" + * (they would normally be regarded as COMPLETED) + * - \ref libusb_transfer_flags::LIBUSB_TRANSFER_FREE_BUFFER + * "LIBUSB_TRANSFER_FREE_BUFFER" allows you to ask libusb to free the transfer + * buffer when freeing the transfer. + * - \ref libusb_transfer_flags::LIBUSB_TRANSFER_FREE_TRANSFER + * "LIBUSB_TRANSFER_FREE_TRANSFER" causes libusb to automatically free the + * transfer after the transfer callback returns. + * + * \section asyncevent Event handling + * + * In accordance of the aim of being a lightweight library, libusb does not + * create threads internally. This means that libusb code does not execute + * at any time other than when your application is calling a libusb function. + * However, an asynchronous model requires that libusb perform work at various + * points in time - namely processing the results of previously-submitted + * transfers and invoking the user-supplied callback function. + * + * This gives rise to the libusb_handle_events() function which your + * application must call into when libusb has work do to. This gives libusb + * the opportunity to reap pending transfers, invoke callbacks, etc. + * + * The first issue to discuss here is how your application can figure out + * when libusb has work to do. In fact, there are two naive options which + * do not actually require your application to know this: + * -# Periodically call libusb_handle_events() in non-blocking mode at fixed + * short intervals from your main loop + * -# Repeatedly call libusb_handle_events() in blocking mode from a dedicated + * thread. + * + * The first option is plainly not very nice, and will cause unnecessary + * CPU wakeups leading to increased power usage and decreased battery life. + * The second option is not very nice either, but may be the nicest option + * available to you if the "proper" approach can not be applied to your + * application (read on...). + * + * The recommended option is to integrate libusb with your application main + * event loop. libusb exposes a set of file descriptors which allow you to do + * this. Your main loop is probably already calling poll() or select() or a + * variant on a set of file descriptors for other event sources (e.g. keyboard + * button presses, mouse movements, network sockets, etc). You then add + * libusb's file descriptors to your poll()/select() calls, and when activity + * is detected on such descriptors you know it is time to call + * libusb_handle_events(). + * + * There is one final event handling complication. libusb supports + * asynchronous transfers which time out after a specified time period, and + * this requires that libusb is called into at or after the timeout so that + * the timeout can be handled. So, in addition to considering libusb's file + * descriptors in your main event loop, you must also consider that libusb + * sometimes needs to be called into at fixed points in time even when there + * is no file descriptor activity. + * + * For the details on retrieving the set of file descriptors and determining + * the next timeout, see the \ref poll "polling and timing" API documentation. + */ + +/** + * @defgroup poll Polling and timing + * + * This page documents libusb's functions for polling events and timing. + * These functions are only necessary for users of the + * \ref asyncio "asynchronous API". If you are only using the simpler + * \ref syncio "synchronous API" then you do not need to ever call these + * functions. + * + * The justification for the functionality described here has already been + * discussed in the \ref asyncevent "event handling" section of the + * asynchronous API documentation. In summary, libusb does not create internal + * threads for event processing and hence relies on your application calling + * into libusb at certain points in time so that pending events can be handled. + * In order to know precisely when libusb needs to be called into, libusb + * offers you a set of pollable file descriptors and information about when + * the next timeout expires. + * + * If you are using the asynchronous I/O API, you must take one of the two + * following options, otherwise your I/O will not complete. + * + * \section pollsimple The simple option + * + * If your application revolves solely around libusb and does not need to + * handle other event sources, you can have a program structure as follows: +\code +// initialize libusb +// find and open device +// maybe fire off some initial async I/O + +while (user_has_not_requested_exit) + libusb_handle_events(ctx); + +// clean up and exit +\endcode + * + * With such a simple main loop, you do not have to worry about managing + * sets of file descriptors or handling timeouts. libusb_handle_events() will + * handle those details internally. + * + * \section pollmain The more advanced option + * + * \note This functionality is currently only available on Unix-like platforms. + * On Windows, libusb_get_pollfds() simply returns NULL. Exposing event sources + * on Windows will require some further thought and design. + * + * In more advanced applications, you will already have a main loop which + * is monitoring other event sources: network sockets, X11 events, mouse + * movements, etc. Through exposing a set of file descriptors, libusb is + * designed to cleanly integrate into such main loops. + * + * In addition to polling file descriptors for the other event sources, you + * take a set of file descriptors from libusb and monitor those too. When you + * detect activity on libusb's file descriptors, you call + * libusb_handle_events_timeout() in non-blocking mode. + * + * What's more, libusb may also need to handle events at specific moments in + * time. No file descriptor activity is generated at these times, so your + * own application needs to be continually aware of when the next one of these + * moments occurs (through calling libusb_get_next_timeout()), and then it + * needs to call libusb_handle_events_timeout() in non-blocking mode when + * these moments occur. This means that you need to adjust your + * poll()/select() timeout accordingly. + * + * libusb provides you with a set of file descriptors to poll and expects you + * to poll all of them, treating them as a single entity. The meaning of each + * file descriptor in the set is an internal implementation detail, + * platform-dependent and may vary from release to release. Don't try and + * interpret the meaning of the file descriptors, just do as libusb indicates, + * polling all of them at once. + * + * In pseudo-code, you want something that looks like: +\code +// initialise libusb + +libusb_get_pollfds(ctx) +while (user has not requested application exit) { + libusb_get_next_timeout(ctx); + poll(on libusb file descriptors plus any other event sources of interest, + using a timeout no larger than the value libusb just suggested) + if (poll() indicated activity on libusb file descriptors) + libusb_handle_events_timeout(ctx, &zero_tv); + if (time has elapsed to or beyond the libusb timeout) + libusb_handle_events_timeout(ctx, &zero_tv); + // handle events from other sources here +} + +// clean up and exit +\endcode + * + * \subsection polltime Notes on time-based events + * + * The above complication with having to track time and call into libusb at + * specific moments is a bit of a headache. For maximum compatibility, you do + * need to write your main loop as above, but you may decide that you can + * restrict the supported platforms of your application and get away with + * a more simplistic scheme. + * + * These time-based event complications are \b not required on the following + * platforms: + * - Darwin + * - Linux, provided that the following version requirements are satisfied: + * - Linux v2.6.27 or newer, compiled with timerfd support + * - glibc v2.9 or newer + * - libusb v1.0.5 or newer + * + * Under these configurations, libusb_get_next_timeout() will \em always return + * 0, so your main loop can be simplified to: +\code +// initialise libusb + +libusb_get_pollfds(ctx) +while (user has not requested application exit) { + poll(on libusb file descriptors plus any other event sources of interest, + using any timeout that you like) + if (poll() indicated activity on libusb file descriptors) + libusb_handle_events_timeout(ctx, &zero_tv); + // handle events from other sources here +} + +// clean up and exit +\endcode + * + * Do remember that if you simplify your main loop to the above, you will + * lose compatibility with some platforms (including legacy Linux platforms, + * and <em>any future platforms supported by libusb which may have time-based + * event requirements</em>). The resultant problems will likely appear as + * strange bugs in your application. + * + * You can use the libusb_pollfds_handle_timeouts() function to do a runtime + * check to see if it is safe to ignore the time-based event complications. + * If your application has taken the shortcut of ignoring libusb's next timeout + * in your main loop, then you are advised to check the return value of + * libusb_pollfds_handle_timeouts() during application startup, and to abort + * if the platform does suffer from these timing complications. + * + * \subsection fdsetchange Changes in the file descriptor set + * + * The set of file descriptors that libusb uses as event sources may change + * during the life of your application. Rather than having to repeatedly + * call libusb_get_pollfds(), you can set up notification functions for when + * the file descriptor set changes using libusb_set_pollfd_notifiers(). + * + * \subsection mtissues Multi-threaded considerations + * + * Unfortunately, the situation is complicated further when multiple threads + * come into play. If two threads are monitoring the same file descriptors, + * the fact that only one thread will be woken up when an event occurs causes + * some headaches. + * + * The events lock, event waiters lock, and libusb_handle_events_locked() + * entities are added to solve these problems. You do not need to be concerned + * with these entities otherwise. + * + * See the extra documentation: \ref mtasync + */ + +/** \page mtasync Multi-threaded applications and asynchronous I/O + * + * libusb is a thread-safe library, but extra considerations must be applied + * to applications which interact with libusb from multiple threads. + * + * The underlying issue that must be addressed is that all libusb I/O + * revolves around monitoring file descriptors through the poll()/select() + * system calls. This is directly exposed at the + * \ref asyncio "asynchronous interface" but it is important to note that the + * \ref syncio "synchronous interface" is implemented on top of the + * asynchonrous interface, therefore the same considerations apply. + * + * The issue is that if two or more threads are concurrently calling poll() + * or select() on libusb's file descriptors then only one of those threads + * will be woken up when an event arrives. The others will be completely + * oblivious that anything has happened. + * + * Consider the following pseudo-code, which submits an asynchronous transfer + * then waits for its completion. This style is one way you could implement a + * synchronous interface on top of the asynchronous interface (and libusb + * does something similar, albeit more advanced due to the complications + * explained on this page). + * +\code +void cb(struct libusb_transfer *transfer) +{ + int *completed = transfer->user_data; + *completed = 1; +} + +void myfunc() { + struct libusb_transfer *transfer; + unsigned char buffer[LIBUSB_CONTROL_SETUP_SIZE]; + int completed = 0; + + transfer = libusb_alloc_transfer(0); + libusb_fill_control_setup(buffer, + LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT, 0x04, 0x01, 0, 0); + libusb_fill_control_transfer(transfer, dev, buffer, cb, &completed, 1000); + libusb_submit_transfer(transfer); + + while (!completed) { + poll(libusb file descriptors, 120*1000); + if (poll indicates activity) + libusb_handle_events_timeout(ctx, &zero_tv); + } + printf("completed!"); + // other code here +} +\endcode + * + * Here we are <em>serializing</em> completion of an asynchronous event + * against a condition - the condition being completion of a specific transfer. + * The poll() loop has a long timeout to minimize CPU usage during situations + * when nothing is happening (it could reasonably be unlimited). + * + * If this is the only thread that is polling libusb's file descriptors, there + * is no problem: there is no danger that another thread will swallow up the + * event that we are interested in. On the other hand, if there is another + * thread polling the same descriptors, there is a chance that it will receive + * the event that we were interested in. In this situation, <tt>myfunc()</tt> + * will only realise that the transfer has completed on the next iteration of + * the loop, <em>up to 120 seconds later.</em> Clearly a two-minute delay is + * undesirable, and don't even think about using short timeouts to circumvent + * this issue! + * + * The solution here is to ensure that no two threads are ever polling the + * file descriptors at the same time. A naive implementation of this would + * impact the capabilities of the library, so libusb offers the scheme + * documented below to ensure no loss of functionality. + * + * Before we go any further, it is worth mentioning that all libusb-wrapped + * event handling procedures fully adhere to the scheme documented below. + * This includes libusb_handle_events() and its variants, and all the + * synchronous I/O functions - libusb hides this headache from you. + * + * \section Using libusb_handle_events() from multiple threads + * + * Even when only using libusb_handle_events() and synchronous I/O functions, + * you can still have a race condition. You might be tempted to solve the + * above with libusb_handle_events() like so: + * +\code + libusb_submit_transfer(transfer); + + while (!completed) { + libusb_handle_events(ctx); + } + printf("completed!"); +\endcode + * + * This however has a race between the checking of completed and + * libusb_handle_events() acquiring the events lock, so another thread + * could have completed the transfer, resulting in this thread hanging + * until either a timeout or another event occurs. See also commit + * 6696512aade99bb15d6792af90ae329af270eba6 which fixes this in the + * synchronous API implementation of libusb. + * + * Fixing this race requires checking the variable completed only after + * taking the event lock, which defeats the concept of just calling + * libusb_handle_events() without worrying about locking. This is why + * libusb-1.0.9 introduces the new libusb_handle_events_timeout_completed() + * and libusb_handle_events_completed() functions, which handles doing the + * completion check for you after they have acquired the lock: + * +\code + libusb_submit_transfer(transfer); + + while (!completed) { + libusb_handle_events_completed(ctx, &completed); + } + printf("completed!"); +\endcode + * + * This nicely fixes the race in our example. Note that if all you want to + * do is submit a single transfer and wait for its completion, then using + * one of the synchronous I/O functions is much easier. + * + * \section eventlock The events lock + * + * The problem is when we consider the fact that libusb exposes file + * descriptors to allow for you to integrate asynchronous USB I/O into + * existing main loops, effectively allowing you to do some work behind + * libusb's back. If you do take libusb's file descriptors and pass them to + * poll()/select() yourself, you need to be aware of the associated issues. + * + * The first concept to be introduced is the events lock. The events lock + * is used to serialize threads that want to handle events, such that only + * one thread is handling events at any one time. + * + * You must take the events lock before polling libusb file descriptors, + * using libusb_lock_events(). You must release the lock as soon as you have + * aborted your poll()/select() loop, using libusb_unlock_events(). + * + * \section threadwait Letting other threads do the work for you + * + * Although the events lock is a critical part of the solution, it is not + * enough on it's own. You might wonder if the following is sufficient... +\code + libusb_lock_events(ctx); + while (!completed) { + poll(libusb file descriptors, 120*1000); + if (poll indicates activity) + libusb_handle_events_timeout(ctx, &zero_tv); + } + libusb_unlock_events(ctx); +\endcode + * ...and the answer is that it is not. This is because the transfer in the + * code shown above may take a long time (say 30 seconds) to complete, and + * the lock is not released until the transfer is completed. + * + * Another thread with similar code that wants to do event handling may be + * working with a transfer that completes after a few milliseconds. Despite + * having such a quick completion time, the other thread cannot check that + * status of its transfer until the code above has finished (30 seconds later) + * due to contention on the lock. + * + * To solve this, libusb offers you a mechanism to determine when another + * thread is handling events. It also offers a mechanism to block your thread + * until the event handling thread has completed an event (and this mechanism + * does not involve polling of file descriptors). + * + * After determining that another thread is currently handling events, you + * obtain the <em>event waiters</em> lock using libusb_lock_event_waiters(). + * You then re-check that some other thread is still handling events, and if + * so, you call libusb_wait_for_event(). + * + * libusb_wait_for_event() puts your application to sleep until an event + * occurs, or until a thread releases the events lock. When either of these + * things happen, your thread is woken up, and should re-check the condition + * it was waiting on. It should also re-check that another thread is handling + * events, and if not, it should start handling events itself. + * + * This looks like the following, as pseudo-code: +\code +retry: +if (libusb_try_lock_events(ctx) == 0) { + // we obtained the event lock: do our own event handling + while (!completed) { + if (!libusb_event_handling_ok(ctx)) { + libusb_unlock_events(ctx); + goto retry; + } + poll(libusb file descriptors, 120*1000); + if (poll indicates activity) + libusb_handle_events_locked(ctx, 0); + } + libusb_unlock_events(ctx); +} else { + // another thread is doing event handling. wait for it to signal us that + // an event has completed + libusb_lock_event_waiters(ctx); + + while (!completed) { + // now that we have the event waiters lock, double check that another + // thread is still handling events for us. (it may have ceased handling + // events in the time it took us to reach this point) + if (!libusb_event_handler_active(ctx)) { + // whoever was handling events is no longer doing so, try again + libusb_unlock_event_waiters(ctx); + goto retry; + } + + libusb_wait_for_event(ctx, NULL); + } + libusb_unlock_event_waiters(ctx); +} +printf("completed!\n"); +\endcode + * + * A naive look at the above code may suggest that this can only support + * one event waiter (hence a total of 2 competing threads, the other doing + * event handling), because the event waiter seems to have taken the event + * waiters lock while waiting for an event. However, the system does support + * multiple event waiters, because libusb_wait_for_event() actually drops + * the lock while waiting, and reaquires it before continuing. + * + * We have now implemented code which can dynamically handle situations where + * nobody is handling events (so we should do it ourselves), and it can also + * handle situations where another thread is doing event handling (so we can + * piggyback onto them). It is also equipped to handle a combination of + * the two, for example, another thread is doing event handling, but for + * whatever reason it stops doing so before our condition is met, so we take + * over the event handling. + * + * Four functions were introduced in the above pseudo-code. Their importance + * should be apparent from the code shown above. + * -# libusb_try_lock_events() is a non-blocking function which attempts + * to acquire the events lock but returns a failure code if it is contended. + * -# libusb_event_handling_ok() checks that libusb is still happy for your + * thread to be performing event handling. Sometimes, libusb needs to + * interrupt the event handler, and this is how you can check if you have + * been interrupted. If this function returns 0, the correct behaviour is + * for you to give up the event handling lock, and then to repeat the cycle. + * The following libusb_try_lock_events() will fail, so you will become an + * events waiter. For more information on this, read \ref fullstory below. + * -# libusb_handle_events_locked() is a variant of + * libusb_handle_events_timeout() that you can call while holding the + * events lock. libusb_handle_events_timeout() itself implements similar + * logic to the above, so be sure not to call it when you are + * "working behind libusb's back", as is the case here. + * -# libusb_event_handler_active() determines if someone is currently + * holding the events lock + * + * You might be wondering why there is no function to wake up all threads + * blocked on libusb_wait_for_event(). This is because libusb can do this + * internally: it will wake up all such threads when someone calls + * libusb_unlock_events() or when a transfer completes (at the point after its + * callback has returned). + * + * \subsection fullstory The full story + * + * The above explanation should be enough to get you going, but if you're + * really thinking through the issues then you may be left with some more + * questions regarding libusb's internals. If you're curious, read on, and if + * not, skip to the next section to avoid confusing yourself! + * + * The immediate question that may spring to mind is: what if one thread + * modifies the set of file descriptors that need to be polled while another + * thread is doing event handling? + * + * There are 2 situations in which this may happen. + * -# libusb_open() will add another file descriptor to the poll set, + * therefore it is desirable to interrupt the event handler so that it + * restarts, picking up the new descriptor. + * -# libusb_close() will remove a file descriptor from the poll set. There + * are all kinds of race conditions that could arise here, so it is + * important that nobody is doing event handling at this time. + * + * libusb handles these issues internally, so application developers do not + * have to stop their event handlers while opening/closing devices. Here's how + * it works, focusing on the libusb_close() situation first: + * + * -# During initialization, libusb opens an internal pipe, and it adds the read + * end of this pipe to the set of file descriptors to be polled. + * -# During libusb_close(), libusb writes some dummy data on this control pipe. + * This immediately interrupts the event handler. libusb also records + * internally that it is trying to interrupt event handlers for this + * high-priority event. + * -# At this point, some of the functions described above start behaving + * differently: + * - libusb_event_handling_ok() starts returning 1, indicating that it is NOT + * OK for event handling to continue. + * - libusb_try_lock_events() starts returning 1, indicating that another + * thread holds the event handling lock, even if the lock is uncontended. + * - libusb_event_handler_active() starts returning 1, indicating that + * another thread is doing event handling, even if that is not true. + * -# The above changes in behaviour result in the event handler stopping and + * giving up the events lock very quickly, giving the high-priority + * libusb_close() operation a "free ride" to acquire the events lock. All + * threads that are competing to do event handling become event waiters. + * -# With the events lock held inside libusb_close(), libusb can safely remove + * a file descriptor from the poll set, in the safety of knowledge that + * nobody is polling those descriptors or trying to access the poll set. + * -# After obtaining the events lock, the close operation completes very + * quickly (usually a matter of milliseconds) and then immediately releases + * the events lock. + * -# At the same time, the behaviour of libusb_event_handling_ok() and friends + * reverts to the original, documented behaviour. + * -# The release of the events lock causes the threads that are waiting for + * events to be woken up and to start competing to become event handlers + * again. One of them will succeed; it will then re-obtain the list of poll + * descriptors, and USB I/O will then continue as normal. + * + * libusb_open() is similar, and is actually a more simplistic case. Upon a + * call to libusb_open(): + * + * -# The device is opened and a file descriptor is added to the poll set. + * -# libusb sends some dummy data on the control pipe, and records that it + * is trying to modify the poll descriptor set. + * -# The event handler is interrupted, and the same behaviour change as for + * libusb_close() takes effect, causing all event handling threads to become + * event waiters. + * -# The libusb_open() implementation takes its free ride to the events lock. + * -# Happy that it has successfully paused the events handler, libusb_open() + * releases the events lock. + * -# The event waiter threads are all woken up and compete to become event + * handlers again. The one that succeeds will obtain the list of poll + * descriptors again, which will include the addition of the new device. + * + * \subsection concl Closing remarks + * + * The above may seem a little complicated, but hopefully I have made it clear + * why such complications are necessary. Also, do not forget that this only + * applies to applications that take libusb's file descriptors and integrate + * them into their own polling loops. + * + * You may decide that it is OK for your multi-threaded application to ignore + * some of the rules and locks detailed above, because you don't think that + * two threads can ever be polling the descriptors at the same time. If that + * is the case, then that's good news for you because you don't have to worry. + * But be careful here; remember that the synchronous I/O functions do event + * handling internally. If you have one thread doing event handling in a loop + * (without implementing the rules and locking semantics documented above) + * and another trying to send a synchronous USB transfer, you will end up with + * two threads monitoring the same descriptors, and the above-described + * undesirable behaviour occuring. The solution is for your polling thread to + * play by the rules; the synchronous I/O functions do so, and this will result + * in them getting along in perfect harmony. + * + * If you do have a dedicated thread doing event handling, it is perfectly + * legal for it to take the event handling lock for long periods of time. Any + * synchronous I/O functions you call from other threads will transparently + * fall back to the "event waiters" mechanism detailed above. The only + * consideration that your event handling thread must apply is the one related + * to libusb_event_handling_ok(): you must call this before every poll(), and + * give up the events lock if instructed. + */ + +int usbi_io_init(struct libusb_context *ctx) +{ + int r; + + usbi_mutex_init(&ctx->flying_transfers_lock, NULL); + usbi_mutex_init(&ctx->pollfds_lock, NULL); + usbi_mutex_init(&ctx->pollfd_modify_lock, NULL); + usbi_mutex_init_recursive(&ctx->events_lock, NULL); + usbi_mutex_init(&ctx->event_waiters_lock, NULL); + usbi_cond_init(&ctx->event_waiters_cond, NULL); + list_init(&ctx->flying_transfers); + list_init(&ctx->pollfds); + + /* FIXME should use an eventfd on kernels that support it */ + r = usbi_pipe(ctx->ctrl_pipe); + if (r < 0) { + r = LIBUSB_ERROR_OTHER; + goto err; + } + + r = usbi_add_pollfd(ctx, ctx->ctrl_pipe[0], POLLIN); + if (r < 0) + goto err_close_pipe; + +#ifdef USBI_TIMERFD_AVAILABLE + ctx->timerfd = timerfd_create(usbi_backend->get_timerfd_clockid(), + TFD_NONBLOCK); + if (ctx->timerfd >= 0) { + usbi_dbg("using timerfd for timeouts"); + r = usbi_add_pollfd(ctx, ctx->timerfd, POLLIN); + if (r < 0) { + usbi_remove_pollfd(ctx, ctx->ctrl_pipe[0]); + close(ctx->timerfd); + goto err_close_pipe; + } + } else { + usbi_dbg("timerfd not available (code %d error %d)", ctx->timerfd, errno); + ctx->timerfd = -1; + } +#endif + + return 0; + +err_close_pipe: + usbi_close(ctx->ctrl_pipe[0]); + usbi_close(ctx->ctrl_pipe[1]); +err: + usbi_mutex_destroy(&ctx->flying_transfers_lock); + usbi_mutex_destroy(&ctx->pollfds_lock); + usbi_mutex_destroy(&ctx->pollfd_modify_lock); + usbi_mutex_destroy(&ctx->events_lock); + usbi_mutex_destroy(&ctx->event_waiters_lock); + usbi_cond_destroy(&ctx->event_waiters_cond); + return r; +} + +void usbi_io_exit(struct libusb_context *ctx) +{ + usbi_remove_pollfd(ctx, ctx->ctrl_pipe[0]); + usbi_close(ctx->ctrl_pipe[0]); + usbi_close(ctx->ctrl_pipe[1]); +#ifdef USBI_TIMERFD_AVAILABLE + if (usbi_using_timerfd(ctx)) { + usbi_remove_pollfd(ctx, ctx->timerfd); + close(ctx->timerfd); + } +#endif + usbi_mutex_destroy(&ctx->flying_transfers_lock); + usbi_mutex_destroy(&ctx->pollfds_lock); + usbi_mutex_destroy(&ctx->pollfd_modify_lock); + usbi_mutex_destroy(&ctx->events_lock); + usbi_mutex_destroy(&ctx->event_waiters_lock); + usbi_cond_destroy(&ctx->event_waiters_cond); +} + +static int calculate_timeout(struct usbi_transfer *transfer) +{ + int r; + struct timespec current_time; + unsigned int timeout = + USBI_TRANSFER_TO_LIBUSB_TRANSFER(transfer)->timeout; + + if (!timeout) + return 0; + + r = usbi_backend->clock_gettime(USBI_CLOCK_MONOTONIC, ¤t_time); + if (r < 0) { + usbi_err(ITRANSFER_CTX(transfer), + "failed to read monotonic clock, errno=%d", errno); + return r; + } + + current_time.tv_sec += timeout / 1000; + current_time.tv_nsec += (timeout % 1000) * 1000000; + + if (current_time.tv_nsec > 1000000000) { + current_time.tv_nsec -= 1000000000; + current_time.tv_sec++; + } + + TIMESPEC_TO_TIMEVAL(&transfer->timeout, ¤t_time); + return 0; +} + +/* add a transfer to the (timeout-sorted) active transfers list. + * returns 1 if the transfer has a timeout and it is the timeout next to + * expire */ +static int add_to_flying_list(struct usbi_transfer *transfer) +{ + struct usbi_transfer *cur; + struct timeval *timeout = &transfer->timeout; + struct libusb_context *ctx = ITRANSFER_CTX(transfer); + int r = 0; + int first = 1; + + usbi_mutex_lock(&ctx->flying_transfers_lock); + + /* if we have no other flying transfers, start the list with this one */ + if (list_empty(&ctx->flying_transfers)) { + list_add(&transfer->list, &ctx->flying_transfers); + if (timerisset(timeout)) + r = 1; + goto out; + } + + /* if we have infinite timeout, append to end of list */ + if (!timerisset(timeout)) { + list_add_tail(&transfer->list, &ctx->flying_transfers); + goto out; + } + + /* otherwise, find appropriate place in list */ + list_for_each_entry(cur, &ctx->flying_transfers, list, struct usbi_transfer) { + /* find first timeout that occurs after the transfer in question */ + struct timeval *cur_tv = &cur->timeout; + + if (!timerisset(cur_tv) || (cur_tv->tv_sec > timeout->tv_sec) || + (cur_tv->tv_sec == timeout->tv_sec && + cur_tv->tv_usec > timeout->tv_usec)) { + list_add_tail(&transfer->list, &cur->list); + r = first; + goto out; + } + first = 0; + } + + /* otherwise we need to be inserted at the end */ + list_add_tail(&transfer->list, &ctx->flying_transfers); +out: + usbi_mutex_unlock(&ctx->flying_transfers_lock); + return r; +} + +/** \ingroup asyncio + * Allocate a libusb transfer with a specified number of isochronous packet + * descriptors. The returned transfer is pre-initialized for you. When the new + * transfer is no longer needed, it should be freed with + * libusb_free_transfer(). + * + * Transfers intended for non-isochronous endpoints (e.g. control, bulk, + * interrupt) should specify an iso_packets count of zero. + * + * For transfers intended for isochronous endpoints, specify an appropriate + * number of packet descriptors to be allocated as part of the transfer. + * The returned transfer is not specially initialized for isochronous I/O; + * you are still required to set the + * \ref libusb_transfer::num_iso_packets "num_iso_packets" and + * \ref libusb_transfer::type "type" fields accordingly. + * + * It is safe to allocate a transfer with some isochronous packets and then + * use it on a non-isochronous endpoint. If you do this, ensure that at time + * of submission, num_iso_packets is 0 and that type is set appropriately. + * + * \param iso_packets number of isochronous packet descriptors to allocate + * \returns a newly allocated transfer, or NULL on error + */ +DEFAULT_VISIBILITY +struct libusb_transfer * LIBUSB_CALL libusb_alloc_transfer( + int iso_packets) +{ + size_t os_alloc_size = usbi_backend->transfer_priv_size + + (usbi_backend->add_iso_packet_size * iso_packets); + size_t alloc_size = sizeof(struct usbi_transfer) + + sizeof(struct libusb_transfer) + + (sizeof(struct libusb_iso_packet_descriptor) * iso_packets) + + os_alloc_size; + struct usbi_transfer *itransfer = malloc(alloc_size); + if (!itransfer) + return NULL; + + memset(itransfer, 0, alloc_size); + itransfer->num_iso_packets = iso_packets; + usbi_mutex_init(&itransfer->lock, NULL); + return USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); +} + +/** \ingroup asyncio + * Free a transfer structure. This should be called for all transfers + * allocated with libusb_alloc_transfer(). + * + * If the \ref libusb_transfer_flags::LIBUSB_TRANSFER_FREE_BUFFER + * "LIBUSB_TRANSFER_FREE_BUFFER" flag is set and the transfer buffer is + * non-NULL, this function will also free the transfer buffer using the + * standard system memory allocator (e.g. free()). + * + * It is legal to call this function with a NULL transfer. In this case, + * the function will simply return safely. + * + * It is not legal to free an active transfer (one which has been submitted + * and has not yet completed). + * + * \param transfer the transfer to free + */ +void API_EXPORTED libusb_free_transfer(struct libusb_transfer *transfer) +{ + struct usbi_transfer *itransfer; + if (!transfer) + return; + + if (transfer->flags & LIBUSB_TRANSFER_FREE_BUFFER && transfer->buffer) + free(transfer->buffer); + + itransfer = LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer); + usbi_mutex_destroy(&itransfer->lock); + free(itransfer); +} + +/** \ingroup asyncio + * Submit a transfer. This function will fire off the USB transfer and then + * return immediately. + * + * \param transfer the transfer to submit + * \returns 0 on success + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns LIBUSB_ERROR_BUSY if the transfer has already been submitted. + * \returns LIBUSB_ERROR_NOT_SUPPORTED if the transfer flags are not supported + * by the operating system. + * \returns another LIBUSB_ERROR code on other failure + */ +int API_EXPORTED libusb_submit_transfer(struct libusb_transfer *transfer) +{ + struct libusb_context *ctx = TRANSFER_CTX(transfer); + struct usbi_transfer *itransfer = + LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer); + int r; + int first; + + usbi_mutex_lock(&itransfer->lock); + itransfer->transferred = 0; + itransfer->flags = 0; + r = calculate_timeout(itransfer); + if (r < 0) { + r = LIBUSB_ERROR_OTHER; + goto out; + } + + first = add_to_flying_list(itransfer); + r = usbi_backend->submit_transfer(itransfer); + if (r) { + usbi_mutex_lock(&ctx->flying_transfers_lock); + list_del(&itransfer->list); + usbi_mutex_unlock(&ctx->flying_transfers_lock); + } +#ifdef USBI_TIMERFD_AVAILABLE + else if (first && usbi_using_timerfd(ctx)) { + /* if this transfer has the lowest timeout of all active transfers, + * rearm the timerfd with this transfer's timeout */ + const struct itimerspec it = { {0, 0}, + { itransfer->timeout.tv_sec, itransfer->timeout.tv_usec * 1000 } }; + usbi_dbg("arm timerfd for timeout in %dms (first in line)", transfer->timeout); + r = timerfd_settime(ctx->timerfd, TFD_TIMER_ABSTIME, &it, NULL); + if (r < 0) + r = LIBUSB_ERROR_OTHER; + } +#else + (void)first; +#endif + +out: + usbi_mutex_unlock(&itransfer->lock); + return r; +} + +/** \ingroup asyncio + * Asynchronously cancel a previously submitted transfer. + * This function returns immediately, but this does not indicate cancellation + * is complete. Your callback function will be invoked at some later time + * with a transfer status of + * \ref libusb_transfer_status::LIBUSB_TRANSFER_CANCELLED + * "LIBUSB_TRANSFER_CANCELLED." + * + * \param transfer the transfer to cancel + * \returns 0 on success + * \returns LIBUSB_ERROR_NOT_FOUND if the transfer is already complete or + * cancelled. + * \returns a LIBUSB_ERROR code on failure + */ +int API_EXPORTED libusb_cancel_transfer(struct libusb_transfer *transfer) +{ + struct usbi_transfer *itransfer = + LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer); + int r; + + usbi_dbg(""); + usbi_mutex_lock(&itransfer->lock); + r = usbi_backend->cancel_transfer(itransfer); + if (r < 0) { + if (r != LIBUSB_ERROR_NOT_FOUND) + usbi_err(TRANSFER_CTX(transfer), + "cancel transfer failed error %d", r); + else + usbi_dbg("cancel transfer failed error %d", r); + + if (r == LIBUSB_ERROR_NO_DEVICE) + itransfer->flags |= USBI_TRANSFER_DEVICE_DISAPPEARED; + } + + itransfer->flags |= USBI_TRANSFER_CANCELLING; + + usbi_mutex_unlock(&itransfer->lock); + return r; +} + +#ifdef USBI_TIMERFD_AVAILABLE +static int disarm_timerfd(struct libusb_context *ctx) +{ + const struct itimerspec disarm_timer = { { 0, 0 }, { 0, 0 } }; + int r; + + usbi_dbg(""); + r = timerfd_settime(ctx->timerfd, 0, &disarm_timer, NULL); + if (r < 0) + return LIBUSB_ERROR_OTHER; + else + return 0; +} + +/* iterates through the flying transfers, and rearms the timerfd based on the + * next upcoming timeout. + * must be called with flying_list locked. + * returns 0 if there was no timeout to arm, 1 if the next timeout was armed, + * or a LIBUSB_ERROR code on failure. + */ +static int arm_timerfd_for_next_timeout(struct libusb_context *ctx) +{ + struct usbi_transfer *transfer; + + list_for_each_entry(transfer, &ctx->flying_transfers, list, struct usbi_transfer) { + struct timeval *cur_tv = &transfer->timeout; + + /* if we've reached transfers of infinite timeout, then we have no + * arming to do */ + if (!timerisset(cur_tv)) + return 0; + + /* act on first transfer that is not already cancelled */ + if (!(transfer->flags & USBI_TRANSFER_TIMED_OUT)) { + int r; + const struct itimerspec it = { {0, 0}, + { cur_tv->tv_sec, cur_tv->tv_usec * 1000 } }; + usbi_dbg("next timeout originally %dms", USBI_TRANSFER_TO_LIBUSB_TRANSFER(transfer)->timeout); + r = timerfd_settime(ctx->timerfd, TFD_TIMER_ABSTIME, &it, NULL); + if (r < 0) + return LIBUSB_ERROR_OTHER; + return 1; + } + } + + return 0; +} +#else +static int disarm_timerfd(struct libusb_context *ctx) +{ + (void)ctx; + return 0; +} +static int arm_timerfd_for_next_timeout(struct libusb_context *ctx) +{ + (void)ctx; + return 0; +} +#endif + +/* Handle completion of a transfer (completion might be an error condition). + * This will invoke the user-supplied callback function, which may end up + * freeing the transfer. Therefore you cannot use the transfer structure + * after calling this function, and you should free all backend-specific + * data before calling it. + * Do not call this function with the usbi_transfer lock held. User-specified + * callback functions may attempt to directly resubmit the transfer, which + * will attempt to take the lock. */ +int usbi_handle_transfer_completion(struct usbi_transfer *itransfer, + enum libusb_transfer_status status) +{ + struct libusb_transfer *transfer = + USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct libusb_context *ctx = TRANSFER_CTX(transfer); + uint8_t flags; + int r = 0; + + /* FIXME: could be more intelligent with the timerfd here. we don't need + * to disarm the timerfd if there was no timer running, and we only need + * to rearm the timerfd if the transfer that expired was the one with + * the shortest timeout. */ + + usbi_mutex_lock(&ctx->flying_transfers_lock); + list_del(&itransfer->list); + if (usbi_using_timerfd(ctx)) + r = arm_timerfd_for_next_timeout(ctx); + usbi_mutex_unlock(&ctx->flying_transfers_lock); + + if (usbi_using_timerfd(ctx)) { + if (r < 0) + return r; + r = disarm_timerfd(ctx); + if (r < 0) + return r; + } + + if (status == LIBUSB_TRANSFER_COMPLETED + && transfer->flags & LIBUSB_TRANSFER_SHORT_NOT_OK) { + int rqlen = transfer->length; + if (transfer->type == LIBUSB_TRANSFER_TYPE_CONTROL) + rqlen -= LIBUSB_CONTROL_SETUP_SIZE; + if (rqlen != itransfer->transferred) { + usbi_dbg("interpreting short transfer as error"); + status = LIBUSB_TRANSFER_ERROR; + } + } + + flags = transfer->flags; + transfer->status = status; + transfer->actual_length = itransfer->transferred; + usbi_dbg("transfer %p has callback %p", transfer, transfer->callback); + if (transfer->callback) + transfer->callback(transfer); + /* transfer might have been freed by the above call, do not use from + * this point. */ + if (flags & LIBUSB_TRANSFER_FREE_TRANSFER) + libusb_free_transfer(transfer); + usbi_mutex_lock(&ctx->event_waiters_lock); + usbi_cond_broadcast(&ctx->event_waiters_cond); + usbi_mutex_unlock(&ctx->event_waiters_lock); + return 0; +} + +/* Similar to usbi_handle_transfer_completion() but exclusively for transfers + * that were asynchronously cancelled. The same concerns w.r.t. freeing of + * transfers exist here. + * Do not call this function with the usbi_transfer lock held. User-specified + * callback functions may attempt to directly resubmit the transfer, which + * will attempt to take the lock. */ +int usbi_handle_transfer_cancellation(struct usbi_transfer *transfer) +{ + /* if the URB was cancelled due to timeout, report timeout to the user */ + if (transfer->flags & USBI_TRANSFER_TIMED_OUT) { + usbi_dbg("detected timeout cancellation"); + return usbi_handle_transfer_completion(transfer, LIBUSB_TRANSFER_TIMED_OUT); + } + + /* otherwise its a normal async cancel */ + return usbi_handle_transfer_completion(transfer, LIBUSB_TRANSFER_CANCELLED); +} + +/** \ingroup poll + * Attempt to acquire the event handling lock. This lock is used to ensure that + * only one thread is monitoring libusb event sources at any one time. + * + * You only need to use this lock if you are developing an application + * which calls poll() or select() on libusb's file descriptors directly. + * If you stick to libusb's event handling loop functions (e.g. + * libusb_handle_events()) then you do not need to be concerned with this + * locking. + * + * While holding this lock, you are trusted to actually be handling events. + * If you are no longer handling events, you must call libusb_unlock_events() + * as soon as possible. + * + * \param ctx the context to operate on, or NULL for the default context + * \returns 0 if the lock was obtained successfully + * \returns 1 if the lock was not obtained (i.e. another thread holds the lock) + * \see \ref mtasync + */ +int API_EXPORTED libusb_try_lock_events(libusb_context *ctx) +{ + int r; + USBI_GET_CONTEXT(ctx); + + /* is someone else waiting to modify poll fds? if so, don't let this thread + * start event handling */ + usbi_mutex_lock(&ctx->pollfd_modify_lock); + r = ctx->pollfd_modify; + usbi_mutex_unlock(&ctx->pollfd_modify_lock); + if (r) { + usbi_dbg("someone else is modifying poll fds"); + return 1; + } + + r = usbi_mutex_trylock(&ctx->events_lock); + if (r) + return 1; + + ctx->event_handler_active = 1; + return 0; +} + +/** \ingroup poll + * Acquire the event handling lock, blocking until successful acquisition if + * it is contended. This lock is used to ensure that only one thread is + * monitoring libusb event sources at any one time. + * + * You only need to use this lock if you are developing an application + * which calls poll() or select() on libusb's file descriptors directly. + * If you stick to libusb's event handling loop functions (e.g. + * libusb_handle_events()) then you do not need to be concerned with this + * locking. + * + * While holding this lock, you are trusted to actually be handling events. + * If you are no longer handling events, you must call libusb_unlock_events() + * as soon as possible. + * + * \param ctx the context to operate on, or NULL for the default context + * \see \ref mtasync + */ +void API_EXPORTED libusb_lock_events(libusb_context *ctx) +{ + USBI_GET_CONTEXT(ctx); + usbi_mutex_lock(&ctx->events_lock); + ctx->event_handler_active = 1; +} + +/** \ingroup poll + * Release the lock previously acquired with libusb_try_lock_events() or + * libusb_lock_events(). Releasing this lock will wake up any threads blocked + * on libusb_wait_for_event(). + * + * \param ctx the context to operate on, or NULL for the default context + * \see \ref mtasync + */ +void API_EXPORTED libusb_unlock_events(libusb_context *ctx) +{ + USBI_GET_CONTEXT(ctx); + ctx->event_handler_active = 0; + usbi_mutex_unlock(&ctx->events_lock); + + /* FIXME: perhaps we should be a bit more efficient by not broadcasting + * the availability of the events lock when we are modifying pollfds + * (check ctx->pollfd_modify)? */ + usbi_mutex_lock(&ctx->event_waiters_lock); + usbi_cond_broadcast(&ctx->event_waiters_cond); + usbi_mutex_unlock(&ctx->event_waiters_lock); +} + +/** \ingroup poll + * Determine if it is still OK for this thread to be doing event handling. + * + * Sometimes, libusb needs to temporarily pause all event handlers, and this + * is the function you should use before polling file descriptors to see if + * this is the case. + * + * If this function instructs your thread to give up the events lock, you + * should just continue the usual logic that is documented in \ref mtasync. + * On the next iteration, your thread will fail to obtain the events lock, + * and will hence become an event waiter. + * + * This function should be called while the events lock is held: you don't + * need to worry about the results of this function if your thread is not + * the current event handler. + * + * \param ctx the context to operate on, or NULL for the default context + * \returns 1 if event handling can start or continue + * \returns 0 if this thread must give up the events lock + * \see \ref fullstory "Multi-threaded I/O: the full story" + */ +int API_EXPORTED libusb_event_handling_ok(libusb_context *ctx) +{ + int r; + USBI_GET_CONTEXT(ctx); + + /* is someone else waiting to modify poll fds? if so, don't let this thread + * continue event handling */ + usbi_mutex_lock(&ctx->pollfd_modify_lock); + r = ctx->pollfd_modify; + usbi_mutex_unlock(&ctx->pollfd_modify_lock); + if (r) { + usbi_dbg("someone else is modifying poll fds"); + return 0; + } + + return 1; +} + + +/** \ingroup poll + * Determine if an active thread is handling events (i.e. if anyone is holding + * the event handling lock). + * + * \param ctx the context to operate on, or NULL for the default context + * \returns 1 if a thread is handling events + * \returns 0 if there are no threads currently handling events + * \see \ref mtasync + */ +int API_EXPORTED libusb_event_handler_active(libusb_context *ctx) +{ + int r; + USBI_GET_CONTEXT(ctx); + + /* is someone else waiting to modify poll fds? if so, don't let this thread + * start event handling -- indicate that event handling is happening */ + usbi_mutex_lock(&ctx->pollfd_modify_lock); + r = ctx->pollfd_modify; + usbi_mutex_unlock(&ctx->pollfd_modify_lock); + if (r) { + usbi_dbg("someone else is modifying poll fds"); + return 1; + } + + return ctx->event_handler_active; +} + +/** \ingroup poll + * Acquire the event waiters lock. This lock is designed to be obtained under + * the situation where you want to be aware when events are completed, but + * some other thread is event handling so calling libusb_handle_events() is not + * allowed. + * + * You then obtain this lock, re-check that another thread is still handling + * events, then call libusb_wait_for_event(). + * + * You only need to use this lock if you are developing an application + * which calls poll() or select() on libusb's file descriptors directly, + * <b>and</b> may potentially be handling events from 2 threads simultaenously. + * If you stick to libusb's event handling loop functions (e.g. + * libusb_handle_events()) then you do not need to be concerned with this + * locking. + * + * \param ctx the context to operate on, or NULL for the default context + * \see \ref mtasync + */ +void API_EXPORTED libusb_lock_event_waiters(libusb_context *ctx) +{ + USBI_GET_CONTEXT(ctx); + usbi_mutex_lock(&ctx->event_waiters_lock); +} + +/** \ingroup poll + * Release the event waiters lock. + * \param ctx the context to operate on, or NULL for the default context + * \see \ref mtasync + */ +void API_EXPORTED libusb_unlock_event_waiters(libusb_context *ctx) +{ + USBI_GET_CONTEXT(ctx); + usbi_mutex_unlock(&ctx->event_waiters_lock); +} + +/** \ingroup poll + * Wait for another thread to signal completion of an event. Must be called + * with the event waiters lock held, see libusb_lock_event_waiters(). + * + * This function will block until any of the following conditions are met: + * -# The timeout expires + * -# A transfer completes + * -# A thread releases the event handling lock through libusb_unlock_events() + * + * Condition 1 is obvious. Condition 2 unblocks your thread <em>after</em> + * the callback for the transfer has completed. Condition 3 is important + * because it means that the thread that was previously handling events is no + * longer doing so, so if any events are to complete, another thread needs to + * step up and start event handling. + * + * This function releases the event waiters lock before putting your thread + * to sleep, and reacquires the lock as it is being woken up. + * + * \param ctx the context to operate on, or NULL for the default context + * \param tv maximum timeout for this blocking function. A NULL value + * indicates unlimited timeout. + * \returns 0 after a transfer completes or another thread stops event handling + * \returns 1 if the timeout expired + * \see \ref mtasync + */ +int API_EXPORTED libusb_wait_for_event(libusb_context *ctx, struct timeval *tv) +{ + struct timespec timeout; + int r; + + USBI_GET_CONTEXT(ctx); + if (tv == NULL) { + usbi_cond_wait(&ctx->event_waiters_cond, &ctx->event_waiters_lock); + return 0; + } + + r = usbi_backend->clock_gettime(USBI_CLOCK_REALTIME, &timeout); + if (r < 0) { + usbi_err(ctx, "failed to read realtime clock, error %d", errno); + return LIBUSB_ERROR_OTHER; + } + + timeout.tv_sec += tv->tv_sec; + timeout.tv_nsec += tv->tv_usec * 1000; + if (timeout.tv_nsec > 1000000000) { + timeout.tv_nsec -= 1000000000; + timeout.tv_sec++; + } + + r = usbi_cond_timedwait(&ctx->event_waiters_cond, + &ctx->event_waiters_lock, &timeout); + return (r == ETIMEDOUT); +} + +static void handle_timeout(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = + USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + int r; + + itransfer->flags |= USBI_TRANSFER_TIMED_OUT; + r = libusb_cancel_transfer(transfer); + if (r < 0) + usbi_warn(TRANSFER_CTX(transfer), + "async cancel failed %d errno=%d", r, errno); +} + +static int handle_timeouts_locked(struct libusb_context *ctx) +{ + int r; + struct timespec systime_ts; + struct timeval systime; + struct usbi_transfer *transfer; + + if (list_empty(&ctx->flying_transfers)) + return 0; + + /* get current time */ + r = usbi_backend->clock_gettime(USBI_CLOCK_MONOTONIC, &systime_ts); + if (r < 0) + return r; + + TIMESPEC_TO_TIMEVAL(&systime, &systime_ts); + + /* iterate through flying transfers list, finding all transfers that + * have expired timeouts */ + list_for_each_entry(transfer, &ctx->flying_transfers, list, struct usbi_transfer) { + struct timeval *cur_tv = &transfer->timeout; + + /* if we've reached transfers of infinite timeout, we're all done */ + if (!timerisset(cur_tv)) + return 0; + + /* ignore timeouts we've already handled */ + if (transfer->flags & (USBI_TRANSFER_TIMED_OUT | USBI_TRANSFER_OS_HANDLES_TIMEOUT)) + continue; + + /* if transfer has non-expired timeout, nothing more to do */ + if ((cur_tv->tv_sec > systime.tv_sec) || + (cur_tv->tv_sec == systime.tv_sec && + cur_tv->tv_usec > systime.tv_usec)) + return 0; + + /* otherwise, we've got an expired timeout to handle */ + handle_timeout(transfer); + } + return 0; +} + +static int handle_timeouts(struct libusb_context *ctx) +{ + int r; + USBI_GET_CONTEXT(ctx); + usbi_mutex_lock(&ctx->flying_transfers_lock); + r = handle_timeouts_locked(ctx); + usbi_mutex_unlock(&ctx->flying_transfers_lock); + return r; +} + +#ifdef USBI_TIMERFD_AVAILABLE +static int handle_timerfd_trigger(struct libusb_context *ctx) +{ + int r; + + r = disarm_timerfd(ctx); + if (r < 0) + return r; + + usbi_mutex_lock(&ctx->flying_transfers_lock); + + /* process the timeout that just happened */ + r = handle_timeouts_locked(ctx); + if (r < 0) + goto out; + + /* arm for next timeout*/ + r = arm_timerfd_for_next_timeout(ctx); + +out: + usbi_mutex_unlock(&ctx->flying_transfers_lock); + return r; +} +#endif + +/* do the actual event handling. assumes that no other thread is concurrently + * doing the same thing. */ +static int handle_events(struct libusb_context *ctx, struct timeval *tv) +{ + int r; + struct usbi_pollfd *ipollfd; + POLL_NFDS_TYPE nfds = 0; + struct pollfd *fds; + int i = -1; + int timeout_ms; + + usbi_mutex_lock(&ctx->pollfds_lock); + list_for_each_entry(ipollfd, &ctx->pollfds, list, struct usbi_pollfd) + nfds++; + + /* TODO: malloc when number of fd's changes, not on every poll */ + fds = malloc(sizeof(*fds) * nfds); + if (!fds) { + usbi_mutex_unlock(&ctx->pollfds_lock); + return LIBUSB_ERROR_NO_MEM; + } + + list_for_each_entry(ipollfd, &ctx->pollfds, list, struct usbi_pollfd) { + struct libusb_pollfd *pollfd = &ipollfd->pollfd; + int fd = pollfd->fd; + i++; + fds[i].fd = fd; + fds[i].events = pollfd->events; + fds[i].revents = 0; + } + usbi_mutex_unlock(&ctx->pollfds_lock); + + timeout_ms = (tv->tv_sec * 1000) + (tv->tv_usec / 1000); + + /* round up to next millisecond */ + if (tv->tv_usec % 1000) + timeout_ms++; + + usbi_dbg("poll() %d fds with timeout in %dms", nfds, timeout_ms); + r = usbi_poll(fds, nfds, timeout_ms); + usbi_dbg("poll() returned %d", r); + if (r == 0) { + free(fds); + return handle_timeouts(ctx); + } else if (r == -1 && errno == EINTR) { + free(fds); + return LIBUSB_ERROR_INTERRUPTED; + } else if (r < 0) { + free(fds); + usbi_err(ctx, "poll failed %d err=%d\n", r, errno); + return LIBUSB_ERROR_IO; + } + + /* fd[0] is always the ctrl pipe */ + if (fds[0].revents) { + /* another thread wanted to interrupt event handling, and it succeeded! + * handle any other events that cropped up at the same time, and + * simply return */ + usbi_dbg("caught a fish on the control pipe"); + + if (r == 1) { + r = 0; + goto handled; + } else { + /* prevent OS backend from trying to handle events on ctrl pipe */ + fds[0].revents = 0; + r--; + } + } + +#ifdef USBI_TIMERFD_AVAILABLE + /* on timerfd configurations, fds[1] is the timerfd */ + if (usbi_using_timerfd(ctx) && fds[1].revents) { + /* timerfd indicates that a timeout has expired */ + int ret; + usbi_dbg("timerfd triggered"); + + ret = handle_timerfd_trigger(ctx); + if (ret < 0) { + /* return error code */ + r = ret; + goto handled; + } else if (r == 1) { + /* no more active file descriptors, nothing more to do */ + r = 0; + goto handled; + } else { + /* more events pending... + * prevent OS backend from trying to handle events on timerfd */ + fds[1].revents = 0; + r--; + } + } +#endif + + r = usbi_backend->handle_events(ctx, fds, nfds, r); + if (r) + usbi_err(ctx, "backend handle_events failed with error %d", r); + +handled: + free(fds); + return r; +} + +/* returns the smallest of: + * 1. timeout of next URB + * 2. user-supplied timeout + * returns 1 if there is an already-expired timeout, otherwise returns 0 + * and populates out + */ +static int get_next_timeout(libusb_context *ctx, struct timeval *tv, + struct timeval *out) +{ + struct timeval timeout; + int r = libusb_get_next_timeout(ctx, &timeout); + if (r) { + /* timeout already expired? */ + if (!timerisset(&timeout)) + return 1; + + /* choose the smallest of next URB timeout or user specified timeout */ + if (timercmp(&timeout, tv, <)) + *out = timeout; + else + *out = *tv; + } else { + *out = *tv; + } + return 0; +} + +/** \ingroup poll + * Handle any pending events. + * + * libusb determines "pending events" by checking if any timeouts have expired + * and by checking the set of file descriptors for activity. + * + * If a zero timeval is passed, this function will handle any already-pending + * events and then immediately return in non-blocking style. + * + * If a non-zero timeval is passed and no events are currently pending, this + * function will block waiting for events to handle up until the specified + * timeout. If an event arrives or a signal is raised, this function will + * return early. + * + * If the parameter completed is not NULL then <em>after obtaining the event + * handling lock</em> this function will return immediately if the integer + * pointed to is not 0. This allows for race free waiting for the completion + * of a specific transfer. + * + * \param ctx the context to operate on, or NULL for the default context + * \param tv the maximum time to block waiting for events, or an all zero + * timeval struct for non-blocking mode + * \param completed pointer to completion integer to check, or NULL + * \returns 0 on success, or a LIBUSB_ERROR code on failure + * \see \ref mtasync + */ +int API_EXPORTED libusb_handle_events_timeout_completed(libusb_context *ctx, + struct timeval *tv, int *completed) +{ + int r; + struct timeval poll_timeout; + + USBI_GET_CONTEXT(ctx); + r = get_next_timeout(ctx, tv, &poll_timeout); + if (r) { + /* timeout already expired */ + return handle_timeouts(ctx); + } + +retry: + if (libusb_try_lock_events(ctx) == 0) { + if (completed == NULL || !*completed) { + /* we obtained the event lock: do our own event handling */ + usbi_dbg("doing our own event handling"); + r = handle_events(ctx, &poll_timeout); + } + libusb_unlock_events(ctx); + return r; + } + + /* another thread is doing event handling. wait for thread events that + * notify event completion. */ + libusb_lock_event_waiters(ctx); + + if (completed && *completed) + goto already_done; + + if (!libusb_event_handler_active(ctx)) { + /* we hit a race: whoever was event handling earlier finished in the + * time it took us to reach this point. try the cycle again. */ + libusb_unlock_event_waiters(ctx); + usbi_dbg("event handler was active but went away, retrying"); + goto retry; + } + + usbi_dbg("another thread is doing event handling"); + r = libusb_wait_for_event(ctx, &poll_timeout); + +already_done: + libusb_unlock_event_waiters(ctx); + + if (r < 0) + return r; + else if (r == 1) + return handle_timeouts(ctx); + else + return 0; +} + +/** \ingroup poll + * Handle any pending events + * + * Like libusb_handle_events_timeout_completed(), but without the completed + * parameter, calling this function is equivalent to calling + * libusb_handle_events_timeout_completed() with a NULL completed parameter. + * + * This function is kept primarily for backwards compatibility. + * All new code should call libusb_handle_events_completed() or + * libusb_handle_events_timeout_completed() to avoid race conditions. + * + * \param ctx the context to operate on, or NULL for the default context + * \param tv the maximum time to block waiting for events, or an all zero + * timeval struct for non-blocking mode + * \returns 0 on success, or a LIBUSB_ERROR code on failure + */ +int API_EXPORTED libusb_handle_events_timeout(libusb_context *ctx, + struct timeval *tv) +{ + return libusb_handle_events_timeout_completed(ctx, tv, NULL); +} + +/** \ingroup poll + * Handle any pending events in blocking mode. There is currently a timeout + * hardcoded at 60 seconds but we plan to make it unlimited in future. For + * finer control over whether this function is blocking or non-blocking, or + * for control over the timeout, use libusb_handle_events_timeout_completed() + * instead. + * + * This function is kept primarily for backwards compatibility. + * All new code should call libusb_handle_events_completed() or + * libusb_handle_events_timeout_completed() to avoid race conditions. + * + * \param ctx the context to operate on, or NULL for the default context + * \returns 0 on success, or a LIBUSB_ERROR code on failure + */ +int API_EXPORTED libusb_handle_events(libusb_context *ctx) +{ + struct timeval tv; + tv.tv_sec = 60; + tv.tv_usec = 0; + return libusb_handle_events_timeout_completed(ctx, &tv, NULL); +} + +/** \ingroup poll + * Handle any pending events in blocking mode. + * + * Like libusb_handle_events(), with the addition of a completed parameter + * to allow for race free waiting for the completion of a specific transfer. + * + * See libusb_handle_events_timeout_completed() for details on the completed + * parameter. + * + * \param ctx the context to operate on, or NULL for the default context + * \param completed pointer to completion integer to check, or NULL + * \returns 0 on success, or a LIBUSB_ERROR code on failure + * \see \ref mtasync + */ +int API_EXPORTED libusb_handle_events_completed(libusb_context *ctx, + int *completed) +{ + struct timeval tv; + tv.tv_sec = 60; + tv.tv_usec = 0; + return libusb_handle_events_timeout_completed(ctx, &tv, completed); +} + +/** \ingroup poll + * Handle any pending events by polling file descriptors, without checking if + * any other threads are already doing so. Must be called with the event lock + * held, see libusb_lock_events(). + * + * This function is designed to be called under the situation where you have + * taken the event lock and are calling poll()/select() directly on libusb's + * file descriptors (as opposed to using libusb_handle_events() or similar). + * You detect events on libusb's descriptors, so you then call this function + * with a zero timeout value (while still holding the event lock). + * + * \param ctx the context to operate on, or NULL for the default context + * \param tv the maximum time to block waiting for events, or zero for + * non-blocking mode + * \returns 0 on success, or a LIBUSB_ERROR code on failure + * \see \ref mtasync + */ +int API_EXPORTED libusb_handle_events_locked(libusb_context *ctx, + struct timeval *tv) +{ + int r; + struct timeval poll_timeout; + + USBI_GET_CONTEXT(ctx); + r = get_next_timeout(ctx, tv, &poll_timeout); + if (r) { + /* timeout already expired */ + return handle_timeouts(ctx); + } + + return handle_events(ctx, &poll_timeout); +} + +/** \ingroup poll + * Determines whether your application must apply special timing considerations + * when monitoring libusb's file descriptors. + * + * This function is only useful for applications which retrieve and poll + * libusb's file descriptors in their own main loop (\ref pollmain). + * + * Ordinarily, libusb's event handler needs to be called into at specific + * moments in time (in addition to times when there is activity on the file + * descriptor set). The usual approach is to use libusb_get_next_timeout() + * to learn about when the next timeout occurs, and to adjust your + * poll()/select() timeout accordingly so that you can make a call into the + * library at that time. + * + * Some platforms supported by libusb do not come with this baggage - any + * events relevant to timing will be represented by activity on the file + * descriptor set, and libusb_get_next_timeout() will always return 0. + * This function allows you to detect whether you are running on such a + * platform. + * + * Since v1.0.5. + * + * \param ctx the context to operate on, or NULL for the default context + * \returns 0 if you must call into libusb at times determined by + * libusb_get_next_timeout(), or 1 if all timeout events are handled internally + * or through regular activity on the file descriptors. + * \see \ref pollmain "Polling libusb file descriptors for event handling" + */ +int API_EXPORTED libusb_pollfds_handle_timeouts(libusb_context *ctx) +{ +#if defined(USBI_TIMERFD_AVAILABLE) + USBI_GET_CONTEXT(ctx); + return usbi_using_timerfd(ctx); +#else + (void)ctx; + return 0; +#endif +} + +/** \ingroup poll + * Determine the next internal timeout that libusb needs to handle. You only + * need to use this function if you are calling poll() or select() or similar + * on libusb's file descriptors yourself - you do not need to use it if you + * are calling libusb_handle_events() or a variant directly. + * + * You should call this function in your main loop in order to determine how + * long to wait for select() or poll() to return results. libusb needs to be + * called into at this timeout, so you should use it as an upper bound on + * your select() or poll() call. + * + * When the timeout has expired, call into libusb_handle_events_timeout() + * (perhaps in non-blocking mode) so that libusb can handle the timeout. + * + * This function may return 1 (success) and an all-zero timeval. If this is + * the case, it indicates that libusb has a timeout that has already expired + * so you should call libusb_handle_events_timeout() or similar immediately. + * A return code of 0 indicates that there are no pending timeouts. + * + * On some platforms, this function will always returns 0 (no pending + * timeouts). See \ref polltime. + * + * \param ctx the context to operate on, or NULL for the default context + * \param tv output location for a relative time against the current + * clock in which libusb must be called into in order to process timeout events + * \returns 0 if there are no pending timeouts, 1 if a timeout was returned, + * or LIBUSB_ERROR_OTHER on failure + */ +int API_EXPORTED libusb_get_next_timeout(libusb_context *ctx, + struct timeval *tv) +{ + struct usbi_transfer *transfer; + struct timespec cur_ts; + struct timeval cur_tv; + struct timeval *next_timeout; + int r; + int found = 0; + + USBI_GET_CONTEXT(ctx); + if (usbi_using_timerfd(ctx)) + return 0; + + usbi_mutex_lock(&ctx->flying_transfers_lock); + if (list_empty(&ctx->flying_transfers)) { + usbi_mutex_unlock(&ctx->flying_transfers_lock); + usbi_dbg("no URBs, no timeout!"); + return 0; + } + + /* find next transfer which hasn't already been processed as timed out */ + list_for_each_entry(transfer, &ctx->flying_transfers, list, struct usbi_transfer) { + if (transfer->flags & (USBI_TRANSFER_TIMED_OUT | USBI_TRANSFER_OS_HANDLES_TIMEOUT)) + continue; + + /* no timeout for this transfer? */ + if (!timerisset(&transfer->timeout)) + continue; + + found = 1; + break; + } + usbi_mutex_unlock(&ctx->flying_transfers_lock); + + if (!found) { + usbi_dbg("no URB with timeout or all handled by OS; no timeout!"); + return 0; + } + + next_timeout = &transfer->timeout; + + r = usbi_backend->clock_gettime(USBI_CLOCK_MONOTONIC, &cur_ts); + if (r < 0) { + usbi_err(ctx, "failed to read monotonic clock, errno=%d", errno); + return LIBUSB_ERROR_OTHER; + } + TIMESPEC_TO_TIMEVAL(&cur_tv, &cur_ts); + + if (!timercmp(&cur_tv, next_timeout, <)) { + usbi_dbg("first timeout already expired"); + timerclear(tv); + } else { + timersub(next_timeout, &cur_tv, tv); + usbi_dbg("next timeout in %d.%06ds", tv->tv_sec, tv->tv_usec); + } + + return 1; +} + +/** \ingroup poll + * Register notification functions for file descriptor additions/removals. + * These functions will be invoked for every new or removed file descriptor + * that libusb uses as an event source. + * + * To remove notifiers, pass NULL values for the function pointers. + * + * Note that file descriptors may have been added even before you register + * these notifiers (e.g. at libusb_init() time). + * + * Additionally, note that the removal notifier may be called during + * libusb_exit() (e.g. when it is closing file descriptors that were opened + * and added to the poll set at libusb_init() time). If you don't want this, + * remove the notifiers immediately before calling libusb_exit(). + * + * \param ctx the context to operate on, or NULL for the default context + * \param added_cb pointer to function for addition notifications + * \param removed_cb pointer to function for removal notifications + * \param user_data User data to be passed back to callbacks (useful for + * passing context information) + */ +void API_EXPORTED libusb_set_pollfd_notifiers(libusb_context *ctx, + libusb_pollfd_added_cb added_cb, libusb_pollfd_removed_cb removed_cb, + void *user_data) +{ + USBI_GET_CONTEXT(ctx); + ctx->fd_added_cb = added_cb; + ctx->fd_removed_cb = removed_cb; + ctx->fd_cb_user_data = user_data; +} + +/* Add a file descriptor to the list of file descriptors to be monitored. + * events should be specified as a bitmask of events passed to poll(), e.g. + * POLLIN and/or POLLOUT. */ +int usbi_add_pollfd(struct libusb_context *ctx, int fd, short events) +{ + struct usbi_pollfd *ipollfd = malloc(sizeof(*ipollfd)); + if (!ipollfd) + return LIBUSB_ERROR_NO_MEM; + + usbi_dbg("add fd %d events %d", fd, events); + ipollfd->pollfd.fd = fd; + ipollfd->pollfd.events = events; + usbi_mutex_lock(&ctx->pollfds_lock); + list_add_tail(&ipollfd->list, &ctx->pollfds); + usbi_mutex_unlock(&ctx->pollfds_lock); + + if (ctx->fd_added_cb) + ctx->fd_added_cb(fd, events, ctx->fd_cb_user_data); + return 0; +} + +/* Remove a file descriptor from the list of file descriptors to be polled. */ +void usbi_remove_pollfd(struct libusb_context *ctx, int fd) +{ + struct usbi_pollfd *ipollfd; + int found = 0; + + usbi_dbg("remove fd %d", fd); + usbi_mutex_lock(&ctx->pollfds_lock); + list_for_each_entry(ipollfd, &ctx->pollfds, list, struct usbi_pollfd) + if (ipollfd->pollfd.fd == fd) { + found = 1; + break; + } + + if (!found) { + usbi_dbg("couldn't find fd %d to remove", fd); + usbi_mutex_unlock(&ctx->pollfds_lock); + return; + } + + list_del(&ipollfd->list); + usbi_mutex_unlock(&ctx->pollfds_lock); + free(ipollfd); + if (ctx->fd_removed_cb) + ctx->fd_removed_cb(fd, ctx->fd_cb_user_data); +} + +/** \ingroup poll + * Retrieve a list of file descriptors that should be polled by your main loop + * as libusb event sources. + * + * The returned list is NULL-terminated and should be freed with free() when + * done. The actual list contents must not be touched. + * + * As file descriptors are a Unix-specific concept, this function is not + * available on Windows and will always return NULL. + * + * \param ctx the context to operate on, or NULL for the default context + * \returns a NULL-terminated list of libusb_pollfd structures + * \returns NULL on error + * \returns NULL on platforms where the functionality is not available + */ +DEFAULT_VISIBILITY +const struct libusb_pollfd ** LIBUSB_CALL libusb_get_pollfds( + libusb_context *ctx) +{ +#ifndef OS_WINDOWS + struct libusb_pollfd **ret = NULL; + struct usbi_pollfd *ipollfd; + size_t i = 0; + size_t cnt = 0; + USBI_GET_CONTEXT(ctx); + + usbi_mutex_lock(&ctx->pollfds_lock); + list_for_each_entry(ipollfd, &ctx->pollfds, list, struct usbi_pollfd) + cnt++; + + ret = calloc(cnt + 1, sizeof(struct libusb_pollfd *)); + if (!ret) + goto out; + + list_for_each_entry(ipollfd, &ctx->pollfds, list, struct usbi_pollfd) + ret[i++] = (struct libusb_pollfd *) ipollfd; + ret[cnt] = NULL; + +out: + usbi_mutex_unlock(&ctx->pollfds_lock); + return (const struct libusb_pollfd **) ret; +#else + usbi_err(ctx, "external polling of libusb's internal descriptors "\ + "is not yet supported on Windows platforms"); + return NULL; +#endif +} + +/* Backends call this from handle_events to report disconnection of a device. + * The transfers get cancelled appropriately. + */ +void usbi_handle_disconnect(struct libusb_device_handle *handle) +{ + struct usbi_transfer *cur; + struct usbi_transfer *to_cancel; + + usbi_dbg("device %d.%d", + handle->dev->bus_number, handle->dev->device_address); + + /* terminate all pending transfers with the LIBUSB_TRANSFER_NO_DEVICE + * status code. + * + * this is a bit tricky because: + * 1. we can't do transfer completion while holding flying_transfers_lock + * 2. the transfers list can change underneath us - if we were to build a + * list of transfers to complete (while holding look), the situation + * might be different by the time we come to free them + * + * so we resort to a loop-based approach as below + * FIXME: is this still potentially racy? + */ + + while (1) { + usbi_mutex_lock(&HANDLE_CTX(handle)->flying_transfers_lock); + to_cancel = NULL; + list_for_each_entry(cur, &HANDLE_CTX(handle)->flying_transfers, list, struct usbi_transfer) + if (USBI_TRANSFER_TO_LIBUSB_TRANSFER(cur)->dev_handle == handle) { + to_cancel = cur; + break; + } + usbi_mutex_unlock(&HANDLE_CTX(handle)->flying_transfers_lock); + + if (!to_cancel) + break; + + usbi_backend->clear_transfer_priv(to_cancel); + usbi_handle_transfer_completion(to_cancel, LIBUSB_TRANSFER_NO_DEVICE); + } + +} diff --git a/libusb/libusb-1.0.def b/libusb/libusb-1.0.def new file mode 100644 index 0000000..1d6a5d2 --- /dev/null +++ b/libusb/libusb-1.0.def @@ -0,0 +1,120 @@ +LIBRARY +EXPORTS + libusb_alloc_transfer + libusb_alloc_transfer@4 = libusb_alloc_transfer + libusb_attach_kernel_driver + libusb_attach_kernel_driver@8 = libusb_attach_kernel_driver + libusb_bulk_transfer + libusb_bulk_transfer@24 = libusb_bulk_transfer + libusb_cancel_transfer + libusb_cancel_transfer@4 = libusb_cancel_transfer + libusb_claim_interface + libusb_claim_interface@8 = libusb_claim_interface + libusb_clear_halt + libusb_clear_halt@8 = libusb_clear_halt + libusb_close + libusb_close@4 = libusb_close + libusb_control_transfer + libusb_control_transfer@32 = libusb_control_transfer + libusb_detach_kernel_driver + libusb_detach_kernel_driver@8 = libusb_detach_kernel_driver + libusb_error_name + libusb_error_name@4 = libusb_error_name + libusb_event_handler_active + libusb_event_handler_active@4 = libusb_event_handler_active + libusb_event_handling_ok + libusb_event_handling_ok@4 = libusb_event_handling_ok + libusb_exit + libusb_exit@4 = libusb_exit + libusb_free_config_descriptor + libusb_free_config_descriptor@4 = libusb_free_config_descriptor + libusb_free_device_list + libusb_free_device_list@8 = libusb_free_device_list + libusb_free_transfer + libusb_free_transfer@4 = libusb_free_transfer + libusb_get_active_config_descriptor + libusb_get_active_config_descriptor@8 = libusb_get_active_config_descriptor + libusb_get_bus_number + libusb_get_bus_number@4 = libusb_get_bus_number + libusb_get_config_descriptor + libusb_get_config_descriptor@12 = libusb_get_config_descriptor + libusb_get_config_descriptor_by_value + libusb_get_config_descriptor_by_value@12 = libusb_get_config_descriptor_by_value + libusb_get_configuration + libusb_get_configuration@8 = libusb_get_configuration + libusb_get_device + libusb_get_device@4 = libusb_get_device + libusb_get_device_address + libusb_get_device_address@4 = libusb_get_device_address + libusb_get_device_descriptor + libusb_get_device_descriptor@8 = libusb_get_device_descriptor + libusb_get_device_list + libusb_get_device_list@8 = libusb_get_device_list + libusb_get_device_speed + libusb_get_device_speed@4 = libusb_get_device_speed + libusb_get_max_iso_packet_size + libusb_get_max_iso_packet_size@8 = libusb_get_max_iso_packet_size + libusb_get_max_packet_size + libusb_get_max_packet_size@8 = libusb_get_max_packet_size + libusb_get_next_timeout + libusb_get_next_timeout@8 = libusb_get_next_timeout + libusb_get_pollfds + libusb_get_pollfds@4 = libusb_get_pollfds + libusb_get_string_descriptor_ascii + libusb_get_string_descriptor_ascii@16 = libusb_get_string_descriptor_ascii + libusb_get_version + libusb_get_version@0 = libusb_get_version + libusb_handle_events + libusb_handle_events@4 = libusb_handle_events + libusb_handle_events_completed + libusb_handle_events_completed@8 = libusb_handle_events_completed + libusb_handle_events_locked + libusb_handle_events_locked@8 = libusb_handle_events_locked + libusb_handle_events_timeout + libusb_handle_events_timeout@8 = libusb_handle_events_timeout + libusb_handle_events_timeout_completed + libusb_handle_events_timeout_completed@12 = libusb_handle_events_timeout_completed + libusb_has_capability + libusb_has_capability@4 = libusb_has_capability + libusb_init + libusb_init@4 = libusb_init + libusb_interrupt_transfer + libusb_interrupt_transfer@24 = libusb_interrupt_transfer + libusb_kernel_driver_active + libusb_kernel_driver_active@8 = libusb_kernel_driver_active + libusb_lock_event_waiters + libusb_lock_event_waiters@4 = libusb_lock_event_waiters + libusb_lock_events + libusb_lock_events@4 = libusb_lock_events + libusb_open + libusb_open@8 = libusb_open + libusb_open_device_with_vid_pid + libusb_open_device_with_vid_pid@12 = libusb_open_device_with_vid_pid + libusb_pollfds_handle_timeouts + libusb_pollfds_handle_timeouts@4 = libusb_pollfds_handle_timeouts + libusb_ref_device + libusb_ref_device@4 = libusb_ref_device + libusb_release_interface + libusb_release_interface@8 = libusb_release_interface + libusb_reset_device + libusb_reset_device@4 = libusb_reset_device + libusb_set_configuration + libusb_set_configuration@8 = libusb_set_configuration + libusb_set_debug + libusb_set_debug@8 = libusb_set_debug + libusb_set_interface_alt_setting + libusb_set_interface_alt_setting@12 = libusb_set_interface_alt_setting + libusb_set_pollfd_notifiers + libusb_set_pollfd_notifiers@16 = libusb_set_pollfd_notifiers + libusb_submit_transfer + libusb_submit_transfer@4 = libusb_submit_transfer + libusb_try_lock_events + libusb_try_lock_events@4 = libusb_try_lock_events + libusb_unlock_event_waiters + libusb_unlock_event_waiters@4 = libusb_unlock_event_waiters + libusb_unlock_events + libusb_unlock_events@4 = libusb_unlock_events + libusb_unref_device + libusb_unref_device@4 = libusb_unref_device + libusb_wait_for_event + libusb_wait_for_event@8 = libusb_wait_for_event diff --git a/libusb/libusb-1.0.rc b/libusb/libusb-1.0.rc new file mode 100644 index 0000000..a59a430 --- /dev/null +++ b/libusb/libusb-1.0.rc @@ -0,0 +1,56 @@ +/* + * For Windows: input this file to the Resoure Compiler to produce a binary + * .res file. This is then embedded in the resultant library (like any other + * compilation object). + * The information can then be queried using standard APIs and can also be + * viewed with utilities such as Windows Explorer. + */ +#include "winresrc.h" + +#include "version.h" +#ifndef LIBUSB_VERSIONSTRING +#define LU_STR(s) #s +#define LU_XSTR(s) LU_STR(s) +#if LIBUSB_NANO > 0 +#define LIBUSB_VERSIONSTRING LU_XSTR(LIBUSB_MAJOR) "." LU_XSTR(LIBUSB_MINOR) "." LU_XSTR(LIBUSB_MICRO) "." LU_XSTR(LIBUSB_NANO) LIBUSB_RC "\0" +#else +#define LIBUSB_VERSIONSTRING LU_XSTR(LIBUSB_MAJOR) "." LU_XSTR(LIBUSB_MINOR) "." LU_XSTR(LIBUSB_MICRO) LIBUSB_RC "\0" +#endif +#endif + +VS_VERSION_INFO VERSIONINFO + FILEVERSION LIBUSB_MAJOR,LIBUSB_MINOR,LIBUSB_MICRO,LIBUSB_NANO + PRODUCTVERSION LIBUSB_MAJOR,LIBUSB_MINOR,LIBUSB_MICRO,LIBUSB_NANO + FILEFLAGSMASK 0x3fL +#ifdef _DEBUG + FILEFLAGS 0x1L +#else + FILEFLAGS 0x0L +#endif + FILEOS 0x40004L + FILETYPE 0x2L + FILESUBTYPE 0x0L +BEGIN + BLOCK "StringFileInfo" + BEGIN + BLOCK "040904b0" + BEGIN + VALUE "Comments", "\0" + VALUE "CompanyName", "libusb.org\0" + VALUE "FileDescription", "C library for writing portable USB drivers in userspace\0" + VALUE "FileVersion", LIBUSB_VERSIONSTRING + VALUE "InternalName", "libusb\0" + VALUE "LegalCopyright", "See individual source files, GNU LGPL v2.1 or later.\0" + VALUE "LegalTrademarks", "http://www.gnu.org/licenses/lgpl-2.1.html\0" + VALUE "OriginalFilename", "libusb-1.0.dll\0" + VALUE "PrivateBuild", "\0" + VALUE "ProductName", "libusb-1.0\0" + VALUE "ProductVersion", LIBUSB_VERSIONSTRING + VALUE "SpecialBuild", "\0" + END + END + BLOCK "VarFileInfo" + BEGIN + VALUE "Translation", 0x409, 1200 + END +END diff --git a/libusb/libusb.h b/libusb/libusb.h new file mode 100644 index 0000000..58b406f --- /dev/null +++ b/libusb/libusb.h @@ -0,0 +1,1443 @@ +/* + * Public libusb header file + * Copyright (C) 2007-2008 Daniel Drake <dsd@gentoo.org> + * Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef LIBUSB_H +#define LIBUSB_H + +#ifdef _MSC_VER +/* on MS environments, the inline keyword is available in C++ only */ +#define inline __inline +/* ssize_t is also not available (copy/paste from MinGW) */ +#ifndef _SSIZE_T_DEFINED +#define _SSIZE_T_DEFINED +#undef ssize_t +#ifdef _WIN64 + typedef __int64 ssize_t; +#else + typedef int ssize_t; +#endif /* _WIN64 */ +#endif /* _SSIZE_T_DEFINED */ +#endif /* _MSC_VER */ + +/* stdint.h is also not usually available on MS */ +#if defined(_MSC_VER) && (_MSC_VER < 1600) && (!defined(_STDINT)) && (!defined(_STDINT_H)) +typedef unsigned __int8 uint8_t; +typedef unsigned __int16 uint16_t; +typedef unsigned __int32 uint32_t; +#else +#include <stdint.h> +#endif + +#include <sys/types.h> +#include <time.h> +#include <limits.h> + +#if defined(__linux) || defined(__APPLE__) || defined(__CYGWIN__) +#include <sys/time.h> +#endif + +/* 'interface' might be defined as a macro on Windows, so we need to + * undefine it so as not to break the current libusb API, because + * libusb_config_descriptor has an 'interface' member + * As this can be problematic if you include windows.h after libusb.h + * in your sources, we force windows.h to be included first. */ +#if defined(_WIN32) || defined(__CYGWIN__) +#include <windows.h> +#if defined(interface) +#undef interface +#endif +#endif + +/** \def LIBUSB_CALL + * \ingroup misc + * libusb's Windows calling convention. + * + * Under Windows, the selection of available compilers and configurations + * means that, unlike other platforms, there is not <em>one true calling + * convention</em> (calling convention: the manner in which parameters are + * passed to funcions in the generated assembly code). + * + * Matching the Windows API itself, libusb uses the WINAPI convention (which + * translates to the <tt>stdcall</tt> convention) and guarantees that the + * library is compiled in this way. The public header file also includes + * appropriate annotations so that your own software will use the right + * convention, even if another convention is being used by default within + * your codebase. + * + * The one consideration that you must apply in your software is to mark + * all functions which you use as libusb callbacks with this LIBUSB_CALL + * annotation, so that they too get compiled for the correct calling + * convention. + * + * On non-Windows operating systems, this macro is defined as nothing. This + * means that you can apply it to your code without worrying about + * cross-platform compatibility. + */ +/* LIBUSB_CALL must be defined on both definition and declaration of libusb + * functions. You'd think that declaration would be enough, but cygwin will + * complain about conflicting types unless both are marked this way. + * The placement of this macro is important too; it must appear after the + * return type, before the function name. See internal documentation for + * API_EXPORTED. + */ +#if defined(_WIN32) || defined(__CYGWIN__) +#define LIBUSB_CALL WINAPI +#else +#define LIBUSB_CALL +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/** \def libusb_cpu_to_le16 + * \ingroup misc + * Convert a 16-bit value from host-endian to little-endian format. On + * little endian systems, this function does nothing. On big endian systems, + * the bytes are swapped. + * \param x the host-endian value to convert + * \returns the value in little-endian byte order + */ +static inline uint16_t libusb_cpu_to_le16(const uint16_t x) +{ + union { + uint8_t b8[2]; + uint16_t b16; + } _tmp; + _tmp.b8[1] = x >> 8; + _tmp.b8[0] = x & 0xff; + return _tmp.b16; +} + +/** \def libusb_le16_to_cpu + * \ingroup misc + * Convert a 16-bit value from little-endian to host-endian format. On + * little endian systems, this function does nothing. On big endian systems, + * the bytes are swapped. + * \param x the little-endian value to convert + * \returns the value in host-endian byte order + */ +#define libusb_le16_to_cpu libusb_cpu_to_le16 + +/* standard USB stuff */ + +/** \ingroup desc + * Device and/or Interface Class codes */ +enum libusb_class_code { + /** In the context of a \ref libusb_device_descriptor "device descriptor", + * this bDeviceClass value indicates that each interface specifies its + * own class information and all interfaces operate independently. + */ + LIBUSB_CLASS_PER_INTERFACE = 0, + + /** Audio class */ + LIBUSB_CLASS_AUDIO = 1, + + /** Communications class */ + LIBUSB_CLASS_COMM = 2, + + /** Human Interface Device class */ + LIBUSB_CLASS_HID = 3, + + /** Physical */ + LIBUSB_CLASS_PHYSICAL = 5, + + /** Printer class */ + LIBUSB_CLASS_PRINTER = 7, + + /** Image class */ + LIBUSB_CLASS_PTP = 6, /* legacy name from libusb-0.1 usb.h */ + LIBUSB_CLASS_IMAGE = 6, + + /** Mass storage class */ + LIBUSB_CLASS_MASS_STORAGE = 8, + + /** Hub class */ + LIBUSB_CLASS_HUB = 9, + + /** Data class */ + LIBUSB_CLASS_DATA = 10, + + /** Smart Card */ + LIBUSB_CLASS_SMART_CARD = 0x0b, + + /** Content Security */ + LIBUSB_CLASS_CONTENT_SECURITY = 0x0d, + + /** Video */ + LIBUSB_CLASS_VIDEO = 0x0e, + + /** Personal Healthcare */ + LIBUSB_CLASS_PERSONAL_HEALTHCARE = 0x0f, + + /** Diagnostic Device */ + LIBUSB_CLASS_DIAGNOSTIC_DEVICE = 0xdc, + + /** Wireless class */ + LIBUSB_CLASS_WIRELESS = 0xe0, + + /** Application class */ + LIBUSB_CLASS_APPLICATION = 0xfe, + + /** Class is vendor-specific */ + LIBUSB_CLASS_VENDOR_SPEC = 0xff +}; + +/** \ingroup desc + * Descriptor types as defined by the USB specification. */ +enum libusb_descriptor_type { + /** Device descriptor. See libusb_device_descriptor. */ + LIBUSB_DT_DEVICE = 0x01, + + /** Configuration descriptor. See libusb_config_descriptor. */ + LIBUSB_DT_CONFIG = 0x02, + + /** String descriptor */ + LIBUSB_DT_STRING = 0x03, + + /** Interface descriptor. See libusb_interface_descriptor. */ + LIBUSB_DT_INTERFACE = 0x04, + + /** Endpoint descriptor. See libusb_endpoint_descriptor. */ + LIBUSB_DT_ENDPOINT = 0x05, + + /** HID descriptor */ + LIBUSB_DT_HID = 0x21, + + /** HID report descriptor */ + LIBUSB_DT_REPORT = 0x22, + + /** Physical descriptor */ + LIBUSB_DT_PHYSICAL = 0x23, + + /** Hub descriptor */ + LIBUSB_DT_HUB = 0x29, +}; + +/* Descriptor sizes per descriptor type */ +#define LIBUSB_DT_DEVICE_SIZE 18 +#define LIBUSB_DT_CONFIG_SIZE 9 +#define LIBUSB_DT_INTERFACE_SIZE 9 +#define LIBUSB_DT_ENDPOINT_SIZE 7 +#define LIBUSB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */ +#define LIBUSB_DT_HUB_NONVAR_SIZE 7 + +#define LIBUSB_ENDPOINT_ADDRESS_MASK 0x0f /* in bEndpointAddress */ +#define LIBUSB_ENDPOINT_DIR_MASK 0x80 + +/** \ingroup desc + * Endpoint direction. Values for bit 7 of the + * \ref libusb_endpoint_descriptor::bEndpointAddress "endpoint address" scheme. + */ +enum libusb_endpoint_direction { + /** In: device-to-host */ + LIBUSB_ENDPOINT_IN = 0x80, + + /** Out: host-to-device */ + LIBUSB_ENDPOINT_OUT = 0x00 +}; + +#define LIBUSB_TRANSFER_TYPE_MASK 0x03 /* in bmAttributes */ + +/** \ingroup desc + * Endpoint transfer type. Values for bits 0:1 of the + * \ref libusb_endpoint_descriptor::bmAttributes "endpoint attributes" field. + */ +enum libusb_transfer_type { + /** Control endpoint */ + LIBUSB_TRANSFER_TYPE_CONTROL = 0, + + /** Isochronous endpoint */ + LIBUSB_TRANSFER_TYPE_ISOCHRONOUS = 1, + + /** Bulk endpoint */ + LIBUSB_TRANSFER_TYPE_BULK = 2, + + /** Interrupt endpoint */ + LIBUSB_TRANSFER_TYPE_INTERRUPT = 3 +}; + +/** \ingroup misc + * Standard requests, as defined in table 9-3 of the USB2 specifications */ +enum libusb_standard_request { + /** Request status of the specific recipient */ + LIBUSB_REQUEST_GET_STATUS = 0x00, + + /** Clear or disable a specific feature */ + LIBUSB_REQUEST_CLEAR_FEATURE = 0x01, + + /* 0x02 is reserved */ + + /** Set or enable a specific feature */ + LIBUSB_REQUEST_SET_FEATURE = 0x03, + + /* 0x04 is reserved */ + + /** Set device address for all future accesses */ + LIBUSB_REQUEST_SET_ADDRESS = 0x05, + + /** Get the specified descriptor */ + LIBUSB_REQUEST_GET_DESCRIPTOR = 0x06, + + /** Used to update existing descriptors or add new descriptors */ + LIBUSB_REQUEST_SET_DESCRIPTOR = 0x07, + + /** Get the current device configuration value */ + LIBUSB_REQUEST_GET_CONFIGURATION = 0x08, + + /** Set device configuration */ + LIBUSB_REQUEST_SET_CONFIGURATION = 0x09, + + /** Return the selected alternate setting for the specified interface */ + LIBUSB_REQUEST_GET_INTERFACE = 0x0A, + + /** Select an alternate interface for the specified interface */ + LIBUSB_REQUEST_SET_INTERFACE = 0x0B, + + /** Set then report an endpoint's synchronization frame */ + LIBUSB_REQUEST_SYNCH_FRAME = 0x0C, +}; + +/** \ingroup misc + * Request type bits of the + * \ref libusb_control_setup::bmRequestType "bmRequestType" field in control + * transfers. */ +enum libusb_request_type { + /** Standard */ + LIBUSB_REQUEST_TYPE_STANDARD = (0x00 << 5), + + /** Class */ + LIBUSB_REQUEST_TYPE_CLASS = (0x01 << 5), + + /** Vendor */ + LIBUSB_REQUEST_TYPE_VENDOR = (0x02 << 5), + + /** Reserved */ + LIBUSB_REQUEST_TYPE_RESERVED = (0x03 << 5) +}; + +/** \ingroup misc + * Recipient bits of the + * \ref libusb_control_setup::bmRequestType "bmRequestType" field in control + * transfers. Values 4 through 31 are reserved. */ +enum libusb_request_recipient { + /** Device */ + LIBUSB_RECIPIENT_DEVICE = 0x00, + + /** Interface */ + LIBUSB_RECIPIENT_INTERFACE = 0x01, + + /** Endpoint */ + LIBUSB_RECIPIENT_ENDPOINT = 0x02, + + /** Other */ + LIBUSB_RECIPIENT_OTHER = 0x03, +}; + +#define LIBUSB_ISO_SYNC_TYPE_MASK 0x0C + +/** \ingroup desc + * Synchronization type for isochronous endpoints. Values for bits 2:3 of the + * \ref libusb_endpoint_descriptor::bmAttributes "bmAttributes" field in + * libusb_endpoint_descriptor. + */ +enum libusb_iso_sync_type { + /** No synchronization */ + LIBUSB_ISO_SYNC_TYPE_NONE = 0, + + /** Asynchronous */ + LIBUSB_ISO_SYNC_TYPE_ASYNC = 1, + + /** Adaptive */ + LIBUSB_ISO_SYNC_TYPE_ADAPTIVE = 2, + + /** Synchronous */ + LIBUSB_ISO_SYNC_TYPE_SYNC = 3 +}; + +#define LIBUSB_ISO_USAGE_TYPE_MASK 0x30 + +/** \ingroup desc + * Usage type for isochronous endpoints. Values for bits 4:5 of the + * \ref libusb_endpoint_descriptor::bmAttributes "bmAttributes" field in + * libusb_endpoint_descriptor. + */ +enum libusb_iso_usage_type { + /** Data endpoint */ + LIBUSB_ISO_USAGE_TYPE_DATA = 0, + + /** Feedback endpoint */ + LIBUSB_ISO_USAGE_TYPE_FEEDBACK = 1, + + /** Implicit feedback Data endpoint */ + LIBUSB_ISO_USAGE_TYPE_IMPLICIT = 2, +}; + +/** \ingroup desc + * A structure representing the standard USB device descriptor. This + * descriptor is documented in section 9.6.1 of the USB 2.0 specification. + * All multiple-byte fields are represented in host-endian format. + */ +struct libusb_device_descriptor { + /** Size of this descriptor (in bytes) */ + uint8_t bLength; + + /** Descriptor type. Will have value + * \ref libusb_descriptor_type::LIBUSB_DT_DEVICE LIBUSB_DT_DEVICE in this + * context. */ + uint8_t bDescriptorType; + + /** USB specification release number in binary-coded decimal. A value of + * 0x0200 indicates USB 2.0, 0x0110 indicates USB 1.1, etc. */ + uint16_t bcdUSB; + + /** USB-IF class code for the device. See \ref libusb_class_code. */ + uint8_t bDeviceClass; + + /** USB-IF subclass code for the device, qualified by the bDeviceClass + * value */ + uint8_t bDeviceSubClass; + + /** USB-IF protocol code for the device, qualified by the bDeviceClass and + * bDeviceSubClass values */ + uint8_t bDeviceProtocol; + + /** Maximum packet size for endpoint 0 */ + uint8_t bMaxPacketSize0; + + /** USB-IF vendor ID */ + uint16_t idVendor; + + /** USB-IF product ID */ + uint16_t idProduct; + + /** Device release number in binary-coded decimal */ + uint16_t bcdDevice; + + /** Index of string descriptor describing manufacturer */ + uint8_t iManufacturer; + + /** Index of string descriptor describing product */ + uint8_t iProduct; + + /** Index of string descriptor containing device serial number */ + uint8_t iSerialNumber; + + /** Number of possible configurations */ + uint8_t bNumConfigurations; +}; + +/** \ingroup desc + * A structure representing the standard USB endpoint descriptor. This + * descriptor is documented in section 9.6.3 of the USB 2.0 specification. + * All multiple-byte fields are represented in host-endian format. + */ +struct libusb_endpoint_descriptor { + /** Size of this descriptor (in bytes) */ + uint8_t bLength; + + /** Descriptor type. Will have value + * \ref libusb_descriptor_type::LIBUSB_DT_ENDPOINT LIBUSB_DT_ENDPOINT in + * this context. */ + uint8_t bDescriptorType; + + /** The address of the endpoint described by this descriptor. Bits 0:3 are + * the endpoint number. Bits 4:6 are reserved. Bit 7 indicates direction, + * see \ref libusb_endpoint_direction. + */ + uint8_t bEndpointAddress; + + /** Attributes which apply to the endpoint when it is configured using + * the bConfigurationValue. Bits 0:1 determine the transfer type and + * correspond to \ref libusb_transfer_type. Bits 2:3 are only used for + * isochronous endpoints and correspond to \ref libusb_iso_sync_type. + * Bits 4:5 are also only used for isochronous endpoints and correspond to + * \ref libusb_iso_usage_type. Bits 6:7 are reserved. + */ + uint8_t bmAttributes; + + /** Maximum packet size this endpoint is capable of sending/receiving. */ + uint16_t wMaxPacketSize; + + /** Interval for polling endpoint for data transfers. */ + uint8_t bInterval; + + /** For audio devices only: the rate at which synchronization feedback + * is provided. */ + uint8_t bRefresh; + + /** For audio devices only: the address if the synch endpoint */ + uint8_t bSynchAddress; + + /** Extra descriptors. If libusb encounters unknown endpoint descriptors, + * it will store them here, should you wish to parse them. */ + const unsigned char *extra; + + /** Length of the extra descriptors, in bytes. */ + int extra_length; +}; + +/** \ingroup desc + * A structure representing the standard USB interface descriptor. This + * descriptor is documented in section 9.6.5 of the USB 2.0 specification. + * All multiple-byte fields are represented in host-endian format. + */ +struct libusb_interface_descriptor { + /** Size of this descriptor (in bytes) */ + uint8_t bLength; + + /** Descriptor type. Will have value + * \ref libusb_descriptor_type::LIBUSB_DT_INTERFACE LIBUSB_DT_INTERFACE + * in this context. */ + uint8_t bDescriptorType; + + /** Number of this interface */ + uint8_t bInterfaceNumber; + + /** Value used to select this alternate setting for this interface */ + uint8_t bAlternateSetting; + + /** Number of endpoints used by this interface (excluding the control + * endpoint). */ + uint8_t bNumEndpoints; + + /** USB-IF class code for this interface. See \ref libusb_class_code. */ + uint8_t bInterfaceClass; + + /** USB-IF subclass code for this interface, qualified by the + * bInterfaceClass value */ + uint8_t bInterfaceSubClass; + + /** USB-IF protocol code for this interface, qualified by the + * bInterfaceClass and bInterfaceSubClass values */ + uint8_t bInterfaceProtocol; + + /** Index of string descriptor describing this interface */ + uint8_t iInterface; + + /** Array of endpoint descriptors. This length of this array is determined + * by the bNumEndpoints field. */ + const struct libusb_endpoint_descriptor *endpoint; + + /** Extra descriptors. If libusb encounters unknown interface descriptors, + * it will store them here, should you wish to parse them. */ + const unsigned char *extra; + + /** Length of the extra descriptors, in bytes. */ + int extra_length; +}; + +/** \ingroup desc + * A collection of alternate settings for a particular USB interface. + */ +struct libusb_interface { + /** Array of interface descriptors. The length of this array is determined + * by the num_altsetting field. */ + const struct libusb_interface_descriptor *altsetting; + + /** The number of alternate settings that belong to this interface */ + int num_altsetting; +}; + +/** \ingroup desc + * A structure representing the standard USB configuration descriptor. This + * descriptor is documented in section 9.6.3 of the USB 2.0 specification. + * All multiple-byte fields are represented in host-endian format. + */ +struct libusb_config_descriptor { + /** Size of this descriptor (in bytes) */ + uint8_t bLength; + + /** Descriptor type. Will have value + * \ref libusb_descriptor_type::LIBUSB_DT_CONFIG LIBUSB_DT_CONFIG + * in this context. */ + uint8_t bDescriptorType; + + /** Total length of data returned for this configuration */ + uint16_t wTotalLength; + + /** Number of interfaces supported by this configuration */ + uint8_t bNumInterfaces; + + /** Identifier value for this configuration */ + uint8_t bConfigurationValue; + + /** Index of string descriptor describing this configuration */ + uint8_t iConfiguration; + + /** Configuration characteristics */ + uint8_t bmAttributes; + + /** Maximum power consumption of the USB device from this bus in this + * configuration when the device is fully opreation. Expressed in units + * of 2 mA. */ + uint8_t MaxPower; + + /** Array of interfaces supported by this configuration. The length of + * this array is determined by the bNumInterfaces field. */ + const struct libusb_interface *interface; + + /** Extra descriptors. If libusb encounters unknown configuration + * descriptors, it will store them here, should you wish to parse them. */ + const unsigned char *extra; + + /** Length of the extra descriptors, in bytes. */ + int extra_length; +}; + +/** \ingroup asyncio + * Setup packet for control transfers. */ +struct libusb_control_setup { + /** Request type. Bits 0:4 determine recipient, see + * \ref libusb_request_recipient. Bits 5:6 determine type, see + * \ref libusb_request_type. Bit 7 determines data transfer direction, see + * \ref libusb_endpoint_direction. + */ + uint8_t bmRequestType; + + /** Request. If the type bits of bmRequestType are equal to + * \ref libusb_request_type::LIBUSB_REQUEST_TYPE_STANDARD + * "LIBUSB_REQUEST_TYPE_STANDARD" then this field refers to + * \ref libusb_standard_request. For other cases, use of this field is + * application-specific. */ + uint8_t bRequest; + + /** Value. Varies according to request */ + uint16_t wValue; + + /** Index. Varies according to request, typically used to pass an index + * or offset */ + uint16_t wIndex; + + /** Number of bytes to transfer */ + uint16_t wLength; +}; + +#define LIBUSB_CONTROL_SETUP_SIZE (sizeof(struct libusb_control_setup)) + +/* libusb */ + +struct libusb_context; +struct libusb_device; +struct libusb_device_handle; + +/** \ingroup lib + * Structure representing the libusb version. + */ +struct libusb_version { + /** Library major version. */ + const uint16_t major; + + /** Library minor version. */ + const uint16_t minor; + + /** Library micro version. */ + const uint16_t micro; + + /** Library nano version. This field is only nonzero on Windows. */ + const uint16_t nano; + + /** Library release candidate suffix string, e.g. "-rc4". */ + const char *rc; + + /** Output of `git describe --tags` at library build time. */ + const char *describe; +}; + +/** \ingroup lib + * Structure representing a libusb session. The concept of individual libusb + * sessions allows for your program to use two libraries (or dynamically + * load two modules) which both independently use libusb. This will prevent + * interference between the individual libusb users - for example + * libusb_set_debug() will not affect the other user of the library, and + * libusb_exit() will not destroy resources that the other user is still + * using. + * + * Sessions are created by libusb_init() and destroyed through libusb_exit(). + * If your application is guaranteed to only ever include a single libusb + * user (i.e. you), you do not have to worry about contexts: pass NULL in + * every function call where a context is required. The default context + * will be used. + * + * For more information, see \ref contexts. + */ +typedef struct libusb_context libusb_context; + +/** \ingroup dev + * Structure representing a USB device detected on the system. This is an + * opaque type for which you are only ever provided with a pointer, usually + * originating from libusb_get_device_list(). + * + * Certain operations can be performed on a device, but in order to do any + * I/O you will have to first obtain a device handle using libusb_open(). + * + * Devices are reference counted with libusb_device_ref() and + * libusb_device_unref(), and are freed when the reference count reaches 0. + * New devices presented by libusb_get_device_list() have a reference count of + * 1, and libusb_free_device_list() can optionally decrease the reference count + * on all devices in the list. libusb_open() adds another reference which is + * later destroyed by libusb_close(). + */ +typedef struct libusb_device libusb_device; + + +/** \ingroup dev + * Structure representing a handle on a USB device. This is an opaque type for + * which you are only ever provided with a pointer, usually originating from + * libusb_open(). + * + * A device handle is used to perform I/O and other operations. When finished + * with a device handle, you should call libusb_close(). + */ +typedef struct libusb_device_handle libusb_device_handle; + +/** \ingroup dev + * Speed codes. Indicates the speed at which the device is operating. + */ +enum libusb_speed { + /** The OS doesn't report or know the device speed. */ + LIBUSB_SPEED_UNKNOWN = 0, + + /** The device is operating at low speed (1.5MBit/s). */ + LIBUSB_SPEED_LOW = 1, + + /** The device is operating at full speed (12MBit/s). */ + LIBUSB_SPEED_FULL = 2, + + /** The device is operating at high speed (480MBit/s). */ + LIBUSB_SPEED_HIGH = 3, + + /** The device is operating at super speed (5000MBit/s). */ + LIBUSB_SPEED_SUPER = 4, +}; + +/** \ingroup misc + * Error codes. Most libusb functions return 0 on success or one of these + * codes on failure. + * You can call \ref libusb_error_name() to retrieve a string representation + * of an error code. + */ +enum libusb_error { + /** Success (no error) */ + LIBUSB_SUCCESS = 0, + + /** Input/output error */ + LIBUSB_ERROR_IO = -1, + + /** Invalid parameter */ + LIBUSB_ERROR_INVALID_PARAM = -2, + + /** Access denied (insufficient permissions) */ + LIBUSB_ERROR_ACCESS = -3, + + /** No such device (it may have been disconnected) */ + LIBUSB_ERROR_NO_DEVICE = -4, + + /** Entity not found */ + LIBUSB_ERROR_NOT_FOUND = -5, + + /** Resource busy */ + LIBUSB_ERROR_BUSY = -6, + + /** Operation timed out */ + LIBUSB_ERROR_TIMEOUT = -7, + + /** Overflow */ + LIBUSB_ERROR_OVERFLOW = -8, + + /** Pipe error */ + LIBUSB_ERROR_PIPE = -9, + + /** System call interrupted (perhaps due to signal) */ + LIBUSB_ERROR_INTERRUPTED = -10, + + /** Insufficient memory */ + LIBUSB_ERROR_NO_MEM = -11, + + /** Operation not supported or unimplemented on this platform */ + LIBUSB_ERROR_NOT_SUPPORTED = -12, + + /* NB! Remember to update libusb_error_name() + when adding new error codes here. */ + + /** Other error */ + LIBUSB_ERROR_OTHER = -99, +}; + +/** \ingroup asyncio + * Transfer status codes */ +enum libusb_transfer_status { + /** Transfer completed without error. Note that this does not indicate + * that the entire amount of requested data was transferred. */ + LIBUSB_TRANSFER_COMPLETED, + + /** Transfer failed */ + LIBUSB_TRANSFER_ERROR, + + /** Transfer timed out */ + LIBUSB_TRANSFER_TIMED_OUT, + + /** Transfer was cancelled */ + LIBUSB_TRANSFER_CANCELLED, + + /** For bulk/interrupt endpoints: halt condition detected (endpoint + * stalled). For control endpoints: control request not supported. */ + LIBUSB_TRANSFER_STALL, + + /** Device was disconnected */ + LIBUSB_TRANSFER_NO_DEVICE, + + /** Device sent more data than requested */ + LIBUSB_TRANSFER_OVERFLOW, +}; + +/** \ingroup asyncio + * libusb_transfer.flags values */ +enum libusb_transfer_flags { + /** Report short frames as errors */ + LIBUSB_TRANSFER_SHORT_NOT_OK = 1<<0, + + /** Automatically free() transfer buffer during libusb_free_transfer() */ + LIBUSB_TRANSFER_FREE_BUFFER = 1<<1, + + /** Automatically call libusb_free_transfer() after callback returns. + * If this flag is set, it is illegal to call libusb_free_transfer() + * from your transfer callback, as this will result in a double-free + * when this flag is acted upon. */ + LIBUSB_TRANSFER_FREE_TRANSFER = 1<<2, + + /** Terminate transfers that are a multiple of the endpoint's + * wMaxPacketSize with an extra zero length packet. This is useful + * when a device protocol mandates that each logical request is + * terminated by an incomplete packet (i.e. the logical requests are + * not separated by other means). + * + * This flag only affects host-to-device transfers to bulk and interrupt + * endpoints. In other situations, it is ignored. + * + * This flag only affects transfers with a length that is a multiple of + * the endpoint's wMaxPacketSize. On transfers of other lengths, this + * flag has no effect. Therefore, if you are working with a device that + * needs a ZLP whenever the end of the logical request falls on a packet + * boundary, then it is sensible to set this flag on <em>every</em> + * transfer (you do not have to worry about only setting it on transfers + * that end on the boundary). + * + * This flag is currently only supported on Linux. + * On other systems, libusb_submit_transfer() will return + * LIBUSB_ERROR_NOT_SUPPORTED for every transfer where this flag is set. + * + * Available since libusb-1.0.9. + */ + LIBUSB_TRANSFER_ADD_ZERO_PACKET = 1 << 3, +}; + +/** \ingroup asyncio + * Isochronous packet descriptor. */ +struct libusb_iso_packet_descriptor { + /** Length of data to request in this packet */ + unsigned int length; + + /** Amount of data that was actually transferred */ + unsigned int actual_length; + + /** Status code for this packet */ + enum libusb_transfer_status status; +}; + +struct libusb_transfer; + +/** \ingroup asyncio + * Asynchronous transfer callback function type. When submitting asynchronous + * transfers, you pass a pointer to a callback function of this type via the + * \ref libusb_transfer::callback "callback" member of the libusb_transfer + * structure. libusb will call this function later, when the transfer has + * completed or failed. See \ref asyncio for more information. + * \param transfer The libusb_transfer struct the callback function is being + * notified about. + */ +typedef void (LIBUSB_CALL *libusb_transfer_cb_fn)(struct libusb_transfer *transfer); + +/** \ingroup asyncio + * The generic USB transfer structure. The user populates this structure and + * then submits it in order to request a transfer. After the transfer has + * completed, the library populates the transfer with the results and passes + * it back to the user. + */ +struct libusb_transfer { + /** Handle of the device that this transfer will be submitted to */ + libusb_device_handle *dev_handle; + + /** A bitwise OR combination of \ref libusb_transfer_flags. */ + uint8_t flags; + + /** Address of the endpoint where this transfer will be sent. */ + unsigned char endpoint; + + /** Type of the endpoint from \ref libusb_transfer_type */ + unsigned char type; + + /** Timeout for this transfer in millseconds. A value of 0 indicates no + * timeout. */ + unsigned int timeout; + + /** The status of the transfer. Read-only, and only for use within + * transfer callback function. + * + * If this is an isochronous transfer, this field may read COMPLETED even + * if there were errors in the frames. Use the + * \ref libusb_iso_packet_descriptor::status "status" field in each packet + * to determine if errors occurred. */ + enum libusb_transfer_status status; + + /** Length of the data buffer */ + int length; + + /** Actual length of data that was transferred. Read-only, and only for + * use within transfer callback function. Not valid for isochronous + * endpoint transfers. */ + int actual_length; + + /** Callback function. This will be invoked when the transfer completes, + * fails, or is cancelled. */ + libusb_transfer_cb_fn callback; + + /** User context data to pass to the callback function. */ + void *user_data; + + /** Data buffer */ + unsigned char *buffer; + + /** Number of isochronous packets. Only used for I/O with isochronous + * endpoints. */ + int num_iso_packets; + + /** Isochronous packet descriptors, for isochronous transfers only. */ + struct libusb_iso_packet_descriptor iso_packet_desc +#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) + [] /* valid C99 code */ +#else + [0] /* non-standard, but usually working code */ +#endif + ; +}; + +/** \ingroup misc + * Capabilities supported by this instance of libusb. Test if the loaded + * library supports a given capability by calling + * \ref libusb_has_capability(). + */ +enum libusb_capability { + /** The libusb_has_capability() API is available. */ + LIBUSB_CAP_HAS_CAPABILITY = 0, +}; + +int LIBUSB_CALL libusb_init(libusb_context **ctx); +void LIBUSB_CALL libusb_exit(libusb_context *ctx); +void LIBUSB_CALL libusb_set_debug(libusb_context *ctx, int level); +const struct libusb_version * LIBUSB_CALL libusb_get_version(void); +int LIBUSB_CALL libusb_has_capability(uint32_t capability); +const char * LIBUSB_CALL libusb_error_name(int errcode); + +ssize_t LIBUSB_CALL libusb_get_device_list(libusb_context *ctx, + libusb_device ***list); +void LIBUSB_CALL libusb_free_device_list(libusb_device **list, + int unref_devices); +libusb_device * LIBUSB_CALL libusb_ref_device(libusb_device *dev); +void LIBUSB_CALL libusb_unref_device(libusb_device *dev); + +int LIBUSB_CALL libusb_get_configuration(libusb_device_handle *dev, + int *config); +int LIBUSB_CALL libusb_get_device_descriptor(libusb_device *dev, + struct libusb_device_descriptor *desc); +int LIBUSB_CALL libusb_get_active_config_descriptor(libusb_device *dev, + struct libusb_config_descriptor **config); +int LIBUSB_CALL libusb_get_config_descriptor(libusb_device *dev, + uint8_t config_index, struct libusb_config_descriptor **config); +int LIBUSB_CALL libusb_get_config_descriptor_by_value(libusb_device *dev, + uint8_t bConfigurationValue, struct libusb_config_descriptor **config); +void LIBUSB_CALL libusb_free_config_descriptor( + struct libusb_config_descriptor *config); +uint8_t LIBUSB_CALL libusb_get_bus_number(libusb_device *dev); +uint8_t LIBUSB_CALL libusb_get_device_address(libusb_device *dev); +int LIBUSB_CALL libusb_get_device_speed(libusb_device *dev); +int LIBUSB_CALL libusb_get_max_packet_size(libusb_device *dev, + unsigned char endpoint); +int LIBUSB_CALL libusb_get_max_iso_packet_size(libusb_device *dev, + unsigned char endpoint); + +int LIBUSB_CALL libusb_open(libusb_device *dev, libusb_device_handle **handle); +void LIBUSB_CALL libusb_close(libusb_device_handle *dev_handle); +libusb_device * LIBUSB_CALL libusb_get_device(libusb_device_handle *dev_handle); + +int LIBUSB_CALL libusb_set_configuration(libusb_device_handle *dev, + int configuration); +int LIBUSB_CALL libusb_claim_interface(libusb_device_handle *dev, + int interface_number); +int LIBUSB_CALL libusb_release_interface(libusb_device_handle *dev, + int interface_number); + +libusb_device_handle * LIBUSB_CALL libusb_open_device_with_vid_pid( + libusb_context *ctx, uint16_t vendor_id, uint16_t product_id); + +int LIBUSB_CALL libusb_set_interface_alt_setting(libusb_device_handle *dev, + int interface_number, int alternate_setting); +int LIBUSB_CALL libusb_clear_halt(libusb_device_handle *dev, + unsigned char endpoint); +int LIBUSB_CALL libusb_reset_device(libusb_device_handle *dev); + +int LIBUSB_CALL libusb_kernel_driver_active(libusb_device_handle *dev, + int interface_number); +int LIBUSB_CALL libusb_detach_kernel_driver(libusb_device_handle *dev, + int interface_number); +int LIBUSB_CALL libusb_attach_kernel_driver(libusb_device_handle *dev, + int interface_number); + +/* async I/O */ + +/** \ingroup asyncio + * Get the data section of a control transfer. This convenience function is here + * to remind you that the data does not start until 8 bytes into the actual + * buffer, as the setup packet comes first. + * + * Calling this function only makes sense from a transfer callback function, + * or situations where you have already allocated a suitably sized buffer at + * transfer->buffer. + * + * \param transfer a transfer + * \returns pointer to the first byte of the data section + */ +static inline unsigned char *libusb_control_transfer_get_data( + struct libusb_transfer *transfer) +{ + return transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE; +} + +/** \ingroup asyncio + * Get the control setup packet of a control transfer. This convenience + * function is here to remind you that the control setup occupies the first + * 8 bytes of the transfer data buffer. + * + * Calling this function only makes sense from a transfer callback function, + * or situations where you have already allocated a suitably sized buffer at + * transfer->buffer. + * + * \param transfer a transfer + * \returns a casted pointer to the start of the transfer data buffer + */ +static inline struct libusb_control_setup *libusb_control_transfer_get_setup( + struct libusb_transfer *transfer) +{ + return (struct libusb_control_setup *) transfer->buffer; +} + +/** \ingroup asyncio + * Helper function to populate the setup packet (first 8 bytes of the data + * buffer) for a control transfer. The wIndex, wValue and wLength values should + * be given in host-endian byte order. + * + * \param buffer buffer to output the setup packet into + * \param bmRequestType see the + * \ref libusb_control_setup::bmRequestType "bmRequestType" field of + * \ref libusb_control_setup + * \param bRequest see the + * \ref libusb_control_setup::bRequest "bRequest" field of + * \ref libusb_control_setup + * \param wValue see the + * \ref libusb_control_setup::wValue "wValue" field of + * \ref libusb_control_setup + * \param wIndex see the + * \ref libusb_control_setup::wIndex "wIndex" field of + * \ref libusb_control_setup + * \param wLength see the + * \ref libusb_control_setup::wLength "wLength" field of + * \ref libusb_control_setup + */ +static inline void libusb_fill_control_setup(unsigned char *buffer, + uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, + uint16_t wLength) +{ + struct libusb_control_setup *setup = (struct libusb_control_setup *) buffer; + setup->bmRequestType = bmRequestType; + setup->bRequest = bRequest; + setup->wValue = libusb_cpu_to_le16(wValue); + setup->wIndex = libusb_cpu_to_le16(wIndex); + setup->wLength = libusb_cpu_to_le16(wLength); +} + +struct libusb_transfer * LIBUSB_CALL libusb_alloc_transfer(int iso_packets); +int LIBUSB_CALL libusb_submit_transfer(struct libusb_transfer *transfer); +int LIBUSB_CALL libusb_cancel_transfer(struct libusb_transfer *transfer); +void LIBUSB_CALL libusb_free_transfer(struct libusb_transfer *transfer); + +/** \ingroup asyncio + * Helper function to populate the required \ref libusb_transfer fields + * for a control transfer. + * + * If you pass a transfer buffer to this function, the first 8 bytes will + * be interpreted as a control setup packet, and the wLength field will be + * used to automatically populate the \ref libusb_transfer::length "length" + * field of the transfer. Therefore the recommended approach is: + * -# Allocate a suitably sized data buffer (including space for control setup) + * -# Call libusb_fill_control_setup() + * -# If this is a host-to-device transfer with a data stage, put the data + * in place after the setup packet + * -# Call this function + * -# Call libusb_submit_transfer() + * + * It is also legal to pass a NULL buffer to this function, in which case this + * function will not attempt to populate the length field. Remember that you + * must then populate the buffer and length fields later. + * + * \param transfer the transfer to populate + * \param dev_handle handle of the device that will handle the transfer + * \param buffer data buffer. If provided, this function will interpret the + * first 8 bytes as a setup packet and infer the transfer length from that. + * \param callback callback function to be invoked on transfer completion + * \param user_data user data to pass to callback function + * \param timeout timeout for the transfer in milliseconds + */ +static inline void libusb_fill_control_transfer( + struct libusb_transfer *transfer, libusb_device_handle *dev_handle, + unsigned char *buffer, libusb_transfer_cb_fn callback, void *user_data, + unsigned int timeout) +{ + struct libusb_control_setup *setup = (struct libusb_control_setup *) buffer; + transfer->dev_handle = dev_handle; + transfer->endpoint = 0; + transfer->type = LIBUSB_TRANSFER_TYPE_CONTROL; + transfer->timeout = timeout; + transfer->buffer = buffer; + if (setup) + transfer->length = LIBUSB_CONTROL_SETUP_SIZE + + libusb_le16_to_cpu(setup->wLength); + transfer->user_data = user_data; + transfer->callback = callback; +} + +/** \ingroup asyncio + * Helper function to populate the required \ref libusb_transfer fields + * for a bulk transfer. + * + * \param transfer the transfer to populate + * \param dev_handle handle of the device that will handle the transfer + * \param endpoint address of the endpoint where this transfer will be sent + * \param buffer data buffer + * \param length length of data buffer + * \param callback callback function to be invoked on transfer completion + * \param user_data user data to pass to callback function + * \param timeout timeout for the transfer in milliseconds + */ +static inline void libusb_fill_bulk_transfer(struct libusb_transfer *transfer, + libusb_device_handle *dev_handle, unsigned char endpoint, + unsigned char *buffer, int length, libusb_transfer_cb_fn callback, + void *user_data, unsigned int timeout) +{ + transfer->dev_handle = dev_handle; + transfer->endpoint = endpoint; + transfer->type = LIBUSB_TRANSFER_TYPE_BULK; + transfer->timeout = timeout; + transfer->buffer = buffer; + transfer->length = length; + transfer->user_data = user_data; + transfer->callback = callback; +} + +/** \ingroup asyncio + * Helper function to populate the required \ref libusb_transfer fields + * for an interrupt transfer. + * + * \param transfer the transfer to populate + * \param dev_handle handle of the device that will handle the transfer + * \param endpoint address of the endpoint where this transfer will be sent + * \param buffer data buffer + * \param length length of data buffer + * \param callback callback function to be invoked on transfer completion + * \param user_data user data to pass to callback function + * \param timeout timeout for the transfer in milliseconds + */ +static inline void libusb_fill_interrupt_transfer( + struct libusb_transfer *transfer, libusb_device_handle *dev_handle, + unsigned char endpoint, unsigned char *buffer, int length, + libusb_transfer_cb_fn callback, void *user_data, unsigned int timeout) +{ + transfer->dev_handle = dev_handle; + transfer->endpoint = endpoint; + transfer->type = LIBUSB_TRANSFER_TYPE_INTERRUPT; + transfer->timeout = timeout; + transfer->buffer = buffer; + transfer->length = length; + transfer->user_data = user_data; + transfer->callback = callback; +} + +/** \ingroup asyncio + * Helper function to populate the required \ref libusb_transfer fields + * for an isochronous transfer. + * + * \param transfer the transfer to populate + * \param dev_handle handle of the device that will handle the transfer + * \param endpoint address of the endpoint where this transfer will be sent + * \param buffer data buffer + * \param length length of data buffer + * \param num_iso_packets the number of isochronous packets + * \param callback callback function to be invoked on transfer completion + * \param user_data user data to pass to callback function + * \param timeout timeout for the transfer in milliseconds + */ +static inline void libusb_fill_iso_transfer(struct libusb_transfer *transfer, + libusb_device_handle *dev_handle, unsigned char endpoint, + unsigned char *buffer, int length, int num_iso_packets, + libusb_transfer_cb_fn callback, void *user_data, unsigned int timeout) +{ + transfer->dev_handle = dev_handle; + transfer->endpoint = endpoint; + transfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS; + transfer->timeout = timeout; + transfer->buffer = buffer; + transfer->length = length; + transfer->num_iso_packets = num_iso_packets; + transfer->user_data = user_data; + transfer->callback = callback; +} + +/** \ingroup asyncio + * Convenience function to set the length of all packets in an isochronous + * transfer, based on the num_iso_packets field in the transfer structure. + * + * \param transfer a transfer + * \param length the length to set in each isochronous packet descriptor + * \see libusb_get_max_packet_size() + */ +static inline void libusb_set_iso_packet_lengths( + struct libusb_transfer *transfer, unsigned int length) +{ + int i; + for (i = 0; i < transfer->num_iso_packets; i++) + transfer->iso_packet_desc[i].length = length; +} + +/** \ingroup asyncio + * Convenience function to locate the position of an isochronous packet + * within the buffer of an isochronous transfer. + * + * This is a thorough function which loops through all preceding packets, + * accumulating their lengths to find the position of the specified packet. + * Typically you will assign equal lengths to each packet in the transfer, + * and hence the above method is sub-optimal. You may wish to use + * libusb_get_iso_packet_buffer_simple() instead. + * + * \param transfer a transfer + * \param packet the packet to return the address of + * \returns the base address of the packet buffer inside the transfer buffer, + * or NULL if the packet does not exist. + * \see libusb_get_iso_packet_buffer_simple() + */ +static inline unsigned char *libusb_get_iso_packet_buffer( + struct libusb_transfer *transfer, unsigned int packet) +{ + int i; + size_t offset = 0; + int _packet; + + /* oops..slight bug in the API. packet is an unsigned int, but we use + * signed integers almost everywhere else. range-check and convert to + * signed to avoid compiler warnings. FIXME for libusb-2. */ + if (packet > INT_MAX) + return NULL; + _packet = packet; + + if (_packet >= transfer->num_iso_packets) + return NULL; + + for (i = 0; i < _packet; i++) + offset += transfer->iso_packet_desc[i].length; + + return transfer->buffer + offset; +} + +/** \ingroup asyncio + * Convenience function to locate the position of an isochronous packet + * within the buffer of an isochronous transfer, for transfers where each + * packet is of identical size. + * + * This function relies on the assumption that every packet within the transfer + * is of identical size to the first packet. Calculating the location of + * the packet buffer is then just a simple calculation: + * <tt>buffer + (packet_size * packet)</tt> + * + * Do not use this function on transfers other than those that have identical + * packet lengths for each packet. + * + * \param transfer a transfer + * \param packet the packet to return the address of + * \returns the base address of the packet buffer inside the transfer buffer, + * or NULL if the packet does not exist. + * \see libusb_get_iso_packet_buffer() + */ +static inline unsigned char *libusb_get_iso_packet_buffer_simple( + struct libusb_transfer *transfer, unsigned int packet) +{ + int _packet; + + /* oops..slight bug in the API. packet is an unsigned int, but we use + * signed integers almost everywhere else. range-check and convert to + * signed to avoid compiler warnings. FIXME for libusb-2. */ + if (packet > INT_MAX) + return NULL; + _packet = packet; + + if (_packet >= transfer->num_iso_packets) + return NULL; + + return transfer->buffer + (transfer->iso_packet_desc[0].length * _packet); +} + +/* sync I/O */ + +int LIBUSB_CALL libusb_control_transfer(libusb_device_handle *dev_handle, + uint8_t request_type, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, + unsigned char *data, uint16_t wLength, unsigned int timeout); + +int LIBUSB_CALL libusb_bulk_transfer(libusb_device_handle *dev_handle, + unsigned char endpoint, unsigned char *data, int length, + int *actual_length, unsigned int timeout); + +int LIBUSB_CALL libusb_interrupt_transfer(libusb_device_handle *dev_handle, + unsigned char endpoint, unsigned char *data, int length, + int *actual_length, unsigned int timeout); + +/** \ingroup desc + * Retrieve a descriptor from the default control pipe. + * This is a convenience function which formulates the appropriate control + * message to retrieve the descriptor. + * + * \param dev a device handle + * \param desc_type the descriptor type, see \ref libusb_descriptor_type + * \param desc_index the index of the descriptor to retrieve + * \param data output buffer for descriptor + * \param length size of data buffer + * \returns number of bytes returned in data, or LIBUSB_ERROR code on failure + */ +static inline int libusb_get_descriptor(libusb_device_handle *dev, + uint8_t desc_type, uint8_t desc_index, unsigned char *data, int length) +{ + return libusb_control_transfer(dev, LIBUSB_ENDPOINT_IN, + LIBUSB_REQUEST_GET_DESCRIPTOR, (desc_type << 8) | desc_index, 0, data, + (uint16_t) length, 1000); +} + +/** \ingroup desc + * Retrieve a descriptor from a device. + * This is a convenience function which formulates the appropriate control + * message to retrieve the descriptor. The string returned is Unicode, as + * detailed in the USB specifications. + * + * \param dev a device handle + * \param desc_index the index of the descriptor to retrieve + * \param langid the language ID for the string descriptor + * \param data output buffer for descriptor + * \param length size of data buffer + * \returns number of bytes returned in data, or LIBUSB_ERROR code on failure + * \see libusb_get_string_descriptor_ascii() + */ +static inline int libusb_get_string_descriptor(libusb_device_handle *dev, + uint8_t desc_index, uint16_t langid, unsigned char *data, int length) +{ + return libusb_control_transfer(dev, LIBUSB_ENDPOINT_IN, + LIBUSB_REQUEST_GET_DESCRIPTOR, (uint16_t)((LIBUSB_DT_STRING << 8) | desc_index), + langid, data, (uint16_t) length, 1000); +} + +int LIBUSB_CALL libusb_get_string_descriptor_ascii(libusb_device_handle *dev, + uint8_t desc_index, unsigned char *data, int length); + +/* polling and timeouts */ + +int LIBUSB_CALL libusb_try_lock_events(libusb_context *ctx); +void LIBUSB_CALL libusb_lock_events(libusb_context *ctx); +void LIBUSB_CALL libusb_unlock_events(libusb_context *ctx); +int LIBUSB_CALL libusb_event_handling_ok(libusb_context *ctx); +int LIBUSB_CALL libusb_event_handler_active(libusb_context *ctx); +void LIBUSB_CALL libusb_lock_event_waiters(libusb_context *ctx); +void LIBUSB_CALL libusb_unlock_event_waiters(libusb_context *ctx); +int LIBUSB_CALL libusb_wait_for_event(libusb_context *ctx, struct timeval *tv); + +int LIBUSB_CALL libusb_handle_events_timeout(libusb_context *ctx, + struct timeval *tv); +int LIBUSB_CALL libusb_handle_events_timeout_completed(libusb_context *ctx, + struct timeval *tv, int *completed); +int LIBUSB_CALL libusb_handle_events(libusb_context *ctx); +int LIBUSB_CALL libusb_handle_events_completed(libusb_context *ctx, int *completed); +int LIBUSB_CALL libusb_handle_events_locked(libusb_context *ctx, + struct timeval *tv); +int LIBUSB_CALL libusb_pollfds_handle_timeouts(libusb_context *ctx); +int LIBUSB_CALL libusb_get_next_timeout(libusb_context *ctx, + struct timeval *tv); + +/** \ingroup poll + * File descriptor for polling + */ +struct libusb_pollfd { + /** Numeric file descriptor */ + int fd; + + /** Event flags to poll for from <poll.h>. POLLIN indicates that you + * should monitor this file descriptor for becoming ready to read from, + * and POLLOUT indicates that you should monitor this file descriptor for + * nonblocking write readiness. */ + short events; +}; + +/** \ingroup poll + * Callback function, invoked when a new file descriptor should be added + * to the set of file descriptors monitored for events. + * \param fd the new file descriptor + * \param events events to monitor for, see \ref libusb_pollfd for a + * description + * \param user_data User data pointer specified in + * libusb_set_pollfd_notifiers() call + * \see libusb_set_pollfd_notifiers() + */ +typedef void (LIBUSB_CALL *libusb_pollfd_added_cb)(int fd, short events, + void *user_data); + +/** \ingroup poll + * Callback function, invoked when a file descriptor should be removed from + * the set of file descriptors being monitored for events. After returning + * from this callback, do not use that file descriptor again. + * \param fd the file descriptor to stop monitoring + * \param user_data User data pointer specified in + * libusb_set_pollfd_notifiers() call + * \see libusb_set_pollfd_notifiers() + */ +typedef void (LIBUSB_CALL *libusb_pollfd_removed_cb)(int fd, void *user_data); + +const struct libusb_pollfd ** LIBUSB_CALL libusb_get_pollfds( + libusb_context *ctx); +void LIBUSB_CALL libusb_set_pollfd_notifiers(libusb_context *ctx, + libusb_pollfd_added_cb added_cb, libusb_pollfd_removed_cb removed_cb, + void *user_data); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/libusb/libusbi.h b/libusb/libusbi.h new file mode 100644 index 0000000..976be0d --- /dev/null +++ b/libusb/libusbi.h @@ -0,0 +1,935 @@ +/* + * Internal header for libusb + * Copyright (C) 2007-2009 Daniel Drake <dsd@gentoo.org> + * Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef LIBUSBI_H +#define LIBUSBI_H + +#include <config.h> + +#include <stddef.h> +#include <stdint.h> +#include <time.h> +#include <stdarg.h> +#ifdef HAVE_POLL_H +#include <poll.h> +#endif + +#include <libusb.h> +#include <version.h> + +/* Inside the libusb code, mark all public functions as follows: + * return_type API_EXPORTED function_name(params) { ... } + * But if the function returns a pointer, mark it as follows: + * DEFAULT_VISIBILITY return_type * LIBUSB_CALL function_name(params) { ... } + * In the libusb public header, mark all declarations as: + * return_type LIBUSB_CALL function_name(params); + */ +#define API_EXPORTED LIBUSB_CALL DEFAULT_VISIBILITY + +#define DEVICE_DESC_LENGTH 18 + +#define USB_MAXENDPOINTS 32 +#define USB_MAXINTERFACES 32 +#define USB_MAXCONFIG 8 + +struct list_head { + struct list_head *prev, *next; +}; + +/* Get an entry from the list + * ptr - the address of this list_head element in "type" + * type - the data type that contains "member" + * member - the list_head element in "type" + */ +#define list_entry(ptr, type, member) \ + ((type *)((uintptr_t)(ptr) - (uintptr_t)(&((type *)0L)->member))) + +/* Get each entry from a list + * pos - A structure pointer has a "member" element + * head - list head + * member - the list_head element in "pos" + * type - the type of the first parameter + */ +#define list_for_each_entry(pos, head, member, type) \ + for (pos = list_entry((head)->next, type, member); \ + &pos->member != (head); \ + pos = list_entry(pos->member.next, type, member)) + +#define list_for_each_entry_safe(pos, n, head, member, type) \ + for (pos = list_entry((head)->next, type, member), \ + n = list_entry(pos->member.next, type, member); \ + &pos->member != (head); \ + pos = n, n = list_entry(n->member.next, type, member)) + +#define list_empty(entry) ((entry)->next == (entry)) + +static inline void list_init(struct list_head *entry) +{ + entry->prev = entry->next = entry; +} + +static inline void list_add(struct list_head *entry, struct list_head *head) +{ + entry->next = head->next; + entry->prev = head; + + head->next->prev = entry; + head->next = entry; +} + +static inline void list_add_tail(struct list_head *entry, + struct list_head *head) +{ + entry->next = head; + entry->prev = head->prev; + + head->prev->next = entry; + head->prev = entry; +} + +static inline void list_del(struct list_head *entry) +{ + entry->next->prev = entry->prev; + entry->prev->next = entry->next; +} + +#define container_of(ptr, type, member) ({ \ + const typeof( ((type *)0)->member ) *mptr = (ptr); \ + (type *)( (char *)mptr - offsetof(type,member) );}) + +#define MIN(a, b) ((a) < (b) ? (a) : (b)) +#define MAX(a, b) ((a) > (b) ? (a) : (b)) + +#define TIMESPEC_IS_SET(ts) ((ts)->tv_sec != 0 || (ts)->tv_nsec != 0) + +enum usbi_log_level { + LOG_LEVEL_DEBUG, + LOG_LEVEL_INFO, + LOG_LEVEL_WARNING, + LOG_LEVEL_ERROR, +}; + +void usbi_log(struct libusb_context *ctx, enum usbi_log_level level, + const char *function, const char *format, ...); + +void usbi_log_v(struct libusb_context *ctx, enum usbi_log_level level, + const char *function, const char *format, va_list args); + +#if !defined(_MSC_VER) || _MSC_VER >= 1400 + +#ifdef ENABLE_LOGGING +#define _usbi_log(ctx, level, ...) usbi_log(ctx, level, __FUNCTION__, __VA_ARGS__) +#else +#define _usbi_log(ctx, level, ...) do { (void)(ctx); } while(0) +#endif + +#ifdef ENABLE_DEBUG_LOGGING +#define usbi_dbg(...) _usbi_log(NULL, LOG_LEVEL_DEBUG, __VA_ARGS__) +#else +#define usbi_dbg(...) do {} while(0) +#endif + +#define usbi_info(ctx, ...) _usbi_log(ctx, LOG_LEVEL_INFO, __VA_ARGS__) +#define usbi_warn(ctx, ...) _usbi_log(ctx, LOG_LEVEL_WARNING, __VA_ARGS__) +#define usbi_err(ctx, ...) _usbi_log(ctx, LOG_LEVEL_ERROR, __VA_ARGS__) + +#else /* !defined(_MSC_VER) || _MSC_VER >= 1400 */ + +/* Old MS compilers don't support variadic macros. The code is simple, so we + * repeat it for each loglevel. Note that the debug case is special. + * + * Support for variadic macros was introduced in Visual C++ 2005. + * http://msdn.microsoft.com/en-us/library/ms177415%28v=VS.80%29.aspx + */ + +static inline void usbi_info(struct libusb_context *ctx, const char *fmt, ...) +{ +#ifdef ENABLE_LOGGING + va_list args; + va_start(args, fmt); + usbi_log_v(ctx, LOG_LEVEL_INFO, "", fmt, args); + va_end(args); +#else + (void)ctx; +#endif +} + +static inline void usbi_warn(struct libusb_context *ctx, const char *fmt, ...) +{ +#ifdef ENABLE_LOGGING + va_list args; + va_start(args, fmt); + usbi_log_v(ctx, LOG_LEVEL_WARNING, "", fmt, args); + va_end(args); +#else + (void)ctx; +#endif +} + +static inline void usbi_err(struct libusb_context *ctx, const char *fmt, ...) +{ +#ifdef ENABLE_LOGGING + va_list args; + va_start(args, fmt); + usbi_log_v(ctx, LOG_LEVEL_ERROR, "", fmt, args); + va_end(args); +#else + (void)ctx; +#endif +} + +static inline void usbi_dbg(const char *fmt, ...) +{ +#ifdef ENABLE_DEBUG_LOGGING + va_list args; + va_start(args, fmt); + usbi_log_v(NULL, LOG_LEVEL_DEBUG, "", fmt, args); + va_end(args); +#else + (void)fmt; +#endif +} + +#endif /* !defined(_MSC_VER) || _MSC_VER >= 1400 */ + +#define USBI_GET_CONTEXT(ctx) if (!(ctx)) (ctx) = usbi_default_context +#define DEVICE_CTX(dev) ((dev)->ctx) +#define HANDLE_CTX(handle) (DEVICE_CTX((handle)->dev)) +#define TRANSFER_CTX(transfer) (HANDLE_CTX((transfer)->dev_handle)) +#define ITRANSFER_CTX(transfer) \ + (TRANSFER_CTX(USBI_TRANSFER_TO_LIBUSB_TRANSFER(transfer))) + +#define IS_EPIN(ep) (0 != ((ep) & LIBUSB_ENDPOINT_IN)) +#define IS_EPOUT(ep) (!IS_EPIN(ep)) +#define IS_XFERIN(xfer) (0 != ((xfer)->endpoint & LIBUSB_ENDPOINT_IN)) +#define IS_XFEROUT(xfer) (!IS_XFERIN(xfer)) + +/* Internal abstractions for thread synchronization and poll */ +#if defined(THREADS_POSIX) +#include <os/threads_posix.h> +#elif defined(OS_WINDOWS) +#include <os/threads_windows.h> +#endif + +#if defined(OS_LINUX) || defined(OS_DARWIN) || defined(OS_OPENBSD) +#include <unistd.h> +#include <os/poll_posix.h> +#elif defined(OS_WINDOWS) +#include <os/poll_windows.h> +#endif + +#if defined(OS_WINDOWS) && !defined(__GCC__) +#undef HAVE_GETTIMEOFDAY +int usbi_gettimeofday(struct timeval *tp, void *tzp); +#define LIBUSB_GETTIMEOFDAY_WIN32 +#define HAVE_USBI_GETTIMEOFDAY +#else +#ifdef HAVE_GETTIMEOFDAY +#define usbi_gettimeofday(tv, tz) gettimeofday((tv), (tz)) +#define HAVE_USBI_GETTIMEOFDAY +#endif +#endif + +extern struct libusb_context *usbi_default_context; + +struct libusb_context { + int debug; + int debug_fixed; + + /* internal control pipe, used for interrupting event handling when + * something needs to modify poll fds. */ + int ctrl_pipe[2]; + + struct list_head usb_devs; + usbi_mutex_t usb_devs_lock; + + /* A list of open handles. Backends are free to traverse this if required. + */ + struct list_head open_devs; + usbi_mutex_t open_devs_lock; + + /* this is a list of in-flight transfer handles, sorted by timeout + * expiration. URBs to timeout the soonest are placed at the beginning of + * the list, URBs that will time out later are placed after, and urbs with + * infinite timeout are always placed at the very end. */ + struct list_head flying_transfers; + usbi_mutex_t flying_transfers_lock; + + /* list of poll fds */ + struct list_head pollfds; + usbi_mutex_t pollfds_lock; + + /* a counter that is set when we want to interrupt event handling, in order + * to modify the poll fd set. and a lock to protect it. */ + unsigned int pollfd_modify; + usbi_mutex_t pollfd_modify_lock; + + /* user callbacks for pollfd changes */ + libusb_pollfd_added_cb fd_added_cb; + libusb_pollfd_removed_cb fd_removed_cb; + void *fd_cb_user_data; + + /* ensures that only one thread is handling events at any one time */ + usbi_mutex_t events_lock; + + /* used to see if there is an active thread doing event handling */ + int event_handler_active; + + /* used to wait for event completion in threads other than the one that is + * event handling */ + usbi_mutex_t event_waiters_lock; + usbi_cond_t event_waiters_cond; + +#ifdef USBI_TIMERFD_AVAILABLE + /* used for timeout handling, if supported by OS. + * this timerfd is maintained to trigger on the next pending timeout */ + int timerfd; +#endif +}; + +#ifdef USBI_TIMERFD_AVAILABLE +#define usbi_using_timerfd(ctx) ((ctx)->timerfd >= 0) +#else +#define usbi_using_timerfd(ctx) (0) +#endif + +struct libusb_device { + /* lock protects refcnt, everything else is finalized at initialization + * time */ + usbi_mutex_t lock; + int refcnt; + + struct libusb_context *ctx; + + uint8_t bus_number; + uint8_t device_address; + uint8_t num_configurations; + enum libusb_speed speed; + + struct list_head list; + unsigned long session_data; + unsigned char os_priv[0]; +}; + +struct libusb_device_handle { + /* lock protects claimed_interfaces */ + usbi_mutex_t lock; + unsigned long claimed_interfaces; + + struct list_head list; + struct libusb_device *dev; + unsigned char os_priv[0]; +}; + +enum { + USBI_CLOCK_MONOTONIC, + USBI_CLOCK_REALTIME +}; + +/* in-memory transfer layout: + * + * 1. struct usbi_transfer + * 2. struct libusb_transfer (which includes iso packets) [variable size] + * 3. os private data [variable size] + * + * from a libusb_transfer, you can get the usbi_transfer by rewinding the + * appropriate number of bytes. + * the usbi_transfer includes the number of allocated packets, so you can + * determine the size of the transfer and hence the start and length of the + * OS-private data. + */ + +struct usbi_transfer { + int num_iso_packets; + struct list_head list; + struct timeval timeout; + int transferred; + uint8_t flags; + + /* this lock is held during libusb_submit_transfer() and + * libusb_cancel_transfer() (allowing the OS backend to prevent duplicate + * cancellation, submission-during-cancellation, etc). the OS backend + * should also take this lock in the handle_events path, to prevent the user + * cancelling the transfer from another thread while you are processing + * its completion (presumably there would be races within your OS backend + * if this were possible). */ + usbi_mutex_t lock; +}; + +enum usbi_transfer_flags { + /* The transfer has timed out */ + USBI_TRANSFER_TIMED_OUT = 1 << 0, + + /* Set by backend submit_transfer() if the OS handles timeout */ + USBI_TRANSFER_OS_HANDLES_TIMEOUT = 1 << 1, + + /* Cancellation was requested via libusb_cancel_transfer() */ + USBI_TRANSFER_CANCELLING = 1 << 2, + + /* Operation on the transfer failed because the device disappeared */ + USBI_TRANSFER_DEVICE_DISAPPEARED = 1 << 3, +}; + +#define USBI_TRANSFER_TO_LIBUSB_TRANSFER(transfer) \ + ((struct libusb_transfer *)(((unsigned char *)(transfer)) \ + + sizeof(struct usbi_transfer))) +#define LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer) \ + ((struct usbi_transfer *)(((unsigned char *)(transfer)) \ + - sizeof(struct usbi_transfer))) + +static inline void *usbi_transfer_get_os_priv(struct usbi_transfer *transfer) +{ + return ((unsigned char *)transfer) + sizeof(struct usbi_transfer) + + sizeof(struct libusb_transfer) + + (transfer->num_iso_packets + * sizeof(struct libusb_iso_packet_descriptor)); +} + +/* bus structures */ + +/* All standard descriptors have these 2 fields in common */ +struct usb_descriptor_header { + uint8_t bLength; + uint8_t bDescriptorType; +}; + +/* shared data and functions */ + +int usbi_io_init(struct libusb_context *ctx); +void usbi_io_exit(struct libusb_context *ctx); + +struct libusb_device *usbi_alloc_device(struct libusb_context *ctx, + unsigned long session_id); +struct libusb_device *usbi_get_device_by_session_id(struct libusb_context *ctx, + unsigned long session_id); +int usbi_sanitize_device(struct libusb_device *dev); +void usbi_handle_disconnect(struct libusb_device_handle *handle); + +int usbi_handle_transfer_completion(struct usbi_transfer *itransfer, + enum libusb_transfer_status status); +int usbi_handle_transfer_cancellation(struct usbi_transfer *transfer); + +int usbi_parse_descriptor(unsigned char *source, const char *descriptor, + void *dest, int host_endian); +int usbi_get_config_index_by_value(struct libusb_device *dev, + uint8_t bConfigurationValue, int *idx); + +/* polling */ + +struct usbi_pollfd { + /* must come first */ + struct libusb_pollfd pollfd; + + struct list_head list; +}; + +int usbi_add_pollfd(struct libusb_context *ctx, int fd, short events); +void usbi_remove_pollfd(struct libusb_context *ctx, int fd); +void usbi_fd_notification(struct libusb_context *ctx); + +/* device discovery */ + +/* we traverse usbfs without knowing how many devices we are going to find. + * so we create this discovered_devs model which is similar to a linked-list + * which grows when required. it can be freed once discovery has completed, + * eliminating the need for a list node in the libusb_device structure + * itself. */ +struct discovered_devs { + size_t len; + size_t capacity; + struct libusb_device *devices[0]; +}; + +struct discovered_devs *discovered_devs_append( + struct discovered_devs *discdevs, struct libusb_device *dev); + +/* OS abstraction */ + +/* This is the interface that OS backends need to implement. + * All fields are mandatory, except ones explicitly noted as optional. */ +struct usbi_os_backend { + /* A human-readable name for your backend, e.g. "Linux usbfs" */ + const char *name; + + /* Perform initialization of your backend. You might use this function + * to determine specific capabilities of the system, allocate required + * data structures for later, etc. + * + * This function is called when a libusb user initializes the library + * prior to use. + * + * Return 0 on success, or a LIBUSB_ERROR code on failure. + */ + int (*init)(struct libusb_context *ctx); + + /* Deinitialization. Optional. This function should destroy anything + * that was set up by init. + * + * This function is called when the user deinitializes the library. + */ + void (*exit)(void); + + /* Enumerate all the USB devices on the system, returning them in a list + * of discovered devices. + * + * Your implementation should enumerate all devices on the system, + * regardless of whether they have been seen before or not. + * + * When you have found a device, compute a session ID for it. The session + * ID should uniquely represent that particular device for that particular + * connection session since boot (i.e. if you disconnect and reconnect a + * device immediately after, it should be assigned a different session ID). + * If your OS cannot provide a unique session ID as described above, + * presenting a session ID of (bus_number << 8 | device_address) should + * be sufficient. Bus numbers and device addresses wrap and get reused, + * but that is an unlikely case. + * + * After computing a session ID for a device, call + * usbi_get_device_by_session_id(). This function checks if libusb already + * knows about the device, and if so, it provides you with a libusb_device + * structure for it. + * + * If usbi_get_device_by_session_id() returns NULL, it is time to allocate + * a new device structure for the device. Call usbi_alloc_device() to + * obtain a new libusb_device structure with reference count 1. Populate + * the bus_number and device_address attributes of the new device, and + * perform any other internal backend initialization you need to do. At + * this point, you should be ready to provide device descriptors and so + * on through the get_*_descriptor functions. Finally, call + * usbi_sanitize_device() to perform some final sanity checks on the + * device. Assuming all of the above succeeded, we can now continue. + * If any of the above failed, remember to unreference the device that + * was returned by usbi_alloc_device(). + * + * At this stage we have a populated libusb_device structure (either one + * that was found earlier, or one that we have just allocated and + * populated). This can now be added to the discovered devices list + * using discovered_devs_append(). Note that discovered_devs_append() + * may reallocate the list, returning a new location for it, and also + * note that reallocation can fail. Your backend should handle these + * error conditions appropriately. + * + * This function should not generate any bus I/O and should not block. + * If I/O is required (e.g. reading the active configuration value), it is + * OK to ignore these suggestions :) + * + * This function is executed when the user wishes to retrieve a list + * of USB devices connected to the system. + * + * Return 0 on success, or a LIBUSB_ERROR code on failure. + */ + int (*get_device_list)(struct libusb_context *ctx, + struct discovered_devs **discdevs); + + /* Open a device for I/O and other USB operations. The device handle + * is preallocated for you, you can retrieve the device in question + * through handle->dev. + * + * Your backend should allocate any internal resources required for I/O + * and other operations so that those operations can happen (hopefully) + * without hiccup. This is also a good place to inform libusb that it + * should monitor certain file descriptors related to this device - + * see the usbi_add_pollfd() function. + * + * This function should not generate any bus I/O and should not block. + * + * This function is called when the user attempts to obtain a device + * handle for a device. + * + * Return: + * - 0 on success + * - LIBUSB_ERROR_ACCESS if the user has insufficient permissions + * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since + * discovery + * - another LIBUSB_ERROR code on other failure + * + * Do not worry about freeing the handle on failed open, the upper layers + * do this for you. + */ + int (*open)(struct libusb_device_handle *handle); + + /* Close a device such that the handle cannot be used again. Your backend + * should destroy any resources that were allocated in the open path. + * This may also be a good place to call usbi_remove_pollfd() to inform + * libusb of any file descriptors associated with this device that should + * no longer be monitored. + * + * This function is called when the user closes a device handle. + */ + void (*close)(struct libusb_device_handle *handle); + + /* Retrieve the device descriptor from a device. + * + * The descriptor should be retrieved from memory, NOT via bus I/O to the + * device. This means that you may have to cache it in a private structure + * during get_device_list enumeration. Alternatively, you may be able + * to retrieve it from a kernel interface (some Linux setups can do this) + * still without generating bus I/O. + * + * This function is expected to write DEVICE_DESC_LENGTH (18) bytes into + * buffer, which is guaranteed to be big enough. + * + * This function is called when sanity-checking a device before adding + * it to the list of discovered devices, and also when the user requests + * to read the device descriptor. + * + * This function is expected to return the descriptor in bus-endian format + * (LE). If it returns the multi-byte values in host-endian format, + * set the host_endian output parameter to "1". + * + * Return 0 on success or a LIBUSB_ERROR code on failure. + */ + int (*get_device_descriptor)(struct libusb_device *device, + unsigned char *buffer, int *host_endian); + + /* Get the ACTIVE configuration descriptor for a device. + * + * The descriptor should be retrieved from memory, NOT via bus I/O to the + * device. This means that you may have to cache it in a private structure + * during get_device_list enumeration. You may also have to keep track + * of which configuration is active when the user changes it. + * + * This function is expected to write len bytes of data into buffer, which + * is guaranteed to be big enough. If you can only do a partial write, + * return an error code. + * + * This function is expected to return the descriptor in bus-endian format + * (LE). If it returns the multi-byte values in host-endian format, + * set the host_endian output parameter to "1". + * + * Return: + * - 0 on success + * - LIBUSB_ERROR_NOT_FOUND if the device is in unconfigured state + * - another LIBUSB_ERROR code on other failure + */ + int (*get_active_config_descriptor)(struct libusb_device *device, + unsigned char *buffer, size_t len, int *host_endian); + + /* Get a specific configuration descriptor for a device. + * + * The descriptor should be retrieved from memory, NOT via bus I/O to the + * device. This means that you may have to cache it in a private structure + * during get_device_list enumeration. + * + * The requested descriptor is expressed as a zero-based index (i.e. 0 + * indicates that we are requesting the first descriptor). The index does + * not (necessarily) equal the bConfigurationValue of the configuration + * being requested. + * + * This function is expected to write len bytes of data into buffer, which + * is guaranteed to be big enough. If you can only do a partial write, + * return an error code. + * + * This function is expected to return the descriptor in bus-endian format + * (LE). If it returns the multi-byte values in host-endian format, + * set the host_endian output parameter to "1". + * + * Return 0 on success or a LIBUSB_ERROR code on failure. + */ + int (*get_config_descriptor)(struct libusb_device *device, + uint8_t config_index, unsigned char *buffer, size_t len, + int *host_endian); + + /* Get the bConfigurationValue for the active configuration for a device. + * Optional. This should only be implemented if you can retrieve it from + * cache (don't generate I/O). + * + * If you cannot retrieve this from cache, either do not implement this + * function, or return LIBUSB_ERROR_NOT_SUPPORTED. This will cause + * libusb to retrieve the information through a standard control transfer. + * + * This function must be non-blocking. + * Return: + * - 0 on success + * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it + * was opened + * - LIBUSB_ERROR_NOT_SUPPORTED if the value cannot be retrieved without + * blocking + * - another LIBUSB_ERROR code on other failure. + */ + int (*get_configuration)(struct libusb_device_handle *handle, int *config); + + /* Set the active configuration for a device. + * + * A configuration value of -1 should put the device in unconfigured state. + * + * This function can block. + * + * Return: + * - 0 on success + * - LIBUSB_ERROR_NOT_FOUND if the configuration does not exist + * - LIBUSB_ERROR_BUSY if interfaces are currently claimed (and hence + * configuration cannot be changed) + * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it + * was opened + * - another LIBUSB_ERROR code on other failure. + */ + int (*set_configuration)(struct libusb_device_handle *handle, int config); + + /* Claim an interface. When claimed, the application can then perform + * I/O to an interface's endpoints. + * + * This function should not generate any bus I/O and should not block. + * Interface claiming is a logical operation that simply ensures that + * no other drivers/applications are using the interface, and after + * claiming, no other drivers/applicatiosn can use the interface because + * we now "own" it. + * + * Return: + * - 0 on success + * - LIBUSB_ERROR_NOT_FOUND if the interface does not exist + * - LIBUSB_ERROR_BUSY if the interface is in use by another driver/app + * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it + * was opened + * - another LIBUSB_ERROR code on other failure + */ + int (*claim_interface)(struct libusb_device_handle *handle, int interface_number); + + /* Release a previously claimed interface. + * + * This function should also generate a SET_INTERFACE control request, + * resetting the alternate setting of that interface to 0. It's OK for + * this function to block as a result. + * + * You will only ever be asked to release an interface which was + * successfully claimed earlier. + * + * Return: + * - 0 on success + * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it + * was opened + * - another LIBUSB_ERROR code on other failure + */ + int (*release_interface)(struct libusb_device_handle *handle, int interface_number); + + /* Set the alternate setting for an interface. + * + * You will only ever be asked to set the alternate setting for an + * interface which was successfully claimed earlier. + * + * It's OK for this function to block. + * + * Return: + * - 0 on success + * - LIBUSB_ERROR_NOT_FOUND if the alternate setting does not exist + * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it + * was opened + * - another LIBUSB_ERROR code on other failure + */ + int (*set_interface_altsetting)(struct libusb_device_handle *handle, + int interface_number, int altsetting); + + /* Clear a halt/stall condition on an endpoint. + * + * It's OK for this function to block. + * + * Return: + * - 0 on success + * - LIBUSB_ERROR_NOT_FOUND if the endpoint does not exist + * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it + * was opened + * - another LIBUSB_ERROR code on other failure + */ + int (*clear_halt)(struct libusb_device_handle *handle, + unsigned char endpoint); + + /* Perform a USB port reset to reinitialize a device. + * + * If possible, the handle should still be usable after the reset + * completes, assuming that the device descriptors did not change during + * reset and all previous interface state can be restored. + * + * If something changes, or you cannot easily locate/verify the resetted + * device, return LIBUSB_ERROR_NOT_FOUND. This prompts the application + * to close the old handle and re-enumerate the device. + * + * Return: + * - 0 on success + * - LIBUSB_ERROR_NOT_FOUND if re-enumeration is required, or if the device + * has been disconnected since it was opened + * - another LIBUSB_ERROR code on other failure + */ + int (*reset_device)(struct libusb_device_handle *handle); + + /* Determine if a kernel driver is active on an interface. Optional. + * + * The presence of a kernel driver on an interface indicates that any + * calls to claim_interface would fail with the LIBUSB_ERROR_BUSY code. + * + * Return: + * - 0 if no driver is active + * - 1 if a driver is active + * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it + * was opened + * - another LIBUSB_ERROR code on other failure + */ + int (*kernel_driver_active)(struct libusb_device_handle *handle, + int interface_number); + + /* Detach a kernel driver from an interface. Optional. + * + * After detaching a kernel driver, the interface should be available + * for claim. + * + * Return: + * - 0 on success + * - LIBUSB_ERROR_NOT_FOUND if no kernel driver was active + * - LIBUSB_ERROR_INVALID_PARAM if the interface does not exist + * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it + * was opened + * - another LIBUSB_ERROR code on other failure + */ + int (*detach_kernel_driver)(struct libusb_device_handle *handle, + int interface_number); + + /* Attach a kernel driver to an interface. Optional. + * + * Reattach a kernel driver to the device. + * + * Return: + * - 0 on success + * - LIBUSB_ERROR_NOT_FOUND if no kernel driver was active + * - LIBUSB_ERROR_INVALID_PARAM if the interface does not exist + * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it + * was opened + * - LIBUSB_ERROR_BUSY if a program or driver has claimed the interface, + * preventing reattachment + * - another LIBUSB_ERROR code on other failure + */ + int (*attach_kernel_driver)(struct libusb_device_handle *handle, + int interface_number); + + /* Destroy a device. Optional. + * + * This function is called when the last reference to a device is + * destroyed. It should free any resources allocated in the get_device_list + * path. + */ + void (*destroy_device)(struct libusb_device *dev); + + /* Submit a transfer. Your implementation should take the transfer, + * morph it into whatever form your platform requires, and submit it + * asynchronously. + * + * This function must not block. + * + * Return: + * - 0 on success + * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * - another LIBUSB_ERROR code on other failure + */ + int (*submit_transfer)(struct usbi_transfer *itransfer); + + /* Cancel a previously submitted transfer. + * + * This function must not block. The transfer cancellation must complete + * later, resulting in a call to usbi_handle_transfer_cancellation() + * from the context of handle_events. + */ + int (*cancel_transfer)(struct usbi_transfer *itransfer); + + /* Clear a transfer as if it has completed or cancelled, but do not + * report any completion/cancellation to the library. You should free + * all private data from the transfer as if you were just about to report + * completion or cancellation. + * + * This function might seem a bit out of place. It is used when libusb + * detects a disconnected device - it calls this function for all pending + * transfers before reporting completion (with the disconnect code) to + * the user. Maybe we can improve upon this internal interface in future. + */ + void (*clear_transfer_priv)(struct usbi_transfer *itransfer); + + /* Handle any pending events. This involves monitoring any active + * transfers and processing their completion or cancellation. + * + * The function is passed an array of pollfd structures (size nfds) + * as a result of the poll() system call. The num_ready parameter + * indicates the number of file descriptors that have reported events + * (i.e. the poll() return value). This should be enough information + * for you to determine which actions need to be taken on the currently + * active transfers. + * + * For any cancelled transfers, call usbi_handle_transfer_cancellation(). + * For completed transfers, call usbi_handle_transfer_completion(). + * For control/bulk/interrupt transfers, populate the "transferred" + * element of the appropriate usbi_transfer structure before calling the + * above functions. For isochronous transfers, populate the status and + * transferred fields of the iso packet descriptors of the transfer. + * + * This function should also be able to detect disconnection of the + * device, reporting that situation with usbi_handle_disconnect(). + * + * When processing an event related to a transfer, you probably want to + * take usbi_transfer.lock to prevent races. See the documentation for + * the usbi_transfer structure. + * + * Return 0 on success, or a LIBUSB_ERROR code on failure. + */ + int (*handle_events)(struct libusb_context *ctx, + struct pollfd *fds, POLL_NFDS_TYPE nfds, int num_ready); + + /* Get time from specified clock. At least two clocks must be implemented + by the backend: USBI_CLOCK_REALTIME, and USBI_CLOCK_MONOTONIC. + + Description of clocks: + USBI_CLOCK_REALTIME : clock returns time since system epoch. + USBI_CLOCK_MONOTONIC: clock returns time since unspecified start + time (usually boot). + */ + int (*clock_gettime)(int clkid, struct timespec *tp); + +#ifdef USBI_TIMERFD_AVAILABLE + /* clock ID of the clock that should be used for timerfd */ + clockid_t (*get_timerfd_clockid)(void); +#endif + + /* Number of bytes to reserve for per-device private backend data. + * This private data area is accessible through the "os_priv" field of + * struct libusb_device. */ + size_t device_priv_size; + + /* Number of bytes to reserve for per-handle private backend data. + * This private data area is accessible through the "os_priv" field of + * struct libusb_device. */ + size_t device_handle_priv_size; + + /* Number of bytes to reserve for per-transfer private backend data. + * This private data area is accessible by calling + * usbi_transfer_get_os_priv() on the appropriate usbi_transfer instance. + */ + size_t transfer_priv_size; + + /* Mumber of additional bytes for os_priv for each iso packet. + * Can your backend use this? */ + /* FIXME: linux can't use this any more. if other OS's cannot either, + * then remove this */ + size_t add_iso_packet_size; +}; + +extern const struct usbi_os_backend * const usbi_backend; + +extern const struct usbi_os_backend linux_usbfs_backend; +extern const struct usbi_os_backend darwin_backend; +extern const struct usbi_os_backend openbsd_backend; +extern const struct usbi_os_backend windows_backend; + +#endif + diff --git a/libusb/os/darwin_usb.c b/libusb/os/darwin_usb.c new file mode 100644 index 0000000..8834d0f --- /dev/null +++ b/libusb/os/darwin_usb.c @@ -0,0 +1,1750 @@ +/* + * darwin backend for libusb 1.0 + * Copyright (C) 2008-2011 Nathan Hjelm <hjelmn@users.sourceforge.net> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <config.h> +#include <ctype.h> +#include <dirent.h> +#include <errno.h> +#include <fcntl.h> +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> +#include <libkern/OSAtomic.h> + +#include <mach/clock.h> +#include <mach/clock_types.h> +#include <mach/mach_host.h> +#include <mach/mach_port.h> + +#include <AvailabilityMacros.h> +#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 + #include <objc/objc-auto.h> +#endif + +#include <IOKit/IOCFBundle.h> +#include <IOKit/usb/IOUSBLib.h> +#include <IOKit/IOCFPlugIn.h> + +#include "darwin_usb.h" + +/* async event thread */ +static pthread_mutex_t libusb_darwin_at_mutex; +static pthread_cond_t libusb_darwin_at_cond; + +static clock_serv_t clock_realtime; +static clock_serv_t clock_monotonic; + +static CFRunLoopRef libusb_darwin_acfl = NULL; /* async cf loop */ +static volatile int32_t initCount = 0; + +/* async event thread */ +static pthread_t libusb_darwin_at; + +static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian); +static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface); +static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface); +static int darwin_reset_device(struct libusb_device_handle *dev_handle); +static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0); + +static const char *darwin_error_str (int result) { + switch (result) { + case kIOReturnSuccess: + return "no error"; + case kIOReturnNotOpen: + return "device not opened for exclusive access"; + case kIOReturnNoDevice: + return "no connection to an IOService"; + case kIOUSBNoAsyncPortErr: + return "no async port has been opened for interface"; + case kIOReturnExclusiveAccess: + return "another process has device opened for exclusive access"; + case kIOUSBPipeStalled: + return "pipe is stalled"; + case kIOReturnError: + return "could not establish a connection to the Darwin kernel"; + case kIOUSBTransactionTimeout: + return "transaction timed out"; + case kIOReturnBadArgument: + return "invalid argument"; + case kIOReturnAborted: + return "transaction aborted"; + case kIOReturnNotResponding: + return "device not responding"; + case kIOReturnOverrun: + return "data overrun"; + case kIOReturnCannotWire: + return "physical memory can not be wired down"; + default: + return "unknown error"; + } +} + +static int darwin_to_libusb (int result) { + switch (result) { + case kIOReturnUnderrun: + case kIOReturnSuccess: + return LIBUSB_SUCCESS; + case kIOReturnNotOpen: + case kIOReturnNoDevice: + return LIBUSB_ERROR_NO_DEVICE; + case kIOReturnExclusiveAccess: + return LIBUSB_ERROR_ACCESS; + case kIOUSBPipeStalled: + return LIBUSB_ERROR_PIPE; + case kIOReturnBadArgument: + return LIBUSB_ERROR_INVALID_PARAM; + case kIOUSBTransactionTimeout: + return LIBUSB_ERROR_TIMEOUT; + case kIOReturnNotResponding: + case kIOReturnAborted: + case kIOReturnError: + case kIOUSBNoAsyncPortErr: + default: + return LIBUSB_ERROR_OTHER; + } +} + + +static int ep_to_pipeRef(struct libusb_device_handle *dev_handle, uint8_t ep, uint8_t *pipep, uint8_t *ifcp) { + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; + + /* current interface */ + struct darwin_interface *cInterface; + + int8_t i, iface; + + usbi_info (HANDLE_CTX(dev_handle), "converting ep address 0x%02x to pipeRef and interface", ep); + + for (iface = 0 ; iface < USB_MAXINTERFACES ; iface++) { + cInterface = &priv->interfaces[iface]; + + if (dev_handle->claimed_interfaces & (1 << iface)) { + for (i = 0 ; i < cInterface->num_endpoints ; i++) { + if (cInterface->endpoint_addrs[i] == ep) { + *pipep = i + 1; + *ifcp = iface; + usbi_info (HANDLE_CTX(dev_handle), "pipe %d on interface %d matches", *pipep, *ifcp); + return 0; + } + } + } + } + + /* No pipe found with the correct endpoint address */ + usbi_warn (HANDLE_CTX(dev_handle), "no pipeRef found with endpoint address 0x%02x.", ep); + + return -1; +} + +static int usb_setup_device_iterator (io_iterator_t *deviceIterator, long location) { + CFMutableDictionaryRef matchingDict = IOServiceMatching(kIOUSBDeviceClassName); + + if (!matchingDict) + return kIOReturnError; + + if (location) { + CFMutableDictionaryRef propertyMatchDict = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, + &kCFTypeDictionaryKeyCallBacks, + &kCFTypeDictionaryValueCallBacks); + + if (propertyMatchDict) { + CFTypeRef locationCF = CFNumberCreate (NULL, kCFNumberLongType, &location); + + CFDictionarySetValue (propertyMatchDict, CFSTR(kUSBDevicePropertyLocationID), locationCF); + /* release our reference to the CFNumber (CFDictionarySetValue retains it) */ + CFRelease (locationCF); + + CFDictionarySetValue (matchingDict, CFSTR(kIOPropertyMatchKey), propertyMatchDict); + /* release out reference to the CFMutableDictionaryRef (CFDictionarySetValue retains it) */ + CFRelease (propertyMatchDict); + } + /* else we can still proceed as long as the caller accounts for the possibility of other devices in the iterator */ + } + + return IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, deviceIterator); +} + +static usb_device_t **usb_get_next_device (io_iterator_t deviceIterator, UInt32 *locationp) { + io_cf_plugin_ref_t *plugInInterface = NULL; + usb_device_t **device; + io_service_t usbDevice; + long result; + SInt32 score; + + if (!IOIteratorIsValid (deviceIterator)) + return NULL; + + + while ((usbDevice = IOIteratorNext(deviceIterator))) { + result = IOCreatePlugInInterfaceForService(usbDevice, kIOUSBDeviceUserClientTypeID, + kIOCFPlugInInterfaceID, &plugInInterface, + &score); + + /* we are done with the usb_device_t */ + (void)IOObjectRelease(usbDevice); + if (kIOReturnSuccess == result && plugInInterface) + break; + + usbi_dbg ("libusb/darwin.c usb_get_next_device: could not set up plugin for service: %s\n", darwin_error_str (result)); + } + + if (!usbDevice) + return NULL; + + (void)(*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(DeviceInterfaceID), + (LPVOID)&device); + + (*plugInInterface)->Stop(plugInInterface); + IODestroyPlugInInterface (plugInInterface); + + /* get the location from the device */ + if (locationp) + (*(device))->GetLocationID(device, locationp); + + return device; +} + +static kern_return_t darwin_get_device (uint32_t dev_location, usb_device_t ***darwin_device) { + kern_return_t kresult; + UInt32 location; + io_iterator_t deviceIterator; + + kresult = usb_setup_device_iterator (&deviceIterator, dev_location); + if (kresult) + return kresult; + + /* This port of libusb uses locations to keep track of devices. */ + while ((*darwin_device = usb_get_next_device (deviceIterator, &location)) != NULL) { + if (location == dev_location) + break; + + (**darwin_device)->Release(*darwin_device); + } + + IOObjectRelease (deviceIterator); + + if (!(*darwin_device)) + return kIOReturnNoDevice; + + return kIOReturnSuccess; +} + + + +static void darwin_devices_detached (void *ptr, io_iterator_t rem_devices) { + struct libusb_context *ctx = (struct libusb_context *)ptr; + struct libusb_device_handle *handle; + struct darwin_device_priv *dpriv; + struct darwin_device_handle_priv *priv; + + io_service_t device; + long location; + bool locationValid; + CFTypeRef locationCF; + UInt32 message; + + usbi_info (ctx, "a device has been detached"); + + while ((device = IOIteratorNext (rem_devices)) != 0) { + /* get the location from the i/o registry */ + locationCF = IORegistryEntryCreateCFProperty (device, CFSTR(kUSBDevicePropertyLocationID), kCFAllocatorDefault, 0); + + IOObjectRelease (device); + + if (!locationCF) + continue; + + locationValid = CFGetTypeID(locationCF) == CFNumberGetTypeID() && + CFNumberGetValue(locationCF, kCFNumberLongType, &location); + + CFRelease (locationCF); + + if (!locationValid) + continue; + + usbi_mutex_lock(&ctx->open_devs_lock); + list_for_each_entry(handle, &ctx->open_devs, list, struct libusb_device_handle) { + dpriv = (struct darwin_device_priv *)handle->dev->os_priv; + + /* the device may have been opened several times. write to each handle's event descriptor */ + if (dpriv->location == location && handle->os_priv) { + priv = (struct darwin_device_handle_priv *)handle->os_priv; + + message = MESSAGE_DEVICE_GONE; + write (priv->fds[1], &message, sizeof (message)); + } + } + + usbi_mutex_unlock(&ctx->open_devs_lock); + } +} + +static void darwin_clear_iterator (io_iterator_t iter) { + io_service_t device; + + while ((device = IOIteratorNext (iter)) != 0) + IOObjectRelease (device); +} + +static void *event_thread_main (void *arg0) { + IOReturn kresult; + struct libusb_context *ctx = (struct libusb_context *)arg0; + CFRunLoopRef runloop; + + /* Set this thread's name, so it can be seen in the debugger + and crash reports. */ +#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 + pthread_setname_np ("org.libusb.device-detach"); +#endif + + /* Tell the Objective-C garbage collector about this thread. + This is required because, unlike NSThreads, pthreads are + not automatically registered. Although we don't use + Objective-C, we use CoreFoundation, which does. */ +#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 + objc_registerThreadWithCollector(); +#endif + + /* hotplug (device removal) source */ + CFRunLoopSourceRef libusb_notification_cfsource; + io_notification_port_t libusb_notification_port; + io_iterator_t libusb_rem_device_iterator; + + usbi_info (ctx, "creating hotplug event source"); + + runloop = CFRunLoopGetCurrent (); + CFRetain (runloop); + + /* add the notification port to the run loop */ + libusb_notification_port = IONotificationPortCreate (kIOMasterPortDefault); + libusb_notification_cfsource = IONotificationPortGetRunLoopSource (libusb_notification_port); + CFRunLoopAddSource(runloop, libusb_notification_cfsource, kCFRunLoopDefaultMode); + + /* create notifications for removed devices */ + kresult = IOServiceAddMatchingNotification (libusb_notification_port, kIOTerminatedNotification, + IOServiceMatching(kIOUSBDeviceClassName), + (IOServiceMatchingCallback)darwin_devices_detached, + (void *)ctx, &libusb_rem_device_iterator); + + if (kresult != kIOReturnSuccess) { + usbi_err (ctx, "could not add hotplug event source: %s", darwin_error_str (kresult)); + + pthread_exit (NULL); + } + + /* arm notifiers */ + darwin_clear_iterator (libusb_rem_device_iterator); + + usbi_info (ctx, "thread ready to receive events"); + + /* signal the main thread that the async runloop has been created. */ + pthread_mutex_lock (&libusb_darwin_at_mutex); + libusb_darwin_acfl = runloop; + pthread_cond_signal (&libusb_darwin_at_cond); + pthread_mutex_unlock (&libusb_darwin_at_mutex); + + /* run the runloop */ + CFRunLoopRun(); + + usbi_info (ctx, "thread exiting"); + + /* delete notification port */ + IONotificationPortDestroy (libusb_notification_port); + IOObjectRelease (libusb_rem_device_iterator); + + CFRelease (runloop); + + libusb_darwin_acfl = NULL; + + pthread_exit (NULL); +} + +static int darwin_init(struct libusb_context *ctx) { + host_name_port_t host_self; + + if (OSAtomicIncrement32Barrier(&initCount) == 1) { + /* create the clocks that will be used */ + + host_self = mach_host_self(); + host_get_clock_service(host_self, CALENDAR_CLOCK, &clock_realtime); + host_get_clock_service(host_self, SYSTEM_CLOCK, &clock_monotonic); + mach_port_deallocate(mach_task_self(), host_self); + + pthread_mutex_init (&libusb_darwin_at_mutex, NULL); + pthread_cond_init (&libusb_darwin_at_cond, NULL); + + pthread_create (&libusb_darwin_at, NULL, event_thread_main, (void *)ctx); + + pthread_mutex_lock (&libusb_darwin_at_mutex); + while (!libusb_darwin_acfl) + pthread_cond_wait (&libusb_darwin_at_cond, &libusb_darwin_at_mutex); + pthread_mutex_unlock (&libusb_darwin_at_mutex); + } + + return 0; +} + +static void darwin_exit (void) { + if (OSAtomicDecrement32Barrier(&initCount) == 0) { + mach_port_deallocate(mach_task_self(), clock_realtime); + mach_port_deallocate(mach_task_self(), clock_monotonic); + + /* stop the async runloop and wait for the thread to terminate. */ + CFRunLoopStop (libusb_darwin_acfl); + pthread_join (libusb_darwin_at, NULL); + } +} + +static int darwin_get_device_descriptor(struct libusb_device *dev, unsigned char *buffer, int *host_endian) { + struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv; + + /* return cached copy */ + memmove (buffer, &(priv->dev_descriptor), DEVICE_DESC_LENGTH); + + *host_endian = 0; + + return 0; +} + +static int get_configuration_index (struct libusb_device *dev, int config_value) { + struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv; + UInt8 i, numConfig; + IOUSBConfigurationDescriptorPtr desc; + IOReturn kresult; + + /* is there a simpler way to determine the index? */ + kresult = (*(priv->device))->GetNumberOfConfigurations (priv->device, &numConfig); + if (kresult != kIOReturnSuccess) + return darwin_to_libusb (kresult); + + for (i = 0 ; i < numConfig ; i++) { + (*(priv->device))->GetConfigurationDescriptorPtr (priv->device, i, &desc); + + if (desc->bConfigurationValue == config_value) + return i; + } + + /* configuration not found */ + return LIBUSB_ERROR_OTHER; +} + +static int darwin_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian) { + struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv; + int config_index; + + if (0 == priv->active_config) + return LIBUSB_ERROR_INVALID_PARAM; + + config_index = get_configuration_index (dev, priv->active_config); + if (config_index < 0) + return config_index; + + return darwin_get_config_descriptor (dev, config_index, buffer, len, host_endian); +} + +static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian) { + struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv; + IOUSBConfigurationDescriptorPtr desc; + IOReturn kresult; + usb_device_t **device = NULL; + + if (!priv) + return LIBUSB_ERROR_OTHER; + + if (!priv->device) { + kresult = darwin_get_device (priv->location, &device); + if (kresult || !device) { + usbi_err (DEVICE_CTX (dev), "could not find device: %s", darwin_error_str (kresult)); + + return darwin_to_libusb (kresult); + } + + /* don't have to open the device to get a config descriptor */ + } else + device = priv->device; + + kresult = (*device)->GetConfigurationDescriptorPtr (device, config_index, &desc); + if (kresult == kIOReturnSuccess) { + /* copy descriptor */ + if (libusb_le16_to_cpu(desc->wTotalLength) < len) + len = libusb_le16_to_cpu(desc->wTotalLength); + + memmove (buffer, desc, len); + + /* GetConfigurationDescriptorPtr returns the descriptor in USB bus order */ + *host_endian = 0; + } + + if (!priv->device) + (*device)->Release (device); + + return darwin_to_libusb (kresult); +} + +/* check whether the os has configured the device */ +static int darwin_check_configuration (struct libusb_context *ctx, struct libusb_device *dev, usb_device_t **darwin_device) { + struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv; + + IOUSBConfigurationDescriptorPtr configDesc; + IOUSBFindInterfaceRequest request; + kern_return_t kresult; + io_iterator_t interface_iterator; + io_service_t firstInterface; + + if (priv->dev_descriptor.bNumConfigurations < 1) { + usbi_err (ctx, "device has no configurations"); + return LIBUSB_ERROR_OTHER; /* no configurations at this speed so we can't use it */ + } + + /* find the first configuration */ + kresult = (*darwin_device)->GetConfigurationDescriptorPtr (darwin_device, 0, &configDesc); + priv->first_config = (kIOReturnSuccess == kresult) ? configDesc->bConfigurationValue : 1; + + /* check if the device is already configured. there is probably a better way than iterating over the + to accomplish this (the trick is we need to avoid a call to GetConfigurations since buggy devices + might lock up on the device request) */ + + /* Setup the Interface Request */ + request.bInterfaceClass = kIOUSBFindInterfaceDontCare; + request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare; + request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare; + request.bAlternateSetting = kIOUSBFindInterfaceDontCare; + + kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator); + if (kresult) + return darwin_to_libusb (kresult); + + /* iterate once */ + firstInterface = IOIteratorNext(interface_iterator); + + /* done with the interface iterator */ + IOObjectRelease(interface_iterator); + + if (firstInterface) { + IOObjectRelease (firstInterface); + + /* device is configured */ + if (priv->dev_descriptor.bNumConfigurations == 1) + /* to avoid problems with some devices get the configurations value from the configuration descriptor */ + priv->active_config = priv->first_config; + else + /* devices with more than one configuration should work with GetConfiguration */ + (*darwin_device)->GetConfiguration (darwin_device, &priv->active_config); + } else + /* not configured */ + priv->active_config = 0; + + usbi_info (ctx, "active config: %u, first config: %u", priv->active_config, priv->first_config); + + return 0; +} + +static int darwin_cache_device_descriptor (struct libusb_context *ctx, struct libusb_device *dev, usb_device_t **device) { + struct darwin_device_priv *priv; + int retries = 5, delay = 30000; + int unsuspended = 0, try_unsuspend = 1, try_reconfigure = 1; + int is_open = 0; + int ret = 0, ret2; + IOUSBDevRequest req; + UInt8 bDeviceClass; + UInt16 idProduct, idVendor; + + (*device)->GetDeviceClass (device, &bDeviceClass); + (*device)->GetDeviceProduct (device, &idProduct); + (*device)->GetDeviceVendor (device, &idVendor); + + priv = (struct darwin_device_priv *)dev->os_priv; + + /* try to open the device (we can usually continue even if this fails) */ + is_open = ((*device)->USBDeviceOpenSeize(device) == kIOReturnSuccess); + + /**** retrieve device descriptor ****/ + do { + /* Set up request for device descriptor */ + memset (&(priv->dev_descriptor), 0, sizeof(IOUSBDeviceDescriptor)); + req.bmRequestType = USBmakebmRequestType(kUSBIn, kUSBStandard, kUSBDevice); + req.bRequest = kUSBRqGetDescriptor; + req.wValue = kUSBDeviceDesc << 8; + req.wIndex = 0; + req.wLength = sizeof(priv->dev_descriptor); + req.pData = &(priv->dev_descriptor); + + /* according to Apple's documentation the device must be open for DeviceRequest but we may not be able to open some + * devices and Apple's USB Prober doesn't bother to open the device before issuing a descriptor request. Still, + * to follow the spec as closely as possible, try opening the device */ + + ret = (*(device))->DeviceRequest (device, &req); + + if (kIOReturnOverrun == ret && kUSBDeviceDesc == priv->dev_descriptor.bDescriptorType) + /* received an overrun error but we still received a device descriptor */ + ret = kIOReturnSuccess; + + if (kIOReturnSuccess == ret && (0 == priv->dev_descriptor.bNumConfigurations || + 0 == priv->dev_descriptor.bcdUSB)) { + /* work around for incorrectly configured devices */ + if (try_reconfigure && is_open) { + usbi_dbg("descriptor appears to be invalid. resetting configuration before trying again..."); + + /* set the first configuration */ + (*device)->SetConfiguration(device, 1); + + /* don't try to reconfigure again */ + try_reconfigure = 0; + } + + ret = kIOUSBPipeStalled; + } + + if (kIOReturnSuccess != ret && is_open && try_unsuspend) { + /* device may be suspended. unsuspend it and try again */ +#if DeviceVersion >= 320 + UInt32 info; + + /* IOUSBFamily 320+ provides a way to detect device suspension but earlier versions do not */ + (void)(*device)->GetUSBDeviceInformation (device, &info); + + try_unsuspend = info & (1 << kUSBInformationDeviceIsSuspendedBit); +#endif + + if (try_unsuspend) { + /* resume the device */ + ret2 = (*device)->USBDeviceSuspend (device, 0); + if (kIOReturnSuccess != ret2) { + /* prevent log spew from poorly behaving devices. this indicates the + os actually had trouble communicating with the device */ + usbi_dbg("could not retrieve device descriptor. failed to unsuspend: %s",darwin_error_str(ret2)); + } else + unsuspended = 1; + + try_unsuspend = 0; + } + } + + if (kIOReturnSuccess != ret) { + usbi_dbg("kernel responded with code: 0x%08x. sleeping for %d ms before trying again", ret, delay/1000); + /* sleep for a little while before trying again */ + usleep (delay); + } + } while (kIOReturnSuccess != ret && retries--); + + if (unsuspended) + /* resuspend the device */ + (void)(*device)->USBDeviceSuspend (device, 1); + + if (is_open) + (void) (*device)->USBDeviceClose (device); + + if (ret != kIOReturnSuccess) { + /* a debug message was already printed out for this error */ + if (LIBUSB_CLASS_HUB == bDeviceClass) + usbi_dbg ("could not retrieve device descriptor %.4x:%.4x: %s. skipping device", idVendor, idProduct, darwin_error_str (ret)); + else + usbi_warn (ctx, "could not retrieve device descriptor %.4x:%.4x: %s. skipping device", idVendor, idProduct, darwin_error_str (ret)); + + return -1; + } + + usbi_dbg ("device descriptor:"); + usbi_dbg (" bDescriptorType: 0x%02x", priv->dev_descriptor.bDescriptorType); + usbi_dbg (" bcdUSB: 0x%04x", priv->dev_descriptor.bcdUSB); + usbi_dbg (" bDeviceClass: 0x%02x", priv->dev_descriptor.bDeviceClass); + usbi_dbg (" bDeviceSubClass: 0x%02x", priv->dev_descriptor.bDeviceSubClass); + usbi_dbg (" bDeviceProtocol: 0x%02x", priv->dev_descriptor.bDeviceProtocol); + usbi_dbg (" bMaxPacketSize0: 0x%02x", priv->dev_descriptor.bMaxPacketSize0); + usbi_dbg (" idVendor: 0x%04x", priv->dev_descriptor.idVendor); + usbi_dbg (" idProduct: 0x%04x", priv->dev_descriptor.idProduct); + usbi_dbg (" bcdDevice: 0x%04x", priv->dev_descriptor.bcdDevice); + usbi_dbg (" iManufacturer: 0x%02x", priv->dev_descriptor.iManufacturer); + usbi_dbg (" iProduct: 0x%02x", priv->dev_descriptor.iProduct); + usbi_dbg (" iSerialNumber: 0x%02x", priv->dev_descriptor.iSerialNumber); + usbi_dbg (" bNumConfigurations: 0x%02x", priv->dev_descriptor.bNumConfigurations); + + /* catch buggy hubs (which appear to be virtual). Apple's own USB prober has problems with these devices. */ + if (libusb_le16_to_cpu (priv->dev_descriptor.idProduct) != idProduct) { + /* not a valid device */ + usbi_warn (ctx, "idProduct from iokit (%04x) does not match idProduct in descriptor (%04x). skipping device", + idProduct, libusb_le16_to_cpu (priv->dev_descriptor.idProduct)); + return -1; + } + + return 0; +} + +static int process_new_device (struct libusb_context *ctx, usb_device_t **device, UInt32 locationID, struct discovered_devs **_discdevs) { + struct darwin_device_priv *priv; + struct libusb_device *dev; + struct discovered_devs *discdevs; + UInt16 address; + UInt8 devSpeed; + int ret = 0, need_unref = 0; + + do { + dev = usbi_get_device_by_session_id(ctx, locationID); + if (!dev) { + usbi_info (ctx, "allocating new device for location 0x%08x", locationID); + dev = usbi_alloc_device(ctx, locationID); + need_unref = 1; + } else + usbi_info (ctx, "using existing device for location 0x%08x", locationID); + + if (!dev) { + ret = LIBUSB_ERROR_NO_MEM; + break; + } + + priv = (struct darwin_device_priv *)dev->os_priv; + + (*device)->GetDeviceAddress (device, (USBDeviceAddress *)&address); + + ret = darwin_cache_device_descriptor (ctx, dev, device); + if (ret < 0) + break; + + /* check current active configuration (and cache the first configuration value-- which may be used by claim_interface) */ + ret = darwin_check_configuration (ctx, dev, device); + if (ret < 0) + break; + + dev->bus_number = locationID >> 24; + dev->device_address = address; + + (*device)->GetDeviceSpeed (device, &devSpeed); + + switch (devSpeed) { + case kUSBDeviceSpeedLow: dev->speed = LIBUSB_SPEED_LOW; break; + case kUSBDeviceSpeedFull: dev->speed = LIBUSB_SPEED_FULL; break; + case kUSBDeviceSpeedHigh: dev->speed = LIBUSB_SPEED_HIGH; break; + default: + usbi_warn (ctx, "Got unknown device speed %d", devSpeed); + } + + /* save our location, we'll need this later */ + priv->location = locationID; + snprintf(priv->sys_path, 20, "%03i-%04x-%04x-%02x-%02x", address, priv->dev_descriptor.idVendor, priv->dev_descriptor.idProduct, + priv->dev_descriptor.bDeviceClass, priv->dev_descriptor.bDeviceSubClass); + + ret = usbi_sanitize_device (dev); + if (ret < 0) + break; + + /* append the device to the list of discovered devices */ + discdevs = discovered_devs_append(*_discdevs, dev); + if (!discdevs) { + ret = LIBUSB_ERROR_NO_MEM; + break; + } + + *_discdevs = discdevs; + + usbi_info (ctx, "found device with address %d at %s", dev->device_address, priv->sys_path); + } while (0); + + if (need_unref) + libusb_unref_device(dev); + + return ret; +} + +static int darwin_get_device_list(struct libusb_context *ctx, struct discovered_devs **_discdevs) { + io_iterator_t deviceIterator; + usb_device_t **device; + kern_return_t kresult; + UInt32 location; + + kresult = usb_setup_device_iterator (&deviceIterator, 0); + if (kresult != kIOReturnSuccess) + return darwin_to_libusb (kresult); + + while ((device = usb_get_next_device (deviceIterator, &location)) != NULL) { + (void) process_new_device (ctx, device, location, _discdevs); + + (*(device))->Release(device); + } + + IOObjectRelease(deviceIterator); + + return 0; +} + +static int darwin_open (struct libusb_device_handle *dev_handle) { + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; + struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv; + usb_device_t **darwin_device; + IOReturn kresult; + + if (0 == dpriv->open_count) { + kresult = darwin_get_device (dpriv->location, &darwin_device); + if (kresult) { + usbi_err (HANDLE_CTX (dev_handle), "could not find device: %s", darwin_error_str (kresult)); + return darwin_to_libusb (kresult); + } + + dpriv->device = darwin_device; + + /* try to open the device */ + kresult = (*(dpriv->device))->USBDeviceOpenSeize (dpriv->device); + + if (kresult != kIOReturnSuccess) { + usbi_err (HANDLE_CTX (dev_handle), "USBDeviceOpen: %s", darwin_error_str(kresult)); + + switch (kresult) { + case kIOReturnExclusiveAccess: + /* it is possible to perform some actions on a device that is not open so do not return an error */ + priv->is_open = 0; + + break; + default: + (*(dpriv->device))->Release (dpriv->device); + dpriv->device = NULL; + return darwin_to_libusb (kresult); + } + } else { + /* create async event source */ + kresult = (*(dpriv->device))->CreateDeviceAsyncEventSource (dpriv->device, &priv->cfSource); + if (kresult != kIOReturnSuccess) { + usbi_err (HANDLE_CTX (dev_handle), "CreateDeviceAsyncEventSource: %s", darwin_error_str(kresult)); + + (*(dpriv->device))->USBDeviceClose (dpriv->device); + (*(dpriv->device))->Release (dpriv->device); + + dpriv->device = NULL; + return darwin_to_libusb (kresult); + } + + priv->is_open = 1; + + CFRetain (libusb_darwin_acfl); + + /* add the cfSource to the aync run loop */ + CFRunLoopAddSource(libusb_darwin_acfl, priv->cfSource, kCFRunLoopCommonModes); + } + } + + /* device opened successfully */ + dpriv->open_count++; + + /* create a file descriptor for notifications */ + pipe (priv->fds); + + /* set the pipe to be non-blocking */ + fcntl (priv->fds[1], F_SETFD, O_NONBLOCK); + + usbi_add_pollfd(HANDLE_CTX(dev_handle), priv->fds[0], POLLIN); + + usbi_info (HANDLE_CTX (dev_handle), "device open for access"); + + return 0; +} + +static void darwin_close (struct libusb_device_handle *dev_handle) { + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; + struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv; + IOReturn kresult; + int i; + + if (dpriv->open_count == 0) { + /* something is probably very wrong if this is the case */ + usbi_err (HANDLE_CTX (dev_handle), "Close called on a device that was not open!\n"); + return; + } + + dpriv->open_count--; + + /* make sure all interfaces are released */ + for (i = 0 ; i < USB_MAXINTERFACES ; i++) + if (dev_handle->claimed_interfaces & (1 << i)) + libusb_release_interface (dev_handle, i); + + if (0 == dpriv->open_count) { + if (priv->is_open) { + /* delete the device's async event source */ + if (priv->cfSource) { + CFRunLoopRemoveSource (libusb_darwin_acfl, priv->cfSource, kCFRunLoopDefaultMode); + CFRelease (priv->cfSource); + } + + /* close the device */ + kresult = (*(dpriv->device))->USBDeviceClose(dpriv->device); + if (kresult) { + /* Log the fact that we had a problem closing the file, however failing a + * close isn't really an error, so return success anyway */ + usbi_err (HANDLE_CTX (dev_handle), "USBDeviceClose: %s", darwin_error_str(kresult)); + } + } + + kresult = (*(dpriv->device))->Release(dpriv->device); + if (kresult) { + /* Log the fact that we had a problem closing the file, however failing a + * close isn't really an error, so return success anyway */ + usbi_err (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult)); + } + + dpriv->device = NULL; + } + + /* file descriptors are maintained per-instance */ + usbi_remove_pollfd (HANDLE_CTX (dev_handle), priv->fds[0]); + close (priv->fds[1]); + close (priv->fds[0]); + + priv->fds[0] = priv->fds[1] = -1; +} + +static int darwin_get_configuration(struct libusb_device_handle *dev_handle, int *config) { + struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv; + + *config = (int) dpriv->active_config; + + return 0; +} + +static int darwin_set_configuration(struct libusb_device_handle *dev_handle, int config) { + struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv; + IOReturn kresult; + int i; + + /* Setting configuration will invalidate the interface, so we need + to reclaim it. First, dispose of existing interfaces, if any. */ + for (i = 0 ; i < USB_MAXINTERFACES ; i++) + if (dev_handle->claimed_interfaces & (1 << i)) + darwin_release_interface (dev_handle, i); + + kresult = (*(dpriv->device))->SetConfiguration (dpriv->device, config); + if (kresult != kIOReturnSuccess) + return darwin_to_libusb (kresult); + + /* Reclaim any interfaces. */ + for (i = 0 ; i < USB_MAXINTERFACES ; i++) + if (dev_handle->claimed_interfaces & (1 << i)) + darwin_claim_interface (dev_handle, i); + + dpriv->active_config = config; + + return 0; +} + +static int darwin_get_interface (usb_device_t **darwin_device, uint8_t ifc, io_service_t *usbInterfacep) { + IOUSBFindInterfaceRequest request; + uint8_t current_interface; + kern_return_t kresult; + io_iterator_t interface_iterator; + + *usbInterfacep = IO_OBJECT_NULL; + + /* Setup the Interface Request */ + request.bInterfaceClass = kIOUSBFindInterfaceDontCare; + request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare; + request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare; + request.bAlternateSetting = kIOUSBFindInterfaceDontCare; + + kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator); + if (kresult) + return kresult; + + for ( current_interface = 0 ; current_interface <= ifc ; current_interface++ ) { + *usbInterfacep = IOIteratorNext(interface_iterator); + if (current_interface != ifc) + (void) IOObjectRelease (*usbInterfacep); + } + + /* done with the interface iterator */ + IOObjectRelease(interface_iterator); + + return 0; +} + +static int get_endpoints (struct libusb_device_handle *dev_handle, int iface) { + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; + + /* current interface */ + struct darwin_interface *cInterface = &priv->interfaces[iface]; + + kern_return_t kresult; + + u_int8_t numep, direction, number; + u_int8_t dont_care1, dont_care3; + u_int16_t dont_care2; + int i; + + usbi_info (HANDLE_CTX (dev_handle), "building table of endpoints."); + + /* retrieve the total number of endpoints on this interface */ + kresult = (*(cInterface->interface))->GetNumEndpoints(cInterface->interface, &numep); + if (kresult) { + usbi_err (HANDLE_CTX (dev_handle), "can't get number of endpoints for interface: %s", darwin_error_str(kresult)); + return darwin_to_libusb (kresult); + } + + /* iterate through pipe references */ + for (i = 1 ; i <= numep ; i++) { + kresult = (*(cInterface->interface))->GetPipeProperties(cInterface->interface, i, &direction, &number, &dont_care1, + &dont_care2, &dont_care3); + + if (kresult != kIOReturnSuccess) { + usbi_err (HANDLE_CTX (dev_handle), "error getting pipe information for pipe %d: %s", i, darwin_error_str(kresult)); + + return darwin_to_libusb (kresult); + } + + usbi_info (HANDLE_CTX (dev_handle), "interface: %i pipe %i: dir: %i number: %i", iface, i, direction, number); + + cInterface->endpoint_addrs[i - 1] = ((direction << 7 & LIBUSB_ENDPOINT_DIR_MASK) | (number & LIBUSB_ENDPOINT_ADDRESS_MASK)); + } + + cInterface->num_endpoints = numep; + + return 0; +} + +static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface) { + struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv; + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; + io_service_t usbInterface = IO_OBJECT_NULL; + IOReturn kresult; + IOCFPlugInInterface **plugInInterface = NULL; + SInt32 score; + + /* current interface */ + struct darwin_interface *cInterface = &priv->interfaces[iface]; + + kresult = darwin_get_interface (dpriv->device, iface, &usbInterface); + if (kresult != kIOReturnSuccess) + return darwin_to_libusb (kresult); + + /* make sure we have an interface */ + if (!usbInterface && dpriv->first_config != 0) { + usbi_info (HANDLE_CTX (dev_handle), "no interface found; setting configuration: %d", dpriv->first_config); + + /* set the configuration */ + kresult = darwin_set_configuration (dev_handle, dpriv->first_config); + if (kresult != LIBUSB_SUCCESS) { + usbi_err (HANDLE_CTX (dev_handle), "could not set configuration"); + return kresult; + } + + kresult = darwin_get_interface (dpriv->device, iface, &usbInterface); + if (kresult) { + usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult)); + return darwin_to_libusb (kresult); + } + } + + if (!usbInterface) { + usbi_err (HANDLE_CTX (dev_handle), "interface not found"); + return LIBUSB_ERROR_NOT_FOUND; + } + + /* get an interface to the device's interface */ + kresult = IOCreatePlugInInterfaceForService (usbInterface, kIOUSBInterfaceUserClientTypeID, + kIOCFPlugInInterfaceID, &plugInInterface, &score); + + /* ignore release error */ + (void)IOObjectRelease (usbInterface); + + if (kresult) { + usbi_err (HANDLE_CTX (dev_handle), "IOCreatePlugInInterfaceForService: %s", darwin_error_str(kresult)); + return darwin_to_libusb (kresult); + } + + if (!plugInInterface) { + usbi_err (HANDLE_CTX (dev_handle), "plugin interface not found"); + return LIBUSB_ERROR_NOT_FOUND; + } + + /* Do the actual claim */ + kresult = (*plugInInterface)->QueryInterface(plugInInterface, + CFUUIDGetUUIDBytes(kIOUSBInterfaceInterfaceID), + (LPVOID)&cInterface->interface); + /* We no longer need the intermediate plug-in */ + IODestroyPlugInInterface (plugInInterface); + if (kresult || !cInterface->interface) { + usbi_err (HANDLE_CTX (dev_handle), "QueryInterface: %s", darwin_error_str(kresult)); + return darwin_to_libusb (kresult); + } + + /* claim the interface */ + kresult = (*(cInterface->interface))->USBInterfaceOpen(cInterface->interface); + if (kresult) { + usbi_err (HANDLE_CTX (dev_handle), "USBInterfaceOpen: %s", darwin_error_str(kresult)); + return darwin_to_libusb (kresult); + } + + /* update list of endpoints */ + kresult = get_endpoints (dev_handle, iface); + if (kresult) { + /* this should not happen */ + darwin_release_interface (dev_handle, iface); + usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table"); + return kresult; + } + + cInterface->cfSource = NULL; + + /* create async event source */ + kresult = (*(cInterface->interface))->CreateInterfaceAsyncEventSource (cInterface->interface, &cInterface->cfSource); + if (kresult != kIOReturnSuccess) { + usbi_err (HANDLE_CTX (dev_handle), "could not create async event source"); + + /* can't continue without an async event source */ + (void)darwin_release_interface (dev_handle, iface); + + return darwin_to_libusb (kresult); + } + + /* add the cfSource to the async thread's run loop */ + CFRunLoopAddSource(libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode); + + usbi_info (HANDLE_CTX (dev_handle), "interface opened"); + + return 0; +} + +static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface) { + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; + IOReturn kresult; + + /* current interface */ + struct darwin_interface *cInterface = &priv->interfaces[iface]; + + /* Check to see if an interface is open */ + if (!cInterface->interface) + return LIBUSB_SUCCESS; + + /* clean up endpoint data */ + cInterface->num_endpoints = 0; + + /* delete the interface's async event source */ + if (cInterface->cfSource) { + CFRunLoopRemoveSource (libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode); + CFRelease (cInterface->cfSource); + } + + kresult = (*(cInterface->interface))->USBInterfaceClose(cInterface->interface); + if (kresult) + usbi_err (HANDLE_CTX (dev_handle), "USBInterfaceClose: %s", darwin_error_str(kresult)); + + kresult = (*(cInterface->interface))->Release(cInterface->interface); + if (kresult != kIOReturnSuccess) + usbi_err (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult)); + + cInterface->interface = IO_OBJECT_NULL; + + return darwin_to_libusb (kresult); +} + +static int darwin_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) { + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; + IOReturn kresult; + + /* current interface */ + struct darwin_interface *cInterface = &priv->interfaces[iface]; + + if (!cInterface->interface) + return LIBUSB_ERROR_NO_DEVICE; + + kresult = (*(cInterface->interface))->SetAlternateInterface (cInterface->interface, altsetting); + if (kresult != kIOReturnSuccess) + darwin_reset_device (dev_handle); + + /* update list of endpoints */ + kresult = get_endpoints (dev_handle, iface); + if (kresult) { + /* this should not happen */ + darwin_release_interface (dev_handle, iface); + usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table"); + return kresult; + } + + return darwin_to_libusb (kresult); +} + +static int darwin_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) { + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; + + /* current interface */ + struct darwin_interface *cInterface; + uint8_t pipeRef, iface; + IOReturn kresult; + + /* determine the interface/endpoint to use */ + if (ep_to_pipeRef (dev_handle, endpoint, &pipeRef, &iface) != 0) { + usbi_err (HANDLE_CTX (dev_handle), "endpoint not found on any open interface"); + + return LIBUSB_ERROR_NOT_FOUND; + } + + cInterface = &priv->interfaces[iface]; + +#if (InterfaceVersion < 190) + kresult = (*(cInterface->interface))->ClearPipeStall(cInterface->interface, pipeRef); +#else + /* newer versions of darwin support clearing additional bits on the device's endpoint */ + kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef); +#endif + if (kresult) + usbi_err (HANDLE_CTX (dev_handle), "ClearPipeStall: %s", darwin_error_str (kresult)); + + return darwin_to_libusb (kresult); +} + +static int darwin_reset_device(struct libusb_device_handle *dev_handle) { + struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv; + IOReturn kresult; + + kresult = (*(dpriv->device))->ResetDevice (dpriv->device); + if (kresult) + usbi_err (HANDLE_CTX (dev_handle), "ResetDevice: %s", darwin_error_str (kresult)); + + return darwin_to_libusb (kresult); +} + +static int darwin_kernel_driver_active(struct libusb_device_handle *dev_handle, int interface) { + struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv; + io_service_t usbInterface; + CFTypeRef driver; + IOReturn kresult; + + kresult = darwin_get_interface (dpriv->device, interface, &usbInterface); + if (kresult) { + usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult)); + + return darwin_to_libusb (kresult); + } + + driver = IORegistryEntryCreateCFProperty (usbInterface, kIOBundleIdentifierKey, kCFAllocatorDefault, 0); + IOObjectRelease (usbInterface); + + if (driver) { + CFRelease (driver); + + return 1; + } + + /* no driver */ + return 0; +} + +/* attaching/detaching kernel drivers is not currently supported (maybe in the future?) */ +static int darwin_attach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) { + (void)dev_handle; + (void)interface; + return LIBUSB_ERROR_NOT_SUPPORTED; +} + +static int darwin_detach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) { + (void)dev_handle; + (void)interface; + return LIBUSB_ERROR_NOT_SUPPORTED; +} + +static void darwin_destroy_device(struct libusb_device *dev) { + (void)dev; +} + +static int submit_bulk_transfer(struct usbi_transfer *itransfer) { + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv; + + IOReturn ret; + uint8_t transferType; + /* None of the values below are used in libusb for bulk transfers */ + uint8_t direction, number, interval, pipeRef, iface; + uint16_t maxPacketSize; + + struct darwin_interface *cInterface; + + if (IS_XFEROUT(transfer) && transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) + return LIBUSB_ERROR_NOT_SUPPORTED; + + if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) { + usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); + + return LIBUSB_ERROR_NOT_FOUND; + } + + cInterface = &priv->interfaces[iface]; + + (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number, + &transferType, &maxPacketSize, &interval); + + /* submit the request */ + /* timeouts are unavailable on interrupt endpoints */ + if (transferType == kUSBInterrupt) { + if (IS_XFERIN(transfer)) + ret = (*(cInterface->interface))->ReadPipeAsync(cInterface->interface, pipeRef, transfer->buffer, + transfer->length, darwin_async_io_callback, itransfer); + else + ret = (*(cInterface->interface))->WritePipeAsync(cInterface->interface, pipeRef, transfer->buffer, + transfer->length, darwin_async_io_callback, itransfer); + } else { + itransfer->flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT; + + if (IS_XFERIN(transfer)) + ret = (*(cInterface->interface))->ReadPipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer, + transfer->length, transfer->timeout, transfer->timeout, + darwin_async_io_callback, (void *)itransfer); + else + ret = (*(cInterface->interface))->WritePipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer, + transfer->length, transfer->timeout, transfer->timeout, + darwin_async_io_callback, (void *)itransfer); + } + + if (ret) + usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out", + darwin_error_str(ret), ret); + + return darwin_to_libusb (ret); +} + +static int submit_iso_transfer(struct usbi_transfer *itransfer) { + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv; + + IOReturn kresult; + uint8_t pipeRef, iface; + UInt64 frame; + AbsoluteTime atTime; + int i; + + struct darwin_interface *cInterface; + + /* construct an array of IOUSBIsocFrames, reuse the old one if possible */ + if (tpriv->isoc_framelist && tpriv->num_iso_packets != transfer->num_iso_packets) { + free(tpriv->isoc_framelist); + tpriv->isoc_framelist = NULL; + } + + if (!tpriv->isoc_framelist) { + tpriv->num_iso_packets = transfer->num_iso_packets; + tpriv->isoc_framelist = (IOUSBIsocFrame*) calloc (transfer->num_iso_packets, sizeof(IOUSBIsocFrame)); + if (!tpriv->isoc_framelist) + return LIBUSB_ERROR_NO_MEM; + } + + /* copy the frame list from the libusb descriptor (the structures differ only is member order) */ + for (i = 0 ; i < transfer->num_iso_packets ; i++) + tpriv->isoc_framelist[i].frReqCount = transfer->iso_packet_desc[i].length; + + /* determine the interface/endpoint to use */ + if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) { + usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); + + return LIBUSB_ERROR_NOT_FOUND; + } + + cInterface = &priv->interfaces[iface]; + + /* Last but not least we need the bus frame number */ + kresult = (*(cInterface->interface))->GetBusFrameNumber(cInterface->interface, &frame, &atTime); + if (kresult) { + usbi_err (TRANSFER_CTX (transfer), "failed to get bus frame number: %d", kresult); + free(tpriv->isoc_framelist); + tpriv->isoc_framelist = NULL; + + return darwin_to_libusb (kresult); + } + + /* schedule for a frame a little in the future */ + frame += 4; + + if (cInterface->frames[transfer->endpoint] && frame < cInterface->frames[transfer->endpoint]) + frame = cInterface->frames[transfer->endpoint]; + + /* submit the request */ + if (IS_XFERIN(transfer)) + kresult = (*(cInterface->interface))->ReadIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame, + transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback, + itransfer); + else + kresult = (*(cInterface->interface))->WriteIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame, + transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback, + itransfer); + + cInterface->frames[transfer->endpoint] = frame + transfer->num_iso_packets / 8; + + if (kresult != kIOReturnSuccess) { + usbi_err (TRANSFER_CTX (transfer), "isochronous transfer failed (dir: %s): %s", IS_XFERIN(transfer) ? "In" : "Out", + darwin_error_str(kresult)); + free (tpriv->isoc_framelist); + tpriv->isoc_framelist = NULL; + } + + return darwin_to_libusb (kresult); +} + +static int submit_control_transfer(struct usbi_transfer *itransfer) { + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct libusb_control_setup *setup = (struct libusb_control_setup *) transfer->buffer; + struct darwin_device_priv *dpriv = (struct darwin_device_priv *)transfer->dev_handle->dev->os_priv; + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv; + struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); + + IOReturn kresult; + + bzero(&tpriv->req, sizeof(tpriv->req)); + + /* IOUSBDeviceInterface expects the request in cpu endianess */ + tpriv->req.bmRequestType = setup->bmRequestType; + tpriv->req.bRequest = setup->bRequest; + /* these values should be in bus order from libusb_fill_control_setup */ + tpriv->req.wValue = OSSwapLittleToHostInt16 (setup->wValue); + tpriv->req.wIndex = OSSwapLittleToHostInt16 (setup->wIndex); + tpriv->req.wLength = OSSwapLittleToHostInt16 (setup->wLength); + /* data is stored after the libusb control block */ + tpriv->req.pData = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE; + tpriv->req.completionTimeout = transfer->timeout; + tpriv->req.noDataTimeout = transfer->timeout; + + itransfer->flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT; + + /* all transfers in libusb-1.0 are async */ + + if (transfer->endpoint) { + struct darwin_interface *cInterface; + uint8_t pipeRef, iface; + + if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) { + usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); + + return LIBUSB_ERROR_NOT_FOUND; + } + + cInterface = &priv->interfaces[iface]; + + kresult = (*(cInterface->interface))->ControlRequestAsyncTO (cInterface->interface, pipeRef, &(tpriv->req), darwin_async_io_callback, itransfer); + } else + /* control request on endpoint 0 */ + kresult = (*(dpriv->device))->DeviceRequestAsyncTO(dpriv->device, &(tpriv->req), darwin_async_io_callback, itransfer); + + if (kresult != kIOReturnSuccess) + usbi_err (TRANSFER_CTX (transfer), "control request failed: %s", darwin_error_str(kresult)); + + return darwin_to_libusb (kresult); +} + +static int darwin_submit_transfer(struct usbi_transfer *itransfer) { + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + + switch (transfer->type) { + case LIBUSB_TRANSFER_TYPE_CONTROL: + return submit_control_transfer(itransfer); + case LIBUSB_TRANSFER_TYPE_BULK: + case LIBUSB_TRANSFER_TYPE_INTERRUPT: + return submit_bulk_transfer(itransfer); + case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: + return submit_iso_transfer(itransfer); + default: + usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); + return LIBUSB_ERROR_INVALID_PARAM; + } +} + +static int cancel_control_transfer(struct usbi_transfer *itransfer) { + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct darwin_device_priv *dpriv = (struct darwin_device_priv *)transfer->dev_handle->dev->os_priv; + IOReturn kresult; + + usbi_info (ITRANSFER_CTX (itransfer), "WARNING: aborting all transactions control pipe"); + + if (!dpriv->device) + return LIBUSB_ERROR_NO_DEVICE; + + kresult = (*(dpriv->device))->USBDeviceAbortPipeZero (dpriv->device); + + return darwin_to_libusb (kresult); +} + +static int darwin_abort_transfers (struct usbi_transfer *itransfer) { + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct darwin_device_priv *dpriv = (struct darwin_device_priv *)transfer->dev_handle->dev->os_priv; + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv; + struct darwin_interface *cInterface; + uint8_t pipeRef, iface; + IOReturn kresult; + + if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) { + usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); + + return LIBUSB_ERROR_NOT_FOUND; + } + + cInterface = &priv->interfaces[iface]; + + if (!dpriv->device) + return LIBUSB_ERROR_NO_DEVICE; + + usbi_info (ITRANSFER_CTX (itransfer), "WARNING: aborting all transactions on interface %d pipe %d", iface, pipeRef); + + /* abort transactions */ + (*(cInterface->interface))->AbortPipe (cInterface->interface, pipeRef); + + usbi_info (ITRANSFER_CTX (itransfer), "calling clear pipe stall to clear the data toggle bit"); + + /* clear the data toggle bit */ +#if (InterfaceVersion < 190) + kresult = (*(cInterface->interface))->ClearPipeStall(cInterface->interface, pipeRef); +#else + /* newer versions of darwin support clearing additional bits on the device's endpoint */ + kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef); +#endif + + return darwin_to_libusb (kresult); +} + +static int darwin_cancel_transfer(struct usbi_transfer *itransfer) { + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + + switch (transfer->type) { + case LIBUSB_TRANSFER_TYPE_CONTROL: + return cancel_control_transfer(itransfer); + case LIBUSB_TRANSFER_TYPE_BULK: + case LIBUSB_TRANSFER_TYPE_INTERRUPT: + case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: + return darwin_abort_transfers (itransfer); + default: + usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); + return LIBUSB_ERROR_INVALID_PARAM; + } +} + +static void darwin_clear_transfer_priv (struct usbi_transfer *itransfer) { + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); + + if (transfer->type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS && tpriv->isoc_framelist) { + free (tpriv->isoc_framelist); + tpriv->isoc_framelist = NULL; + } +} + +static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0) { + struct usbi_transfer *itransfer = (struct usbi_transfer *)refcon; + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv; + UInt32 message, size; + + usbi_info (ITRANSFER_CTX (itransfer), "an async io operation has completed"); + + size = (UInt32) (uintptr_t) arg0; + + /* send a completion message to the device's file descriptor */ + message = MESSAGE_ASYNC_IO_COMPLETE; + write (priv->fds[1], &message, sizeof (message)); + write (priv->fds[1], &itransfer, sizeof (itransfer)); + write (priv->fds[1], &result, sizeof (IOReturn)); + write (priv->fds[1], &size, sizeof (size)); +} + +static int darwin_transfer_status (struct usbi_transfer *itransfer, kern_return_t result) { + if (itransfer->flags & USBI_TRANSFER_TIMED_OUT) + result = kIOUSBTransactionTimeout; + + switch (result) { + case kIOReturnUnderrun: + case kIOReturnSuccess: + return LIBUSB_TRANSFER_COMPLETED; + case kIOReturnAborted: + return LIBUSB_TRANSFER_CANCELLED; + case kIOUSBPipeStalled: + usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: pipe is stalled"); + return LIBUSB_TRANSFER_STALL; + case kIOReturnOverrun: + usbi_err (ITRANSFER_CTX (itransfer), "transfer error: data overrun"); + return LIBUSB_TRANSFER_OVERFLOW; + case kIOUSBTransactionTimeout: + usbi_err (ITRANSFER_CTX (itransfer), "transfer error: timed out"); + itransfer->flags |= USBI_TRANSFER_TIMED_OUT; + return LIBUSB_TRANSFER_TIMED_OUT; + default: + usbi_err (ITRANSFER_CTX (itransfer), "transfer error: %s (value = 0x%08x)", darwin_error_str (result), result); + return LIBUSB_TRANSFER_ERROR; + } +} + +static void darwin_handle_callback (struct usbi_transfer *itransfer, kern_return_t result, UInt32 io_size) { + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); + int isIsoc = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS == transfer->type; + int isBulk = LIBUSB_TRANSFER_TYPE_BULK == transfer->type; + int isControl = LIBUSB_TRANSFER_TYPE_CONTROL == transfer->type; + int isInterrupt = LIBUSB_TRANSFER_TYPE_INTERRUPT == transfer->type; + int i; + + if (!isIsoc && !isBulk && !isControl && !isInterrupt) { + usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); + return; + } + + usbi_info (ITRANSFER_CTX (itransfer), "handling %s completion with kernel status %d", + isControl ? "control" : isBulk ? "bulk" : isIsoc ? "isoc" : "interrupt", result); + + if (kIOReturnSuccess == result || kIOReturnUnderrun == result) { + if (isIsoc && tpriv->isoc_framelist) { + /* copy isochronous results back */ + + for (i = 0; i < transfer->num_iso_packets ; i++) { + struct libusb_iso_packet_descriptor *lib_desc = &transfer->iso_packet_desc[i]; + lib_desc->status = darwin_to_libusb (tpriv->isoc_framelist[i].frStatus); + lib_desc->actual_length = tpriv->isoc_framelist[i].frActCount; + } + } else if (!isIsoc) + itransfer->transferred += io_size; + } + + /* it is ok to handle cancelled transfers without calling usbi_handle_transfer_cancellation (we catch timeout transfers) */ + usbi_handle_transfer_completion (itransfer, darwin_transfer_status (itransfer, result)); +} + +static int op_handle_events(struct libusb_context *ctx, struct pollfd *fds, POLL_NFDS_TYPE nfds, int num_ready) { + struct usbi_transfer *itransfer; + UInt32 io_size; + IOReturn kresult; + POLL_NFDS_TYPE i = 0; + ssize_t ret; + UInt32 message; + + usbi_mutex_lock(&ctx->open_devs_lock); + for (i = 0; i < nfds && num_ready > 0; i++) { + struct pollfd *pollfd = &fds[i]; + struct libusb_device_handle *handle; + struct darwin_device_handle_priv *hpriv = NULL; + + usbi_info (ctx, "checking fd %i with revents = %x", fds[i], pollfd->revents); + + if (!pollfd->revents) + continue; + + num_ready--; + list_for_each_entry(handle, &ctx->open_devs, list, struct libusb_device_handle) { + hpriv = (struct darwin_device_handle_priv *)handle->os_priv; + if (hpriv->fds[0] == pollfd->fd) + break; + } + + if (!(pollfd->revents & POLLERR)) { + ret = read (hpriv->fds[0], &message, sizeof (message)); + if (ret < (ssize_t)sizeof (message)) + continue; + } else + /* could not poll the device-- response is to delete the device (this seems a little heavy-handed) */ + message = MESSAGE_DEVICE_GONE; + + switch (message) { + case MESSAGE_DEVICE_GONE: + /* remove the device's async port from the runloop */ + if (hpriv->cfSource) { + if (libusb_darwin_acfl) + CFRunLoopRemoveSource (libusb_darwin_acfl, hpriv->cfSource, kCFRunLoopDefaultMode); + CFRelease (hpriv->cfSource); + hpriv->cfSource = NULL; + } + + usbi_remove_pollfd(HANDLE_CTX(handle), hpriv->fds[0]); + usbi_handle_disconnect(handle); + + /* done with this device */ + continue; + case MESSAGE_ASYNC_IO_COMPLETE: + read (hpriv->fds[0], &itransfer, sizeof (itransfer)); + read (hpriv->fds[0], &kresult, sizeof (IOReturn)); + read (hpriv->fds[0], &io_size, sizeof (UInt32)); + + darwin_handle_callback (itransfer, kresult, io_size); + break; + default: + usbi_err (ctx, "unknown message received from device pipe"); + } + } + + usbi_mutex_unlock(&ctx->open_devs_lock); + + return 0; +} + +static int darwin_clock_gettime(int clk_id, struct timespec *tp) { + mach_timespec_t sys_time; + clock_serv_t clock_ref; + + switch (clk_id) { + case USBI_CLOCK_REALTIME: + /* CLOCK_REALTIME represents time since the epoch */ + clock_ref = clock_realtime; + break; + case USBI_CLOCK_MONOTONIC: + /* use system boot time as reference for the monotonic clock */ + clock_ref = clock_monotonic; + break; + default: + return LIBUSB_ERROR_INVALID_PARAM; + } + + clock_get_time (clock_ref, &sys_time); + + tp->tv_sec = sys_time.tv_sec; + tp->tv_nsec = sys_time.tv_nsec; + + return 0; +} + +const struct usbi_os_backend darwin_backend = { + .name = "Darwin", + .init = darwin_init, + .exit = darwin_exit, + .get_device_list = darwin_get_device_list, + .get_device_descriptor = darwin_get_device_descriptor, + .get_active_config_descriptor = darwin_get_active_config_descriptor, + .get_config_descriptor = darwin_get_config_descriptor, + + .open = darwin_open, + .close = darwin_close, + .get_configuration = darwin_get_configuration, + .set_configuration = darwin_set_configuration, + .claim_interface = darwin_claim_interface, + .release_interface = darwin_release_interface, + + .set_interface_altsetting = darwin_set_interface_altsetting, + .clear_halt = darwin_clear_halt, + .reset_device = darwin_reset_device, + + .kernel_driver_active = darwin_kernel_driver_active, + .detach_kernel_driver = darwin_detach_kernel_driver, + .attach_kernel_driver = darwin_attach_kernel_driver, + + .destroy_device = darwin_destroy_device, + + .submit_transfer = darwin_submit_transfer, + .cancel_transfer = darwin_cancel_transfer, + .clear_transfer_priv = darwin_clear_transfer_priv, + + .handle_events = op_handle_events, + + .clock_gettime = darwin_clock_gettime, + + .device_priv_size = sizeof(struct darwin_device_priv), + .device_handle_priv_size = sizeof(struct darwin_device_handle_priv), + .transfer_priv_size = sizeof(struct darwin_transfer_priv), + .add_iso_packet_size = 0, +}; + diff --git a/libusb/os/darwin_usb.h b/libusb/os/darwin_usb.h new file mode 100644 index 0000000..59d0a69 --- /dev/null +++ b/libusb/os/darwin_usb.h @@ -0,0 +1,169 @@ +/* + * darwin backend for libusb 1.0 + * Copyright (C) 2008-2009 Nathan Hjelm <hjelmn@users.sourceforge.net> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#if !defined(LIBUSB_DARWIN_H) +#define LIBUSB_DARWIN_H + +#include "libusbi.h" + +#include <IOKit/IOTypes.h> +#include <IOKit/IOCFBundle.h> +#include <IOKit/usb/IOUSBLib.h> +#include <IOKit/IOCFPlugIn.h> + +/* IOUSBInterfaceInferface */ +#if defined (kIOUSBInterfaceInterfaceID300) + +#define usb_interface_t IOUSBInterfaceInterface300 +#define InterfaceInterfaceID kIOUSBInterfaceInterfaceID300 +#define InterfaceVersion 300 + +#elif defined (kIOUSBInterfaceInterfaceID245) + +#define usb_interface_t IOUSBInterfaceInterface245 +#define InterfaceInterfaceID kIOUSBInterfaceInterfaceID245 +#define InterfaceVersion 245 + +#elif defined (kIOUSBInterfaceInterfaceID220) + +#define usb_interface_t IOUSBInterfaceInterface220 +#define InterfaceInterfaceID kIOUSBInterfaceInterfaceID220 +#define InterfaceVersion 220 + +#elif defined (kIOUSBInterfaceInterfaceID197) + +#define usb_interface_t IOUSBInterfaceInterface197 +#define InterfaceInterfaceID kIOUSBInterfaceInterfaceID197 +#define InterfaceVersion 197 + +#elif defined (kIOUSBInterfaceInterfaceID190) + +#define usb_interface_t IOUSBInterfaceInterface190 +#define InterfaceInterfaceID kIOUSBInterfaceInterfaceID190 +#define InterfaceVersion 190 + +#elif defined (kIOUSBInterfaceInterfaceID182) + +#define usb_interface_t IOUSBInterfaceInterface182 +#define InterfaceInterfaceID kIOUSBInterfaceInterfaceID182 +#define InterfaceVersion 182 + +#else + +#error "IOUSBFamily is too old. Please upgrade your OS" + +#endif + +/* IOUSBDeviceInterface */ +#if defined (kIOUSBDeviceInterfaceID320) + +#define usb_device_t IOUSBDeviceInterface320 +#define DeviceInterfaceID kIOUSBDeviceInterfaceID320 +#define DeviceVersion 320 + +#elif defined (kIOUSBDeviceInterfaceID300) + +#define usb_device_t IOUSBDeviceInterface300 +#define DeviceInterfaceID kIOUSBDeviceInterfaceID300 +#define DeviceVersion 300 + +#elif defined (kIOUSBDeviceInterfaceID245) + +#define usb_device_t IOUSBDeviceInterface245 +#define DeviceInterfaceID kIOUSBDeviceInterfaceID245 +#define DeviceVersion 245 + +#elif defined (kIOUSBDeviceInterfaceID197) + +#define usb_device_t IOUSBDeviceInterface197 +#define DeviceInterfaceID kIOUSBDeviceInterfaceID197 +#define DeviceVersion 197 + +#elif defined (kIOUSBDeviceInterfaceID187) + +#define usb_device_t IOUSBDeviceInterface187 +#define DeviceInterfaceID kIOUSBDeviceInterfaceID187 +#define DeviceVersion 187 + +#elif defined (kIOUSBDeviceInterfaceID182) + +#define usb_device_t IOUSBDeviceInterface182 +#define DeviceInterfaceID kIOUSBDeviceInterfaceID182 +#define DeviceVersion 182 + +#else + +#error "IOUSBFamily is too old. Please upgrade your OS" + +#endif + +#if !defined(IO_OBJECT_NULL) +#define IO_OBJECT_NULL ((io_object_t) 0) +#endif + +typedef IOCFPlugInInterface *io_cf_plugin_ref_t; +typedef IONotificationPortRef io_notification_port_t; + +/* private structures */ +struct darwin_device_priv { + IOUSBDeviceDescriptor dev_descriptor; + UInt32 location; + char sys_path[21]; + usb_device_t **device; + int open_count; + UInt8 first_config, active_config; +}; + +struct darwin_device_handle_priv { + int is_open; + CFRunLoopSourceRef cfSource; + int fds[2]; + + struct darwin_interface { + usb_interface_t **interface; + uint8_t num_endpoints; + CFRunLoopSourceRef cfSource; + uint64_t frames[256]; + uint8_t endpoint_addrs[USB_MAXENDPOINTS]; + } interfaces[USB_MAXINTERFACES]; +}; + +struct darwin_transfer_priv { + /* Isoc */ + IOUSBIsocFrame *isoc_framelist; + size_t num_iso_packets; + + /* Control */ +#if !defined (LIBUSB_NO_TIMEOUT_DEVICE) + IOUSBDevRequestTO req; +#else + IOUSBDevRequest req; +#endif + + /* Bulk */ +}; + +enum { + MESSAGE_DEVICE_GONE, + MESSAGE_ASYNC_IO_COMPLETE +}; + + + +#endif diff --git a/libusb/os/linux_usbfs.c b/libusb/os/linux_usbfs.c new file mode 100644 index 0000000..02d182d --- /dev/null +++ b/libusb/os/linux_usbfs.c @@ -0,0 +1,2438 @@ +/* + * Linux usbfs backend for libusb + * Copyright (C) 2007-2009 Daniel Drake <dsd@gentoo.org> + * Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <config.h> +#include <ctype.h> +#include <dirent.h> +#include <errno.h> +#include <fcntl.h> +#include <poll.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/utsname.h> +#include <unistd.h> + +#include "libusb.h" +#include "libusbi.h" +#include "linux_usbfs.h" + +/* sysfs vs usbfs: + * opening a usbfs node causes the device to be resumed, so we attempt to + * avoid this during enumeration. + * + * sysfs allows us to read the kernel's in-memory copies of device descriptors + * and so forth, avoiding the need to open the device: + * - The binary "descriptors" file was added in 2.6.23. + * - The "busnum" file was added in 2.6.22 + * - The "devnum" file has been present since pre-2.6.18 + * - the "bConfigurationValue" file has been present since pre-2.6.18 + * + * If we have bConfigurationValue, busnum, and devnum, then we can determine + * the active configuration without having to open the usbfs node in RDWR mode. + * We assume this is the case if we see the busnum file (indicates 2.6.22+). + * The busnum file is important as that is the only way we can relate sysfs + * devices to usbfs nodes. + * + * If we also have descriptors, we can obtain the device descriptor and active + * configuration without touching usbfs at all. + * + * The descriptors file originally only contained the active configuration + * descriptor alongside the device descriptor, but all configurations are + * included as of Linux 2.6.26. + */ + +/* endianness for multi-byte fields: + * + * Descriptors exposed by usbfs have the multi-byte fields in the device + * descriptor as host endian. Multi-byte fields in the other descriptors are + * bus-endian. The kernel documentation says otherwise, but it is wrong. + */ + +static const char *usbfs_path = NULL; + +/* use usbdev*.* device names in /dev instead of the usbfs bus directories */ +static int usbdev_names = 0; + +/* Linux 2.6.32 adds support for a bulk continuation URB flag. this basically + * allows us to mark URBs as being part of a specific logical transfer when + * we submit them to the kernel. then, on any error except a cancellation, all + * URBs within that transfer will be cancelled and no more URBs will be + * accepted for the transfer, meaning that no more data can creep in. + * + * The BULK_CONTINUATION flag must be set on all URBs within a bulk transfer + * (in either direction) except the first. + * For IN transfers, we must also set SHORT_NOT_OK on all URBs except the + * last; it means that the kernel should treat a short reply as an error. + * For OUT transfers, SHORT_NOT_OK must not be set. it isn't needed (OUT + * transfers can't be short unless there's already some sort of error), and + * setting this flag is disallowed (a kernel with USB debugging enabled will + * reject such URBs). + */ +static int supports_flag_bulk_continuation = -1; + +/* Linux 2.6.31 fixes support for the zero length packet URB flag. This + * allows us to mark URBs that should be followed by a zero length data + * packet, which can be required by device- or class-specific protocols. + */ +static int supports_flag_zero_packet = -1; + +/* clock ID for monotonic clock, as not all clock sources are available on all + * systems. appropriate choice made at initialization time. */ +static clockid_t monotonic_clkid = -1; + +/* do we have a busnum to relate devices? this also implies that we can read + * the active configuration through bConfigurationValue */ +static int sysfs_can_relate_devices = 0; + +/* do we have a descriptors file? */ +static int sysfs_has_descriptors = 0; + +struct linux_device_priv { + char *sysfs_dir; + unsigned char *dev_descriptor; + unsigned char *config_descriptor; +}; + +struct linux_device_handle_priv { + int fd; +}; + +enum reap_action { + NORMAL = 0, + /* submission failed after the first URB, so await cancellation/completion + * of all the others */ + SUBMIT_FAILED, + + /* cancelled by user or timeout */ + CANCELLED, + + /* completed multi-URB transfer in non-final URB */ + COMPLETED_EARLY, + + /* one or more urbs encountered a low-level error */ + ERROR, +}; + +struct linux_transfer_priv { + union { + struct usbfs_urb *urbs; + struct usbfs_urb **iso_urbs; + }; + + enum reap_action reap_action; + int num_urbs; + unsigned int num_retired; + enum libusb_transfer_status reap_status; + + /* next iso packet in user-supplied transfer to be populated */ + int iso_packet_offset; +}; + +static void _get_usbfs_path(struct libusb_device *dev, char *path) +{ + if (usbdev_names) + snprintf(path, PATH_MAX, "%s/usbdev%d.%d", + usbfs_path, dev->bus_number, dev->device_address); + else + snprintf(path, PATH_MAX, "%s/%03d/%03d", + usbfs_path, dev->bus_number, dev->device_address); +} + +static struct linux_device_priv *_device_priv(struct libusb_device *dev) +{ + return (struct linux_device_priv *) dev->os_priv; +} + +static struct linux_device_handle_priv *_device_handle_priv( + struct libusb_device_handle *handle) +{ + return (struct linux_device_handle_priv *) handle->os_priv; +} + +/* check dirent for a /dev/usbdev%d.%d name + * optionally return bus/device on success */ +static int _is_usbdev_entry(struct dirent *entry, int *bus_p, int *dev_p) +{ + int busnum, devnum; + + if (sscanf(entry->d_name, "usbdev%d.%d", &busnum, &devnum) != 2) + return 0; + + usbi_dbg("found: %s", entry->d_name); + if (bus_p != NULL) + *bus_p = busnum; + if (dev_p != NULL) + *dev_p = devnum; + return 1; +} + +static int check_usb_vfs(const char *dirname) +{ + DIR *dir; + struct dirent *entry; + int found = 0; + + dir = opendir(dirname); + if (!dir) + return 0; + + while ((entry = readdir(dir)) != NULL) { + if (entry->d_name[0] == '.') + continue; + + /* We assume if we find any files that it must be the right place */ + found = 1; + break; + } + + closedir(dir); + return found; +} + +static const char *find_usbfs_path(void) +{ + const char *path = "/dev/bus/usb"; + const char *ret = NULL; + + if (check_usb_vfs(path)) { + ret = path; + } else { + path = "/proc/bus/usb"; + if (check_usb_vfs(path)) + ret = path; + } + + /* look for /dev/usbdev*.* if the normal places fail */ + if (ret == NULL) { + struct dirent *entry; + DIR *dir; + + path = "/dev"; + dir = opendir(path); + if (dir != NULL) { + while ((entry = readdir(dir)) != NULL) { + if (_is_usbdev_entry(entry, NULL, NULL)) { + /* found one; that's enough */ + ret = path; + usbdev_names = 1; + break; + } + } + closedir(dir); + } + } + + if (ret != NULL) + usbi_dbg("found usbfs at %s", ret); + + return ret; +} + +/* the monotonic clock is not usable on all systems (e.g. embedded ones often + * seem to lack it). fall back to REALTIME if we have to. */ +static clockid_t find_monotonic_clock(void) +{ +#ifdef CLOCK_MONOTONIC + struct timespec ts; + int r; + + /* Linux 2.6.28 adds CLOCK_MONOTONIC_RAW but we don't use it + * because it's not available through timerfd */ + r = clock_gettime(CLOCK_MONOTONIC, &ts); + if (r == 0) + return CLOCK_MONOTONIC; + usbi_dbg("monotonic clock doesn't work, errno %d", errno); +#endif + + return CLOCK_REALTIME; +} + +static int kernel_version_ge(int major, int minor, int sublevel) +{ + struct utsname uts; + int atoms, kmajor, kminor, ksublevel; + + if (uname(&uts) < 0) + return -1; + atoms = sscanf(uts.release, "%d.%d.%d", &kmajor, &kminor, &ksublevel); + if (atoms < 1) + return -1; + + if (kmajor > major) + return 1; + if (kmajor < major) + return 0; + + /* kmajor == major */ + if (atoms < 2) + return 0 == minor && 0 == sublevel; + if (kminor > minor) + return 1; + if (kminor < minor) + return 0; + + /* kminor == minor */ + if (atoms < 3) + return 0 == sublevel; + + return ksublevel >= sublevel; +} + +/* Return 1 if filename exists inside dirname in sysfs. + SYSFS_DEVICE_PATH is assumed to be the beginning of the path. */ +static int sysfs_has_file(const char *dirname, const char *filename) +{ + struct stat statbuf; + char path[PATH_MAX]; + int r; + + snprintf(path, PATH_MAX, "%s/%s/%s", SYSFS_DEVICE_PATH, dirname, filename); + r = stat(path, &statbuf); + if (r == 0 && S_ISREG(statbuf.st_mode)) + return 1; + + return 0; +} + +static int op_init(struct libusb_context *ctx) +{ + struct stat statbuf; + int r; + + usbfs_path = find_usbfs_path(); + if (!usbfs_path) { + usbi_err(ctx, "could not find usbfs"); + return LIBUSB_ERROR_OTHER; + } + + if (monotonic_clkid == -1) + monotonic_clkid = find_monotonic_clock(); + + if (supports_flag_bulk_continuation == -1) { + /* bulk continuation URB flag available from Linux 2.6.32 */ + supports_flag_bulk_continuation = kernel_version_ge(2,6,32); + if (supports_flag_bulk_continuation == -1) { + usbi_err(ctx, "error checking for bulk continuation support"); + return LIBUSB_ERROR_OTHER; + } + } + + if (supports_flag_bulk_continuation) + usbi_dbg("bulk continuation flag supported"); + + if (-1 == supports_flag_zero_packet) { + /* zero length packet URB flag fixed since Linux 2.6.31 */ + supports_flag_zero_packet = kernel_version_ge(2,6,31); + if (-1 == supports_flag_zero_packet) { + usbi_err(ctx, "error checking for zero length packet support"); + return LIBUSB_ERROR_OTHER; + } + } + + if (supports_flag_zero_packet) + usbi_dbg("zero length packet flag supported"); + + r = stat(SYSFS_DEVICE_PATH, &statbuf); + if (r == 0 && S_ISDIR(statbuf.st_mode)) { + DIR *devices = opendir(SYSFS_DEVICE_PATH); + struct dirent *entry; + + usbi_dbg("found usb devices in sysfs"); + + if (!devices) { + usbi_err(ctx, "opendir devices failed errno=%d", errno); + return LIBUSB_ERROR_IO; + } + + /* Make sure sysfs supports all the required files. If it + * does not, then usbfs will be used instead. Determine + * this by looping through the directories in + * SYSFS_DEVICE_PATH. With the assumption that there will + * always be subdirectories of the name usbN (usb1, usb2, + * etc) representing the root hubs, check the usbN + * subdirectories to see if they have all the needed files. + * This algorithm uses the usbN subdirectories (root hubs) + * because a device disconnection will cause a race + * condition regarding which files are available, sometimes + * causing an incorrect result. The root hubs are used + * because it is assumed that they will always be present. + * See the "sysfs vs usbfs" comment at the top of this file + * for more details. */ + while ((entry = readdir(devices))) { + int has_busnum=0, has_devnum=0, has_descriptors=0; + int has_configuration_value=0; + + /* Only check the usbN directories. */ + if (strncmp(entry->d_name, "usb", 3) != 0) + continue; + + /* Check for the files libusb needs from sysfs. */ + has_busnum = sysfs_has_file(entry->d_name, "busnum"); + has_devnum = sysfs_has_file(entry->d_name, "devnum"); + has_descriptors = sysfs_has_file(entry->d_name, "descriptors"); + has_configuration_value = sysfs_has_file(entry->d_name, "bConfigurationValue"); + + if (has_busnum && has_devnum && has_configuration_value) + sysfs_can_relate_devices = 1; + if (has_descriptors) + sysfs_has_descriptors = 1; + + /* Only need to check until we've found ONE device which + has all the attributes. */ + if (sysfs_has_descriptors && sysfs_can_relate_devices) + break; + } + closedir(devices); + + /* Only use sysfs descriptors if the rest of + sysfs will work for libusb. */ + if (!sysfs_can_relate_devices) + sysfs_has_descriptors = 0; + } else { + usbi_dbg("sysfs usb info not available"); + sysfs_has_descriptors = 0; + sysfs_can_relate_devices = 0; + } + + return 0; +} + +static int usbfs_get_device_descriptor(struct libusb_device *dev, + unsigned char *buffer) +{ + struct linux_device_priv *priv = _device_priv(dev); + + /* return cached copy */ + memcpy(buffer, priv->dev_descriptor, DEVICE_DESC_LENGTH); + return 0; +} + +static int _open_sysfs_attr(struct libusb_device *dev, const char *attr) +{ + struct linux_device_priv *priv = _device_priv(dev); + char filename[PATH_MAX]; + int fd; + + snprintf(filename, PATH_MAX, "%s/%s/%s", + SYSFS_DEVICE_PATH, priv->sysfs_dir, attr); + fd = open(filename, O_RDONLY); + if (fd < 0) { + usbi_err(DEVICE_CTX(dev), + "open %s failed ret=%d errno=%d", filename, fd, errno); + return LIBUSB_ERROR_IO; + } + + return fd; +} + +/* Note only suitable for attributes which always read >= 0, < 0 is error */ +static int __read_sysfs_attr(struct libusb_context *ctx, + const char *devname, const char *attr) +{ + char filename[PATH_MAX]; + FILE *f; + int r, value; + + snprintf(filename, PATH_MAX, "%s/%s/%s", SYSFS_DEVICE_PATH, + devname, attr); + f = fopen(filename, "r"); + if (f == NULL) { + if (errno == ENOENT) { + /* File doesn't exist. Assume the device has been + disconnected (see trac ticket #70). */ + return LIBUSB_ERROR_NO_DEVICE; + } + usbi_err(ctx, "open %s failed errno=%d", filename, errno); + return LIBUSB_ERROR_IO; + } + + r = fscanf(f, "%d", &value); + fclose(f); + if (r != 1) { + usbi_err(ctx, "fscanf %s returned %d, errno=%d", attr, r, errno); + return LIBUSB_ERROR_NO_DEVICE; /* For unplug race (trac #70) */ + } + if (value < 0) { + usbi_err(ctx, "%s contains a negative value", filename); + return LIBUSB_ERROR_IO; + } + + return value; +} + +static int sysfs_get_device_descriptor(struct libusb_device *dev, + unsigned char *buffer) +{ + int fd; + ssize_t r; + + /* sysfs provides access to an in-memory copy of the device descriptor, + * so we use that rather than keeping our own copy */ + + fd = _open_sysfs_attr(dev, "descriptors"); + if (fd < 0) + return fd; + + r = read(fd, buffer, DEVICE_DESC_LENGTH);; + close(fd); + if (r < 0) { + usbi_err(DEVICE_CTX(dev), "read failed, ret=%d errno=%d", fd, errno); + return LIBUSB_ERROR_IO; + } else if (r < DEVICE_DESC_LENGTH) { + usbi_err(DEVICE_CTX(dev), "short read %d/%d", r, DEVICE_DESC_LENGTH); + return LIBUSB_ERROR_IO; + } + + return 0; +} + +static int op_get_device_descriptor(struct libusb_device *dev, + unsigned char *buffer, int *host_endian) +{ + if (sysfs_has_descriptors) { + return sysfs_get_device_descriptor(dev, buffer); + } else { + *host_endian = 1; + return usbfs_get_device_descriptor(dev, buffer); + } +} + +static int usbfs_get_active_config_descriptor(struct libusb_device *dev, + unsigned char *buffer, size_t len) +{ + struct linux_device_priv *priv = _device_priv(dev); + if (!priv->config_descriptor) + return LIBUSB_ERROR_NOT_FOUND; /* device is unconfigured */ + + /* retrieve cached copy */ + memcpy(buffer, priv->config_descriptor, len); + return 0; +} + +/* read the bConfigurationValue for a device */ +static int sysfs_get_active_config(struct libusb_device *dev, int *config) +{ + char *endptr; + char tmp[4] = {0, 0, 0, 0}; + long num; + int fd; + ssize_t r; + + fd = _open_sysfs_attr(dev, "bConfigurationValue"); + if (fd < 0) + return fd; + + r = read(fd, tmp, sizeof(tmp)); + close(fd); + if (r < 0) { + usbi_err(DEVICE_CTX(dev), + "read bConfigurationValue failed ret=%d errno=%d", r, errno); + return LIBUSB_ERROR_IO; + } else if (r == 0) { + usbi_dbg("device unconfigured"); + *config = -1; + return 0; + } + + if (tmp[sizeof(tmp) - 1] != 0) { + usbi_err(DEVICE_CTX(dev), "not null-terminated?"); + return LIBUSB_ERROR_IO; + } else if (tmp[0] == 0) { + usbi_err(DEVICE_CTX(dev), "no configuration value?"); + return LIBUSB_ERROR_IO; + } + + num = strtol(tmp, &endptr, 10); + if (endptr == tmp) { + usbi_err(DEVICE_CTX(dev), "error converting '%s' to integer", tmp); + return LIBUSB_ERROR_IO; + } + + *config = (int) num; + return 0; +} + +/* takes a usbfs/descriptors fd seeked to the start of a configuration, and + * seeks to the next one. */ +static int seek_to_next_config(struct libusb_context *ctx, int fd, + int host_endian) +{ + struct libusb_config_descriptor config; + unsigned char tmp[6]; + off_t off; + ssize_t r; + + /* read first 6 bytes of descriptor */ + r = read(fd, tmp, sizeof(tmp)); + if (r < 0) { + usbi_err(ctx, "read failed ret=%d errno=%d", r, errno); + return LIBUSB_ERROR_IO; + } else if (r < sizeof(tmp)) { + usbi_err(ctx, "short descriptor read %d/%d", r, sizeof(tmp)); + return LIBUSB_ERROR_IO; + } + + /* seek forward to end of config */ + usbi_parse_descriptor(tmp, "bbwbb", &config, host_endian); + off = lseek(fd, config.wTotalLength - sizeof(tmp), SEEK_CUR); + if (off < 0) { + usbi_err(ctx, "seek failed ret=%d errno=%d", off, errno); + return LIBUSB_ERROR_IO; + } + + return 0; +} + +static int sysfs_get_active_config_descriptor(struct libusb_device *dev, + unsigned char *buffer, size_t len) +{ + int fd; + ssize_t r; + off_t off; + int to_copy; + int config; + unsigned char tmp[6]; + + r = sysfs_get_active_config(dev, &config); + if (r < 0) + return r; + if (config == -1) + return LIBUSB_ERROR_NOT_FOUND; + + usbi_dbg("active configuration %d", config); + + /* sysfs provides access to an in-memory copy of the device descriptor, + * so we use that rather than keeping our own copy */ + + fd = _open_sysfs_attr(dev, "descriptors"); + if (fd < 0) + return fd; + + /* device might have been unconfigured since we read bConfigurationValue, + * so first check that there is any config descriptor data at all... */ + off = lseek(fd, 0, SEEK_END); + if (off < 1) { + usbi_err(DEVICE_CTX(dev), "end seek failed, ret=%d errno=%d", + off, errno); + close(fd); + return LIBUSB_ERROR_IO; + } else if (off == DEVICE_DESC_LENGTH) { + close(fd); + return LIBUSB_ERROR_NOT_FOUND; + } + + off = lseek(fd, DEVICE_DESC_LENGTH, SEEK_SET); + if (off < 0) { + usbi_err(DEVICE_CTX(dev), "seek failed, ret=%d errno=%d", off, errno); + close(fd); + return LIBUSB_ERROR_IO; + } + + /* unbounded loop: we expect the descriptor to be present under all + * circumstances */ + while (1) { + r = read(fd, tmp, sizeof(tmp)); + if (r < 0) { + usbi_err(DEVICE_CTX(dev), "read failed, ret=%d errno=%d", + fd, errno); + return LIBUSB_ERROR_IO; + } else if (r < sizeof(tmp)) { + usbi_err(DEVICE_CTX(dev), "short read %d/%d", r, sizeof(tmp)); + return LIBUSB_ERROR_IO; + } + + /* check bConfigurationValue */ + if (tmp[5] == config) + break; + + /* try the next descriptor */ + off = lseek(fd, 0 - sizeof(tmp), SEEK_CUR); + if (off < 0) + return LIBUSB_ERROR_IO; + + r = seek_to_next_config(DEVICE_CTX(dev), fd, 0); + if (r < 0) + return r; + } + + to_copy = (len < sizeof(tmp)) ? len : sizeof(tmp); + memcpy(buffer, tmp, to_copy); + if (len > sizeof(tmp)) { + r = read(fd, buffer + sizeof(tmp), len - sizeof(tmp)); + if (r < 0) { + usbi_err(DEVICE_CTX(dev), "read failed, ret=%d errno=%d", + fd, errno); + r = LIBUSB_ERROR_IO; + } else if (r == 0) { + usbi_dbg("device is unconfigured"); + r = LIBUSB_ERROR_NOT_FOUND; + } else if (r < len - sizeof(tmp)) { + usbi_err(DEVICE_CTX(dev), "short read %d/%d", r, len); + r = LIBUSB_ERROR_IO; + } + } else { + r = 0; + } + + close(fd); + return r; +} + +static int op_get_active_config_descriptor(struct libusb_device *dev, + unsigned char *buffer, size_t len, int *host_endian) +{ + if (sysfs_has_descriptors) { + return sysfs_get_active_config_descriptor(dev, buffer, len); + } else { + return usbfs_get_active_config_descriptor(dev, buffer, len); + } +} + +/* takes a usbfs fd, attempts to find the requested config and copy a certain + * amount of it into an output buffer. */ +static int get_config_descriptor(struct libusb_context *ctx, int fd, + uint8_t config_index, unsigned char *buffer, size_t len) +{ + off_t off; + ssize_t r; + + off = lseek(fd, DEVICE_DESC_LENGTH, SEEK_SET); + if (off < 0) { + usbi_err(ctx, "seek failed ret=%d errno=%d", off, errno); + return LIBUSB_ERROR_IO; + } + + /* might need to skip some configuration descriptors to reach the + * requested configuration */ + while (config_index > 0) { + r = seek_to_next_config(ctx, fd, 1); + if (r < 0) + return r; + config_index--; + } + + /* read the rest of the descriptor */ + r = read(fd, buffer, len); + if (r < 0) { + usbi_err(ctx, "read failed ret=%d errno=%d", r, errno); + return LIBUSB_ERROR_IO; + } else if (r < len) { + usbi_err(ctx, "short output read %d/%d", r, len); + return LIBUSB_ERROR_IO; + } + + return 0; +} + +static int op_get_config_descriptor(struct libusb_device *dev, + uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian) +{ + char filename[PATH_MAX]; + int fd; + int r; + + /* always read from usbfs: sysfs only has the active descriptor + * this will involve waking the device up, but oh well! */ + + /* FIXME: the above is no longer true, new kernels have all descriptors + * in the descriptors file. but its kinda hard to detect if the kernel + * is sufficiently new. */ + + _get_usbfs_path(dev, filename); + fd = open(filename, O_RDONLY); + if (fd < 0) { + usbi_err(DEVICE_CTX(dev), + "open '%s' failed, ret=%d errno=%d", filename, fd, errno); + return LIBUSB_ERROR_IO; + } + + r = get_config_descriptor(DEVICE_CTX(dev), fd, config_index, buffer, len); + close(fd); + return r; +} + +/* cache the active config descriptor in memory. a value of -1 means that + * we aren't sure which one is active, so just assume the first one. + * only for usbfs. */ +static int cache_active_config(struct libusb_device *dev, int fd, + int active_config) +{ + struct linux_device_priv *priv = _device_priv(dev); + struct libusb_config_descriptor config; + unsigned char tmp[8]; + unsigned char *buf; + int idx; + int r; + + if (active_config == -1) { + idx = 0; + } else { + r = usbi_get_config_index_by_value(dev, active_config, &idx); + if (r < 0) + return r; + if (idx == -1) + return LIBUSB_ERROR_NOT_FOUND; + } + + r = get_config_descriptor(DEVICE_CTX(dev), fd, idx, tmp, sizeof(tmp)); + if (r < 0) { + usbi_err(DEVICE_CTX(dev), "first read error %d", r); + return r; + } + + usbi_parse_descriptor(tmp, "bbw", &config, 0); + buf = malloc(config.wTotalLength); + if (!buf) + return LIBUSB_ERROR_NO_MEM; + + r = get_config_descriptor(DEVICE_CTX(dev), fd, idx, buf, + config.wTotalLength); + if (r < 0) { + free(buf); + return r; + } + + if (priv->config_descriptor) + free(priv->config_descriptor); + priv->config_descriptor = buf; + return 0; +} + +/* send a control message to retrieve active configuration */ +static int usbfs_get_active_config(struct libusb_device *dev, int fd) +{ + unsigned char active_config = 0; + int r; + + struct usbfs_ctrltransfer ctrl = { + .bmRequestType = LIBUSB_ENDPOINT_IN, + .bRequest = LIBUSB_REQUEST_GET_CONFIGURATION, + .wValue = 0, + .wIndex = 0, + .wLength = 1, + .timeout = 1000, + .data = &active_config + }; + + r = ioctl(fd, IOCTL_USBFS_CONTROL, &ctrl); + if (r < 0) { + if (errno == ENODEV) + return LIBUSB_ERROR_NO_DEVICE; + + /* we hit this error path frequently with buggy devices :( */ + usbi_warn(DEVICE_CTX(dev), + "get_configuration failed ret=%d errno=%d", r, errno); + return LIBUSB_ERROR_IO; + } + + return active_config; +} + +static int initialize_device(struct libusb_device *dev, uint8_t busnum, + uint8_t devaddr, const char *sysfs_dir) +{ + struct linux_device_priv *priv = _device_priv(dev); + unsigned char *dev_buf; + char path[PATH_MAX]; + int fd, speed; + int active_config = 0; + int device_configured = 1; + ssize_t r; + + dev->bus_number = busnum; + dev->device_address = devaddr; + + if (sysfs_dir) { + priv->sysfs_dir = malloc(strlen(sysfs_dir) + 1); + if (!priv->sysfs_dir) + return LIBUSB_ERROR_NO_MEM; + strcpy(priv->sysfs_dir, sysfs_dir); + + /* Note speed can contain 1.5, in this case __read_sysfs_attr + will stop parsing at the '.' and return 1 */ + speed = __read_sysfs_attr(DEVICE_CTX(dev), sysfs_dir, "speed"); + if (speed >= 0) { + switch (speed) { + case 1: dev->speed = LIBUSB_SPEED_LOW; break; + case 12: dev->speed = LIBUSB_SPEED_FULL; break; + case 480: dev->speed = LIBUSB_SPEED_HIGH; break; + case 5000: dev->speed = LIBUSB_SPEED_SUPER; break; + default: + usbi_warn(DEVICE_CTX(dev), "Unknown device speed: %d Mbps", speed); + } + } + } + + if (sysfs_has_descriptors) + return 0; + + /* cache device descriptor in memory so that we can retrieve it later + * without waking the device up (op_get_device_descriptor) */ + + priv->dev_descriptor = NULL; + priv->config_descriptor = NULL; + + if (sysfs_can_relate_devices) { + int tmp = sysfs_get_active_config(dev, &active_config); + if (tmp < 0) + return tmp; + if (active_config == -1) + device_configured = 0; + } + + _get_usbfs_path(dev, path); + fd = open(path, O_RDWR); + if (fd < 0 && errno == EACCES) { + fd = open(path, O_RDONLY); + /* if we only have read-only access to the device, we cannot + * send a control message to determine the active config. just + * assume the first one is active. */ + active_config = -1; + } + + if (fd < 0) { + usbi_err(DEVICE_CTX(dev), "open failed, ret=%d errno=%d", fd, errno); + return LIBUSB_ERROR_IO; + } + + if (!sysfs_can_relate_devices) { + if (active_config == -1) { + /* if we only have read-only access to the device, we cannot + * send a control message to determine the active config. just + * assume the first one is active. */ + usbi_warn(DEVICE_CTX(dev), "access to %s is read-only; cannot " + "determine active configuration descriptor", path); + } else { + active_config = usbfs_get_active_config(dev, fd); + if (active_config == LIBUSB_ERROR_IO) { + /* buggy devices sometimes fail to report their active config. + * assume unconfigured and continue the probing */ + usbi_warn(DEVICE_CTX(dev), "couldn't query active " + "configuration, assumung unconfigured"); + device_configured = 0; + } else if (active_config < 0) { + close(fd); + return active_config; + } else if (active_config == 0) { + /* some buggy devices have a configuration 0, but we're + * reaching into the corner of a corner case here, so let's + * not support buggy devices in these circumstances. + * stick to the specs: a configuration value of 0 means + * unconfigured. */ + usbi_dbg("active cfg 0? assuming unconfigured device"); + device_configured = 0; + } + } + } + + dev_buf = malloc(DEVICE_DESC_LENGTH); + if (!dev_buf) { + close(fd); + return LIBUSB_ERROR_NO_MEM; + } + + r = read(fd, dev_buf, DEVICE_DESC_LENGTH); + if (r < 0) { + usbi_err(DEVICE_CTX(dev), + "read descriptor failed ret=%d errno=%d", fd, errno); + free(dev_buf); + close(fd); + return LIBUSB_ERROR_IO; + } else if (r < DEVICE_DESC_LENGTH) { + usbi_err(DEVICE_CTX(dev), "short descriptor read (%d)", r); + free(dev_buf); + close(fd); + return LIBUSB_ERROR_IO; + } + + /* bit of a hack: set num_configurations now because cache_active_config() + * calls usbi_get_config_index_by_value() which uses it */ + dev->num_configurations = dev_buf[DEVICE_DESC_LENGTH - 1]; + + if (device_configured) { + r = cache_active_config(dev, fd, active_config); + if (r < 0) { + close(fd); + free(dev_buf); + return r; + } + } + + close(fd); + priv->dev_descriptor = dev_buf; + return 0; +} + +static int enumerate_device(struct libusb_context *ctx, + struct discovered_devs **_discdevs, uint8_t busnum, uint8_t devaddr, + const char *sysfs_dir) +{ + struct discovered_devs *discdevs; + unsigned long session_id; + int need_unref = 0; + struct libusb_device *dev; + int r = 0; + + /* FIXME: session ID is not guaranteed unique as addresses can wrap and + * will be reused. instead we should add a simple sysfs attribute with + * a session ID. */ + session_id = busnum << 8 | devaddr; + usbi_dbg("busnum %d devaddr %d session_id %ld", busnum, devaddr, + session_id); + + dev = usbi_get_device_by_session_id(ctx, session_id); + if (dev) { + usbi_dbg("using existing device for %d/%d (session %ld)", + busnum, devaddr, session_id); + } else { + usbi_dbg("allocating new device for %d/%d (session %ld)", + busnum, devaddr, session_id); + dev = usbi_alloc_device(ctx, session_id); + if (!dev) + return LIBUSB_ERROR_NO_MEM; + need_unref = 1; + r = initialize_device(dev, busnum, devaddr, sysfs_dir); + if (r < 0) + goto out; + r = usbi_sanitize_device(dev); + if (r < 0) + goto out; + } + + discdevs = discovered_devs_append(*_discdevs, dev); + if (!discdevs) + r = LIBUSB_ERROR_NO_MEM; + else + *_discdevs = discdevs; + +out: + if (need_unref) + libusb_unref_device(dev); + return r; +} + +/* open a bus directory and adds all discovered devices to discdevs. on + * failure (non-zero return) the pre-existing discdevs should be destroyed + * (and devices freed). on success, the new discdevs pointer should be used + * as it may have been moved. */ +static int usbfs_scan_busdir(struct libusb_context *ctx, + struct discovered_devs **_discdevs, uint8_t busnum) +{ + DIR *dir; + char dirpath[PATH_MAX]; + struct dirent *entry; + struct discovered_devs *discdevs = *_discdevs; + int r = LIBUSB_ERROR_IO; + + snprintf(dirpath, PATH_MAX, "%s/%03d", usbfs_path, busnum); + usbi_dbg("%s", dirpath); + dir = opendir(dirpath); + if (!dir) { + usbi_err(ctx, "opendir '%s' failed, errno=%d", dirpath, errno); + /* FIXME: should handle valid race conditions like hub unplugged + * during directory iteration - this is not an error */ + return r; + } + + while ((entry = readdir(dir))) { + int devaddr; + + if (entry->d_name[0] == '.') + continue; + + devaddr = atoi(entry->d_name); + if (devaddr == 0) { + usbi_dbg("unknown dir entry %s", entry->d_name); + continue; + } + + if (enumerate_device(ctx, &discdevs, busnum, (uint8_t) devaddr, NULL)) { + usbi_dbg("failed to enumerate dir entry %s", entry->d_name); + continue; + } + + r = 0; + } + + if (!r) + *_discdevs = discdevs; + closedir(dir); + return r; +} + +static int usbfs_get_device_list(struct libusb_context *ctx, + struct discovered_devs **_discdevs) +{ + struct dirent *entry; + DIR *buses = opendir(usbfs_path); + struct discovered_devs *discdevs = *_discdevs; + int r = 0; + + if (!buses) { + usbi_err(ctx, "opendir buses failed errno=%d", errno); + return LIBUSB_ERROR_IO; + } + + while ((entry = readdir(buses))) { + struct discovered_devs *discdevs_new = discdevs; + int busnum; + + if (entry->d_name[0] == '.') + continue; + + if (usbdev_names) { + int devaddr; + if (!_is_usbdev_entry(entry, &busnum, &devaddr)) + continue; + + r = enumerate_device(ctx, &discdevs_new, busnum, + (uint8_t) devaddr, NULL); + if (r < 0) { + usbi_dbg("failed to enumerate dir entry %s", entry->d_name); + continue; + } + } else { + busnum = atoi(entry->d_name); + if (busnum == 0) { + usbi_dbg("unknown dir entry %s", entry->d_name); + continue; + } + + r = usbfs_scan_busdir(ctx, &discdevs_new, busnum); + if (r < 0) + goto out; + } + discdevs = discdevs_new; + } + +out: + closedir(buses); + *_discdevs = discdevs; + return r; + +} + +static int sysfs_scan_device(struct libusb_context *ctx, + struct discovered_devs **_discdevs, const char *devname) +{ + int busnum; + int devaddr; + + usbi_dbg("scan %s", devname); + + busnum = __read_sysfs_attr(ctx, devname, "busnum"); + if (busnum < 0) + return busnum; + + devaddr = __read_sysfs_attr(ctx, devname, "devnum"); + if (devaddr < 0) + return devaddr; + + usbi_dbg("bus=%d dev=%d", busnum, devaddr); + if (busnum > 255 || devaddr > 255) + return LIBUSB_ERROR_INVALID_PARAM; + + return enumerate_device(ctx, _discdevs, busnum & 0xff, devaddr & 0xff, + devname); +} + +static int sysfs_get_device_list(struct libusb_context *ctx, + struct discovered_devs **_discdevs) +{ + struct discovered_devs *discdevs = *_discdevs; + DIR *devices = opendir(SYSFS_DEVICE_PATH); + struct dirent *entry; + int r = LIBUSB_ERROR_IO; + + if (!devices) { + usbi_err(ctx, "opendir devices failed errno=%d", errno); + return r; + } + + while ((entry = readdir(devices))) { + struct discovered_devs *discdevs_new = discdevs; + + if ((!isdigit(entry->d_name[0]) && strncmp(entry->d_name, "usb", 3)) + || strchr(entry->d_name, ':')) + continue; + + if (sysfs_scan_device(ctx, &discdevs_new, entry->d_name)) { + usbi_dbg("failed to enumerate dir entry %s", entry->d_name); + continue; + } + + r = 0; + discdevs = discdevs_new; + } + + if (!r) + *_discdevs = discdevs; + closedir(devices); + return r; +} + +static int op_get_device_list(struct libusb_context *ctx, + struct discovered_devs **_discdevs) +{ + /* we can retrieve device list and descriptors from sysfs or usbfs. + * sysfs is preferable, because if we use usbfs we end up resuming + * any autosuspended USB devices. however, sysfs is not available + * everywhere, so we need a usbfs fallback too. + * + * as described in the "sysfs vs usbfs" comment at the top of this + * file, sometimes we have sysfs but not enough information to + * relate sysfs devices to usbfs nodes. op_init() determines the + * adequacy of sysfs and sets sysfs_can_relate_devices. + */ + if (sysfs_can_relate_devices != 0) + return sysfs_get_device_list(ctx, _discdevs); + else + return usbfs_get_device_list(ctx, _discdevs); +} + +static int op_open(struct libusb_device_handle *handle) +{ + struct linux_device_handle_priv *hpriv = _device_handle_priv(handle); + char filename[PATH_MAX]; + + _get_usbfs_path(handle->dev, filename); + usbi_dbg("opening %s", filename); + hpriv->fd = open(filename, O_RDWR); + if (hpriv->fd < 0) { + if (errno == EACCES) { + usbi_err(HANDLE_CTX(handle), "libusb couldn't open USB device %s: " + "Permission denied.", filename); + usbi_err(HANDLE_CTX(handle), + "libusb requires write access to USB device nodes."); + return LIBUSB_ERROR_ACCESS; + } else if (errno == ENOENT) { + usbi_err(HANDLE_CTX(handle), "libusb couldn't open USB device %s: " + "No such file or directory.", filename); + return LIBUSB_ERROR_NO_DEVICE; + } else { + usbi_err(HANDLE_CTX(handle), + "open failed, code %d errno %d", hpriv->fd, errno); + return LIBUSB_ERROR_IO; + } + } + + return usbi_add_pollfd(HANDLE_CTX(handle), hpriv->fd, POLLOUT); +} + +static void op_close(struct libusb_device_handle *dev_handle) +{ + int fd = _device_handle_priv(dev_handle)->fd; + usbi_remove_pollfd(HANDLE_CTX(dev_handle), fd); + close(fd); +} + +static int op_get_configuration(struct libusb_device_handle *handle, + int *config) +{ + int r; + if (sysfs_can_relate_devices != 1) + return LIBUSB_ERROR_NOT_SUPPORTED; + + r = sysfs_get_active_config(handle->dev, config); + if (r < 0) + return r; + + if (*config == -1) { + usbi_err(HANDLE_CTX(handle), "device unconfigured"); + *config = 0; + } + + return 0; +} + +static int op_set_configuration(struct libusb_device_handle *handle, int config) +{ + struct linux_device_priv *priv = _device_priv(handle->dev); + int fd = _device_handle_priv(handle)->fd; + int r = ioctl(fd, IOCTL_USBFS_SETCONFIG, &config); + if (r) { + if (errno == EINVAL) + return LIBUSB_ERROR_NOT_FOUND; + else if (errno == EBUSY) + return LIBUSB_ERROR_BUSY; + else if (errno == ENODEV) + return LIBUSB_ERROR_NO_DEVICE; + + usbi_err(HANDLE_CTX(handle), "failed, error %d errno %d", r, errno); + return LIBUSB_ERROR_OTHER; + } + + if (!sysfs_has_descriptors) { + /* update our cached active config descriptor */ + if (config == -1) { + if (priv->config_descriptor) { + free(priv->config_descriptor); + priv->config_descriptor = NULL; + } + } else { + r = cache_active_config(handle->dev, fd, config); + if (r < 0) + usbi_warn(HANDLE_CTX(handle), + "failed to update cached config descriptor, error %d", r); + } + } + + return 0; +} + +static int op_claim_interface(struct libusb_device_handle *handle, int iface) +{ + int fd = _device_handle_priv(handle)->fd; + int r = ioctl(fd, IOCTL_USBFS_CLAIMINTF, &iface); + if (r) { + if (errno == ENOENT) + return LIBUSB_ERROR_NOT_FOUND; + else if (errno == EBUSY) + return LIBUSB_ERROR_BUSY; + else if (errno == ENODEV) + return LIBUSB_ERROR_NO_DEVICE; + + usbi_err(HANDLE_CTX(handle), + "claim interface failed, error %d errno %d", r, errno); + return LIBUSB_ERROR_OTHER; + } + return 0; +} + +static int op_release_interface(struct libusb_device_handle *handle, int iface) +{ + int fd = _device_handle_priv(handle)->fd; + int r = ioctl(fd, IOCTL_USBFS_RELEASEINTF, &iface); + if (r) { + if (errno == ENODEV) + return LIBUSB_ERROR_NO_DEVICE; + + usbi_err(HANDLE_CTX(handle), + "release interface failed, error %d errno %d", r, errno); + return LIBUSB_ERROR_OTHER; + } + return 0; +} + +static int op_set_interface(struct libusb_device_handle *handle, int iface, + int altsetting) +{ + int fd = _device_handle_priv(handle)->fd; + struct usbfs_setinterface setintf; + int r; + + setintf.interface = iface; + setintf.altsetting = altsetting; + r = ioctl(fd, IOCTL_USBFS_SETINTF, &setintf); + if (r) { + if (errno == EINVAL) + return LIBUSB_ERROR_NOT_FOUND; + else if (errno == ENODEV) + return LIBUSB_ERROR_NO_DEVICE; + + usbi_err(HANDLE_CTX(handle), + "setintf failed error %d errno %d", r, errno); + return LIBUSB_ERROR_OTHER; + } + + return 0; +} + +static int op_clear_halt(struct libusb_device_handle *handle, + unsigned char endpoint) +{ + int fd = _device_handle_priv(handle)->fd; + unsigned int _endpoint = endpoint; + int r = ioctl(fd, IOCTL_USBFS_CLEAR_HALT, &_endpoint); + if (r) { + if (errno == ENOENT) + return LIBUSB_ERROR_NOT_FOUND; + else if (errno == ENODEV) + return LIBUSB_ERROR_NO_DEVICE; + + usbi_err(HANDLE_CTX(handle), + "clear_halt failed error %d errno %d", r, errno); + return LIBUSB_ERROR_OTHER; + } + + return 0; +} + +static int op_reset_device(struct libusb_device_handle *handle) +{ + int fd = _device_handle_priv(handle)->fd; + int i, r, ret = 0; + + /* Doing a device reset will cause the usbfs driver to get unbound + from any interfaces it is bound to. By voluntarily unbinding + the usbfs driver ourself, we stop the kernel from rebinding + the interface after reset (which would end up with the interface + getting bound to the in kernel driver if any). */ + for (i = 0; i < USB_MAXINTERFACES; i++) { + if (handle->claimed_interfaces & (1L << i)) { + op_release_interface(handle, i); + } + } + + usbi_mutex_lock(&handle->lock); + r = ioctl(fd, IOCTL_USBFS_RESET, NULL); + if (r) { + if (errno == ENODEV) { + ret = LIBUSB_ERROR_NOT_FOUND; + goto out; + } + + usbi_err(HANDLE_CTX(handle), + "reset failed error %d errno %d", r, errno); + ret = LIBUSB_ERROR_OTHER; + goto out; + } + + /* And re-claim any interfaces which were claimed before the reset */ + for (i = 0; i < USB_MAXINTERFACES; i++) { + if (handle->claimed_interfaces & (1L << i)) { + r = op_claim_interface(handle, i); + if (r) { + usbi_warn(HANDLE_CTX(handle), + "failed to re-claim interface %d after reset", i); + handle->claimed_interfaces &= ~(1L << i); + } + } + } +out: + usbi_mutex_unlock(&handle->lock); + return ret; +} + +static int op_kernel_driver_active(struct libusb_device_handle *handle, + int interface) +{ + int fd = _device_handle_priv(handle)->fd; + struct usbfs_getdriver getdrv; + int r; + + getdrv.interface = interface; + r = ioctl(fd, IOCTL_USBFS_GETDRIVER, &getdrv); + if (r) { + if (errno == ENODATA) + return 0; + else if (errno == ENODEV) + return LIBUSB_ERROR_NO_DEVICE; + + usbi_err(HANDLE_CTX(handle), + "get driver failed error %d errno %d", r, errno); + return LIBUSB_ERROR_OTHER; + } + + return 1; +} + +static int op_detach_kernel_driver(struct libusb_device_handle *handle, + int interface) +{ + int fd = _device_handle_priv(handle)->fd; + struct usbfs_ioctl command; + int r; + + command.ifno = interface; + command.ioctl_code = IOCTL_USBFS_DISCONNECT; + command.data = NULL; + + r = ioctl(fd, IOCTL_USBFS_IOCTL, &command); + if (r) { + if (errno == ENODATA) + return LIBUSB_ERROR_NOT_FOUND; + else if (errno == EINVAL) + return LIBUSB_ERROR_INVALID_PARAM; + else if (errno == ENODEV) + return LIBUSB_ERROR_NO_DEVICE; + + usbi_err(HANDLE_CTX(handle), + "detach failed error %d errno %d", r, errno); + return LIBUSB_ERROR_OTHER; + } + + return 0; +} + +static int op_attach_kernel_driver(struct libusb_device_handle *handle, + int interface) +{ + int fd = _device_handle_priv(handle)->fd; + struct usbfs_ioctl command; + int r; + + command.ifno = interface; + command.ioctl_code = IOCTL_USBFS_CONNECT; + command.data = NULL; + + r = ioctl(fd, IOCTL_USBFS_IOCTL, &command); + if (r < 0) { + if (errno == ENODATA) + return LIBUSB_ERROR_NOT_FOUND; + else if (errno == EINVAL) + return LIBUSB_ERROR_INVALID_PARAM; + else if (errno == ENODEV) + return LIBUSB_ERROR_NO_DEVICE; + else if (errno == EBUSY) + return LIBUSB_ERROR_BUSY; + + usbi_err(HANDLE_CTX(handle), + "attach failed error %d errno %d", r, errno); + return LIBUSB_ERROR_OTHER; + } else if (r == 0) { + return LIBUSB_ERROR_NOT_FOUND; + } + + return 0; +} + +static void op_destroy_device(struct libusb_device *dev) +{ + struct linux_device_priv *priv = _device_priv(dev); + if (!sysfs_has_descriptors) { + if (priv->dev_descriptor) + free(priv->dev_descriptor); + if (priv->config_descriptor) + free(priv->config_descriptor); + } + if (priv->sysfs_dir) + free(priv->sysfs_dir); +} + +/* URBs are discarded in reverse order of submission to avoid races. */ +static int discard_urbs(struct usbi_transfer *itransfer, int first, int last_plus_one) +{ + struct libusb_transfer *transfer = + USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct linux_transfer_priv *tpriv = + usbi_transfer_get_os_priv(itransfer); + struct linux_device_handle_priv *dpriv = + _device_handle_priv(transfer->dev_handle); + int i, ret = 0; + struct usbfs_urb *urb; + + for (i = last_plus_one - 1; i >= first; i--) { + if (LIBUSB_TRANSFER_TYPE_ISOCHRONOUS == transfer->type) + urb = tpriv->iso_urbs[i]; + else + urb = &tpriv->urbs[i]; + + if (0 == ioctl(dpriv->fd, IOCTL_USBFS_DISCARDURB, urb)) + continue; + + if (EINVAL == errno) { + usbi_dbg("URB not found --> assuming ready to be reaped"); + if (i == (last_plus_one - 1)) + ret = LIBUSB_ERROR_NOT_FOUND; + } else if (ENODEV == errno) { + usbi_dbg("Device not found for URB --> assuming ready to be reaped"); + ret = LIBUSB_ERROR_NO_DEVICE; + } else { + usbi_warn(TRANSFER_CTX(transfer), + "unrecognised discard errno %d", errno); + ret = LIBUSB_ERROR_OTHER; + } + } + return ret; +} + +static void free_iso_urbs(struct linux_transfer_priv *tpriv) +{ + int i; + for (i = 0; i < tpriv->num_urbs; i++) { + struct usbfs_urb *urb = tpriv->iso_urbs[i]; + if (!urb) + break; + free(urb); + } + + free(tpriv->iso_urbs); + tpriv->iso_urbs = NULL; +} + +static int submit_bulk_transfer(struct usbi_transfer *itransfer, + unsigned char urb_type) +{ + struct libusb_transfer *transfer = + USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); + struct linux_device_handle_priv *dpriv = + _device_handle_priv(transfer->dev_handle); + struct usbfs_urb *urbs; + int is_out = (transfer->endpoint & LIBUSB_ENDPOINT_DIR_MASK) + == LIBUSB_ENDPOINT_OUT; + int r; + int i; + size_t alloc_size; + + if (tpriv->urbs) + return LIBUSB_ERROR_BUSY; + + if (is_out && transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET && + !supports_flag_zero_packet) + return LIBUSB_ERROR_NOT_SUPPORTED; + + /* usbfs places a 16kb limit on bulk URBs. we divide up larger requests + * into smaller units to meet such restriction, then fire off all the + * units at once. it would be simpler if we just fired one unit at a time, + * but there is a big performance gain through doing it this way. */ + int num_urbs = transfer->length / MAX_BULK_BUFFER_LENGTH; + int last_urb_partial = 0; + + if (transfer->length == 0) { + num_urbs = 1; + } else if ((transfer->length % MAX_BULK_BUFFER_LENGTH) > 0) { + last_urb_partial = 1; + num_urbs++; + } + usbi_dbg("need %d urbs for new transfer with length %d", num_urbs, + transfer->length); + alloc_size = num_urbs * sizeof(struct usbfs_urb); + urbs = malloc(alloc_size); + if (!urbs) + return LIBUSB_ERROR_NO_MEM; + memset(urbs, 0, alloc_size); + tpriv->urbs = urbs; + tpriv->num_urbs = num_urbs; + tpriv->num_retired = 0; + tpriv->reap_action = NORMAL; + tpriv->reap_status = LIBUSB_TRANSFER_COMPLETED; + + for (i = 0; i < num_urbs; i++) { + struct usbfs_urb *urb = &urbs[i]; + urb->usercontext = itransfer; + urb->type = urb_type; + urb->endpoint = transfer->endpoint; + urb->buffer = transfer->buffer + (i * MAX_BULK_BUFFER_LENGTH); + if (supports_flag_bulk_continuation && !is_out) + urb->flags = USBFS_URB_SHORT_NOT_OK; + if (i == num_urbs - 1 && last_urb_partial) + urb->buffer_length = transfer->length % MAX_BULK_BUFFER_LENGTH; + else if (transfer->length == 0) + urb->buffer_length = 0; + else + urb->buffer_length = MAX_BULK_BUFFER_LENGTH; + + if (i > 0 && supports_flag_bulk_continuation) + urb->flags |= USBFS_URB_BULK_CONTINUATION; + + /* we have already checked that the flag is supported */ + if (is_out && i == num_urbs - 1 && + transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) + urb->flags |= USBFS_URB_ZERO_PACKET; + + r = ioctl(dpriv->fd, IOCTL_USBFS_SUBMITURB, urb); + if (r < 0) { + if (errno == ENODEV) { + r = LIBUSB_ERROR_NO_DEVICE; + } else { + usbi_err(TRANSFER_CTX(transfer), + "submiturb failed error %d errno=%d", r, errno); + r = LIBUSB_ERROR_IO; + } + + /* if the first URB submission fails, we can simply free up and + * return failure immediately. */ + if (i == 0) { + usbi_dbg("first URB failed, easy peasy"); + free(urbs); + tpriv->urbs = NULL; + return r; + } + + /* if it's not the first URB that failed, the situation is a bit + * tricky. we may need to discard all previous URBs. there are + * complications: + * - discarding is asynchronous - discarded urbs will be reaped + * later. the user must not have freed the transfer when the + * discarded URBs are reaped, otherwise libusb will be using + * freed memory. + * - the earlier URBs may have completed successfully and we do + * not want to throw away any data. + * - this URB failing may be no error; EREMOTEIO means that + * this transfer simply didn't need all the URBs we submitted + * so, we report that the transfer was submitted successfully and + * in case of error we discard all previous URBs. later when + * the final reap completes we can report error to the user, + * or success if an earlier URB was completed successfully. + */ + tpriv->reap_action = EREMOTEIO == errno ? COMPLETED_EARLY : SUBMIT_FAILED; + + /* The URBs we haven't submitted yet we count as already + * retired. */ + tpriv->num_retired += num_urbs - i; + + /* If we completed short then don't try to discard. */ + if (COMPLETED_EARLY == tpriv->reap_action) + return 0; + + discard_urbs(itransfer, 0, i); + + usbi_dbg("reporting successful submission but waiting for %d " + "discards before reporting error", i); + return 0; + } + } + + return 0; +} + +static int submit_iso_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = + USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); + struct linux_device_handle_priv *dpriv = + _device_handle_priv(transfer->dev_handle); + struct usbfs_urb **urbs; + size_t alloc_size; + int num_packets = transfer->num_iso_packets; + int i; + int this_urb_len = 0; + int num_urbs = 1; + int packet_offset = 0; + unsigned int packet_len; + unsigned char *urb_buffer = transfer->buffer; + + if (tpriv->iso_urbs) + return LIBUSB_ERROR_BUSY; + + /* usbfs places a 32kb limit on iso URBs. we divide up larger requests + * into smaller units to meet such restriction, then fire off all the + * units at once. it would be simpler if we just fired one unit at a time, + * but there is a big performance gain through doing it this way. */ + + /* calculate how many URBs we need */ + for (i = 0; i < num_packets; i++) { + int space_remaining = MAX_ISO_BUFFER_LENGTH - this_urb_len; + packet_len = transfer->iso_packet_desc[i].length; + + if (packet_len > space_remaining) { + num_urbs++; + this_urb_len = packet_len; + } else { + this_urb_len += packet_len; + } + } + usbi_dbg("need %d 32k URBs for transfer", num_urbs); + + alloc_size = num_urbs * sizeof(*urbs); + urbs = malloc(alloc_size); + if (!urbs) + return LIBUSB_ERROR_NO_MEM; + memset(urbs, 0, alloc_size); + + tpriv->iso_urbs = urbs; + tpriv->num_urbs = num_urbs; + tpriv->num_retired = 0; + tpriv->reap_action = NORMAL; + tpriv->iso_packet_offset = 0; + + /* allocate + initialize each URB with the correct number of packets */ + for (i = 0; i < num_urbs; i++) { + struct usbfs_urb *urb; + int space_remaining_in_urb = MAX_ISO_BUFFER_LENGTH; + int urb_packet_offset = 0; + unsigned char *urb_buffer_orig = urb_buffer; + int j; + int k; + + /* swallow up all the packets we can fit into this URB */ + while (packet_offset < transfer->num_iso_packets) { + packet_len = transfer->iso_packet_desc[packet_offset].length; + if (packet_len <= space_remaining_in_urb) { + /* throw it in */ + urb_packet_offset++; + packet_offset++; + space_remaining_in_urb -= packet_len; + urb_buffer += packet_len; + } else { + /* it can't fit, save it for the next URB */ + break; + } + } + + alloc_size = sizeof(*urb) + + (urb_packet_offset * sizeof(struct usbfs_iso_packet_desc)); + urb = malloc(alloc_size); + if (!urb) { + free_iso_urbs(tpriv); + return LIBUSB_ERROR_NO_MEM; + } + memset(urb, 0, alloc_size); + urbs[i] = urb; + + /* populate packet lengths */ + for (j = 0, k = packet_offset - urb_packet_offset; + k < packet_offset; k++, j++) { + packet_len = transfer->iso_packet_desc[k].length; + urb->iso_frame_desc[j].length = packet_len; + } + + urb->usercontext = itransfer; + urb->type = USBFS_URB_TYPE_ISO; + /* FIXME: interface for non-ASAP data? */ + urb->flags = USBFS_URB_ISO_ASAP; + urb->endpoint = transfer->endpoint; + urb->number_of_packets = urb_packet_offset; + urb->buffer = urb_buffer_orig; + } + + /* submit URBs */ + for (i = 0; i < num_urbs; i++) { + int r = ioctl(dpriv->fd, IOCTL_USBFS_SUBMITURB, urbs[i]); + if (r < 0) { + if (errno == ENODEV) { + r = LIBUSB_ERROR_NO_DEVICE; + } else { + usbi_err(TRANSFER_CTX(transfer), + "submiturb failed error %d errno=%d", r, errno); + r = LIBUSB_ERROR_IO; + } + + /* if the first URB submission fails, we can simply free up and + * return failure immediately. */ + if (i == 0) { + usbi_dbg("first URB failed, easy peasy"); + free_iso_urbs(tpriv); + return r; + } + + /* if it's not the first URB that failed, the situation is a bit + * tricky. we must discard all previous URBs. there are + * complications: + * - discarding is asynchronous - discarded urbs will be reaped + * later. the user must not have freed the transfer when the + * discarded URBs are reaped, otherwise libusb will be using + * freed memory. + * - the earlier URBs may have completed successfully and we do + * not want to throw away any data. + * so, in this case we discard all the previous URBs BUT we report + * that the transfer was submitted successfully. then later when + * the final discard completes we can report error to the user. + */ + tpriv->reap_action = SUBMIT_FAILED; + + /* The URBs we haven't submitted yet we count as already + * retired. */ + tpriv->num_retired = num_urbs - i; + discard_urbs(itransfer, 0, i); + + usbi_dbg("reporting successful submission but waiting for %d " + "discards before reporting error", i); + return 0; + } + } + + return 0; +} + +static int submit_control_transfer(struct usbi_transfer *itransfer) +{ + struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); + struct libusb_transfer *transfer = + USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct linux_device_handle_priv *dpriv = + _device_handle_priv(transfer->dev_handle); + struct usbfs_urb *urb; + int r; + + if (tpriv->urbs) + return LIBUSB_ERROR_BUSY; + + if (transfer->length - LIBUSB_CONTROL_SETUP_SIZE > MAX_CTRL_BUFFER_LENGTH) + return LIBUSB_ERROR_INVALID_PARAM; + + urb = malloc(sizeof(struct usbfs_urb)); + if (!urb) + return LIBUSB_ERROR_NO_MEM; + memset(urb, 0, sizeof(struct usbfs_urb)); + tpriv->urbs = urb; + tpriv->num_urbs = 1; + tpriv->reap_action = NORMAL; + + urb->usercontext = itransfer; + urb->type = USBFS_URB_TYPE_CONTROL; + urb->endpoint = transfer->endpoint; + urb->buffer = transfer->buffer; + urb->buffer_length = transfer->length; + + r = ioctl(dpriv->fd, IOCTL_USBFS_SUBMITURB, urb); + if (r < 0) { + free(urb); + tpriv->urbs = NULL; + if (errno == ENODEV) + return LIBUSB_ERROR_NO_DEVICE; + + usbi_err(TRANSFER_CTX(transfer), + "submiturb failed error %d errno=%d", r, errno); + return LIBUSB_ERROR_IO; + } + return 0; +} + +static int op_submit_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = + USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + + switch (transfer->type) { + case LIBUSB_TRANSFER_TYPE_CONTROL: + return submit_control_transfer(itransfer); + case LIBUSB_TRANSFER_TYPE_BULK: + return submit_bulk_transfer(itransfer, USBFS_URB_TYPE_BULK); + case LIBUSB_TRANSFER_TYPE_INTERRUPT: + return submit_bulk_transfer(itransfer, USBFS_URB_TYPE_INTERRUPT); + case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: + return submit_iso_transfer(itransfer); + default: + usbi_err(TRANSFER_CTX(transfer), + "unknown endpoint type %d", transfer->type); + return LIBUSB_ERROR_INVALID_PARAM; + } +} + +static int op_cancel_transfer(struct usbi_transfer *itransfer) +{ + struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); + struct libusb_transfer *transfer = + USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + + switch (transfer->type) { + case LIBUSB_TRANSFER_TYPE_BULK: + if (tpriv->reap_action == ERROR) + break; + /* else, fall through */ + case LIBUSB_TRANSFER_TYPE_CONTROL: + case LIBUSB_TRANSFER_TYPE_INTERRUPT: + case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: + tpriv->reap_action = CANCELLED; + break; + default: + usbi_err(TRANSFER_CTX(transfer), + "unknown endpoint type %d", transfer->type); + return LIBUSB_ERROR_INVALID_PARAM; + } + + if (!tpriv->urbs) + return LIBUSB_ERROR_NOT_FOUND; + + return discard_urbs(itransfer, 0, tpriv->num_urbs); +} + +static void op_clear_transfer_priv(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = + USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); + + /* urbs can be freed also in submit_transfer so lock mutex first */ + switch (transfer->type) { + case LIBUSB_TRANSFER_TYPE_CONTROL: + case LIBUSB_TRANSFER_TYPE_BULK: + case LIBUSB_TRANSFER_TYPE_INTERRUPT: + usbi_mutex_lock(&itransfer->lock); + if (tpriv->urbs) + free(tpriv->urbs); + tpriv->urbs = NULL; + usbi_mutex_unlock(&itransfer->lock); + break; + case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: + usbi_mutex_lock(&itransfer->lock); + if (tpriv->iso_urbs) + free_iso_urbs(tpriv); + usbi_mutex_unlock(&itransfer->lock); + break; + default: + usbi_err(TRANSFER_CTX(transfer), + "unknown endpoint type %d", transfer->type); + } +} + +static int handle_bulk_completion(struct usbi_transfer *itransfer, + struct usbfs_urb *urb) +{ + struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + int urb_idx = urb - tpriv->urbs; + + usbi_mutex_lock(&itransfer->lock); + usbi_dbg("handling completion status %d of bulk urb %d/%d", urb->status, + urb_idx + 1, tpriv->num_urbs); + + tpriv->num_retired++; + + if (tpriv->reap_action != NORMAL) { + /* cancelled, submit_fail, or completed early */ + usbi_dbg("abnormal reap: urb status %d", urb->status); + + /* even though we're in the process of cancelling, it's possible that + * we may receive some data in these URBs that we don't want to lose. + * examples: + * 1. while the kernel is cancelling all the packets that make up an + * URB, a few of them might complete. so we get back a successful + * cancellation *and* some data. + * 2. we receive a short URB which marks the early completion condition, + * so we start cancelling the remaining URBs. however, we're too + * slow and another URB completes (or at least completes partially). + * (this can't happen since we always use BULK_CONTINUATION.) + * + * When this happens, our objectives are not to lose any "surplus" data, + * and also to stick it at the end of the previously-received data + * (closing any holes), so that libusb reports the total amount of + * transferred data and presents it in a contiguous chunk. + */ + if (urb->actual_length > 0) { + unsigned char *target = transfer->buffer + itransfer->transferred; + usbi_dbg("received %d bytes of surplus data", urb->actual_length); + if (urb->buffer != target) { + usbi_dbg("moving surplus data from offset %d to offset %d", + (unsigned char *) urb->buffer - transfer->buffer, + target - transfer->buffer); + memmove(target, urb->buffer, urb->actual_length); + } + itransfer->transferred += urb->actual_length; + } + + if (tpriv->num_retired == tpriv->num_urbs) { + usbi_dbg("abnormal reap: last URB handled, reporting"); + if (tpriv->reap_action != COMPLETED_EARLY && + tpriv->reap_status == LIBUSB_TRANSFER_COMPLETED) + tpriv->reap_status = LIBUSB_TRANSFER_ERROR; + goto completed; + } + goto out_unlock; + } + + itransfer->transferred += urb->actual_length; + + /* Many of these errors can occur on *any* urb of a multi-urb + * transfer. When they do, we tear down the rest of the transfer. + */ + switch (urb->status) { + case 0: + break; + case -EREMOTEIO: /* short transfer */ + break; + case -ENOENT: /* cancelled */ + case -ECONNRESET: + break; + case -ENODEV: + case -ESHUTDOWN: + usbi_dbg("device removed"); + tpriv->reap_status = LIBUSB_TRANSFER_NO_DEVICE; + goto cancel_remaining; + case -EPIPE: + usbi_dbg("detected endpoint stall"); + if (tpriv->reap_status == LIBUSB_TRANSFER_COMPLETED) + tpriv->reap_status = LIBUSB_TRANSFER_STALL; + goto cancel_remaining; + case -EOVERFLOW: + /* overflow can only ever occur in the last urb */ + usbi_dbg("overflow, actual_length=%d", urb->actual_length); + if (tpriv->reap_status == LIBUSB_TRANSFER_COMPLETED) + tpriv->reap_status = LIBUSB_TRANSFER_OVERFLOW; + goto completed; + case -ETIME: + case -EPROTO: + case -EILSEQ: + case -ECOMM: + case -ENOSR: + usbi_dbg("low level error %d", urb->status); + tpriv->reap_action = ERROR; + goto cancel_remaining; + default: + usbi_warn(ITRANSFER_CTX(itransfer), + "unrecognised urb status %d", urb->status); + tpriv->reap_action = ERROR; + goto cancel_remaining; + } + + /* if we're the last urb or we got less data than requested then we're + * done */ + if (urb_idx == tpriv->num_urbs - 1) { + usbi_dbg("last URB in transfer --> complete!"); + goto completed; + } else if (urb->actual_length < urb->buffer_length) { + usbi_dbg("short transfer %d/%d --> complete!", + urb->actual_length, urb->buffer_length); + if (tpriv->reap_action == NORMAL) + tpriv->reap_action = COMPLETED_EARLY; + } else + goto out_unlock; + +cancel_remaining: + if (ERROR == tpriv->reap_action && LIBUSB_TRANSFER_COMPLETED == tpriv->reap_status) + tpriv->reap_status = LIBUSB_TRANSFER_ERROR; + + if (tpriv->num_retired == tpriv->num_urbs) /* nothing to cancel */ + goto completed; + + /* cancel remaining urbs and wait for their completion before + * reporting results */ + discard_urbs(itransfer, urb_idx + 1, tpriv->num_urbs); + +out_unlock: + usbi_mutex_unlock(&itransfer->lock); + return 0; + +completed: + free(tpriv->urbs); + tpriv->urbs = NULL; + usbi_mutex_unlock(&itransfer->lock); + return CANCELLED == tpriv->reap_action ? + usbi_handle_transfer_cancellation(itransfer) : + usbi_handle_transfer_completion(itransfer, tpriv->reap_status); +} + +static int handle_iso_completion(struct usbi_transfer *itransfer, + struct usbfs_urb *urb) +{ + struct libusb_transfer *transfer = + USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); + int num_urbs = tpriv->num_urbs; + int urb_idx = 0; + int i; + enum libusb_transfer_status status = LIBUSB_TRANSFER_COMPLETED; + + usbi_mutex_lock(&itransfer->lock); + for (i = 0; i < num_urbs; i++) { + if (urb == tpriv->iso_urbs[i]) { + urb_idx = i + 1; + break; + } + } + if (urb_idx == 0) { + usbi_err(TRANSFER_CTX(transfer), "could not locate urb!"); + usbi_mutex_unlock(&itransfer->lock); + return LIBUSB_ERROR_NOT_FOUND; + } + + usbi_dbg("handling completion status %d of iso urb %d/%d", urb->status, + urb_idx, num_urbs); + + /* copy isochronous results back in */ + + for (i = 0; i < urb->number_of_packets; i++) { + struct usbfs_iso_packet_desc *urb_desc = &urb->iso_frame_desc[i]; + struct libusb_iso_packet_descriptor *lib_desc = + &transfer->iso_packet_desc[tpriv->iso_packet_offset++]; + lib_desc->status = LIBUSB_TRANSFER_COMPLETED; + switch (urb_desc->status) { + case 0: + break; + case -ENOENT: /* cancelled */ + case -ECONNRESET: + break; + case -ENODEV: + case -ESHUTDOWN: + usbi_dbg("device removed"); + lib_desc->status = LIBUSB_TRANSFER_NO_DEVICE; + break; + case -EPIPE: + usbi_dbg("detected endpoint stall"); + lib_desc->status = LIBUSB_TRANSFER_STALL; + break; + case -EOVERFLOW: + usbi_dbg("overflow error"); + lib_desc->status = LIBUSB_TRANSFER_OVERFLOW; + break; + case -ETIME: + case -EPROTO: + case -EILSEQ: + case -ECOMM: + case -ENOSR: + case -EXDEV: + usbi_dbg("low-level USB error %d", urb_desc->status); + lib_desc->status = LIBUSB_TRANSFER_ERROR; + break; + default: + usbi_warn(TRANSFER_CTX(transfer), + "unrecognised urb status %d", urb_desc->status); + lib_desc->status = LIBUSB_TRANSFER_ERROR; + break; + } + lib_desc->actual_length = urb_desc->actual_length; + } + + tpriv->num_retired++; + + if (tpriv->reap_action != NORMAL) { /* cancelled or submit_fail */ + usbi_dbg("CANCEL: urb status %d", urb->status); + + if (tpriv->num_retired == num_urbs) { + usbi_dbg("CANCEL: last URB handled, reporting"); + free_iso_urbs(tpriv); + if (tpriv->reap_action == CANCELLED) { + usbi_mutex_unlock(&itransfer->lock); + return usbi_handle_transfer_cancellation(itransfer); + } else { + usbi_mutex_unlock(&itransfer->lock); + return usbi_handle_transfer_completion(itransfer, + LIBUSB_TRANSFER_ERROR); + } + } + goto out; + } + + switch (urb->status) { + case 0: + break; + case -ENOENT: /* cancelled */ + case -ECONNRESET: + break; + case -ESHUTDOWN: + usbi_dbg("device removed"); + status = LIBUSB_TRANSFER_NO_DEVICE; + break; + default: + usbi_warn(TRANSFER_CTX(transfer), + "unrecognised urb status %d", urb->status); + status = LIBUSB_TRANSFER_ERROR; + break; + } + + /* if we're the last urb then we're done */ + if (urb_idx == num_urbs) { + usbi_dbg("last URB in transfer --> complete!"); + free_iso_urbs(tpriv); + usbi_mutex_unlock(&itransfer->lock); + return usbi_handle_transfer_completion(itransfer, status); + } + +out: + usbi_mutex_unlock(&itransfer->lock); + return 0; +} + +static int handle_control_completion(struct usbi_transfer *itransfer, + struct usbfs_urb *urb) +{ + struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); + int status; + + usbi_mutex_lock(&itransfer->lock); + usbi_dbg("handling completion status %d", urb->status); + + itransfer->transferred += urb->actual_length; + + if (tpriv->reap_action == CANCELLED) { + if (urb->status != 0 && urb->status != -ENOENT) + usbi_warn(ITRANSFER_CTX(itransfer), + "cancel: unrecognised urb status %d", urb->status); + free(tpriv->urbs); + tpriv->urbs = NULL; + usbi_mutex_unlock(&itransfer->lock); + return usbi_handle_transfer_cancellation(itransfer); + } + + switch (urb->status) { + case 0: + status = LIBUSB_TRANSFER_COMPLETED; + break; + case -ENOENT: /* cancelled */ + status = LIBUSB_TRANSFER_CANCELLED; + break; + case -ENODEV: + case -ESHUTDOWN: + usbi_dbg("device removed"); + status = LIBUSB_TRANSFER_NO_DEVICE; + break; + case -EPIPE: + usbi_dbg("unsupported control request"); + status = LIBUSB_TRANSFER_STALL; + break; + case -EOVERFLOW: + usbi_dbg("control overflow error"); + status = LIBUSB_TRANSFER_OVERFLOW; + break; + case -ETIME: + case -EPROTO: + case -EILSEQ: + case -ECOMM: + case -ENOSR: + usbi_dbg("low-level bus error occurred"); + status = LIBUSB_TRANSFER_ERROR; + break; + default: + usbi_warn(ITRANSFER_CTX(itransfer), + "unrecognised urb status %d", urb->status); + status = LIBUSB_TRANSFER_ERROR; + break; + } + + free(tpriv->urbs); + tpriv->urbs = NULL; + usbi_mutex_unlock(&itransfer->lock); + return usbi_handle_transfer_completion(itransfer, status); +} + +static int reap_for_handle(struct libusb_device_handle *handle) +{ + struct linux_device_handle_priv *hpriv = _device_handle_priv(handle); + int r; + struct usbfs_urb *urb; + struct usbi_transfer *itransfer; + struct libusb_transfer *transfer; + + r = ioctl(hpriv->fd, IOCTL_USBFS_REAPURBNDELAY, &urb); + if (r == -1 && errno == EAGAIN) + return 1; + if (r < 0) { + if (errno == ENODEV) + return LIBUSB_ERROR_NO_DEVICE; + + usbi_err(HANDLE_CTX(handle), "reap failed error %d errno=%d", + r, errno); + return LIBUSB_ERROR_IO; + } + + itransfer = urb->usercontext; + transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + + usbi_dbg("urb type=%d status=%d transferred=%d", urb->type, urb->status, + urb->actual_length); + + switch (transfer->type) { + case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: + return handle_iso_completion(itransfer, urb); + case LIBUSB_TRANSFER_TYPE_BULK: + case LIBUSB_TRANSFER_TYPE_INTERRUPT: + return handle_bulk_completion(itransfer, urb); + case LIBUSB_TRANSFER_TYPE_CONTROL: + return handle_control_completion(itransfer, urb); + default: + usbi_err(HANDLE_CTX(handle), "unrecognised endpoint type %x", + transfer->type); + return LIBUSB_ERROR_OTHER; + } +} + +static int op_handle_events(struct libusb_context *ctx, + struct pollfd *fds, POLL_NFDS_TYPE nfds, int num_ready) +{ + int r; + int i = 0; + + usbi_mutex_lock(&ctx->open_devs_lock); + for (i = 0; i < nfds && num_ready > 0; i++) { + struct pollfd *pollfd = &fds[i]; + struct libusb_device_handle *handle; + struct linux_device_handle_priv *hpriv = NULL; + + if (!pollfd->revents) + continue; + + num_ready--; + list_for_each_entry(handle, &ctx->open_devs, list, struct libusb_device_handle) { + hpriv = _device_handle_priv(handle); + if (hpriv->fd == pollfd->fd) + break; + } + + if (pollfd->revents & POLLERR) { + usbi_remove_pollfd(HANDLE_CTX(handle), hpriv->fd); + usbi_handle_disconnect(handle); + continue; + } + + r = reap_for_handle(handle); + if (r == 1 || r == LIBUSB_ERROR_NO_DEVICE) + continue; + else if (r < 0) + goto out; + } + + r = 0; +out: + usbi_mutex_unlock(&ctx->open_devs_lock); + return r; +} + +static int op_clock_gettime(int clk_id, struct timespec *tp) +{ + switch (clk_id) { + case USBI_CLOCK_MONOTONIC: + return clock_gettime(monotonic_clkid, tp); + case USBI_CLOCK_REALTIME: + return clock_gettime(CLOCK_REALTIME, tp); + default: + return LIBUSB_ERROR_INVALID_PARAM; + } +} + +#ifdef USBI_TIMERFD_AVAILABLE +static clockid_t op_get_timerfd_clockid(void) +{ + return monotonic_clkid; + +} +#endif + +const struct usbi_os_backend linux_usbfs_backend = { + .name = "Linux usbfs", + .init = op_init, + .exit = NULL, + .get_device_list = op_get_device_list, + .get_device_descriptor = op_get_device_descriptor, + .get_active_config_descriptor = op_get_active_config_descriptor, + .get_config_descriptor = op_get_config_descriptor, + + .open = op_open, + .close = op_close, + .get_configuration = op_get_configuration, + .set_configuration = op_set_configuration, + .claim_interface = op_claim_interface, + .release_interface = op_release_interface, + + .set_interface_altsetting = op_set_interface, + .clear_halt = op_clear_halt, + .reset_device = op_reset_device, + + .kernel_driver_active = op_kernel_driver_active, + .detach_kernel_driver = op_detach_kernel_driver, + .attach_kernel_driver = op_attach_kernel_driver, + + .destroy_device = op_destroy_device, + + .submit_transfer = op_submit_transfer, + .cancel_transfer = op_cancel_transfer, + .clear_transfer_priv = op_clear_transfer_priv, + + .handle_events = op_handle_events, + + .clock_gettime = op_clock_gettime, + +#ifdef USBI_TIMERFD_AVAILABLE + .get_timerfd_clockid = op_get_timerfd_clockid, +#endif + + .device_priv_size = sizeof(struct linux_device_priv), + .device_handle_priv_size = sizeof(struct linux_device_handle_priv), + .transfer_priv_size = sizeof(struct linux_transfer_priv), + .add_iso_packet_size = 0, +}; + diff --git a/libusb/os/linux_usbfs.h b/libusb/os/linux_usbfs.h new file mode 100644 index 0000000..487acb5 --- /dev/null +++ b/libusb/os/linux_usbfs.h @@ -0,0 +1,139 @@ +/* + * usbfs header structures + * Copyright (C) 2007 Daniel Drake <dsd@gentoo.org> + * Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef LIBUSB_USBFS_H +#define LIBUSB_USBFS_H + +#define SYSFS_DEVICE_PATH "/sys/bus/usb/devices" + +struct usbfs_ctrltransfer { + /* keep in sync with usbdevice_fs.h:usbdevfs_ctrltransfer */ + uint8_t bmRequestType; + uint8_t bRequest; + uint16_t wValue; + uint16_t wIndex; + uint16_t wLength; + + uint32_t timeout; /* in milliseconds */ + + /* pointer to data */ + void *data; +}; + +struct usbfs_bulktransfer { + /* keep in sync with usbdevice_fs.h:usbdevfs_bulktransfer */ + unsigned int ep; + unsigned int len; + unsigned int timeout; /* in milliseconds */ + + /* pointer to data */ + void *data; +}; + +struct usbfs_setinterface { + /* keep in sync with usbdevice_fs.h:usbdevfs_setinterface */ + unsigned int interface; + unsigned int altsetting; +}; + +#define USBFS_MAXDRIVERNAME 255 + +struct usbfs_getdriver { + unsigned int interface; + char driver[USBFS_MAXDRIVERNAME + 1]; +}; + +#define USBFS_URB_SHORT_NOT_OK 0x01 +#define USBFS_URB_ISO_ASAP 0x02 +#define USBFS_URB_BULK_CONTINUATION 0x04 +#define USBFS_URB_QUEUE_BULK 0x10 +#define USBFS_URB_ZERO_PACKET 0x40 + +enum usbfs_urb_type { + USBFS_URB_TYPE_ISO = 0, + USBFS_URB_TYPE_INTERRUPT = 1, + USBFS_URB_TYPE_CONTROL = 2, + USBFS_URB_TYPE_BULK = 3, +}; + +struct usbfs_iso_packet_desc { + unsigned int length; + unsigned int actual_length; + unsigned int status; +}; + +#define MAX_ISO_BUFFER_LENGTH 32768 +#define MAX_BULK_BUFFER_LENGTH 16384 +#define MAX_CTRL_BUFFER_LENGTH 4096 + +struct usbfs_urb { + unsigned char type; + unsigned char endpoint; + int status; + unsigned int flags; + void *buffer; + int buffer_length; + int actual_length; + int start_frame; + int number_of_packets; + int error_count; + unsigned int signr; + void *usercontext; + struct usbfs_iso_packet_desc iso_frame_desc[0]; +}; + +struct usbfs_connectinfo { + unsigned int devnum; + unsigned char slow; +}; + +struct usbfs_ioctl { + int ifno; /* interface 0..N ; negative numbers reserved */ + int ioctl_code; /* MUST encode size + direction of data so the + * macros in <asm/ioctl.h> give correct values */ + void *data; /* param buffer (in, or out) */ +}; + +struct usbfs_hub_portinfo { + unsigned char numports; + unsigned char port[127]; /* port to device num mapping */ +}; + +#define IOCTL_USBFS_CONTROL _IOWR('U', 0, struct usbfs_ctrltransfer) +#define IOCTL_USBFS_BULK _IOWR('U', 2, struct usbfs_bulktransfer) +#define IOCTL_USBFS_RESETEP _IOR('U', 3, unsigned int) +#define IOCTL_USBFS_SETINTF _IOR('U', 4, struct usbfs_setinterface) +#define IOCTL_USBFS_SETCONFIG _IOR('U', 5, unsigned int) +#define IOCTL_USBFS_GETDRIVER _IOW('U', 8, struct usbfs_getdriver) +#define IOCTL_USBFS_SUBMITURB _IOR('U', 10, struct usbfs_urb) +#define IOCTL_USBFS_DISCARDURB _IO('U', 11) +#define IOCTL_USBFS_REAPURB _IOW('U', 12, void *) +#define IOCTL_USBFS_REAPURBNDELAY _IOW('U', 13, void *) +#define IOCTL_USBFS_CLAIMINTF _IOR('U', 15, unsigned int) +#define IOCTL_USBFS_RELEASEINTF _IOR('U', 16, unsigned int) +#define IOCTL_USBFS_CONNECTINFO _IOW('U', 17, struct usbfs_connectinfo) +#define IOCTL_USBFS_IOCTL _IOWR('U', 18, struct usbfs_ioctl) +#define IOCTL_USBFS_HUB_PORTINFO _IOR('U', 19, struct usbfs_hub_portinfo) +#define IOCTL_USBFS_RESET _IO('U', 20) +#define IOCTL_USBFS_CLEAR_HALT _IOR('U', 21, unsigned int) +#define IOCTL_USBFS_DISCONNECT _IO('U', 22) +#define IOCTL_USBFS_CONNECT _IO('U', 23) + +#endif diff --git a/libusb/os/openbsd_usb.c b/libusb/os/openbsd_usb.c new file mode 100644 index 0000000..e31941b --- /dev/null +++ b/libusb/os/openbsd_usb.c @@ -0,0 +1,727 @@ +/* + * Copyright (c) 2011 Martin Pieuchot <mpi@openbsd.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <sys/time.h> +#include <sys/types.h> + +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include <dev/usb/usb.h> + +#include "libusb.h" +#include "libusbi.h" + +struct device_priv { + char devnode[16]; + int fd; + + unsigned char *cdesc; /* active config descriptor */ + usb_device_descriptor_t ddesc; /* usb device descriptor */ +}; + +struct handle_priv { + int pipe[2]; /* for event notification */ + int endpoints[USB_MAX_ENDPOINTS]; +}; + +/* + * Backend functions + */ +static int obsd_get_device_list(struct libusb_context *, + struct discovered_devs **); +static int obsd_open(struct libusb_device_handle *); +static void obsd_close(struct libusb_device_handle *); + +static int obsd_get_device_descriptor(struct libusb_device *, unsigned char *, + int *); +static int obsd_get_active_config_descriptor(struct libusb_device *, + unsigned char *, size_t, int *); +static int obsd_get_config_descriptor(struct libusb_device *, uint8_t, + unsigned char *, size_t, int *); + +static int obsd_get_configuration(struct libusb_device_handle *, int *); +static int obsd_set_configuration(struct libusb_device_handle *, int); + +static int obsd_claim_interface(struct libusb_device_handle *, int); +static int obsd_release_interface(struct libusb_device_handle *, int); + +static int obsd_set_interface_altsetting(struct libusb_device_handle *, int, + int); +static int obsd_clear_halt(struct libusb_device_handle *, unsigned char); +static int obsd_reset_device(struct libusb_device_handle *); +static void obsd_destroy_device(struct libusb_device *); + +static int obsd_submit_transfer(struct usbi_transfer *); +static int obsd_cancel_transfer(struct usbi_transfer *); +static void obsd_clear_transfer_priv(struct usbi_transfer *); +static int obsd_handle_events(struct libusb_context *ctx, struct pollfd *, + nfds_t, int); +static int obsd_clock_gettime(int, struct timespec *); + +/* + * Private functions + */ +static int _errno_to_libusb(int); +static int _cache_active_config_descriptor(struct libusb_device *, int); +static int _sync_control_transfer(struct usbi_transfer *); +static int _sync_gen_transfer(struct usbi_transfer *); +static int _access_endpoint(struct libusb_transfer *); + +const struct usbi_os_backend openbsd_backend = { + "Synchronous OpenBSD backend", + NULL, /* init() */ + NULL, /* exit() */ + obsd_get_device_list, + obsd_open, + obsd_close, + + obsd_get_device_descriptor, + obsd_get_active_config_descriptor, + obsd_get_config_descriptor, + + obsd_get_configuration, + obsd_set_configuration, + + obsd_claim_interface, + obsd_release_interface, + + obsd_set_interface_altsetting, + obsd_clear_halt, + obsd_reset_device, + + NULL, /* kernel_driver_active() */ + NULL, /* detach_kernel_driver() */ + NULL, /* attach_kernel_driver() */ + + obsd_destroy_device, + + obsd_submit_transfer, + obsd_cancel_transfer, + obsd_clear_transfer_priv, + + obsd_handle_events, + + obsd_clock_gettime, + sizeof(struct device_priv), + sizeof(struct handle_priv), + 0, /* transfer_priv_size */ + 0, /* add_iso_packet_size */ +}; + +int +obsd_get_device_list(struct libusb_context * ctx, + struct discovered_devs **discdevs) +{ + struct libusb_device *dev; + struct device_priv *dpriv; + struct usb_device_info di; + unsigned long session_id; + char devnode[16]; + int fd, err, i; + + usbi_dbg(""); + + /* Only ugen(4) is supported */ + for (i = 0; i < USB_MAX_DEVICES; i++) { + /* Control endpoint is always .00 */ + snprintf(devnode, sizeof(devnode), "/dev/ugen%d.00", i); + + if ((fd = open(devnode, O_RDONLY)) < 0) { + if (errno != ENOENT && errno != ENXIO) + usbi_err(ctx, "could not open %s", devnode); + continue; + } + + if (ioctl(fd, USB_GET_DEVICEINFO, &di) < 0) + continue; + + session_id = (di.udi_bus << 8 | di.udi_addr); + dev = usbi_get_device_by_session_id(ctx, session_id); + + if (dev == NULL) { + dev = usbi_alloc_device(ctx, session_id); + if (dev == NULL) + return (LIBUSB_ERROR_NO_MEM); + + dev->bus_number = di.udi_bus; + dev->device_address = di.udi_addr; + dev->speed = di.udi_speed; + + dpriv = (struct device_priv *)dev->os_priv; + strlcpy(dpriv->devnode, devnode, sizeof(devnode)); + dpriv->fd = -1; + + if (ioctl(fd, USB_GET_DEVICE_DESC, &dpriv->ddesc) < 0) { + err = errno; + goto error; + } + + dpriv->cdesc = NULL; + if (_cache_active_config_descriptor(dev, fd)) { + err = errno; + goto error; + } + + if ((err = usbi_sanitize_device(dev))) + goto error; + } + close(fd); + + if (discovered_devs_append(*discdevs, dev) == NULL) + return (LIBUSB_ERROR_NO_MEM); + } + + return (LIBUSB_SUCCESS); + +error: + close(fd); + libusb_unref_device(dev); + return _errno_to_libusb(err); +} + +int +obsd_open(struct libusb_device_handle *handle) +{ + struct handle_priv *hpriv = (struct handle_priv *)handle->os_priv; + struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; + + dpriv->fd = open(dpriv->devnode, O_RDWR); + if (dpriv->fd < 0) { + dpriv->fd = open(dpriv->devnode, O_RDONLY); + if (dpriv->fd < 0) + return _errno_to_libusb(errno); + } + + usbi_dbg("open %s: fd %d", dpriv->devnode, dpriv->fd); + + if (pipe(hpriv->pipe) < 0) + return _errno_to_libusb(errno); + + return usbi_add_pollfd(HANDLE_CTX(handle), hpriv->pipe[0], POLLIN); +} + +void +obsd_close(struct libusb_device_handle *handle) +{ + struct handle_priv *hpriv = (struct handle_priv *)handle->os_priv; + struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; + + usbi_dbg("close: fd %d", dpriv->fd); + + close(dpriv->fd); + dpriv->fd = -1; + + usbi_remove_pollfd(HANDLE_CTX(handle), hpriv->pipe[0]); + + close(hpriv->pipe[0]); + close(hpriv->pipe[1]); +} + +int +obsd_get_device_descriptor(struct libusb_device *dev, unsigned char *buf, + int *host_endian) +{ + struct device_priv *dpriv = (struct device_priv *)dev->os_priv; + + usbi_dbg(""); + + memcpy(buf, &dpriv->ddesc, DEVICE_DESC_LENGTH); + + *host_endian = 0; + + return (LIBUSB_SUCCESS); +} + +int +obsd_get_active_config_descriptor(struct libusb_device *dev, + unsigned char *buf, size_t len, int *host_endian) +{ + struct device_priv *dpriv = (struct device_priv *)dev->os_priv; + usb_config_descriptor_t *ucd; + + ucd = (usb_config_descriptor_t *) dpriv->cdesc; + len = MIN(len, UGETW(ucd->wTotalLength)); + + usbi_dbg("len %d", len); + + memcpy(buf, dpriv->cdesc, len); + + *host_endian = 0; + + return (LIBUSB_SUCCESS); +} + +int +obsd_get_config_descriptor(struct libusb_device *dev, uint8_t idx, + unsigned char *buf, size_t len, int *host_endian) +{ + struct device_priv *dpriv = (struct device_priv *)dev->os_priv; + struct usb_full_desc ufd; + int fd, err; + + usbi_dbg("index %d, len %d", idx, len); + + /* A config descriptor may be requested before opening the device */ + if (dpriv->fd >= 0) { + fd = dpriv->fd; + } else { + fd = open(dpriv->devnode, O_RDONLY); + if (fd < 0) + return _errno_to_libusb(errno); + } + + ufd.ufd_config_index = idx; + ufd.ufd_size = len; + ufd.ufd_data = buf; + + if ((ioctl(fd, USB_GET_FULL_DESC, &ufd)) < 0) { + err = errno; + if (dpriv->fd < 0) + close(fd); + return _errno_to_libusb(err); + } + + if (dpriv->fd < 0) + close(fd); + + *host_endian = 0; + + return (LIBUSB_SUCCESS); +} + +int +obsd_get_configuration(struct libusb_device_handle *handle, int *config) +{ + struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; + + usbi_dbg(""); + + if (ioctl(dpriv->fd, USB_GET_CONFIG, config) < 0) + return _errno_to_libusb(errno); + + usbi_dbg("configuration %d", *config); + + return (LIBUSB_SUCCESS); +} + +int +obsd_set_configuration(struct libusb_device_handle *handle, int config) +{ + struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; + + usbi_dbg("configuration %d", config); + + if (ioctl(dpriv->fd, USB_SET_CONFIG, &config) < 0) + return _errno_to_libusb(errno); + + return _cache_active_config_descriptor(handle->dev, dpriv->fd); +} + +int +obsd_claim_interface(struct libusb_device_handle *handle, int iface) +{ + struct handle_priv *hpriv = (struct handle_priv *)handle->os_priv; + int i; + + for (i = 0; i < USB_MAX_ENDPOINTS; i++) + hpriv->endpoints[i] = -1; + + return (LIBUSB_SUCCESS); +} + +int +obsd_release_interface(struct libusb_device_handle *handle, int iface) +{ + struct handle_priv *hpriv = (struct handle_priv *)handle->os_priv; + int i; + + for (i = 0; i < USB_MAX_ENDPOINTS; i++) + if (hpriv->endpoints[i] >= 0) + close(hpriv->endpoints[i]); + + return (LIBUSB_SUCCESS); +} + +int +obsd_set_interface_altsetting(struct libusb_device_handle *handle, int iface, + int altsetting) +{ + struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; + struct usb_alt_interface intf; + + usbi_dbg("iface %d, setting %d", iface, altsetting); + + memset(&intf, 0, sizeof(intf)); + + intf.uai_interface_index = iface; + intf.uai_alt_no = altsetting; + + if (ioctl(dpriv->fd, USB_SET_ALTINTERFACE, &intf) < 0) + return _errno_to_libusb(errno); + + return (LIBUSB_SUCCESS); +} + +int +obsd_clear_halt(struct libusb_device_handle *handle, unsigned char endpoint) +{ + struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; + struct usb_ctl_request req; + + usbi_dbg(""); + + req.ucr_request.bmRequestType = UT_WRITE_ENDPOINT; + req.ucr_request.bRequest = UR_CLEAR_FEATURE; + USETW(req.ucr_request.wValue, UF_ENDPOINT_HALT); + USETW(req.ucr_request.wIndex, endpoint); + USETW(req.ucr_request.wLength, 0); + + if (ioctl(dpriv->fd, USB_DO_REQUEST, &req) < 0) + return _errno_to_libusb(errno); + + return (LIBUSB_SUCCESS); +} + +int +obsd_reset_device(struct libusb_device_handle *handle) +{ + usbi_dbg(""); + + return (LIBUSB_ERROR_NOT_SUPPORTED); +} + +void +obsd_destroy_device(struct libusb_device *dev) +{ + struct device_priv *dpriv = (struct device_priv *)dev->os_priv; + + usbi_dbg(""); + + free(dpriv->cdesc); +} + +int +obsd_submit_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer; + struct handle_priv *hpriv; + int err = 0; + + usbi_dbg(""); + + transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + hpriv = (struct handle_priv *)transfer->dev_handle->os_priv; + + switch (transfer->type) { + case LIBUSB_TRANSFER_TYPE_CONTROL: + err = _sync_control_transfer(itransfer); + break; + case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: + if (IS_XFEROUT(transfer)) { + /* Isochronous write is not supported */ + err = LIBUSB_ERROR_NOT_SUPPORTED; + break; + } + err = _sync_gen_transfer(itransfer); + break; + case LIBUSB_TRANSFER_TYPE_BULK: + case LIBUSB_TRANSFER_TYPE_INTERRUPT: + if (IS_XFEROUT(transfer) && + transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) { + err = LIBUSB_ERROR_NOT_SUPPORTED; + break; + } + err = _sync_gen_transfer(itransfer); + break; + } + + if (err) + return (err); + + if (write(hpriv->pipe[1], &itransfer, sizeof(itransfer)) < 0) + return _errno_to_libusb(errno); + + return (LIBUSB_SUCCESS); +} + +int +obsd_cancel_transfer(struct usbi_transfer *itransfer) +{ + usbi_dbg(""); + + return (LIBUSB_ERROR_NOT_SUPPORTED); +} + +void +obsd_clear_transfer_priv(struct usbi_transfer *itransfer) +{ + usbi_dbg(""); + + /* Nothing to do */ +} + +int +obsd_handle_events(struct libusb_context *ctx, struct pollfd *fds, nfds_t nfds, + int num_ready) +{ + struct libusb_device_handle *handle; + struct handle_priv *hpriv = NULL; + struct usbi_transfer *itransfer; + struct pollfd *pollfd; + int i, err = 0; + + usbi_dbg(""); + + pthread_mutex_lock(&ctx->open_devs_lock); + for (i = 0; i < nfds && num_ready > 0; i++) { + pollfd = &fds[i]; + + if (!pollfd->revents) + continue; + + hpriv = NULL; + num_ready--; + list_for_each_entry(handle, &ctx->open_devs, list, + struct libusb_device_handle) { + hpriv = (struct handle_priv *)handle->os_priv; + + if (hpriv->pipe[0] == pollfd->fd) + break; + + hpriv = NULL; + } + + if (NULL == hpriv) { + usbi_dbg("fd %d is not an event pipe!", pollfd->fd); + err = ENOENT; + break; + } + + if (pollfd->revents & POLLERR) { + usbi_remove_pollfd(HANDLE_CTX(handle), hpriv->pipe[0]); + usbi_handle_disconnect(handle); + continue; + } + + if (read(hpriv->pipe[0], &itransfer, sizeof(itransfer)) < 0) { + err = errno; + break; + } + + if ((err = usbi_handle_transfer_completion(itransfer, + LIBUSB_TRANSFER_COMPLETED))) + break; + } + pthread_mutex_unlock(&ctx->open_devs_lock); + + if (err) + return _errno_to_libusb(err); + + return (LIBUSB_SUCCESS); +} + +int +obsd_clock_gettime(int clkid, struct timespec *tp) +{ + usbi_dbg("clock %d", clkid); + + if (clkid == USBI_CLOCK_REALTIME) + return clock_gettime(CLOCK_REALTIME, tp); + + if (clkid == USBI_CLOCK_MONOTONIC) + return clock_gettime(CLOCK_MONOTONIC, tp); + + return (LIBUSB_ERROR_INVALID_PARAM); +} + +int +_errno_to_libusb(int err) +{ + switch (err) { + case EIO: + return (LIBUSB_ERROR_IO); + case EACCES: + return (LIBUSB_ERROR_ACCESS); + case ENOENT: + return (LIBUSB_ERROR_NO_DEVICE); + case ENOMEM: + return (LIBUSB_ERROR_NO_MEM); + } + + usbi_dbg("error: %s", strerror(err)); + + return (LIBUSB_ERROR_OTHER); +} + +int +_cache_active_config_descriptor(struct libusb_device *dev, int fd) +{ + struct device_priv *dpriv = (struct device_priv *)dev->os_priv; + struct usb_config_desc ucd; + struct usb_full_desc ufd; + unsigned char* buf; + int len; + + usbi_dbg("fd %d", fd); + + ucd.ucd_config_index = USB_CURRENT_CONFIG_INDEX; + + if ((ioctl(fd, USB_GET_CONFIG_DESC, &ucd)) < 0) + return _errno_to_libusb(errno); + + usbi_dbg("active bLength %d", ucd.ucd_desc.bLength); + + len = UGETW(ucd.ucd_desc.wTotalLength); + buf = malloc(len); + if (buf == NULL) + return (LIBUSB_ERROR_NO_MEM); + + ufd.ufd_config_index = ucd.ucd_config_index; + ufd.ufd_size = len; + ufd.ufd_data = buf; + + usbi_dbg("index %d, len %d", ufd.ufd_config_index, len); + + if ((ioctl(fd, USB_GET_FULL_DESC, &ufd)) < 0) { + free(buf); + return _errno_to_libusb(errno); + } + + if (dpriv->cdesc) + free(dpriv->cdesc); + dpriv->cdesc = buf; + + return (0); +} + +int +_sync_control_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer; + struct libusb_control_setup *setup; + struct device_priv *dpriv; + struct usb_ctl_request req; + + transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + dpriv = (struct device_priv *)transfer->dev_handle->dev->os_priv; + setup = (struct libusb_control_setup *)transfer->buffer; + + usbi_dbg("type %d request %d value %d index %d length %d timeout %d", + setup->bmRequestType, setup->bRequest, + libusb_le16_to_cpu(setup->wValue), + libusb_le16_to_cpu(setup->wIndex), + libusb_le16_to_cpu(setup->wLength), transfer->timeout); + + req.ucr_request.bmRequestType = setup->bmRequestType; + req.ucr_request.bRequest = setup->bRequest; + /* Don't use USETW, libusb already deals with the endianness */ + (*(uint16_t *)req.ucr_request.wValue) = setup->wValue; + (*(uint16_t *)req.ucr_request.wIndex) = setup->wIndex; + (*(uint16_t *)req.ucr_request.wLength) = setup->wLength; + req.ucr_data = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE; + + if ((transfer->flags & LIBUSB_TRANSFER_SHORT_NOT_OK) == 0) + req.ucr_flags = USBD_SHORT_XFER_OK; + + if ((ioctl(dpriv->fd, USB_SET_TIMEOUT, &transfer->timeout)) < 0) + return _errno_to_libusb(errno); + + if ((ioctl(dpriv->fd, USB_DO_REQUEST, &req)) < 0) + return _errno_to_libusb(errno); + + itransfer->transferred = req.ucr_actlen; + + usbi_dbg("transferred %d", itransfer->transferred); + + return (0); +} + +int +_access_endpoint(struct libusb_transfer *transfer) +{ + struct handle_priv *hpriv; + struct device_priv *dpriv; + char *s, devnode[16]; + int fd, endpt; + mode_t mode; + + hpriv = (struct handle_priv *)transfer->dev_handle->os_priv; + dpriv = (struct device_priv *)transfer->dev_handle->dev->os_priv; + + endpt = UE_GET_ADDR(transfer->endpoint); + mode = IS_XFERIN(transfer) ? O_RDONLY : O_WRONLY; + + usbi_dbg("endpoint %d mode %d", endpt, mode); + + if (hpriv->endpoints[endpt] < 0) { + /* Pick the right node given the control one */ + strlcpy(devnode, dpriv->devnode, sizeof(devnode)); + s = strchr(devnode, '.'); + snprintf(s, 4, ".%02d", endpt); + + /* We may need to read/write to the same endpoint later. */ + if (((fd = open(devnode, O_RDWR)) < 0) && (errno == ENXIO)) + if ((fd = open(devnode, mode)) < 0) + return (-1); + + hpriv->endpoints[endpt] = fd; + } + + return (hpriv->endpoints[endpt]); +} + +int +_sync_gen_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer; + int fd, nr = 1; + + transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + + /* + * Bulk, Interrupt or Isochronous transfer depends on the + * endpoint and thus the node to open. + */ + if ((fd = _access_endpoint(transfer)) < 0) + return _errno_to_libusb(errno); + + if ((ioctl(fd, USB_SET_TIMEOUT, &transfer->timeout)) < 0) + return _errno_to_libusb(errno); + + if (IS_XFERIN(transfer)) { + if ((transfer->flags & LIBUSB_TRANSFER_SHORT_NOT_OK) == 0) + if ((ioctl(fd, USB_SET_SHORT_XFER, &nr)) < 0) + return _errno_to_libusb(errno); + + nr = read(fd, transfer->buffer, transfer->length); + } else { + nr = write(fd, transfer->buffer, transfer->length); + } + + if (nr < 0) + return _errno_to_libusb(errno); + + itransfer->transferred = nr; + + return (0); +} diff --git a/libusb/os/poll_posix.h b/libusb/os/poll_posix.h new file mode 100644 index 0000000..0e5e7f5 --- /dev/null +++ b/libusb/os/poll_posix.h @@ -0,0 +1,10 @@ +#ifndef LIBUSB_POLL_POSIX_H +#define LIBUSB_POLL_POSIX_H + +#define usbi_write write +#define usbi_read read +#define usbi_close close +#define usbi_pipe pipe +#define usbi_poll poll + +#endif /* LIBUSB_POLL_POSIX_H */ diff --git a/libusb/os/poll_windows.c b/libusb/os/poll_windows.c new file mode 100644 index 0000000..7f4d9c4 --- /dev/null +++ b/libusb/os/poll_windows.c @@ -0,0 +1,745 @@ +/* + * poll_windows: poll compatibility wrapper for Windows + * Copyright (C) 2009-2010 Pete Batard <pbatard@gmail.com> + * With contributions from Michael Plante, Orin Eman et al. + * Parts of poll implementation from libusb-win32, by Stephan Meyer et al. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +/* + * poll() and pipe() Windows compatibility layer for libusb 1.0 + * + * The way this layer works is by using OVERLAPPED with async I/O transfers, as + * OVERLAPPED have an associated event which is flagged for I/O completion. + * + * For USB pollable async I/O, you would typically: + * - obtain a Windows HANDLE to a file or device that has been opened in + * OVERLAPPED mode + * - call usbi_create_fd with this handle to obtain a custom fd. + * Note that if you need simultaneous R/W access, you need to call create_fd + * twice, once in _O_RDONLY and once in _O_WRONLY mode to obtain 2 separate + * pollable fds + * - leave the core functions call the poll routine and flag POLLIN/POLLOUT + * + * The pipe pollable synchronous I/O works using the overlapped event associated + * with a fake pipe. The read/write functions are only meant to be used in that + * context. + */ +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <io.h> + +#include <libusbi.h> + +// Uncomment to debug the polling layer +//#define DEBUG_POLL_WINDOWS +#if defined(DEBUG_POLL_WINDOWS) +#define poll_dbg usbi_dbg +#else +// MSVC++ < 2005 cannot use a variadic argument and non MSVC +// compilers produce warnings if parenthesis are omitted. +#if defined(_MSC_VER) && _MSC_VER < 1400 +#define poll_dbg +#else +#define poll_dbg(...) +#endif +#endif + +#if defined(_PREFAST_) +#pragma warning(disable:28719) +#endif + +#if defined(__CYGWIN__) +// cygwin produces a warning unless these prototypes are defined +extern int _open(char* name, int flags); +extern int _close(int fd); +extern int _snprintf(char *buffer, size_t count, const char *format, ...); +#define NUL_DEVICE "/dev/null" +#else +#define NUL_DEVICE "NUL" +#endif + +#define CHECK_INIT_POLLING do {if(!is_polling_set) init_polling();} while(0) + +// public fd data +const struct winfd INVALID_WINFD = {-1, INVALID_HANDLE_VALUE, NULL, RW_NONE}; +struct winfd poll_fd[MAX_FDS]; +// internal fd data +struct { + CRITICAL_SECTION mutex; // lock for fds + // Additional variables for XP CancelIoEx partial emulation + HANDLE original_handle; + DWORD thread_id; +} _poll_fd[MAX_FDS]; + +// globals +BOOLEAN is_polling_set = FALSE; +LONG pipe_number = 0; +static volatile LONG compat_spinlock = 0; + +// CancelIoEx, available on Vista and later only, provides the ability to cancel +// a single transfer (OVERLAPPED) when used. As it may not be part of any of the +// platform headers, we hook into the Kernel32 system DLL directly to seek it. +static BOOL (__stdcall *pCancelIoEx)(HANDLE, LPOVERLAPPED) = NULL; +#define CancelIoEx_Available (pCancelIoEx != NULL) +static __inline BOOL cancel_io(int _index) +{ + if ((_index < 0) || (_index >= MAX_FDS)) { + return FALSE; + } + + if ( (poll_fd[_index].fd < 0) || (poll_fd[_index].handle == INVALID_HANDLE_VALUE) + || (poll_fd[_index].handle == 0) || (poll_fd[_index].overlapped == NULL) ) { + return TRUE; + } + if (CancelIoEx_Available) { + return (*pCancelIoEx)(poll_fd[_index].handle, poll_fd[_index].overlapped); + } + if (_poll_fd[_index].thread_id == GetCurrentThreadId()) { + return CancelIo(poll_fd[_index].handle); + } + usbi_warn(NULL, "Unable to cancel I/O that was started from another thread"); + return FALSE; +} + +// Init +void init_polling(void) +{ + int i; + + while (InterlockedExchange((LONG *)&compat_spinlock, 1) == 1) { + SleepEx(0, TRUE); + } + if (!is_polling_set) { + pCancelIoEx = (BOOL (__stdcall *)(HANDLE,LPOVERLAPPED)) + GetProcAddress(GetModuleHandleA("KERNEL32"), "CancelIoEx"); + usbi_dbg("Will use CancelIo%s for I/O cancellation", + CancelIoEx_Available?"Ex":""); + for (i=0; i<MAX_FDS; i++) { + poll_fd[i] = INVALID_WINFD; + _poll_fd[i].original_handle = INVALID_HANDLE_VALUE; + _poll_fd[i].thread_id = 0; + InitializeCriticalSection(&_poll_fd[i].mutex); + } + is_polling_set = TRUE; + } + compat_spinlock = 0; +} + +// Internal function to retrieve the table index (and lock the fd mutex) +int _fd_to_index_and_lock(int fd) +{ + int i; + + if (fd <= 0) + return -1; + + for (i=0; i<MAX_FDS; i++) { + if (poll_fd[i].fd == fd) { + EnterCriticalSection(&_poll_fd[i].mutex); + // fd might have changed before we got to critical + if (poll_fd[i].fd != fd) { + LeaveCriticalSection(&_poll_fd[i].mutex); + continue; + } + return i; + } + } + return -1; +} + +OVERLAPPED *create_overlapped(void) +{ + OVERLAPPED *overlapped = (OVERLAPPED*) calloc(1, sizeof(OVERLAPPED)); + if (overlapped == NULL) { + return NULL; + } + overlapped->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); + if(overlapped->hEvent == NULL) { + free (overlapped); + return NULL; + } + return overlapped; +} + +void free_overlapped(OVERLAPPED *overlapped) +{ + if (overlapped == NULL) + return; + + if ( (overlapped->hEvent != 0) + && (overlapped->hEvent != INVALID_HANDLE_VALUE) ) { + CloseHandle(overlapped->hEvent); + } + free(overlapped); +} + +void reset_overlapped(OVERLAPPED *overlapped) +{ + HANDLE event_handle; + if (overlapped == NULL) + return; + + event_handle = overlapped->hEvent; + if (event_handle != NULL) { + ResetEvent(event_handle); + } + memset(overlapped, 0, sizeof(OVERLAPPED)); + overlapped->hEvent = event_handle; +} + +void exit_polling(void) +{ + int i; + + while (InterlockedExchange((LONG *)&compat_spinlock, 1) == 1) { + SleepEx(0, TRUE); + } + if (is_polling_set) { + is_polling_set = FALSE; + + for (i=0; i<MAX_FDS; i++) { + // Cancel any async I/O (handle can be invalid) + cancel_io(i); + // If anything was pending on that I/O, it should be + // terminating, and we should be able to access the fd + // mutex lock before too long + EnterCriticalSection(&_poll_fd[i].mutex); + if ( (poll_fd[i].fd > 0) && (poll_fd[i].handle != INVALID_HANDLE_VALUE) && (poll_fd[i].handle != 0) + && (GetFileType(poll_fd[i].handle) == FILE_TYPE_UNKNOWN) ) { + _close(poll_fd[i].fd); + } + free_overlapped(poll_fd[i].overlapped); + if (!CancelIoEx_Available) { + // Close duplicate handle + if (_poll_fd[i].original_handle != INVALID_HANDLE_VALUE) { + CloseHandle(poll_fd[i].handle); + } + } + poll_fd[i] = INVALID_WINFD; + LeaveCriticalSection(&_poll_fd[i].mutex); + DeleteCriticalSection(&_poll_fd[i].mutex); + } + } + compat_spinlock = 0; +} + +/* + * Create a fake pipe. + * As libusb only uses pipes for signaling, all we need from a pipe is an + * event. To that extent, we create a single wfd and overlapped as a means + * to access that event. + */ +int usbi_pipe(int filedes[2]) +{ + int i; + OVERLAPPED* overlapped; + + CHECK_INIT_POLLING; + + overlapped = (OVERLAPPED*) calloc(1, sizeof(OVERLAPPED)); + if (overlapped == NULL) { + return -1; + } + // The overlapped must have status pending for signaling to work in poll + overlapped->Internal = STATUS_PENDING; + overlapped->InternalHigh = 0; + + // Read end of the "pipe" + filedes[0] = _open(NUL_DEVICE, _O_WRONLY); + if (filedes[0] < 0) { + usbi_err(NULL, "could not create pipe: errno %d", errno); + goto out1; + } + // We can use the same handle for both ends + filedes[1] = filedes[0]; + poll_dbg("pipe filedes = %d", filedes[0]); + + // Note: manual reset must be true (second param) as the reset occurs in read + overlapped->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); + if(!overlapped->hEvent) { + goto out2; + } + + for (i=0; i<MAX_FDS; i++) { + if (poll_fd[i].fd < 0) { + EnterCriticalSection(&_poll_fd[i].mutex); + // fd might have been allocated before we got to critical + if (poll_fd[i].fd >= 0) { + LeaveCriticalSection(&_poll_fd[i].mutex); + continue; + } + + poll_fd[i].fd = filedes[0]; + poll_fd[i].handle = DUMMY_HANDLE; + poll_fd[i].overlapped = overlapped; + // There's no polling on the write end, so we just use READ for our needs + poll_fd[i].rw = RW_READ; + _poll_fd[i].original_handle = INVALID_HANDLE_VALUE; + LeaveCriticalSection(&_poll_fd[i].mutex); + return 0; + } + } + + CloseHandle(overlapped->hEvent); +out2: + _close(filedes[0]); +out1: + free(overlapped); + return -1; +} + +/* + * Create both an fd and an OVERLAPPED from an open Windows handle, so that + * it can be used with our polling function + * The handle MUST support overlapped transfers (usually requires CreateFile + * with FILE_FLAG_OVERLAPPED) + * Return a pollable file descriptor struct, or INVALID_WINFD on error + * + * Note that the fd returned by this function is a per-transfer fd, rather + * than a per-session fd and cannot be used for anything else but our + * custom functions (the fd itself points to the NUL: device) + * if you plan to do R/W on the same handle, you MUST create 2 fds: one for + * read and one for write. Using a single R/W fd is unsupported and will + * produce unexpected results + */ +struct winfd usbi_create_fd(HANDLE handle, int access_mode) +{ + int i, fd; + struct winfd wfd = INVALID_WINFD; + OVERLAPPED* overlapped = NULL; + + CHECK_INIT_POLLING; + + if ((handle == 0) || (handle == INVALID_HANDLE_VALUE)) { + return INVALID_WINFD; + } + + if ((access_mode != _O_RDONLY) && (access_mode != _O_WRONLY)) { + usbi_warn(NULL, "only one of _O_RDONLY or _O_WRONLY are supported.\n" + "If you want to poll for R/W simultaneously, create multiple fds from the same handle."); + return INVALID_WINFD; + } + if (access_mode == _O_RDONLY) { + wfd.rw = RW_READ; + } else { + wfd.rw = RW_WRITE; + } + + // Ensure that we get a non system conflicting unique fd, using + // the same fd attribution system as the pipe ends + fd = _open(NUL_DEVICE, _O_WRONLY); + if (fd < 0) { + return INVALID_WINFD; + } + + overlapped = create_overlapped(); + if(overlapped == NULL) { + _close(fd); + return INVALID_WINFD; + } + + for (i=0; i<MAX_FDS; i++) { + if (poll_fd[i].fd < 0) { + EnterCriticalSection(&_poll_fd[i].mutex); + // fd might have been removed before we got to critical + if (poll_fd[i].fd >= 0) { + LeaveCriticalSection(&_poll_fd[i].mutex); + continue; + } + wfd.fd = fd; + // Attempt to emulate some of the CancelIoEx behaviour on platforms + // that don't have it + if (!CancelIoEx_Available) { + _poll_fd[i].thread_id = GetCurrentThreadId(); + if (!DuplicateHandle(GetCurrentProcess(), handle, GetCurrentProcess(), + &wfd.handle, 0, TRUE, DUPLICATE_SAME_ACCESS)) { + usbi_dbg("could not duplicate handle for CancelIo - using original one"); + wfd.handle = handle; + // Make sure we won't close the original handle on fd deletion then + _poll_fd[i].original_handle = INVALID_HANDLE_VALUE; + } else { + _poll_fd[i].original_handle = handle; + } + } else { + wfd.handle = handle; + } + wfd.overlapped = overlapped; + memcpy(&poll_fd[i], &wfd, sizeof(struct winfd)); + LeaveCriticalSection(&_poll_fd[i].mutex); + return wfd; + } + } + free_overlapped(overlapped); + _close(fd); + return INVALID_WINFD; +} + +void _free_index(int _index) +{ + // Cancel any async IO (Don't care about the validity of our handles for this) + cancel_io(_index); + // close fake handle for devices + if ( (poll_fd[_index].handle != INVALID_HANDLE_VALUE) && (poll_fd[_index].handle != 0) + && (GetFileType(poll_fd[_index].handle) == FILE_TYPE_UNKNOWN) ) { + _close(poll_fd[_index].fd); + } + // close the duplicate handle (if we have an actual duplicate) + if (!CancelIoEx_Available) { + if (_poll_fd[_index].original_handle != INVALID_HANDLE_VALUE) { + CloseHandle(poll_fd[_index].handle); + } + _poll_fd[_index].original_handle = INVALID_HANDLE_VALUE; + _poll_fd[_index].thread_id = 0; + } + free_overlapped(poll_fd[_index].overlapped); + poll_fd[_index] = INVALID_WINFD; +} + +/* + * Release a pollable file descriptor. + * + * Note that the associated Windows handle is not closed by this call + */ +void usbi_free_fd(int fd) +{ + int _index; + + CHECK_INIT_POLLING; + + _index = _fd_to_index_and_lock(fd); + if (_index < 0) { + return; + } + _free_index(_index); + LeaveCriticalSection(&_poll_fd[_index].mutex); +} + +/* + * The functions below perform various conversions between fd, handle and OVERLAPPED + */ +struct winfd fd_to_winfd(int fd) +{ + int i; + struct winfd wfd; + + CHECK_INIT_POLLING; + + if (fd <= 0) + return INVALID_WINFD; + + for (i=0; i<MAX_FDS; i++) { + if (poll_fd[i].fd == fd) { + EnterCriticalSection(&_poll_fd[i].mutex); + // fd might have been deleted before we got to critical + if (poll_fd[i].fd != fd) { + LeaveCriticalSection(&_poll_fd[i].mutex); + continue; + } + memcpy(&wfd, &poll_fd[i], sizeof(struct winfd)); + LeaveCriticalSection(&_poll_fd[i].mutex); + return wfd; + } + } + return INVALID_WINFD; +} + +struct winfd handle_to_winfd(HANDLE handle) +{ + int i; + struct winfd wfd; + + CHECK_INIT_POLLING; + + if ((handle == 0) || (handle == INVALID_HANDLE_VALUE)) + return INVALID_WINFD; + + for (i=0; i<MAX_FDS; i++) { + if (poll_fd[i].handle == handle) { + EnterCriticalSection(&_poll_fd[i].mutex); + // fd might have been deleted before we got to critical + if (poll_fd[i].handle != handle) { + LeaveCriticalSection(&_poll_fd[i].mutex); + continue; + } + memcpy(&wfd, &poll_fd[i], sizeof(struct winfd)); + LeaveCriticalSection(&_poll_fd[i].mutex); + return wfd; + } + } + return INVALID_WINFD; +} + +struct winfd overlapped_to_winfd(OVERLAPPED* overlapped) +{ + int i; + struct winfd wfd; + + CHECK_INIT_POLLING; + + if (overlapped == NULL) + return INVALID_WINFD; + + for (i=0; i<MAX_FDS; i++) { + if (poll_fd[i].overlapped == overlapped) { + EnterCriticalSection(&_poll_fd[i].mutex); + // fd might have been deleted before we got to critical + if (poll_fd[i].overlapped != overlapped) { + LeaveCriticalSection(&_poll_fd[i].mutex); + continue; + } + memcpy(&wfd, &poll_fd[i], sizeof(struct winfd)); + LeaveCriticalSection(&_poll_fd[i].mutex); + return wfd; + } + } + return INVALID_WINFD; +} + +/* + * POSIX poll equivalent, using Windows OVERLAPPED + * Currently, this function only accepts one of POLLIN or POLLOUT per fd + * (but you can create multiple fds from the same handle for read and write) + */ +int usbi_poll(struct pollfd *fds, unsigned int nfds, int timeout) +{ + unsigned i; + int _index, object_index, triggered; + HANDLE *handles_to_wait_on; + int *handle_to_index; + DWORD nb_handles_to_wait_on = 0; + DWORD ret; + + CHECK_INIT_POLLING; + + triggered = 0; + handles_to_wait_on = (HANDLE*) calloc(nfds+1, sizeof(HANDLE)); // +1 for fd_update + handle_to_index = (int*) calloc(nfds, sizeof(int)); + if ((handles_to_wait_on == NULL) || (handle_to_index == NULL)) { + errno = ENOMEM; + triggered = -1; + goto poll_exit; + } + + for (i = 0; i < nfds; ++i) { + fds[i].revents = 0; + + // Only one of POLLIN or POLLOUT can be selected with this version of poll (not both) + if ((fds[i].events & ~POLLIN) && (!(fds[i].events & POLLOUT))) { + fds[i].revents |= POLLERR; + errno = EACCES; + usbi_warn(NULL, "unsupported set of events"); + triggered = -1; + goto poll_exit; + } + + _index = _fd_to_index_and_lock(fds[i].fd); + poll_dbg("fd[%d]=%d: (overlapped=%p) got events %04X", i, poll_fd[_index].fd, poll_fd[_index].overlapped, fds[i].events); + + if ( (_index < 0) || (poll_fd[_index].handle == INVALID_HANDLE_VALUE) + || (poll_fd[_index].handle == 0) || (poll_fd[_index].overlapped == NULL)) { + fds[i].revents |= POLLNVAL | POLLERR; + errno = EBADF; + if (_index >= 0) { + LeaveCriticalSection(&_poll_fd[_index].mutex); + } + usbi_warn(NULL, "invalid fd"); + triggered = -1; + goto poll_exit; + } + + // IN or OUT must match our fd direction + if ((fds[i].events & POLLIN) && (poll_fd[_index].rw != RW_READ)) { + fds[i].revents |= POLLNVAL | POLLERR; + errno = EBADF; + usbi_warn(NULL, "attempted POLLIN on fd without READ access"); + LeaveCriticalSection(&_poll_fd[_index].mutex); + triggered = -1; + goto poll_exit; + } + + if ((fds[i].events & POLLOUT) && (poll_fd[_index].rw != RW_WRITE)) { + fds[i].revents |= POLLNVAL | POLLERR; + errno = EBADF; + usbi_warn(NULL, "attempted POLLOUT on fd without WRITE access"); + LeaveCriticalSection(&_poll_fd[_index].mutex); + triggered = -1; + goto poll_exit; + } + + // The following macro only works if overlapped I/O was reported pending + if ( (HasOverlappedIoCompleted(poll_fd[_index].overlapped)) + || (HasOverlappedIoCompletedSync(poll_fd[_index].overlapped)) ) { + poll_dbg(" completed"); + // checks above should ensure this works: + fds[i].revents = fds[i].events; + triggered++; + } else { + handles_to_wait_on[nb_handles_to_wait_on] = poll_fd[_index].overlapped->hEvent; + handle_to_index[nb_handles_to_wait_on] = i; + nb_handles_to_wait_on++; + } + LeaveCriticalSection(&_poll_fd[_index].mutex); + } + + // If nothing was triggered, wait on all fds that require it + if ((timeout != 0) && (triggered == 0) && (nb_handles_to_wait_on != 0)) { + if (timeout < 0) { + poll_dbg("starting infinite wait for %d handles...", (int)nb_handles_to_wait_on); + } else { + poll_dbg("starting %d ms wait for %d handles...", timeout, (int)nb_handles_to_wait_on); + } + ret = WaitForMultipleObjects(nb_handles_to_wait_on, handles_to_wait_on, + FALSE, (timeout<0)?INFINITE:(DWORD)timeout); + object_index = ret-WAIT_OBJECT_0; + if ((object_index >= 0) && ((DWORD)object_index < nb_handles_to_wait_on)) { + poll_dbg(" completed after wait"); + i = handle_to_index[object_index]; + _index = _fd_to_index_and_lock(fds[i].fd); + fds[i].revents = fds[i].events; + triggered++; + if (_index >= 0) { + LeaveCriticalSection(&_poll_fd[_index].mutex); + } + } else if (ret == WAIT_TIMEOUT) { + poll_dbg(" timed out"); + triggered = 0; // 0 = timeout + } else { + errno = EIO; + triggered = -1; // error + } + } + +poll_exit: + if (handles_to_wait_on != NULL) { + free(handles_to_wait_on); + } + if (handle_to_index != NULL) { + free(handle_to_index); + } + return triggered; +} + +/* + * close a fake pipe fd + */ +int usbi_close(int fd) +{ + int _index; + int r = -1; + + CHECK_INIT_POLLING; + + _index = _fd_to_index_and_lock(fd); + + if (_index < 0) { + errno = EBADF; + } else { + if (poll_fd[_index].overlapped != NULL) { + // Must be a different event for each end of the pipe + CloseHandle(poll_fd[_index].overlapped->hEvent); + free(poll_fd[_index].overlapped); + } + r = _close(poll_fd[_index].fd); + if (r != 0) { + errno = EIO; + } + poll_fd[_index] = INVALID_WINFD; + LeaveCriticalSection(&_poll_fd[_index].mutex); + } + return r; +} + +/* + * synchronous write for fake "pipe" signaling + */ +ssize_t usbi_write(int fd, const void *buf, size_t count) +{ + int _index; + + CHECK_INIT_POLLING; + + if (count != sizeof(unsigned char)) { + usbi_err(NULL, "this function should only used for signaling"); + return -1; + } + + _index = _fd_to_index_and_lock(fd); + + if ( (_index < 0) || (poll_fd[_index].overlapped == NULL) ) { + errno = EBADF; + if (_index >= 0) { + LeaveCriticalSection(&_poll_fd[_index].mutex); + } + return -1; + } + + poll_dbg("set pipe event (fd = %d, thread = %08X)", _index, GetCurrentThreadId()); + SetEvent(poll_fd[_index].overlapped->hEvent); + poll_fd[_index].overlapped->Internal = STATUS_WAIT_0; + // If two threads write on the pipe at the same time, we need to + // process two separate reads => use the overlapped as a counter + poll_fd[_index].overlapped->InternalHigh++; + + LeaveCriticalSection(&_poll_fd[_index].mutex); + return sizeof(unsigned char); +} + +/* + * synchronous read for fake "pipe" signaling + */ +ssize_t usbi_read(int fd, void *buf, size_t count) +{ + int _index; + ssize_t r = -1; + + CHECK_INIT_POLLING; + + if (count != sizeof(unsigned char)) { + usbi_err(NULL, "this function should only used for signaling"); + return -1; + } + + _index = _fd_to_index_and_lock(fd); + + if (_index < 0) { + errno = EBADF; + return -1; + } + + if (WaitForSingleObject(poll_fd[_index].overlapped->hEvent, INFINITE) != WAIT_OBJECT_0) { + usbi_warn(NULL, "waiting for event failed: %d", (int)GetLastError()); + errno = EIO; + goto out; + } + + poll_dbg("clr pipe event (fd = %d, thread = %08X)", _index, GetCurrentThreadId()); + poll_fd[_index].overlapped->InternalHigh--; + // Don't reset unless we don't have any more events to process + if (poll_fd[_index].overlapped->InternalHigh <= 0) { + ResetEvent(poll_fd[_index].overlapped->hEvent); + poll_fd[_index].overlapped->Internal = STATUS_PENDING; + } + + r = sizeof(unsigned char); + +out: + LeaveCriticalSection(&_poll_fd[_index].mutex); + return r; +} diff --git a/libusb/os/poll_windows.h b/libusb/os/poll_windows.h new file mode 100644 index 0000000..6e5bf2b --- /dev/null +++ b/libusb/os/poll_windows.h @@ -0,0 +1,115 @@ +/* + * Windows compat: POSIX compatibility wrapper + * Copyright (C) 2009-2010 Pete Batard <pbatard@gmail.com> + * With contributions from Michael Plante, Orin Eman et al. + * Parts of poll implementation from libusb-win32, by Stephan Meyer et al. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + */ +#pragma once + +#if defined(_MSC_VER) +// disable /W4 MSVC warnings that are benign +#pragma warning(disable:4127) // conditional expression is constant +#endif + +// Handle synchronous completion through the overlapped structure +#if !defined(STATUS_REPARSE) // reuse the REPARSE status code +#define STATUS_REPARSE ((LONG)0x00000104L) +#endif +#define STATUS_COMPLETED_SYNCHRONOUSLY STATUS_REPARSE +#define HasOverlappedIoCompletedSync(lpOverlapped) (((DWORD)(lpOverlapped)->Internal) == STATUS_COMPLETED_SYNCHRONOUSLY) + +#define DUMMY_HANDLE ((HANDLE)(LONG_PTR)-2) + +enum windows_version { + WINDOWS_UNSUPPORTED, + WINDOWS_XP, + WINDOWS_2003, // also includes XP 64 + WINDOWS_VISTA_AND_LATER, +}; +extern enum windows_version windows_version; + +#define MAX_FDS 256 + +#define POLLIN 0x0001 /* There is data to read */ +#define POLLPRI 0x0002 /* There is urgent data to read */ +#define POLLOUT 0x0004 /* Writing now will not block */ +#define POLLERR 0x0008 /* Error condition */ +#define POLLHUP 0x0010 /* Hung up */ +#define POLLNVAL 0x0020 /* Invalid request: fd not open */ + +struct pollfd { + int fd; /* file descriptor */ + short events; /* requested events */ + short revents; /* returned events */ +}; + +// access modes +enum rw_type { + RW_NONE, + RW_READ, + RW_WRITE, +}; + +// fd struct that can be used for polling on Windows +struct winfd { + int fd; // what's exposed to libusb core + HANDLE handle; // what we need to attach overlapped to the I/O op, so we can poll it + OVERLAPPED* overlapped; // what will report our I/O status + enum rw_type rw; // I/O transfer direction: read *XOR* write (NOT BOTH) +}; +extern const struct winfd INVALID_WINFD; + +int usbi_pipe(int pipefd[2]); +int usbi_poll(struct pollfd *fds, unsigned int nfds, int timeout); +ssize_t usbi_write(int fd, const void *buf, size_t count); +ssize_t usbi_read(int fd, void *buf, size_t count); +int usbi_close(int fd); + +void init_polling(void); +void exit_polling(void); +struct winfd usbi_create_fd(HANDLE handle, int access_mode); +void usbi_free_fd(int fd); +struct winfd fd_to_winfd(int fd); +struct winfd handle_to_winfd(HANDLE handle); +struct winfd overlapped_to_winfd(OVERLAPPED* overlapped); + +/* + * Timeval operations + */ +#if defined(DDKBUILD) +#include <winsock.h> // defines timeval functions on DDK +#endif + +#if !defined(TIMESPEC_TO_TIMEVAL) +#define TIMESPEC_TO_TIMEVAL(tv, ts) { \ + (tv)->tv_sec = (long)(ts)->tv_sec; \ + (tv)->tv_usec = (long)(ts)->tv_nsec / 1000; \ +} +#endif +#if !defined(timersub) +#define timersub(a, b, result) \ +do { \ + (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ + (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ + if ((result)->tv_usec < 0) { \ + --(result)->tv_sec; \ + (result)->tv_usec += 1000000; \ + } \ +} while (0) +#endif + diff --git a/libusb/os/threads_posix.c b/libusb/os/threads_posix.c new file mode 100644 index 0000000..60c57cf --- /dev/null +++ b/libusb/os/threads_posix.c @@ -0,0 +1,55 @@ +/* + * libusb synchronization using POSIX Threads + * + * Copyright (C) 2011 Vitali Lovich <vlovich@aliph.com> + * Copyright (C) 2011 Peter Stuge <peter@stuge.se> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifdef _XOPEN_SOURCE +# if _XOPEN_SOURCE < 500 +# undef _XOPEN_SOURCE +# define _XOPEN_SOURCE 500 +# endif +#else +#define _XOPEN_SOURCE 500 +#endif /* _XOPEN_SOURCE */ + +#include "threads_posix.h" + +int usbi_mutex_init_recursive(pthread_mutex_t *mutex, pthread_mutexattr_t *attr) +{ + int err; + pthread_mutexattr_t stack_attr; + if (!attr) { + attr = &stack_attr; + err = pthread_mutexattr_init(&stack_attr); + if (err != 0) + return err; + } + + err = pthread_mutexattr_settype(attr, PTHREAD_MUTEX_RECURSIVE); + if (err != 0) + goto finish; + + err = pthread_mutex_init(mutex, attr); + +finish: + if (attr == &stack_attr) + pthread_mutexattr_destroy(&stack_attr); + + return err; +} diff --git a/libusb/os/threads_posix.h b/libusb/os/threads_posix.h new file mode 100644 index 0000000..9752208 --- /dev/null +++ b/libusb/os/threads_posix.h @@ -0,0 +1,48 @@ +/* + * libusb synchronization using POSIX Threads + * + * Copyright (C) 2010 Peter Stuge <peter@stuge.se> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef LIBUSB_THREADS_POSIX_H +#define LIBUSB_THREADS_POSIX_H + +#include <pthread.h> + +#define usbi_mutex_static_t pthread_mutex_t +#define USBI_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER +#define usbi_mutex_static_lock pthread_mutex_lock +#define usbi_mutex_static_unlock pthread_mutex_unlock + +#define usbi_mutex_t pthread_mutex_t +#define usbi_mutex_init pthread_mutex_init +#define usbi_mutex_lock pthread_mutex_lock +#define usbi_mutex_unlock pthread_mutex_unlock +#define usbi_mutex_trylock pthread_mutex_trylock +#define usbi_mutex_destroy pthread_mutex_destroy + +#define usbi_cond_t pthread_cond_t +#define usbi_cond_init pthread_cond_init +#define usbi_cond_wait pthread_cond_wait +#define usbi_cond_timedwait pthread_cond_timedwait +#define usbi_cond_broadcast pthread_cond_broadcast +#define usbi_cond_destroy pthread_cond_destroy +#define usbi_cond_signal pthread_cond_signal + +extern int usbi_mutex_init_recursive(pthread_mutex_t *mutex, pthread_mutexattr_t *attr); + +#endif /* LIBUSB_THREADS_POSIX_H */ diff --git a/libusb/os/threads_windows.c b/libusb/os/threads_windows.c new file mode 100644 index 0000000..1394bb0 --- /dev/null +++ b/libusb/os/threads_windows.c @@ -0,0 +1,207 @@ +/* + * libusb synchronization on Microsoft Windows + * + * Copyright (C) 2010 Michael Plante <michael.plante@gmail.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <config.h> +#include <objbase.h> +#include <errno.h> +#include <stdarg.h> + +#include "libusbi.h" + + +int usbi_mutex_init(usbi_mutex_t *mutex, + const usbi_mutexattr_t *attr) { + if(! mutex) return ((errno=EINVAL)); + *mutex = CreateMutex(NULL, FALSE, NULL); + if(!*mutex) return ((errno=ENOMEM)); + return 0; +} +int usbi_mutex_destroy(usbi_mutex_t *mutex) { + // It is not clear if CloseHandle failure is due to failure to unlock. + // If so, this should be errno=EBUSY. + if(!mutex || !CloseHandle(*mutex)) return ((errno=EINVAL)); + *mutex = NULL; + return 0; +} +int usbi_mutex_trylock(usbi_mutex_t *mutex) { + DWORD result; + if(!mutex) return ((errno=EINVAL)); + result = WaitForSingleObject(*mutex, 0); + if(result == WAIT_OBJECT_0 || result == WAIT_ABANDONED) + return 0; // acquired (ToDo: check that abandoned is ok) + if(result == WAIT_TIMEOUT) + return ((errno=EBUSY)); + return ((errno=EINVAL)); // don't know how this would happen + // so don't know proper errno +} +int usbi_mutex_lock(usbi_mutex_t *mutex) { + DWORD result; + if(!mutex) return ((errno=EINVAL)); + result = WaitForSingleObject(*mutex, INFINITE); + if(result == WAIT_OBJECT_0 || result == WAIT_ABANDONED) + return 0; // acquired (ToDo: check that abandoned is ok) + return ((errno=EINVAL)); // don't know how this would happen + // so don't know proper errno +} +int usbi_mutex_unlock(usbi_mutex_t *mutex) { + if(!mutex) return ((errno=EINVAL)); + if(!ReleaseMutex(*mutex)) return ((errno=EPERM )); + return 0; +} + +int usbi_mutex_static_lock(usbi_mutex_static_t *mutex) { + if(!mutex) return ((errno=EINVAL)); + while (InterlockedExchange((LONG *)mutex, 1) == 1) { + SleepEx(0, TRUE); + } + return 0; +} +int usbi_mutex_static_unlock(usbi_mutex_static_t *mutex) { + if(!mutex) return ((errno=EINVAL)); + *mutex = 0; + return 0; +} + + + +int usbi_cond_init(usbi_cond_t *cond, + const usbi_condattr_t *attr) { + if(!cond) return ((errno=EINVAL)); + list_init(&cond->waiters ); + list_init(&cond->not_waiting); + return 0; +} +int usbi_cond_destroy(usbi_cond_t *cond) { + // This assumes no one is using this anymore. The check MAY NOT BE safe. + struct usbi_cond_perthread *pos, *prev_pos = NULL; + if(!cond) return ((errno=EINVAL)); + if(!list_empty(&cond->waiters)) return ((errno=EBUSY )); // (!see above!) + list_for_each_entry(pos, &cond->not_waiting, list, struct usbi_cond_perthread) { + free(prev_pos); + list_del(&pos->list); + prev_pos = pos; + } + free(prev_pos); + + return 0; +} + +int usbi_cond_broadcast(usbi_cond_t *cond) { + // Assumes mutex is locked; this is not in keeping with POSIX spec, but + // libusb does this anyway, so we simplify by not adding more sync + // primitives to the CV definition! + int fail = 0; + struct usbi_cond_perthread *pos; + if(!cond) return ((errno=EINVAL)); + list_for_each_entry(pos, &cond->waiters, list, struct usbi_cond_perthread) { + if(!SetEvent(pos->event)) + fail = 1; + } + // The wait function will remove its respective item from the list. + return fail ? ((errno=EINVAL)) : 0; +} +int usbi_cond_signal(usbi_cond_t *cond) { + // Assumes mutex is locked; this is not in keeping with POSIX spec, but + // libusb does this anyway, so we simplify by not adding more sync + // primitives to the CV definition! + struct usbi_cond_perthread *pos; + if(!cond) return ((errno=EINVAL)); + if(list_empty(&cond->waiters)) return 0; // no one to wakeup. + pos = list_entry(&cond->waiters.next, struct usbi_cond_perthread, list); + // The wait function will remove its respective item from the list. + return SetEvent(pos->event) ? 0 : ((errno=EINVAL)); +} +static int __inline usbi_cond_intwait(usbi_cond_t *cond, + usbi_mutex_t *mutex, + DWORD timeout_ms) { + struct usbi_cond_perthread *pos; + int found = 0, r; + DWORD r2,tid = GetCurrentThreadId(); + if(!cond || !mutex) return ((errno=EINVAL)); + list_for_each_entry(pos, &cond->not_waiting, list, struct usbi_cond_perthread) { + if(tid == pos->tid) { + found = 1; + break; + } + } + if(!found) { + pos = (struct usbi_cond_perthread*) calloc(1, sizeof(struct usbi_cond_perthread)); + if(!pos) return ((errno=ENOMEM)); // This errno is not POSIX-allowed. + pos->tid = tid; + pos->event = CreateEvent(NULL, FALSE, FALSE, NULL); // auto-reset. + if(!pos->event) { + free(pos); + return ((errno=ENOMEM)); + } + list_add(&pos->list, &cond->not_waiting); + } + + list_del(&pos->list); // remove from not_waiting list. + list_add(&pos->list, &cond->waiters); + + r = usbi_mutex_unlock(mutex); + if(r) return r; + r2 = WaitForSingleObject(pos->event, timeout_ms); + r = usbi_mutex_lock(mutex); + if(r) return r; + + list_del(&pos->list); + list_add(&pos->list, &cond->not_waiting); + + if(r2 == WAIT_TIMEOUT) return ((errno=ETIMEDOUT)); + + return 0; +} +// N.B.: usbi_cond_*wait() can also return ENOMEM, even though pthread_cond_*wait cannot! +int usbi_cond_wait(usbi_cond_t *cond, usbi_mutex_t *mutex) { + return usbi_cond_intwait(cond, mutex, INFINITE); +} +int usbi_cond_timedwait(usbi_cond_t *cond, + usbi_mutex_t *mutex, + const struct timespec *abstime) { + FILETIME filetime; + ULARGE_INTEGER rtime; + struct timeval targ_time, cur_time, delta_time; + struct timespec cur_time_ns; + DWORD millis; + extern const uint64_t epoch_time; + + GetSystemTimeAsFileTime(&filetime); + rtime.LowPart = filetime.dwLowDateTime; + rtime.HighPart = filetime.dwHighDateTime; + rtime.QuadPart -= epoch_time; + cur_time_ns.tv_sec = (long)(rtime.QuadPart / 10000000); + cur_time_ns.tv_nsec = (long)((rtime.QuadPart % 10000000)*100); + TIMESPEC_TO_TIMEVAL(&cur_time, &cur_time_ns); + + TIMESPEC_TO_TIMEVAL(&targ_time, abstime); + timersub(&targ_time, &cur_time, &delta_time); + if(delta_time.tv_sec < 0) // abstime already passed? + millis = 0; + else { + millis = delta_time.tv_usec/1000; + millis += delta_time.tv_sec *1000; + if (delta_time.tv_usec % 1000) // round up to next millisecond + millis++; + } + + return usbi_cond_intwait(cond, mutex, millis); +} + diff --git a/libusb/os/threads_windows.h b/libusb/os/threads_windows.h new file mode 100644 index 0000000..7bb144a --- /dev/null +++ b/libusb/os/threads_windows.h @@ -0,0 +1,86 @@ +/* + * libusb synchronization on Microsoft Windows + * + * Copyright (C) 2010 Michael Plante <michael.plante@gmail.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef LIBUSB_THREADS_WINDOWS_H +#define LIBUSB_THREADS_WINDOWS_H + +#define usbi_mutex_static_t volatile LONG +#define USBI_MUTEX_INITIALIZER 0 + +#define usbi_mutex_t HANDLE + +struct usbi_cond_perthread { + struct list_head list; + DWORD tid; + HANDLE event; +}; +struct usbi_cond_t_ { + // Every time a thread touches the CV, it winds up in one of these lists. + // It stays there until the CV is destroyed, even if the thread + // terminates. + struct list_head waiters; + struct list_head not_waiting; +}; +typedef struct usbi_cond_t_ usbi_cond_t; + +// We *were* getting timespec from pthread.h: +#if (!defined(HAVE_STRUCT_TIMESPEC) && !defined(_TIMESPEC_DEFINED)) +#define HAVE_STRUCT_TIMESPEC 1 +#define _TIMESPEC_DEFINED 1 +struct timespec { + long tv_sec; + long tv_nsec; +}; +#endif /* HAVE_STRUCT_TIMESPEC | _TIMESPEC_DEFINED */ + +// We *were* getting ETIMEDOUT from pthread.h: +#ifndef ETIMEDOUT +# define ETIMEDOUT 10060 /* This is the value in winsock.h. */ +#endif + +#define usbi_mutexattr_t void +#define usbi_condattr_t void + +// all Windows mutexes are recursive +#define usbi_mutex_init_recursive(mutex, attr) usbi_mutex_init((mutex), (attr)) + +int usbi_mutex_static_lock(usbi_mutex_static_t *mutex); +int usbi_mutex_static_unlock(usbi_mutex_static_t *mutex); + + +int usbi_mutex_init(usbi_mutex_t *mutex, + const usbi_mutexattr_t *attr); +int usbi_mutex_lock(usbi_mutex_t *mutex); +int usbi_mutex_unlock(usbi_mutex_t *mutex); +int usbi_mutex_trylock(usbi_mutex_t *mutex); +int usbi_mutex_destroy(usbi_mutex_t *mutex); + +int usbi_cond_init(usbi_cond_t *cond, + const usbi_condattr_t *attr); +int usbi_cond_destroy(usbi_cond_t *cond); +int usbi_cond_wait(usbi_cond_t *cond, usbi_mutex_t *mutex); +int usbi_cond_timedwait(usbi_cond_t *cond, + usbi_mutex_t *mutex, + const struct timespec *abstime); +int usbi_cond_broadcast(usbi_cond_t *cond); +int usbi_cond_signal(usbi_cond_t *cond); + +#endif /* LIBUSB_THREADS_WINDOWS_H */ + diff --git a/libusb/os/windows_usb.c b/libusb/os/windows_usb.c new file mode 100644 index 0000000..0739c19 --- /dev/null +++ b/libusb/os/windows_usb.c @@ -0,0 +1,2996 @@ +/* + * windows backend for libusb 1.0 + * Copyright (c) 2009-2010 Pete Batard <pbatard@gmail.com> + * With contributions from Michael Plante, Orin Eman et al. + * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer + * Hash table functions adapted from glibc, by Ulrich Drepper et al. + * Major code testing contribution by Xiaofan Chen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <config.h> +#include <windows.h> +#include <setupapi.h> +#include <ctype.h> +#include <errno.h> +#include <fcntl.h> +#include <process.h> +#include <stdio.h> +#include <inttypes.h> +#include <objbase.h> +#include <winioctl.h> + +#include <libusbi.h> +#include "poll_windows.h" +#include "windows_usb.h" + +// The following prevents "banned API" errors when using the MS's WDK OACR/Prefast +#if defined(_PREFAST_) +#pragma warning(disable:28719) +#endif + +// The 2 macros below are used in conjunction with safe loops. +#define LOOP_CHECK(fcall) { r=fcall; if (r != LIBUSB_SUCCESS) continue; } +#define LOOP_BREAK(err) { r=err; continue; } + +extern void usbi_fd_notification(struct libusb_context *ctx); + +// Helper prototypes +static int windows_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian); +static int windows_clock_gettime(int clk_id, struct timespec *tp); +unsigned __stdcall windows_clock_gettime_threaded(void* param); +// WinUSB API prototypes +static int winusb_init(struct libusb_context *ctx); +static int winusb_exit(void); +static int winusb_open(struct libusb_device_handle *dev_handle); +static void winusb_close(struct libusb_device_handle *dev_handle); +static int winusb_configure_endpoints(struct libusb_device_handle *dev_handle, int iface); +static int winusb_claim_interface(struct libusb_device_handle *dev_handle, int iface); +static int winusb_release_interface(struct libusb_device_handle *dev_handle, int iface); +static int winusb_submit_control_transfer(struct usbi_transfer *itransfer); +static int winusb_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting); +static int winusb_submit_bulk_transfer(struct usbi_transfer *itransfer); +static int winusb_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint); +static int winusb_abort_transfers(struct usbi_transfer *itransfer); +static int winusb_abort_control(struct usbi_transfer *itransfer); +static int winusb_reset_device(struct libusb_device_handle *dev_handle); +static int winusb_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size); +// Composite API prototypes +static int composite_init(struct libusb_context *ctx); +static int composite_exit(void); +static int composite_open(struct libusb_device_handle *dev_handle); +static void composite_close(struct libusb_device_handle *dev_handle); +static int composite_claim_interface(struct libusb_device_handle *dev_handle, int iface); +static int composite_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting); +static int composite_release_interface(struct libusb_device_handle *dev_handle, int iface); +static int composite_submit_control_transfer(struct usbi_transfer *itransfer); +static int composite_submit_bulk_transfer(struct usbi_transfer *itransfer); +static int composite_submit_iso_transfer(struct usbi_transfer *itransfer); +static int composite_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint); +static int composite_abort_transfers(struct usbi_transfer *itransfer); +static int composite_abort_control(struct usbi_transfer *itransfer); +static int composite_reset_device(struct libusb_device_handle *dev_handle); +static int composite_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size); + + +// Global variables +uint64_t hires_frequency, hires_ticks_to_ps; +const uint64_t epoch_time = UINT64_C(116444736000000000); // 1970.01.01 00:00:000 in MS Filetime +enum windows_version windows_version = WINDOWS_UNSUPPORTED; +// Concurrency +static int concurrent_usage = -1; +usbi_mutex_t autoclaim_lock; +// Timer thread +// NB: index 0 is for monotonic and 1 is for the thread exit event +HANDLE timer_thread = NULL; +HANDLE timer_mutex = NULL; +struct timespec timer_tp; +volatile LONG request_count[2] = {0, 1}; // last one must be > 0 +HANDLE timer_request[2] = { NULL, NULL }; +HANDLE timer_response = NULL; +// API globals +bool api_winusb_available = false; +#define CHECK_WINUSB_AVAILABLE do { if (!api_winusb_available) return LIBUSB_ERROR_ACCESS; } while (0) + +static inline BOOLEAN guid_eq(const GUID *guid1, const GUID *guid2) { + if ((guid1 != NULL) && (guid2 != NULL)) { + return (memcmp(guid1, guid2, sizeof(GUID)) == 0); + } + return false; +} + +#if defined(ENABLE_DEBUG_LOGGING) || (defined(_MSC_VER) && _MSC_VER < 1400) +static char* guid_to_string(const GUID* guid) +{ + static char guid_string[MAX_GUID_STRING_LENGTH]; + + if (guid == NULL) return NULL; + sprintf(guid_string, "{%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}", + (unsigned int)guid->Data1, guid->Data2, guid->Data3, + guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3], + guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7]); + return guid_string; +} +#endif + +/* + * Converts a windows error to human readable string + * uses retval as errorcode, or, if 0, use GetLastError() + */ +static char *windows_error_str(uint32_t retval) +{ +static char err_string[ERR_BUFFER_SIZE]; + + DWORD size; + size_t i; + uint32_t error_code, format_error; + + error_code = retval?retval:GetLastError(); + + safe_sprintf(err_string, ERR_BUFFER_SIZE, "[%d] ", error_code); + + size = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, error_code, + MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), &err_string[safe_strlen(err_string)], + ERR_BUFFER_SIZE - (DWORD)safe_strlen(err_string), NULL); + if (size == 0) { + format_error = GetLastError(); + if (format_error) + safe_sprintf(err_string, ERR_BUFFER_SIZE, + "Windows error code %u (FormatMessage error code %u)", error_code, format_error); + else + safe_sprintf(err_string, ERR_BUFFER_SIZE, "Unknown error code %u", error_code); + } else { + // Remove CR/LF terminators + for (i=safe_strlen(err_string)-1; ((err_string[i]==0x0A) || (err_string[i]==0x0D)); i--) { + err_string[i] = 0; + } + } + return err_string; +} + +/* + * Sanitize Microsoft's paths: convert to uppercase, add prefix and fix backslashes. + * Return an allocated sanitized string or NULL on error. + */ +static char* sanitize_path(const char* path) +{ + const char root_prefix[] = "\\\\.\\"; + size_t j, size, root_size; + char* ret_path = NULL; + size_t add_root = 0; + + if (path == NULL) + return NULL; + + size = safe_strlen(path)+1; + root_size = sizeof(root_prefix)-1; + + // Microsoft indiscriminatly uses '\\?\', '\\.\', '##?#" or "##.#" for root prefixes. + if (!((size > 3) && (((path[0] == '\\') && (path[1] == '\\') && (path[3] == '\\')) || + ((path[0] == '#') && (path[1] == '#') && (path[3] == '#'))))) { + add_root = root_size; + size += add_root; + } + + if ((ret_path = (char*)calloc(size, 1)) == NULL) + return NULL; + + safe_strcpy(&ret_path[add_root], size-add_root, path); + + // Ensure consistancy with root prefix + for (j=0; j<root_size; j++) + ret_path[j] = root_prefix[j]; + + // Same goes for '\' and '#' after the root prefix. Ensure '#' is used + for(j=root_size; j<size; j++) { + ret_path[j] = (char)toupper((int)ret_path[j]); // Fix case too + if (ret_path[j] == '\\') + ret_path[j] = '#'; + } + + return ret_path; +} + +/* + * Cfgmgr32, OLE32 and SetupAPI DLL functions + */ +static int init_dlls(void) +{ + DLL_LOAD(Cfgmgr32.dll, CM_Get_Parent, TRUE); + DLL_LOAD(Cfgmgr32.dll, CM_Get_Child, TRUE); + DLL_LOAD(Cfgmgr32.dll, CM_Get_Sibling, TRUE); + DLL_LOAD(Cfgmgr32.dll, CM_Get_Device_IDA, TRUE); + // Prefixed to avoid conflict with header files + DLL_LOAD_PREFIXED(OLE32.dll, p, CLSIDFromString, TRUE); + DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiGetClassDevsA, TRUE); + DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiEnumDeviceInfo, TRUE); + DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiEnumDeviceInterfaces, TRUE); + DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiGetDeviceInterfaceDetailA, TRUE); + DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiDestroyDeviceInfoList, TRUE); + DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiOpenDevRegKey, TRUE); + DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiGetDeviceRegistryPropertyA, TRUE); + DLL_LOAD_PREFIXED(AdvAPI32.dll, p, RegQueryValueExW, TRUE); + DLL_LOAD_PREFIXED(AdvAPI32.dll, p, RegCloseKey, TRUE); + return LIBUSB_SUCCESS; +} + +/* + * enumerate interfaces for the whole USB class + * + * Parameters: + * dev_info: a pointer to a dev_info list + * dev_info_data: a pointer to an SP_DEVINFO_DATA to be filled (or NULL if not needed) + * usb_class: the generic USB class for which to retrieve interface details + * index: zero based index of the interface in the device info list + * + * Note: it is the responsibility of the caller to free the DEVICE_INTERFACE_DETAIL_DATA + * structure returned and call this function repeatedly using the same guid (with an + * incremented index starting at zero) until all interfaces have been returned. + */ +static bool get_devinfo_data(struct libusb_context *ctx, + HDEVINFO *dev_info, SP_DEVINFO_DATA *dev_info_data, char* usb_class, unsigned _index) +{ + if (_index <= 0) { + *dev_info = pSetupDiGetClassDevsA(NULL, usb_class, NULL, DIGCF_PRESENT|DIGCF_ALLCLASSES); + if (*dev_info == INVALID_HANDLE_VALUE) { + return false; + } + } + + dev_info_data->cbSize = sizeof(SP_DEVINFO_DATA); + if (!pSetupDiEnumDeviceInfo(*dev_info, _index, dev_info_data)) { + if (GetLastError() != ERROR_NO_MORE_ITEMS) { + usbi_err(ctx, "Could not obtain device info data for index %u: %s", + _index, windows_error_str(0)); + } + pSetupDiDestroyDeviceInfoList(*dev_info); + *dev_info = INVALID_HANDLE_VALUE; + return false; + } + return true; +} + +/* + * enumerate interfaces for a specific GUID + * + * Parameters: + * dev_info: a pointer to a dev_info list + * dev_info_data: a pointer to an SP_DEVINFO_DATA to be filled (or NULL if not needed) + * guid: the GUID for which to retrieve interface details + * index: zero based index of the interface in the device info list + * + * Note: it is the responsibility of the caller to free the DEVICE_INTERFACE_DETAIL_DATA + * structure returned and call this function repeatedly using the same guid (with an + * incremented index starting at zero) until all interfaces have been returned. + */ +static SP_DEVICE_INTERFACE_DETAIL_DATA_A *get_interface_details(struct libusb_context *ctx, + HDEVINFO *dev_info, SP_DEVINFO_DATA *dev_info_data, const GUID* guid, unsigned _index) +{ + SP_DEVICE_INTERFACE_DATA dev_interface_data; + SP_DEVICE_INTERFACE_DETAIL_DATA_A *dev_interface_details = NULL; + DWORD size; + + if (_index <= 0) { + *dev_info = pSetupDiGetClassDevsA(guid, NULL, NULL, DIGCF_PRESENT|DIGCF_DEVICEINTERFACE); + } + + if (dev_info_data != NULL) { + dev_info_data->cbSize = sizeof(SP_DEVINFO_DATA); + if (!pSetupDiEnumDeviceInfo(*dev_info, _index, dev_info_data)) { + if (GetLastError() != ERROR_NO_MORE_ITEMS) { + usbi_err(ctx, "Could not obtain device info data for index %u: %s", + _index, windows_error_str(0)); + } + pSetupDiDestroyDeviceInfoList(*dev_info); + *dev_info = INVALID_HANDLE_VALUE; + return NULL; + } + } + + dev_interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); + if (!pSetupDiEnumDeviceInterfaces(*dev_info, NULL, guid, _index, &dev_interface_data)) { + if (GetLastError() != ERROR_NO_MORE_ITEMS) { + usbi_err(ctx, "Could not obtain interface data for index %u: %s", + _index, windows_error_str(0)); + } + pSetupDiDestroyDeviceInfoList(*dev_info); + *dev_info = INVALID_HANDLE_VALUE; + return NULL; + } + + // Read interface data (dummy + actual) to access the device path + if (!pSetupDiGetDeviceInterfaceDetailA(*dev_info, &dev_interface_data, NULL, 0, &size, NULL)) { + // The dummy call should fail with ERROR_INSUFFICIENT_BUFFER + if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) { + usbi_err(ctx, "could not access interface data (dummy) for index %u: %s", + _index, windows_error_str(0)); + goto err_exit; + } + } else { + usbi_err(ctx, "program assertion failed - http://msdn.microsoft.com/en-us/library/ms792901.aspx is wrong."); + goto err_exit; + } + + if ((dev_interface_details = (SP_DEVICE_INTERFACE_DETAIL_DATA_A*) calloc(size, 1)) == NULL) { + usbi_err(ctx, "could not allocate interface data for index %u.", _index); + goto err_exit; + } + + dev_interface_details->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_A); + if (!pSetupDiGetDeviceInterfaceDetailA(*dev_info, &dev_interface_data, + dev_interface_details, size, &size, NULL)) { + usbi_err(ctx, "could not access interface data (actual) for index %u: %s", + _index, windows_error_str(0)); + } + + return dev_interface_details; + +err_exit: + pSetupDiDestroyDeviceInfoList(*dev_info); + *dev_info = INVALID_HANDLE_VALUE; + return NULL; +} + +/* Hash table functions - modified From glibc 2.3.2: + [Aho,Sethi,Ullman] Compilers: Principles, Techniques and Tools, 1986 + [Knuth] The Art of Computer Programming, part 3 (6.4) */ +typedef struct htab_entry { + unsigned long used; + char* str; +} htab_entry; +htab_entry* htab_table = NULL; +usbi_mutex_t htab_write_mutex = NULL; +unsigned long htab_size, htab_filled; + +/* For the used double hash method the table size has to be a prime. To + correct the user given table size we need a prime test. This trivial + algorithm is adequate because the code is called only during init and + the number is likely to be small */ +static int isprime(unsigned long number) +{ + // no even number will be passed + unsigned int divider = 3; + + while((divider * divider < number) && (number % divider != 0)) + divider += 2; + + return (number % divider != 0); +} + +/* Before using the hash table we must allocate memory for it. + We allocate one element more as the found prime number says. + This is done for more effective indexing as explained in the + comment for the hash function. */ +static int htab_create(struct libusb_context *ctx, unsigned long nel) +{ + if (htab_table != NULL) { + usbi_err(ctx, "hash table already allocated"); + } + + // Create a mutex + usbi_mutex_init(&htab_write_mutex, NULL); + + // Change nel to the first prime number not smaller as nel. + nel |= 1; + while(!isprime(nel)) + nel += 2; + + htab_size = nel; + usbi_dbg("using %d entries hash table", nel); + htab_filled = 0; + + // allocate memory and zero out. + htab_table = (htab_entry*)calloc(htab_size + 1, sizeof(htab_entry)); + if (htab_table == NULL) { + usbi_err(ctx, "could not allocate space for hash table"); + return 0; + } + + return 1; +} + +/* After using the hash table it has to be destroyed. */ +static void htab_destroy(void) +{ + size_t i; + if (htab_table == NULL) { + return; + } + + for (i=0; i<htab_size; i++) { + if (htab_table[i].used) { + safe_free(htab_table[i].str); + } + } + usbi_mutex_destroy(&htab_write_mutex); + safe_free(htab_table); +} + +/* This is the search function. It uses double hashing with open addressing. + We use an trick to speed up the lookup. The table is created with one + more element available. This enables us to use the index zero special. + This index will never be used because we store the first hash index in + the field used where zero means not used. Every other value means used. + The used field can be used as a first fast comparison for equality of + the stored and the parameter value. This helps to prevent unnecessary + expensive calls of strcmp. */ +static unsigned long htab_hash(char* str) +{ + unsigned long hval, hval2; + unsigned long idx; + unsigned long r = 5381; + int c; + char* sz = str; + + // Compute main hash value (algorithm suggested by Nokia) + while ((c = *sz++)) + r = ((r << 5) + r) + c; + if (r == 0) + ++r; + + // compute table hash: simply take the modulus + hval = r % htab_size; + if (hval == 0) + ++hval; + + // Try the first index + idx = hval; + + if (htab_table[idx].used) { + if ( (htab_table[idx].used == hval) + && (safe_strcmp(str, htab_table[idx].str) == 0) ) { + // existing hash + return idx; + } + usbi_dbg("hash collision ('%s' vs '%s')", str, htab_table[idx].str); + + // Second hash function, as suggested in [Knuth] + hval2 = 1 + hval % (htab_size - 2); + + do { + // Because size is prime this guarantees to step through all available indexes + if (idx <= hval2) { + idx = htab_size + idx - hval2; + } else { + idx -= hval2; + } + + // If we visited all entries leave the loop unsuccessfully + if (idx == hval) { + break; + } + + // If entry is found use it. + if ( (htab_table[idx].used == hval) + && (safe_strcmp(str, htab_table[idx].str) == 0) ) { + return idx; + } + } + while (htab_table[idx].used); + } + + // Not found => New entry + + // If the table is full return an error + if (htab_filled >= htab_size) { + usbi_err(NULL, "hash table is full (%d entries)", htab_size); + return 0; + } + + // Concurrent threads might be storing the same entry at the same time + // (eg. "simultaneous" enums from different threads) => use a mutex + usbi_mutex_lock(&htab_write_mutex); + // Just free any previously allocated string (which should be the same as + // new one). The possibility of concurrent threads storing a collision + // string (same hash, different string) at the same time is extremely low + safe_free(htab_table[idx].str); + htab_table[idx].used = hval; + htab_table[idx].str = (char*) calloc(1, safe_strlen(str)+1); + if (htab_table[idx].str == NULL) { + usbi_err(NULL, "could not duplicate string for hash table"); + usbi_mutex_unlock(&htab_write_mutex); + return 0; + } + memcpy(htab_table[idx].str, str, safe_strlen(str)+1); + ++htab_filled; + usbi_mutex_unlock(&htab_write_mutex); + + return idx; +} + +/* + * Returns the session ID of a device's nth level ancestor + * If there's no device at the nth level, return 0 + */ +static unsigned long get_ancestor_session_id(DWORD devinst, unsigned level) +{ + DWORD parent_devinst; + unsigned long session_id = 0; + char* sanitized_path = NULL; + char path[MAX_PATH_LENGTH]; + unsigned i; + + if (level < 1) return 0; + for (i = 0; i<level; i++) { + if (CM_Get_Parent(&parent_devinst, devinst, 0) != CR_SUCCESS) { + return 0; + } + devinst = parent_devinst; + } + if (CM_Get_Device_IDA(devinst, path, MAX_PATH_LENGTH, 0) != CR_SUCCESS) { + return 0; + } + // TODO (post hotplug): try without sanitizing + sanitized_path = sanitize_path(path); + if (sanitized_path == NULL) { + return 0; + } + session_id = htab_hash(sanitized_path); + safe_free(sanitized_path); + return session_id; +} + +/* + * Populate the endpoints addresses of the device_priv interface helper structs + */ +static int windows_assign_endpoints(struct libusb_device_handle *dev_handle, int iface, int altsetting) +{ + int i, r; + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + struct libusb_config_descriptor *conf_desc; + const struct libusb_interface_descriptor *if_desc; + struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); + + r = libusb_get_config_descriptor(dev_handle->dev, 0, &conf_desc); + if (r != LIBUSB_SUCCESS) { + usbi_warn(ctx, "could not read config descriptor: error %d", r); + return r; + } + + if_desc = &conf_desc->interface[iface].altsetting[altsetting]; + safe_free(priv->usb_interface[iface].endpoint); + + if (if_desc->bNumEndpoints == 0) { + usbi_dbg("no endpoints found for interface %d", iface); + return LIBUSB_SUCCESS; + } + + priv->usb_interface[iface].endpoint = (uint8_t*) calloc(1, if_desc->bNumEndpoints); + if (priv->usb_interface[iface].endpoint == NULL) { + return LIBUSB_ERROR_NO_MEM; + } + + priv->usb_interface[iface].nb_endpoints = if_desc->bNumEndpoints; + for (i=0; i<if_desc->bNumEndpoints; i++) { + priv->usb_interface[iface].endpoint[i] = if_desc->endpoint[i].bEndpointAddress; + usbi_dbg("(re)assigned endpoint %02X to interface %d", priv->usb_interface[iface].endpoint[i], iface); + } + libusb_free_config_descriptor(conf_desc); + + // Extra init is required for WinUSB endpoints + if (priv->apib->id == USB_API_WINUSB) { + return winusb_configure_endpoints(dev_handle, iface); + } + + return LIBUSB_SUCCESS; +} + +// Lookup for a match in the list of API driver names +static bool is_api_driver(char* driver, uint8_t api) +{ + uint8_t i; + const char sep_str[2] = {LIST_SEPARATOR, 0}; + char *tok, *tmp_str; + size_t len = safe_strlen(driver); + + if (len == 0) return false; + tmp_str = (char*) calloc(1, len+1); + if (tmp_str == NULL) return false; + memcpy(tmp_str, driver, len+1); + tok = strtok(tmp_str, sep_str); + while (tok != NULL) { + for (i=0; i<usb_api_backend[api].nb_driver_names; i++) { + if (safe_strcmp(tok, usb_api_backend[api].driver_name_list[i]) == 0) { + free(tmp_str); + return true; + } + } + tok = strtok(NULL, sep_str); + } + free (tmp_str); + return false; +} + +/* + * auto-claiming and auto-release helper functions + */ +static int auto_claim(struct libusb_transfer *transfer, int *interface_number, int api_type) +{ + struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); + struct windows_device_handle_priv *handle_priv = _device_handle_priv( + transfer->dev_handle); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + int current_interface = *interface_number; + int r = LIBUSB_SUCCESS; + + usbi_mutex_lock(&autoclaim_lock); + if (current_interface < 0) // No serviceable interface was found + { + for (current_interface=0; current_interface<USB_MAXINTERFACES; current_interface++) { + // Must claim an interface of the same API type + if ( (priv->usb_interface[current_interface].apib->id == api_type) + && (libusb_claim_interface(transfer->dev_handle, current_interface) == LIBUSB_SUCCESS) ) { + usbi_dbg("auto-claimed interface %d for control request", current_interface); + if (handle_priv->autoclaim_count[current_interface] != 0) { + usbi_warn(ctx, "program assertion failed - autoclaim_count was nonzero"); + } + handle_priv->autoclaim_count[current_interface]++; + break; + } + } + if (current_interface == USB_MAXINTERFACES) { + usbi_err(ctx, "could not auto-claim any interface"); + r = LIBUSB_ERROR_NOT_FOUND; + } + } else { + // If we have a valid interface that was autoclaimed, we must increment + // its autoclaim count so that we can prevent an early release. + if (handle_priv->autoclaim_count[current_interface] != 0) { + handle_priv->autoclaim_count[current_interface]++; + } + } + usbi_mutex_unlock(&autoclaim_lock); + + *interface_number = current_interface; + return r; + +} + +static void auto_release(struct usbi_transfer *itransfer) +{ + struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + libusb_device_handle *dev_handle = transfer->dev_handle; + struct windows_device_handle_priv* handle_priv = _device_handle_priv(dev_handle); + int r; + + usbi_mutex_lock(&autoclaim_lock); + if (handle_priv->autoclaim_count[transfer_priv->interface_number] > 0) { + handle_priv->autoclaim_count[transfer_priv->interface_number]--; + if (handle_priv->autoclaim_count[transfer_priv->interface_number] == 0) { + r = libusb_release_interface(dev_handle, transfer_priv->interface_number); + if (r == LIBUSB_SUCCESS) { + usbi_dbg("auto-released interface %d", transfer_priv->interface_number); + } else { + usbi_dbg("failed to auto-release interface %d (%s)", + transfer_priv->interface_number, libusb_error_name((enum libusb_error)r)); + } + } + } + usbi_mutex_unlock(&autoclaim_lock); +} + +/* + * init: libusb backend init function + * + * This function enumerates the HCDs (Host Controller Drivers) and populates our private HCD list + * In our implementation, we equate Windows' "HCD" to LibUSB's "bus". Note that bus is zero indexed. + * HCDs are not expected to change after init (might not hold true for hot pluggable USB PCI card?) + */ +static int windows_init(struct libusb_context *ctx) +{ + int i, r = LIBUSB_ERROR_OTHER; + OSVERSIONINFO os_version; + HANDLE semaphore; + char sem_name[11+1+8]; // strlen(libusb_init)+'\0'+(32-bit hex PID) + + sprintf(sem_name, "libusb_init%08X", (unsigned int)GetCurrentProcessId()&0xFFFFFFFF); + semaphore = CreateSemaphoreA(NULL, 1, 1, sem_name); + if (semaphore == NULL) { + usbi_err(ctx, "could not create semaphore: %s", windows_error_str(0)); + return LIBUSB_ERROR_NO_MEM; + } + + // A successful wait brings our semaphore count to 0 (unsignaled) + // => any concurent wait stalls until the semaphore's release + if (WaitForSingleObject(semaphore, INFINITE) != WAIT_OBJECT_0) { + usbi_err(ctx, "failure to access semaphore: %s", windows_error_str(0)); + CloseHandle(semaphore); + return LIBUSB_ERROR_NO_MEM; + } + + // NB: concurrent usage supposes that init calls are equally balanced with + // exit calls. If init is called more than exit, we will not exit properly + if ( ++concurrent_usage == 0 ) { // First init? + // Detect OS version + memset(&os_version, 0, sizeof(OSVERSIONINFO)); + os_version.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); + windows_version = WINDOWS_UNSUPPORTED; + if ((GetVersionEx(&os_version) != 0) && (os_version.dwPlatformId == VER_PLATFORM_WIN32_NT)) { + if ((os_version.dwMajorVersion == 5) && (os_version.dwMinorVersion == 1)) { + windows_version = WINDOWS_XP; + } else if ((os_version.dwMajorVersion == 5) && (os_version.dwMinorVersion == 2)) { + windows_version = WINDOWS_2003; // also includes XP 64 + } else if (os_version.dwMajorVersion >= 6) { + windows_version = WINDOWS_VISTA_AND_LATER; + } + } + if (windows_version == WINDOWS_UNSUPPORTED) { + usbi_err(ctx, "This version of Windows is NOT supported"); + r = LIBUSB_ERROR_NOT_SUPPORTED; + goto init_exit; + } + + // We need a lock for proper auto-release + usbi_mutex_init(&autoclaim_lock, NULL); + + // Initialize pollable file descriptors + init_polling(); + + // Load DLL imports + if (init_dlls() != LIBUSB_SUCCESS) { + usbi_err(ctx, "could not resolve DLL functions"); + return LIBUSB_ERROR_NOT_FOUND; + } + + // Initialize the low level APIs (we don't care about errors at this stage) + for (i=0; i<USB_API_MAX; i++) { + usb_api_backend[i].init(ctx); + } + + // Because QueryPerformanceCounter might report different values when + // running on different cores, we create a separate thread for the timer + // calls, which we glue to the first core always to prevent timing discrepancies. + r = LIBUSB_ERROR_NO_MEM; + for (i = 0; i < 2; i++) { + timer_request[i] = CreateEvent(NULL, TRUE, FALSE, NULL); + if (timer_request[i] == NULL) { + usbi_err(ctx, "could not create timer request event %d - aborting", i); + goto init_exit; + } + } + timer_response = CreateSemaphore(NULL, 0, MAX_TIMER_SEMAPHORES, NULL); + if (timer_response == NULL) { + usbi_err(ctx, "could not create timer response semaphore - aborting"); + goto init_exit; + } + timer_mutex = CreateMutex(NULL, FALSE, NULL); + if (timer_mutex == NULL) { + usbi_err(ctx, "could not create timer mutex - aborting"); + goto init_exit; + } + timer_thread = (HANDLE)_beginthreadex(NULL, 0, windows_clock_gettime_threaded, NULL, 0, NULL); + if (timer_thread == NULL) { + usbi_err(ctx, "Unable to create timer thread - aborting"); + goto init_exit; + } + SetThreadAffinityMask(timer_thread, 0); + + // Create a hash table to store session ids. Second parameter is better if prime + htab_create(ctx, HTAB_SIZE); + } + // At this stage, either we went through full init successfully, or didn't need to + r = LIBUSB_SUCCESS; + +init_exit: // Holds semaphore here. + if (!concurrent_usage && r != LIBUSB_SUCCESS) { // First init failed? + if (timer_thread) { + SetEvent(timer_request[1]); // actually the signal to quit the thread. + if (WAIT_OBJECT_0 != WaitForSingleObject(timer_thread, INFINITE)) { + usbi_warn(ctx, "could not wait for timer thread to quit"); + TerminateThread(timer_thread, 1); // shouldn't happen, but we're destroying + // all objects it might have held anyway. + } + CloseHandle(timer_thread); + timer_thread = NULL; + } + for (i = 0; i < 2; i++) { + if (timer_request[i]) { + CloseHandle(timer_request[i]); + timer_request[i] = NULL; + } + } + if (timer_response) { + CloseHandle(timer_response); + timer_response = NULL; + } + if (timer_mutex) { + CloseHandle(timer_mutex); + timer_mutex = NULL; + } + htab_destroy(); + } + + if (r != LIBUSB_SUCCESS) + --concurrent_usage; // Not expected to call libusb_exit if we failed. + + ReleaseSemaphore(semaphore, 1, NULL); // increase count back to 1 + CloseHandle(semaphore); + return r; +} + +/* + * HCD (root) hubs need to have their device descriptor manually populated + * + * Note that, like Microsoft does in the device manager, we populate the + * Vendor and Device ID for HCD hubs with the ones from the PCI HCD device. + */ +static int force_hcd_device_descriptor(struct libusb_device *dev) +{ + struct windows_device_priv *parent_priv, *priv = _device_priv(dev); + struct libusb_context *ctx = DEVICE_CTX(dev); + int vid, pid; + + dev->num_configurations = 1; + priv->dev_descriptor.bLength = sizeof(USB_DEVICE_DESCRIPTOR); + priv->dev_descriptor.bDescriptorType = USB_DEVICE_DESCRIPTOR_TYPE; + priv->dev_descriptor.bNumConfigurations = 1; + priv->active_config = 1; + + if (priv->parent_dev == NULL) { + usbi_err(ctx, "program assertion failed - HCD hub has no parent"); + return LIBUSB_ERROR_NO_DEVICE; + } + parent_priv = _device_priv(priv->parent_dev); + if (sscanf(parent_priv->path, "\\\\.\\PCI#VEN_%04x&DEV_%04x%*s", &vid, &pid) == 2) { + priv->dev_descriptor.idVendor = (uint16_t)vid; + priv->dev_descriptor.idProduct = (uint16_t)pid; + } else { + usbi_warn(ctx, "could not infer VID/PID of HCD hub from '%s'", parent_priv->path); + priv->dev_descriptor.idVendor = 0x1d6b; // Linux Foundation root hub + priv->dev_descriptor.idProduct = 1; + } + return LIBUSB_SUCCESS; +} + +/* + * fetch and cache all the config descriptors through I/O + */ +static int cache_config_descriptors(struct libusb_device *dev, HANDLE hub_handle, char* device_id) +{ + DWORD size, ret_size; + struct libusb_context *ctx = DEVICE_CTX(dev); + struct windows_device_priv *priv = _device_priv(dev); + int r; + uint8_t i; + + USB_CONFIGURATION_DESCRIPTOR_SHORT cd_buf_short; // dummy request + PUSB_DESCRIPTOR_REQUEST cd_buf_actual = NULL; // actual request + PUSB_CONFIGURATION_DESCRIPTOR cd_data = NULL; + + if (dev->num_configurations == 0) + return LIBUSB_ERROR_INVALID_PARAM; + + priv->config_descriptor = (unsigned char**) calloc(dev->num_configurations, sizeof(PUSB_CONFIGURATION_DESCRIPTOR)); + if (priv->config_descriptor == NULL) + return LIBUSB_ERROR_NO_MEM; + for (i=0; i<dev->num_configurations; i++) + priv->config_descriptor[i] = NULL; + + for (i=0, r=LIBUSB_SUCCESS; ; i++) + { + // safe loop: release all dynamic resources + safe_free(cd_buf_actual); + + // safe loop: end of loop condition + if ((i >= dev->num_configurations) || (r != LIBUSB_SUCCESS)) + break; + + size = sizeof(USB_CONFIGURATION_DESCRIPTOR_SHORT); + memset(&cd_buf_short, 0, size); + + cd_buf_short.req.ConnectionIndex = (ULONG)priv->port; + cd_buf_short.req.SetupPacket.bmRequest = LIBUSB_ENDPOINT_IN; + cd_buf_short.req.SetupPacket.bRequest = USB_REQUEST_GET_DESCRIPTOR; + cd_buf_short.req.SetupPacket.wValue = (USB_CONFIGURATION_DESCRIPTOR_TYPE << 8) | i; + cd_buf_short.req.SetupPacket.wIndex = i; + cd_buf_short.req.SetupPacket.wLength = (USHORT)(size - sizeof(USB_DESCRIPTOR_REQUEST)); + + // Dummy call to get the required data size + if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, &cd_buf_short, size, + &cd_buf_short, size, &ret_size, NULL)) { + usbi_err(ctx, "could not access configuration descriptor (dummy) for '%s': %s", device_id, windows_error_str(0)); + LOOP_BREAK(LIBUSB_ERROR_IO); + } + + if ((ret_size != size) || (cd_buf_short.data.wTotalLength < sizeof(USB_CONFIGURATION_DESCRIPTOR))) { + usbi_err(ctx, "unexpected configuration descriptor size (dummy) for '%s'.", device_id); + LOOP_BREAK(LIBUSB_ERROR_IO); + } + + size = sizeof(USB_DESCRIPTOR_REQUEST) + cd_buf_short.data.wTotalLength; + if ((cd_buf_actual = (PUSB_DESCRIPTOR_REQUEST) calloc(1, size)) == NULL) { + usbi_err(ctx, "could not allocate configuration descriptor buffer for '%s'.", device_id); + LOOP_BREAK(LIBUSB_ERROR_NO_MEM); + } + memset(cd_buf_actual, 0, size); + + // Actual call + cd_buf_actual->ConnectionIndex = (ULONG)priv->port; + cd_buf_actual->SetupPacket.bmRequest = LIBUSB_ENDPOINT_IN; + cd_buf_actual->SetupPacket.bRequest = USB_REQUEST_GET_DESCRIPTOR; + cd_buf_actual->SetupPacket.wValue = (USB_CONFIGURATION_DESCRIPTOR_TYPE << 8) | i; + cd_buf_actual->SetupPacket.wIndex = i; + cd_buf_actual->SetupPacket.wLength = (USHORT)(size - sizeof(USB_DESCRIPTOR_REQUEST)); + + if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, cd_buf_actual, size, + cd_buf_actual, size, &ret_size, NULL)) { + usbi_err(ctx, "could not access configuration descriptor (actual) for '%s': %s", device_id, windows_error_str(0)); + LOOP_BREAK(LIBUSB_ERROR_IO); + } + + cd_data = (PUSB_CONFIGURATION_DESCRIPTOR)((UCHAR*)cd_buf_actual+sizeof(USB_DESCRIPTOR_REQUEST)); + + if ((size != ret_size) || (cd_data->wTotalLength != cd_buf_short.data.wTotalLength)) { + usbi_err(ctx, "unexpected configuration descriptor size (actual) for '%s'.", device_id); + LOOP_BREAK(LIBUSB_ERROR_IO); + } + + if (cd_data->bDescriptorType != USB_CONFIGURATION_DESCRIPTOR_TYPE) { + usbi_err(ctx, "not a configuration descriptor for '%s'", device_id); + LOOP_BREAK(LIBUSB_ERROR_IO); + } + + usbi_dbg("cached config descriptor %d (bConfigurationValue=%d, %d bytes)", + i, cd_data->bConfigurationValue, cd_data->wTotalLength); + + // Cache the descriptor + priv->config_descriptor[i] = (unsigned char*) calloc(1, cd_data->wTotalLength); + if (priv->config_descriptor[i] == NULL) + return LIBUSB_ERROR_NO_MEM; + memcpy(priv->config_descriptor[i], cd_data, cd_data->wTotalLength); + } + return LIBUSB_SUCCESS; +} + +/* + * Populate a libusb device structure + */ +static int init_device(struct libusb_device* dev, struct libusb_device* parent_dev, + uint8_t port_number, char* device_id, DWORD devinst) +{ + HANDLE handle; + DWORD size; + USB_NODE_CONNECTION_INFORMATION_EX conn_info; + struct windows_device_priv *priv, *parent_priv; + struct libusb_context *ctx = DEVICE_CTX(dev); + struct libusb_device* tmp_dev; + unsigned i; + + if ((dev == NULL) || (parent_dev == NULL)) { + return LIBUSB_ERROR_NOT_FOUND; + } + priv = _device_priv(dev); + parent_priv = _device_priv(parent_dev); + if (parent_priv->apib->id != USB_API_HUB) { + usbi_warn(ctx, "parent for device '%s' is not a hub", device_id); + return LIBUSB_ERROR_NOT_FOUND; + } + + // It is possible for the parent hub not to have been initialized yet + // If that's the case, lookup the ancestors to set the bus number + if (parent_dev->bus_number == 0) { + for (i=2; ; i++) { + tmp_dev = usbi_get_device_by_session_id(ctx, get_ancestor_session_id(devinst, i)); + if (tmp_dev == NULL) break; + if (tmp_dev->bus_number != 0) { + usbi_dbg("got bus number from ancestor #%d", i); + parent_dev->bus_number = tmp_dev->bus_number; + break; + } + } + } + if (parent_dev->bus_number == 0) { + usbi_err(ctx, "program assertion failed: unable to find ancestor bus number for '%s'", device_id); + return LIBUSB_ERROR_NOT_FOUND; + } + dev->bus_number = parent_dev->bus_number; + priv->port = port_number; + priv->depth = parent_priv->depth + 1; + priv->parent_dev = parent_dev; + + // If the device address is already set, we can stop here + if (dev->device_address != 0) { + return LIBUSB_SUCCESS; + } + memset(&conn_info, 0, sizeof(conn_info)); + if (priv->depth != 0) { // Not a HCD hub + handle = CreateFileA(parent_priv->path, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, + FILE_FLAG_OVERLAPPED, NULL); + if (handle == INVALID_HANDLE_VALUE) { + usbi_warn(ctx, "could not open hub %s: %s", parent_priv->path, windows_error_str(0)); + return LIBUSB_ERROR_ACCESS; + } + size = sizeof(conn_info); + conn_info.ConnectionIndex = (ULONG)port_number; + if (!DeviceIoControl(handle, IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX, &conn_info, size, + &conn_info, size, &size, NULL)) { + usbi_warn(ctx, "could not get node connection information for device '%s': %s", + device_id, windows_error_str(0)); + safe_closehandle(handle); + return LIBUSB_ERROR_NO_DEVICE; + } + if (conn_info.ConnectionStatus == NoDeviceConnected) { + usbi_err(ctx, "device '%s' is no longer connected!", device_id); + safe_closehandle(handle); + return LIBUSB_ERROR_NO_DEVICE; + } + memcpy(&priv->dev_descriptor, &(conn_info.DeviceDescriptor), sizeof(USB_DEVICE_DESCRIPTOR)); + dev->num_configurations = priv->dev_descriptor.bNumConfigurations; + priv->active_config = conn_info.CurrentConfigurationValue; + usbi_dbg("found %d configurations (active conf: %d)", dev->num_configurations, priv->active_config); + // If we can't read the config descriptors, just set the number of confs to zero + if (cache_config_descriptors(dev, handle, device_id) != LIBUSB_SUCCESS) { + dev->num_configurations = 0; + priv->dev_descriptor.bNumConfigurations = 0; + } + safe_closehandle(handle); + + if (conn_info.DeviceAddress > UINT8_MAX) { + usbi_err(ctx, "program assertion failed: device address overflow"); + } + dev->device_address = (uint8_t)conn_info.DeviceAddress; + switch (conn_info.Speed) { + case 0: dev->speed = LIBUSB_SPEED_LOW; break; + case 1: dev->speed = LIBUSB_SPEED_FULL; break; + case 2: dev->speed = LIBUSB_SPEED_HIGH; break; + case 3: dev->speed = LIBUSB_SPEED_SUPER; break; + default: + usbi_warn(ctx, "Got unknown device speed %d", conn_info.Speed); + break; + } + } else { + dev->device_address = UINT8_MAX; // Hubs from HCD have a devaddr of 255 + force_hcd_device_descriptor(dev); + } + + usbi_dbg("(bus: %d, addr: %d, depth: %d, port: %d): '%s'", + dev->bus_number, dev->device_address, priv->depth, priv->port, device_id); + + return LIBUSB_SUCCESS; +} + +// Returns the api type, or 0 if not found/unsupported +static uint8_t get_api_type(struct libusb_context *ctx, + HDEVINFO *dev_info, SP_DEVINFO_DATA *dev_info_data) +{ + // Precedence for filter drivers vs driver is in the order of this array + struct driver_lookup lookup[3] = { + {"\0\0", SPDRP_SERVICE, "driver"}, + {"\0\0", SPDRP_UPPERFILTERS, "upper filter driver"}, + {"\0\0", SPDRP_LOWERFILTERS, "lower filter driver"} + }; + DWORD size, reg_type; + unsigned k, l; + uint8_t api; + + // Check the service & filter names to know the API we should use + for (k=0; k<3; k++) { + if (pSetupDiGetDeviceRegistryPropertyA(*dev_info, dev_info_data, lookup[k].reg_prop, + ®_type, (BYTE*)lookup[k].list, MAX_KEY_LENGTH, &size)) { + // Turn the REG_SZ SPDRP_SERVICE into REG_MULTI_SZ + if (lookup[k].reg_prop == SPDRP_SERVICE) { + // our buffers are MAX_KEY_LENGTH+1 so we can overflow if needed + lookup[k].list[safe_strlen(lookup[k].list)+1] = 0; + } + // MULTI_SZ is a pain to work with. Turn it into something much more manageable + // NB: none of the driver names we check against contain LIST_SEPARATOR, + // (currently ';'), so even if an unsuported one does, it's not an issue + for (l=0; (lookup[k].list[l] != 0) || (lookup[k].list[l+1] != 0); l++) { + if (lookup[k].list[l] == 0) { + lookup[k].list[l] = LIST_SEPARATOR; + } + } + upperize(lookup[k].list); + usbi_dbg("%s(s): %s", lookup[k].designation, lookup[k].list); + } else { + if (GetLastError() != ERROR_INVALID_DATA) { + usbi_dbg("could not access %s: %s", lookup[k].designation, windows_error_str(0)); + } + lookup[k].list[0] = 0; + } + } + + for (api=1; api<USB_API_MAX; api++) { + for (k=0; k<3; k++) { + if (is_api_driver(lookup[k].list, api)) { + usbi_dbg("matched %s name against %s", lookup[k].designation, usb_api_backend[api].designation); + break; + } + } + if (k >= 3) continue; + return api; + } + return 0; +} + +static int set_composite_interface(struct libusb_context* ctx, struct libusb_device* dev, + char* dev_interface_path, char* device_id, uint8_t api) +{ + unsigned i; + struct windows_device_priv *priv = _device_priv(dev); + int interface_number; + + if (priv->apib->id != USB_API_COMPOSITE) { + usbi_err(ctx, "program assertion failed: '%s' is not composite", device_id); + return LIBUSB_ERROR_NO_DEVICE; + } + + // Because MI_## are not necessarily in sequential order (some composite + // devices will have only MI_00 & MI_03 for instance), we retrieve the actual + // interface number from the path's MI value + interface_number = 0; + for (i=0; device_id[i] != 0; ) { + if ( (device_id[i++] == 'M') && (device_id[i++] == 'I') + && (device_id[i++] == '_') ) { + interface_number = (device_id[i++] - '0')*10; + interface_number += device_id[i] - '0'; + break; + } + } + + if (device_id[i] == 0) { + usbi_warn(ctx, "failure to read interface number for %s. Using default value %d", + device_id, interface_number); + } + + if (priv->usb_interface[interface_number].path != NULL) { + usbi_warn(ctx, "interface[%d] already set - ignoring: %s", interface_number, device_id); + return LIBUSB_ERROR_ACCESS; + } + + usbi_dbg("interface[%d] = %s", interface_number, dev_interface_path); + priv->usb_interface[interface_number].path = dev_interface_path; + priv->usb_interface[interface_number].apib = &usb_api_backend[api]; + priv->composite_api_flags |= 1<<api; + + return LIBUSB_SUCCESS; +} + +/* + * get_device_list: libusb backend device enumeration function + */ +static int windows_get_device_list(struct libusb_context *ctx, struct discovered_devs **_discdevs) +{ + struct discovered_devs *discdevs; + HDEVINFO dev_info = { 0 }; + char* usb_class[2] = {"USB", "NUSB3"}; + SP_DEVINFO_DATA dev_info_data; + SP_DEVICE_INTERFACE_DETAIL_DATA_A *dev_interface_details = NULL; +#define MAX_ENUM_GUIDS 64 + const GUID* guid[MAX_ENUM_GUIDS]; +#define HCD_PASS 0 +#define HUB_PASS 1 +#define GEN_PASS 2 +#define DEV_PASS 3 + int r = LIBUSB_SUCCESS; + int class_index = 0; + unsigned int nb_guids, pass, i, j, ancestor; + char path[MAX_PATH_LENGTH]; + char strbuf[MAX_PATH_LENGTH]; + struct libusb_device *dev, *parent_dev; + struct windows_device_priv *priv, *parent_priv; + char* dev_interface_path = NULL; + char* dev_id_path = NULL; + unsigned long session_id; + DWORD size, reg_type, port_nr, install_state; + BOOL b = FALSE; + HKEY key; + WCHAR guid_string_w[MAX_GUID_STRING_LENGTH]; + GUID* if_guid; + LONG s; + uint8_t api; + // Keep a list of newly allocated devs to unref + libusb_device** unref_list; + unsigned int unref_size = 64; + unsigned int unref_cur = 0; + + // PASS 1 : (re)enumerate HCDs (allows for HCD hotplug) + // PASS 2 : (re)enumerate HUBS + // PASS 3 : (re)enumerate generic USB devices (including driverless) + // and list additional USB device interface GUIDs to explore + // PASS 4 : (re)enumerate master USB devices that have a device interface + // PASS 5+: (re)enumerate device interfaced GUIDs and set the device interfaces. + + // Init the GUID table + guid[HCD_PASS] = &GUID_DEVINTERFACE_USB_HOST_CONTROLLER; + guid[HUB_PASS] = &GUID_DEVINTERFACE_USB_HUB; + guid[GEN_PASS] = NULL; + guid[DEV_PASS] = &GUID_DEVINTERFACE_USB_DEVICE; + nb_guids = DEV_PASS+1; + + unref_list = (libusb_device**) calloc(unref_size, sizeof(libusb_device*)); + if (unref_list == NULL) { + return LIBUSB_ERROR_NO_MEM; + } + + for (pass = 0; ((pass < nb_guids) && (r == LIBUSB_SUCCESS)); pass++) { +//#define ENUM_DEBUG +#ifdef ENUM_DEBUG + switch(pass) { + case HCD_PASS: + usbi_dbg("PROCESSING HCDs %s", guid_to_string(guid[pass])); + break; + case HUB_PASS: + usbi_dbg("PROCESSING HUBs %s", guid_to_string(guid[pass])); + break; + case DEV_PASS: + usbi_dbg("PROCESSING DEVs %s", guid_to_string(guid[pass])); + break; + case GEN_PASS: + usbi_dbg("PROCESSING GENs"); + break; + default: + usbi_dbg("PROCESSING EXTs %s", guid_to_string(guid[pass])); + break; + } +#endif + for (i = 0; ; i++) { + // safe loop: free up any (unprotected) dynamic resource + // NB: this is always executed before breaking the loop + safe_free(dev_interface_details); + safe_free(dev_interface_path); + safe_free(dev_id_path); + priv = parent_priv = NULL; + dev = parent_dev = NULL; + + // Safe loop: end of loop conditions + if (r != LIBUSB_SUCCESS) { + break; + } + if ((pass == HCD_PASS) && (i == UINT8_MAX)) { + usbi_warn(ctx, "program assertion failed - found more than %d buses, skipping the rest.", UINT8_MAX); + break; + } + if (pass != GEN_PASS) { + // Except for GEN, all passes deal with device interfaces + dev_interface_details = get_interface_details(ctx, &dev_info, &dev_info_data, guid[pass], i); + if (dev_interface_details == NULL) { + break; + } else { + dev_interface_path = sanitize_path(dev_interface_details->DevicePath); + if (dev_interface_path == NULL) { + usbi_warn(ctx, "could not sanitize device interface path for '%s'", dev_interface_details->DevicePath); + continue; + } + } + } else { + // Workaround for a Nec/Renesas USB 3.0 driver bug where root hubs are + // being listed under the "NUSB3" PnP Symbolic Name rather than "USB" + while ( (class_index < 2) && + (!(b = get_devinfo_data(ctx, &dev_info, &dev_info_data, usb_class[class_index], i))) ) { + class_index++; + i = 0; + } + if (!b) break; + } + + // Read the Device ID path. This is what we'll use as UID + // Note that if the device is plugged in a different port or hub, the Device ID changes + if (CM_Get_Device_IDA(dev_info_data.DevInst, path, sizeof(path), 0) != CR_SUCCESS) { + usbi_warn(ctx, "could not read the device id path for devinst %X, skipping", + dev_info_data.DevInst); + continue; + } + dev_id_path = sanitize_path(path); + if (dev_id_path == NULL) { + usbi_warn(ctx, "could not sanitize device id path for devinst %X, skipping", + dev_info_data.DevInst); + continue; + } +#ifdef ENUM_DEBUG + usbi_dbg("PRO: %s", dev_id_path); +#endif + + // The SPDRP_ADDRESS for USB devices is the device port number on the hub + port_nr = 0; + if ((pass >= HUB_PASS) && (pass <= GEN_PASS)) { + if ( (!pSetupDiGetDeviceRegistryPropertyA(dev_info, &dev_info_data, SPDRP_ADDRESS, + ®_type, (BYTE*)&port_nr, 4, &size)) + || (size != 4) ) { + usbi_warn(ctx, "could not retrieve port number for device '%s', skipping: %s", + dev_id_path, windows_error_str(0)); + continue; + } + } + + // Set API to use or get additional data from generic pass + api = USB_API_UNSUPPORTED; + switch (pass) { + case HCD_PASS: + break; + case GEN_PASS: + // We use the GEN pass to detect driverless devices... + size = sizeof(strbuf); + if (!pSetupDiGetDeviceRegistryPropertyA(dev_info, &dev_info_data, SPDRP_DRIVER, + ®_type, (BYTE*)strbuf, size, &size)) { + usbi_info(ctx, "The following device has no driver: '%s'", dev_id_path); + usbi_info(ctx, "libusb will not be able to access it."); + } + // ...and to add the additional device interface GUIDs + key = pSetupDiOpenDevRegKey(dev_info, &dev_info_data, DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_READ); + if (key != INVALID_HANDLE_VALUE) { + size = sizeof(guid_string_w); + s = pRegQueryValueExW(key, L"DeviceInterfaceGUIDs", NULL, ®_type, + (BYTE*)guid_string_w, &size); + pRegCloseKey(key); + if (s == ERROR_SUCCESS) { + if (nb_guids >= MAX_ENUM_GUIDS) { + // If this assert is ever reported, grow a GUID table dynamically + usbi_err(ctx, "program assertion failed: too many GUIDs"); + LOOP_BREAK(LIBUSB_ERROR_OVERFLOW); + } + if_guid = (GUID*) calloc(1, sizeof(GUID)); + pCLSIDFromString(guid_string_w, if_guid); + guid[nb_guids++] = if_guid; + usbi_dbg("extra GUID: %s", guid_to_string(if_guid)); + } + } + break; + default: + // Get the API type (after checking that the driver installation is OK) + if ( (!pSetupDiGetDeviceRegistryPropertyA(dev_info, &dev_info_data, SPDRP_INSTALL_STATE, + ®_type, (BYTE*)&install_state, 4, &size)) + || (size != 4) ){ + usbi_warn(ctx, "could not detect installation state of driver for '%s': %s", + dev_id_path, windows_error_str(0)); + } else if (install_state != 0) { + usbi_warn(ctx, "driver for device '%s' is reporting an issue (code: %d) - skipping", + dev_id_path, install_state); + continue; + } + api = get_api_type(ctx, &dev_info, &dev_info_data); + break; + } + + // Find parent device (for the passes that need it) + switch (pass) { + case HCD_PASS: + case DEV_PASS: + case HUB_PASS: + break; + default: + // Go through the ancestors until we see a face we recognize + parent_dev = NULL; + for (ancestor = 1; parent_dev == NULL; ancestor++) { + session_id = get_ancestor_session_id(dev_info_data.DevInst, ancestor); + if (session_id == 0) { + break; + } + parent_dev = usbi_get_device_by_session_id(ctx, session_id); + } + if (parent_dev == NULL) { + usbi_dbg("unlisted ancestor for '%s' (newly connected, etc.) - ignoring", dev_id_path); + continue; + } + parent_priv = _device_priv(parent_dev); + // virtual USB devices are also listed during GEN - don't process these yet + if ( (pass == GEN_PASS) && (parent_priv->apib->id != USB_API_HUB) ) { + continue; + } + break; + } + + // Create new or match existing device, using the (hashed) device_id as session id + if (pass <= DEV_PASS) { // For subsequent passes, we'll lookup the parent + // These are the passes that create "new" devices + session_id = htab_hash(dev_id_path); + dev = usbi_get_device_by_session_id(ctx, session_id); + if (dev == NULL) { + if (pass == DEV_PASS) { + // This can occur if the OS only reports a newly plugged device after we started enum + usbi_warn(ctx, "'%s' was only detected in late pass (newly connected device?)" + " - ignoring", dev_id_path); + continue; + } + usbi_dbg("allocating new device for session [%X]", session_id); + if ((dev = usbi_alloc_device(ctx, session_id)) == NULL) { + LOOP_BREAK(LIBUSB_ERROR_NO_MEM); + } + windows_device_priv_init(dev); + // Keep track of devices that need unref + unref_list[unref_cur++] = dev; + if (unref_cur >= unref_size) { + unref_size += 64; + unref_list = realloc(unref_list, unref_size*sizeof(libusb_device*)); + if (unref_list == NULL) { + usbi_err(ctx, "could not realloc list for unref - aborting."); + LOOP_BREAK(LIBUSB_ERROR_NO_MEM); + } + } + } else { + usbi_dbg("found existing device for session [%X] (%d.%d)", + session_id, dev->bus_number, dev->device_address); + } + priv = _device_priv(dev); + } + + // Setup device + switch (pass) { + case HCD_PASS: + dev->bus_number = (uint8_t)(i + 1); // bus 0 is reserved for disconnected + dev->device_address = 0; + dev->num_configurations = 0; + priv->apib = &usb_api_backend[USB_API_HUB]; + priv->depth = UINT8_MAX; // Overflow to 0 for HCD Hubs + priv->path = dev_interface_path; dev_interface_path = NULL; + break; + case HUB_PASS: + case DEV_PASS: + // If the device has already been setup, don't do it again + if (priv->path != NULL) + break; + // Take care of API initialization + priv->path = dev_interface_path; dev_interface_path = NULL; + priv->apib = &usb_api_backend[api]; + switch(api) { + case USB_API_COMPOSITE: + case USB_API_HUB: + break; + default: + // For other devices, the first interface is the same as the device + priv->usb_interface[0].path = (char*) calloc(safe_strlen(priv->path)+1, 1); + if (priv->usb_interface[0].path != NULL) { + safe_strcpy(priv->usb_interface[0].path, safe_strlen(priv->path)+1, priv->path); + } else { + usbi_warn(ctx, "could not duplicate interface path '%s'", priv->path); + } + // The following is needed if we want API calls to work for both simple + // and composite devices. + for(j=0; j<USB_MAXINTERFACES; j++) { + priv->usb_interface[j].apib = &usb_api_backend[api]; + } + break; + } + break; + case GEN_PASS: + r = init_device(dev, parent_dev, (uint8_t)port_nr, dev_id_path, dev_info_data.DevInst); + if (r == LIBUSB_SUCCESS) { + // Append device to the list of discovered devices + discdevs = discovered_devs_append(*_discdevs, dev); + if (!discdevs) { + LOOP_BREAK(LIBUSB_ERROR_NO_MEM); + } + *_discdevs = discdevs; + } else if (r == LIBUSB_ERROR_NO_DEVICE) { + // This can occur if the device was disconnected but Windows hasn't + // refreshed its enumeration yet - in that case, we ignore the device + r = LIBUSB_SUCCESS; + } + break; + default: // later passes + if (parent_priv->apib->id == USB_API_COMPOSITE) { + usbi_dbg("setting composite interface for [%lX]:", parent_dev->session_data); + switch (set_composite_interface(ctx, parent_dev, dev_interface_path, dev_id_path, api)) { + case LIBUSB_SUCCESS: + dev_interface_path = NULL; + break; + case LIBUSB_ERROR_ACCESS: + // interface has already been set => make sure dev_interface_path is freed then + break; + default: + LOOP_BREAK(r); + break; + } + } + break; + } + } + } + + // Free any additional GUIDs + for (pass = DEV_PASS+1; pass < nb_guids; pass++) { + safe_free(guid[pass]); + } + + // Unref newly allocated devs + for (i=0; i<unref_cur; i++) { + safe_unref_device(unref_list[i]); + } + safe_free(unref_list); + + return r; +} + +/* + * exit: libusb backend deinitialization function + */ +static void windows_exit(void) +{ + int i; + HANDLE semaphore; + char sem_name[11+1+8]; // strlen(libusb_init)+'\0'+(32-bit hex PID) + + sprintf(sem_name, "libusb_init%08X", (unsigned int)GetCurrentProcessId()&0xFFFFFFFF); + semaphore = CreateSemaphoreA(NULL, 1, 1, sem_name); + if (semaphore == NULL) { + return; + } + + // A successful wait brings our semaphore count to 0 (unsignaled) + // => any concurent wait stalls until the semaphore release + if (WaitForSingleObject(semaphore, INFINITE) != WAIT_OBJECT_0) { + CloseHandle(semaphore); + return; + } + + // Only works if exits and inits are balanced exactly + if (--concurrent_usage < 0) { // Last exit + for (i=0; i<USB_API_MAX; i++) { + usb_api_backend[i].exit(); + } + exit_polling(); + + if (timer_thread) { + SetEvent(timer_request[1]); // actually the signal to quit the thread. + if (WAIT_OBJECT_0 != WaitForSingleObject(timer_thread, INFINITE)) { + usbi_dbg("could not wait for timer thread to quit"); + TerminateThread(timer_thread, 1); + } + CloseHandle(timer_thread); + timer_thread = NULL; + } + for (i = 0; i < 2; i++) { + if (timer_request[i]) { + CloseHandle(timer_request[i]); + timer_request[i] = NULL; + } + } + if (timer_response) { + CloseHandle(timer_response); + timer_response = NULL; + } + if (timer_mutex) { + CloseHandle(timer_mutex); + timer_mutex = NULL; + } + htab_destroy(); + } + + ReleaseSemaphore(semaphore, 1, NULL); // increase count back to 1 + CloseHandle(semaphore); +} + +static int windows_get_device_descriptor(struct libusb_device *dev, unsigned char *buffer, int *host_endian) +{ + struct windows_device_priv *priv = _device_priv(dev); + + memcpy(buffer, &(priv->dev_descriptor), DEVICE_DESC_LENGTH); + *host_endian = 0; + + return LIBUSB_SUCCESS; +} + +static int windows_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian) +{ + struct windows_device_priv *priv = _device_priv(dev); + PUSB_CONFIGURATION_DESCRIPTOR config_header; + size_t size; + + // config index is zero based + if (config_index >= dev->num_configurations) + return LIBUSB_ERROR_INVALID_PARAM; + + if ((priv->config_descriptor == NULL) || (priv->config_descriptor[config_index] == NULL)) + return LIBUSB_ERROR_NOT_FOUND; + + config_header = (PUSB_CONFIGURATION_DESCRIPTOR)priv->config_descriptor[config_index]; + + size = min(config_header->wTotalLength, len); + memcpy(buffer, priv->config_descriptor[config_index], size); + + return LIBUSB_SUCCESS; +} + +/* + * return the cached copy of the active config descriptor + */ +static int windows_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian) +{ + struct windows_device_priv *priv = _device_priv(dev); + + if (priv->active_config == 0) + return LIBUSB_ERROR_NOT_FOUND; + + // config index is zero based + return windows_get_config_descriptor(dev, (uint8_t)(priv->active_config-1), buffer, len, host_endian); +} + +static int windows_open(struct libusb_device_handle *dev_handle) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); + + if (priv->apib == NULL) { + usbi_err(ctx, "program assertion failed - device is not initialized"); + return LIBUSB_ERROR_NO_DEVICE; + } + + return priv->apib->open(dev_handle); +} + +static void windows_close(struct libusb_device_handle *dev_handle) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + + priv->apib->close(dev_handle); +} + +static int windows_get_configuration(struct libusb_device_handle *dev_handle, int *config) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + + if (priv->active_config == 0) { + *config = 0; + return LIBUSB_ERROR_NOT_FOUND; + } + + *config = priv->active_config; + return LIBUSB_SUCCESS; +} + +/* + * from http://msdn.microsoft.com/en-us/library/ms793522.aspx: "The port driver + * does not currently expose a service that allows higher-level drivers to set + * the configuration." + */ +static int windows_set_configuration(struct libusb_device_handle *dev_handle, int config) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + int r = LIBUSB_SUCCESS; + + if (config >= USB_MAXCONFIG) + return LIBUSB_ERROR_INVALID_PARAM; + + r = libusb_control_transfer(dev_handle, LIBUSB_ENDPOINT_OUT | + LIBUSB_REQUEST_TYPE_STANDARD | LIBUSB_RECIPIENT_DEVICE, + LIBUSB_REQUEST_SET_CONFIGURATION, (uint16_t)config, + 0, NULL, 0, 1000); + + if (r == LIBUSB_SUCCESS) { + priv->active_config = (uint8_t)config; + } + return r; +} + +static int windows_claim_interface(struct libusb_device_handle *dev_handle, int iface) +{ + int r = LIBUSB_SUCCESS; + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + + if (iface >= USB_MAXINTERFACES) + return LIBUSB_ERROR_INVALID_PARAM; + + safe_free(priv->usb_interface[iface].endpoint); + priv->usb_interface[iface].nb_endpoints= 0; + + r = priv->apib->claim_interface(dev_handle, iface); + + if (r == LIBUSB_SUCCESS) { + r = windows_assign_endpoints(dev_handle, iface, 0); + } + + return r; +} + +static int windows_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) +{ + int r = LIBUSB_SUCCESS; + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + + safe_free(priv->usb_interface[iface].endpoint); + priv->usb_interface[iface].nb_endpoints= 0; + + r = priv->apib->set_interface_altsetting(dev_handle, iface, altsetting); + + if (r == LIBUSB_SUCCESS) { + r = windows_assign_endpoints(dev_handle, iface, altsetting); + } + + return r; +} + +static int windows_release_interface(struct libusb_device_handle *dev_handle, int iface) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + + return priv->apib->release_interface(dev_handle, iface); +} + +static int windows_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + return priv->apib->clear_halt(dev_handle, endpoint); +} + +static int windows_reset_device(struct libusb_device_handle *dev_handle) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + return priv->apib->reset_device(dev_handle); +} + +// The 3 functions below are unlikely to ever get supported on Windows +static int windows_kernel_driver_active(struct libusb_device_handle *dev_handle, int iface) +{ + return LIBUSB_ERROR_NOT_SUPPORTED; +} + +static int windows_attach_kernel_driver(struct libusb_device_handle *dev_handle, int iface) +{ + return LIBUSB_ERROR_NOT_SUPPORTED; +} + +static int windows_detach_kernel_driver(struct libusb_device_handle *dev_handle, int iface) +{ + return LIBUSB_ERROR_NOT_SUPPORTED; +} + +static void windows_destroy_device(struct libusb_device *dev) +{ + windows_device_priv_release(dev); +} + +static void windows_clear_transfer_priv(struct usbi_transfer *itransfer) +{ + struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); + + usbi_free_fd(transfer_priv->pollable_fd.fd); + // When auto claim is in use, attempt to release the auto-claimed interface + auto_release(itransfer); +} + +static int submit_bulk_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); + struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + int r; + + r = priv->apib->submit_bulk_transfer(itransfer); + if (r != LIBUSB_SUCCESS) { + return r; + } + + usbi_add_pollfd(ctx, transfer_priv->pollable_fd.fd, + (short)(IS_XFERIN(transfer) ? POLLIN : POLLOUT)); + + return LIBUSB_SUCCESS; +} + +static int submit_iso_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); + struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + int r; + + r = priv->apib->submit_iso_transfer(itransfer); + if (r != LIBUSB_SUCCESS) { + return r; + } + + usbi_add_pollfd(ctx, transfer_priv->pollable_fd.fd, + (short)(IS_XFERIN(transfer) ? POLLIN : POLLOUT)); + + return LIBUSB_SUCCESS; +} + +static int submit_control_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); + struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + int r; + + r = priv->apib->submit_control_transfer(itransfer); + if (r != LIBUSB_SUCCESS) { + return r; + } + + usbi_add_pollfd(ctx, transfer_priv->pollable_fd.fd, POLLIN); + + return LIBUSB_SUCCESS; + +} + +static int windows_submit_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + + switch (transfer->type) { + case LIBUSB_TRANSFER_TYPE_CONTROL: + return submit_control_transfer(itransfer); + case LIBUSB_TRANSFER_TYPE_BULK: + case LIBUSB_TRANSFER_TYPE_INTERRUPT: + if (IS_XFEROUT(transfer) && + transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) + return LIBUSB_ERROR_NOT_SUPPORTED; + return submit_bulk_transfer(itransfer); + case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: + return submit_iso_transfer(itransfer); + default: + usbi_err(TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); + return LIBUSB_ERROR_INVALID_PARAM; + } +} + +static int windows_abort_control(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + + return priv->apib->abort_control(itransfer); +} + +static int windows_abort_transfers(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + + return priv->apib->abort_transfers(itransfer); +} + +static int windows_cancel_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + + switch (transfer->type) { + case LIBUSB_TRANSFER_TYPE_CONTROL: + return windows_abort_control(itransfer); + case LIBUSB_TRANSFER_TYPE_BULK: + case LIBUSB_TRANSFER_TYPE_INTERRUPT: + case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: + return windows_abort_transfers(itransfer); + default: + usbi_err(ITRANSFER_CTX(itransfer), "unknown endpoint type %d", transfer->type); + return LIBUSB_ERROR_INVALID_PARAM; + } +} + +static void windows_transfer_callback(struct usbi_transfer *itransfer, uint32_t io_result, uint32_t io_size) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + int status; + + usbi_dbg("handling I/O completion with errcode %d", io_result); + + switch(io_result) { + case NO_ERROR: + status = priv->apib->copy_transfer_data(itransfer, io_size); + break; + case ERROR_GEN_FAILURE: + usbi_dbg("detected endpoint stall"); + status = LIBUSB_TRANSFER_STALL; + break; + case ERROR_SEM_TIMEOUT: + usbi_dbg("detected semaphore timeout"); + status = LIBUSB_TRANSFER_TIMED_OUT; + break; + case ERROR_OPERATION_ABORTED: + if (itransfer->flags & USBI_TRANSFER_TIMED_OUT) { + usbi_dbg("detected timeout"); + status = LIBUSB_TRANSFER_TIMED_OUT; + } else { + usbi_dbg("detected operation aborted"); + status = LIBUSB_TRANSFER_CANCELLED; + } + break; + default: + usbi_err(ITRANSFER_CTX(itransfer), "detected I/O error: %s", windows_error_str(0)); + status = LIBUSB_TRANSFER_ERROR; + break; + } + windows_clear_transfer_priv(itransfer); // Cancel polling + usbi_handle_transfer_completion(itransfer, (enum libusb_transfer_status)status); +} + +static void windows_handle_callback (struct usbi_transfer *itransfer, uint32_t io_result, uint32_t io_size) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + + switch (transfer->type) { + case LIBUSB_TRANSFER_TYPE_CONTROL: + case LIBUSB_TRANSFER_TYPE_BULK: + case LIBUSB_TRANSFER_TYPE_INTERRUPT: + case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: + windows_transfer_callback (itransfer, io_result, io_size); + break; + default: + usbi_err(ITRANSFER_CTX(itransfer), "unknown endpoint type %d", transfer->type); + } +} + +static int windows_handle_events(struct libusb_context *ctx, struct pollfd *fds, POLL_NFDS_TYPE nfds, int num_ready) +{ + struct windows_transfer_priv* transfer_priv = NULL; + POLL_NFDS_TYPE i = 0; + bool found = false; + struct usbi_transfer *transfer; + DWORD io_size, io_result; + + usbi_mutex_lock(&ctx->open_devs_lock); + for (i = 0; i < nfds && num_ready > 0; i++) { + + usbi_dbg("checking fd %d with revents = %04x", fds[i].fd, fds[i].revents); + + if (!fds[i].revents) { + continue; + } + + num_ready--; + + // Because a Windows OVERLAPPED is used for poll emulation, + // a pollable fd is created and stored with each transfer + usbi_mutex_lock(&ctx->flying_transfers_lock); + list_for_each_entry(transfer, &ctx->flying_transfers, list, struct usbi_transfer) { + transfer_priv = usbi_transfer_get_os_priv(transfer); + if (transfer_priv->pollable_fd.fd == fds[i].fd) { + found = true; + break; + } + } + usbi_mutex_unlock(&ctx->flying_transfers_lock); + + if (found) { + // Handle async requests that completed synchronously first + if (HasOverlappedIoCompletedSync(transfer_priv->pollable_fd.overlapped)) { + io_result = NO_ERROR; + io_size = (DWORD)transfer_priv->pollable_fd.overlapped->InternalHigh; + // Regular async overlapped + } else if (GetOverlappedResult(transfer_priv->pollable_fd.handle, + transfer_priv->pollable_fd.overlapped, &io_size, false)) { + io_result = NO_ERROR; + } else { + io_result = GetLastError(); + } + usbi_remove_pollfd(ctx, transfer_priv->pollable_fd.fd); + // let handle_callback free the event using the transfer wfd + // If you don't use the transfer wfd, you run a risk of trying to free a + // newly allocated wfd that took the place of the one from the transfer. + windows_handle_callback(transfer, io_result, io_size); + } else { + usbi_err(ctx, "could not find a matching transfer for fd %x", fds[i]); + return LIBUSB_ERROR_NOT_FOUND; + } + } + + usbi_mutex_unlock(&ctx->open_devs_lock); + return LIBUSB_SUCCESS; +} + +/* + * Monotonic and real time functions + */ +unsigned __stdcall windows_clock_gettime_threaded(void* param) +{ + LARGE_INTEGER hires_counter, li_frequency; + LONG nb_responses; + int timer_index; + + // Init - find out if we have access to a monotonic (hires) timer + if (!QueryPerformanceFrequency(&li_frequency)) { + usbi_dbg("no hires timer available on this platform"); + hires_frequency = 0; + hires_ticks_to_ps = UINT64_C(0); + } else { + hires_frequency = li_frequency.QuadPart; + // The hires frequency can go as high as 4 GHz, so we'll use a conversion + // to picoseconds to compute the tv_nsecs part in clock_gettime + hires_ticks_to_ps = UINT64_C(1000000000000) / hires_frequency; + usbi_dbg("hires timer available (Frequency: %"PRIu64" Hz)", hires_frequency); + } + + // Main loop - wait for requests + while (1) { + timer_index = WaitForMultipleObjects(2, timer_request, FALSE, INFINITE) - WAIT_OBJECT_0; + if ( (timer_index != 0) && (timer_index != 1) ) { + usbi_dbg("failure to wait on requests: %s", windows_error_str(0)); + continue; + } + if (request_count[timer_index] == 0) { + // Request already handled + ResetEvent(timer_request[timer_index]); + // There's still a possiblity that a thread sends a request between the + // time we test request_count[] == 0 and we reset the event, in which case + // the request would be ignored. The simple solution to that is to test + // request_count again and process requests if non zero. + if (request_count[timer_index] == 0) + continue; + } + switch (timer_index) { + case 0: + WaitForSingleObject(timer_mutex, INFINITE); + // Requests to this thread are for hires always + if (QueryPerformanceCounter(&hires_counter) != 0) { + timer_tp.tv_sec = (long)(hires_counter.QuadPart / hires_frequency); + timer_tp.tv_nsec = (long)(((hires_counter.QuadPart % hires_frequency)/1000) * hires_ticks_to_ps); + } else { + // Fallback to real-time if we can't get monotonic value + // Note that real-time clock does not wait on the mutex or this thread. + windows_clock_gettime(USBI_CLOCK_REALTIME, &timer_tp); + } + ReleaseMutex(timer_mutex); + + nb_responses = InterlockedExchange((LONG*)&request_count[0], 0); + if ( (nb_responses) + && (ReleaseSemaphore(timer_response, nb_responses, NULL) == 0) ) { + usbi_dbg("unable to release timer semaphore %d: %s", windows_error_str(0)); + } + continue; + case 1: // time to quit + usbi_dbg("timer thread quitting"); + return 0; + } + } + usbi_dbg("ERROR: broken timer thread"); + return 1; +} + +static int windows_clock_gettime(int clk_id, struct timespec *tp) +{ + FILETIME filetime; + ULARGE_INTEGER rtime; + DWORD r; + switch(clk_id) { + case USBI_CLOCK_MONOTONIC: + if (hires_frequency != 0) { + while (1) { + InterlockedIncrement((LONG*)&request_count[0]); + SetEvent(timer_request[0]); + r = WaitForSingleObject(timer_response, TIMER_REQUEST_RETRY_MS); + switch(r) { + case WAIT_OBJECT_0: + WaitForSingleObject(timer_mutex, INFINITE); + *tp = timer_tp; + ReleaseMutex(timer_mutex); + return LIBUSB_SUCCESS; + case WAIT_TIMEOUT: + usbi_dbg("could not obtain a timer value within reasonable timeframe - too much load?"); + break; // Retry until successful + default: + usbi_dbg("WaitForSingleObject failed: %s", windows_error_str(0)); + return LIBUSB_ERROR_OTHER; + } + } + } + // Fall through and return real-time if monotonic was not detected @ timer init + case USBI_CLOCK_REALTIME: + // We follow http://msdn.microsoft.com/en-us/library/ms724928%28VS.85%29.aspx + // with a predef epoch_time to have an epoch that starts at 1970.01.01 00:00 + // Note however that our resolution is bounded by the Windows system time + // functions and is at best of the order of 1 ms (or, usually, worse) + GetSystemTimeAsFileTime(&filetime); + rtime.LowPart = filetime.dwLowDateTime; + rtime.HighPart = filetime.dwHighDateTime; + rtime.QuadPart -= epoch_time; + tp->tv_sec = (long)(rtime.QuadPart / 10000000); + tp->tv_nsec = (long)((rtime.QuadPart % 10000000)*100); + return LIBUSB_SUCCESS; + default: + return LIBUSB_ERROR_INVALID_PARAM; + } +} + + +// NB: MSVC6 does not support named initializers. +const struct usbi_os_backend windows_backend = { + "Windows", + windows_init, + windows_exit, + + windows_get_device_list, + windows_open, + windows_close, + + windows_get_device_descriptor, + windows_get_active_config_descriptor, + windows_get_config_descriptor, + + windows_get_configuration, + windows_set_configuration, + windows_claim_interface, + windows_release_interface, + + windows_set_interface_altsetting, + windows_clear_halt, + windows_reset_device, + + windows_kernel_driver_active, + windows_detach_kernel_driver, + windows_attach_kernel_driver, + + windows_destroy_device, + + windows_submit_transfer, + windows_cancel_transfer, + windows_clear_transfer_priv, + + windows_handle_events, + + windows_clock_gettime, +#if defined(USBI_TIMERFD_AVAILABLE) + NULL, +#endif + sizeof(struct windows_device_priv), + sizeof(struct windows_device_handle_priv), + sizeof(struct windows_transfer_priv), + 0, +}; + + +/* + * USB API backends + */ +static int unsupported_init(struct libusb_context *ctx) { + return LIBUSB_SUCCESS; +} +static int unsupported_exit(void) { + return LIBUSB_SUCCESS; +} +static int unsupported_open(struct libusb_device_handle *dev_handle) { + PRINT_UNSUPPORTED_API(open); +} +static void unsupported_close(struct libusb_device_handle *dev_handle) { + usbi_dbg("unsupported API call for 'close'"); +} +static int unsupported_claim_interface(struct libusb_device_handle *dev_handle, int iface) { + PRINT_UNSUPPORTED_API(claim_interface); +} +static int unsupported_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) { + PRINT_UNSUPPORTED_API(set_interface_altsetting); +} +static int unsupported_release_interface(struct libusb_device_handle *dev_handle, int iface) { + PRINT_UNSUPPORTED_API(release_interface); +} +static int unsupported_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) { + PRINT_UNSUPPORTED_API(clear_halt); +} +static int unsupported_reset_device(struct libusb_device_handle *dev_handle) { + PRINT_UNSUPPORTED_API(reset_device); +} +static int unsupported_submit_bulk_transfer(struct usbi_transfer *itransfer) { + PRINT_UNSUPPORTED_API(submit_bulk_transfer); +} +static int unsupported_submit_iso_transfer(struct usbi_transfer *itransfer) { + PRINT_UNSUPPORTED_API(submit_iso_transfer); +} +static int unsupported_submit_control_transfer(struct usbi_transfer *itransfer) { + PRINT_UNSUPPORTED_API(submit_control_transfer); +} +static int unsupported_abort_control(struct usbi_transfer *itransfer) { + PRINT_UNSUPPORTED_API(abort_control); +} +static int unsupported_abort_transfers(struct usbi_transfer *itransfer) { + PRINT_UNSUPPORTED_API(abort_transfers); +} +static int unsupported_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size) { + PRINT_UNSUPPORTED_API(copy_transfer_data); +} + +// These names must be uppercase +const char* hub_driver_names[] = {"USBHUB", "USBHUB3", "NUSB3HUB", "FLXHCIH", "TIHUB3", "ETRONHUB3", "VIAHUB3", "ASMTHUB3"}; +const char* composite_driver_names[] = {"USBCCGP"}; +const char* winusb_driver_names[] = {"WINUSB"}; +const struct windows_usb_api_backend usb_api_backend[USB_API_MAX] = { + { + USB_API_UNSUPPORTED, + "Unsupported API", + &CLASS_GUID_UNSUPPORTED, + NULL, + 0, + unsupported_init, + unsupported_exit, + unsupported_open, + unsupported_close, + unsupported_claim_interface, + unsupported_set_interface_altsetting, + unsupported_release_interface, + unsupported_clear_halt, + unsupported_reset_device, + unsupported_submit_bulk_transfer, + unsupported_submit_iso_transfer, + unsupported_submit_control_transfer, + unsupported_abort_control, + unsupported_abort_transfers, + unsupported_copy_transfer_data, + }, { + USB_API_HUB, + "HUB API", + &CLASS_GUID_UNSUPPORTED, + hub_driver_names, + sizeof(hub_driver_names)/sizeof(hub_driver_names[0]), + unsupported_init, + unsupported_exit, + unsupported_open, + unsupported_close, + unsupported_claim_interface, + unsupported_set_interface_altsetting, + unsupported_release_interface, + unsupported_clear_halt, + unsupported_reset_device, + unsupported_submit_bulk_transfer, + unsupported_submit_iso_transfer, + unsupported_submit_control_transfer, + unsupported_abort_control, + unsupported_abort_transfers, + unsupported_copy_transfer_data, + }, { + USB_API_COMPOSITE, + "Composite API", + &CLASS_GUID_COMPOSITE, + composite_driver_names, + sizeof(composite_driver_names)/sizeof(composite_driver_names[0]), + composite_init, + composite_exit, + composite_open, + composite_close, + composite_claim_interface, + composite_set_interface_altsetting, + composite_release_interface, + composite_clear_halt, + composite_reset_device, + composite_submit_bulk_transfer, + composite_submit_iso_transfer, + composite_submit_control_transfer, + composite_abort_control, + composite_abort_transfers, + composite_copy_transfer_data, + }, { + USB_API_WINUSB, + "WinUSB API", + &CLASS_GUID_LIBUSB_WINUSB, + winusb_driver_names, + sizeof(winusb_driver_names)/sizeof(winusb_driver_names[0]), + winusb_init, + winusb_exit, + winusb_open, + winusb_close, + winusb_claim_interface, + winusb_set_interface_altsetting, + winusb_release_interface, + winusb_clear_halt, + winusb_reset_device, + winusb_submit_bulk_transfer, + unsupported_submit_iso_transfer, + winusb_submit_control_transfer, + winusb_abort_control, + winusb_abort_transfers, + winusb_copy_transfer_data, + }, +}; + + +/* + * WinUSB API functions + */ +static int winusb_init(struct libusb_context *ctx) +{ + DLL_LOAD(winusb.dll, WinUsb_Initialize, TRUE); + DLL_LOAD(winusb.dll, WinUsb_Free, TRUE); + DLL_LOAD(winusb.dll, WinUsb_GetAssociatedInterface, TRUE); + DLL_LOAD(winusb.dll, WinUsb_GetDescriptor, TRUE); + DLL_LOAD(winusb.dll, WinUsb_QueryInterfaceSettings, TRUE); + DLL_LOAD(winusb.dll, WinUsb_QueryDeviceInformation, TRUE); + DLL_LOAD(winusb.dll, WinUsb_SetCurrentAlternateSetting, TRUE); + DLL_LOAD(winusb.dll, WinUsb_GetCurrentAlternateSetting, TRUE); + DLL_LOAD(winusb.dll, WinUsb_QueryPipe, TRUE); + DLL_LOAD(winusb.dll, WinUsb_SetPipePolicy, TRUE); + DLL_LOAD(winusb.dll, WinUsb_GetPipePolicy, TRUE); + DLL_LOAD(winusb.dll, WinUsb_ReadPipe, TRUE); + DLL_LOAD(winusb.dll, WinUsb_WritePipe, TRUE); + DLL_LOAD(winusb.dll, WinUsb_ControlTransfer, TRUE); + DLL_LOAD(winusb.dll, WinUsb_ResetPipe, TRUE); + DLL_LOAD(winusb.dll, WinUsb_AbortPipe, TRUE); + DLL_LOAD(winusb.dll, WinUsb_FlushPipe, TRUE); + + api_winusb_available = true; + return LIBUSB_SUCCESS; +} + +static int winusb_exit(void) +{ + return LIBUSB_SUCCESS; +} + +// NB: open and close must ensure that they only handle interface of +// the right API type, as these functions can be called wholesale from +// composite_open(), with interfaces belonging to different APIs +static int winusb_open(struct libusb_device_handle *dev_handle) +{ + struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); + + HANDLE file_handle; + int i; + + CHECK_WINUSB_AVAILABLE; + + // WinUSB requires a seperate handle for each interface + for (i = 0; i < USB_MAXINTERFACES; i++) { + if ( (priv->usb_interface[i].path != NULL) + && (priv->usb_interface[i].apib->id == USB_API_WINUSB) ) { + file_handle = CreateFileA(priv->usb_interface[i].path, GENERIC_WRITE | GENERIC_READ, FILE_SHARE_WRITE | FILE_SHARE_READ, + NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL); + if (file_handle == INVALID_HANDLE_VALUE) { + usbi_err(ctx, "could not open device %s (interface %d): %s", priv->usb_interface[i].path, i, windows_error_str(0)); + switch(GetLastError()) { + case ERROR_FILE_NOT_FOUND: // The device was disconnected + return LIBUSB_ERROR_NO_DEVICE; + case ERROR_ACCESS_DENIED: + return LIBUSB_ERROR_ACCESS; + default: + return LIBUSB_ERROR_IO; + } + } + handle_priv->interface_handle[i].dev_handle = file_handle; + } + } + + return LIBUSB_SUCCESS; +} + +static void winusb_close(struct libusb_device_handle *dev_handle) +{ + struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + HANDLE file_handle; + int i; + + if (!api_winusb_available) + return; + + for (i = 0; i < USB_MAXINTERFACES; i++) { + if (priv->usb_interface[i].apib->id == USB_API_WINUSB) { + file_handle = handle_priv->interface_handle[i].dev_handle; + if ( (file_handle != 0) && (file_handle != INVALID_HANDLE_VALUE)) { + CloseHandle(file_handle); + } + } + } +} + +static int winusb_configure_endpoints(struct libusb_device_handle *dev_handle, int iface) +{ + struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + HANDLE winusb_handle = handle_priv->interface_handle[iface].api_handle; + UCHAR policy; + ULONG timeout = 0; + uint8_t endpoint_address; + int i; + + CHECK_WINUSB_AVAILABLE; + + // With handle and enpoints set (in parent), we can setup the default pipe properties + // see http://download.microsoft.com/download/D/1/D/D1DD7745-426B-4CC3-A269-ABBBE427C0EF/DVC-T705_DDC08.pptx + for (i=-1; i<priv->usb_interface[iface].nb_endpoints; i++) { + endpoint_address =(i==-1)?0:priv->usb_interface[iface].endpoint[i]; + if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address, + PIPE_TRANSFER_TIMEOUT, sizeof(ULONG), &timeout)) { + usbi_dbg("failed to set PIPE_TRANSFER_TIMEOUT for control endpoint %02X", endpoint_address); + } + if (i == -1) continue; // Other policies don't apply to control endpoint + policy = false; + if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address, + SHORT_PACKET_TERMINATE, sizeof(UCHAR), &policy)) { + usbi_dbg("failed to disable SHORT_PACKET_TERMINATE for endpoint %02X", endpoint_address); + } + if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address, + IGNORE_SHORT_PACKETS, sizeof(UCHAR), &policy)) { + usbi_dbg("failed to disable IGNORE_SHORT_PACKETS for endpoint %02X", endpoint_address); + } + if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address, + ALLOW_PARTIAL_READS, sizeof(UCHAR), &policy)) { + usbi_dbg("failed to disable ALLOW_PARTIAL_READS for endpoint %02X", endpoint_address); + } + policy = true; + if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address, + AUTO_CLEAR_STALL, sizeof(UCHAR), &policy)) { + usbi_dbg("failed to enable AUTO_CLEAR_STALL for endpoint %02X", endpoint_address); + } + } + + return LIBUSB_SUCCESS; +} + +static int winusb_claim_interface(struct libusb_device_handle *dev_handle, int iface) +{ + struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); + struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + bool is_using_usbccgp = (priv->apib->id == USB_API_COMPOSITE); + HANDLE file_handle, winusb_handle; + + CHECK_WINUSB_AVAILABLE; + + // If the device is composite, but using the default Windows composite parent driver (usbccgp) + // or if it's the first WinUSB interface, we get a handle through WinUsb_Initialize(). + if ((is_using_usbccgp) || (iface == 0)) { + // composite device (independent interfaces) or interface 0 + file_handle = handle_priv->interface_handle[iface].dev_handle; + if ((file_handle == 0) || (file_handle == INVALID_HANDLE_VALUE)) { + return LIBUSB_ERROR_NOT_FOUND; + } + + if (!WinUsb_Initialize(file_handle, &winusb_handle)) { + usbi_err(ctx, "could not access interface %d: %s", iface, windows_error_str(0)); + handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE; + + switch(GetLastError()) { + case ERROR_BAD_COMMAND: // The device was disconnected + return LIBUSB_ERROR_NO_DEVICE; + default: + usbi_err(ctx, "could not claim interface %d: %s", iface, windows_error_str(0)); + return LIBUSB_ERROR_ACCESS; + } + } + handle_priv->interface_handle[iface].api_handle = winusb_handle; + } else { + // For all other interfaces, use WinUsb_GetAssociatedInterface() + winusb_handle = handle_priv->interface_handle[0].api_handle; + // It is a requirement for multiple interface devices using WinUSB that you + // must first claim the first interface before you claim any other + if ((winusb_handle == 0) || (winusb_handle == INVALID_HANDLE_VALUE)) { + file_handle = handle_priv->interface_handle[0].dev_handle; + if (WinUsb_Initialize(file_handle, &winusb_handle)) { + handle_priv->interface_handle[0].api_handle = winusb_handle; + usbi_warn(ctx, "auto-claimed interface 0 (required to claim %d with WinUSB)", iface); + } else { + usbi_warn(ctx, "failed to auto-claim interface 0 (required to claim %d with WinUSB)", iface); + return LIBUSB_ERROR_ACCESS; + } + } + if (!WinUsb_GetAssociatedInterface(winusb_handle, (UCHAR)(iface-1), + &handle_priv->interface_handle[iface].api_handle)) { + handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE; + switch(GetLastError()) { + case ERROR_NO_MORE_ITEMS: // invalid iface + return LIBUSB_ERROR_NOT_FOUND; + case ERROR_BAD_COMMAND: // The device was disconnected + return LIBUSB_ERROR_NO_DEVICE; + case ERROR_ALREADY_EXISTS: // already claimed + return LIBUSB_ERROR_BUSY; + default: + usbi_err(ctx, "could not claim interface %d: %s", iface, windows_error_str(0)); + return LIBUSB_ERROR_ACCESS; + } + } + } + usbi_dbg("claimed interface %d", iface); + handle_priv->active_interface = iface; + + return LIBUSB_SUCCESS; +} + +static int winusb_release_interface(struct libusb_device_handle *dev_handle, int iface) +{ + struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); + HANDLE winusb_handle; + + CHECK_WINUSB_AVAILABLE; + + winusb_handle = handle_priv->interface_handle[iface].api_handle; + if ((winusb_handle == 0) || (winusb_handle == INVALID_HANDLE_VALUE)) { + return LIBUSB_ERROR_NOT_FOUND; + } + + WinUsb_Free(winusb_handle); + handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE; + + return LIBUSB_SUCCESS; +} + +/* + * Return the first valid interface (of the same API type), for control transfers + */ +static int winusb_get_valid_interface(struct libusb_device_handle *dev_handle) +{ + struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); + int i; + + for (i=0; i<USB_MAXINTERFACES; i++) { + if ( (handle_priv->interface_handle[i].dev_handle != 0) + && (handle_priv->interface_handle[i].dev_handle != INVALID_HANDLE_VALUE) + && (handle_priv->interface_handle[i].api_handle != 0) + && (handle_priv->interface_handle[i].api_handle != INVALID_HANDLE_VALUE) ) { + return i; + } + } + return -1; +} + +/* + * Lookup interface by endpoint address. -1 if not found + */ +static int interface_by_endpoint(struct windows_device_priv *priv, + struct windows_device_handle_priv *handle_priv, uint8_t endpoint_address) +{ + int i, j; + for (i=0; i<USB_MAXINTERFACES; i++) { + if (handle_priv->interface_handle[i].api_handle == INVALID_HANDLE_VALUE) + continue; + if (handle_priv->interface_handle[i].api_handle == 0) + continue; + if (priv->usb_interface[i].endpoint == NULL) + continue; + for (j=0; j<priv->usb_interface[i].nb_endpoints; j++) { + if (priv->usb_interface[i].endpoint[j] == endpoint_address) { + return i; + } + } + } + return -1; +} + +static int winusb_submit_control_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); + struct windows_device_handle_priv *handle_priv = _device_handle_priv( + transfer->dev_handle); + WINUSB_SETUP_PACKET *setup = (WINUSB_SETUP_PACKET *) transfer->buffer; + ULONG size; + HANDLE winusb_handle; + int current_interface; + struct winfd wfd; + + CHECK_WINUSB_AVAILABLE; + + transfer_priv->pollable_fd = INVALID_WINFD; + size = transfer->length - LIBUSB_CONTROL_SETUP_SIZE; + + if (size > MAX_CTRL_BUFFER_LENGTH) + return LIBUSB_ERROR_INVALID_PARAM; + + current_interface = winusb_get_valid_interface(transfer->dev_handle); + if (current_interface < 0) { + if (auto_claim(transfer, ¤t_interface, USB_API_WINUSB) != LIBUSB_SUCCESS) { + return LIBUSB_ERROR_NOT_FOUND; + } + } + + usbi_dbg("will use interface %d", current_interface); + winusb_handle = handle_priv->interface_handle[current_interface].api_handle; + + wfd = usbi_create_fd(winusb_handle, _O_RDONLY); + // Always use the handle returned from usbi_create_fd (wfd.handle) + if (wfd.fd < 0) { + return LIBUSB_ERROR_NO_MEM; + } + + // Sending of set configuration control requests from WinUSB creates issues + if ( ((setup->request_type & (0x03 << 5)) == LIBUSB_REQUEST_TYPE_STANDARD) + && (setup->request == LIBUSB_REQUEST_SET_CONFIGURATION) ) { + if (setup->value != priv->active_config) { + usbi_warn(ctx, "cannot set configuration other than the default one"); + usbi_free_fd(wfd.fd); + return LIBUSB_ERROR_INVALID_PARAM; + } + wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY; + wfd.overlapped->InternalHigh = 0; + } else { + if (!WinUsb_ControlTransfer(wfd.handle, *setup, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, size, NULL, wfd.overlapped)) { + if(GetLastError() != ERROR_IO_PENDING) { + usbi_err(ctx, "WinUsb_ControlTransfer failed: %s", windows_error_str(0)); + usbi_free_fd(wfd.fd); + return LIBUSB_ERROR_IO; + } + } else { + wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY; + wfd.overlapped->InternalHigh = (DWORD)size; + } + } + + // Use priv_transfer to store data needed for async polling + transfer_priv->pollable_fd = wfd; + transfer_priv->interface_number = (uint8_t)current_interface; + + return LIBUSB_SUCCESS; +} + +static int winusb_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) +{ + struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); + struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); + HANDLE winusb_handle; + + CHECK_WINUSB_AVAILABLE; + + if (altsetting > 255) { + return LIBUSB_ERROR_INVALID_PARAM; + } + + winusb_handle = handle_priv->interface_handle[iface].api_handle; + if ((winusb_handle == 0) || (winusb_handle == INVALID_HANDLE_VALUE)) { + usbi_err(ctx, "interface must be claimed first"); + return LIBUSB_ERROR_NOT_FOUND; + } + + if (!WinUsb_SetCurrentAlternateSetting(winusb_handle, (UCHAR)altsetting)) { + usbi_err(ctx, "WinUsb_SetCurrentAlternateSetting failed: %s", windows_error_str(0)); + return LIBUSB_ERROR_IO; + } + + return LIBUSB_SUCCESS; +} + +static int winusb_submit_bulk_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); + struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); + struct windows_device_handle_priv *handle_priv = _device_handle_priv(transfer->dev_handle); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + HANDLE winusb_handle; + bool ret; + int current_interface; + struct winfd wfd; + + CHECK_WINUSB_AVAILABLE; + + transfer_priv->pollable_fd = INVALID_WINFD; + + current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint); + if (current_interface < 0) { + usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer"); + return LIBUSB_ERROR_NOT_FOUND; + } + + usbi_dbg("matched endpoint %02X with interface %d", transfer->endpoint, current_interface); + + winusb_handle = handle_priv->interface_handle[current_interface].api_handle; + + wfd = usbi_create_fd(winusb_handle, IS_XFERIN(transfer) ? _O_RDONLY : _O_WRONLY); + // Always use the handle returned from usbi_create_fd (wfd.handle) + if (wfd.fd < 0) { + return LIBUSB_ERROR_NO_MEM; + } + + if (IS_XFERIN(transfer)) { + usbi_dbg("reading %d bytes", transfer->length); + ret = WinUsb_ReadPipe(wfd.handle, transfer->endpoint, transfer->buffer, transfer->length, NULL, wfd.overlapped); + } else { + usbi_dbg("writing %d bytes", transfer->length); + ret = WinUsb_WritePipe(wfd.handle, transfer->endpoint, transfer->buffer, transfer->length, NULL, wfd.overlapped); + } + if (!ret) { + if(GetLastError() != ERROR_IO_PENDING) { + usbi_err(ctx, "WinUsb_Pipe Transfer failed: %s", windows_error_str(0)); + usbi_free_fd(wfd.fd); + return LIBUSB_ERROR_IO; + } + } else { + wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY; + wfd.overlapped->InternalHigh = (DWORD)transfer->length; + } + + transfer_priv->pollable_fd = wfd; + transfer_priv->interface_number = (uint8_t)current_interface; + + return LIBUSB_SUCCESS; +} + +static int winusb_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) +{ + struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); + struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + HANDLE winusb_handle; + int current_interface; + + CHECK_WINUSB_AVAILABLE; + + current_interface = interface_by_endpoint(priv, handle_priv, endpoint); + if (current_interface < 0) { + usbi_err(ctx, "unable to match endpoint to an open interface - cannot clear"); + return LIBUSB_ERROR_NOT_FOUND; + } + + usbi_dbg("matched endpoint %02X with interface %d", endpoint, current_interface); + winusb_handle = handle_priv->interface_handle[current_interface].api_handle; + + if (!WinUsb_ResetPipe(winusb_handle, endpoint)) { + usbi_err(ctx, "WinUsb_ResetPipe failed: %s", windows_error_str(0)); + return LIBUSB_ERROR_NO_DEVICE; + } + + return LIBUSB_SUCCESS; +} + +/* + * from http://www.winvistatips.com/winusb-bugchecks-t335323.html (confirmed + * through testing as well): + * "You can not call WinUsb_AbortPipe on control pipe. You can possibly cancel + * the control transfer using CancelIo" + */ +static int winusb_abort_control(struct usbi_transfer *itransfer) +{ + // Cancelling of the I/O is done in the parent + return LIBUSB_SUCCESS; +} + +static int winusb_abort_transfers(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); + struct windows_device_handle_priv *handle_priv = _device_handle_priv(transfer->dev_handle); + struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer); + HANDLE winusb_handle; + int current_interface; + + CHECK_WINUSB_AVAILABLE; + + current_interface = transfer_priv->interface_number; + if ((current_interface < 0) || (current_interface >= USB_MAXINTERFACES)) { + usbi_err(ctx, "program assertion failed: invalid interface_number"); + return LIBUSB_ERROR_NOT_FOUND; + } + usbi_dbg("will use interface %d", current_interface); + + winusb_handle = handle_priv->interface_handle[current_interface].api_handle; + + if (!WinUsb_AbortPipe(winusb_handle, transfer->endpoint)) { + usbi_err(ctx, "WinUsb_AbortPipe failed: %s", windows_error_str(0)); + return LIBUSB_ERROR_NO_DEVICE; + } + + return LIBUSB_SUCCESS; +} + +/* + * from the "How to Use WinUSB to Communicate with a USB Device" Microsoft white paper + * (http://www.microsoft.com/whdc/connect/usb/winusb_howto.mspx): + * "WinUSB does not support host-initiated reset port and cycle port operations" and + * IOCTL_INTERNAL_USB_CYCLE_PORT is only available in kernel mode and the + * IOCTL_USB_HUB_CYCLE_PORT ioctl was removed from Vista => the best we can do is + * cycle the pipes (and even then, the control pipe can not be reset using WinUSB) + */ +// TODO (post hotplug): see if we can force eject the device and redetect it (reuse hotplug?) +static int winusb_reset_device(struct libusb_device_handle *dev_handle) +{ + struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); + struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + struct winfd wfd; + HANDLE winusb_handle; + int i, j; + + CHECK_WINUSB_AVAILABLE; + + // Reset any available pipe (except control) + for (i=0; i<USB_MAXINTERFACES; i++) { + winusb_handle = handle_priv->interface_handle[i].api_handle; + for (wfd = handle_to_winfd(winusb_handle); wfd.fd > 0;) + { + // Cancel any pollable I/O + usbi_remove_pollfd(ctx, wfd.fd); + usbi_free_fd(wfd.fd); + wfd = handle_to_winfd(winusb_handle); + } + + if ( (winusb_handle != 0) && (winusb_handle != INVALID_HANDLE_VALUE)) { + for (j=0; j<priv->usb_interface[i].nb_endpoints; j++) { + usbi_dbg("resetting ep %02X", priv->usb_interface[i].endpoint[j]); + if (!WinUsb_AbortPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) { + usbi_err(ctx, "WinUsb_AbortPipe (pipe address %02X) failed: %s", + priv->usb_interface[i].endpoint[j], windows_error_str(0)); + } + // FlushPipe seems to fail on OUT pipes + if (IS_EPIN(priv->usb_interface[i].endpoint[j]) + && (!WinUsb_FlushPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) ) { + usbi_err(ctx, "WinUsb_FlushPipe (pipe address %02X) failed: %s", + priv->usb_interface[i].endpoint[j], windows_error_str(0)); + } + if (!WinUsb_ResetPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) { + usbi_err(ctx, "WinUsb_ResetPipe (pipe address %02X) failed: %s", + priv->usb_interface[i].endpoint[j], windows_error_str(0)); + } + } + } + } + + return LIBUSB_SUCCESS; +} + +static int winusb_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size) +{ + itransfer->transferred += io_size; + return LIBUSB_TRANSFER_COMPLETED; +} + + +/* + * Composite API functions + */ +static int composite_init(struct libusb_context *ctx) +{ + return LIBUSB_SUCCESS; +} + +static int composite_exit(void) +{ + return LIBUSB_SUCCESS; +} + +static int composite_open(struct libusb_device_handle *dev_handle) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + unsigned api; + int r; + uint8_t flag = 1<<USB_API_WINUSB; + + for (api=USB_API_WINUSB; api<USB_API_MAX; api++) { + if (priv->composite_api_flags & flag) { + r = usb_api_backend[api].open(dev_handle); + if (r != LIBUSB_SUCCESS) { + return r; + } + } + flag <<= 1; + } + return LIBUSB_SUCCESS; +} + +static void composite_close(struct libusb_device_handle *dev_handle) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + unsigned api; + uint8_t flag = 1<<USB_API_WINUSB; + + for (api=USB_API_WINUSB; api<USB_API_MAX; api++) { + if (priv->composite_api_flags & flag) { + usb_api_backend[api].close(dev_handle); + } + flag <<= 1; + } +} + +static int composite_claim_interface(struct libusb_device_handle *dev_handle, int iface) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + return priv->usb_interface[iface].apib->claim_interface(dev_handle, iface); +} + +static int composite_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + return priv->usb_interface[iface].apib->set_interface_altsetting(dev_handle, iface, altsetting); +} + +static int composite_release_interface(struct libusb_device_handle *dev_handle, int iface) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + return priv->usb_interface[iface].apib->release_interface(dev_handle, iface); +} + +static int composite_submit_control_transfer(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + int i; + + for (i=0; i<USB_MAXINTERFACES; i++) { + if (priv->usb_interface[i].path != NULL) { + usbi_dbg("using interface %d", i); + return priv->usb_interface[i].apib->submit_control_transfer(itransfer); + } + } + + usbi_err(ctx, "no libusb supported interfaces to complete request"); + return LIBUSB_ERROR_NOT_FOUND; +} + +static int composite_submit_bulk_transfer(struct usbi_transfer *itransfer) { + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); + struct windows_device_handle_priv *handle_priv = _device_handle_priv(transfer->dev_handle); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + int current_interface; + + current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint); + if (current_interface < 0) { + usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer"); + return LIBUSB_ERROR_NOT_FOUND; + } + + return priv->usb_interface[current_interface].apib->submit_bulk_transfer(itransfer); +} + +static int composite_submit_iso_transfer(struct usbi_transfer *itransfer) { + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); + struct windows_device_handle_priv *handle_priv = _device_handle_priv(transfer->dev_handle); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + int current_interface; + + current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint); + if (current_interface < 0) { + usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer"); + return LIBUSB_ERROR_NOT_FOUND; + } + + return priv->usb_interface[current_interface].apib->submit_iso_transfer(itransfer); +} + +static int composite_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) +{ + struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); + struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + int current_interface; + + current_interface = interface_by_endpoint(priv, handle_priv, endpoint); + if (current_interface < 0) { + usbi_err(ctx, "unable to match endpoint to an open interface - cannot clear"); + return LIBUSB_ERROR_NOT_FOUND; + } + + return priv->usb_interface[current_interface].apib->clear_halt(dev_handle, endpoint); +} + +static int composite_abort_control(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + + return priv->usb_interface[transfer_priv->interface_number].apib->abort_control(itransfer); +} + +static int composite_abort_transfers(struct usbi_transfer *itransfer) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + + return priv->usb_interface[transfer_priv->interface_number].apib->abort_transfers(itransfer); +} + +static int composite_reset_device(struct libusb_device_handle *dev_handle) +{ + struct windows_device_priv *priv = _device_priv(dev_handle->dev); + unsigned api; + int r; + uint8_t flag = 1<<USB_API_WINUSB; + + for (api=USB_API_WINUSB; api<USB_API_MAX; api++) { + if (priv->composite_api_flags & flag) { + r = usb_api_backend[api].reset_device(dev_handle); + if (r != LIBUSB_SUCCESS) { + return r; + } + } + flag <<= 1; + } + return LIBUSB_SUCCESS; +} + +static int composite_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size) +{ + struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); + struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer); + struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); + + return priv->usb_interface[transfer_priv->interface_number].apib->copy_transfer_data(itransfer, io_size); +} diff --git a/libusb/os/windows_usb.h b/libusb/os/windows_usb.h new file mode 100644 index 0000000..ddbd680 --- /dev/null +++ b/libusb/os/windows_usb.h @@ -0,0 +1,608 @@ +/* + * Windows backend for libusb 1.0 + * Copyright (C) 2009-2010 Pete Batard <pbatard@gmail.com> + * With contributions from Michael Plante, Orin Eman et al. + * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer + * Major code testing contribution by Xiaofan Chen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#pragma once + +#if defined(_MSC_VER) +// disable /W4 MSVC warnings that are benign +#pragma warning(disable:4127) // conditional expression is constant +#pragma warning(disable:4100) // unreferenced formal parameter +#pragma warning(disable:4214) // bit field types other than int +#pragma warning(disable:4201) // nameless struct/union +#endif + +// Windows API default is uppercase - ugh! +#if !defined(bool) +#define bool BOOL +#endif +#if !defined(true) +#define true TRUE +#endif +#if !defined(false) +#define false FALSE +#endif + +// Missing from MSVC6 setupapi.h +#if !defined(SPDRP_ADDRESS) +#define SPDRP_ADDRESS 28 +#endif +#if !defined(SPDRP_INSTALL_STATE) +#define SPDRP_INSTALL_STATE 34 +#endif + +#if defined(__CYGWIN__ ) +// cygwin produces a warning unless these prototypes are defined +extern int _snprintf(char *buffer, size_t count, const char *format, ...); +extern char *_strdup(const char *strSource); +// _beginthreadex is MSVCRT => unavailable for cygwin. Fallback to using CreateThread +#define _beginthreadex(a, b, c, d, e, f) CreateThread(a, b, (LPTHREAD_START_ROUTINE)c, d, e, f) +#endif +#define safe_free(p) do {if (p != NULL) {free((void*)p); p = NULL;}} while(0) +#define safe_closehandle(h) do {if (h != INVALID_HANDLE_VALUE) {CloseHandle(h); h = INVALID_HANDLE_VALUE;}} while(0) +#define safe_min(a, b) min((size_t)(a), (size_t)(b)) +#define safe_strcp(dst, dst_max, src, count) do {memcpy(dst, src, safe_min(count, dst_max)); \ + ((char*)dst)[safe_min(count, dst_max)-1] = 0;} while(0) +#define safe_strcpy(dst, dst_max, src) safe_strcp(dst, dst_max, src, safe_strlen(src)+1) +#define safe_strncat(dst, dst_max, src, count) strncat(dst, src, safe_min(count, dst_max - safe_strlen(dst) - 1)) +#define safe_strcat(dst, dst_max, src) safe_strncat(dst, dst_max, src, safe_strlen(src)+1) +#define safe_strcmp(str1, str2) strcmp(((str1==NULL)?"<NULL>":str1), ((str2==NULL)?"<NULL>":str2)) +#define safe_strncmp(str1, str2, count) strncmp(((str1==NULL)?"<NULL>":str1), ((str2==NULL)?"<NULL>":str2), count) +#define safe_strlen(str) ((str==NULL)?0:strlen(str)) +#define safe_sprintf _snprintf +#define safe_unref_device(dev) do {if (dev != NULL) {libusb_unref_device(dev); dev = NULL;}} while(0) +#define wchar_to_utf8_ms(wstr, str, strlen) WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, strlen, NULL, NULL) +static inline void upperize(char* str) { + size_t i; + if (str == NULL) return; + for (i=0; i<safe_strlen(str); i++) + str[i] = (char)toupper((int)str[i]); +} + +#define MAX_CTRL_BUFFER_LENGTH 4096 +#define MAX_USB_DEVICES 256 +#define MAX_USB_STRING_LENGTH 128 +#define MAX_GUID_STRING_LENGTH 40 +#define MAX_PATH_LENGTH 128 +#define MAX_KEY_LENGTH 256 +#define MAX_TIMER_SEMAPHORES 128 +#define TIMER_REQUEST_RETRY_MS 100 +#define ERR_BUFFER_SIZE 256 +#define LIST_SEPARATOR ';' +#define HTAB_SIZE 1021 + +// http://msdn.microsoft.com/en-us/library/ff545978.aspx +// http://msdn.microsoft.com/en-us/library/ff545972.aspx +// http://msdn.microsoft.com/en-us/library/ff545982.aspx +#if !defined(GUID_DEVINTERFACE_USB_HOST_CONTROLLER) +const GUID GUID_DEVINTERFACE_USB_HOST_CONTROLLER = { 0x3ABF6F2D, 0x71C4, 0x462A, {0x8A, 0x92, 0x1E, 0x68, 0x61, 0xE6, 0xAF, 0x27} }; +#endif +#if !defined(GUID_DEVINTERFACE_USB_DEVICE) +const GUID GUID_DEVINTERFACE_USB_DEVICE = { 0xA5DCBF10, 0x6530, 0x11D2, {0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED} }; +#endif +#if !defined(GUID_DEVINTERFACE_USB_HUB) +const GUID GUID_DEVINTERFACE_USB_HUB = { 0xF18A0E88, 0xC30C, 0x11D0, {0x88, 0x15, 0x00, 0xA0, 0xC9, 0x06, 0xBE, 0xD8} }; +#endif +const GUID GUID_NULL = { 0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} }; + + +/* + * Multiple USB API backend support + */ +#define USB_API_UNSUPPORTED 0 +#define USB_API_HUB 1 +#define USB_API_COMPOSITE 2 +#define USB_API_WINUSB 3 +#define USB_API_MAX 4 + +#define CLASS_GUID_UNSUPPORTED GUID_NULL +const GUID CLASS_GUID_LIBUSB_WINUSB = { 0x78A1C341, 0x4539, 0x11D3, {0xB8, 0x8D, 0x00, 0xC0, 0x4F, 0xAD, 0x51, 0x71} }; +const GUID CLASS_GUID_COMPOSITE = { 0x36FC9E60, 0xC465, 0x11cF, {0x80, 0x56, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00} }; + +struct windows_usb_api_backend { + const uint8_t id; + const char* designation; + const GUID *class_guid; // The Class GUID (for fallback in case the driver name cannot be read) + const char **driver_name_list; // Driver name, without .sys, e.g. "usbccgp" + const uint8_t nb_driver_names; + int (*init)(struct libusb_context *ctx); + int (*exit)(void); + int (*open)(struct libusb_device_handle *dev_handle); + void (*close)(struct libusb_device_handle *dev_handle); + int (*claim_interface)(struct libusb_device_handle *dev_handle, int iface); + int (*set_interface_altsetting)(struct libusb_device_handle *dev_handle, int iface, int altsetting); + int (*release_interface)(struct libusb_device_handle *dev_handle, int iface); + int (*clear_halt)(struct libusb_device_handle *dev_handle, unsigned char endpoint); + int (*reset_device)(struct libusb_device_handle *dev_handle); + int (*submit_bulk_transfer)(struct usbi_transfer *itransfer); + int (*submit_iso_transfer)(struct usbi_transfer *itransfer); + int (*submit_control_transfer)(struct usbi_transfer *itransfer); + int (*abort_control)(struct usbi_transfer *itransfer); + int (*abort_transfers)(struct usbi_transfer *itransfer); + int (*copy_transfer_data)(struct usbi_transfer *itransfer, uint32_t io_size); +}; + +extern const struct windows_usb_api_backend usb_api_backend[USB_API_MAX]; + +#define PRINT_UNSUPPORTED_API(fname) \ + usbi_dbg("unsupported API call for '" \ + #fname "' (unrecognized device driver)"); \ + return LIBUSB_ERROR_NOT_SUPPORTED; + +/* + * private structures definition + * with inline pseudo constructors/destructors + */ +typedef struct libusb_device_descriptor USB_DEVICE_DESCRIPTOR, *PUSB_DEVICE_DESCRIPTOR; +struct windows_device_priv { + uint8_t depth; // distance to HCD + uint8_t port; // port number on the hub + struct libusb_device *parent_dev; // access to parent is required for usermode ops + char *path; // device interface path + struct windows_usb_api_backend const *apib; + struct { + char *path; // each interface needs a device interface path, + struct windows_usb_api_backend const *apib; // an API backend (multiple drivers support), + int8_t nb_endpoints; // and a set of endpoint addresses (USB_MAXENDPOINTS) + uint8_t *endpoint; + } usb_interface[USB_MAXINTERFACES]; + uint8_t composite_api_flags; // composite devices require additional data + uint8_t active_config; + USB_DEVICE_DESCRIPTOR dev_descriptor; + unsigned char **config_descriptor; // list of pointers to the cached config descriptors +}; + +static inline struct windows_device_priv *_device_priv(struct libusb_device *dev) { + return (struct windows_device_priv *)dev->os_priv; +} + +static inline void windows_device_priv_init(libusb_device* dev) { + struct windows_device_priv* p = _device_priv(dev); + int i; + p->depth = 0; + p->port = 0; + p->parent_dev = NULL; + p->path = NULL; + p->apib = &usb_api_backend[USB_API_UNSUPPORTED]; + p->composite_api_flags = 0; + p->active_config = 0; + p->config_descriptor = NULL; + memset(&(p->dev_descriptor), 0, sizeof(USB_DEVICE_DESCRIPTOR)); + for (i=0; i<USB_MAXINTERFACES; i++) { + p->usb_interface[i].path = NULL; + p->usb_interface[i].apib = &usb_api_backend[USB_API_UNSUPPORTED]; + p->usb_interface[i].nb_endpoints = 0; + p->usb_interface[i].endpoint = NULL; + } +} + +static inline void windows_device_priv_release(libusb_device* dev) { + struct windows_device_priv* p = _device_priv(dev); + int i; + safe_free(p->path); + if ((dev->num_configurations > 0) && (p->config_descriptor != NULL)) { + for (i=0; i < dev->num_configurations; i++) + safe_free(p->config_descriptor[i]); + } + safe_free(p->config_descriptor); + for (i=0; i<USB_MAXINTERFACES; i++) { + safe_free(p->usb_interface[i].path); + safe_free(p->usb_interface[i].endpoint); + } +} + +struct interface_handle_t { + HANDLE dev_handle; // WinUSB needs an extra handle for the file + HANDLE api_handle; // used by the API to communicate with the device +}; + +struct windows_device_handle_priv { + int active_interface; + struct interface_handle_t interface_handle[USB_MAXINTERFACES]; + int autoclaim_count[USB_MAXINTERFACES]; // For auto-release +}; + +static inline struct windows_device_handle_priv *_device_handle_priv( + struct libusb_device_handle *handle) +{ + return (struct windows_device_handle_priv *) handle->os_priv; +} + +// used for async polling functions +struct windows_transfer_priv { + struct winfd pollable_fd; + uint8_t interface_number; +}; + +// used to match a device driver (including filter drivers) against a supported API +struct driver_lookup { + char list[MAX_KEY_LENGTH+1];// REG_MULTI_SZ list of services (driver) names + const DWORD reg_prop; // SPDRP registry key to use to retreive list + const char* designation; // internal designation (for debug output) +}; + +/* + * API macros - from libusb-win32 1.x + */ +#define DLL_DECLARE_PREFIXNAME(api, ret, prefixname, name, args) \ + typedef ret (api * __dll_##name##_t)args; \ + static __dll_##name##_t prefixname = NULL + +#define DLL_LOAD_PREFIXNAME(dll, prefixname, name, ret_on_failure) \ + do { \ + HMODULE h = GetModuleHandleA(#dll); \ + if (!h) \ + h = LoadLibraryA(#dll); \ + if (!h) { \ + if (ret_on_failure) { return LIBUSB_ERROR_NOT_FOUND; }\ + else { break; } \ + } \ + prefixname = (__dll_##name##_t)GetProcAddress(h, #name); \ + if (prefixname) break; \ + prefixname = (__dll_##name##_t)GetProcAddress(h, #name "A"); \ + if (prefixname) break; \ + prefixname = (__dll_##name##_t)GetProcAddress(h, #name "W"); \ + if (prefixname) break; \ + if(ret_on_failure) \ + return LIBUSB_ERROR_NOT_FOUND; \ + } while(0) + +#define DLL_DECLARE(api, ret, name, args) DLL_DECLARE_PREFIXNAME(api, ret, name, name, args) +#define DLL_LOAD(dll, name, ret_on_failure) DLL_LOAD_PREFIXNAME(dll, name, name, ret_on_failure) +#define DLL_DECLARE_PREFIXED(api, ret, prefix, name, args) DLL_DECLARE_PREFIXNAME(api, ret, prefix##name, name, args) +#define DLL_LOAD_PREFIXED(dll, prefix, name, ret_on_failure) DLL_LOAD_PREFIXNAME(dll, prefix##name, name, ret_on_failure) + +/* OLE32 dependency */ +DLL_DECLARE_PREFIXED(WINAPI, HRESULT, p, CLSIDFromString, (LPCOLESTR, LPCLSID)); + +/* SetupAPI dependencies */ +DLL_DECLARE_PREFIXED(WINAPI, HDEVINFO, p, SetupDiGetClassDevsA, (const GUID*, PCSTR, HWND, DWORD)); +DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiEnumDeviceInfo, (HDEVINFO, DWORD, PSP_DEVINFO_DATA)); +DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiEnumDeviceInterfaces, (HDEVINFO, PSP_DEVINFO_DATA, + const GUID*, DWORD, PSP_DEVICE_INTERFACE_DATA)); +DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiGetDeviceInterfaceDetailA, (HDEVINFO, PSP_DEVICE_INTERFACE_DATA, + PSP_DEVICE_INTERFACE_DETAIL_DATA_A, DWORD, PDWORD, PSP_DEVINFO_DATA)); +DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiDestroyDeviceInfoList, (HDEVINFO)); +DLL_DECLARE_PREFIXED(WINAPI, HKEY, p, SetupDiOpenDevRegKey, (HDEVINFO, PSP_DEVINFO_DATA, DWORD, DWORD, DWORD, REGSAM)); +DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiGetDeviceRegistryPropertyA, (HDEVINFO, + PSP_DEVINFO_DATA, DWORD, PDWORD, PBYTE, DWORD, PDWORD)); +DLL_DECLARE_PREFIXED(WINAPI, LONG, p, RegQueryValueExW, (HKEY, LPCWSTR, LPDWORD, LPDWORD, LPBYTE, LPDWORD)); +DLL_DECLARE_PREFIXED(WINAPI, LONG, p, RegCloseKey, (HKEY)); + +/* + * Windows DDK API definitions. Most of it copied from MinGW's includes + */ +typedef DWORD DEVNODE, DEVINST; +typedef DEVNODE *PDEVNODE, *PDEVINST; +typedef DWORD RETURN_TYPE; +typedef RETURN_TYPE CONFIGRET; + +#define CR_SUCCESS 0x00000000 +#define CR_NO_SUCH_DEVNODE 0x0000000D + +#define USB_DEVICE_DESCRIPTOR_TYPE LIBUSB_DT_DEVICE +#define USB_CONFIGURATION_DESCRIPTOR_TYPE LIBUSB_DT_CONFIG +#define USB_STRING_DESCRIPTOR_TYPE LIBUSB_DT_STRING +#define USB_INTERFACE_DESCRIPTOR_TYPE LIBUSB_DT_INTERFACE +#define USB_ENDPOINT_DESCRIPTOR_TYPE LIBUSB_DT_ENDPOINT + +#define USB_REQUEST_GET_STATUS LIBUSB_REQUEST_GET_STATUS +#define USB_REQUEST_CLEAR_FEATURE LIBUSB_REQUEST_CLEAR_FEATURE +#define USB_REQUEST_SET_FEATURE LIBUSB_REQUEST_SET_FEATURE +#define USB_REQUEST_SET_ADDRESS LIBUSB_REQUEST_SET_ADDRESS +#define USB_REQUEST_GET_DESCRIPTOR LIBUSB_REQUEST_GET_DESCRIPTOR +#define USB_REQUEST_SET_DESCRIPTOR LIBUSB_REQUEST_SET_DESCRIPTOR +#define USB_REQUEST_GET_CONFIGURATION LIBUSB_REQUEST_GET_CONFIGURATION +#define USB_REQUEST_SET_CONFIGURATION LIBUSB_REQUEST_SET_CONFIGURATION +#define USB_REQUEST_GET_INTERFACE LIBUSB_REQUEST_GET_INTERFACE +#define USB_REQUEST_SET_INTERFACE LIBUSB_REQUEST_SET_INTERFACE +#define USB_REQUEST_SYNC_FRAME LIBUSB_REQUEST_SYNCH_FRAME + +#define USB_GET_NODE_INFORMATION 258 +#define USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION 260 +#define USB_GET_NODE_CONNECTION_NAME 261 +#define USB_GET_HUB_CAPABILITIES 271 +#if !defined(USB_GET_NODE_CONNECTION_INFORMATION_EX) +#define USB_GET_NODE_CONNECTION_INFORMATION_EX 274 +#endif +#if !defined(USB_GET_HUB_CAPABILITIES_EX) +#define USB_GET_HUB_CAPABILITIES_EX 276 +#endif + +#ifndef METHOD_BUFFERED +#define METHOD_BUFFERED 0 +#endif +#ifndef FILE_ANY_ACCESS +#define FILE_ANY_ACCESS 0x00000000 +#endif +#ifndef FILE_DEVICE_UNKNOWN +#define FILE_DEVICE_UNKNOWN 0x00000022 +#endif +#ifndef FILE_DEVICE_USB +#define FILE_DEVICE_USB FILE_DEVICE_UNKNOWN +#endif + +#ifndef CTL_CODE +#define CTL_CODE(DeviceType, Function, Method, Access)( \ + ((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method)) +#endif + +typedef enum USB_CONNECTION_STATUS { + NoDeviceConnected, + DeviceConnected, + DeviceFailedEnumeration, + DeviceGeneralFailure, + DeviceCausedOvercurrent, + DeviceNotEnoughPower, + DeviceNotEnoughBandwidth, + DeviceHubNestedTooDeeply, + DeviceInLegacyHub +} USB_CONNECTION_STATUS, *PUSB_CONNECTION_STATUS; + +typedef enum USB_HUB_NODE { + UsbHub, + UsbMIParent +} USB_HUB_NODE; + +/* Cfgmgr32.dll interface */ +DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Parent, (PDEVINST, DEVINST, ULONG)); +DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Child, (PDEVINST, DEVINST, ULONG)); +DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Sibling, (PDEVINST, DEVINST, ULONG)); +DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Device_IDA, (DEVINST, PCHAR, ULONG, ULONG)); + +#define IOCTL_USB_GET_HUB_CAPABILITIES_EX \ + CTL_CODE( FILE_DEVICE_USB, USB_GET_HUB_CAPABILITIES_EX, METHOD_BUFFERED, FILE_ANY_ACCESS) + +#define IOCTL_USB_GET_HUB_CAPABILITIES \ + CTL_CODE(FILE_DEVICE_USB, USB_GET_HUB_CAPABILITIES, METHOD_BUFFERED, FILE_ANY_ACCESS) + +#define IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION \ + CTL_CODE(FILE_DEVICE_USB, USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, METHOD_BUFFERED, FILE_ANY_ACCESS) + +#define IOCTL_USB_GET_ROOT_HUB_NAME \ + CTL_CODE(FILE_DEVICE_USB, HCD_GET_ROOT_HUB_NAME, METHOD_BUFFERED, FILE_ANY_ACCESS) + +#define IOCTL_USB_GET_NODE_INFORMATION \ + CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_INFORMATION, METHOD_BUFFERED, FILE_ANY_ACCESS) + +#define IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX \ + CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_INFORMATION_EX, METHOD_BUFFERED, FILE_ANY_ACCESS) + +#define IOCTL_USB_GET_NODE_CONNECTION_ATTRIBUTES \ + CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_ATTRIBUTES, METHOD_BUFFERED, FILE_ANY_ACCESS) + +#define IOCTL_USB_GET_NODE_CONNECTION_NAME \ + CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_NAME, METHOD_BUFFERED, FILE_ANY_ACCESS) + +// Most of the structures below need to be packed +#pragma pack(push, 1) + +typedef struct USB_INTERFACE_DESCRIPTOR { + UCHAR bLength; + UCHAR bDescriptorType; + UCHAR bInterfaceNumber; + UCHAR bAlternateSetting; + UCHAR bNumEndpoints; + UCHAR bInterfaceClass; + UCHAR bInterfaceSubClass; + UCHAR bInterfaceProtocol; + UCHAR iInterface; +} USB_INTERFACE_DESCRIPTOR, *PUSB_INTERFACE_DESCRIPTOR; + +typedef struct USB_CONFIGURATION_DESCRIPTOR { + UCHAR bLength; + UCHAR bDescriptorType; + USHORT wTotalLength; + UCHAR bNumInterfaces; + UCHAR bConfigurationValue; + UCHAR iConfiguration; + UCHAR bmAttributes; + UCHAR MaxPower; +} USB_CONFIGURATION_DESCRIPTOR, *PUSB_CONFIGURATION_DESCRIPTOR; + +typedef struct USB_CONFIGURATION_DESCRIPTOR_SHORT { + struct { + ULONG ConnectionIndex; + struct { + UCHAR bmRequest; + UCHAR bRequest; + USHORT wValue; + USHORT wIndex; + USHORT wLength; + } SetupPacket; + } req; + USB_CONFIGURATION_DESCRIPTOR data; +} USB_CONFIGURATION_DESCRIPTOR_SHORT; + +typedef struct USB_ENDPOINT_DESCRIPTOR { + UCHAR bLength; + UCHAR bDescriptorType; + UCHAR bEndpointAddress; + UCHAR bmAttributes; + USHORT wMaxPacketSize; + UCHAR bInterval; +} USB_ENDPOINT_DESCRIPTOR, *PUSB_ENDPOINT_DESCRIPTOR; + +typedef struct USB_DESCRIPTOR_REQUEST { + ULONG ConnectionIndex; + struct { + UCHAR bmRequest; + UCHAR bRequest; + USHORT wValue; + USHORT wIndex; + USHORT wLength; + } SetupPacket; +// UCHAR Data[0]; +} USB_DESCRIPTOR_REQUEST, *PUSB_DESCRIPTOR_REQUEST; + +typedef struct USB_HUB_DESCRIPTOR { + UCHAR bDescriptorLength; + UCHAR bDescriptorType; + UCHAR bNumberOfPorts; + USHORT wHubCharacteristics; + UCHAR bPowerOnToPowerGood; + UCHAR bHubControlCurrent; + UCHAR bRemoveAndPowerMask[64]; +} USB_HUB_DESCRIPTOR, *PUSB_HUB_DESCRIPTOR; + +typedef struct USB_ROOT_HUB_NAME { + ULONG ActualLength; + WCHAR RootHubName[1]; +} USB_ROOT_HUB_NAME, *PUSB_ROOT_HUB_NAME; + +typedef struct USB_ROOT_HUB_NAME_FIXED { + ULONG ActualLength; + WCHAR RootHubName[MAX_PATH_LENGTH]; +} USB_ROOT_HUB_NAME_FIXED; + +typedef struct USB_NODE_CONNECTION_NAME { + ULONG ConnectionIndex; + ULONG ActualLength; + WCHAR NodeName[1]; +} USB_NODE_CONNECTION_NAME, *PUSB_NODE_CONNECTION_NAME; + +typedef struct USB_NODE_CONNECTION_NAME_FIXED { + ULONG ConnectionIndex; + ULONG ActualLength; + WCHAR NodeName[MAX_PATH_LENGTH]; +} USB_NODE_CONNECTION_NAME_FIXED; + +typedef struct USB_HUB_NAME_FIXED { + union { + USB_ROOT_HUB_NAME_FIXED root; + USB_NODE_CONNECTION_NAME_FIXED node; + } u; +} USB_HUB_NAME_FIXED; + +typedef struct USB_HUB_INFORMATION { + USB_HUB_DESCRIPTOR HubDescriptor; + BOOLEAN HubIsBusPowered; +} USB_HUB_INFORMATION, *PUSB_HUB_INFORMATION; + +typedef struct USB_MI_PARENT_INFORMATION { + ULONG NumberOfInterfaces; +} USB_MI_PARENT_INFORMATION, *PUSB_MI_PARENT_INFORMATION; + +typedef struct USB_NODE_INFORMATION { + USB_HUB_NODE NodeType; + union { + USB_HUB_INFORMATION HubInformation; + USB_MI_PARENT_INFORMATION MiParentInformation; + } u; +} USB_NODE_INFORMATION, *PUSB_NODE_INFORMATION; + +typedef struct USB_PIPE_INFO { + USB_ENDPOINT_DESCRIPTOR EndpointDescriptor; + ULONG ScheduleOffset; +} USB_PIPE_INFO, *PUSB_PIPE_INFO; + +typedef struct USB_NODE_CONNECTION_INFORMATION_EX { + ULONG ConnectionIndex; + USB_DEVICE_DESCRIPTOR DeviceDescriptor; + UCHAR CurrentConfigurationValue; + UCHAR Speed; + BOOLEAN DeviceIsHub; + USHORT DeviceAddress; + ULONG NumberOfOpenPipes; + USB_CONNECTION_STATUS ConnectionStatus; +// USB_PIPE_INFO PipeList[0]; +} USB_NODE_CONNECTION_INFORMATION_EX, *PUSB_NODE_CONNECTION_INFORMATION_EX; + +typedef struct USB_HUB_CAP_FLAGS { + ULONG HubIsHighSpeedCapable:1; + ULONG HubIsHighSpeed:1; + ULONG HubIsMultiTtCapable:1; + ULONG HubIsMultiTt:1; + ULONG HubIsRoot:1; + ULONG HubIsArmedWakeOnConnect:1; + ULONG ReservedMBZ:26; +} USB_HUB_CAP_FLAGS, *PUSB_HUB_CAP_FLAGS; + +typedef struct USB_HUB_CAPABILITIES { + ULONG HubIs2xCapable : 1; +} USB_HUB_CAPABILITIES, *PUSB_HUB_CAPABILITIES; + +typedef struct USB_HUB_CAPABILITIES_EX { + USB_HUB_CAP_FLAGS CapabilityFlags; +} USB_HUB_CAPABILITIES_EX, *PUSB_HUB_CAPABILITIES_EX; + +#pragma pack(pop) + +/* winusb.dll interface */ + +#define SHORT_PACKET_TERMINATE 0x01 +#define AUTO_CLEAR_STALL 0x02 +#define PIPE_TRANSFER_TIMEOUT 0x03 +#define IGNORE_SHORT_PACKETS 0x04 +#define ALLOW_PARTIAL_READS 0x05 +#define AUTO_FLUSH 0x06 +#define RAW_IO 0x07 +#define MAXIMUM_TRANSFER_SIZE 0x08 +#define AUTO_SUSPEND 0x81 +#define SUSPEND_DELAY 0x83 +#define DEVICE_SPEED 0x01 +#define LowSpeed 0x01 +#define FullSpeed 0x02 +#define HighSpeed 0x03 + +typedef enum USBD_PIPE_TYPE { + UsbdPipeTypeControl, + UsbdPipeTypeIsochronous, + UsbdPipeTypeBulk, + UsbdPipeTypeInterrupt +} USBD_PIPE_TYPE; + +typedef struct { + USBD_PIPE_TYPE PipeType; + UCHAR PipeId; + USHORT MaximumPacketSize; + UCHAR Interval; +} WINUSB_PIPE_INFORMATION, *PWINUSB_PIPE_INFORMATION; + +#pragma pack(1) +typedef struct { + UCHAR request_type; + UCHAR request; + USHORT value; + USHORT index; + USHORT length; +} WINUSB_SETUP_PACKET, *PWINUSB_SETUP_PACKET; +#pragma pack() + +typedef void *WINUSB_INTERFACE_HANDLE, *PWINUSB_INTERFACE_HANDLE; + +DLL_DECLARE(WINAPI, BOOL, WinUsb_Initialize, (HANDLE, PWINUSB_INTERFACE_HANDLE)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_Free, (WINUSB_INTERFACE_HANDLE)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_GetAssociatedInterface, (WINUSB_INTERFACE_HANDLE, UCHAR, PWINUSB_INTERFACE_HANDLE)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_GetDescriptor, (WINUSB_INTERFACE_HANDLE, UCHAR, UCHAR, USHORT, PUCHAR, ULONG, PULONG)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_QueryInterfaceSettings, (WINUSB_INTERFACE_HANDLE, UCHAR, PUSB_INTERFACE_DESCRIPTOR)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_QueryDeviceInformation, (WINUSB_INTERFACE_HANDLE, ULONG, PULONG, PVOID)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_SetCurrentAlternateSetting, (WINUSB_INTERFACE_HANDLE, UCHAR)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_GetCurrentAlternateSetting, (WINUSB_INTERFACE_HANDLE, PUCHAR)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_QueryPipe, (WINUSB_INTERFACE_HANDLE, UCHAR, UCHAR, PWINUSB_PIPE_INFORMATION)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_SetPipePolicy, (WINUSB_INTERFACE_HANDLE, UCHAR, ULONG, ULONG, PVOID)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_GetPipePolicy, (WINUSB_INTERFACE_HANDLE, UCHAR, ULONG, PULONG, PVOID)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_ReadPipe, (WINUSB_INTERFACE_HANDLE, UCHAR, PUCHAR, ULONG, PULONG, LPOVERLAPPED)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_WritePipe, (WINUSB_INTERFACE_HANDLE, UCHAR, PUCHAR, ULONG, PULONG, LPOVERLAPPED)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_ControlTransfer, (WINUSB_INTERFACE_HANDLE, WINUSB_SETUP_PACKET, PUCHAR, ULONG, PULONG, LPOVERLAPPED)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_ResetPipe, (WINUSB_INTERFACE_HANDLE, UCHAR)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_AbortPipe, (WINUSB_INTERFACE_HANDLE, UCHAR)); +DLL_DECLARE(WINAPI, BOOL, WinUsb_FlushPipe, (WINUSB_INTERFACE_HANDLE, UCHAR)); diff --git a/libusb/sync.c b/libusb/sync.c new file mode 100644 index 0000000..8eed47b --- /dev/null +++ b/libusb/sync.c @@ -0,0 +1,314 @@ +/* + * Synchronous I/O functions for libusb + * Copyright (C) 2007-2008 Daniel Drake <dsd@gentoo.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <config.h> +#include <errno.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> + +#include "libusbi.h" + +/** + * @defgroup syncio Synchronous device I/O + * + * This page documents libusb's synchronous (blocking) API for USB device I/O. + * This interface is easy to use but has some limitations. More advanced users + * may wish to consider using the \ref asyncio "asynchronous I/O API" instead. + */ + +static void LIBUSB_CALL ctrl_transfer_cb(struct libusb_transfer *transfer) +{ + int *completed = transfer->user_data; + *completed = 1; + usbi_dbg("actual_length=%d", transfer->actual_length); + /* caller interprets result and frees transfer */ +} + +/** \ingroup syncio + * Perform a USB control transfer. + * + * The direction of the transfer is inferred from the bmRequestType field of + * the setup packet. + * + * The wValue, wIndex and wLength fields values should be given in host-endian + * byte order. + * + * \param dev_handle a handle for the device to communicate with + * \param bmRequestType the request type field for the setup packet + * \param bRequest the request field for the setup packet + * \param wValue the value field for the setup packet + * \param wIndex the index field for the setup packet + * \param data a suitably-sized data buffer for either input or output + * (depending on direction bits within bmRequestType) + * \param wLength the length field for the setup packet. The data buffer should + * be at least this size. + * \param timeout timeout (in millseconds) that this function should wait + * before giving up due to no response being received. For an unlimited + * timeout, use value 0. + * \returns on success, the number of bytes actually transferred + * \returns LIBUSB_ERROR_TIMEOUT if the transfer timed out + * \returns LIBUSB_ERROR_PIPE if the control request was not supported by the + * device + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns another LIBUSB_ERROR code on other failures + */ +int API_EXPORTED libusb_control_transfer(libusb_device_handle *dev_handle, + uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, + unsigned char *data, uint16_t wLength, unsigned int timeout) +{ + struct libusb_transfer *transfer = libusb_alloc_transfer(0); + unsigned char *buffer; + int completed = 0; + int r; + + if (!transfer) + return LIBUSB_ERROR_NO_MEM; + + buffer = malloc(LIBUSB_CONTROL_SETUP_SIZE + wLength); + if (!buffer) { + libusb_free_transfer(transfer); + return LIBUSB_ERROR_NO_MEM; + } + + libusb_fill_control_setup(buffer, bmRequestType, bRequest, wValue, wIndex, + wLength); + if ((bmRequestType & LIBUSB_ENDPOINT_DIR_MASK) == LIBUSB_ENDPOINT_OUT) + memcpy(buffer + LIBUSB_CONTROL_SETUP_SIZE, data, wLength); + + libusb_fill_control_transfer(transfer, dev_handle, buffer, + ctrl_transfer_cb, &completed, timeout); + transfer->flags = LIBUSB_TRANSFER_FREE_BUFFER; + r = libusb_submit_transfer(transfer); + if (r < 0) { + libusb_free_transfer(transfer); + return r; + } + + while (!completed) { + r = libusb_handle_events_completed(HANDLE_CTX(dev_handle), &completed); + if (r < 0) { + if (r == LIBUSB_ERROR_INTERRUPTED) + continue; + libusb_cancel_transfer(transfer); + while (!completed) + if (libusb_handle_events_completed(HANDLE_CTX(dev_handle), &completed) < 0) + break; + libusb_free_transfer(transfer); + return r; + } + } + + if ((bmRequestType & LIBUSB_ENDPOINT_DIR_MASK) == LIBUSB_ENDPOINT_IN) + memcpy(data, libusb_control_transfer_get_data(transfer), + transfer->actual_length); + + switch (transfer->status) { + case LIBUSB_TRANSFER_COMPLETED: + r = transfer->actual_length; + break; + case LIBUSB_TRANSFER_TIMED_OUT: + r = LIBUSB_ERROR_TIMEOUT; + break; + case LIBUSB_TRANSFER_STALL: + r = LIBUSB_ERROR_PIPE; + break; + case LIBUSB_TRANSFER_NO_DEVICE: + r = LIBUSB_ERROR_NO_DEVICE; + break; + case LIBUSB_TRANSFER_OVERFLOW: + r = LIBUSB_ERROR_OVERFLOW; + break; + default: + usbi_warn(HANDLE_CTX(dev_handle), + "unrecognised status code %d", transfer->status); + r = LIBUSB_ERROR_OTHER; + } + + libusb_free_transfer(transfer); + return r; +} + +static void LIBUSB_CALL bulk_transfer_cb(struct libusb_transfer *transfer) +{ + int *completed = transfer->user_data; + *completed = 1; + usbi_dbg("actual_length=%d", transfer->actual_length); + /* caller interprets results and frees transfer */ +} + +static int do_sync_bulk_transfer(struct libusb_device_handle *dev_handle, + unsigned char endpoint, unsigned char *buffer, int length, + int *transferred, unsigned int timeout, unsigned char type) +{ + struct libusb_transfer *transfer = libusb_alloc_transfer(0); + int completed = 0; + int r; + + if (!transfer) + return LIBUSB_ERROR_NO_MEM; + + libusb_fill_bulk_transfer(transfer, dev_handle, endpoint, buffer, length, + bulk_transfer_cb, &completed, timeout); + transfer->type = type; + + r = libusb_submit_transfer(transfer); + if (r < 0) { + libusb_free_transfer(transfer); + return r; + } + + while (!completed) { + r = libusb_handle_events_completed(HANDLE_CTX(dev_handle), &completed); + if (r < 0) { + if (r == LIBUSB_ERROR_INTERRUPTED) + continue; + libusb_cancel_transfer(transfer); + while (!completed) + if (libusb_handle_events_completed(HANDLE_CTX(dev_handle), &completed) < 0) + break; + libusb_free_transfer(transfer); + return r; + } + } + + *transferred = transfer->actual_length; + switch (transfer->status) { + case LIBUSB_TRANSFER_COMPLETED: + r = 0; + break; + case LIBUSB_TRANSFER_TIMED_OUT: + r = LIBUSB_ERROR_TIMEOUT; + break; + case LIBUSB_TRANSFER_STALL: + r = LIBUSB_ERROR_PIPE; + break; + case LIBUSB_TRANSFER_OVERFLOW: + r = LIBUSB_ERROR_OVERFLOW; + break; + case LIBUSB_TRANSFER_NO_DEVICE: + r = LIBUSB_ERROR_NO_DEVICE; + break; + default: + usbi_warn(HANDLE_CTX(dev_handle), + "unrecognised status code %d", transfer->status); + r = LIBUSB_ERROR_OTHER; + } + + libusb_free_transfer(transfer); + return r; +} + +/** \ingroup syncio + * Perform a USB bulk transfer. The direction of the transfer is inferred from + * the direction bits of the endpoint address. + * + * For bulk reads, the <tt>length</tt> field indicates the maximum length of + * data you are expecting to receive. If less data arrives than expected, + * this function will return that data, so be sure to check the + * <tt>transferred</tt> output parameter. + * + * You should also check the <tt>transferred</tt> parameter for bulk writes. + * Not all of the data may have been written. + * + * Also check <tt>transferred</tt> when dealing with a timeout error code. + * libusb may have to split your transfer into a number of chunks to satisfy + * underlying O/S requirements, meaning that the timeout may expire after + * the first few chunks have completed. libusb is careful not to lose any data + * that may have been transferred; do not assume that timeout conditions + * indicate a complete lack of I/O. + * + * \param dev_handle a handle for the device to communicate with + * \param endpoint the address of a valid endpoint to communicate with + * \param data a suitably-sized data buffer for either input or output + * (depending on endpoint) + * \param length for bulk writes, the number of bytes from data to be sent. for + * bulk reads, the maximum number of bytes to receive into the data buffer. + * \param transferred output location for the number of bytes actually + * transferred. + * \param timeout timeout (in millseconds) that this function should wait + * before giving up due to no response being received. For an unlimited + * timeout, use value 0. + * + * \returns 0 on success (and populates <tt>transferred</tt>) + * \returns LIBUSB_ERROR_TIMEOUT if the transfer timed out (and populates + * <tt>transferred</tt>) + * \returns LIBUSB_ERROR_PIPE if the endpoint halted + * \returns LIBUSB_ERROR_OVERFLOW if the device offered more data, see + * \ref packetoverflow + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns another LIBUSB_ERROR code on other failures + */ +int API_EXPORTED libusb_bulk_transfer(struct libusb_device_handle *dev_handle, + unsigned char endpoint, unsigned char *data, int length, int *transferred, + unsigned int timeout) +{ + return do_sync_bulk_transfer(dev_handle, endpoint, data, length, + transferred, timeout, LIBUSB_TRANSFER_TYPE_BULK); +} + +/** \ingroup syncio + * Perform a USB interrupt transfer. The direction of the transfer is inferred + * from the direction bits of the endpoint address. + * + * For interrupt reads, the <tt>length</tt> field indicates the maximum length + * of data you are expecting to receive. If less data arrives than expected, + * this function will return that data, so be sure to check the + * <tt>transferred</tt> output parameter. + * + * You should also check the <tt>transferred</tt> parameter for interrupt + * writes. Not all of the data may have been written. + * + * Also check <tt>transferred</tt> when dealing with a timeout error code. + * libusb may have to split your transfer into a number of chunks to satisfy + * underlying O/S requirements, meaning that the timeout may expire after + * the first few chunks have completed. libusb is careful not to lose any data + * that may have been transferred; do not assume that timeout conditions + * indicate a complete lack of I/O. + * + * The default endpoint bInterval value is used as the polling interval. + * + * \param dev_handle a handle for the device to communicate with + * \param endpoint the address of a valid endpoint to communicate with + * \param data a suitably-sized data buffer for either input or output + * (depending on endpoint) + * \param length for bulk writes, the number of bytes from data to be sent. for + * bulk reads, the maximum number of bytes to receive into the data buffer. + * \param transferred output location for the number of bytes actually + * transferred. + * \param timeout timeout (in millseconds) that this function should wait + * before giving up due to no response being received. For an unlimited + * timeout, use value 0. + * + * \returns 0 on success (and populates <tt>transferred</tt>) + * \returns LIBUSB_ERROR_TIMEOUT if the transfer timed out + * \returns LIBUSB_ERROR_PIPE if the endpoint halted + * \returns LIBUSB_ERROR_OVERFLOW if the device offered more data, see + * \ref packetoverflow + * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected + * \returns another LIBUSB_ERROR code on other error + */ +int API_EXPORTED libusb_interrupt_transfer( + struct libusb_device_handle *dev_handle, unsigned char endpoint, + unsigned char *data, int length, int *transferred, unsigned int timeout) +{ + return do_sync_bulk_transfer(dev_handle, endpoint, data, length, + transferred, timeout, LIBUSB_TRANSFER_TYPE_INTERRUPT); +} + diff --git a/libusb/version.h b/libusb/version.h new file mode 100644 index 0000000..62446da --- /dev/null +++ b/libusb/version.h @@ -0,0 +1,18 @@ +/* This file is parsed by m4 and windres and RC.EXE so please keep it simple. */ +#ifndef LIBUSB_MAJOR +#define LIBUSB_MAJOR 1 +#endif +#ifndef LIBUSB_MINOR +#define LIBUSB_MINOR 0 +#endif +#ifndef LIBUSB_MICRO +#define LIBUSB_MICRO 9 +#endif +/* LIBUSB_NANO may be used for Windows internal versioning. 0 means unused. */ +#ifndef LIBUSB_NANO +#define LIBUSB_NANO 0 +#endif +/* LIBUSB_RC is the release candidate suffix. Should normally be empty. */ +#ifndef LIBUSB_RC +#define LIBUSB_RC "" +#endif diff --git a/msvc/config.h b/msvc/config.h new file mode 100644 index 0000000..43aa1f7 --- /dev/null +++ b/msvc/config.h @@ -0,0 +1,24 @@ +/* config.h. Manual config for MSVC. */ + +#ifndef _MSC_VER +#warn "msvc/config.h shouldn't be included for your development environment." +#error "Please make sure the msvc/ directory is removed from your build path." +#endif + +/* Default visibility */ +#define DEFAULT_VISIBILITY /**/ + +/* Debug message logging */ +//#define ENABLE_DEBUG_LOGGING 1 + +/* Message logging */ +#define ENABLE_LOGGING 1 + +/* Windows backend */ +#define OS_WINDOWS 1 + +/* type of second poll() argument */ +#define POLL_NFDS_TYPE unsigned int + +/* no way to run git describe from MSVC? */ +#define LIBUSB_DESCRIBE "" diff --git a/msvc/ddk_build.cmd b/msvc/ddk_build.cmd new file mode 100644 index 0000000..ed9b8a8 --- /dev/null +++ b/msvc/ddk_build.cmd @@ -0,0 +1,106 @@ +@rem default builds static library. +@rem you can pass the following arguments (case insensitive): +@rem - "DLL" to build a DLL instead of a static library +@rem - "/MT" to build a static library compatible with MSVC's /MT option (LIBCMT vs MSVCRT) +@echo off + +if Test%BUILD_ALT_DIR%==Test goto usage + +rem process commandline parameters +set TARGET=LIBRARY +set STATIC_LIBC= +set version=1.0 + +if "%1" == "" goto no_more_args +rem /I for case insensitive +if /I Test%1==TestDLL set TARGET=DYNLINK +if /I Test%1==Test/MT set STATIC_LIBC=1 +:no_more_args + +cd ..\libusb\os +echo TARGETTYPE=%TARGET% > target +copy target+..\..\msvc\libusb_sources sources >NUL 2>&1 +del target +@echo on +build -cwgZ +@echo off +if errorlevel 1 goto builderror +cd ..\.. + +set cpudir=i386 +set destType=Win32 +if %_BUILDARCH%==x86 goto isI386 +set cpudir=amd64 +set destType=x64 +:isI386 + +set srcPath=libusb\os\obj%BUILD_ALT_DIR%\%cpudir% + +set dstPath=%destType%\Debug +if %DDKBUILDENV%==chk goto isDebug +set dstPath=%destType%\Release +:isDebug + +if exist %destType% goto md2 +mkdir %destType% +:md2 +if exist %dstPath% goto md3 +mkdir %dstPath% +:md3 +if exist %dstPath%\dll goto md4 +mkdir %dstPath%\dll +:md4 +if exist %dstPath%\lib goto md5 +md %dstPath%\lib +:md5 +if exist %dstPath%\examples goto md6 +md %dstPath%\examples +:md6 +@echo on + +@if /I NOT Test%1==TestDLL goto copylib +copy %srcPath%\libusb-%version%.dll %dstPath%\dll +copy %srcPath%\libusb-%version%.pdb %dstPath%\dll +:copylib +copy %srcPath%\libusb-%version%.lib %dstPath%\lib + +@echo off + +if exist examples\listdevs_ddkbuild goto md7 +md examples\listdevs_ddkbuild +:md7 + +cd examples\listdevs_ddkbuild +copy ..\..\msvc\listdevs_sources sources >NUL 2>&1 +@echo on +build -cwgZ +@echo off +if errorlevel 1 goto buildlistdevserror +cd ..\.. + +set srcPath=examples\listdevs_ddkbuild\obj%BUILD_ALT_DIR%\%cpudir% +@echo on + +copy %srcPath%\listdevs.exe %dstPath%\examples +copy %srcPath%\listdevs.pdb %dstPath%\examples + +cd msvc +goto done + + +:builderror +cd ..\..\msvc +echo Build failed +goto done + +:buildlistdevserror +cd ..\..\msvc +echo listdevs build failed +goto done + +:usage +echo ddk_build must be run in a WDK build environment +pause +goto done + +:done diff --git a/msvc/inttypes.h b/msvc/inttypes.h new file mode 100644 index 0000000..289bb50 --- /dev/null +++ b/msvc/inttypes.h @@ -0,0 +1,295 @@ +/** + * This file has no copyright assigned and is placed in the Public Domain. + * This file was original part of the w64 mingw-runtime package. + */ + +/* + * THIS SOFTWARE IS NOT COPYRIGHTED + * + * Modified for libusb/MSVC: Pete Batard <pbatard@gmail.com> + * + * This source code is offered for use in the public domain. You may + * use, modify or distribute it freely. + * + * This code is distributed in the hope that it will be useful but + * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY + * DISCLAIMED. This includes but is not limited to warranties of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Date: 2010-04-02 + */ + +#ifndef _MSC_VER +#error This header should only be used with Microsoft compilers +#endif + +/* 7.8 Format conversion of integer types <inttypes.h> */ + +#ifndef _INTTYPES_H_ +#define _INTTYPES_H_ + +#include <stdint.h> + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct { + intmax_t quot; + intmax_t rem; + } imaxdiv_t; + + +/* 7.8.1 Macros for format specifiers + * + * MS runtime does not yet understand C9x standard "ll" + * length specifier. It appears to treat "ll" as "l". + * The non-standard I64 length specifier causes warning in GCC, + * but understood by MS runtime functions. + */ + +/* fprintf macros for signed types */ +#define PRId8 "d" +#define PRId16 "d" +#define PRId32 "d" +#define PRId64 "I64d" + +#define PRIdLEAST8 "d" +#define PRIdLEAST16 "d" +#define PRIdLEAST32 "d" +#define PRIdLEAST64 "I64d" + +#define PRIdFAST8 "d" +#define PRIdFAST16 "d" +#define PRIdFAST32 "d" +#define PRIdFAST64 "I64d" + +#define PRIdMAX "I64d" + +#define PRIi8 "i" +#define PRIi16 "i" +#define PRIi32 "i" +#define PRIi64 "I64i" + +#define PRIiLEAST8 "i" +#define PRIiLEAST16 "i" +#define PRIiLEAST32 "i" +#define PRIiLEAST64 "I64i" + +#define PRIiFAST8 "i" +#define PRIiFAST16 "i" +#define PRIiFAST32 "i" +#define PRIiFAST64 "I64i" + +#define PRIiMAX "I64i" + +#define PRIo8 "o" +#define PRIo16 "o" +#define PRIo32 "o" +#define PRIo64 "I64o" + +#define PRIoLEAST8 "o" +#define PRIoLEAST16 "o" +#define PRIoLEAST32 "o" +#define PRIoLEAST64 "I64o" + +#define PRIoFAST8 "o" +#define PRIoFAST16 "o" +#define PRIoFAST32 "o" +#define PRIoFAST64 "I64o" + +#define PRIoMAX "I64o" + +/* fprintf macros for unsigned types */ +#define PRIu8 "u" +#define PRIu16 "u" +#define PRIu32 "u" +#define PRIu64 "I64u" + + +#define PRIuLEAST8 "u" +#define PRIuLEAST16 "u" +#define PRIuLEAST32 "u" +#define PRIuLEAST64 "I64u" + +#define PRIuFAST8 "u" +#define PRIuFAST16 "u" +#define PRIuFAST32 "u" +#define PRIuFAST64 "I64u" + +#define PRIuMAX "I64u" + +#define PRIx8 "x" +#define PRIx16 "x" +#define PRIx32 "x" +#define PRIx64 "I64x" + +#define PRIxLEAST8 "x" +#define PRIxLEAST16 "x" +#define PRIxLEAST32 "x" +#define PRIxLEAST64 "I64x" + +#define PRIxFAST8 "x" +#define PRIxFAST16 "x" +#define PRIxFAST32 "x" +#define PRIxFAST64 "I64x" + +#define PRIxMAX "I64x" + +#define PRIX8 "X" +#define PRIX16 "X" +#define PRIX32 "X" +#define PRIX64 "I64X" + +#define PRIXLEAST8 "X" +#define PRIXLEAST16 "X" +#define PRIXLEAST32 "X" +#define PRIXLEAST64 "I64X" + +#define PRIXFAST8 "X" +#define PRIXFAST16 "X" +#define PRIXFAST32 "X" +#define PRIXFAST64 "I64X" + +#define PRIXMAX "I64X" + +/* + * fscanf macros for signed int types + * NOTE: if 32-bit int is used for int_fast8_t and int_fast16_t + * (see stdint.h, 7.18.1.3), FAST8 and FAST16 should have + * no length identifiers + */ + +#define SCNd16 "hd" +#define SCNd32 "d" +#define SCNd64 "I64d" + +#define SCNdLEAST16 "hd" +#define SCNdLEAST32 "d" +#define SCNdLEAST64 "I64d" + +#define SCNdFAST16 "hd" +#define SCNdFAST32 "d" +#define SCNdFAST64 "I64d" + +#define SCNdMAX "I64d" + +#define SCNi16 "hi" +#define SCNi32 "i" +#define SCNi64 "I64i" + +#define SCNiLEAST16 "hi" +#define SCNiLEAST32 "i" +#define SCNiLEAST64 "I64i" + +#define SCNiFAST16 "hi" +#define SCNiFAST32 "i" +#define SCNiFAST64 "I64i" + +#define SCNiMAX "I64i" + +#define SCNo16 "ho" +#define SCNo32 "o" +#define SCNo64 "I64o" + +#define SCNoLEAST16 "ho" +#define SCNoLEAST32 "o" +#define SCNoLEAST64 "I64o" + +#define SCNoFAST16 "ho" +#define SCNoFAST32 "o" +#define SCNoFAST64 "I64o" + +#define SCNoMAX "I64o" + +#define SCNx16 "hx" +#define SCNx32 "x" +#define SCNx64 "I64x" + +#define SCNxLEAST16 "hx" +#define SCNxLEAST32 "x" +#define SCNxLEAST64 "I64x" + +#define SCNxFAST16 "hx" +#define SCNxFAST32 "x" +#define SCNxFAST64 "I64x" + +#define SCNxMAX "I64x" + +/* fscanf macros for unsigned int types */ + +#define SCNu16 "hu" +#define SCNu32 "u" +#define SCNu64 "I64u" + +#define SCNuLEAST16 "hu" +#define SCNuLEAST32 "u" +#define SCNuLEAST64 "I64u" + +#define SCNuFAST16 "hu" +#define SCNuFAST32 "u" +#define SCNuFAST64 "I64u" + +#define SCNuMAX "I64u" + +#ifdef _WIN64 +#define PRIdPTR "I64d" +#define PRIiPTR "I64i" +#define PRIoPTR "I64o" +#define PRIuPTR "I64u" +#define PRIxPTR "I64x" +#define PRIXPTR "I64X" +#define SCNdPTR "I64d" +#define SCNiPTR "I64i" +#define SCNoPTR "I64o" +#define SCNxPTR "I64x" +#define SCNuPTR "I64u" +#else +#define PRIdPTR "d" +#define PRIiPTR "i" +#define PRIoPTR "o" +#define PRIuPTR "u" +#define PRIxPTR "x" +#define PRIXPTR "X" +#define SCNdPTR "d" +#define SCNiPTR "i" +#define SCNoPTR "o" +#define SCNxPTR "x" + #define SCNuPTR "u" +#endif + +#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L +/* + * no length modifier for char types prior to C9x + * MS runtime scanf appears to treat "hh" as "h" + */ + +/* signed char */ +#define SCNd8 "hhd" +#define SCNdLEAST8 "hhd" +#define SCNdFAST8 "hhd" + +#define SCNi8 "hhi" +#define SCNiLEAST8 "hhi" +#define SCNiFAST8 "hhi" + +#define SCNo8 "hho" +#define SCNoLEAST8 "hho" +#define SCNoFAST8 "hho" + +#define SCNx8 "hhx" +#define SCNxLEAST8 "hhx" +#define SCNxFAST8 "hhx" + +/* unsigned char */ +#define SCNu8 "hhu" +#define SCNuLEAST8 "hhu" +#define SCNuFAST8 "hhu" +#endif /* __STDC_VERSION__ >= 199901 */ + + +#ifdef __cplusplus +} +#endif + +#endif /* ndef _INTTYPES_H */ diff --git a/msvc/libusb.dsw b/msvc/libusb.dsw new file mode 100644 index 0000000..8926e67 --- /dev/null +++ b/msvc/libusb.dsw @@ -0,0 +1,56 @@ +Microsoft Developer Studio Workspace File, Format Version 6.00
+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!
+
+###############################################################################
+
+Project: "libusb_dll"=".\libusb_dll.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+}}}
+
+###############################################################################
+
+Project: "libusb_static"=".\libusb_static.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+}}}
+
+###############################################################################
+
+Project: "listdevs"=".\listdevs.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+ Begin Project Dependency
+ Project_Dep_Name libusb_static
+ End Project Dependency
+}}}
+
+###############################################################################
+
+Global:
+
+Package=<5>
+{{{
+}}}
+
+Package=<3>
+{{{
+}}}
+
+###############################################################################
+
diff --git a/msvc/libusb_dll.dsp b/msvc/libusb_dll.dsp new file mode 100644 index 0000000..96a011e --- /dev/null +++ b/msvc/libusb_dll.dsp @@ -0,0 +1,190 @@ +# Microsoft Developer Studio Project File - Name="libusb_dll" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102
+
+CFG=libusb_dll - Win32 Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE
+!MESSAGE NMAKE /f "libusb_dll.mak".
+!MESSAGE
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE
+!MESSAGE NMAKE /f "libusb_dll.mak" CFG="libusb_dll - Win32 Debug"
+!MESSAGE
+!MESSAGE Possible choices for configuration are:
+!MESSAGE
+!MESSAGE "libusb_dll - Win32 Release" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "libusb_dll - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+MTL=midl.exe
+RSC=rc.exe
+
+!IF "$(CFG)" == "libusb_dll - Win32 Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "../Win32/Release/dll"
+# PROP Intermediate_Dir "../Win32/Release/dll"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_USRDLL" /D "LIBUSB_DLL_EXPORTS" /YX /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "." /I "../libusb" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_UNICODE" /D "UNICODE" /U "_MBCS" /D "_USRDLL" /FR /FD /EHsc /c
+# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib shell32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /machine:I386
+# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib shell32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /machine:I386 /out:"Win32/Release/dll/libusb-1.0.dll"
+
+!ELSEIF "$(CFG)" == "libusb_dll - Win32 Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "../Win32/Debug/dll"
+# PROP Intermediate_Dir "../Win32/Debug/dll"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_USRDLL" /D "LIBUSB_DLL_EXPORTS" /YX /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /GX /ZI /Od /I "." /I "../libusb" /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_UNICODE" /D "UNICODE" /U "_MBCS" /D "_USRDLL" /FR /FD /EHsc /c
+# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
+# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo /n
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib shell32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib shell32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /debug /machine:I386 /out:"Win32/Debug/dll/libusb-1.0.dll"
+# SUBTRACT LINK32 /pdb:none /incremental:no
+
+!ENDIF
+
+# Begin Target
+
+# Name "libusb_dll - Win32 Release"
+# Name "libusb_dll - Win32 Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE=..\libusb\core.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\darwin_usb.c
+# PROP Exclude_From_Build 1
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\descriptor.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\io.c
+# End Source File
+# Begin Source File
+
+SOURCE="..\libusb\libusb-1.0.rc"
+# End Source File
+# Begin Source File
+
+SOURCE="..\libusb\libusb-1.0.def"
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\linux_usbfs.c
+# PROP Exclude_From_Build 1
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\poll_windows.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\sync.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\threads_windows.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\windows_usb.c
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# Begin Source File
+
+SOURCE=.\config.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\darwin_usb.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\libusb.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\libusbi.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\linux_usbfs.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\poll_posix.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\poll_windows.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\threads_posix.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\threads_windows.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\windows_usb.h
+# End Source File
+# End Group
+# Begin Group "Resource Files"
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+# End Group
+# End Target
+# End Project
diff --git a/msvc/libusb_dll.vcproj b/msvc/libusb_dll.vcproj new file mode 100644 index 0000000..242898b --- /dev/null +++ b/msvc/libusb_dll.vcproj @@ -0,0 +1,421 @@ +<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+ ProjectType="Visual C++"
+ Version="8.00"
+ Name="libusb-1.0 (dll)"
+ ProjectGUID="{8224C054-5968-4238-832C-167155E7ECC3}"
+ RootNamespace="libusbdll"
+ Keyword="Win32Proj"
+ >
+ <Platforms>
+ <Platform
+ Name="Win32"
+ />
+ <Platform
+ Name="x64"
+ />
+ </Platforms>
+ <ToolFiles>
+ </ToolFiles>
+ <Configurations>
+ <Configuration
+ Name="Debug|Win32"
+ OutputDirectory="..\$(PlatformName)\$(ConfigurationName)\dll"
+ IntermediateDirectory="..\$(PlatformName)\$(ConfigurationName)\dll\libusb-1.0"
+ ConfigurationType="2"
+ CharacterSet="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories=".;..\libusb"
+ PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;_CRT_SECURE_NO_WARNINGS"
+ MinimalRebuild="true"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="3"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="false"
+ DebugInformationFormat="4"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)\libusb-1.0.dll"
+ LinkIncremental="2"
+ ModuleDefinitionFile="..\libusb\libusb-1.0.def"
+ GenerateDebugInformation="true"
+ SubSystem="2"
+ TargetMachine="1"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Release|Win32"
+ OutputDirectory="..\$(PlatformName)\$(ConfigurationName)\dll"
+ IntermediateDirectory="..\$(PlatformName)\$(ConfigurationName)\dll\libusb-1.0"
+ ConfigurationType="2"
+ CharacterSet="1"
+ WholeProgramOptimization="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ AdditionalIncludeDirectories=".;..\libusb"
+ PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;_CRT_SECURE_NO_WARNINGS"
+ RuntimeLibrary="2"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="false"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)\libusb-1.0.dll"
+ LinkIncremental="1"
+ ModuleDefinitionFile="..\libusb\libusb-1.0.def"
+ GenerateDebugInformation="true"
+ SubSystem="2"
+ OptimizeReferences="2"
+ EnableCOMDATFolding="2"
+ TargetMachine="1"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Debug|x64"
+ OutputDirectory="..\$(PlatformName)\$(ConfigurationName)\dll"
+ IntermediateDirectory="..\$(PlatformName)\$(ConfigurationName)\dll\libusb-1.0"
+ ConfigurationType="2"
+ CharacterSet="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ TargetEnvironment="3"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories=".;..\libusb"
+ PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;_CRT_SECURE_NO_WARNINGS"
+ MinimalRebuild="true"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="3"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="false"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)\libusb-1.0.dll"
+ LinkIncremental="2"
+ ModuleDefinitionFile="..\libusb\libusb-1.0.def"
+ GenerateDebugInformation="true"
+ SubSystem="2"
+ TargetMachine="17"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Release|x64"
+ OutputDirectory="..\$(PlatformName)\$(ConfigurationName)\dll"
+ IntermediateDirectory="..\$(PlatformName)\$(ConfigurationName)\dll\libusb-1.0"
+ ConfigurationType="2"
+ CharacterSet="1"
+ WholeProgramOptimization="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ TargetEnvironment="3"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ AdditionalIncludeDirectories=".;..\libusb"
+ PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;_CRT_SECURE_NO_WARNINGS"
+ RuntimeLibrary="2"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="false"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ OutputFile="$(OutDir)\libusb-1.0.dll"
+ LinkIncremental="1"
+ ModuleDefinitionFile="..\libusb\libusb-1.0.def"
+ GenerateDebugInformation="true"
+ SubSystem="2"
+ OptimizeReferences="2"
+ EnableCOMDATFolding="2"
+ TargetMachine="17"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ </Configurations>
+ <References>
+ </References>
+ <Files>
+ <Filter
+ Name="Source Files"
+ Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
+ UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
+ >
+ <File
+ RelativePath="..\libusb\core.c"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\descriptor.c"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\io.c"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\libusb-1.0.def"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\sync.c"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\os\threads_windows.c"
+ >
+ </File>
+
+ <File
+ RelativePath="..\libusb\os\poll_windows.c"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\os\windows_usb.c"
+ >
+ </File>
+ </Filter>
+ <Filter
+ Name="Header Files"
+ Filter="h;hpp;hxx;hm;inl;inc;xsd"
+ UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
+ >
+ <File
+ RelativePath=".\config.h"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\libusb.h"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\libusbi.h"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\os\threads_windows.h"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\os\poll_windows.h"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\os\windows_usb.h"
+ >
+ </File>
+ </Filter>
+ <Filter
+ Name="Resource Files"
+ Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav"
+ UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}"
+ >
+ <File
+ RelativePath="..\libusb\libusb-1.0.rc"
+ >
+ </File>
+ </Filter>
+ </Files>
+ <Globals>
+ </Globals>
+</VisualStudioProject>
diff --git a/msvc/libusb_dll.vcxproj b/msvc/libusb_dll.vcxproj new file mode 100644 index 0000000..fe02056 --- /dev/null +++ b/msvc/libusb_dll.vcxproj @@ -0,0 +1,166 @@ +<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup Label="ProjectConfigurations">
+ <ProjectConfiguration Include="Debug|Win32">
+ <Configuration>Debug</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Debug|x64">
+ <Configuration>Debug</Configuration>
+ <Platform>x64</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Release|Win32">
+ <Configuration>Release</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Release|x64">
+ <Configuration>Release</Configuration>
+ <Platform>x64</Platform>
+ </ProjectConfiguration>
+ </ItemGroup>
+ <PropertyGroup Label="Globals">
+ <ProjectName>libusb-1.0 (dll)</ProjectName>
+ <ProjectGuid>{349EE8FA-7D25-4909-AAF5-FF3FADE72187}</ProjectGuid>
+ <RootNamespace>libusbdll</RootNamespace>
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+ <ConfigurationType>DynamicLibrary</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+ <ConfigurationType>DynamicLibrary</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+ <ConfigurationType>DynamicLibrary</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+ <ConfigurationType>DynamicLibrary</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+ <ImportGroup Label="ExtensionSettings">
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <PropertyGroup Label="UserMacros" />
+ <PropertyGroup>
+ <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+ <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(SolutionDir)..\$(Platform)\$(Configuration)\dll\</OutDir>
+ <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(SolutionDir)..\$(Platform)\$(Configuration)\dll\libusb-1.0\</IntDir>
+ <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(SolutionDir)..\$(Platform)\$(Configuration)\dll\</OutDir>
+ <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(SolutionDir)..\$(Platform)\$(Configuration)\dll\libusb-1.0\</IntDir>
+ <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(SolutionDir)..\$(Platform)\$(Configuration)\dll\</OutDir>
+ <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(SolutionDir)..\$(Platform)\$(Configuration)\dll\libusb-1.0\</IntDir>
+ <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(SolutionDir)..\$(Platform)\$(Configuration)\dll\</OutDir>
+ <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(SolutionDir)..\$(Platform)\$(Configuration)\dll\libusb-1.0\</IntDir>
+ <TargetName Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">libusb-1.0</TargetName>
+ <TargetName Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">libusb-1.0</TargetName>
+ <TargetName Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">libusb-1.0</TargetName>
+ <TargetName Condition="'$(Configuration)|$(Platform)'=='Release|x64'">libusb-1.0</TargetName>
+ </PropertyGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+ <ClCompile>
+ <Optimization>Disabled</Optimization>
+ <AdditionalIncludeDirectories>.;..\libusb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <PreprocessorDefinitions>_WIN32;_DEBUG;_LIB;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ </ClCompile>
+ <Link>
+ <OutputFile>$(OutDir)libusb-1.0.dll</OutputFile>
+ <ModuleDefinitionFile>..\libusb\libusb-1.0.def</ModuleDefinitionFile>
+ <EmbedManagedResourceFile>libusb-1.0.rc;%(EmbedManagedResourceFile)</EmbedManagedResourceFile>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+ <Midl>
+ <TargetEnvironment>X64</TargetEnvironment>
+ </Midl>
+ <ClCompile>
+ <Optimization>Disabled</Optimization>
+ <AdditionalIncludeDirectories>.;..\libusb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <PreprocessorDefinitions>_WIN32;_WIN64;_DEBUG;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ </ClCompile>
+ <Link>
+ <OutputFile>$(OutDir)libusb-1.0.dll</OutputFile>
+ <ModuleDefinitionFile>..\libusb\libusb-1.0.def</ModuleDefinitionFile>
+ <EmbedManagedResourceFile>libusb-1.0.rc;%(EmbedManagedResourceFile)</EmbedManagedResourceFile>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <ClCompile>
+ <AdditionalIncludeDirectories>.;..\libusb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <PreprocessorDefinitions>_WIN32;_LIB;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ </ClCompile>
+ <Link>
+ <OutputFile>$(OutDir)libusb-1.0.dll</OutputFile>
+ <ModuleDefinitionFile>..\libusb\libusb-1.0.def</ModuleDefinitionFile>
+ <EmbedManagedResourceFile>libusb-1.0.rc;%(EmbedManagedResourceFile)</EmbedManagedResourceFile>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+ <Midl>
+ <TargetEnvironment>X64</TargetEnvironment>
+ </Midl>
+ <ClCompile>
+ <AdditionalIncludeDirectories>.;..\libusb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <PreprocessorDefinitions>_WIN32;_WIN64;_LIB;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ </ClCompile>
+ <Link>
+ <OutputFile>$(OutDir)libusb-1.0.dll</OutputFile>
+ <ModuleDefinitionFile>..\libusb\libusb-1.0.def</ModuleDefinitionFile>
+ <EmbedManagedResourceFile>libusb-1.0.rc;%(EmbedManagedResourceFile)</EmbedManagedResourceFile>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemGroup>
+ <ClCompile Include="..\libusb\core.c" />
+ <ClCompile Include="..\libusb\descriptor.c" />
+ <ClCompile Include="..\libusb\io.c" />
+ <ClCompile Include="..\libusb\os\poll_windows.c" />
+ <ClCompile Include="..\libusb\sync.c" />
+ <ClCompile Include="..\libusb\os\threads_windows.c" />
+ <ClCompile Include="..\libusb\os\windows_usb.c" />
+ </ItemGroup>
+ <ItemGroup>
+ <ClInclude Include=".\config.h" />
+ <ClInclude Include="..\libusb\libusb.h" />
+ <ClInclude Include="..\libusb\libusbi.h" />
+ <ClInclude Include="..\libusb\os\poll_windows.h" />
+ <ClInclude Include="..\libusb\os\threads_windows.h" />
+ <ClInclude Include="..\libusb\os\windows_usb.h" />
+ </ItemGroup>
+ <ItemGroup>
+ <None Include="..\libusb\libusb-1.0.def" />
+ </ItemGroup>
+ <ItemGroup>
+ <ResourceCompile Include="..\libusb\libusb-1.0.rc" />
+ </ItemGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+ <ImportGroup Label="ExtensionTargets">
+ </ImportGroup>
+</Project>
diff --git a/msvc/libusb_dll.vcxproj.filters b/msvc/libusb_dll.vcxproj.filters new file mode 100644 index 0000000..1078ae1 --- /dev/null +++ b/msvc/libusb_dll.vcxproj.filters @@ -0,0 +1,69 @@ +<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup>
+ <Filter Include="Source Files">
+ <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+ <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+ </Filter>
+ <Filter Include="Header Files">
+ <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+ <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
+ </Filter>
+ <Filter Include="Resource Files">
+ <UniqueIdentifier>{d81e81ca-b13e-4a15-b54b-b12b41361e6b}</UniqueIdentifier>
+ </Filter>
+ </ItemGroup>
+ <ItemGroup>
+ <ClCompile Include="..\libusb\core.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\libusb\descriptor.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\libusb\io.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\libusb\os\poll_windows.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\libusb\sync.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\libusb\os\threads_windows.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\libusb\os\windows_usb.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ </ItemGroup>
+ <ItemGroup>
+ <ClInclude Include=".\config.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ <ClInclude Include="..\libusb\libusb.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ <ClInclude Include="..\libusb\libusbi.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ <ClInclude Include="..\libusb\os\poll_windows.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ <ClInclude Include="..\libusb\os\threads_windows.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ <ClInclude Include="..\libusb\os\windows_usb.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ </ItemGroup>
+ <ItemGroup>
+ <None Include="..\libusb\libusb-1.0.def">
+ <Filter>Resource Files</Filter>
+ </None>
+ </ItemGroup>
+ <ItemGroup>
+ <ResourceCompile Include="..\libusb\libusb-1.0.rc">
+ <Filter>Resource Files</Filter>
+ </ResourceCompile>
+ </ItemGroup>
+</Project>
diff --git a/msvc/libusb_sources b/msvc/libusb_sources new file mode 100644 index 0000000..8e8e65c --- /dev/null +++ b/msvc/libusb_sources @@ -0,0 +1,36 @@ +#TARGETTYPE is not defined, to allow selection between static lib or DLL with ddk_build +TARGETNAME=libusb-1.0 +DLLDEF=..\libusb-1.0.def + +!IFNDEF MSC_WARNING_LEVEL +MSC_WARNING_LEVEL=/W3 +!ENDIF + +!IFDEF STATIC_LIBC +USE_LIBCMT=1 +!ELSE +USE_MSVCRT=1 +!ENDIF + +INCLUDES=..;..\..\msvc;$(DDK_INC_PATH) +C_DEFINES= $(C_DEFINES) $(LIBUSB_DEFINES) /DDDKBUILD + +# http://jpassing.com/2009/10/21/ltcg-issues-with-the-win7amd64-environment-of-wdk-7600/ +# prevents the following error when using the 64 bit static lib with Visual Studio 2010: +# "fatal error C1001: An internal error has occurred in the compiler. +# (compiler file 'f:\dd\vctools\compiler\utc\src\p2\p2symtab.c', line 1823)" +# and the following with Visual Studio 2010: +# "fatal error C1047: The object or library file 'libusb-1.0.lib' was created with +# an older compiler than other objects; rebuild old objects and libraries" +USER_C_FLAGS=/GL- + +TARGETLIBS=$(SDK_LIB_PATH)\kernel32.lib + +SOURCES=..\core.c \ + ..\descriptor.c \ + ..\io.c \ + ..\sync.c \ + threads_windows.c \ + poll_windows.c \ + windows_usb.c \ + ..\libusb-1.0.rc diff --git a/msvc/libusb_static.dsp b/msvc/libusb_static.dsp new file mode 100644 index 0000000..007fcc7 --- /dev/null +++ b/msvc/libusb_static.dsp @@ -0,0 +1,170 @@ +# Microsoft Developer Studio Project File - Name="libusb_static" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Static Library" 0x0104
+
+CFG=libusb_static - Win32 Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE
+!MESSAGE NMAKE /f "libusb_static.mak".
+!MESSAGE
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE
+!MESSAGE NMAKE /f "libusb_static.mak" CFG="libusb_static - Win32 Debug"
+!MESSAGE
+!MESSAGE Possible choices for configuration are:
+!MESSAGE
+!MESSAGE "libusb_static - Win32 Release" (based on "Win32 (x86) Static Library")
+!MESSAGE "libusb_static - Win32 Debug" (based on "Win32 (x86) Static Library")
+!MESSAGE
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF "$(CFG)" == "libusb_static - Win32 Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "../Win32/Release/lib"
+# PROP Intermediate_Dir "../Win32/Release/lib"
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_LIB" /YX /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "." /I "../libusb" /D "WIN32" /D "NDEBUG" /D "_UNICODE" /D "UNICODE" /U "_MBCS" /D "_LIB" /FR /FD /EHsc /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=link.exe -lib
+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo /out:"../Win32/Release/lib/libusb-1.0.lib"
+
+!ELSEIF "$(CFG)" == "libusb_static - Win32 Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "../Win32/Debug/lib"
+# PROP Intermediate_Dir "../Win32/Debug/lib"
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_LIB" /YX /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /GX /ZI /Od /I "." /I "../libusb" /D "WIN32" /D "_DEBUG" /D "_UNICODE" /D "UNICODE" /U "_MBCS" /D "_LIB" /FR /FD /GZ /EHsc /c
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo /n
+LIB32=link.exe -lib
+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo /out:"../Win32/Debug/lib/libusb-1.0.lib"
+
+!ENDIF
+
+# Begin Target
+
+# Name "libusb_static - Win32 Release"
+# Name "libusb_static - Win32 Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE=..\libusb\core.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\darwin_usb.c
+# PROP Exclude_From_Build 1
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\descriptor.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\io.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\linux_usbfs.c
+# PROP Exclude_From_Build 1
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\poll_windows.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\sync.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\threads_windows.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\windows_usb.c
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# Begin Source File
+
+SOURCE=.\config.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\darwin_usb.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\libusb.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\libusbi.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\linux_usbfs.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\poll_posix.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\poll_windows.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\threads_posix.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\threads_windows.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\libusb\os\windows_usb.h
+# End Source File
+# End Group
+# End Target
+# End Project
diff --git a/msvc/libusb_static.vcproj b/msvc/libusb_static.vcproj new file mode 100644 index 0000000..bd0ca52 --- /dev/null +++ b/msvc/libusb_static.vcproj @@ -0,0 +1,346 @@ +<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+ ProjectType="Visual C++"
+ Version="8.00"
+ Name="libusb-1.0 (static)"
+ ProjectGUID="{5AB6B770-1925-48D5-ABC2-930F3259C020}"
+ RootNamespace="libusb"
+ Keyword="Win32Proj"
+ >
+ <Platforms>
+ <Platform
+ Name="Win32"
+ />
+ <Platform
+ Name="x64"
+ />
+ </Platforms>
+ <ToolFiles>
+ </ToolFiles>
+ <Configurations>
+ <Configuration
+ Name="Debug|Win32"
+ OutputDirectory="..\$(PlatformName)\$(ConfigurationName)\lib"
+ IntermediateDirectory="..\$(PlatformName)\$(ConfigurationName)\lib\libusb-1.0"
+ ConfigurationType="4"
+ CharacterSet="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories=".;..\libusb"
+ PreprocessorDefinitions="WIN32;_DEBUG;_LIB;_CRT_SECURE_NO_WARNINGS"
+ MinimalRebuild="true"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="3"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="false"
+ DebugInformationFormat="4"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLibrarianTool"
+ OutputFile="$(OutDir)\libusb-1.0.lib"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Release|Win32"
+ OutputDirectory="..\$(PlatformName)\$(ConfigurationName)\lib"
+ IntermediateDirectory="..\$(PlatformName)\$(ConfigurationName)\lib\libusb-1.0"
+ ConfigurationType="4"
+ CharacterSet="1"
+ WholeProgramOptimization="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ AdditionalIncludeDirectories=".;..\libusb"
+ PreprocessorDefinitions="WIN32;NDEBUG;_LIB;_CRT_SECURE_NO_WARNINGS"
+ RuntimeLibrary="2"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="false"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLibrarianTool"
+ OutputFile="$(OutDir)\libusb-1.0.lib"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Debug|x64"
+ OutputDirectory="..\$(PlatformName)\$(ConfigurationName)\lib"
+ IntermediateDirectory="..\$(PlatformName)\$(ConfigurationName)\lib\libusb-1.0"
+ ConfigurationType="4"
+ CharacterSet="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ TargetEnvironment="3"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories=".;..\libusb"
+ PreprocessorDefinitions="WIN32;_DEBUG;_LIB;_CRT_SECURE_NO_WARNINGS"
+ MinimalRebuild="true"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="3"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="false"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLibrarianTool"
+ OutputFile="$(OutDir)\libusb-1.0.lib"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Release|x64"
+ OutputDirectory="..\$(PlatformName)\$(ConfigurationName)\lib"
+ IntermediateDirectory="..\$(PlatformName)\$(ConfigurationName)\lib\libusb-1.0"
+ ConfigurationType="4"
+ CharacterSet="1"
+ WholeProgramOptimization="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ TargetEnvironment="3"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ AdditionalIncludeDirectories=".;..\libusb"
+ PreprocessorDefinitions="WIN32;NDEBUG;_LIB;_CRT_SECURE_NO_WARNINGS"
+ RuntimeLibrary="2"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="false"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLibrarianTool"
+ OutputFile="$(OutDir)\libusb-1.0.lib"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ </Configurations>
+ <References>
+ </References>
+ <Files>
+ <Filter
+ Name="Source Files"
+ Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
+ UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
+ >
+ <File
+ RelativePath="..\libusb\core.c"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\descriptor.c"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\io.c"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\sync.c"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\os\threads_windows.c"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\os\poll_windows.c"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\os\windows_usb.c"
+ >
+ </File>
+ </Filter>
+ <Filter
+ Name="Header Files"
+ Filter="h;hpp;hxx;hm;inl;inc;xsd"
+ UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
+ >
+ <File
+ RelativePath=".\config.h"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\libusb.h"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\libusbi.h"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\os\threads_windows.h"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\os\poll_windows.h"
+ >
+ </File>
+ <File
+ RelativePath="..\libusb\os\windows_usb.h"
+ >
+ </File>
+ </Filter>
+ </Files>
+ <Globals>
+ </Globals>
+</VisualStudioProject>
diff --git a/msvc/libusb_static.vcxproj b/msvc/libusb_static.vcxproj new file mode 100644 index 0000000..63fb20b --- /dev/null +++ b/msvc/libusb_static.vcxproj @@ -0,0 +1,150 @@ +<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup Label="ProjectConfigurations">
+ <ProjectConfiguration Include="Debug|Win32">
+ <Configuration>Debug</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Debug|x64">
+ <Configuration>Debug</Configuration>
+ <Platform>x64</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Release|Win32">
+ <Configuration>Release</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Release|x64">
+ <Configuration>Release</Configuration>
+ <Platform>x64</Platform>
+ </ProjectConfiguration>
+ </ItemGroup>
+ <PropertyGroup Label="Globals">
+ <ProjectName>libusb-1.0 (static)</ProjectName>
+ <ProjectGuid>{349EE8F9-7D25-4909-AAF5-FF3FADE72187}</ProjectGuid>
+ <RootNamespace>libusb</RootNamespace>
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+ <ConfigurationType>StaticLibrary</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+ <ConfigurationType>StaticLibrary</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+ <ConfigurationType>StaticLibrary</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+ <ConfigurationType>StaticLibrary</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+ <ImportGroup Label="ExtensionSettings">
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <PropertyGroup Label="UserMacros" />
+ <PropertyGroup>
+ <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+ <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(SolutionDir)..\$(Platform)\$(Configuration)\lib\</OutDir>
+ <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(SolutionDir)..\$(Platform)\$(Configuration)\lib\libusb-1.0\</IntDir>
+ <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(SolutionDir)..\$(Platform)\$(Configuration)\lib\</OutDir>
+ <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(SolutionDir)..\$(Platform)\$(Configuration)\lib\libusb-1.0\</IntDir>
+ <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(SolutionDir)..\$(Platform)\$(Configuration)\lib\</OutDir>
+ <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(SolutionDir)..\$(Platform)\$(Configuration)\lib\libusb-1.0\</IntDir>
+ <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(SolutionDir)..\$(Platform)\$(Configuration)\lib\</OutDir>
+ <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(SolutionDir)..\$(Platform)\$(Configuration)\lib\libusb-1.0\</IntDir>
+ <TargetName Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">libusb-1.0</TargetName>
+ <TargetName Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">libusb-1.0</TargetName>
+ <TargetName Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">libusb-1.0</TargetName>
+ <TargetName Condition="'$(Configuration)|$(Platform)'=='Release|x64'">libusb-1.0</TargetName>
+ </PropertyGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+ <ClCompile>
+ <Optimization>Disabled</Optimization>
+ <AdditionalIncludeDirectories>.;..\libusb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <PreprocessorDefinitions>_WIN32;_DEBUG;_LIB;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ </ClCompile>
+ <Lib>
+ <OutputFile>$(OutDir)libusb-1.0.lib</OutputFile>
+ </Lib>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+ <Midl>
+ <TargetEnvironment>X64</TargetEnvironment>
+ </Midl>
+ <ClCompile>
+ <Optimization>Disabled</Optimization>
+ <AdditionalIncludeDirectories>.;..\libusb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <PreprocessorDefinitions>_WIN32;_WIN64;_DEBUG;_LIB;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ </ClCompile>
+ <Lib>
+ <OutputFile>$(OutDir)libusb-1.0.lib</OutputFile>
+ </Lib>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <ClCompile>
+ <AdditionalIncludeDirectories>.;..\libusb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <PreprocessorDefinitions>_WIN32;_LIB;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ </ClCompile>
+ <Lib>
+ <OutputFile>$(OutDir)libusb-1.0.lib</OutputFile>
+ </Lib>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+ <Midl>
+ <TargetEnvironment>X64</TargetEnvironment>
+ </Midl>
+ <ClCompile>
+ <AdditionalIncludeDirectories>.;..\libusb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <PreprocessorDefinitions>_WIN32;_WIN64;_LIB;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ </ClCompile>
+ <Lib>
+ <OutputFile>$(OutDir)libusb-1.0.lib</OutputFile>
+ </Lib>
+ </ItemDefinitionGroup>
+ <ItemGroup>
+ <ClCompile Include="..\libusb\core.c" />
+ <ClCompile Include="..\libusb\descriptor.c" />
+ <ClCompile Include="..\libusb\io.c" />
+ <ClCompile Include="..\libusb\os\poll_windows.c" />
+ <ClCompile Include="..\libusb\sync.c" />
+ <ClCompile Include="..\libusb\os\threads_windows.c" />
+ <ClCompile Include="..\libusb\os\windows_usb.c" />
+ </ItemGroup>
+ <ItemGroup>
+ <ClInclude Include=".\config.h" />
+ <ClInclude Include="..\libusb\libusb.h" />
+ <ClInclude Include="..\libusb\libusbi.h" />
+ <ClInclude Include="..\libusb\os\poll_windows.h" />
+ <ClInclude Include="..\libusb\os\threads_windows.h" />
+ <ClInclude Include="..\libusb\os\windows_usb.h" />
+ </ItemGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+ <ImportGroup Label="ExtensionTargets">
+ </ImportGroup>
+</Project>
diff --git a/msvc/libusb_static.vcxproj.filters b/msvc/libusb_static.vcxproj.filters new file mode 100644 index 0000000..11fe1fb --- /dev/null +++ b/msvc/libusb_static.vcxproj.filters @@ -0,0 +1,56 @@ +<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup>
+ <Filter Include="Source Files">
+ <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+ <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+ </Filter>
+ <Filter Include="Header Files">
+ <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+ <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
+ </Filter>
+ </ItemGroup>
+ <ItemGroup>
+ <ClCompile Include="..\libusb\core.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\libusb\descriptor.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\libusb\io.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\libusb\os\poll_windows.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\libusb\sync.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\libusb\os\threads_windows.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\libusb\os\windows_usb.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ </ItemGroup>
+ <ItemGroup>
+ <ClInclude Include=".\config.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ <ClInclude Include="..\libusb\libusb.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ <ClInclude Include="..\libusb\libusbi.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ <ClInclude Include="..\libusb\os\poll_windows.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ <ClInclude Include="..\libusb\os\threads_windows.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ <ClInclude Include="..\libusb\os\windows_usb.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ </ItemGroup>
+</Project>
diff --git a/msvc/libusb_vs2005.sln b/msvc/libusb_vs2005.sln new file mode 100644 index 0000000..6ebb5e6 --- /dev/null +++ b/msvc/libusb_vs2005.sln @@ -0,0 +1,61 @@ +
+Microsoft Visual Studio Solution File, Format Version 9.00
+# Visual Studio 2005
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libusb-1.0 (static)", "libusb_static.vcproj", "{5AB6B770-1925-48D5-ABC2-930F3259C020}"
+ ProjectSection(WebsiteProperties) = preProject
+ Debug.AspNetCompiler.Debug = "True"
+ Release.AspNetCompiler.Debug = "False"
+ EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libusb-1.0 (dll)", "libusb_dll.vcproj", "{8224C054-5968-4238-832C-167155E7ECC3}"
+ ProjectSection(WebsiteProperties) = preProject
+ Debug.AspNetCompiler.Debug = "True"
+ Release.AspNetCompiler.Debug = "False"
+ EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "listdevs", "listdevs.vcproj", "{98CFD8FA-EE20-40D5-AF13-F8C4856D6CA5}"
+ ProjectSection(WebsiteProperties) = preProject
+ Debug.AspNetCompiler.Debug = "True"
+ Release.AspNetCompiler.Debug = "False"
+ EndProjectSection
+ ProjectSection(ProjectDependencies) = postProject
+ {5AB6B770-1925-48D5-ABC2-930F3259C020} = {5AB6B770-1925-48D5-ABC2-930F3259C020}
+ EndProjectSection
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Win32 = Debug|Win32
+ Debug|x64 = Debug|x64
+ Release|Win32 = Release|Win32
+ Release|x64 = Release|x64
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {5AB6B770-1925-48D5-ABC2-930F3259C020}.Debug|Win32.ActiveCfg = Debug|Win32
+ {5AB6B770-1925-48D5-ABC2-930F3259C020}.Debug|Win32.Build.0 = Debug|Win32
+ {5AB6B770-1925-48D5-ABC2-930F3259C020}.Debug|x64.ActiveCfg = Debug|x64
+ {5AB6B770-1925-48D5-ABC2-930F3259C020}.Debug|x64.Build.0 = Debug|x64
+ {5AB6B770-1925-48D5-ABC2-930F3259C020}.Release|Win32.ActiveCfg = Release|Win32
+ {5AB6B770-1925-48D5-ABC2-930F3259C020}.Release|Win32.Build.0 = Release|Win32
+ {5AB6B770-1925-48D5-ABC2-930F3259C020}.Release|x64.ActiveCfg = Release|x64
+ {5AB6B770-1925-48D5-ABC2-930F3259C020}.Release|x64.Build.0 = Release|x64
+ {8224C054-5968-4238-832C-167155E7ECC3}.Debug|Win32.ActiveCfg = Debug|Win32
+ {8224C054-5968-4238-832C-167155E7ECC3}.Debug|Win32.Build.0 = Debug|Win32
+ {8224C054-5968-4238-832C-167155E7ECC3}.Debug|x64.ActiveCfg = Debug|x64
+ {8224C054-5968-4238-832C-167155E7ECC3}.Debug|x64.Build.0 = Debug|x64
+ {8224C054-5968-4238-832C-167155E7ECC3}.Release|Win32.ActiveCfg = Release|Win32
+ {8224C054-5968-4238-832C-167155E7ECC3}.Release|Win32.Build.0 = Release|Win32
+ {8224C054-5968-4238-832C-167155E7ECC3}.Release|x64.ActiveCfg = Release|x64
+ {8224C054-5968-4238-832C-167155E7ECC3}.Release|x64.Build.0 = Release|x64
+ {98CFD8FA-EE20-40D5-AF13-F8C4856D6CA5}.Debug|Win32.ActiveCfg = Debug|Win32
+ {98CFD8FA-EE20-40D5-AF13-F8C4856D6CA5}.Debug|Win32.Build.0 = Debug|Win32
+ {98CFD8FA-EE20-40D5-AF13-F8C4856D6CA5}.Debug|x64.ActiveCfg = Debug|x64
+ {98CFD8FA-EE20-40D5-AF13-F8C4856D6CA5}.Debug|x64.Build.0 = Debug|x64
+ {98CFD8FA-EE20-40D5-AF13-F8C4856D6CA5}.Release|Win32.ActiveCfg = Release|Win32
+ {98CFD8FA-EE20-40D5-AF13-F8C4856D6CA5}.Release|Win32.Build.0 = Release|Win32
+ {98CFD8FA-EE20-40D5-AF13-F8C4856D6CA5}.Release|x64.ActiveCfg = Release|x64
+ {98CFD8FA-EE20-40D5-AF13-F8C4856D6CA5}.Release|x64.Build.0 = Release|x64
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+EndGlobal
diff --git a/msvc/libusb_vs2010.sln b/msvc/libusb_vs2010.sln new file mode 100644 index 0000000..1160f52 --- /dev/null +++ b/msvc/libusb_vs2010.sln @@ -0,0 +1,49 @@ +Microsoft Visual Studio Solution File, Format Version 11.00
+# Visual Studio 2010
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libusb-1.0 (static)", "libusb_static.vcxproj", "{349EE8F9-7D25-4909-AAF5-FF3FADE72187}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libusb-1.0 (dll)", "libusb_dll.vcxproj", "{349EE8FA-7D25-4909-AAF5-FF3FADE72187}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "listdevs", "listdevs.vcxproj", "{F4938DB0-3DE7-4737-9C5A-EAD1BE819F87}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Win32 = Debug|Win32
+ Debug|x64 = Debug|x64
+ Release|Win32 = Release|Win32
+ Release|x64 = Release|x64
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {349EE8F9-7D25-4909-AAF5-FF3FADE72187}.Debug|Win32.ActiveCfg = Debug|Win32
+ {349EE8F9-7D25-4909-AAF5-FF3FADE72187}.Debug|Win32.Build.0 = Debug|Win32
+ {349EE8F9-7D25-4909-AAF5-FF3FADE72187}.Debug|x64.ActiveCfg = Debug|x64
+ {349EE8F9-7D25-4909-AAF5-FF3FADE72187}.Debug|x64.Build.0 = Debug|x64
+ {349EE8F9-7D25-4909-AAF5-FF3FADE72187}.Release|Win32.ActiveCfg = Release|Win32
+ {349EE8F9-7D25-4909-AAF5-FF3FADE72187}.Release|Win32.Build.0 = Release|Win32
+ {349EE8F9-7D25-4909-AAF5-FF3FADE72187}.Release|x64.ActiveCfg = Release|x64
+ {349EE8F9-7D25-4909-AAF5-FF3FADE72187}.Release|x64.Build.0 = Release|x64
+ {349EE8FA-7D25-4909-AAF5-FF3FADE72187}.Debug|Win32.ActiveCfg = Debug|Win32
+ {349EE8FA-7D25-4909-AAF5-FF3FADE72187}.Debug|x64.ActiveCfg = Debug|x64
+ {349EE8FA-7D25-4909-AAF5-FF3FADE72187}.Release|Win32.ActiveCfg = Release|Win32
+ {349EE8FA-7D25-4909-AAF5-FF3FADE72187}.Release|x64.ActiveCfg = Release|x64
+ {F4938DB0-3DE7-4737-9C5A-EAD1BE819F87}.Debug|Win32.ActiveCfg = Debug|Win32
+ {F4938DB0-3DE7-4737-9C5A-EAD1BE819F87}.Debug|Win32.Build.0 = Debug|Win32
+ {F4938DB0-3DE7-4737-9C5A-EAD1BE819F87}.Debug|x64.ActiveCfg = Debug|x64
+ {F4938DB0-3DE7-4737-9C5A-EAD1BE819F87}.Debug|x64.Build.0 = Debug|x64
+ {F4938DB0-3DE7-4737-9C5A-EAD1BE819F87}.Release|Win32.ActiveCfg = Release|Win32
+ {F4938DB0-3DE7-4737-9C5A-EAD1BE819F87}.Release|Win32.Build.0 = Release|Win32
+ {F4938DB0-3DE7-4737-9C5A-EAD1BE819F87}.Release|x64.ActiveCfg = Release|x64
+ {F4938DB0-3DE7-4737-9C5A-EAD1BE819F87}.Release|x64.Build.0 = Release|x64
+ {3F3138D0-7AB7-4268-9BF3-1A3EA5503A11}.Debug|Win32.ActiveCfg = Debug|Win32
+ {3F3138D0-7AB7-4268-9BF3-1A3EA5503A11}.Debug|Win32.Build.0 = Debug|Win32
+ {3F3138D0-7AB7-4268-9BF3-1A3EA5503A11}.Debug|x64.ActiveCfg = Debug|x64
+ {3F3138D0-7AB7-4268-9BF3-1A3EA5503A11}.Debug|x64.Build.0 = Debug|x64
+ {3F3138D0-7AB7-4268-9BF3-1A3EA5503A11}.Release|Win32.ActiveCfg = Release|Win32
+ {3F3138D0-7AB7-4268-9BF3-1A3EA5503A11}.Release|Win32.Build.0 = Release|Win32
+ {3F3138D0-7AB7-4268-9BF3-1A3EA5503A11}.Release|x64.ActiveCfg = Release|x64
+ {3F3138D0-7AB7-4268-9BF3-1A3EA5503A11}.Release|x64.Build.0 = Release|x64
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+EndGlobal
diff --git a/msvc/listdevs.dsp b/msvc/listdevs.dsp new file mode 100644 index 0000000..2ed8aec --- /dev/null +++ b/msvc/listdevs.dsp @@ -0,0 +1,103 @@ +# Microsoft Developer Studio Project File - Name="listdevs" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Console Application" 0x0103
+
+CFG=listdevs - Win32 Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE
+!MESSAGE NMAKE /f "listdevs.mak".
+!MESSAGE
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE
+!MESSAGE NMAKE /f "listdevs.mak" CFG="listdevs - Win32 Debug"
+!MESSAGE
+!MESSAGE Possible choices for configuration are:
+!MESSAGE
+!MESSAGE "listdevs - Win32 Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "listdevs - Win32 Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF "$(CFG)" == "listdevs - Win32 Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "../Win32/Release/examples"
+# PROP Intermediate_Dir "../Win32/Release/examples/listdevs"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /YX /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "../libusb" /I "." /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_UNICODE" /D "UNICODE" /U "_MBCS" /FR /FD /EHsc /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib shell32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib shell32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib shell32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
+
+!ELSEIF "$(CFG)" == "listdevs - Win32 Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "../Win32/Debug/examples"
+# PROP Intermediate_Dir "../Win32/Debug/examples/listdevs"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /YX /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /GX /ZI /Od /I "../libusb" /I "." /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_UNICODE" /D "UNICODE" /U "_MBCS" /FR /FD /GZ /EHsc /c
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo /n "../Win32/Debug/dll/core.sbr" "../Win32/Debug/dll/descriptor.sbr" "../Win32/Debug/dll/io.sbr" "../Win32/Debug/dll/sync.sbr" "../Win32/Debug/dll/poll_windows.sbr" "../Win32/Debug/dll/threads_windows.sbr" "../Win32/Debug/dll/windows_usb.sbr"
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib shell32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib shell32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib shell32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386
+# SUBTRACT LINK32 /pdb:none
+
+!ENDIF
+
+# Begin Target
+
+# Name "listdevs - Win32 Release"
+# Name "listdevs - Win32 Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE=..\examples\listdevs.c
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# End Group
+# Begin Group "Resource Files"
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+# End Group
+# End Target
+# End Project
diff --git a/msvc/listdevs.vcproj b/msvc/listdevs.vcproj new file mode 100644 index 0000000..cff754e --- /dev/null +++ b/msvc/listdevs.vcproj @@ -0,0 +1,360 @@ +<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+ ProjectType="Visual C++"
+ Version="8.00"
+ Name="listdevs"
+ ProjectGUID="{98CFD8FA-EE20-40D5-AF13-F8C4856D6CA5}"
+ RootNamespace="examples"
+ Keyword="Win32Proj"
+ >
+ <Platforms>
+ <Platform
+ Name="Win32"
+ />
+ <Platform
+ Name="x64"
+ />
+ </Platforms>
+ <ToolFiles>
+ </ToolFiles>
+ <Configurations>
+ <Configuration
+ Name="Debug|Win32"
+ OutputDirectory="..\$(PlatformName)\$(ConfigurationName)\examples"
+ IntermediateDirectory="..\$(PlatformName)\$(ConfigurationName)\examples\$(ProjectName)"
+ ConfigurationType="1"
+ CharacterSet="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories="..\libusb"
+ PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
+ MinimalRebuild="true"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="3"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="false"
+ DebugInformationFormat="4"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ LinkIncremental="2"
+ GenerateDebugInformation="true"
+ SubSystem="1"
+ TargetMachine="1"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Release|Win32"
+ OutputDirectory="..\$(PlatformName)\$(ConfigurationName)\examples"
+ IntermediateDirectory="..\$(PlatformName)\$(ConfigurationName)\examples\$(ProjectName)"
+ ConfigurationType="1"
+ CharacterSet="1"
+ WholeProgramOptimization="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ AdditionalIncludeDirectories="..\libusb"
+ PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
+ RuntimeLibrary="2"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="false"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ LinkIncremental="1"
+ GenerateDebugInformation="true"
+ SubSystem="1"
+ OptimizeReferences="2"
+ EnableCOMDATFolding="2"
+ TargetMachine="1"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Debug|x64"
+ OutputDirectory="..\$(PlatformName)\$(ConfigurationName)\examples"
+ IntermediateDirectory="..\$(PlatformName)\$(ConfigurationName)\examples\$(ProjectName)"
+ ConfigurationType="1"
+ CharacterSet="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ TargetEnvironment="3"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ AdditionalIncludeDirectories="..\libusb"
+ PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
+ MinimalRebuild="true"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="3"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="false"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ LinkIncremental="2"
+ GenerateDebugInformation="true"
+ SubSystem="1"
+ TargetMachine="17"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Release|x64"
+ OutputDirectory="..\$(PlatformName)\$(ConfigurationName)\examples"
+ IntermediateDirectory="..\$(PlatformName)\$(ConfigurationName)\examples\$(ProjectName)"
+ ConfigurationType="1"
+ CharacterSet="1"
+ WholeProgramOptimization="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ TargetEnvironment="3"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ AdditionalIncludeDirectories="..\libusb"
+ PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
+ RuntimeLibrary="2"
+ UsePrecompiledHeader="0"
+ WarningLevel="3"
+ Detect64BitPortabilityProblems="false"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ LinkIncremental="1"
+ GenerateDebugInformation="true"
+ SubSystem="1"
+ OptimizeReferences="2"
+ EnableCOMDATFolding="2"
+ TargetMachine="17"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCWebDeploymentTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ </Configurations>
+ <References>
+ </References>
+ <Files>
+ <Filter
+ Name="Source Files"
+ Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
+ UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
+ >
+ <File
+ RelativePath="..\examples\listdevs.c"
+ >
+ <FileConfiguration
+ Name="Release|Win32"
+ >
+ <Tool
+ Name="VCCLCompilerTool"
+ Detect64BitPortabilityProblems="false"
+ />
+ </FileConfiguration>
+ <FileConfiguration
+ Name="Release|x64"
+ >
+ <Tool
+ Name="VCCLCompilerTool"
+ Detect64BitPortabilityProblems="false"
+ />
+ </FileConfiguration>
+ </File>
+ </Filter>
+ </Files>
+ <Globals>
+ </Globals>
+</VisualStudioProject>
diff --git a/msvc/listdevs.vcxproj b/msvc/listdevs.vcxproj new file mode 100644 index 0000000..b0164bb --- /dev/null +++ b/msvc/listdevs.vcxproj @@ -0,0 +1,165 @@ +<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup Label="ProjectConfigurations">
+ <ProjectConfiguration Include="Debug|Win32">
+ <Configuration>Debug</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Debug|x64">
+ <Configuration>Debug</Configuration>
+ <Platform>x64</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Release|Win32">
+ <Configuration>Release</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Release|x64">
+ <Configuration>Release</Configuration>
+ <Platform>x64</Platform>
+ </ProjectConfiguration>
+ </ItemGroup>
+ <PropertyGroup Label="Globals">
+ <ProjectName>listdevs</ProjectName>
+ <ProjectGuid>{F4938DB0-3DE7-4737-9C5A-EAD1BE819F87}</ProjectGuid>
+ <RootNamespace>examples</RootNamespace>
+ <Keyword>Win32Proj</Keyword>
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <CharacterSet>Unicode</CharacterSet>
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+ <ImportGroup Label="ExtensionSettings">
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <PropertyGroup Label="UserMacros" />
+ <PropertyGroup>
+ <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+ <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(SolutionDir)..\$(Platform)\$(Configuration)\examples\</OutDir>
+ <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(SolutionDir)..\$(Platform)\$(Configuration)\examples\$(ProjectName)\</IntDir>
+ <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(SolutionDir)..\$(Platform)\$(Configuration)\examples\</OutDir>
+ <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(SolutionDir)..\$(Platform)\$(Configuration)\examples\$(ProjectName)\</IntDir>
+ <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(SolutionDir)..\$(Platform)\$(Configuration)\examples\</OutDir>
+ <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(SolutionDir)..\$(Platform)\$(Configuration)\examples\$(ProjectName)\</IntDir>
+ <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(SolutionDir)..\$(Platform)\$(Configuration)\examples\</OutDir>
+ <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(SolutionDir)..\$(Platform)\$(Configuration)\examples\$(ProjectName)\</IntDir>
+ </PropertyGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+ <BuildLog>
+ <Path>$(IntDir)$(ProjectName).htm</Path>
+ </BuildLog>
+ <ClCompile>
+ <Optimization>Disabled</Optimization>
+ <AdditionalIncludeDirectories>..\libusb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ </ClCompile>
+ <Link>
+ <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <ProgramDatabaseFile>$(TargetDir)$(ProjectName).pdb</ProgramDatabaseFile>
+ <SubSystem>Console</SubSystem>
+ <TargetMachine>MachineX86</TargetMachine>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+ <BuildLog>
+ <Path>$(IntDir)$(ProjectName).htm</Path>
+ </BuildLog>
+ <Midl>
+ <TargetEnvironment>X64</TargetEnvironment>
+ </Midl>
+ <ClCompile>
+ <Optimization>Disabled</Optimization>
+ <AdditionalIncludeDirectories>..\libusb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+ </ClCompile>
+ <Link>
+ <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <ProgramDatabaseFile>$(TargetDir)$(ProjectName).pdb</ProgramDatabaseFile>
+ <SubSystem>Console</SubSystem>
+ <TargetMachine>MachineX64</TargetMachine>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <BuildLog>
+ <Path>$(IntDir)$(ProjectName).htm</Path>
+ </BuildLog>
+ <ClCompile>
+ <AdditionalIncludeDirectories>..\libusb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ </ClCompile>
+ <Link>
+ <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+ <ProgramDatabaseFile>$(TargetDir)$(ProjectName).pdb</ProgramDatabaseFile>
+ <SubSystem>Console</SubSystem>
+ <TargetMachine>MachineX86</TargetMachine>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+ <BuildLog>
+ <Path>$(IntDir)$(ProjectName).htm</Path>
+ </BuildLog>
+ <Midl>
+ <TargetEnvironment>X64</TargetEnvironment>
+ </Midl>
+ <ClCompile>
+ <AdditionalIncludeDirectories>..\libusb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+ <WarningLevel>Level3</WarningLevel>
+ </ClCompile>
+ <Link>
+ <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+ <ProgramDatabaseFile>$(TargetDir)$(ProjectName).pdb</ProgramDatabaseFile>
+ <SubSystem>Console</SubSystem>
+ <TargetMachine>MachineX64</TargetMachine>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemGroup>
+ <ClCompile Include="..\examples\listdevs.c" />
+ </ItemGroup>
+ <ItemGroup>
+ <ProjectReference Include=".\libusb_static.vcxproj">
+ <Project>{349ee8f9-7d25-4909-aaf5-ff3fade72187}</Project>
+ <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+ </ProjectReference>
+ </ItemGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+ <ImportGroup Label="ExtensionTargets">
+ </ImportGroup>
+</Project>
diff --git a/msvc/listdevs.vcxproj.filters b/msvc/listdevs.vcxproj.filters new file mode 100644 index 0000000..856fc1c --- /dev/null +++ b/msvc/listdevs.vcxproj.filters @@ -0,0 +1,14 @@ +<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup>
+ <Filter Include="Source Files">
+ <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+ <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+ </Filter>
+ </ItemGroup>
+ <ItemGroup>
+ <ClCompile Include="..\examples\listdevs.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ </ItemGroup>
+</Project>
diff --git a/msvc/listdevs_sources b/msvc/listdevs_sources new file mode 100644 index 0000000..97a5723 --- /dev/null +++ b/msvc/listdevs_sources @@ -0,0 +1,19 @@ +TARGETNAME=listdevs +TARGETTYPE=PROGRAM +386_STDCALL=0 + +_NT_TARGET_VERSION= $(_NT_TARGET_VERSION_WINXP) +!IFNDEF MSC_WARNING_LEVEL +MSC_WARNING_LEVEL=/W3 +!ENDIF + +!IFDEF STATIC_LIBC +USE_LIBCMT=1 +!ELSE +USE_MSVCRT=1 +!ENDIF + +UMTYPE=console +INCLUDES=..\..\libusb;$(DDK_INC_PATH) +UMLIBS=..\..\libusb\os\obj$(BUILD_ALT_DIR)\*\libusb-1.0.lib +SOURCES=..\listdevs.c diff --git a/msvc/stdint.h b/msvc/stdint.h new file mode 100644 index 0000000..00988d9 --- /dev/null +++ b/msvc/stdint.h @@ -0,0 +1,256 @@ +/** + * This file has no copyright assigned and is placed in the Public Domain. + * This file was originally part of the w64 mingw-runtime package. + */ + +/* ISO C9x 7.18 Integer types <stdint.h> + * Based on ISO/IEC SC22/WG14 9899 Committee draft (SC22 N2794) + * + * THIS SOFTWARE IS NOT COPYRIGHTED + * + * Contributor: Danny Smith <danny_r_smith_2001@yahoo.co.nz> + * Modified for libusb/MSVC: Pete Batard <pbatard@gmail.com> + * + * This source code is offered for use in the public domain. You may + * use, modify or distribute it freely. + * + * This code is distributed in the hope that it will be useful but + * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY + * DISCLAIMED. This includes but is not limited to warranties of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Date: 2010-04-02 + */ + +#ifndef _MSC_VER +#error This header should only be used with Microsoft compilers +#endif + +#ifndef _STDINT_H +#define _STDINT_H + +#ifndef _INTPTR_T_DEFINED +#define _INTPTR_T_DEFINED +#ifndef __intptr_t_defined +#define __intptr_t_defined +#undef intptr_t +#ifdef _WIN64 + typedef __int64 intptr_t; +#else + typedef int intptr_t; +#endif /* _WIN64 */ +#endif /* __intptr_t_defined */ +#endif /* _INTPTR_T_DEFINED */ + +#ifndef _UINTPTR_T_DEFINED +#define _UINTPTR_T_DEFINED +#ifndef __uintptr_t_defined +#define __uintptr_t_defined +#undef uintptr_t +#ifdef _WIN64 + typedef unsigned __int64 uintptr_t; +#else + typedef unsigned int uintptr_t; +#endif /* _WIN64 */ +#endif /* __uintptr_t_defined */ +#endif /* _UINTPTR_T_DEFINED */ + +#ifndef _PTRDIFF_T_DEFINED +#define _PTRDIFF_T_DEFINED +#ifndef _PTRDIFF_T_ +#define _PTRDIFF_T_ +#undef ptrdiff_t +#ifdef _WIN64 + typedef __int64 ptrdiff_t; +#else + typedef int ptrdiff_t; +#endif /* _WIN64 */ +#endif /* _PTRDIFF_T_ */ +#endif /* _PTRDIFF_T_DEFINED */ + +#ifndef _WCHAR_T_DEFINED +#define _WCHAR_T_DEFINED +#ifndef __cplusplus + typedef unsigned short wchar_t; +#endif /* C++ */ +#endif /* _WCHAR_T_DEFINED */ + +#ifndef _WCTYPE_T_DEFINED +#define _WCTYPE_T_DEFINED +#ifndef _WINT_T +#define _WINT_T + typedef unsigned short wint_t; + typedef unsigned short wctype_t; +#endif /* _WINT_T */ +#endif /* _WCTYPE_T_DEFINED */ + +/* 7.18.1.1 Exact-width integer types */ +typedef __int8 int8_t; +typedef unsigned __int8 uint8_t; +typedef __int16 int16_t; +typedef unsigned __int16 uint16_t; +typedef __int32 int32_t; +typedef unsigned __int32 uint32_t; +typedef __int64 int64_t; +typedef unsigned __int64 uint64_t; + +/* 7.18.1.2 Minimum-width integer types */ +typedef signed char int_least8_t; +typedef unsigned char uint_least8_t; +typedef short int_least16_t; +typedef unsigned short uint_least16_t; +typedef int int_least32_t; +typedef unsigned uint_least32_t; +typedef __int64 int_least64_t; +typedef unsigned __int64 uint_least64_t; + +/* 7.18.1.3 Fastest minimum-width integer types + * Not actually guaranteed to be fastest for all purposes + * Here we use the exact-width types for 8 and 16-bit ints. + */ +typedef __int8 int_fast8_t; +typedef unsigned __int8 uint_fast8_t; +typedef __int16 int_fast16_t; +typedef unsigned __int16 uint_fast16_t; +typedef __int32 int_fast32_t; +typedef unsigned __int32 uint_fast32_t; +typedef __int64 int_fast64_t; +typedef unsigned __int64 uint_fast64_t; + +/* 7.18.1.5 Greatest-width integer types */ +typedef __int64 intmax_t; +typedef unsigned __int64 uintmax_t; + +/* 7.18.2 Limits of specified-width integer types */ + +/* 7.18.2.1 Limits of exact-width integer types */ +#define INT8_MIN (-128) +#define INT16_MIN (-32768) +#define INT32_MIN (-2147483647 - 1) +#define INT64_MIN (-9223372036854775807LL - 1) + +#define INT8_MAX 127 +#define INT16_MAX 32767 +#define INT32_MAX 2147483647 +#define INT64_MAX 9223372036854775807LL + +#define UINT8_MAX 255 +#define UINT16_MAX 65535 +#define UINT32_MAX 0xffffffffU /* 4294967295U */ +#define UINT64_MAX 0xffffffffffffffffULL /* 18446744073709551615ULL */ + +/* 7.18.2.2 Limits of minimum-width integer types */ +#define INT_LEAST8_MIN INT8_MIN +#define INT_LEAST16_MIN INT16_MIN +#define INT_LEAST32_MIN INT32_MIN +#define INT_LEAST64_MIN INT64_MIN + +#define INT_LEAST8_MAX INT8_MAX +#define INT_LEAST16_MAX INT16_MAX +#define INT_LEAST32_MAX INT32_MAX +#define INT_LEAST64_MAX INT64_MAX + +#define UINT_LEAST8_MAX UINT8_MAX +#define UINT_LEAST16_MAX UINT16_MAX +#define UINT_LEAST32_MAX UINT32_MAX +#define UINT_LEAST64_MAX UINT64_MAX + +/* 7.18.2.3 Limits of fastest minimum-width integer types */ +#define INT_FAST8_MIN INT8_MIN +#define INT_FAST16_MIN INT16_MIN +#define INT_FAST32_MIN INT32_MIN +#define INT_FAST64_MIN INT64_MIN + +#define INT_FAST8_MAX INT8_MAX +#define INT_FAST16_MAX INT16_MAX +#define INT_FAST32_MAX INT32_MAX +#define INT_FAST64_MAX INT64_MAX + +#define UINT_FAST8_MAX UINT8_MAX +#define UINT_FAST16_MAX UINT16_MAX +#define UINT_FAST32_MAX UINT32_MAX +#define UINT_FAST64_MAX UINT64_MAX + +/* 7.18.2.4 Limits of integer types capable of holding + object pointers */ +#ifdef _WIN64 +#define INTPTR_MIN INT64_MIN +#define INTPTR_MAX INT64_MAX +#define UINTPTR_MAX UINT64_MAX +#else +#define INTPTR_MIN INT32_MIN +#define INTPTR_MAX INT32_MAX +#define UINTPTR_MAX UINT32_MAX +#endif + +/* 7.18.2.5 Limits of greatest-width integer types */ +#define INTMAX_MIN INT64_MIN +#define INTMAX_MAX INT64_MAX +#define UINTMAX_MAX UINT64_MAX + +/* 7.18.3 Limits of other integer types */ +#ifdef _WIN64 +#define PTRDIFF_MIN INT64_MIN +#define PTRDIFF_MAX INT64_MAX +#else +#define PTRDIFF_MIN INT32_MIN +#define PTRDIFF_MAX INT32_MAX +#endif + +#define SIG_ATOMIC_MIN INT32_MIN +#define SIG_ATOMIC_MAX INT32_MAX + +#ifndef SIZE_MAX +#ifdef _WIN64 +#define SIZE_MAX UINT64_MAX +#else +#define SIZE_MAX UINT32_MAX +#endif +#endif + +#ifndef WCHAR_MIN /* also in wchar.h */ +#define WCHAR_MIN 0U +#define WCHAR_MAX 0xffffU +#endif + +/* + * wint_t is unsigned short for compatibility with MS runtime + */ +#define WINT_MIN 0U +#define WINT_MAX 0xffffU + + +/* 7.18.4 Macros for integer constants */ + +/* 7.18.4.1 Macros for minimum-width integer constants + + Accoding to Douglas Gwyn <gwyn@arl.mil>: + "This spec was changed in ISO/IEC 9899:1999 TC1; in ISO/IEC + 9899:1999 as initially published, the expansion was required + to be an integer constant of precisely matching type, which + is impossible to accomplish for the shorter types on most + platforms, because C99 provides no standard way to designate + an integer constant with width less than that of type int. + TC1 changed this to require just an integer constant + *expression* with *promoted* type." + + The trick used here is from Clive D W Feather. +*/ + +#define INT8_C(val) (INT_LEAST8_MAX-INT_LEAST8_MAX+(val)) +#define INT16_C(val) (INT_LEAST16_MAX-INT_LEAST16_MAX+(val)) +#define INT32_C(val) (INT_LEAST32_MAX-INT_LEAST32_MAX+(val)) +/* The 'trick' doesn't work in C89 for long long because, without + suffix, (val) will be evaluated as int, not intmax_t */ +#define INT64_C(val) val##i64 + +#define UINT8_C(val) (val) +#define UINT16_C(val) (val) +#define UINT32_C(val) (val##i32) +#define UINT64_C(val) val##ui64 + +/* 7.18.4.2 Macros for greatest-width integer constants */ +#define INTMAX_C(val) val##i64 +#define UINTMAX_C(val) val##ui64 + +#endif |