diff options
Diffstat (limited to 'src/mount/linux.rs')
| -rw-r--r-- | src/mount/linux.rs | 54 |
1 files changed, 51 insertions, 3 deletions
diff --git a/src/mount/linux.rs b/src/mount/linux.rs index cf6a60b..e987603 100644 --- a/src/mount/linux.rs +++ b/src/mount/linux.rs @@ -1,9 +1,9 @@ -#![allow(missing_docs)] use crate::errno::Errno; use crate::{NixPath, Result}; use libc::{self, c_int, c_ulong}; libc_bitflags!( + /// Used with [`mount`]. pub struct MsFlags: c_ulong { /// Mount read-only MS_RDONLY; @@ -27,36 +27,80 @@ libc_bitflags!( MS_NODIRATIME; /// Linux 2.4.0 - Bind directory at different place MS_BIND; + /// Move an existing mount to a new location MS_MOVE; + /// Used to create a recursive bind mount. MS_REC; + /// Suppress the display of certain kernel warning messages. MS_SILENT; + /// VFS does not apply the umask MS_POSIXACL; + /// The resulting mount cannot subsequently be bind mounted. MS_UNBINDABLE; + /// Make this mount point private. MS_PRIVATE; + /// If this is a shared mount point that is a member of a peer group + /// that contains other members, convert it to a slave mount. MS_SLAVE; + /// Make this mount point shared. MS_SHARED; + /// When a file on this filesystem is accessed, update the file's + /// last access time (atime) only if the current value of atime is + /// less than or equal to the file's last modification time (mtime) or + /// last status change time (ctime). MS_RELATIME; + /// Mount request came from within the kernel + #[deprecated(since = "0.27.0", note = "Should only be used in-kernel")] MS_KERNMOUNT; + /// Update inode I_version field MS_I_VERSION; + /// Always update the last access time (atime) when files on this + /// filesystem are accessed. MS_STRICTATIME; + /// Reduce on-disk updates of inode timestamps (atime, mtime, ctime) by + /// maintaining these changes only in memory. MS_LAZYTIME; + #[deprecated(since = "0.27.0", note = "Should only be used in-kernel")] + #[allow(missing_docs)] // Not documented in Linux MS_ACTIVE; + #[deprecated(since = "0.27.0", note = "Should only be used in-kernel")] + #[allow(missing_docs)] // Not documented in Linux MS_NOUSER; + #[allow(missing_docs)] // Not documented in Linux; possibly kernel-only MS_RMT_MASK; + #[allow(missing_docs)] // Not documented in Linux; possibly kernel-only MS_MGC_VAL; + #[allow(missing_docs)] // Not documented in Linux; possibly kernel-only MS_MGC_MSK; } ); libc_bitflags!( + /// Used with [`umount2]. pub struct MntFlags: c_int { + /// Attempt to unmount even if still in use, aborting pending requests. MNT_FORCE; + /// Lazy unmount. Disconnect the file system immediately, but don't + /// actually unmount it until it ceases to be busy. MNT_DETACH; + /// Mark the mount point as expired. MNT_EXPIRE; + /// Don't dereference `target` if it is a symlink. UMOUNT_NOFOLLOW; } ); +/// Mount a file system. +/// +/// # Arguments +/// - `source` - Specifies the file system. e.g. `/dev/sd0`. +/// - `target` - Specifies the destination. e.g. `/mnt`. +/// - `fstype` - The file system type, e.g. `ext4`. +/// - `flags` - Optional flags controlling the mount. +/// - `data` - Optional file system specific data. +/// +/// # See Also +/// [`mount`](https://man7.org/linux/man-pages/man2/mount.2.html) pub fn mount< P1: ?Sized + NixPath, P2: ?Sized + NixPath, @@ -88,7 +132,7 @@ pub fn mount< s, t.as_ptr(), ty, - flags.bits, + flags.bits(), d as *const libc::c_void, ) }) @@ -99,6 +143,7 @@ pub fn mount< Errno::result(res).map(drop) } +/// Unmount the file system mounted at `target`. pub fn umount<P: ?Sized + NixPath>(target: &P) -> Result<()> { let res = target.with_nix_path(|cstr| unsafe { libc::umount(cstr.as_ptr()) })?; @@ -106,9 +151,12 @@ pub fn umount<P: ?Sized + NixPath>(target: &P) -> Result<()> { Errno::result(res).map(drop) } +/// Unmount the file system mounted at `target`. +/// +/// See also [`umount`](https://man7.org/linux/man-pages/man2/umount.2.html) pub fn umount2<P: ?Sized + NixPath>(target: &P, flags: MntFlags) -> Result<()> { let res = target.with_nix_path(|cstr| unsafe { - libc::umount2(cstr.as_ptr(), flags.bits) + libc::umount2(cstr.as_ptr(), flags.bits()) })?; Errno::result(res).map(drop) |