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diff --git a/src/main/java/org/apache/commons/compress/archivers/dump/package.html b/src/main/java/org/apache/commons/compress/archivers/dump/package.html new file mode 100644 index 000000000..72f3c68c4 --- /dev/null +++ b/src/main/java/org/apache/commons/compress/archivers/dump/package.html @@ -0,0 +1,56 @@ +<html> +<!-- + + Licensed to the Apache Software Foundation (ASF) under one or more + contributor license agreements. See the NOTICE file distributed with + this work for additional information regarding copyright ownership. + The ASF licenses this file to You 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. + +--> + <body> + <p>This package provides stream classes for reading archives + using the Unix DUMP format. This format is similar to (and + contemporary with) TAR but reads the raw filesystem directly. + This means that writers are filesystem-specific even though the + created archives are filesystem-agnostic. + </p> + + <p>Unlike other formats DUMP offers clean support for sparse files, + extended attributes, and other file metadata. In addition DUMP + supports incremental dump files can capture (most) file deletion. + It also provides a native form of compression and will soon support + native encryption as well. + </p> + + <p>In practice TAR archives are used for both distribution + and backups. DUMP archives are used exclusively for backups. + </p> + + <p>Like any 30+-year-old application there are a number of variants. + For pragmatic reasons we will only support archives with the + 'new' tape header and inode formats. Other restrictions: + + <ul> + <li>We only support ZLIB compression. The format + also permits LZO and BZLIB compression.</li> + <li>Sparse files will have the holes filled.</li> + <li>MacOS finder and resource streams are ignored.</li> + <li>Extended attributes are not currently provided.</li> + <li>SELinux labels are not currently provided.</li> + </ul> + </p> + + <p>As of Apache Commons Compress 1.3 support for the dump format is + read-only.</p> + </body> +</html> |