1BackupPC::XS(3)       User Contributed Perl Documentation      BackupPC::XS(3)
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NAME

6       BackupPC::XS - Perl extension for BackupPC libraries
7

SYNOPSIS

9         use BackupPC::XS;
10         use BackupPC::XS qw( :all );
11

DESCRIPTION

13       BackupPC::XS provides various submodules that implement various
14       BackupPC library functions.  The following sections describe each
15       submodule.
16
17       This documentation is very terse.  BackupPC::XS is not intended to be a
18       general-purpose module - it is closely tied to BackupPC.  Look in the
19       BackupPC code to see examples of using this module.
20
21   BackupPC::XS::FileZIO
22       Compressed file I/O using zlib:
23
24           $fd = BackupPC::XS::FileZIO::open($fileName, $writeFlag, $compressLevel);
25           $fd = BackupPC::XS::FileZIO::fdopen($stream, $writeFlag, $compressLevel);
26           $nWrite   = $fd->write($dataRef);
27           $nRead    = $fd->read($dataRef, $maxRead);
28           $textLine = $fd->readLine();
29           $fd->rewind();
30           $fd->close();
31           $fd->writeTeeStderr($boolean);
32
33   BackupPC::XS::PoolRefCnt
34       Pool file reference counting:
35
36           $countDB = BackupPC::XS::PoolRefCnt::new(initialEntryCnt);
37           $refCount = $countDB->get($digest);
38           $countDB->set($digest, $refCount);
39           $countDB->delete($digest);
40           $countDB->incr($digest, $refIncr);
41           ($digest, $refCnt, $idx) = $countDB->iterate($idx);
42           $countDB->read($fileName);
43           $countDB->write($fileName);
44           $countDB->print();
45
46       Pool file delta accumulation:
47
48           BackupPC::XS::PoolRefCnt::DeltaFileInit($hostDir);
49           BackupPC::XS::PoolRefCnt::DeltaFileFlush();
50           BackupPC::XS::PoolRefCnt::DeltaUpdate($digest, $refIncr);
51           BackupPC::XS::PoolRefCnt::DeltaPrint();
52
53   BackupPC::XS::PoolWrite
54       Writing and matching files in the pool:
55
56           $poolWrite = BackupPC::XS::PoolWrite::new($compressLevel [, $digest]);
57           $poolWrite->write($dataRef);
58           ($match, $digest, $poolSize, $error) = $poolWrite->close();
59           $poolWrite->addToPool($fileName, $isV3PoolFile);
60
61   BackupPC::XS::Attrib
62       Manipulating a set of files and attributes (typically one directory's
63       worth):
64
65           $a = BackupPC::XS::Attrib::new($compressLevel);
66           $attrHash = $a->get($fileName);
67           $a->set($fileName, $attrHash);
68           $numDirEntries = $a->count();
69           $a->read($dirPath, $attribFileName);
70           $a->write($dirPath, $attribFileName);
71
72           $textType = BackupPC::XS::Attrib::fileType2Text(BPC_FTYPE_....);
73
74   BackupPC::XS::AttribCache
75       Maintain a cache of directories, with full share/path semantics.
76
77           $ac = BackupPC::XS::AttribCache::new($host, $backupNum, $shareNameUM, $compress);
78
79           $attrHash = $ac->get($fileName, $allocateIfMissing, $dontReadInode);
80           $ac->set($fileName, $attrHash, $dontOverwriteInode);
81           $ac->delete($fileName);
82
83           $attrHash = $ac->getInode($inode, $allocateIfMissing);
84           $ac->setInode($inode, $attrHash);
85           $ac->deleteInode($inode);
86
87           $ac->getAll($path, $dontReadInode);
88
89           $ac->flush($all, $path);
90           $ac->getFullMangledPath($path);
91
92   BackupPC::XS::DirOps
93           $zeroMeansOk = BackupPC::XS::DirOps::path_create($path);
94           $errorCnt = BackupPC::XS::DirOps::path_remove($path, $compress);
95
96           $errorCnt = BackupPC::XS::DirOps::refCountAll($path, $compress);
97
98           $lockFd = BackupPC::XS::DirOps::lockRangeFile($lockFile, $offset, $len, $block);
99           BackupPC::XS::DirOps::unlockRangeFile($lockFd);
100
101   BackupPC::XS::Lib
102           BackupPC::XS::Lib::ConfInit($topDir, $hardLinkMax, $poolV3Enabled, $logLevel)
103
104           $messageArrayRef = BackupPC::XS::Lib::logMsgGet();
105           $errorCnt = BackupPC::XS::Lib::logErrorCntGet;
106           BackupPC::XS::Lib::logLevelSet($level);
107

EXPORTS

109       If you specify :all (see SYNOPSIS), then the BPC_FTYPE_ values are
110       exported.
111

SEE ALSO

113       BackupPC, backuppc.sourceforge.net.
114
115       rsync-bpc.
116

AUTHOR

118       Craig Barratt, <cbarratt@users.sourceforge.net<gt>
119

121       BackupPC code is copyright (C) 2013-2017 Craig Barratt
122       <cbarratt@users.sourceforge.net>.
123
124       bpc_hashTable.c is based on code from rsync.  Rsync is Copyright (C)
125       1996-2001 by Andrew Tridgell, 1996 by Paul Mackerras, 2001-2002 by
126       Martin Pool, and 2003-2009 by Wayne Davison, and others.
127
128       The md5 library is from the rsync codebase, and is Copyright (C)
129       2001-2003 Christophe Devine.  See the code for the license.
130
131       The zlib library is from the rsync codebase, and is Copyright (C)
132       1995-2005 Jean-loup Gailly and Mark Adler.  See the code for the
133       license.
134
135       This program is free software; you can redistribute it and/or modify it
136       under the terms of the GNU General Public License as published by the
137       Free Software Foundation; either version 3 of the License, or (at your
138       option) any later version.
139
140       This program is distributed in the hope that it will be useful, but
141       WITHOUT ANY WARRANTY; without even the implied warranty of
142       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
143       General Public License for more details.
144
145       You should have received a copy of the GNU General Public License along
146       with this program; if not, visit the http://fsf.org website.
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150perl v5.28.1                      2019-04-08                   BackupPC::XS(3)
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