Dogcows Code - chaz/tar/blob - tests/append02.at

   1 # Process this file with autom4te to create testsuite. -*- Autotest -*-
   2
   3 # Test suite for GNU tar.
   4 # Copyright 2006-2007, 2009, 2013-2014 Free Software Foundation, Inc.
   5
   6 # This file is part of GNU tar.
   7
   8 # GNU tar is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 3 of the License, or
  11 # (at your option) any later version.
  12
  13 # GNU tar is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20
  21 # Using tar 1.15.x the following equivalent command sets:
  22 #
  23 #   1. tar cf archive file1 file2
  24 # and
  25 #   2. tar cfT archive /dev/null
  26 #      tar rf archive file1
  27 #      tar rt archive file2
  28 #
  29 # produced different archives (GNU format is assumed). It was reported
  30 # by TAMUKI Shoichi on 2006-07-21 [1].
  31 #
  32 # The bug was due to tar being unable to discern between GNU and OLDGNU
  33 # formats and always assuming the latter. The main difference between
  34 # the two is that OLDGNU preserves all bits in the mode field, whereas
  35 # GNU format keeps only the lower 9 ones (mode & 0777).
  36 #
  37 # This was fixed on 2006-07-24 (commit f4e4adea80a) by making tar truncate
  38 # the mode field even in OLDGNU format. Obviously, the fix broke the
  39 # format backward compatibility, but it went unnoticed until 2009-10-03
  40 # (after all, the OLDGNU format is not in much use nowadays), when
  41 # Igor Zhbanov reported it [2].
  42 #
  43 # The final fix was applied on 2009-10-04.
  44 #
  45 # References:
  46 # [1] <200607210526.AA03440@tamuki.linet.gr.jp>
  47 #     http://lists.gnu.org/archive/html/bug-tar/2006-07/msg00029.html
  48 # [2] <f44001920910020335v4cadfesf54f6593d5124814@mail.gmail.com>
  49 #     http://lists.gnu.org/archive/html/bug-tar/2009-10/msg00006.html
  50
  51 # The test case below verifies that the equivalent create and append commands
  52 # produce binary equivalent archives for all formats.
  53
  54 AT_SETUP([append vs. create])
  55 AT_KEYWORDS([append append02 append-gnu])
  56
  57 AT_TAR_CHECK([
  58 genfile --file file1
  59 genfile --file file2
  60
  61 # Make sure file timestamps in the archive will not differ
  62 MTIME="--mtime=@0"
  63
  64 # For PAX archives, we need to make sure extended header names are
  65 # reproducible and that their contents won't change with time
  66 if test $[]TEST_TAR_FORMAT = posix; then
  67   TAR_OPTIONS="$TAR_OPTIONS --pax-option=exthdr.name=%d/PaxHeaders/%f,delete=mtime,delete=atime,delete=ctime"
  68 fi
  69
  70 echo Creating archive.1
  71 tar $MTIME -cf archive.1 file1 file2
  72
  73 echo Creating archive.2
  74 tar $MTIME -cf archive.2 -T /dev/null
  75 tar $MTIME -rf archive.2 file1
  76 tar $MTIME -rf archive.2 file2
  77
  78 echo Comparing archives
  79 cmp archive.1 archive.2
  80 ],
  81 [0],
  82 [Creating archive.1
  83 Creating archive.2
  84 Comparing archives
  85 ])
  86
  87 AT_CLEANUP
  88
  89 # End of append02.at