Dogcows Code - chaz/tar/blob - tests/extrac11.at

   1 # Process this file with autom4te to create testsuite. -*- Autotest -*-
   2
   3 # Test suite for GNU tar.
   4 # Copyright (C) 2010 Free Software Foundation, Inc.
   5
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3, or (at your option)
   9 # any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 # written by Paul Eggert
  20
  21 # Check that 'tar' works even in a file-descriptor-limited environment.
  22
  23 AT_SETUP([scarce file descriptors])
  24 AT_KEYWORDS([extract extrac11])
  25
  26 AT_TAR_CHECK([
  27 dirs='a
  28       a/b
  29       a/b/c
  30       a/b/c/d
  31       a/b/c/d/e
  32       a/b/c/d/e/f
  33       a/b/c/d/e/f/g
  34       a/b/c/d/e/f/g/h
  35       a/b/c/d/e/f/g/h/i
  36       a/b/c/d/e/f/g/h/i/j
  37       a/b/c/d/e/f/g/h/i/j/k
  38 '
  39 files=
  40 mkdir $dirs dest1 dest2 dest3 || exit
  41 for dir in $dirs; do
  42   for file in X Y Z; do
  43     echo $file >$dir/$file || exit
  44     files="$files $file"
  45   done
  46 done
  47
  48 # Check that "ulimit" itself works.
  49 ((ulimit -n 100 &&
  50   tar -cf archive1.tar a 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&- &&
  51   tar -xf archive1.tar -C dest1 a 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&-
  52  ) &&
  53  diff -r a dest1/a
  54 ) >/dev/null 2>&1 ||
  55    AT_SKIP_TEST
  56
  57 # Another test that "ulimit" itself works:
  58 # tar should fail when completely starved of file descriptors.
  59 ((ulimit -n 4 &&
  60   tar -cf archive2.tar a 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&- &&
  61   tar -xf archive2.tar -C dest2 a 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&-
  62  ) &&
  63  diff -r a dest2/a
  64 ) >/dev/null 2>&1 &&
  65    AT_SKIP_TEST
  66
  67 # Tar should work when there are few, but enough, file descriptors.
  68 ((ulimit -n 10 &&
  69   tar -cf archive3.tar a 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&- &&
  70   tar -xf archive3.tar -C dest3 a 3<&- 4<&- 5<&- 6<&- 7<&- 8<&- 9<&-
  71  ) &&
  72  diff -r a dest3/a >/dev/null 2>&1
  73 ) || { diff -r a dest3/a; exit 1; }
  74 ],
  75 [0],[],[],[],[],[gnu])
  76
  77 AT_CLEANUP