tests/shred/shred-remove.sh

   1 #!/bin/sh
   2 # Exercise shred --remove
   3
   4 # Copyright (C) 1999-2024 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 of the License, or
   9 # (at your option) 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 <https://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ shred
  21 skip_if_root_
  22
  23 # The length of the basename is what matters.
  24 # In this case, shred-4.0l would try to rename the file 256^10 times
  25 # before terminating.
  26 file=0123456789
  27 touch $file || framework_failure_
  28 chmod u-w $file || framework_failure_
  29
  30 # This would take so long that it appears to infloop
  31 # when using version from fileutils-4.0k.
  32 # When the command completes, expect it to fail.
  33 returns_ 1 shred -u $file > /dev/null 2>&1 || fail=1
  34 rm -f $file || framework_failure_
  35
  36 # Ensure all --remove methods at least unlink the file
  37 for mode in '' '=unlink' '=wipe' '=wipesync'; do
  38   touch $file || framework_failure_
  39   shred -n0 --remove"$mode" $file || fail=1
  40   test -e $file && fail=1
  41 done
  42
  43 # Ensure incorrect params are diagnosed
  44 touch $file || framework_failure_
  45 returns_ 1 shred -n0 --remove=none $file 2>/dev/null || fail=1
  46
  47 # Ensure rename passes complete.
  48 # coreutils-8.28 did not do the decreasing length rename
  49 # which may have leaked the length of the removed file name
  50  # test level exhaustion
  51 touch \
  52  0 1 2 3 4 5 6 7 8 9 \
  53  a b c d e f g h i j k l m n o p q r s t u v w x y z \
  54  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z _ || framework_failure_
  55 touch test 000 || framework_failure_  # test level increment
  56 shred -vu test 2>out || fail=1
  57 cat <<\EOF >exp || framework_failure_
  58 shred: test: removing
  59 shred: test: renamed to 0000
  60 shred: 0000: renamed to 001
  61 shred: 001: renamed to 00
  62 shred: test: removed
  63 EOF
  64 compare exp out || fail=1
  65
  66 # Ensure renames are only retried for EEXIST
  67 mkdir rodir && cd rodir && touch $file && chmod a-w . || framework_failure_
  68 returns_ 1 timeout 10 shred -u $file || fail=1
  69
  70 Exit $fail