tests/chmod/c-option.sh

   1 #!/bin/sh
   2 # Verify that chmod's --changes (-c) option works.
   3
   4 # Copyright (C) 2000-2024 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_ chmod
  21
  22 umask 0
  23 file=f
  24 touch $file || framework_failure_
  25 chmod 444 $file || framework_failure_
  26
  27 skip_if_setgid_
  28
  29
  30 chmod u=rwx $file || fail=1
  31 chmod -c g=rwx $file > out || fail=1
  32 chmod -c g=rwx $file > empty || fail=1
  33
  34 compare /dev/null empty || fail=1
  35 case "$(cat out)" in
  36   "mode of 'f' changed from 0744 "?rwxr--r--?" to 0774 "?rwxrwxr--?) ;;
  37   *) cat out; fail=1 ;;
  38 esac
  39
  40 # From V5.1.0 to 8.22 this would stat the wrong file and
  41 # give an erroneous ENOENT diagnostic
  42 mkdir -p a/b || framework_failure_
  43 # chmod g+s might fail as detailed in setgid.sh
  44 # but we don't care about those edge cases here
  45 chmod g+s a/b
  46 # This should never warn, but it did when special
  47 # bits are set on b (the common case under test)
  48 chmod -c -R g+w a 2>err
  49 compare /dev/null err || fail=1
  50
  51 Exit $fail