tests/chmod/symlinks.sh

   1 #!/bin/sh
   2 # Verify chmod symlink handling options
   3
   4 # Copyright (C) 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 <http://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ chmod
  21
  22 #dirs
  23 mkdir -p a/b a/c || framework_failure_
  24 #files
  25 touch a/b/file a/c/file || framework_failure_
  26 #dangling link
  27 ln -s foo a/dangle || framework_failure_
  28 #link to file
  29 ln -s ../b/file a/c/link || framework_failure_
  30 #link to dir
  31 ln -s b a/dirlink || framework_failure_
  32
  33 # tree -F a
  34 #  a/
  35 #  |-- b/
  36 #  |   '-- file
  37 #  |-- c/
  38 #  |   |-- file
  39 #  |   '-- link -> ../b/file
  40 #  |-- dangle -> foo
  41 #  '-- dirlink -> b/
  42
  43 reset_modes() { chmod =777 a/b a/c a/b/file a/c/file || fail=1; }
  44 count_755() {
  45   test "$(grep 'rwxr-xr-x' 'out' | wc -l)" = "$1" || { cat out; fail=1; }
  46 }
  47
  48 reset_modes
  49 # -R (with default -H) does not deref traversed symlinks (only cli args)
  50 chmod 755 -R a/c || fail=1
  51 ls -l a/b > out || framework_failure_
  52 count_755 0
  53 ls -lR a/c > out || framework_failure_
  54 count_755 1
  55
  56 reset_modes
  57 # set a/c a/c/file and a/b/file (through symlink) to 755
  58 chmod 755 -LR a/c || fail=1
  59 ls -ld a/c a/c/file a/b/file > out || framework_failure_
  60 count_755 3
  61
  62 reset_modes
  63 # do not set /a/b/file through symlink (should try to chmod the link itself)
  64 chmod 755 -RP a/c/ || fail=1
  65 ls -l a/b > out || framework_failure_
  66 count_755 0
  67
  68 reset_modes
  69 # set /a/b/file through symlink
  70 chmod 755 --dereference a/c/link || fail=1
  71 ls -l a/b > out || framework_failure_
  72 count_755 1
  73
  74 reset_modes
  75 # do not set /a/b/file through symlink (should try to chmod the link itself)
  76 chmod 755 --no-dereference a/c/link 2>err || fail=1
  77 ls -l a/b > out || framework_failure_
  78 count_755 0
  79
  80 # Dangling links should not induce an error if not dereferencing
  81 for noderef in '-h' '-RP' '-P'; do
  82   chmod 755 --no-dereference a/dangle 2>err || fail=1
  83 done
  84 # Dangling links should induce an error if dereferencing
  85 for deref in '' '--deref' '-R'; do
  86   returns_ 1 chmod 755 $deref a/dangle 2>err || fail=1
  87 done
  88
  89 Exit $fail