tests/cp/attr-existing.sh

   1 #!/bin/sh
   2 # Make sure cp --attributes-only doesn't truncate existing data
   3
   4 # Copyright 2012-2024 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_ cp
  21
  22 printf '1' > file1 || framework_failure_
  23 printf '2' > file2 || framework_failure_
  24 printf '2' > file2.exp || framework_failure_
  25
  26 cp --attributes-only file1 file2 || fail=1
  27 cmp file2 file2.exp || fail=1
  28
  29 # coreutils v8.32 and before would remove destination files
  30 # if hardlinked or the source was not a regular file.
  31 ln file2 link2 || framework_failure_
  32 cp -a --attributes-only file1 file2 || fail=1
  33 cmp file2 file2.exp || fail=1
  34
  35 ln -s file1 sym1 || framework_failure_
  36 returns_ 1 cp -a --attributes-only sym1 file2 || fail=1
  37 cmp file2 file2.exp || fail=1
  38
  39 # One can still force removal though
  40 cp -a --remove-destination --attributes-only sym1 file2 || fail=1
  41 test -L file2 || fail=1
  42 cmp file1 file2 || fail=1
  43
  44 Exit $fail