| # ensure that cp does not write through a just-copied symlink | |
| # Copyright (C) 2007-2025 Free Software Foundation, Inc. | |
| # This program is free software: you can redistribute it and/or modify | |
| # it under the terms of the GNU General Public License as published by | |
| # the Free Software Foundation, either version 3 of the License, or | |
| # (at your option) any later version. | |
| # This program is distributed in the hope that it will be useful, | |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| # GNU General Public License for more details. | |
| # You should have received a copy of the GNU General Public License | |
| # along with this program. If not, see <https://www.gnu.org/licenses/>. | |
| . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src | |
| print_ver_ cp | |
| mkdir a b c || framework_failure_ | |
| ln -s ../t a/1 || framework_failure_ | |
| echo payload > b/1 || framework_failure_ | |
| echo "cp: will not copy 'b/1' through just-created symlink 'c/1'" \ | |
| > exp || framework_failure_ | |
| # Check both cases: a dangling symlink, and one pointing to a writable file. | |
| for i in dangling-dest existing-dest; do | |
| test $i = existing-dest && echo i > t | |
| test $i = dangling-dest && rm -f t | |
| cp -dR a/1 b/1 c 2> out && fail=1 | |
| compare exp out || fail=1 | |
| # When the destination is a dangling symlink, | |
| # ensure that cp does not create it. | |
| test $i = dangling-dest \ | |
| && test -f t && fail=1 | |
| # When the destination symlink points to a writable file, | |
| # ensure that cp does not change it. | |
| test $i = existing-dest \ | |
| && case $(cat t) in i);; *) fail=1;; esac | |
| done | |
| Exit $fail | |