| # ensure that mv doesn't first unlink its destination in one particular case | |
| # Copyright (C) 2006-2025 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_ mv | |
| require_strace_ unlink | |
| # Before the fix, mv would unnecessarily unlink the destination symlink: | |
| # $ rm -rf s[12]; ln -s / s1; ln -s /tmp s2 | |
| # $ strace -qe unlink /bin/mv -T s1 s2 | |
| # unlink("s2") = 0 | |
| # | |
| # With the fix, it doesn't call unlink: | |
| # $ rm -rf s[12]; ln -s / s1; ln -s /tmp s2 | |
| # $ strace -qe unlink ./mv -T s1 s2 | |
| # $ | |
| ln -s t1 s1 || framework_failure_ | |
| ln -s t2 s2 || framework_failure_ | |
| strace -qe unlink mv -T s1 s2 > out 2>&1 || fail=1 | |
| $EGREP 'unlink.*"s1"' out && fail=1 | |
| # Ensure that the source, s1, is gone. | |
| ls -dl s1 > /dev/null 2>&1 && fail=1 | |
| # Ensure that the destination, s2, contains the link from s1. | |
| test "$(readlink s2)" = t1 || fail=1 | |
| Exit $fail | |