2 # ensure that mv doesn't first unlink its destination in one particular case
4 # Copyright (C) 2006-2009 Free Software Foundation, Inc.
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.
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.
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/>.
19 if test "$VERBOSE" = yes; then
25 require_strace_ unlink
27 # Before the fix, mv would unnecessarily unlink the destination symlink:
28 # $ rm -rf s[12]; ln -s / s1; ln -s /tmp s2; strace -qe unlink /bin/mv -T s1 s2
31 # With the fix, it doesn't call unlink:
32 # $ rm -rf s[12]; ln -s / s1; ln -s /tmp s2; strace -qe unlink ./mv -T s1 s2
35 ln -s t1 s1 || framework_failure
36 ln -s t2 s2 || framework_failure
39 strace -qe unlink mv -T s1 s2 > out 2>&1 || fail=1
40 $EGREP 'unlink.*"s1"' out && fail=1
42 # Ensure that the source, s1, is gone.
43 ls -dl s1 > /dev/null 2>&1 && fail=1
45 # Ensure that the destination, s2, contains the link from s1.
46 test "`readlink s2`" = t1 || fail=1