2 # ensure that mv doesn't first unlink its destination in one particular case
4 # Copyright (C) 2006, 2006 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 2 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, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 if test "$VERBOSE" = yes; then
27 t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
28 trap 'status=$?; cd "$pwd" && chmod -R u+rwx $t0 && rm -rf $t0 && exit $status' 0
29 trap '(exit $?); exit $?' 1 2 13 15
32 mkdir -p $tmp || framework_failure=1
33 cd $tmp || framework_failure=1
35 # Before the fix, mv would unnecessarily unlink the destination symlink:
36 # $ rm -rf s[12]; ln -s / s1; ln -s /tmp s2; strace -qe unlink /bin/mv -T s1 s2
39 # With the fix, it doesn't call unlink:
40 # $ rm -rf s[12]; ln -s / s1; ln -s /tmp s2; strace -qe unlink ./mv -T s1 s2
43 ln -s t1 s1 || framework_failure=1
44 ln -s t2 s2 || framework_failure=1
46 if test $framework_failure = 1; then
47 echo "$0: failure in testing framework" 1>&2
51 # Skip this test on systems without strace.
52 strace -V < /dev/null > ver 2>&1 || skip=1
53 if test "$skip" = 1; then
54 echo "$0: no strace program, so skipping this test" 1>&2
60 strace -qe unlink mv -T s1 s2 > out 2>&1 || fail=1
61 $EGREP 'unlink.*"s1"' out && fail=1
63 # Ensure that the source, s1, is gone.
64 ls -dl s1 > /dev/null 2>&1 && fail=1
66 # Ensure that the destination, s2, contains the link from s1.
67 test "`readlink s2`" = t1 || fail=1
69 (exit $fail); exit $fail