mirror of
git://git.sv.gnu.org/coreutils.git
synced 2026-03-25 06:15:01 +02:00
57 lines
1.4 KiB
Bash
Executable File
57 lines
1.4 KiB
Bash
Executable File
#!/bin/sh
|
|
# ensure that mv doesn't first unlink its destination in one particular case
|
|
|
|
if test "$VERBOSE" = yes; then
|
|
set -x
|
|
mv --version
|
|
fi
|
|
|
|
pwd=`pwd`
|
|
t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
|
|
trap 'status=$?; cd $pwd; chmod -R u+rwx $t0; rm -rf $t0 && exit $status' 0
|
|
trap '(exit $?); exit $?' 1 2 13 15
|
|
|
|
framework_failure=0
|
|
mkdir -p $tmp || framework_failure=1
|
|
cd $tmp || framework_failure=1
|
|
|
|
# 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=1
|
|
ln -s t2 s2 || framework_failure=1
|
|
|
|
if test $framework_failure = 1; then
|
|
echo "$0: failure in testing framework" 1>&2
|
|
(exit 1); exit 1
|
|
fi
|
|
|
|
# Skip this test on systems without strace.
|
|
strace -V < /dev/null > ver 2>&1 || skip=1
|
|
if test "$skip" = 1; then
|
|
echo "$0: no strace program, so skipping this test" 1>&2
|
|
(exit 77); exit 77
|
|
fi
|
|
|
|
fail=0
|
|
|
|
strace -qe unlink mv -T s1 s2 > out 2>&1 || fail=1
|
|
cat <<\EOF > exp || fail=1
|
|
EOF
|
|
|
|
# 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
|
|
|
|
cmp out exp || fail=1
|
|
test $fail = 1 && diff out exp 2> /dev/null
|
|
|
|
(exit $fail); exit $fail
|