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e1fb2a80bb
simply nonempty. RHEL AS 4 would fail this test due to strace generating "[ Process PID=14434 runs in 32 bit mode. ]". Reported by Nelson Beebe.
70 lines
2.1 KiB
Bash
Executable File
70 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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# ensure that mv doesn't first unlink its destination in one particular case
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# Copyright (C) 2006 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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if test "$VERBOSE" = yes; then
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set -x
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mv --version
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fi
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pwd=`pwd`
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t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
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trap 'status=$?; cd $pwd; chmod -R u+rwx $t0; rm -rf $t0 && exit $status' 0
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trap '(exit $?); exit $?' 1 2 13 15
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framework_failure=0
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mkdir -p $tmp || framework_failure=1
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cd $tmp || framework_failure=1
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# Before the fix, mv would unnecessarily unlink the destination symlink:
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# $ rm -rf s[12]; ln -s / s1; ln -s /tmp s2; strace -qe unlink /bin/mv -T s1 s2
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# unlink("s2") = 0
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#
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# With the fix, it doesn't call unlink:
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# $ rm -rf s[12]; ln -s / s1; ln -s /tmp s2; strace -qe unlink ./mv -T s1 s2
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# $
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ln -s t1 s1 || framework_failure=1
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ln -s t2 s2 || framework_failure=1
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if test $framework_failure = 1; then
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echo "$0: failure in testing framework" 1>&2
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(exit 1); exit 1
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fi
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# Skip this test on systems without strace.
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strace -V < /dev/null > ver 2>&1 || skip=1
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if test "$skip" = 1; then
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echo "$0: no strace program, so skipping this test" 1>&2
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(exit 77); exit 77
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fi
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fail=0
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strace -qe unlink mv -T s1 s2 > out 2>&1 || fail=1
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grep unlink out && fail=1
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# Ensure that the source, s1, is gone.
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ls -dl s1 > /dev/null 2>&1 && fail=1
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# Ensure that the destination, s2, contains the link from s1.
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test "`readlink s2`" = t1 || fail=1
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(exit $fail); exit $fail
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