72 lines
2.4 KiB
Bash
Executable File
72 lines
2.4 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2012 Peter Holm <pho@FreeBSD.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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# Regression test:
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# There is an issue, namely, when the lower file is already
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# opened r/w, but its nullfs alias is executed. This situation obviously
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# shall result in ETXTBUSY, but it currently does not.
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# Test scenario by kib@
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. ../default.cfg
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mnt2=${mntpoint}2
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mount | grep -q $mnt2 && umount $mnt2
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[ -d $mnt2 ] || mkdir $mnt2
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mount | grep $mnt2 | grep -q /dev/md && umount -f $mnt2
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mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
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mdconfig -a -t swap -s 1g -u $mdstart
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bsdlabel -w md$mdstart auto
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newfs $newfs_flags md${mdstart}$part > /dev/null
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mount /dev/md${mdstart}$part $mntpoint
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chmod 777 $mntpoint
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mount -t nullfs $mntpoint $mnt2
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cp /bin/ls $mntpoint
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chmod +w $mntpoint/ls
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sleep 2 >> $mntpoint/ls &
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sleep .5
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# This line should cause a "/mnt2/ls: Text file busy"
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$mnt2/ls -l /bin/ls $mntpoint $mnt2 && echo FAIL || echo OK
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kill $!
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wait
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while mount | grep -q "$mnt2 "; do
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umount $mnt2 || sleep 1
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done
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while mount | grep -q "$mntpoint "; do
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umount $mntpoint || sleep 1
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done
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mdconfig -d -u $mdstart
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