xref: /freebsd/tools/test/stress2/misc/nullfs10.sh (revision ec0ea6efa1ad229d75c394c1a9b9cac33af2b1d3)
1#!/bin/sh
2
3#
4# Copyright (c) 2012 Peter Holm <pho@FreeBSD.org>
5# All rights reserved.
6#
7# Redistribution and use in source and binary forms, with or without
8# modification, are permitted provided that the following conditions
9# are met:
10# 1. Redistributions of source code must retain the above copyright
11#    notice, this list of conditions and the following disclaimer.
12# 2. Redistributions in binary form must reproduce the above copyright
13#    notice, this list of conditions and the following disclaimer in the
14#    documentation and/or other materials provided with the distribution.
15#
16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26# SUCH DAMAGE.
27#
28
29[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
30
31# Regression test:
32
33# There is an issue, namely, when the lower file is already
34# opened r/w, but its nullfs alias is executed. This situation obviously
35# shall result in ETXTBUSY, but it currently does not.
36
37# Test scenario by kib@
38
39. ../default.cfg
40
41mnt2=${mntpoint}2
42mount | grep -q $mnt2 && umount $mnt2
43
44[ -d $mnt2 ] || mkdir $mnt2
45mount | grep $mnt2 | grep -q /dev/md && umount -f $mnt2
46mdconfig -l | grep -q md$mdstart &&  mdconfig -d -u $mdstart
47mdconfig -a -t swap -s 1g -u $mdstart
48bsdlabel -w md$mdstart auto
49newfs $newfs_flags md${mdstart}$part > /dev/null
50mount /dev/md${mdstart}$part $mntpoint
51chmod 777 $mntpoint
52
53mount -t nullfs $mntpoint $mnt2
54
55cp /bin/ls $mntpoint
56chmod +w $mntpoint/ls
57sleep 2 >> $mntpoint/ls &
58sleep .5
59# This line should cause a "/mnt2/ls: Text file busy"
60$mnt2/ls -l /bin/ls $mntpoint $mnt2 && echo FAIL || echo OK
61kill $!
62wait
63
64while mount | grep -q "$mnt2 "; do
65	umount $mnt2 || sleep 1
66done
67
68while mount | grep -q "$mntpoint "; do
69	umount $mntpoint || sleep 1
70done
71mdconfig -d -u $mdstart
72