opnsense-src/tools/test/stress2/misc/nullfs21.sh
Peter Holm 8a272653d9 stress2: Initial import
Discussed with:	 kib
2021-03-03 15:11:40 +01:00

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#!/bin/sh
#
# Copyright (c) 2016 EMC Corp.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
# mv <nullfs src> <origin src> removes the file. This is OK on FreeBSD.
# This is handled on Linux with "mount --bind".
. ../default.cfg
mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
mdconfig -a -t swap -s 512m -u $mdstart || exit 1
bsdlabel -w md$mdstart auto
newfs -n -b 4096 -f 512 -i 1024 md${mdstart}$part > /dev/null
mount /dev/md${mdstart}$part $mntpoint
mp2=${mntpoint}2
[ -d $mp2 ] || mkdir -p $mp2
mount | grep -wq $mp2 && umount $mp2
mount -t nullfs $mntpoint $mp2
touch $mntpoint/file
# mv's rename(2) fails as this is a "cross mount" ->
# rm dst; cp src dst; rm src
mv $mp2/file $mountpoint/file
[ -f $mntpoint/file ] ||
{ ls -ali $mntpoint $mp2; status=0; }
# { echo FAIL; ls -ali $mntpoint $mp2; status=1; }
while mount | grep $mp2 | grep -q nullfs; do
umount $mp2 || sleep 1
done
n=0
while mount | grep $mntpoint | grep -q /dev/md; do
umount $mntpoint || sleep 1
n=$((n + 1))
[ $n -gt 30 ] && { echo FAIL; status=2; }
done
mdconfig -d -u $mdstart
exit $status