1#!/bin/sh 2 3# 4# Copyright (c) 2016 EMC Corp. 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# mv <nullfs src> <origin src> removes the file. This is OK on FreeBSD. 32# This is handled on Linux with "mount --bind". 33 34. ../default.cfg 35 36mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint 37mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 38 39mdconfig -a -t swap -s 512m -u $mdstart || exit 1 40 41newfs -n -b 4096 -f 512 -i 1024 md$mdstart > /dev/null 42 43mount /dev/md$mdstart $mntpoint 44 45mp2=${mntpoint}2 46[ -d $mp2 ] || mkdir -p $mp2 47mount | grep -wq $mp2 && umount $mp2 48mount -t nullfs $mntpoint $mp2 49 50touch $mntpoint/file 51 52# mv's rename(2) fails as this is a "cross mount" -> 53# rm dst; cp src dst; rm src 54 55mv $mp2/file $mountpoint/file 56[ -f $mntpoint/file ] || 57 { ls -ali $mntpoint $mp2; status=0; } 58# { echo FAIL; ls -ali $mntpoint $mp2; status=1; } 59 60while mount | grep $mp2 | grep -q nullfs; do 61 umount $mp2 || sleep 1 62done 63n=0 64while mount | grep $mntpoint | grep -q /dev/md; do 65 umount $mntpoint || sleep 1 66 n=$((n + 1)) 67 [ $n -gt 30 ] && { echo FAIL; status=2; } 68done 69mdconfig -d -u $mdstart 70exit $status 71