#!/bin/sh

#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2019 Dell EMC Isilon
#
# 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.
#

# Toggle a tmpfs file system rw / ro.
# No problems seen.

. ../default.cfg

[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1

mount | grep "on $mntpoint " | grep -q /md  && umount -f $mntpoint
mount -t tmpfs null $mntpoint

mkdir $mntpoint/stressX
chmod 777 $mntpoint/stressX

export RUNDIR=$mntpoint/stressX
export CTRLDIR=$mntpoint/stressX.control
export runRUNTIME=4m
export TESTPROGS="testcases/swap/swap testcases/creat/creat \
    testcases/mkdir/mkdir testcases/rw/rw"
(cd ..; ./testcases/run/run $TESTPROGS > /dev/null 2>&1) &
sleep 10

start=`date +%s`
while [ $((`date +%s` - start)) -lt 60 ]; do
	mount -fu -o ro $mntpoint
	sleep .5
	mount  -u -o rw $mntpoint
	sleep .5
done

../tools/killall.sh
wait
while mount | grep -q "on $mntpoint "; do
	umount $mntpoint
done