apfstests/032

#! /bin/sh
# FS QA Test No. 032
#
# cross check mkfs detection of foreign filesystems
#
#-----------------------------------------------------------------------
# Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
#-----------------------------------------------------------------------
#
# creator
owner=nathans@sgi.com

seq=`basename $0`
echo "QA output created by $seq"

here=`pwd`
tmp=/tmp/$$
status=1	# failure is the default!
trap "rm -f $tmp.*; exit \$status" 0 1 2 3 15
rm -f $seq.full

# get standard environment, filters and checks
. ./common.rc
. ./common.filter

# real QA test starts here
_supported_fs xfs
_supported_os Linux

_require_nobigloopfs
_require_scratch

echo "Silence is golden."
for fs in `echo /sbin/mkfs.* | sed -e 's/.sbin.mkfs.//g'`
do
	preop=""	# for special input needs
	preargs=""	# for any special pre-device options
	postargs=""	# for any special post-device options

	# minix, msdos and vfat mkfs fails for large devices, restrict to 2000 blocks
	[ $fs = minix ] && postargs=2000
	[ $fs = msdos ] && postargs=2000
	[ $fs = vfat ] && postargs=2000
	# these folks prompt before writing
	[ $fs = jfs ] && preop="echo Y |"
	[ $fs = reiserfs ] && preop="echo y |"
	# cramfs mkfs requires a directory argument
	[ $fs = cramfs ] && preargs=/proc/fs/xfs

	# overwite the first few Kb - should blow away superblocks
	src/devzero -n 20 $SCRATCH_DEV >/dev/null

	# create a filesystem of this type
	echo "=== Creating $fs filesystem..." >>$seq.full
	echo "    ( mkfs -t $fs $SCRATCH_DEV )" >>$seq.full
	eval $preop mkfs -t $fs $preargs $SCRATCH_DEV $postargs >>$seq.full 2>&1

	# next, ensure we don't overwrite it
	echo "=== Attempting XFS overwrite of $fs..." >>$seq.full
	/sbin/mkfs.xfs $SCRATCH_DEV >>$seq.full 2>&1

	[ $? -eq 0 ] && echo "Failed - overwrote fs type ${fs}!"
done

# success, all done
status=0
exit