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Add a new growfs test 078, and do a better job of cleaning tmp files after a QA run

#! /bin/sh
# XFS QA Test No. 078
#
# Check several growfs corner cases
#
#-----------------------------------------------------------------------
# Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
# 
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
# 
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# 
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like.  Any license provided herein, whether implied or
# otherwise, applies only to this software file.  Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
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# You should have received a copy of the GNU General Public License along
# with this program; if not, write the Free Software Foundation, Inc., 59
# Temple Place - Suite 330, Boston MA 02111-1307, USA.
# 
# Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
# Mountain View, CA  94043, or:
# 
# http://www.sgi.com 
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# For further information regarding this notice, see: 
# 
# http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
#-----------------------------------------------------------------------
#
# creator
owner=nathans@sgi.com

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

here=`pwd`
tmp=/tmp/$$
status=1

_cleanup()
{
	umount $LOOP_MNT 2>/dev/null
	rmdir $LOOP_MNT
}
trap "_cleanup; rm -f $tmp.*; exit \$status" 0 1 2 3 15

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

_require_loop

LOOP_DEV=$tmp.fs
LOOP_MNT=$tmp.mnt

# real QA test starts here
echo "*** create loop mount point"
rm -f $LOOP_MNT 2>/dev/null
mkdir $LOOP_MNT || _fail "cannot create loopback mount point"

_grow_loop()
{
	original=$1
	new_size=$2
	bsize=$3

	echo
	echo "=== GROWFS (from $original to $new_size, $bsize blocksize)"
	echo

	echo "*** mkfs loop file (size=$original)"
	/sbin/mkfs.xfs -bsize=$bsize -dfile,name=$LOOP_DEV,size=$original \
		| _filter_mkfs 2>/dev/null

	echo "*** extend loop file"
	xfs_io -c "pwrite $new_size $bsize" $LOOP_DEV 
	echo "*** mount loop filesystem"
	mount -t xfs -o loop $LOOP_DEV $LOOP_MNT

	echo "*** grow loop filesystem"
	xfs_growfs $LOOP_MNT | _filter_mkfs 2>/dev/null

	echo "*** unmount and check"
	umount $LOOP_MNT
	_check_filesystem $LOOP_DEV
	rm -f $LOOP_DEV
}

# Wes' problem sizes...
_grow_loop 168024b 1376452608 4096

# Some other blocksize cases...
_grow_loop 168024b 1376452608 2048
_grow_loop 168024b 1376452608 512
_grow_loop 168024b 168025b 1024 

echo "*** all done"
status=0
exit