apfstests/089

#! /bin/sh
# FS QA Test No. 089
#
# Emulate the way Linux mount manipulates /etc/mtab to attempt to
# reproduce a possible bug in rename (see src/t_mtab.c).
#
#-----------------------------------------------------------------------
# Copyright (c) 2000-2004 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.
# 
# 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 
# 
# 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	# failure is the default!
trap "rm -f $tmp.*; exit \$status" 0 1 2 3 15

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

addentries()
{
	count=$1
	pattern="%0$2d"

	while [ $count -gt 0 ]; do
		touch `printf $pattern $count`
		count=`expr $count - 1`
	done
}

# real QA test starts here
_supported_fs xfs
_supported_os Linux

rm -f $seq.full
[ "X$TEST_DIR" = "X" ] && exit 1
cd $TEST_DIR
rm -fr test
mkdir test || exit 1
cd $TEST_DIR/test
mount > t_mtab

mtab()
{
	$here/src/t_mtab 50 &
	$here/src/t_mtab 50 &
	$here/src/t_mtab 50 &
	wait

	$here/src/t_mtab 10000

	echo directory entries:
	ls | grep mtab
	echo directory entries >> $here/$seq.full
	ls -li >> $here/$seq.full
}

# directory with only a few entries
mtab

# directory with a hundred more entries, each 4chars wide
addentries 100 4
mtab

# directory with a thousand more entries, each 8chars wide
addentries 1000 8
mtab

status=0
exit