android13/external/ltp/testcases/kernel/fs/fs_bind/bin/setup

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#!/bin/bash -v
#
# Copyright (c) International Business Machines Corp., 2005
# Author: Avantika Mathur (mathurav@us.ibm.com)
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
disk1=disk1
disk2=disk2
disk3=disk3
disk4=disk4
fs=ext3
mkdir -p $disk1 $disk2 $disk3 $disk4
rm -rf $disk1/* $disk2/* $disk3/* $disk4/*
mkdir $disk1/a $disk1/b $disk1/c
mkdir $disk2/d $disk2/e $disk2/f
mkdir $disk3/g $disk3/h $disk3/i
mkdir $disk4/j $disk4/k $disk4/l
lockfile="/.nslock"
otherpid=
startparent()
{
rm -f $lockfile
echo $$ >| ${lockfile}parent
while [ 1 ]
do
otherpid="$(cat ${lockfile}child 2> /dev/null)"
if [ -n "$otherpid" -a -d /proc/$otherpid ]
then
return
fi
done
}
startchild()
{
rm -f $lockfile
echo $$ >| ${lockfile}child
while [ 1 ]
do
otherpid="$(cat ${lockfile}parent 2> /dev/null)"
if [ -n "$otherpid" -a -d /proc/$otherpid ]
then
return
fi
done
}
iamgoingahead()
{
while [ 1 ]
do
pid=`cat $lockfile 2> /dev/null`
if [ "$pid" == "$$" ]
then
return
fi
sleep 1
done
}
goahead()
{
set -x
echo $otherpid > $lockfile
set +x
}
check(){
"${FS_BIND_ROOT}/bin/check_prop" $*
ret=$?
if [ $ret -ne 0 ]; then
result=$ret
fi
}
export result=0
cleanup(){
rm -rf "disk"*
}