testcases/network/nfs/nfslock01/nfslock01

#!/bin/sh
# Copyright (c) 2016 Oracle and/or its affiliates. All Rights Reserved.
# Copyright (c) International Business Machines  Corp., 2001
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# 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.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
#  PURPOSE:
#           Two processes open FLOCK_IDATA file simultaneously
#           each one locks odd and even lines of the file simultaneously
#           and fill them with '0's and '1's. After they find eof, the
#           datafiles are compared.

TCID=nfslock
TST_TOTAL=1
TST_CLEANUP="nfs_cleanup"

. nfs_lib.sh
. test_net.sh

LUSER=${LUSER:=root}

do_setup()
{
	nfs_setup

	tst_resm TINFO "creating test files"
	ROD nfs_flock_dgen flock_data 63 16384 0
	ROD nfs_flock_dgen flock_odata 63 16384 1

	[ "$(wc -c flock_data | awk '{print $1}')" -ne 1048576 ] && \
		tst_brkm TBROK "could not create 'flock_data'"

	[ "$(wc -c flock_odata | awk '{print $1}')" -ne 1048576 ] && \
		tst_brkm TBROK "could not create 'flock_odata'"
}

do_test()
{
	tst_resm TINFO "Testing locking"

	ROD cp flock_data flock_idata

	tst_resm TINFO "locking 'flock_idata' file and writing data"

	nfs_flock 0 flock_idata &
	local pids=$!
	nfs_flock 1 flock_idata &
	pids="$pids $!"

	tst_resm TINFO "waiting for pids: $pids"
	for p in $pids; do
		wait $p
		if [ $? -ne 0 ]; then
			tst_brkm TFAIL "nfs_lock process failed"
		else
			tst_resm TINFO "$p completed"
		fi
	done

	diff flock_odata flock_idata
	if [ $? -ne 0 ]; then
		tst_resm TFAIL "content is different"
	else
		tst_resm TPASS "content is the same"
	fi
}

do_setup

do_test

tst_exit