apfstests/258

#! /bin/bash
# FS QA Test No. 258
#
# Test timestamps prior to epoch
# On 64-bit, ext2/3/4 was sign-extending when read from disk
# See also commit 4d7bf11d649c72621ca31b8ea12b9c94af380e63
#
#-----------------------------------------------------------------------
# Copyright (c) 2011 Red Hat, Inc.  All Rights Reserved.
#
# 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.
#
# 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, write the Free Software Foundation,
# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
#-----------------------------------------------------------------------
#
# creator
owner=sandeen@redhat.com

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

here=`pwd`
tmp=/tmp/$$
status=1	# failure is the default!

_cleanup()
{
    rm -f $tmp.*
}

trap "_cleanup ; exit \$status" 0 1 2 3 15

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

# real QA test starts here
_supported_fs generic
_supported_os Linux

TESTFILE=$TEST_DIR/timestamp-test.txt

# Create a file with a timestamp prior to the epoch
echo "Creating file with timestamp of Jan 1, 1960"
touch -t 196001010101 $TESTFILE
# Should yield -315593940 (prior to epoch)
echo "Testing for negative seconds since epoch"
ts=`stat -c %X $TESTFILE`
if [ "$ts" -ge 0 ]; then
	echo "Timestamp wrapped: $ts"
	_fail "Timestamp wrapped"
fi

# unmount, remount, and check the timestamp
echo "Remounting to flush cache"
umount $TEST_DEV
mount $TEST_DEV $TEST_DIR

# Should yield -315593940 (prior to epoch)
echo "Testing for negative seconds since epoch"
ts=`stat -c %X $TESTFILE`
if [ "$ts" -ge 0 ]; then
	echo "Timestamp wrapped: $ts"
	_fail "Timestamp wrapped"
fi

status=0 ; exit