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#!/bin/sh
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# The issue, found by Maxim, is that sometimes partial truncate could
# create a UFS inode where the last byte is not populated.
# Fixed by r295950.
# Test scenario by Maxim Sobolev <sobomax@sippysoft.com>
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
. ../default.cfg
mount | grep -q "$mntpoint" && umount $mntpoint
mdconfig -l | grep -q $mdstart && mdconfig -d -u $mdstart
mdconfig -a -t swap -s 1g -u $mdstart
if [ $# -eq 0 ]; then
newfs -n $newfs_flags md$mdstart > /dev/null
else
newfs -n md$mdstart > /dev/null
fi
mount /dev/md$mdstart $mntpoint
here=`pwd`
cd /tmp
sed '1,/^EOF/d' < $here/$0 > truncate6.c
mycc -o truncate6 -Wall -Wextra -O2 truncate6.c -lutil
rm -f truncate6.c
cd $mntpoint
/tmp/truncate6
inode=$(ls -ail | awk '/file/ {print $1}')
cd $here
rm -f /tmp/truncate6
while mount | grep -q md$rt; do
umount $mntpoint || sleep 1
done
full=$(
fsdb -r /dev/md$mdstart <<QUOTE
inode $inode
blocks
quit
QUOTE
)
full=`echo "$full" | sed '/Last Mounted/,+6d'`
r=`echo "$full" | tail -1`
expect=" lbn 3 blkno 4712-4719"
if [ "$r" != "$expect" ]; then
e=1
echo "FAIL Expected \"$expect\", got \"$r\"."
echo "$full" | tail -3
else
e=0
fi
mdconfig -d -u $mdstart
exit $e
EOF
#include <sys/types.h>
#include <sys/stat.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
int
main(void)
{
off_t hole, data, pos;
int fd;
char tempname[] = "file";
pos = 1024 * 128 + 1; // 131073
if ((fd = open(tempname, O_WRONLY | O_CREAT | O_TRUNC, DEFFILEMODE)) ==
-1)
err(1, "open(%s)", tempname);
if (ftruncate(fd, pos) < 0)
err(1, "ftruncate()");
hole = lseek(fd, 0, SEEK_HOLE); // 0
data = lseek(fd, 0, SEEK_DATA); // 131072
if (ftruncate(fd, data) < 0)
err(1, "ftruncate() 2");
close(fd);
if (hole != 0 && data != 131072) {
printf("--> hole = %jd, data = %jd, pos = %jd\n",
(intmax_t)hole, (intmax_t)data, (intmax_t)pos);
exit (1);
}
return (0);
}
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