122 lines
3.1 KiB
Bash
Executable File
122 lines
3.1 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
#
|
|
# Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
|
|
# All rights reserved.
|
|
#
|
|
# 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.
|
|
#
|
|
|
|
# Testing problem with buffer cache inconsistency
|
|
|
|
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
|
|
|
|
. ../default.cfg
|
|
|
|
D=$diskimage
|
|
dd if=/dev/zero of=$D bs=1m count=10 status=none || exit 1
|
|
|
|
odir=`pwd`
|
|
dir=$mntpoint
|
|
|
|
cd /tmp
|
|
sed '1,/^EOF/d' < $odir/$0 > symlink2.c
|
|
mycc -o symlink2 -Wall symlink2.c
|
|
rm -f symlink2.c
|
|
cd $odir
|
|
|
|
mount | grep "$mntpoint" | grep md$mdstart > /dev/null && umount $mntpoint
|
|
mdconfig -l | grep md$mdstart > /dev/null && mdconfig -d -u $mdstart
|
|
|
|
mdconfig -a -t vnode -f $D -u $mdstart
|
|
|
|
for i in "" "-U"; do
|
|
[ "$i" = "-U" -a "$newfs_flags" != "-U" ] && continue
|
|
echo "newfs $i /dev/md$mdstart"
|
|
newfs $i /dev/md$mdstart > /dev/null 2>&1
|
|
mount /dev/md$mdstart $mntpoint
|
|
mkdir $mntpoint/dir
|
|
|
|
/tmp/symlink2 $mntpoint/dir/link
|
|
|
|
ls -l $mntpoint/dir > /dev/null 2>&1
|
|
if [ $? -ne 0 ]; then
|
|
set -x
|
|
ls -l $mntpoint/dir
|
|
umount $mntpoint
|
|
mount /dev/md$mdstart $mntpoint
|
|
ls -l $mntpoint/dir
|
|
set +x
|
|
fi
|
|
|
|
umount -f $mntpoint
|
|
done
|
|
rm -f /tmp/symlink2 $D
|
|
mdconfig -d -u $mdstart
|
|
exit
|
|
EOF
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <pthread.h>
|
|
#include <err.h>
|
|
#include <string.h>
|
|
#include <sys/wait.h>
|
|
|
|
static char *path;
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
int i, n;
|
|
pid_t p;
|
|
char buf[128];
|
|
|
|
path = argv[1];
|
|
for (i = 0; i < 100; i++) {
|
|
if ((p = fork()) == 0) {
|
|
if ((n = readlink(path, buf, sizeof(buf) -1)) < 0) {
|
|
for (i = 0; i < 60; i++) {
|
|
sleep(1);
|
|
if ((n = readlink(path, buf, sizeof(buf) -1)) > 0) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (n < 0)
|
|
err(1, "readlink(%s). %s:%d", path, __FILE__, __LINE__);
|
|
exit(0);
|
|
}
|
|
}
|
|
(void) unlink(path);
|
|
sleep(2);
|
|
if (symlink("1234", path) < 0)
|
|
err(1, "symlink(%s, %s)", path, "1234");
|
|
|
|
for (i = 0; i < 100; i++) {
|
|
if (wait(&n) == -1)
|
|
err(1, "wait(), %s:%d", __FILE__, __LINE__);
|
|
}
|
|
|
|
return (0);
|
|
}
|