122 lines
3.1 KiB
Bash
122 lines
3.1 KiB
Bash
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#!/bin/sh
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#
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# Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# Testing problem with buffer cache inconsistency
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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D=$diskimage
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dd if=/dev/zero of=$D bs=1m count=10 status=none || exit 1
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odir=`pwd`
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dir=$mntpoint
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cd /tmp
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sed '1,/^EOF/d' < $odir/$0 > symlink2.c
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mycc -o symlink2 -Wall symlink2.c
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rm -f symlink2.c
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cd $odir
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mount | grep "$mntpoint" | grep md$mdstart > /dev/null && umount $mntpoint
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mdconfig -l | grep md$mdstart > /dev/null && mdconfig -d -u $mdstart
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mdconfig -a -t vnode -f $D -u $mdstart
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for i in "" "-U"; do
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[ "$i" = "-U" -a "$newfs_flags" != "-U" ] && continue
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echo "newfs $i /dev/md$mdstart"
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newfs $i /dev/md$mdstart > /dev/null 2>&1
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mount /dev/md$mdstart $mntpoint
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mkdir $mntpoint/dir
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/tmp/symlink2 $mntpoint/dir/link
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ls -l $mntpoint/dir > /dev/null 2>&1
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if [ $? -ne 0 ]; then
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set -x
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ls -l $mntpoint/dir
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umount $mntpoint
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mount /dev/md$mdstart $mntpoint
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ls -l $mntpoint/dir
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set +x
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fi
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umount -f $mntpoint
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done
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rm -f /tmp/symlink2 $D
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mdconfig -d -u $mdstart
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exit
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EOF
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <err.h>
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#include <string.h>
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#include <sys/wait.h>
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static char *path;
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int
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main(int argc, char **argv)
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{
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int i, n;
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pid_t p;
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char buf[128];
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path = argv[1];
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for (i = 0; i < 100; i++) {
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if ((p = fork()) == 0) {
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if ((n = readlink(path, buf, sizeof(buf) -1)) < 0) {
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for (i = 0; i < 60; i++) {
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sleep(1);
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if ((n = readlink(path, buf, sizeof(buf) -1)) > 0) {
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break;
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}
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}
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}
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if (n < 0)
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err(1, "readlink(%s). %s:%d", path, __FILE__, __LINE__);
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exit(0);
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}
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}
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(void) unlink(path);
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sleep(2);
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if (symlink("1234", path) < 0)
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err(1, "symlink(%s, %s)", path, "1234");
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for (i = 0; i < 100; i++) {
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if (wait(&n) == -1)
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err(1, "wait(), %s:%d", __FILE__, __LINE__);
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}
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return (0);
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}
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