185 lines
4.1 KiB
Bash
Executable File
185 lines
4.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2013 EMC Corp.
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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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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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# Regression test for rename(2) problem with missing reference release of
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# a busy "to" vnode, resulting in a leak.
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# Fixed in r253998.
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. ../default.cfg
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here=`pwd`
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cd /tmp
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sed '1,/^EOF/d' < $here/$0 > rename10.c
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mycc -o rename10 -Wall -Wextra -g -O2 rename10.c || exit 1
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rm -f rename10.c
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cd $here
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mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint
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mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
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mdconfig -a -t swap -s 4g -u $mdstart || exit 1
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bsdlabel -w md$mdstart auto
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newfs $newfs_flags md${mdstart}$part > /dev/null
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mount /dev/md${mdstart}$part $mntpoint
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avail=`df -k $mntpoint | tail -1 | awk '{print $4}'`
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cd $mntpoint
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/tmp/rename10; s=$?
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cd $here
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for i in `jot 3`; do
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sync
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sleep 2
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done
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if [ `df -k $mntpoint | tail -1 | awk '{print $4}'` -lt $avail ]; then
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echo FAIL
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ls -ial $mntpoint
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df -i $mntpoint
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fi
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n=0
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while mount | grep "on $mntpoint " | grep -q /dev/md; do
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umount $mntpoint || sleep 1
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n=$((n + 1))
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[ $n -gt 5 ] && { umount -f $mntpoint; break; }
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done
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checkfs /dev/md${mdstart}$part || s=$?
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rm -f /tmp/rename10
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mdconfig -d -u $mdstart
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exit $s
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EOF
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#include <err.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#define PARALLEL 4
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#define SIZE (1 * 1024 * 1024)
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static char *logfile = "logfile";
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static char *oldfiles[] = {
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"logfile.0", "logfile.1", "logfile.2", "logfile.3", "logfile.4"
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};
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void *
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logger(void)
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{
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int fd;
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char * cp;
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setproctitle("logger");
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cp = calloc(1, SIZE);
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for(;;) {
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if ((fd = open(logfile, O_RDWR | O_APPEND)) != -1) {
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if (write(fd, cp, SIZE) != SIZE)
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err(1, "write()");
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close(fd);
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}
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usleep(1);
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}
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_exit(0);
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}
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void *
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spin(void)
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{
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int fd, i;
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setproctitle("spin");
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for(;;) {
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for (i = 0; i < 5; i++) {
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if ((fd = open(oldfiles[i], O_RDWR | O_APPEND)) != -1)
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close(fd);
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}
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usleep(1);
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}
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_exit(0);
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}
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void
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renamer()
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{
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int fd, i;
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time_t start;
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setproctitle("renamer");
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start = time(NULL);
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i = 0;
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while (time(NULL) - start < 60) {
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if ((fd = open(logfile, O_RDWR | O_CREAT | O_EXCL, 0644)) == -1)
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err(1, "creat(%s)", logfile);
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close(fd);
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if (rename(logfile, oldfiles[i]) == -1)
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err(1, "rename(%s, %s)", logfile, oldfiles[i]);
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i = (i + 1) % 5;
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}
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for (i = 0; i < 5; i++) {
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unlink(oldfiles[i]);
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}
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unlink(logfile);
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}
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int
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main() {
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pid_t pids[PARALLEL], spids[PARALLEL];
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int i;
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for (i = 0; i < PARALLEL; i++) {
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if ((pids[i] = fork()) == 0)
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logger();
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if ((spids[i] = fork()) == 0)
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spin();
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}
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renamer();
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for (i = 0; i < PARALLEL; i++) {
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if (kill(pids[i], SIGINT) == -1)
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err(1, "kill(%d)", pids[i]);
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if (kill(spids[i], SIGINT) == -1)
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err(1, "kill(%d)", spids[i]);
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}
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for (i = 0; i < PARALLEL * 2; i++)
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wait(NULL);
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wait(NULL);
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return (0);
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}
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