169 lines
4.0 KiB
Bash
Executable File
169 lines
4.0 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2011 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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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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# Demonstrate premature "out of inodes" problem with SU
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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 > linger.c
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mycc -o linger -Wall -O2 linger.c
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rm -f linger.c
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cd $here
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mount | grep $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 1g -u $mdstart
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bsdlabel -w md$mdstart auto
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[ $# -eq 1 ] && opt="$1"
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[ $# -eq 0 ] && opt=$newfs_flags # No argument == default flag
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echo "newfs $opt md${mdstart}$part"
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newfs $opt md${mdstart}$part > /dev/null
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mount /dev/md${mdstart}$part $mntpoint
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chmod 777 $mntpoint
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if ! su $testuser -c "cd $mntpoint; /tmp/linger $size"; then
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min=2
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[ -r $mntpoint/.sujournal ] && min=3
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r=`df -hi $mntpoint | head -1`
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echo " $r"
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for i in `jot 10`; do
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r=`df -hi $mntpoint | tail -1`
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echo "`date '+%T'` $r"
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[ `echo $r | awk '{print $6}'` = $min ] && break
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sleep 10
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done
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ls -lR $mntpoint
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fi
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while mount | grep "$mntpoint " | grep -q /dev/md; do
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umount $mntpoint || sleep 1
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done
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mdconfig -d -u $mdstart
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rm -f /tmp/linger
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exit
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EOF
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#include <sys/mount.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sched.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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#define PARALLEL 10
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#define TIMEOUT 1200
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static int size = 6552; /* 10 free inodes */
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static int
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test(void)
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{
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int fd, i, j;
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pid_t pid;
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char file[128];
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for (;;) {
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if (access("rendezvous", R_OK) == 0)
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break;
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sched_yield();
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}
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pid = getpid();
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for (j = 0; j < size; j++) {
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sprintf(file,"p%05d.%05d", pid, j);
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if ((fd = creat(file, 0660)) == -1) {
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if (errno != EINTR) {
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warn("creat(%s). %s:%d", file, __FILE__, __LINE__);
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unlink("continue");
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break;
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}
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}
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if (fd != -1 && close(fd) == -1)
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err(2, "close(%d)", j);
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}
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sleep(3);
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for (i = --j; i >= 0; i--) {
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sprintf(file,"p%05d.%05d", pid, i);
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if (unlink(file) == -1)
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warn("unlink(%s)", file);
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}
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return (0);
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}
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int
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main(void)
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{
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time_t start;
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int error = 0, fd, i, j, status;
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umask(0);
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if ((fd = open("continue", O_CREAT, 0644)) == -1)
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err(1, "open()");
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close(fd);
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start = time(NULL);
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for (i = 0; i < 100; i++) {
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for (j = 0; j < PARALLEL; j++) {
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if (fork() == 0) {
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test();
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exit(0);
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}
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}
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if ((fd = open("rendezvous", O_CREAT, 0644)) == -1)
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err(1, "open()");
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close(fd);
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for (j = 0; j < PARALLEL; j++) {
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wait(&status);
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error += status;
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}
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unlink("rendezvous");
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if (access("continue", R_OK) == -1)
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break;
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if (time(NULL) - start > TIMEOUT) {
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fprintf(stderr, "FAIL Timeout\n");
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break;
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}
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}
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unlink("continue");
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return (error != 0);
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}
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