189 lines
4.5 KiB
Bash
Executable File
189 lines
4.5 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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# Test scenario for the change of a global SU lock to a per filesystem lock.
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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 > pfl.c
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mycc -o pfl -Wall -Wextra pfl.c || exit 1
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rm -f pfl.c
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cd $here
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md1=$mdstart
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md2=$((mdstart + 1))
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mp1=${mntpoint}$md1
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mp2=${mntpoint}$md2
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mkdir -p $mp1 $mp2
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usermem=`sysctl -n hw.usermem`
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[ `swapinfo | wc -l` -eq 1 ] && usermem=$((usermem/100*80))
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size=$((2 * 1024 * 1024 * 1024)) # Ideal disk size is 2G
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[ $((size * 2)) -gt $usermem ] && size=$((usermem / 2))
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size=$((size / 1024 / 1024))
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opt=$([ $((`date '+%s'` % 2)) -eq 0 ] && echo "-j" || echo "-U")
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[ "$newfs_flags" = "-U" ] || opt=""
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mount | grep "on $mp1 " | grep -q /dev/md && umount -f $mp1
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[ -c /dev/md$md1 ] && mdconfig -d -u $md1
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mdconfig -a -t swap -s ${size}m -u $md1
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bsdlabel -w md$md1 auto
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newfs $opt md${md1}$part > /dev/null
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mount /dev/md${md1}$part $mp1
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chmod 777 $mp1
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mount | grep "on $mp2 " | grep -q /dev/md && umount -f $mp2
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[ -c /dev/md$md2 ] && mdconfig -d -u $md2
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mdconfig -a -t swap -s ${size}m -u $md2
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bsdlabel -w md$md2 auto
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newfs $opt md${md2}$part > /dev/null
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mount /dev/md${md2}$part $mp2
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chmod 777 $mp2
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su $testuser -c "cd $mp1; /tmp/pfl" &
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pids=$!
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su $testuser -c "cd $mp2; /tmp/pfl" &
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pids="$pids $!"
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sleep .5
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s=0
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start=`date '+%s'`
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while pgrep -q pfl; do
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if [ $((`date '+%s'`- start)) -gt 900 ]; then
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s=1
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echo "$0 timed out."
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pkill -9 pfl
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fi
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sleep 10
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done
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for p in $pids; do
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wait $p
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[ $? -ne 0 ] && s=2
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done
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while mount | grep "$mp2 " | grep -q /dev/md; do
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umount $mp2 || sleep 1
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done
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mdconfig -d -u $md2
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while mount | grep "$mp1 " | grep -q /dev/md; do
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umount $mp1 || sleep 1
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done
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rm -f /tmp/pfl
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mdconfig -d -u $md1
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exit $s
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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 <unistd.h>
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#define PARALLEL 10
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static void
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test(void)
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{
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pid_t pid;
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int fd, i, j;
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char file[128];
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pid = getpid();
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sprintf(file,"d%05d", pid);
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if (mkdir(file, 0740) == -1)
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err(1, "mkdir(%s)", file);
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chdir(file);
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for (j = 0; j < 10000; j++) {
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sprintf(file,"p%05d.%05d", pid, j);
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if ((fd = open(file, O_CREAT | O_TRUNC | O_WRONLY, 0644)) ==
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-1) {
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if (errno != EINTR) {
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warn("mkdir(%s). %s:%d", file, __FILE__,
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__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 (arc4random() % 100 < 10)
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if (write(fd, "1", 1) != 1)
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err(1, "write()");
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close(fd);
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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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err(3, "unlink(%s)", file);
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}
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chdir("..");
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sprintf(file,"d%05d", pid);
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if (rmdir(file) == -1)
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err(3, "unlink(%s)", file);
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}
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int
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main(void)
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{
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pid_t pids[PARALLEL];
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int e, fd, j, k, s;
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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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e = 0;
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for (j = 0; j < PARALLEL; j++) {
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if ((pids[j] = fork()) == 0) {
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for (k = 0; k < 40; k++)
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test();
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_exit(0);
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}
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}
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for (j = 0; j < PARALLEL; j++) {
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if (waitpid(pids[j], &s, 0) == -1)
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err(1, "waitpid(%d)", pids[j]);
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e += s == 0 ? 0 : 1;
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}
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return (e);
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}
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