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