#!/bin/sh
#
# Copyright (c) 2012 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
# Unmapped I/O test scenario:
# http://people.freebsd.org/~pho/stress/log/kostik515.txt
. ../default.cfg
here=`pwd`
cd /tmp
sed '1,/^EOF/d' < $here/$0 > rot.c
mycc -o rot -Wall -Wextra -O2 -g rot.c || exit 1
rm -f rot.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 2g -u $mdstart || exit 1
bsdlabel -w md$mdstart auto
newfs $newfs_flags md${mdstart}$part > /dev/null
mount /dev/md${mdstart}$part $mntpoint
chmod 777 $mntpoint
(cd $mntpoint; /tmp/rot)
(cd `dirname $diskimage`; /tmp/rot)
while mount | grep $mntpoint | grep -q /dev/md; do
umount $mntpoint || sleep 1
done
mdconfig -d -u $mdstart
rm -f /tmp/rot
exit 0
EOF
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
#define N 10240 /* 40 Mb */
#define PARALLEL 20
#define RUNTIME (60 * 15)
int
test(void)
{
int fd, i, j, s;
unsigned char *buf;
char path[128];
s = getpagesize();
sprintf(path,"%s.%05d", getprogname(), getpid());
if ((fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0600)) < 0)
err(1, "open(%s)", path);
if (lseek(fd, s * N - 1, SEEK_SET) == -1)
err(1, "lseek error");
/* write a dummy byte at the last location */
if (write(fd, "", 1) != 1)
err(1, "write error");
for (i = 0; i < N; i++) {
if ((buf = mmap(0, s, PROT_READ | PROT_WRITE, MAP_SHARED, fd,
i * s)) == MAP_FAILED)
err(1, "write map");
for (j = 0; j < s; j++)
buf[j] = i % 256;
}
if (munmap(buf, s) == -1)
err(1, "unmap (write)");
close(fd);
if ((fd = open(path, O_RDONLY)) < 0)
err(1, "open(%s)", path);
for (i = 0; i < N; i++) {
if ((buf = mmap(0, s, PROT_READ, MAP_SHARED, fd, i * s)) ==
MAP_FAILED)
err(1, "write map");
for (j = 0; j < s; j++)
if (buf[j] != i % 256)
fprintf(stderr, "read %d, expected %d at %d\n",
buf[j], i % 256, i);
}
if (munmap(buf, s) == -1)
err(1, "unmap (read)");
close(fd);
unlink(path);
_exit(0);
}
int
main(void)
{
time_t start;
int i;
start = time(NULL);
while (time(NULL) - start < RUNTIME) {
for (i = 0; i < PARALLEL; i++)
if (fork() == 0)
test();
for (i = 0; i < PARALLEL; i++)
wait(NULL);
}
return(0);
}
