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#!/bin/sh
#
# Copyright (c) 2008 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.
#
# Test scenario by marcus@freebsd.org
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
. ../default.cfg
odir=`pwd`
cd /tmp
sed '1,/^EOF/d' < $odir/$0 > kinfo.c
mycc -o kinfo -Wall kinfo.c -lutil || exit 1
rm -f kinfo.c
mount | grep -q procfs || mount -t procfs procfs /proc
for i in `jot 20`; do
for j in `jot 5`; do
/tmp/kinfo &
done
for j in `jot 5`; do
wait
done
done
rm -f /tmp/kinfo
exit
EOF
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/sysctl.h>
#include <sys/param.h>
#include <sys/user.h>
#include <sys/signal.h>
#include <fcntl.h>
#include <err.h>
#include <strings.h>
#include <sys/wait.h>
#include <libutil.h>
char buf[8096];
void
handler(int i) {
exit(0);
}
/* Stir /dev/proc */
int
churning(void) {
pid_t r;
int fd, status;
for (;;) {
r = fork();
if (r == 0) {
if ((fd = open("/proc/curproc/mem", O_RDONLY)) == -1)
err(1, "open(/proc/curproc/mem)");
bzero(buf, sizeof(buf));
exit(0);
}
if (r < 0) {
perror("fork");
exit(2);
}
wait(&status);
}
}
/* Get files for each proc */
void
list(void)
{
struct kinfo_file *freep;
struct kinfo_vmentry *freep_vm;
long i;
int cnt, name[4];
struct kinfo_proc *kipp;
size_t len;
name[0] = CTL_KERN;
name[1] = KERN_PROC;
name[2] = KERN_PROC_PROC;
len = 0;
if (sysctl(name, 3, NULL, &len, NULL, 0) < 0)
err(-1, "sysctl: kern.proc.all");
kipp = malloc(len);
if (kipp == NULL)
err(1, "malloc");
if (sysctl(name, 3, kipp, &len, NULL, 0) < 0) {
free(kipp);
// warn("sysctl: kern.proc.all");
return;
}
for (i = 0; i < len / sizeof(*kipp); i++) {
/* The test starts here */
freep = kinfo_getfile(kipp[i].ki_pid, &cnt);
free(freep);
freep_vm = kinfo_getvmmap(kipp[i].ki_pid, &cnt);
free(freep_vm);
/* End test */
}
free(kipp);
}
int
main(int argc, char **argv)
{
pid_t r;
signal(SIGALRM, handler);
alarm(60);
if ((r = fork()) == 0) {
alarm(60);
for (;;)
churning();
}
if (r < 0) {
perror("fork");
exit(2);
}
for (;;)
list();
return (0);
}
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