1#!/bin/sh 2 3# 4# Copyright (c) 2008 Peter Holm <pho@FreeBSD.org> 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28# $FreeBSD$ 29# 30 31# Test scenario by marcus@freebsd.org 32 33[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 34 35. ../default.cfg 36 37odir=`pwd` 38cd /tmp 39sed '1,/^EOF/d' < $odir/$0 > fullpath.c 40cc -o fullpath -Wall fullpath.c 41rm -f fullpath.c 42cd /proc 43 44for i in `jot 5`; do 45 /tmp/fullpath & 46done 47 48for i in `jot 30`; do 49 for j in `jot 25`; do 50 pid=`perl -e 'print splice(@ARGV,rand(@ARGV),1), " ";' $(echo [0-9]*)` 51# echo $pid 52 procstat -f $pid > /dev/null 2>&1 53 procstat -f $pid > /dev/null 2>&1 54 procstat -f $pid > /dev/null 2>&1 55 procstat -f $pid > /dev/null 2>&1 56 procstat -f $pid > /dev/null 2>&1 57 done 58done 59 60for i in `jot 5`; do 61 wait 62done 63 64rm -f /tmp/fullpath 65exit 66EOF 67 68#include <stdio.h> 69#include <signal.h> 70#include <stdlib.h> 71#include <unistd.h> 72#include <err.h> 73#include <strings.h> 74#include <sys/wait.h> 75 76char buf[4096]; 77 78void 79handler(int i) { 80 exit(0); 81} 82 83int 84test(void) { 85 pid_t r; 86 int status; 87 88 for (;;) { 89 r = fork(); 90 if (r == 0) { 91 bzero(buf, sizeof(buf)); 92 exit(0); /*child dies */ 93 } 94 if (r < 0) { 95 perror("fork"); 96 exit(2); 97 } 98 wait(&status); 99 } 100 return 0; 101} 102 103int main(int argc, char **argv) 104{ 105 int i; 106 107 i = 0; 108 signal(SIGALRM, handler); 109 alarm(60); 110 111 112 return test(); 113} 114