1#!/bin/sh 2 3# 4# Copyright (c) 2015 EMC Corp. 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 29# Test of execve(2) from a threaded program. 30# "load: 5.40 cmd: bash 24517 [vmmaps] 2.45r 0.00u 0.00s 0% 3448k" seen. 31# Fixed by r282708. 32 33. ../default.cfg 34 35here=`pwd` 36cd /tmp 37sed '1,/^EOF/d' < $here/$0 > execve.c 38mycc -o execve -Wall -Wextra -O2 execve.c -lpthread || exit 1 39rm -f execve.c 40 41daemon sh -c "(cd $here/../testcases/swap; ./swap -t 20m -i 20 -l 100)" > \ 42 /dev/null 2>&1 43sleep `jot -r 1 1 9` 44for i in `jot 2`; do 45 /tmp/execve 46done 47while pgrep -q swap; do 48 pkill -9 swap 49done 50 51rm -f /tmp/execve /tmp/execve.core 52exit 0 53EOF 54#include <sys/types.h> 55#include <sys/resource.h> 56#include <sys/stat.h> 57#include <sys/wait.h> 58 59#include <err.h> 60#include <errno.h> 61#include <fcntl.h> 62#include <pthread.h> 63#include <sched.h> 64#include <stdio.h> 65#include <stdlib.h> 66#include <string.h> 67#include <unistd.h> 68 69#define LOOPS 50 70#define PARALLEL 50 71 72volatile int go; 73 74void * 75texecve(void *arg __unused) 76{ 77 char *cmdline[] = { "/usr/bin/true", NULL }; 78 79 while (go == 0) 80 usleep(100); 81 if (execve(cmdline[0], cmdline, NULL) == -1) 82 err(1, "execve"); 83 84 return (NULL); 85} 86 87void 88test(void) 89{ 90 pthread_t tid[5]; 91 int i, rc; 92 93 go = 0; 94 95 for (i = 0; i < 5; i++) { 96 if ((rc = pthread_create(&tid[i], NULL, texecve, NULL)) != 0) 97 errc(1, rc, "texecve()"); 98 } 99 100 usleep(arc4random() % 2000); 101 go = 1; 102 103 for (i = 0; i < 5; i++) 104 if ((rc = pthread_join(tid[i], NULL)) != 0) 105 errc(1, rc, "pthread_join(%d)", i); 106 _exit(0); 107} 108 109int 110main(void) 111{ 112 struct rlimit rl; 113 int i, j; 114 115 rl.rlim_max = rl.rlim_cur = 0; 116 if (setrlimit(RLIMIT_CORE, &rl) == -1) 117 warn("setrlimit"); 118 119 for (i = 0; i < LOOPS; i++) { 120 for (j = 0; j < PARALLEL; j++) { 121 if (fork() == 0) 122 test(); 123 } 124 125 for (j = 0; j < PARALLEL; j++) 126 wait(NULL); 127 } 128 129 return (0); 130} 131