t_fork.c revision 314817 
1/* $NetBSD: t_fork.c,v 1.2 2017/01/16 16:28:27 christos Exp $ */
2
3/*
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__COPYRIGHT("@(#) Copyright (c) 2008\
31 The NetBSD Foundation, inc. All rights reserved.");
32__RCSID("$NetBSD: t_fork.c,v 1.2 2017/01/16 16:28:27 christos Exp $");
33
34/*
35 * Written by Love H�rnquist �strand <lha@NetBSD.org>, March 2003.
36 * Public domain.
37 */
38
39#include <sys/types.h>
40#include <sys/wait.h>
41
42#include <errno.h>
43#include <pthread.h>
44#include <signal.h>
45#include <stdio.h>
46#include <stdlib.h>
47#include <string.h>
48#include <unistd.h>
49
50#include <atf-c.h>
51
52#include "h_common.h"
53
54static pid_t parent;
55static int thread_survived = 0;
56
57static void *
58print_pid(void *arg)
59{
60	sleep(3);
61
62	thread_survived = 1;
63	if (parent != getpid()) {
64		_exit(1);
65	}
66	return NULL;
67}
68
69ATF_TC(fork);
70ATF_TC_HEAD(fork, tc)
71{
72	atf_tc_set_md_var(tc, "descr",
73		"Checks that child process doesn't get threads");
74}
75ATF_TC_BODY(fork, tc)
76{
77	pthread_t p;
78	pid_t fork_pid;
79
80	parent = getpid();
81
82	PTHREAD_REQUIRE(pthread_create(&p, NULL, print_pid, NULL));
83
84	fork_pid = fork();
85	ATF_REQUIRE(fork_pid != -1);
86
87	if (fork_pid) {
88		int status;
89
90		PTHREAD_REQUIRE(pthread_join(p, NULL));
91		ATF_REQUIRE_MSG(thread_survived, "thread did not survive in parent");
92
93		waitpid(fork_pid, &status, 0);
94		ATF_REQUIRE_MSG(WIFEXITED(status), "child died wrongly");
95		ATF_REQUIRE_EQ_MSG(WEXITSTATUS(status), 0, "thread survived in child");
96	} else {
97		sleep(5);
98		_exit(thread_survived ? 1 : 0);
99	}
100}
101
102ATF_TP_ADD_TCS(tp)
103{
104	ATF_TP_ADD_TC(tp, fork);
105
106	return atf_no_error();
107}
108