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 
54 static pid_t parent;
55 static int thread_survived = 0;
56 
57 static void *
58 print_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 
69 ATF_TC(fork);
70 ATF_TC_HEAD(fork, tc)
71 {
72 	atf_tc_set_md_var(tc, "descr",
73 		"Checks that child process doesn't get threads");
74 }
75 ATF_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 
102 ATF_TP_ADD_TCS(tp)
103 {
104 	ATF_TP_ADD_TC(tp, fork);
105 
106 	return atf_no_error();
107 }
108