1/* $NetBSD: t_getpid.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */
2
3/*-
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jukka Ruohonen.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31#include <sys/cdefs.h>
32__RCSID("$NetBSD: t_getpid.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $");
33
34#include <sys/wait.h>
35
36#include <stdlib.h>
37#include <pthread.h>
38#include <unistd.h>
39
40#include <atf-c.h>
41
42static int	 maxiter = 10;
43static void	*threadfunc(void *);
44
45static void *
46threadfunc(void *arg)
47{
48	*(pid_t *)arg = getpid();
49
50	return NULL;
51}
52
53ATF_TC(getpid_process);
54ATF_TC_HEAD(getpid_process, tc)
55{
56	atf_tc_set_md_var(tc, "descr", "Test getpid(2) with processes");
57}
58
59ATF_TC_BODY(getpid_process, tc)
60{
61	pid_t ppid, fpid, cpid, tpid, wpid;
62	int i, sta;
63
64	for (i = 0; i < maxiter; i++) {
65
66		tpid = getpid();
67		fpid = fork();
68
69		ATF_REQUIRE(fpid >= 0);
70
71		if (fpid == 0) {
72
73			cpid = getpid();
74			ppid = getppid();
75
76			if (tpid != ppid)
77				_exit(EXIT_FAILURE);
78
79			if (cpid == ppid)
80				_exit(EXIT_FAILURE);
81
82			if (tpid == fpid)
83				_exit(EXIT_FAILURE);
84
85			_exit(EXIT_SUCCESS);
86		}
87
88		wpid = wait(&sta);
89
90		if (wpid != fpid)
91			atf_tc_fail("PID mismatch");
92
93		ATF_REQUIRE(WIFEXITED(sta) != 0);
94
95		if (WEXITSTATUS(sta) != EXIT_SUCCESS)
96			atf_tc_fail("PID mismatch");
97	}
98}
99
100ATF_TC(getpid_thread);
101ATF_TC_HEAD(getpid_thread, tc)
102{
103	atf_tc_set_md_var(tc, "descr", "Test getpid(2) with threads");
104}
105
106ATF_TC_BODY(getpid_thread, tc)
107{
108	pid_t pid, tpid;
109	pthread_t tid;
110	int i, rv;
111
112	for (i = 0; i < maxiter; i++) {
113
114		pid = getpid();
115
116		rv = pthread_create(&tid, NULL, threadfunc, &tpid);
117		ATF_REQUIRE(rv == 0);
118
119		rv = pthread_join(tid, NULL);
120		ATF_REQUIRE(rv == 0);
121
122		if (pid != tpid)
123			atf_tc_fail("Unequal PIDs");
124	}
125}
126
127ATF_TP_ADD_TCS(tp)
128{
129
130	ATF_TP_ADD_TC(tp, getpid_process);
131	ATF_TP_ADD_TC(tp, getpid_thread);
132
133	return atf_no_error();
134}
135