1/* $NetBSD: t_gettimeofday.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_gettimeofday.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $");
33
34#include <sys/time.h>
35
36#include <atf-c.h>
37#include <errno.h>
38#include <string.h>
39
40ATF_TC(gettimeofday_err);
41ATF_TC_HEAD(gettimeofday_err, tc)
42{
43	atf_tc_set_md_var(tc, "descr", "Test errors from gettimeofday(2)");
44}
45
46ATF_TC_BODY(gettimeofday_err, tc)
47{
48
49	errno = 0;
50
51	ATF_REQUIRE_ERRNO(EFAULT, gettimeofday((void *)-1, NULL) != 0);
52}
53
54ATF_TC(gettimeofday_mono);
55ATF_TC_HEAD(gettimeofday_mono, tc)
56{
57	atf_tc_set_md_var(tc, "descr", "Test monotonicity of gettimeofday(2)");
58}
59
60ATF_TC_BODY(gettimeofday_mono, tc)
61{
62	static const size_t maxiter = 100;
63	struct timeval tv1, tv2;
64	size_t i;
65
66	for (i = 0; i < maxiter; i++) {
67
68		(void)memset(&tv1, 0, sizeof(struct timeval));
69		(void)memset(&tv2, 0, sizeof(struct timeval));
70
71		ATF_REQUIRE(gettimeofday(&tv1, NULL) == 0);
72		ATF_REQUIRE(gettimeofday(&tv2, NULL) == 0);
73
74		if (timercmp(&tv2, &tv1, <) != 0)
75			atf_tc_fail("time went backwards");
76	}
77}
78
79ATF_TP_ADD_TCS(tp)
80{
81
82	ATF_TP_ADD_TC(tp, gettimeofday_err);
83	ATF_TP_ADD_TC(tp, gettimeofday_mono);
84
85	return atf_no_error();
86}
87