xref: /freebsd/contrib/netbsd-tests/lib/libc/sys/t_gettimeofday.c (revision 5ca8e32633c4ffbbcd6762e5888b6a4ba0708c6c)
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 
40 ATF_TC(gettimeofday_err);
41 ATF_TC_HEAD(gettimeofday_err, tc)
42 {
43 	atf_tc_set_md_var(tc, "descr", "Test errors from gettimeofday(2)");
44 }
45 
46 ATF_TC_BODY(gettimeofday_err, tc)
47 {
48 
49 #ifdef __NetBSD__
50 	errno = 0;
51 
52 	ATF_REQUIRE_ERRNO(EFAULT, gettimeofday((void *)-1, NULL) != 0);
53 #endif
54 }
55 
56 ATF_TC(gettimeofday_mono);
57 ATF_TC_HEAD(gettimeofday_mono, tc)
58 {
59 	atf_tc_set_md_var(tc, "descr", "Test monotonicity of gettimeofday(2)");
60 }
61 
62 ATF_TC_BODY(gettimeofday_mono, tc)
63 {
64 	static const size_t maxiter = 100;
65 	struct timeval tv1, tv2;
66 	size_t i;
67 
68 	for (i = 0; i < maxiter; i++) {
69 
70 		(void)memset(&tv1, 0, sizeof(struct timeval));
71 		(void)memset(&tv2, 0, sizeof(struct timeval));
72 
73 		ATF_REQUIRE(gettimeofday(&tv1, NULL) == 0);
74 		ATF_REQUIRE(gettimeofday(&tv2, NULL) == 0);
75 
76 		if (timercmp(&tv2, &tv1, <) != 0)
77 			atf_tc_fail("time went backwards");
78 	}
79 }
80 
81 ATF_TP_ADD_TCS(tp)
82 {
83 
84 	ATF_TP_ADD_TC(tp, gettimeofday_err);
85 	ATF_TP_ADD_TC(tp, gettimeofday_mono);
86 
87 	return atf_no_error();
88 }
89