1 /* $OpenBSD: t_gettimeofday.c,v 1.5 2021/12/13 16:56:48 deraadt Exp $ */
2 /* $NetBSD: t_gettimeofday.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */
3
4 /*-
5 * Copyright (c) 2011 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jukka Ruohonen.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include "macros.h"
34
35 #include <sys/time.h>
36
37 #include "atf-c.h"
38 #include <errno.h>
39 #include <signal.h>
40 #include <string.h>
41
42 #ifdef __OpenBSD__
43 static void sighandler(int);
44
45 static void
sighandler(int signo)46 sighandler(int signo)
47 {
48 _exit(0);
49 }
50 #endif
51
52 ATF_TC(gettimeofday_err);
ATF_TC_HEAD(gettimeofday_err,tc)53 ATF_TC_HEAD(gettimeofday_err, tc)
54 {
55 atf_tc_set_md_var(tc, "descr", "Test errors from gettimeofday(2)");
56 }
57
ATF_TC_BODY(gettimeofday_err,tc)58 ATF_TC_BODY(gettimeofday_err, tc)
59 {
60
61 #ifdef __OpenBSD__
62 /*
63 * With userland timecounters we will generate SIGSEGV instead
64 * of failing with errno set to EFAULT. POSIX explicitly
65 * allows this behaviour.
66 */
67 ATF_REQUIRE(signal(SIGSEGV, sighandler) != SIG_ERR);
68 /* On sparc64 dereferencing -1 causes SIGBUS */
69 ATF_REQUIRE(signal(SIGBUS, sighandler) != SIG_ERR);
70 #endif
71 errno = 0;
72
73 ATF_REQUIRE_ERRNO(EFAULT, gettimeofday((void *)-1, NULL) != 0);
74 }
75
76 ATF_TC(gettimeofday_mono);
ATF_TC_HEAD(gettimeofday_mono,tc)77 ATF_TC_HEAD(gettimeofday_mono, tc)
78 {
79 atf_tc_set_md_var(tc, "descr", "Test monotonicity of gettimeofday(2)");
80 }
81
ATF_TC_BODY(gettimeofday_mono,tc)82 ATF_TC_BODY(gettimeofday_mono, tc)
83 {
84 static const size_t maxiter = 100;
85 struct timeval tv1, tv2;
86 size_t i;
87
88 for (i = 0; i < maxiter; i++) {
89
90 (void)memset(&tv1, 0, sizeof(struct timeval));
91 (void)memset(&tv2, 0, sizeof(struct timeval));
92
93 ATF_REQUIRE(gettimeofday(&tv1, NULL) == 0);
94 ATF_REQUIRE(gettimeofday(&tv2, NULL) == 0);
95
96 if (timercmp(&tv2, &tv1, <) != 0)
97 atf_tc_fail("time went backwards");
98 }
99 }
100
ATF_TP_ADD_TCS(tp)101 ATF_TP_ADD_TCS(tp)
102 {
103
104 ATF_TP_ADD_TC(tp, gettimeofday_err);
105 ATF_TP_ADD_TC(tp, gettimeofday_mono);
106
107 return atf_no_error();
108 }
109