1/*
2 * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 *    derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include <stdio.h>
29#include <stdint.h>
30#include <signal.h>
31#include <time.h>
32#include <sys/time.h>
33
34static void
35handler(int signo)
36{
37}
38
39int
40main(void)
41{
42	struct {
43		struct timespec ts;
44		uint32_t pad[2];
45	} req = {
46		.ts = { .tv_nsec = 0xc0de1 },
47		.pad = { 0xdeadbeef, 0xbadc0ded }
48	}, rem = {
49		.ts = { .tv_sec = 0xc0de2, .tv_nsec = 0xc0de3 },
50		.pad = { 0xdeadbeef, 0xbadc0ded }
51	};
52	const sigset_t set = {};
53	const struct sigaction act = { .sa_handler = handler };
54	const struct itimerval itv = { .it_value.tv_usec = 111111 };
55
56	if (nanosleep(&req.ts, NULL))
57		return 77;
58	printf("nanosleep({%jd, %jd}, NULL) = 0\n",
59	       (intmax_t) req.ts.tv_sec, (intmax_t) req.ts.tv_nsec);
60
61	if (!nanosleep(NULL, &rem.ts))
62		return 77;
63	printf("nanosleep(NULL, %p) = -1 EFAULT (Bad address)\n", &rem.ts);
64
65	if (nanosleep(&req.ts, &rem.ts))
66		return 77;
67	printf("nanosleep({%jd, %jd}, %p) = 0\n",
68	       (intmax_t) req.ts.tv_sec, (intmax_t) req.ts.tv_nsec, &rem.ts);
69
70	req.ts.tv_nsec = 1000000000;
71	if (!nanosleep(&req.ts, &rem.ts))
72		return 77;
73	printf("nanosleep({%jd, %jd}, %p) = -1 EINVAL (Invalid argument)\n",
74	       (intmax_t) req.ts.tv_sec, (intmax_t) req.ts.tv_nsec, &rem.ts);
75
76	if (sigaction(SIGALRM, &act, NULL))
77		return 77;
78	if (sigprocmask(SIG_SETMASK, &set, NULL))
79		return 77;
80
81	if (setitimer(ITIMER_REAL, &itv, NULL))
82		return 77;
83	printf("setitimer(ITIMER_REAL, {it_interval={%jd, %jd}"
84	       ", it_value={%jd, %jd}}, NULL) = 0\n",
85	       (intmax_t) itv.it_interval.tv_sec,
86	       (intmax_t) itv.it_interval.tv_usec,
87	       (intmax_t) itv.it_value.tv_sec,
88	       (intmax_t) itv.it_value.tv_usec);
89
90	req.ts.tv_nsec = 999999999;
91	if (!nanosleep(&req.ts, &rem.ts))
92		return 77;
93	printf("nanosleep({%jd, %jd}, {%jd, %jd})"
94	       " = ? ERESTART_RESTARTBLOCK (Interrupted by signal)\n",
95	       (intmax_t) req.ts.tv_sec, (intmax_t) req.ts.tv_nsec,
96	       (intmax_t) rem.ts.tv_sec, (intmax_t) rem.ts.tv_nsec);
97	puts("--- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---");
98
99	puts("+++ exited with 0 +++");
100	return 0;
101}
102