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
34 static void
handler(int signo)35 handler(int signo)
36 {
37 }
38
39 int
main(void)40 main(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