1 /*
2 * Check decoding of pause syscall.
3 *
4 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
5 * Copyright (c) 2016 Fei Jie <feij.fnst@cn.fujitsu.com>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "tests.h"
32 #include <asm/unistd.h>
33
34 #ifdef __NR_pause
35
36 # include <errno.h>
37 # include <signal.h>
38 # include <stdio.h>
39 # include <sys/time.h>
40 # include <unistd.h>
41
42 static void
handler(int sig)43 handler(int sig)
44 {
45 }
46
47 int
main(void)48 main(void)
49 {
50 const struct sigaction act = { .sa_handler = handler };
51 if (sigaction(SIGALRM, &act, NULL))
52 perror_msg_and_fail("sigaction");
53
54 sigset_t mask;
55 sigemptyset(&mask);
56 sigaddset(&mask, SIGALRM);
57 if (sigprocmask(SIG_UNBLOCK, &mask, NULL))
58 perror_msg_and_fail("sigprocmask");
59
60 const struct itimerval itv = { .it_value.tv_usec = 123456 };
61 if (setitimer(ITIMER_REAL, &itv, NULL))
62 perror_msg_and_fail("setitimer");
63
64 syscall(__NR_pause);
65 if (errno == ENOSYS)
66 printf("pause() = -1 ENOSYS (%m)\n");
67 else
68 printf("pause() = ? ERESTARTNOHAND"
69 " (To be restarted if no handler)\n");
70
71 puts("+++ exited with 0 +++");
72 return 0;
73 }
74
75 #else
76
77 SKIP_MAIN_UNDEFINED("__NR_pause")
78
79 #endif
80