1 /*
2 * Copyright (c) 2015-2016 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 "tests.h"
29 #include <assert.h>
30 #include <stdio.h>
31 #include <stdint.h>
32 #include <signal.h>
33 #include <time.h>
34 #include <sys/time.h>
35
36 int
main(void)37 main(void)
38 {
39 #if defined __x86_64__ && defined __ILP32__
40 /*
41 * x32 is broken from the beginning:
42 * https://lkml.org/lkml/2015/11/30/790
43 */
44 error_msg_and_skip("x32 is broken");
45 #else
46 const sigset_t set = {};
47 const struct sigaction act = { .sa_handler = SIG_IGN };
48 const struct itimerval itv = { .it_value.tv_usec = 111111 };
49 struct timespec req = { .tv_nsec = 222222222 }, rem;
50
51 assert(sigaction(SIGALRM, &act, NULL) == 0);
52 assert(sigprocmask(SIG_SETMASK, &set, NULL) == 0);
53 if (setitimer(ITIMER_REAL, &itv, NULL))
54 perror_msg_and_skip("setitimer");
55 if (nanosleep(&req, &rem))
56 perror_msg_and_fail("nanosleep");
57
58 printf("nanosleep\\(\\{tv_sec=%jd, tv_nsec=%jd\\}, "
59 "\\{tv_sec=%jd, tv_nsec=%jd\\}\\)"
60 " = \\? ERESTART_RESTARTBLOCK \\(Interrupted by signal\\)\n",
61 (intmax_t) req.tv_sec, (intmax_t) req.tv_nsec,
62 (intmax_t) rem.tv_sec, (intmax_t) rem.tv_nsec);
63 puts("--- SIGALRM \\{si_signo=SIGALRM, si_code=SI_KERNEL\\} ---");
64 #ifdef __arm__
65 /* old kernels used to overwrite ARM_r0 with -EINTR */
66 # define ALTERNATIVE_NANOSLEEP_REQ "0xfffffffc|"
67 #else
68 # define ALTERNATIVE_NANOSLEEP_REQ ""
69 #endif
70 printf("(nanosleep\\((%s\\{tv_sec=%jd, tv_nsec=%jd\\}), "
71 "%p|restart_syscall\\(<\\.\\.\\."
72 " resuming interrupted nanosleep \\.\\.\\.>)\\) = 0\n",
73 ALTERNATIVE_NANOSLEEP_REQ,
74 (intmax_t) req.tv_sec, (intmax_t) req.tv_nsec, &rem);
75
76 puts("\\+\\+\\+ exited with 0 \\+\\+\\+");
77 return 0;
78 #endif
79 }
80