1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) Crackerjack Project., 2007
4 * Porting from Crackerjack to LTP is done by
5 * Manas Kumar Nayak maknayak@in.ibm.com>
6 *
7 * Waits for SIGALRM in rt_sigsuspend() then checks that process mask wasn't
8 * modified.
9 */
10
11 #include <signal.h>
12 #include <errno.h>
13
14 #include "tst_test.h"
15 #include "lapi/syscalls.h"
16 #include "lapi/safe_rt_signal.h"
17 #include "lapi/signal.h"
18
sig_handler(int sig)19 static void sig_handler(int sig)
20 {
21 (void) sig;
22 }
23
verify_rt_sigsuspend(void)24 static void verify_rt_sigsuspend(void)
25 {
26 int i;
27 sigset_t set, set1, set2;
28 struct sigaction act = {.sa_handler = sig_handler};
29
30 if (sigemptyset(&set) < 0)
31 tst_brk(TFAIL | TERRNO, "sigemptyset failed");
32
33 SAFE_RT_SIGACTION(SIGALRM, &act, NULL, SIGSETSIZE);
34
35 SAFE_RT_SIGPROCMASK(0, NULL, &set1, SIGSETSIZE);
36
37 alarm(1);
38
39 TEST(tst_syscall(__NR_rt_sigsuspend, &set, SIGSETSIZE));
40
41 alarm(0);
42
43 if (TST_RET != -1)
44 tst_brk(TFAIL, "rt_sigsuspend returned %ld", TST_RET);
45
46 if (TST_ERR != EINTR)
47 tst_brk(TFAIL | TTERRNO, "rt_sigsuspend() failed unexpectedly");
48
49 tst_res(TPASS, "rt_sigsuspend() returned with -1 and EINTR");
50
51 SAFE_RT_SIGPROCMASK(0, NULL, &set2, SIGSETSIZE);
52 for (i = 1; i < SIGRTMAX; i++) {
53 if (i >= __SIGRTMIN && i < SIGRTMIN)
54 continue;
55 if (sigismember(&set1, i) != sigismember(&set2, i))
56 tst_brk(TFAIL, "signal mask not preserved");
57 }
58 tst_res(TPASS, "signal mask preserved");
59 }
60
61 static struct tst_test test = {
62 .test_all = verify_rt_sigsuspend,
63 };
64