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/*
* Check decoding of pause syscall.
*
* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2016 Fei Jie <feij.fnst@cn.fujitsu.com>
* Copyright (c) 2016-2019 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#ifdef __NR_pause
# include <errno.h>
# include <signal.h>
# include <stdio.h>
# include <sys/time.h>
# include <unistd.h>
static void
handler(int sig)
{
}
int
main(void)
{
const struct sigaction act = { .sa_handler = handler };
if (sigaction(SIGALRM, &act, NULL))
perror_msg_and_fail("sigaction");
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, SIGALRM);
if (sigprocmask(SIG_UNBLOCK, &mask, NULL))
perror_msg_and_fail("sigprocmask");
const struct itimerval itv = { .it_value.tv_usec = 123456 };
if (setitimer(ITIMER_REAL, &itv, NULL))
perror_msg_and_fail("setitimer");
syscall(__NR_pause);
if (errno == ENOSYS)
printf("pause() = -1 ENOSYS (%m)\n");
else
printf("pause() = ? ERESTARTNOHAND"
" (To be restarted if no handler)\n");
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_pause")
#endif
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