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/*
* Copyright (c) 2015-2018 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2015-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#if defined __powerpc64__ \
|| (defined __sparc__ && defined __arch64__)
/* Old sigreturn is defined but not implemented in the kernel. */
# undef __NR_sigreturn
#endif
#ifdef __NR_sigreturn
# include <signal.h>
# include <stdio.h>
# include <stdlib.h>
# ifdef ASM_SIGRTMIN
# define RT_0 ASM_SIGRTMIN
# else
/* Linux kernel >= 3.18 defines SIGRTMIN to 32 on all architectures. */
# define RT_0 32
# endif
static void
handler(int sig)
{
}
int
main(void)
{
static sigset_t set;
sigemptyset(&set);
sigaddset(&set, SIGINT);
sigaddset(&set, SIGUSR2);
sigaddset(&set, SIGCHLD);
sigaddset(&set, RT_0 + 3);
sigaddset(&set, RT_0 + 4);
sigaddset(&set, RT_0 + 5);
sigaddset(&set, RT_0 + 26);
sigaddset(&set, RT_0 + 27);
if (sigprocmask(SIG_SETMASK, &set, NULL))
perror_msg_and_fail("sigprocmask");
sigemptyset(&set);
/* This should result to old sigreturn. */
if (signal(SIGUSR1, handler) == SIG_ERR)
perror_msg_and_fail("sigaction");
if (raise(SIGUSR1))
perror_msg_and_fail("raise");
static const char *const sigs =
(SIGUSR2 < SIGCHLD) ? "INT USR2 CHLD" : "INT CHLD USR2";
static const char *const rt_sigs = "RT_3 RT_4 RT_5 RT_26 RT_27";
printf("sigreturn({mask=[%s %s]}) = 0\n", sigs, rt_sigs);
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_sigreturn")
#endif
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