ef7e76a2cd
Add a small test to prevent regressions. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20241108145237.37377-2-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/*
|
|
* Test that sigreturn() does not corrupt the signal mask.
|
|
* Block SIGUSR2 and handle SIGUSR1.
|
|
* Then sigwait() SIGUSR2, which relies on it remaining blocked.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
#include <assert.h>
|
|
#include <pthread.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
int seen_sig = -1;
|
|
|
|
static void signal_func(int sig)
|
|
{
|
|
seen_sig = sig;
|
|
}
|
|
|
|
static void *thread_func(void *arg)
|
|
{
|
|
kill(getpid(), SIGUSR2);
|
|
return NULL;
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
struct sigaction act = {
|
|
.sa_handler = signal_func,
|
|
};
|
|
pthread_t thread;
|
|
sigset_t set;
|
|
int sig;
|
|
|
|
assert(sigaction(SIGUSR1, &act, NULL) == 0);
|
|
|
|
assert(sigemptyset(&set) == 0);
|
|
assert(sigaddset(&set, SIGUSR2) == 0);
|
|
assert(sigprocmask(SIG_BLOCK, &set, NULL) == 0);
|
|
|
|
kill(getpid(), SIGUSR1);
|
|
assert(seen_sig == SIGUSR1);
|
|
|
|
assert(pthread_create(&thread, NULL, thread_func, NULL) == 0);
|
|
assert(sigwait(&set, &sig) == 0);
|
|
assert(sig == SIGUSR2);
|
|
assert(pthread_join(thread, NULL) == 0);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|