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/* Signal handler and mask set in thread which calls exec.
Copyright (C) 2003-2025 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <support/xsignal.h>
static void *
tf (void *arg)
{
/* Ignore SIGUSR1 and block SIGUSR2. */
xsignal (SIGUSR1, SIG_IGN);
sigset_t ss;
sigemptyset (&ss);
sigaddset (&ss, SIGUSR2);
if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
{
puts ("1st run: sigmask failed");
exit (1);
}
char **oldargv = (char **) arg;
size_t n = 1;
while (oldargv[n] != NULL)
++n;
char **argv = (char **) alloca ((n + 1) * sizeof (char *));
for (n = 0; oldargv[n + 1] != NULL; ++n)
argv[n] = oldargv[n + 1];
argv[n++] = (char *) "--direct";
argv[n] = NULL;
execv (argv[0], argv);
puts ("execv failed");
exit (1);
}
static int
do_test (int argc, char *argv[])
{
if (argc == 1)
{
/* This is the second call. Perform the test. */
struct sigaction sa;
if (sigaction (SIGUSR1, NULL, &sa) != 0)
{
puts ("2nd run: sigaction failed");
return 1;
}
if (sa.sa_handler != SIG_IGN)
{
puts ("SIGUSR1 not ignored");
return 1;
}
sigset_t ss;
if (pthread_sigmask (SIG_SETMASK, NULL, &ss) != 0)
{
puts ("2nd run: sigmask failed");
return 1;
}
if (! sigismember (&ss, SIGUSR2))
{
puts ("SIGUSR2 not blocked");
return 1;
}
return 0;
}
pthread_t th;
if (pthread_create (&th, NULL, tf, argv) != 0)
{
puts ("create failed");
exit (1);
}
/* This call should never return. */
pthread_join (th, NULL);
puts ("join returned");
return 1;
}
#define TEST_FUNCTION do_test (argc, argv)
#include "../test-skeleton.c"
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