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116 lines
2.6 KiB
C
116 lines
2.6 KiB
C
/* Signal handler and mask set in thread which calls exec.
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Copyright (C) 2003-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <pthread.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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static void *
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tf (void *arg)
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{
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/* Ignore SIGUSR1 and block SIGUSR2. */
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if (sigignore (SIGUSR1) != 0)
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{
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puts ("sigignore failed");
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exit (1);
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}
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sigset_t ss;
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sigemptyset (&ss);
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sigaddset (&ss, SIGUSR2);
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if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
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{
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puts ("1st run: sigmask failed");
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exit (1);
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}
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char **oldargv = (char **) arg;
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size_t n = 1;
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while (oldargv[n] != NULL)
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++n;
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char **argv = (char **) alloca ((n + 1) * sizeof (char *));
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for (n = 0; oldargv[n + 1] != NULL; ++n)
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argv[n] = oldargv[n + 1];
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argv[n++] = (char *) "--direct";
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argv[n] = NULL;
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execv (argv[0], argv);
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puts ("execv failed");
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exit (1);
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}
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static int
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do_test (int argc, char *argv[])
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{
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if (argc == 1)
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{
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/* This is the second call. Perform the test. */
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struct sigaction sa;
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if (sigaction (SIGUSR1, NULL, &sa) != 0)
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{
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puts ("2nd run: sigaction failed");
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return 1;
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}
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if (sa.sa_handler != SIG_IGN)
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{
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puts ("SIGUSR1 not ignored");
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return 1;
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}
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sigset_t ss;
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if (pthread_sigmask (SIG_SETMASK, NULL, &ss) != 0)
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{
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puts ("2nd run: sigmask failed");
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return 1;
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}
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if (! sigismember (&ss, SIGUSR2))
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{
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puts ("SIGUSR2 not blocked");
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return 1;
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}
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return 0;
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}
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pthread_t th;
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if (pthread_create (&th, NULL, tf, argv) != 0)
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{
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puts ("create failed");
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exit (1);
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}
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/* This call should never return. */
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pthread_join (th, NULL);
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puts ("join returned");
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return 1;
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}
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#define TEST_FUNCTION do_test (argc, argv)
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#include "../test-skeleton.c"
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