| /* Copyright (C) 2002-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. |
| |
| 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <pthread.h> |
| #include <signal.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <sys/mman.h> |
| #include <sys/wait.h> |
| |
| |
| static sigset_t ss; |
| static pthread_barrier_t *b; |
| |
| |
| static void * |
| tf (void *arg) |
| { |
| sigdelset (&ss, SIGINT); |
| |
| if (pthread_sigmask (SIG_SETMASK, &ss, NULL) != 0) |
| { |
| puts ("2nd pthread_sigmask failed"); |
| exit (1); |
| } |
| |
| pthread_barrier_wait (b); |
| |
| int sig; |
| int res = sigwait (&ss, &sig); |
| if (res == 0) |
| { |
| printf ("sigwait returned successfully with signal %d\n", sig); |
| exit (1); |
| } |
| |
| printf ("sigwait returned with %s (%d)\n", strerror (res), res); |
| |
| return NULL; |
| } |
| |
| |
| static void |
| receiver (void) |
| { |
| pthread_t th; |
| |
| /* Make sure the process doesn't run forever. */ |
| alarm (10); |
| |
| sigfillset (&ss); |
| |
| if (pthread_sigmask (SIG_SETMASK, &ss, NULL) != 0) |
| { |
| puts ("1st pthread_sigmask failed"); |
| exit (1); |
| } |
| |
| if (pthread_create (&th, NULL, tf, NULL) != 0) |
| { |
| puts ("pthread_create failed"); |
| exit (1); |
| } |
| |
| if (pthread_join (th, NULL) == 0) |
| { |
| puts ("thread joined?!"); |
| exit (1); |
| } |
| |
| _exit (0); |
| } |
| |
| |
| static int |
| do_test (void) |
| { |
| char tmp[] = "/tmp/tst-signal1-XXXXXX"; |
| |
| int fd = mkstemp (tmp); |
| if (fd == -1) |
| { |
| puts ("mkstemp failed"); |
| exit (1); |
| } |
| |
| unlink (tmp); |
| |
| int i; |
| for (i = 0; i < 20; ++i) |
| write (fd, "foobar xyzzy", 12); |
| |
| b = mmap (NULL, sizeof (pthread_barrier_t), PROT_READ | PROT_WRITE, |
| MAP_SHARED, fd, 0); |
| if (b == MAP_FAILED) |
| { |
| puts ("mmap failed"); |
| exit (1); |
| } |
| |
| pthread_barrierattr_t ba; |
| if (pthread_barrierattr_init (&ba) != 0) |
| { |
| puts ("barrierattr_init failed"); |
| exit (1); |
| } |
| |
| if (pthread_barrierattr_setpshared (&ba, PTHREAD_PROCESS_SHARED) != 0) |
| { |
| puts ("barrierattr_setpshared failed"); |
| exit (1); |
| } |
| |
| if (pthread_barrier_init (b, &ba, 2) != 0) |
| { |
| puts ("barrier_init failed"); |
| exit (1); |
| } |
| |
| if (pthread_barrierattr_destroy (&ba) != 0) |
| { |
| puts ("barrierattr_destroy failed"); |
| exit (1); |
| } |
| |
| pid_t pid = fork (); |
| if (pid == -1) |
| { |
| puts ("fork failed"); |
| exit (1); |
| } |
| |
| if (pid == 0) |
| receiver (); |
| |
| pthread_barrier_wait (b); |
| |
| /* Wait a bit more. */ |
| struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000 }; |
| nanosleep (&ts, NULL); |
| |
| /* Send the signal. */ |
| puts ("sending the signal now"); |
| kill (pid, SIGINT); |
| |
| /* Wait for the process to terminate. */ |
| int status; |
| if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid) |
| { |
| puts ("wrong child reported terminated"); |
| exit (1); |
| } |
| |
| if (!WIFSIGNALED (status)) |
| { |
| puts ("child wasn't signalled"); |
| exit (1); |
| } |
| |
| if (WTERMSIG (status) != SIGINT) |
| { |
| puts ("child not terminated with SIGINT"); |
| exit (1); |
| } |
| |
| return 0; |
| } |
| |
| #define TEST_FUNCTION do_test () |
| #include "../test-skeleton.c" |