/* Copyright (C) 2002 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #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"