| /* |
| * Copyright (c) 2005, Bull S.A.. All rights reserved. |
| * Created by: Sebastien Decugis |
| * Copyright (c) 2013 Cyril Hrubis <chrubis@suse.cz> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * This sample test aims to check the following assertions: |
| * |
| * If the signal action was set with the signal() function, getting it into oact |
| * then reinstalling it with act must be valid. |
| * |
| * The steps are: |
| * -> register a signal handler for SIGPIPE with signal(). |
| * -> check this signal handler works. |
| * -> change the signal handler with sigaction, saving old handler in oact. |
| * -> check the new signal handler works. |
| * -> set the old signal handler back |
| * -> check the old signal handler still works. |
| * |
| * The test fails if a signal handler does not work as expected. |
| */ |
| |
| /* We are testing conformance to IEEE Std 1003.1, 2003 Edition */ |
| #define _POSIX_C_SOURCE 200112L |
| |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <signal.h> |
| #include <errno.h> |
| |
| #include "posixtest.h" |
| |
| static volatile sig_atomic_t called = 1; |
| |
| static void handler_1() |
| { |
| called++; |
| } |
| |
| static void handler_2() |
| { |
| called--; |
| } |
| |
| int main(void) |
| { |
| int ret; |
| |
| struct sigaction sa, save; |
| |
| if (signal(SIGPIPE, handler_1) == SIG_ERR) { |
| perror("Failed to register signal handler"); |
| return PTS_UNRESOLVED; |
| } |
| |
| /* As whether signal handler is restored to default when executed |
| is implementation defined, we cannot check it was registered here. */ |
| |
| /* Set the new signal handler with sigaction*/ |
| sa.sa_flags = 0; |
| |
| sa.sa_handler = handler_2; |
| |
| ret = sigemptyset(&sa.sa_mask); |
| |
| if (ret != 0) { |
| perror("Failed to empty signal set"); |
| return PTS_UNRESOLVED; |
| } |
| |
| ret = sigaction(SIGPIPE, &sa, &save); |
| |
| if (ret != 0) { |
| perror("Failed to register signal handler"); |
| return PTS_UNRESOLVED; |
| } |
| |
| /* Check the signal handler has been set up */ |
| ret = raise(SIGPIPE); |
| |
| if (ret != 0) { |
| perror("Failed to raise signal"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (called != 0) { |
| fprintf(stderr, "Handler was not executed\n"); |
| return PTS_FAIL; |
| } |
| |
| /* Restore the first signal handler */ |
| ret = sigaction(SIGPIPE, &save, 0); |
| |
| if (ret != 0) { |
| perror("Failed to restore signal handler"); |
| return PTS_UNRESOLVED; |
| } |
| |
| /* Check the signal handler has been set up */ |
| ret = raise(SIGPIPE); |
| |
| if (ret != 0) { |
| perror("Failed to raise signal"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (called != 1) { |
| fprintf(stderr, "Handler was not executed\n"); |
| return PTS_FAIL; |
| } |
| |
| printf("Test PASSED\n"); |
| return PTS_PASS; |
| } |