/* vi: set sw=4 ts=4: */ /* * signal testing function for uClibc * * Copyright (C) 2000 by Lineo, inc. and Erik Andersen * Copyright (C) 2000,2001 by Erik Andersen <andersen@uclibc.org> * Written by Erik Andersen <andersen@uclibc.org> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU Library General Public License as published by * the Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * This program 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 Library General Public License * for more details. * * You should have received a copy of the GNU Library General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include <errno.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <fcntl.h> #include <signal.h> /* -------------------------------------------------*/ /* This stuff is common to all the testing routines */ /* -------------------------------------------------*/ const char *it = "<UNSET>"; /* Routine name for message routines. */ size_t errors = 0; void check(int thing, int number) { if (!thing) { printf("%s: flunked test %d\n", it, number); ++errors; } } void equal(const char *a, const char *b, int number) { check(a != NULL && b != NULL && (strcmp(a, b) == 0), number); } /* -------------------------------------------------*/ /* Let the tests begin.... */ /* -------------------------------------------------*/ int global_int = 0; void set_global_int_to_one(int signum) { printf ("Received signal %d (%s).\n", signum, strsignal(signum)); global_int = 1; return; } void signal_test_1(void) { global_int = 0; it = "global variable set from signal handler"; if (signal(SIGUSR1, set_global_int_to_one) == SIG_ERR) { perror("signal(SIGUSR1) failed"); exit(-1); } raise(SIGUSR1); /* This should already have jumped to the signal handler */ check((global_int == 1), 1); global_int = 0; if (signal(SIGUSR1, SIG_IGN) == SIG_ERR) { perror("signal(SIGUSR1) failed"); exit(-1); } raise(SIGUSR1); /* This should not go to the signal handler this time since we */ check((global_int == 0), 1); } int main(void) { int status; signal_test_1(); if (errors == 0) { status = EXIT_SUCCESS; printf("No errors.\n"); } else { status = EXIT_FAILURE; printf("%lu errors.\n", (unsigned long)errors); } exit(status); }