1/* Copyright (C) 1992, 2001, 2003, 2004 Free Software Foundation, Inc. 2 Written by James Clark (jjc@jclark.com) 3 4This file is part of groff. 5 6groff is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 2, or (at your option) any later 9version. 10 11groff is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16You should have received a copy of the GNU General Public License along 17with groff; see the file COPYING. If not, write to the Free Software 18Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */ 19 20/* Unfortunately vendors seem to have problems writing a <signal.h> 21that is correct for C++, so we implement all signal handling in C. */ 22 23#include <stdlib.h> 24 25#ifdef HAVE_CONFIG_H 26#include <config.h> 27#endif 28 29#include <sys/types.h> 30#include <signal.h> 31#ifdef HAVE_UNISTD_H 32#include <unistd.h> 33#endif 34 35#ifdef __cplusplus 36extern "C" { 37#endif 38 39extern void cleanup(void); 40 41static RETSIGTYPE handle_fatal_signal(int signum) 42{ 43 signal(signum, SIG_DFL); 44 cleanup(); 45#ifdef HAVE_KILL 46 kill(getpid(), signum); 47#else 48 /* MS-DOS and Win32 don't have kill(); the best compromise is 49 probably to use exit() instead. */ 50 exit(signum); 51#endif 52} 53 54void catch_fatal_signals(void) 55{ 56#ifdef SIGHUP 57 signal(SIGHUP, handle_fatal_signal); 58#endif 59 signal(SIGINT, handle_fatal_signal); 60 signal(SIGTERM, handle_fatal_signal); 61} 62 63#ifdef __cplusplus 64} 65#endif 66 67#ifndef HAVE_RENAME 68 69void ignore_fatal_signals() 70{ 71#ifdef SIGHUP 72 signal(SIGHUP, SIG_IGN); 73#endif 74 signal(SIGINT, SIG_IGN); 75 signal(SIGTERM, SIG_IGN); 76} 77 78#endif /* not HAVE_RENAME */ 79