projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| 4d3e9548 JL |
1 | /* Copyright (C) 1992, 2001, 2003, 2004, 2009 |
| 2 | Free Software Foundation, Inc. | |
| 92d0a6a6 JR |
3 | Written by James Clark (jjc@jclark.com) |
| 4 | ||
| 5 | This file is part of groff. | |
| 6 | ||
| 7 | groff is free software; you can redistribute it and/or modify it under | |
| 8 | the terms of the GNU General Public License as published by the Free | |
| 4d3e9548 JL |
9 | Software Foundation, either version 3 of the License, or |
| 10 | (at your option) any later version. | |
| 92d0a6a6 JR |
11 | |
| 12 | groff is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 | for more details. | |
| 16 | ||
| 4d3e9548 JL |
17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 92d0a6a6 JR |
19 | |
| 20 | /* Unfortunately vendors seem to have problems writing a <signal.h> | |
| 21 | that 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 | |
| 36 | extern "C" { | |
| 37 | #endif | |
| 38 | ||
| 39 | extern void cleanup(void); | |
| 40 | ||
| 41 | static 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 | ||
| 54 | void 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 | ||
| 69 | void 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 */ |