| Damien Miller | 04f8014 | 1999-11-19 15:32:34 +1100 | [diff] [blame] | 1 | /*- |
| 2 | * Copyright (c) 1990, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. All advertising materials mentioning features or use of this software |
| 14 | * must display the following acknowledgement: |
| 15 | * This product includes software developed by the University of |
| 16 | * California, Berkeley and its contributors. |
| 17 | * 4. Neither the name of the University nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | #include "config.h" |
| 35 | |
| 36 | #ifndef HAVE_DAEMON |
| 37 | |
| 38 | #if defined(LIBC_SCCS) && !defined(lint) |
| 39 | static char rcsid[] = "$OpenBSD: daemon.c,v 1.2 1996/08/19 08:22:13 tholo Exp $"; |
| 40 | #endif /* LIBC_SCCS and not lint */ |
| 41 | |
| 42 | #include <fcntl.h> |
| Damien Miller | 04f8014 | 1999-11-19 15:32:34 +1100 | [diff] [blame] | 43 | #include <unistd.h> |
| 44 | |
| Damien Miller | c6398ef | 1999-11-20 12:18:40 +1100 | [diff] [blame] | 45 | #ifdef HAVE_PATHS_H |
| 46 | # include <paths.h> |
| 47 | #endif |
| 48 | |
| Damien Miller | 04f8014 | 1999-11-19 15:32:34 +1100 | [diff] [blame] | 49 | int |
| 50 | daemon(nochdir, noclose) |
| 51 | int nochdir, noclose; |
| 52 | { |
| 53 | int fd; |
| 54 | |
| 55 | switch (fork()) { |
| 56 | case -1: |
| 57 | return (-1); |
| 58 | case 0: |
| 59 | break; |
| 60 | default: |
| 61 | _exit(0); |
| 62 | } |
| 63 | |
| 64 | if (setsid() == -1) |
| 65 | return (-1); |
| 66 | |
| 67 | if (!nochdir) |
| 68 | (void)chdir("/"); |
| 69 | |
| 70 | if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) { |
| 71 | (void)dup2(fd, STDIN_FILENO); |
| 72 | (void)dup2(fd, STDOUT_FILENO); |
| 73 | (void)dup2(fd, STDERR_FILENO); |
| 74 | if (fd > 2) |
| 75 | (void)close (fd); |
| 76 | } |
| 77 | return (0); |
| 78 | } |
| 79 | |
| 80 | #endif /* !HAVE_DAEMON */ |
| 81 | |