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3c0ef626 | 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. | |
0fff78ff | 13 | * 3. Neither the name of the University nor the names of its contributors |
3c0ef626 | 14 | * may be used to endorse or promote products derived from this software |
15 | * without specific prior written permission. | |
16 | * | |
17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
27 | * SUCH DAMAGE. | |
28 | */ | |
29 | ||
30 | #include "includes.h" | |
31 | ||
32 | #ifndef HAVE_DAEMON | |
33 | ||
34 | #if defined(LIBC_SCCS) && !defined(lint) | |
0fff78ff | 35 | static char rcsid[] = "$OpenBSD: daemon.c,v 1.5 2003/07/15 17:32:41 deraadt Exp $"; |
3c0ef626 | 36 | #endif /* LIBC_SCCS and not lint */ |
37 | ||
38 | int | |
0fff78ff | 39 | daemon(int nochdir, int noclose) |
3c0ef626 | 40 | { |
41 | int fd; | |
42 | ||
43 | switch (fork()) { | |
44 | case -1: | |
45 | return (-1); | |
46 | case 0: | |
e9a17296 | 47 | #ifdef HAVE_CYGWIN |
48 | register_9x_service(); | |
49 | #endif | |
3c0ef626 | 50 | break; |
51 | default: | |
52 | #ifdef HAVE_CYGWIN | |
53 | /* | |
54 | * This sleep avoids a race condition which kills the | |
55 | * child process if parent is started by a NT/W2K service. | |
56 | */ | |
57 | sleep(1); | |
58 | #endif | |
59 | _exit(0); | |
60 | } | |
61 | ||
62 | if (setsid() == -1) | |
63 | return (-1); | |
64 | ||
65 | if (!nochdir) | |
66 | (void)chdir("/"); | |
67 | ||
68 | if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) { | |
69 | (void)dup2(fd, STDIN_FILENO); | |
70 | (void)dup2(fd, STDOUT_FILENO); | |
71 | (void)dup2(fd, STDERR_FILENO); | |
72 | if (fd > 2) | |
73 | (void)close (fd); | |
74 | } | |
75 | return (0); | |
76 | } | |
77 | ||
78 | #endif /* !HAVE_DAEMON */ | |
79 |