Add the DragonFly cvs id and perform general cleanups on cvs/rcs/sccs ids. Most
[dragonfly.git] / crypto / heimdal / lib / roken / daemon.c
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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.
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32 *
33 * @(#)daemon.c 8.1 (Berkeley) 6/4/93
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34 */
35
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36#ifdef HAVE_CONFIG_H
37#include <config.h>
38#endif
39
40RCSID("$Id: daemon.c,v 1.3 1997/10/04 21:55:48 joda Exp $");
41
42#ifndef HAVE_DAEMON
43
44#ifdef HAVE_FCNTL_H
45#include <fcntl.h>
46#endif
47#ifdef HAVE_PATHS_H
48#include <paths.h>
49#endif
50#ifdef HAVE_UNISTD_H
51#include <unistd.h>
52#endif
53
54#include "roken.h"
55
56int
57daemon(int nochdir, int noclose)
58{
59 int fd;
60
61 switch (fork()) {
62 case -1:
63 return (-1);
64 case 0:
65 break;
66 default:
67 _exit(0);
68 }
69
70 if (setsid() == -1)
71 return (-1);
72
73 if (!nochdir)
74 chdir("/");
75
76 if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
77 dup2(fd, STDIN_FILENO);
78 dup2(fd, STDOUT_FILENO);
79 dup2(fd, STDERR_FILENO);
80 if (fd > 2)
81 close (fd);
82 }
83 return (0);
84}
85
86#endif /* HAVE_DAEMON */