1/* vi: set sw=4 ts=4: */
2/*
3 * daemon implementation for uClibc
4 *
5 * Copyright (c) 1991, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * Modified for uClibc by Erik Andersen
9 *        <andersee@debian.org>, <andersen@lineo.com>
10 *
11 * The uClibc Library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Library General Public License as
13 * published by the Free Software Foundation; either version 2 of the
14 * License, or (at your option) any later version.
15 *
16 * The GNU C Library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
19 * Library General Public License for more details.
20 *
21 * You should have received a copy of the GNU Library General Public
22 * License along with the GNU C Library; see the file COPYING.LIB.  If not,
23 * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 * Boston, MA 02111-1307, USA.
25 *
26 * Original copyright notice is retained at the end of this file.
27 */
28
29#include <features.h>
30#include <fcntl.h>
31#include <paths.h>
32#include <unistd.h>
33
34
35#if __GNU_LIBRARY__ < 5
36
37int daemon( int nochdir, int noclose )
38{
39    int fd;
40
41    switch (fork()) {
42	case -1:
43	    return(-1);
44	case 0:
45	    break;
46	default:
47	    _exit(0);
48    }
49
50    if (setsid() == -1)
51	return(-1);
52
53    if (!nochdir)
54	chdir("/");
55
56    if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
57	dup2(fd, STDIN_FILENO);
58	dup2(fd, STDOUT_FILENO);
59	dup2(fd, STDERR_FILENO);
60	if (fd > 2)
61	    close(fd);
62    }
63    return(0);
64}
65#endif
66
67
68/*-
69 * Copyright (c) 1990, 1993
70 *	The Regents of the University of California.  All rights reserved.
71 *
72 * Redistribution and use in source and binary forms, with or without
73 * modification, are permitted provided that the following conditions
74 * are met:
75 * 1. Redistributions of source code must retain the above copyright
76 *    notice, this list of conditions and the following disclaimer.
77 * 2. Redistributions in binary form must reproduce the above copyright
78 *    notice, this list of conditions and the following disclaimer in the
79 *    documentation and/or other materials provided with the distribution.
80 *
81 * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
82 *		ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
83 *
84 * 4. Neither the name of the University nor the names of its contributors
85 *    may be used to endorse or promote products derived from this software
86 *    without specific prior written permission.
87 *
88 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
89 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
90 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
91 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
92 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
93 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
94 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
95 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
96 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
97 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
98 * SUCH DAMAGE.
99 */
100
101
102