Mercurial > hg > memcached
comparison daemon.c @ 0:30782bb1fc04 MEMCACHED_1_2_3
memcached-1.2.3
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Sun, 23 Sep 2007 03:58:34 +0400 |
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-1:000000000000 | 0:30782bb1fc04 |
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1 /* $Header: /cvsroot/wikipedia/willow/src/bin/willow/daemon.c,v 1.1 2005/05/02 19:15:21 kateturner Exp $ */ | |
2 /* $NetBSD: daemon.c,v 1.9 2003/08/07 16:42:46 agc Exp $ */ | |
3 /*- | |
4 * Copyright (c) 1990, 1993 | |
5 * The Regents of the University of California. All rights reserved. | |
6 * | |
7 * Redistribution and use in source and binary forms, with or without | |
8 * modification, are permitted provided that the following conditions | |
9 * are met: | |
10 * 1. Redistributions of source code must retain the above copyright | |
11 * notice, this list of conditions and the following disclaimer. | |
12 * 2. Redistributions in binary form must reproduce the above copyright | |
13 * notice, this list of conditions and the following disclaimer in the | |
14 * documentation and/or other materials provided with the distribution. | |
15 * 3. Neither the name of the University nor the names of its contributors | |
16 * may be used to endorse or promote products derived from this software | |
17 * without specific prior written permission. | |
18 * | |
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
29 * SUCH DAMAGE. | |
30 */ | |
31 | |
32 #if defined __SUNPRO_C || defined __DECC || defined __HP_cc | |
33 # pragma ident "@(#)$Header: /cvsroot/wikipedia/willow/src/bin/willow/daemon.c,v 1.1 2005/05/02 19:15:21 kateturner Exp $" | |
34 # pragma ident "$NetBSD: daemon.c,v 1.9 2003/08/07 16:42:46 agc Exp $" | |
35 #endif | |
36 | |
37 #include <fcntl.h> | |
38 #include <stdlib.h> | |
39 #include <unistd.h> | |
40 | |
41 int daemon(int nochdir, int noclose) | |
42 { | |
43 int fd; | |
44 | |
45 switch (fork()) { | |
46 case -1: | |
47 return (-1); | |
48 case 0: | |
49 break; | |
50 default: | |
51 _exit(EXIT_SUCCESS); | |
52 } | |
53 | |
54 if (setsid() == -1) | |
55 return (-1); | |
56 | |
57 if (nochdir == 0) | |
58 (void)chdir("/"); | |
59 | |
60 if (noclose==0 && (fd = open("/dev/null", O_RDWR, 0)) != -1) { | |
61 (void)dup2(fd, STDIN_FILENO); | |
62 (void)dup2(fd, STDOUT_FILENO); | |
63 (void)dup2(fd, STDERR_FILENO); | |
64 if (fd > STDERR_FILENO) | |
65 (void)close(fd); | |
66 } | |
67 return (0); | |
68 } |