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