1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * Copyright (c) 1997-2000 by Sun Microsystems, Inc. 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate */ 5*0Sstevel@tonic-gate 6*0Sstevel@tonic-gate #if defined(LIBC_SCCS) && !defined(lint) 7*0Sstevel@tonic-gate static const char sccsid[] = "@(#)daemon.c 8.1 (Berkeley) 6/4/93"; 8*0Sstevel@tonic-gate static const char rcsid[] = "$Id: daemon.c,v 8.2 1999/10/13 16:39:20 vixie Exp $"; 9*0Sstevel@tonic-gate #endif /* LIBC_SCCS and not lint */ 10*0Sstevel@tonic-gate 11*0Sstevel@tonic-gate /* 12*0Sstevel@tonic-gate * Copyright (c) 1990, 1993 13*0Sstevel@tonic-gate * The Regents of the University of California. All rights reserved. 14*0Sstevel@tonic-gate * 15*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 16*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 17*0Sstevel@tonic-gate * are met: 18*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright 19*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 20*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 21*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the 22*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution. 23*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software 24*0Sstevel@tonic-gate * must display the following acknowledgement: 25*0Sstevel@tonic-gate * This product includes software developed by the University of 26*0Sstevel@tonic-gate * California, Berkeley and its contributors. 27*0Sstevel@tonic-gate * 4. Neither the name of the University nor the names of its contributors 28*0Sstevel@tonic-gate * may be used to endorse or promote products derived from this software 29*0Sstevel@tonic-gate * without specific prior written permission. 30*0Sstevel@tonic-gate * 31*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 32*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 33*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 34*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 35*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 39*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 40*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 41*0Sstevel@tonic-gate * SUCH DAMAGE. 42*0Sstevel@tonic-gate */ 43*0Sstevel@tonic-gate 44*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate #include "port_before.h" 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate #include <fcntl.h> 49*0Sstevel@tonic-gate #include <paths.h> 50*0Sstevel@tonic-gate #include <unistd.h> 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate #include "port_after.h" 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate #ifndef NEED_DAEMON 55*0Sstevel@tonic-gate int __bind_daemon__; 56*0Sstevel@tonic-gate #else 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate int 59*0Sstevel@tonic-gate daemon(int nochdir, int noclose) { 60*0Sstevel@tonic-gate int fd; 61*0Sstevel@tonic-gate 62*0Sstevel@tonic-gate switch (fork()) { 63*0Sstevel@tonic-gate case -1: 64*0Sstevel@tonic-gate return (-1); 65*0Sstevel@tonic-gate case 0: 66*0Sstevel@tonic-gate break; 67*0Sstevel@tonic-gate default: 68*0Sstevel@tonic-gate _exit(0); 69*0Sstevel@tonic-gate } 70*0Sstevel@tonic-gate 71*0Sstevel@tonic-gate if (setsid() == -1) 72*0Sstevel@tonic-gate return (-1); 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate if (!nochdir) 75*0Sstevel@tonic-gate (void)chdir("/"); 76*0Sstevel@tonic-gate 77*0Sstevel@tonic-gate if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) { 78*0Sstevel@tonic-gate (void)dup2(fd, STDIN_FILENO); 79*0Sstevel@tonic-gate (void)dup2(fd, STDOUT_FILENO); 80*0Sstevel@tonic-gate (void)dup2(fd, STDERR_FILENO); 81*0Sstevel@tonic-gate if (fd > 2) 82*0Sstevel@tonic-gate (void)close (fd); 83*0Sstevel@tonic-gate } 84*0Sstevel@tonic-gate return (0); 85*0Sstevel@tonic-gate } 86*0Sstevel@tonic-gate #endif 87