/* $Header: /cvsroot/wikipedia/willow/src/bin/willow/daemon.c,v 1.1 2005/05/02 19:15:21 kateturner Exp $ */

/* $NetBSD: daemon.c,v 1.9 2003/08/07 16:42:46 agc Exp $ */

/*-

* Copyright (c) 1990, 1993

* The Regents of the University of California. All rights reserved.

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

* 1. Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

* 3. Neither the name of the University nor the names of its contributors

* may be used to endorse or promote products derived from this software

* without specific prior written permission.

*

* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

* SUCH DAMAGE.

*/

#if defined __SUNPRO_C || defined __DECC || defined __HP_cc

# pragma ident "@(#)$Header: /cvsroot/wikipedia/willow/src/bin/willow/daemon.c,v 1.1 2005/05/02 19:15:21 kateturner Exp $"

# pragma ident "$NetBSD: daemon.c,v 1.9 2003/08/07 16:42:46 agc Exp $"

#endif

#include <fcntl.h>

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include "memcached.h"

int daemonize(int nochdir, int noclose)

{

int fd;

switch (fork()) {

case -1:

return (-1);

case 0:

break;

default:

_exit(EXIT_SUCCESS);

}

if (setsid() == -1)

return (-1);

if (nochdir == 0) {

if(chdir("/") != 0) {

perror("chdir");

return (-1);

}

}

if (noclose == 0 && (fd = open("/dev/null", O_RDWR, 0)) != -1) {

if(dup2(fd, STDIN_FILENO) < 0) {

perror("dup2 stdin");

goto err_cleanup;

}

if(dup2(fd, STDOUT_FILENO) < 0) {

perror("dup2 stdout");

goto err_cleanup;

}

if(dup2(fd, STDERR_FILENO) < 0) {

perror("dup2 stderr");

goto err_cleanup;

}

if(close(fd) < 0) {

perror("close");

return (-1);

}

}

return (0);

err_cleanup:

close(fd);

return (-1);

}