[openssh.git] / openbsd-compat / daemon.c

/*-
 * 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.
 */

#include "includes.h"

#ifndef HAVE_DAEMON

#if defined(LIBC_SCCS) && !defined(lint)
static char rcsid[] = "$OpenBSD: daemon.c,v 1.3 2003/06/02 20:18:34 millert Exp $";
#endif /* LIBC_SCCS and not lint */

int
daemon(nochdir, noclose)
	int nochdir, noclose;
{
	int fd;

	switch (fork()) {
	case -1:
		return (-1);
	case 0:
#ifdef HAVE_CYGWIN
		register_9x_service();
#endif
		break;
	default:
#ifdef HAVE_CYGWIN
		/*
		 * This sleep avoids a race condition which kills the
		 * child process if parent is started by a NT/W2K service.
		 */
		sleep(1);
#endif
		_exit(0);
	}

	if (setsid() == -1)
		return (-1);

	if (!nochdir)
		(void)chdir("/");

	if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
		(void)dup2(fd, STDIN_FILENO);
		(void)dup2(fd, STDOUT_FILENO);
		(void)dup2(fd, STDERR_FILENO);
		if (fd > 2)
			(void)close (fd);
	}
	return (0);
}

#endif /* !HAVE_DAEMON */
Commit	Line	Data
beb43d31	1	/*-
	2	* Copyright (c) 1990, 1993
	3	* The Regents of the University of California. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
3e67f7df	13	* 3. Neither the name of the University nor the names of its contributors
beb43d31	14	* may be used to endorse or promote products derived from this software
	15	* without specific prior written permission.
	16	*
	17	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	18	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	19	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	20	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	21	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	22	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	23	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	25	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	27	* SUCH DAMAGE.
	28	*/
	29
0b65b628	30	#include "includes.h"
beb43d31	31
	32	#ifndef HAVE_DAEMON
	33
	34	#if defined(LIBC_SCCS) && !defined(lint)
3e67f7df	35	static char rcsid[] = "$OpenBSD: daemon.c,v 1.3 2003/06/02 20:18:34 millert Exp $";
beb43d31	36	#endif /* LIBC_SCCS and not lint */
beb43d31	37
beb43d31	38	int
	39	daemon(nochdir, noclose)
	40	int nochdir, noclose;
	41	{
	42	int fd;
	43
	44	switch (fork()) {
	45	case -1:
	46	return (-1);
	47	case 0:
ffb8d130	48	#ifdef HAVE_CYGWIN
	49	register_9x_service();
	50	#endif
beb43d31	51	break;
beb43d31	52	default:
3c62e7eb	53	#ifdef HAVE_CYGWIN
	54	/*
	55	* This sleep avoids a race condition which kills the
	56	* child process if parent is started by a NT/W2K service.
	57	*/
	58	sleep(1);
	59	#endif
beb43d31	60	_exit(0);
	61	}
	62
	63	if (setsid() == -1)
	64	return (-1);
	65
	66	if (!nochdir)
	67	(void)chdir("/");
	68
	69	if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
	70	(void)dup2(fd, STDIN_FILENO);
	71	(void)dup2(fd, STDOUT_FILENO);
	72	(void)dup2(fd, STDERR_FILENO);
	73	if (fd > 2)
	74	(void)close (fd);
	75	}
	76	return (0);
	77	}
	78
	79	#endif /* !HAVE_DAEMON */
	80