empserver/src/lib/gen/disassoc.c

72 lines
1.9 KiB
C

/*
* Empire - A multi-player, client/server Internet based war game.
* Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---
*
* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
* related information and legal notices. It is expected that any future
* projects/authors will amend these files as needed.
*
* ---
*
* disassoc.c: Fork and close
*
* Known contributors to this file:
* Doug Hay, 1998
*/
/*
* boilerplate daemon code; disassociate from
* the current tty by forking, closing all file
* descriptors, opening slash, and ioctl-ing
* TIOCNOTTY
*/
#include <sys/types.h>
#if !defined(_WIN32)
#include <sys/ioctl.h>
#include <unistd.h> /* fork close dup2 */
#endif
#include <fcntl.h>
#include "gen.h"
void
disassoc(void)
{
#if !defined(_WIN32)
int i;
if (fork() != 0)
exit(0);
for (i = 0; i < 10; i++)
(void) close(i);
(void) open("/", O_RDONLY, 0);
(void) dup2(0, 1);
(void) dup2(0, 2);
#if defined hpux || defined Rel4
setsid();
#else
i = open("/dev/tty", O_RDWR, 0);
if (i > 0) {
(void) ioctl(i, TIOCNOTTY, 0);
(void) close(i);
}
#endif
#endif
}