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/*
* static char *rcsid_daemon_c =
* "$Id: daemon.c 6191 2007-05-05 21:04:41Z ryo_saeba $";
*/
/*
CrossFire, A Multiplayer game for X-windows
Copyright (C) 2002 Mark Wedel & Crossfire Development Team
Copyright (C) 1992 Frank Tore Johansen
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., 675 Mass Ave, Cambridge, MA 02139, USA.
The author can be reached via e-mail to crossfire-devel@real-time.com
*/
/*
* BecomeDaemon.c
* shamelessly swiped from xdm source code.
* Appropriate copyrights kept, and hereby follow
* ERic mehlhaff, 3/11/92
*
* xdm - display manager daemon
*
* $XConsortium: daemon.c,v 1.5 89/01/20 10:43:49 jim Exp $
*
* Copyright 1988 Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of M.I.T. not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. M.I.T. makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* Author: Keith Packard, MIT X Consortium
*/
#include <global.h>
#ifndef __CEXTRACT__
#include <sproto.h>
#endif
#include <sys/ioctl.h>
#ifdef hpux
#include <sys/ptyio.h>
#endif
#include <errno.h>
#include <stdio.h>
#include <sys/file.h>
void become_daemon()
{
register int i;
int forkresult;
fputs("\n========================\n",logfile);
fputs("Begin New Server Session\n",logfile);
fputs("========================\n\n",logfile);
/*
* fork so that the process goes into the background automatically. Also
* has a nice side effect of having the child process get inherited by
* init (pid 1).
*/
if ( (forkresult = fork ()) ){ /* if parent */
if(forkresult < 0 ){
perror("Fork error!");
}
exit (0); /* then no more work to do */
}
/*
* Close standard file descriptors and get rid of controlling tty
*/
close (0);
close (1);
close (2);
/*
* Set up the standard file descriptors.
*/
(void) open ("/dev/null", O_RDONLY); /* root inode already in core */
(void) dup2 (0, 1);
(void) dup2 (0, 2);
if ((i = open ("/dev/tty", O_RDWR)) >= 0) { /* did open succeed? */
#if (defined(SYSV) || defined(hpux)) && defined(TIOCTTY)
int zero = 0;
(void) ioctl (i, TIOCTTY, &zero);
#else
# ifdef HAVE_SYS_TERMIOS_H
# include <sys/termios.h>
# else
# ifdef HAVE_SYS_TTYCOM_H
# include <sys/ttycom.h>
# endif
# endif
(void) ioctl (i, TIOCNOTTY, (char *) 0); /* detach, BSD style */
#endif
(void) close (i);
}
#ifdef HAVE_SETSID
setsid();
#else
/* Are these really different? */
# if defined(SYSV) || defined(SVR4)
setpgrp (0, 0);
# else /* Non SYSV machines */
setpgrp (0, getpid());
# endif
#endif
}
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