server/server/daemon.C


/*
 * static char *rcsid_daemon_c =
 *   "$Id: daemon.C,v 1.4 2006-09-07 10:01:58 pippijn Exp $";
 */

/*
    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>

FILE * BecomeDaemon (const char *filename)
{
  FILE *logfile;
  int forkresult;

  if ((logfile = fopen (filename, "a")) == NULL)
    {
      fprintf (stderr, "Couldn't create logfile %s: %s\n", filename, strerror (errno));
      exit (0);
    }
  fputs ("\n========================\n", logfile);
  fputs ("Begin New Server Session\n", logfile);
  fputs ("========================\n\n", logfile);
  fflush (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 ("/", O_RDONLY);  /* root inode already in core */
  (void) dup2 (0, 1);
  (void) dup2 (0, 2);

  setsid ();
  return (logfile);
}
Revision:	1.5
Committed:	Sun Sep 10 15:59:57 2006 UTC (17 years, 9 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+46 -43 lines
Log Message:	indent
#	User	Rev	Content
1	root	1.5
2	elmex	1.1	/*
3			* static char *rcsid_daemon_c =
4	root	1.5	* "$Id: daemon.C,v 1.4 2006-09-07 10:01:58 pippijn Exp $";
5	elmex	1.1	*/
6
7			/*
8			CrossFire, A Multiplayer game for X-windows
9
10			Copyright (C) 2002 Mark Wedel & Crossfire Development Team
11			Copyright (C) 1992 Frank Tore Johansen
12
13			This program is free software; you can redistribute it and/or modify
14			it under the terms of the GNU General Public License as published by
15			the Free Software Foundation; either version 2 of the License, or
16			(at your option) any later version.
17
18			This program is distributed in the hope that it will be useful,
19			but WITHOUT ANY WARRANTY; without even the implied warranty of
20			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21			GNU General Public License for more details.
22
23			You should have received a copy of the GNU General Public License
24			along with this program; if not, write to the Free Software
25			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26
27			The author can be reached via e-mail to crossfire-devel@real-time.com
28			*/
29
30			/*
31			* BecomeDaemon.c
32			* shamelessly swiped from xdm source code.
33			* Appropriate copyrights kept, and hereby follow
34			* ERic mehlhaff, 3/11/92
35			*
36			* xdm - display manager daemon
37			*
38			* $XConsortium: daemon.c,v 1.5 89/01/20 10:43:49 jim Exp $
39			*
40			* Copyright 1988 Massachusetts Institute of Technology
41			*
42			* Permission to use, copy, modify, and distribute this software and its
43			* documentation for any purpose and without fee is hereby granted, provided
44			* that the above copyright notice appear in all copies and that both that
45			* copyright notice and this permission notice appear in supporting
46			* documentation, and that the name of M.I.T. not be used in advertising or
47			* publicity pertaining to distribution of the software without specific,
48			* written prior permission. M.I.T. makes no representations about the
49			* suitability of this software for any purpose. It is provided "as is"
50			* without express or implied warranty.
51			*
52			* Author: Keith Packard, MIT X Consortium
53			*/
54
55
56			#include <global.h>
57			#ifndef __CEXTRACT__
58	root	1.5	# include <sproto.h>
59	elmex	1.1	#endif
60			#include <sys/ioctl.h>
61			#ifdef hpux
62	root	1.5	# include <sys/ptyio.h>
63	elmex	1.1	#endif
64
65			#include <errno.h>
66			#include <stdio.h>
67			#include <sys/file.h>
68
69	root	1.5	FILE * BecomeDaemon (const char *filename)
70	elmex	1.1	{
71			FILE *logfile;
72			int forkresult;
73
74	root	1.5	if ((logfile = fopen (filename, "a")) == NULL)
75			{
76			fprintf (stderr, "Couldn't create logfile %s: %s\n", filename, strerror (errno));
77			exit (0);
78			}
79			fputs ("\n========================\n", logfile);
80			fputs ("Begin New Server Session\n", logfile);
81			fputs ("========================\n\n", logfile);
82			fflush (logfile);
83			/*
84			* fork so that the process goes into the background automatically. Also
85			* has a nice side effect of having the child process get inherited by
86			* init (pid 1).
87			*/
88
89			if ((forkresult = fork ()))
90			{ /* if parent */
91			if (forkresult < 0)
92			{
93			perror ("Fork error!");
94			}
95			exit (0); /* then no more work to do */
96			}
97
98			/*
99			* Close standard file descriptors and get rid of controlling tty
100			*/
101
102			close (0);
103			close (1);
104			close (2);
105
106			/*
107			* Set up the standard file descriptors.
108			*/
109			(void) open ("/", O_RDONLY); /* root inode already in core */
110			(void) dup2 (0, 1);
111			(void) dup2 (0, 2);
112
113			setsid ();
114			return (logfile);
115	elmex	1.1	}