ircd-hybrid/src/ircd_signal.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  ircd_signal.c: responsible for ircd's signal handling
 *
 *  Copyright (C) 2002 by the past and present ircd coders, and others.
 *
 *  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
 *
 *  $Id$
 */

#include "stdinc.h"
#include "common.h"
#include "ircd_signal.h"
#include "ircd.h"         /* dorehash */
#include "restart.h"      /* server_reboot */

/*
 * signal_handler - general handler for ircd signals
 */
static void
signal_handler(int sig)
{
  switch (sig)
  {
    case SIG_DIE:
      server_die("received signal SIGTERM", NO);
    case SIG_RESTART:
      server_die("received signal SIGINT", !server_state.foreground);
    case SIG_REHASH:
      dorehash = 1;
      break;
    case SIG_REMOTD:
      doremotd = 1;
  }
}

#ifndef _WIN32
/*
 * 
 * inputs       - nothing
 * output       - nothing
 * side effects - Reaps zombies periodically
 * -AndroSyn
 */
static void
sigchld_handler(int sig)
{
  int status;
  waitpid(-1, &status, WNOHANG);
}
#endif

/*
 * setup_signals - initialize signal handlers for server
 */
void 
setup_signals(void)
{
#ifdef _WIN32
  dispatch_wm_signal = signal_handler;
#else
  struct sigaction act;

  act.sa_flags = 0;
  act.sa_handler = SIG_IGN;
  sigemptyset(&act.sa_mask);
  sigaddset(&act.sa_mask, SIGPIPE);
  sigaddset(&act.sa_mask, SIGALRM);
#ifdef SIGTRAP
  sigaddset(&act.sa_mask, SIGTRAP);
#endif

#ifdef SIGWINCH
  sigaddset(&act.sa_mask, SIGWINCH);
  sigaction(SIGWINCH, &act, 0);
#endif
  sigaction(SIGPIPE, &act, 0);
#ifdef SIGTRAP
  sigaction(SIGTRAP, &act, 0);
#endif

  act.sa_handler = signal_handler;
  sigemptyset(&act.sa_mask);
  sigaddset(&act.sa_mask, SIG_REHASH);
  sigaction(SIG_REHASH, &act, 0);

  sigaddset(&act.sa_mask, SIG_RESTART);
  sigaction(SIG_RESTART, &act, 0);

  sigaddset(&act.sa_mask, SIG_DIE);
  sigaction(SIG_DIE, &act, 0);

  sigaddset(&act.sa_mask, SIG_REMOTD);
  sigaction(SIG_REMOTD, &act, 0);

  act.sa_handler = sigchld_handler;
  sigaddset(&act.sa_mask, SIGCHLD);
  sigaction(SIGCHLD, &act, 0);
#endif
}
Revision:	78
Committed:	Tue Oct 4 21:16:00 2005 UTC (20 years, 10 months ago) by adx
Content type:	text/x-csrc
File size:	2726 byte(s)
Log Message:	- further win32 fixes, use ircd_signal.c interface (signals are wrapped around WM_USER's wParam) - note that the callback for WM_SIGNAL (ie WM_USER) defined in libio is independent from the ircd, ie variable dispatch_wm_signal is set in ircd_signal.c. - now it compiles, to do: turn libio into a DLL to allow symbol references in m_*.dll protocol modules.
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* ircd_signal.c: responsible for ircd's signal handling
4			*
5			* Copyright (C) 2002 by the past and present ircd coders, and others.
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20			* USA
21			*
22	knight	31	* $Id$
23	adx	30	*/
24
25			#include "stdinc.h"
26			#include "common.h"
27			#include "ircd_signal.h"
28			#include "ircd.h" /* dorehash */
29			#include "restart.h" /* server_reboot */
30
31			/*
32	adx	78	* signal_handler - general handler for ircd signals
33	adx	30	*/
34			static void
35	adx	78	signal_handler(int sig)
36	adx	30	{
37	adx	78	switch (sig)
38			{
39			case SIG_DIE:
40			server_die("received signal SIGTERM", NO);
41			case SIG_RESTART:
42			server_die("received signal SIGINT", !server_state.foreground);
43			case SIG_REHASH:
44			dorehash = 1;
45			break;
46			case SIG_REMOTD:
47			doremotd = 1;
48			}
49	adx	30	}
50
51	adx	78	#ifndef _WIN32
52	adx	30	/*
53			*
54			* inputs - nothing
55			* output - nothing
56			* side effects - Reaps zombies periodically
57			* -AndroSyn
58			*/
59			static void
60			sigchld_handler(int sig)
61			{
62			int status;
63			waitpid(-1, &status, WNOHANG);
64			}
65	adx	78	#endif
66	adx	30
67			/*
68			* setup_signals - initialize signal handlers for server
69			*/
70			void
71			setup_signals(void)
72			{
73	adx	78	#ifdef _WIN32
74			dispatch_wm_signal = signal_handler;
75			#else
76	adx	30	struct sigaction act;
77
78			act.sa_flags = 0;
79			act.sa_handler = SIG_IGN;
80			sigemptyset(&act.sa_mask);
81			sigaddset(&act.sa_mask, SIGPIPE);
82			sigaddset(&act.sa_mask, SIGALRM);
83			#ifdef SIGTRAP
84			sigaddset(&act.sa_mask, SIGTRAP);
85			#endif
86
87			#ifdef SIGWINCH
88			sigaddset(&act.sa_mask, SIGWINCH);
89			sigaction(SIGWINCH, &act, 0);
90			#endif
91			sigaction(SIGPIPE, &act, 0);
92			#ifdef SIGTRAP
93			sigaction(SIGTRAP, &act, 0);
94			#endif
95
96	adx	78	act.sa_handler = signal_handler;
97	adx	30	sigemptyset(&act.sa_mask);
98	adx	78	sigaddset(&act.sa_mask, SIG_REHASH);
99			sigaction(SIG_REHASH, &act, 0);
100	adx	30
101	adx	78	sigaddset(&act.sa_mask, SIG_RESTART);
102			sigaction(SIG_RESTART, &act, 0);
103	adx	30
104	adx	78	sigaddset(&act.sa_mask, SIG_DIE);
105			sigaction(SIG_DIE, &act, 0);
106	adx	30
107	adx	78	sigaddset(&act.sa_mask, SIG_REMOTD);
108			sigaction(SIG_REMOTD, &act, 0);
109	adx	30
110			act.sa_handler = sigchld_handler;
111			sigaddset(&act.sa_mask, SIGCHLD);
112			sigaction(SIGCHLD, &act, 0);
113	adx	78	#endif
114	adx	30	}