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 */

/*
 * sigterm_handler - exit the server
 */
static void 
sigterm_handler(int sig)  
{
  server_die("received signal SIGTERM", NO);
}

/* 
 * sighup_handler - reread the server configuration
 */
static void 
sighup_handler(int sig)
{
  dorehash = 1;
}

/*
 * sigusr1_handler - reread the motd file
 */
static void
sigusr1_handler(int sig)
{
  doremotd = 1;
}

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

/*
 * sigint_handler - restart the server
 */
static void 
sigint_handler(int sig)
{
  if (server_state.foreground)
    server_die("SIGINT received", NO);
  else
    restart("SIGINT received");
}

/*
 * setup_signals - initialize signal handlers for server
 */
void 
setup_signals(void)
{
  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 = sighup_handler;
  sigemptyset(&act.sa_mask);
  sigaddset(&act.sa_mask, SIGHUP);
  sigaction(SIGHUP, &act, 0);

  act.sa_handler = sigint_handler;
  sigaddset(&act.sa_mask, SIGINT);
  sigaction(SIGINT, &act, 0);

  act.sa_handler = sigterm_handler;
  sigaddset(&act.sa_mask, SIGTERM);
  sigaction(SIGTERM, &act, 0);

  act.sa_handler = sigusr1_handler;
  sigaddset(&act.sa_mask, SIGUSR1);
  sigaction(SIGUSR1, &act, 0);

  act.sa_handler = sigchld_handler;
  sigaddset(&act.sa_mask, SIGCHLD);
  sigaction(SIGCHLD, &act, 0);
}
Revision:	69
Committed:	Tue Oct 4 16:09:51 2005 UTC (20 years, 10 months ago) by adx
Content type:	text/x-csrc
File size:	2899 byte(s)
Log Message:	- splitted ircd/libio, all headers connected with libio sources have been moved for internal use only. To use libio interface, include "libio.h" (which is already done in "stdinc.h")
#	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			* sigterm_handler - exit the server
33			*/
34			static void
35			sigterm_handler(int sig)
36			{
37			server_die("received signal SIGTERM", NO);
38			}
39
40			/*
41			* sighup_handler - reread the server configuration
42			*/
43			static void
44			sighup_handler(int sig)
45			{
46			dorehash = 1;
47			}
48
49			/*
50			* sigusr1_handler - reread the motd file
51			*/
52			static void
53			sigusr1_handler(int sig)
54			{
55			doremotd = 1;
56			}
57
58			/*
59			*
60			* inputs - nothing
61			* output - nothing
62			* side effects - Reaps zombies periodically
63			* -AndroSyn
64			*/
65			static void
66			sigchld_handler(int sig)
67			{
68			int status;
69			waitpid(-1, &status, WNOHANG);
70			}
71
72			/*
73			* sigint_handler - restart the server
74			*/
75			static void
76			sigint_handler(int sig)
77			{
78			if (server_state.foreground)
79			server_die("SIGINT received", NO);
80			else
81			restart("SIGINT received");
82			}
83
84			/*
85			* setup_signals - initialize signal handlers for server
86			*/
87			void
88			setup_signals(void)
89			{
90			struct sigaction act;
91
92			act.sa_flags = 0;
93			act.sa_handler = SIG_IGN;
94			sigemptyset(&act.sa_mask);
95			sigaddset(&act.sa_mask, SIGPIPE);
96			sigaddset(&act.sa_mask, SIGALRM);
97			#ifdef SIGTRAP
98			sigaddset(&act.sa_mask, SIGTRAP);
99			#endif
100
101			#ifdef SIGWINCH
102			sigaddset(&act.sa_mask, SIGWINCH);
103			sigaction(SIGWINCH, &act, 0);
104			#endif
105			sigaction(SIGPIPE, &act, 0);
106			#ifdef SIGTRAP
107			sigaction(SIGTRAP, &act, 0);
108			#endif
109
110			act.sa_handler = sighup_handler;
111			sigemptyset(&act.sa_mask);
112			sigaddset(&act.sa_mask, SIGHUP);
113			sigaction(SIGHUP, &act, 0);
114
115			act.sa_handler = sigint_handler;
116			sigaddset(&act.sa_mask, SIGINT);
117			sigaction(SIGINT, &act, 0);
118
119			act.sa_handler = sigterm_handler;
120			sigaddset(&act.sa_mask, SIGTERM);
121			sigaction(SIGTERM, &act, 0);
122
123			act.sa_handler = sigusr1_handler;
124			sigaddset(&act.sa_mask, SIGUSR1);
125			sigaction(SIGUSR1, &act, 0);
126
127			act.sa_handler = sigchld_handler;
128			sigaddset(&act.sa_mask, SIGCHLD);
129			sigaction(SIGCHLD, &act, 0);
130			}