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/* |
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* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
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* |
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* Copyright (c) 1997-2019 ircd-hybrid development team |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
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* USA |
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*/ |
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|
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/*! \file ircd_signal.c |
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* \brief responsible for ircd's signal handling. |
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* \version $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "ircd_signal.h" |
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#include "ircd.h" |
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#include "restart.h" |
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|
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|
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/* |
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* sigterm_handler - exit the server |
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*/ |
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static void |
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sigterm_handler(int sig) |
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{ |
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server_die("received signal SIGTERM", false); |
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} |
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|
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/* |
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* sighup_handler - reread the server configuration |
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*/ |
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static void |
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sighup_handler(int sig) |
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{ |
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dorehash = true; |
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} |
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|
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/* |
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* sigusr1_handler - reread the motd file |
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*/ |
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static void |
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sigusr1_handler(int sig) |
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{ |
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doremotd = true; |
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} |
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|
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/* |
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* |
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* inputs - nothing |
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* output - nothing |
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* side effects - Reaps zombies periodically |
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* -AndroSyn |
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*/ |
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static void |
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sigchld_handler(int sig) |
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{ |
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int status, errno_save = errno; |
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|
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while (waitpid(-1, &status, WNOHANG) > 0) |
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; |
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errno = errno_save; |
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} |
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|
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/* |
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* sigint_handler - restart the server |
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*/ |
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static void |
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sigint_handler(int sig) |
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{ |
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server_die("received signal SIGINT", server_state.foreground ? false : true); |
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} |
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|
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/* |
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* setup_signals - initialize signal handlers for server |
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*/ |
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void |
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setup_signals(void) |
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{ |
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struct sigaction act; |
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|
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act.sa_flags = 0; |
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act.sa_handler = SIG_IGN; |
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|
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sigemptyset(&act.sa_mask); |
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#ifdef SIGXFSZ |
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sigaddset(&act.sa_mask, SIGXFSZ); |
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#endif |
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#ifdef SIGWINCH |
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sigaddset(&act.sa_mask, SIGWINCH); |
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#endif |
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#ifdef SIGTRAP |
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sigaddset(&act.sa_mask, SIGTRAP); |
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#endif |
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sigaddset(&act.sa_mask, SIGPIPE); |
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sigaddset(&act.sa_mask, SIGALRM); |
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sigaddset(&act.sa_mask, SIGHUP); |
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sigaddset(&act.sa_mask, SIGINT); |
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sigaddset(&act.sa_mask, SIGTERM); |
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sigaddset(&act.sa_mask, SIGUSR1); |
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sigaddset(&act.sa_mask, SIGCHLD); |
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|
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#ifdef SIGXFSZ |
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sigaction(SIGXFSZ, &act, NULL); |
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#endif |
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#ifdef SIGWINCH |
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sigaction(SIGWINCH, &act, NULL); |
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#endif |
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#ifdef SIGTRAP |
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sigaction(SIGTRAP, &act, NULL); |
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#endif |
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sigaction(SIGPIPE, &act, NULL); |
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sigaction(SIGALRM, &act, NULL); |
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|
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act.sa_handler = sighup_handler; |
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sigaction(SIGHUP, &act, NULL); |
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|
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act.sa_handler = sigint_handler; |
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sigaction(SIGINT, &act, NULL); |
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|
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act.sa_handler = sigterm_handler; |
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sigaction(SIGTERM, &act, NULL); |
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|
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act.sa_handler = sigusr1_handler; |
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sigaction(SIGUSR1, &act, NULL); |
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|
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act.sa_handler = sigchld_handler; |
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sigaction(SIGCHLD, &act, NULL); |
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|
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sigprocmask(SIG_UNBLOCK, &act.sa_mask, NULL); |
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} |
