bfdbb8f260
This commit updates all authorship and copyright information to include a standard header that references the AUTHORS and CREDITS file. This standard header was written by the Debian legal team at the request of Franck Joncourt.
152 lines
3.9 KiB
C
152 lines
3.9 KiB
C
/*
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*****************************************************************************
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*
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* File: sig_handler.c
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*
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* Purpose: Signal handling dta and routines for fwknopd.
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*
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* Fwknop is developed primarily by the people listed in the file 'AUTHORS'.
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* Copyright (C) 2009–2014 fwknop developers and contributors. For a full
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* list of contributors, see the file 'CREDITS'.
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*
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* License (GNU General Public License):
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*
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*****************************************************************************
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*/
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#include "fwknopd_common.h"
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#include "log_msg.h"
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#include "sig_handler.h"
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#if HAVE_SYS_WAIT_H
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#include <sys/wait.h>
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#endif
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sig_atomic_t got_signal = 0; /* General signal flag (break capture) */
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sig_atomic_t got_sighup = 0; /* SIGHUP flag */
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sig_atomic_t got_sigint = 0; /* SIGINT flag */
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sig_atomic_t got_sigterm = 0; /* SIGTERM flag */
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sig_atomic_t got_sigusr1 = 0; /* SIGUSR1 flag */
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sig_atomic_t got_sigusr2 = 0; /* SIGUSR2 flag */
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sig_atomic_t got_sigchld = 0; /* SIGCHLD flag */
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sigset_t *csmask;
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/* SIGHUP Handler
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*/
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void
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sig_handler(int sig)
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{
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int o_errno;
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got_signal = sig;
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switch(sig) {
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case SIGHUP:
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got_sighup = 1;
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return;
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case SIGINT:
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got_sigint = 1;
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return;
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case SIGTERM:
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got_sigterm = 1;
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return;
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case SIGUSR1:
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got_sigusr1 = 1;
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return;
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case SIGUSR2:
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got_sigusr2 = 1;
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return;
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case SIGCHLD:
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o_errno = errno; /* Save errno */
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got_sigchld = 1;
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waitpid(-1, NULL, WNOHANG);
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errno = o_errno; /* restore errno (in case reset by waitpid) */
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return;
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}
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}
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/* Setup signal handlers
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*/
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int
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set_sig_handlers(void)
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{
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int err = 0;
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struct sigaction act;
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/* Clear the signal flags.
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*/
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got_signal = 0;
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got_sighup = 0;
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got_sigint = 0;
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got_sigterm = 0;
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got_sigusr1 = 0;
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got_sigusr2 = 0;
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/* Setup the handlers
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*/
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act.sa_handler = sig_handler;
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sigemptyset(&act.sa_mask);
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act.sa_flags = SA_RESTART;
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if(sigaction(SIGHUP, &act, NULL) < 0)
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{
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log_msg(LOG_ERR, "* Error setting SIGHUP handler: %s",
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strerror(errno));
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err++;
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}
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if(sigaction(SIGINT, &act, NULL) < 0)
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{
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log_msg(LOG_ERR, "* Error setting SIGINT handler: %s",
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strerror(errno));
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err++;
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}
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if(sigaction(SIGTERM, &act, NULL) < 0)
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{
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log_msg(LOG_ERR, "* Error setting SIGTERM handler: %s",
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strerror(errno));
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err++;
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}
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if(sigaction(SIGUSR1, &act, NULL) < 0)
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{
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log_msg(LOG_ERR, "* Error setting SIGUSR1 handler: %s",
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strerror(errno));
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err++;
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}
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if(sigaction(SIGUSR2, &act, NULL) < 0)
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{
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log_msg(LOG_ERR, "* Error setting SIGUSR2 handler: %s",
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strerror(errno));
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err++;
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}
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if(sigaction(SIGCHLD, &act, NULL) < 0)
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{
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log_msg(LOG_ERR, "* Error setting SIGCHLD handler: %s",
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strerror(errno));
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err++;
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}
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return(err);
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}
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/***EOF***/
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