/* Copyright (C) 2007-2012 Open Information Security Foundation

 *

 * You can copy, redistribute or modify this Program under the terms of

 * the GNU General Public License version 2 as published by the Free

 * Software Foundation.

 *

 * 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

 * version 2 along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

 * 02110-1301, USA.

 */

/**

 * \file

 *

 * \author Anoop Saldanha <anoopsaldanha@gmail.com>

 */

#include "suricata-common.h"

#include "suricata.h"

#include "util-debug.h"

#include "util-signal.h"

int UtilSignalBlock(int signum)

{

#ifndef OS_WIN32

    sigset_t x;

    if (sigemptyset(&x) < 0)

        return -1;

    if (sigaddset(&x, signum) < 0)

        return -1;

    /* don't use sigprocmask(), as it's undefined for

     * multithreaded programs. Use phtread_sigmask().

     */

    if (pthread_sigmask(SIG_BLOCK, &x, NULL) != 0)

        return -1;

#endif

    return 0;

}

int UtilSignalUnblock(int signum)

{

#ifndef OS_WIN32

    sigset_t x;

    if (sigemptyset(&x) < 0)

        return -1;

    if (sigaddset(&x, signum) < 0)

        return -1;

    if (pthread_sigmask(SIG_UNBLOCK, &x, NULL) != 0)

        return -1;

#endif

    return 0;

}

void UtilSignalHandlerSetup(int sig, void (*handler)(int))

{

#ifdef OS_WIN32

  signal(sig, handler);

#else

    struct sigaction action;

    memset(&action, 0x00, sizeof(struct sigaction));

    action.sa_handler = handler;

    sigemptyset(&(action.sa_mask));

    sigaddset(&(action.sa_mask),sig);

    action.sa_flags = 0;

    sigaction(sig, &action, 0);

#endif /* OS_WIN32 */

    return;

}

#if 0

int UtilSignalIsHandler(int sig, void (*handler)(int))

{

    struct sigaction action;

    memset(&action, 0x00, sizeof(struct sigaction));

    sigaction(sig, NULL, &action);

    return (action.sa_handler == handler);

}

#endif