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Annotation of embedaddon/freevrrpd/vrrp_signal.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (c) 2001,2002 Sebastien Petit <spe@bsdfr.org>
        !             3:  *
        !             4:  * Redistribution and use in source forms, with and without modification,
        !             5:  * are permitted provided that the following conditions are met:
        !             6:  * 1. Redistributions of source code must retain the above copyright notice,
        !             7:  *    this list of conditions and the following disclaimer.
        !             8:  * 2. Redistributions in binary form must reproduce the above copyright notice,
        !             9:  *    this list of conditions and the following disclaimer in the documentation
        !            10:  *    and/or other materials provided with the distribution. Obviously, it
        !            11:  *    would be nice if you gave credit where credit is due but requiring it
        !            12:  *    would be too onerous.
        !            13:  * 3. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *      This product includes software developed by Sebastien Petit.
        !            16:  * 4. Neither the name of its contributors may be used to endorse or promote
        !            17:  *    products derived from this software without specific prior written
        !            18:  *    permission.
        !            19:  *
        !            20:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            30:  * SUCH DAMAGE.
        !            31:  *
        !            32:  * $Id: vrrp_signal.c,v 1.4 2004/03/21 12:58:36 spe Exp $
        !            33:  */
        !            34: 
        !            35: #include <string.h>
        !            36: #include "vrrp_signal.h"
        !            37: 
        !            38: /*
        !            39:  * On detourne les signaux SIGHUP et SIGSTOP, ainsi que le signal SIGINT.
        !            40:  */
        !            41: void 
        !            42: vrrp_signal_initialize(void)
        !            43: {
        !            44:        signal(SIGINT, vrrp_signal_quit);
        !            45:        signal(SIGABRT, vrrp_signal_quit);
        !            46:        signal(SIGTERM, vrrp_signal_quit);
        !            47:        signal(SIGHUP, vrrp_signal_shutdown);
        !            48:        signal(SIGSTOP, vrrp_signal_shutdown);
        !            49: 
        !            50:        return;
        !            51: }
        !            52: 
        !            53: /*
        !            54:  * On quitte gentiment
        !            55:  */
        !            56: void 
        !            57: vrrp_signal_quit(int sig)
        !            58: {
        !            59:        int             cpt = 0;
        !            60:        struct ether_addr ethaddr;
        !            61: 
        !            62:        vrrp_thread_mutex_lock();
        !            63:        vrrp_netgraph_shutdown_allnodes();
        !            64:        while (vr_ptr[cpt]) {
        !            65:                ethaddr = vrrp_list_get_first(vr_ptr[cpt]);
        !            66:                vrrp_interface_vripaddr_delete(vr_ptr[cpt]);
        !            67:                close(vr_ptr[cpt]->sd);
        !            68:                close(vr_ptr[cpt]->ioctl_sd);
        !            69:                cpt++;
        !            70:        }
        !            71:        vrrp_thread_mutex_unlock();
        !            72: 
        !            73:        exit(0);
        !            74: }
        !            75: 
        !            76: /*
        !            77:  * Shutdown A REGARDER DE PLUS PRES PAR RAPPORT A LA RFC A QUOI CA SERT CE
        !            78:  * TRUC ???
        !            79:  */
        !            80: void 
        !            81: vrrp_signal_shutdown(int sig)
        !            82: {
        !            83:        int             cpt = 0;
        !            84: 
        !            85:        while (vr_ptr[cpt]) {
        !            86:                switch (vr_ptr[cpt]->state) {
        !            87:                case VRRP_STATE_MASTER:
        !            88:                        vr_ptr[cpt]->priority = 0;
        !            89:                        vrrp_network_send_advertisement(vr_ptr[cpt]);
        !            90:                case VRRP_STATE_BACKUP:
        !            91:                        vrrp_state_initialize(vr_ptr[cpt]);
        !            92:                }
        !            93:                cpt++;
        !            94:        }
        !            95: 
        !            96:        return;
        !            97: }