vrrpd/vrrp_main.c

   1 /*
   2  * VRRP
   3  * Copyright (C) 2018 Cumulus Networks, Inc.
   4  *               Quentin Young
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20 #include <zebra.h>
  21
  22 #include <lib/version.h>
  23 #include "getopt.h"
  24 #include "thread.h"
  25 #include "command.h"
  26 #include "log.h"
  27 #include "memory.h"
  28 #include "privs.h"
  29 #include "sigevent.h"
  30 #include "libfrr.h"
  31 #include "vrf.h"
  32 #include "nexthop.h"
  33 #include "filter.h"
  34 #include "if.h"
  35
  36 #include "vrrp.h"
  37 #include "vrrp_zebra.h"
  38 #include "vrrp_vty.h"
  39
  40 char backup_config_file[256];
  41
  42 zebra_capabilities_t _caps_p[] = {
  43         ZCAP_NET_RAW,
  44 };
  45
  46 struct zebra_privs_t vrrp_privs = {
  47 #if defined(FRR_USER) && defined(FRR_GROUP)
  48         .user = FRR_USER,
  49         .group = FRR_GROUP,
  50 #endif
  51 #if defined(VTY_GROUP)
  52         .vty_group = VTY_GROUP,
  53 #endif
  54         .caps_p = _caps_p,
  55         .cap_num_p = array_size(_caps_p),
  56         .cap_num_i = 0};
  57
  58 struct option longopts[] = { { 0 } };
  59
  60 /* Master of threads. */
  61 struct thread_master *master;
  62
  63 /* SIGHUP handler. */
  64 static void sighup(void)
  65 {
  66         zlog_info("SIGHUP received");
  67 }
  68
  69 /* SIGINT / SIGTERM handler. */
  70 static void sigint(void)
  71 {
  72         zlog_notice("Terminating on signal");
  73
  74         exit(0);
  75 }
  76
  77 /* SIGUSR1 handler. */
  78 static void sigusr1(void)
  79 {
  80         zlog_rotate();
  81 }
  82
  83 struct quagga_signal_t vrrp_signals[] = {
  84         {
  85                 .signal = SIGHUP,
  86                 .handler = &sighup,
  87         },
  88         {
  89                 .signal = SIGUSR1,
  90                 .handler = &sigusr1,
  91         },
  92         {
  93                 .signal = SIGINT,
  94                 .handler = &sigint,
  95         },
  96         {
  97                 .signal = SIGTERM,
  98                 .handler = &sigint,
  99         },
 100 };
 101
 102 static const struct frr_yang_module_info *vrrp_yang_modules[] = {
 103         &frr_interface_info,
 104 };
 105
 106 #define VRRP_VTY_PORT 2617
 107
 108 FRR_DAEMON_INFO(vrrpd, VRRP, .vty_port = VRRP_VTY_PORT,
 109                 .proghelp = "Virtual Router Redundancy Protocol",
 110                 .signals = vrrp_signals,
 111                 .n_signals = array_size(vrrp_signals),
 112                 .privs = &vrrp_privs,
 113                 .yang_modules = vrrp_yang_modules,
 114                 .n_yang_modules = array_size(vrrp_yang_modules),
 115 )
 116
 117 int main(int argc, char **argv, char **envp)
 118 {
 119         frr_preinit(&vrrpd_di, argc, argv);
 120         frr_opt_add("", longopts, "");
 121
 122         while (1) {
 123                 int opt;
 124
 125                 opt = frr_getopt(argc, argv, NULL);
 126
 127                 if (opt == EOF)
 128                         break;
 129
 130                 switch (opt) {
 131                 case 0:
 132                         break;
 133                 default:
 134                         frr_help_exit(1);
 135                         break;
 136                 }
 137         }
 138
 139         master = frr_init();
 140
 141         vrrp_zebra_init();
 142         vrrp_vty_init();
 143         vrrp_init();
 144
 145         snprintf(backup_config_file, sizeof(backup_config_file),
 146                  "%s/vrrpd.conf", frr_sysconfdir);
 147         vrrpd_di.backup_config_file = backup_config_file;
 148
 149         frr_config_fork();
 150         frr_run(master);
 151
 152         /* Not reached. */
 153         return 0;
 154 }