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
  35 #include "vrrp.h"
  36 #include "vrrp_zebra.h"
  37 #include "vrrp_vty.h"
  38
  39 char backup_config_file[256];
  40
  41 zebra_capabilities_t _caps_p[] = {
  42 };
  43
  44 struct zebra_privs_t vrrp_privs = {
  45 #if defined(FRR_USER) && defined(FRR_GROUP)
  46         .user = FRR_USER,
  47         .group = FRR_GROUP,
  48 #endif
  49 #if defined(VTY_GROUP)
  50         .vty_group = VTY_GROUP,
  51 #endif
  52         .caps_p = _caps_p,
  53         .cap_num_p = array_size(_caps_p),
  54         .cap_num_i = 0};
  55
  56 struct option longopts[] = { { 0 } };
  57
  58 /* Master of threads. */
  59 struct thread_master *master;
  60
  61 /* SIGHUP handler. */
  62 static void sighup(void)
  63 {
  64         zlog_info("SIGHUP received");
  65 }
  66
  67 /* SIGINT / SIGTERM handler. */
  68 static void sigint(void)
  69 {
  70         zlog_notice("Terminating on signal");
  71
  72         exit(0);
  73 }
  74
  75 /* SIGUSR1 handler. */
  76 static void sigusr1(void)
  77 {
  78         zlog_rotate();
  79 }
  80
  81 struct quagga_signal_t vrrp_signals[] = {
  82         {
  83                 .signal = SIGHUP,
  84                 .handler = &sighup,
  85         },
  86         {
  87                 .signal = SIGUSR1,
  88                 .handler = &sigusr1,
  89         },
  90         {
  91                 .signal = SIGINT,
  92                 .handler = &sigint,
  93         },
  94         {
  95                 .signal = SIGTERM,
  96                 .handler = &sigint,
  97         },
  98 };
  99
 100 static const struct frr_yang_module_info *vrrp_yang_modules[] = {
 101 };
 102
 103 #define VRRP_VTY_PORT 2617
 104
 105 FRR_DAEMON_INFO(vrrpd, VRRP, .vty_port = VRRP_VTY_PORT,
 106                 .proghelp = "Virtual Router Redundancy Protocol",
 107                 .signals = vrrp_signals,
 108                 .n_signals = array_size(vrrp_signals),
 109                 .privs = &vrrp_privs,
 110                 .yang_modules = vrrp_yang_modules,
 111                 .n_yang_modules = array_size(vrrp_yang_modules),
 112 )
 113
 114 int main(int argc, char **argv, char **envp)
 115 {
 116         frr_preinit(&vrrpd_di, argc, argv);
 117         frr_opt_add("", longopts, "");
 118
 119         while (1) {
 120                 int opt;
 121
 122                 opt = frr_getopt(argc, argv, NULL);
 123
 124                 if (opt == EOF)
 125                         break;
 126
 127                 switch (opt) {
 128                 case 0:
 129                         break;
 130                 default:
 131                         frr_help_exit(1);
 132                         break;
 133                 }
 134         }
 135
 136         master = frr_init();
 137
 138         vrrp_zebra_init();
 139         vrrp_vty_init();
 140         vrrp_init();
 141
 142         snprintf(backup_config_file, sizeof(backup_config_file),
 143                  "%s/vrrpd.conf", frr_sysconfdir);
 144         vrrpd_di.backup_config_file = backup_config_file;
 145
 146         frr_config_fork();
 147         frr_run(master);
 148
 149         /* Not reached. */
 150         return 0;
 151 }