staticd/static_main.c

   1 /*
   2  * STATICd - main code
   3  * Copyright (C) 2018 Cumulus Networks, Inc.
   4  *               Donald Sharp
   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 "routing_nb.h"
  35
  36 #include "static_vrf.h"
  37 #include "static_vty.h"
  38 #include "static_routes.h"
  39 #include "static_zebra.h"
  40 #include "static_debug.h"
  41 #include "static_nb.h"
  42
  43 char backup_config_file[256];
  44
  45 bool mpls_enabled;
  46
  47 zebra_capabilities_t _caps_p[] = {
  48 };
  49
  50 struct zebra_privs_t static_privs = {
  51 #if defined(FRR_USER) && defined(FRR_GROUP)
  52         .user = FRR_USER,
  53         .group = FRR_GROUP,
  54 #endif
  55 #if defined(VTY_GROUP)
  56         .vty_group = VTY_GROUP,
  57 #endif
  58         .caps_p = _caps_p,
  59         .cap_num_p = array_size(_caps_p),
  60         .cap_num_i = 0};
  61
  62 struct option longopts[] = { { 0 } };
  63
  64 /* Master of threads. */
  65 struct thread_master *master;
  66
  67 static struct frr_daemon_info staticd_di;
  68 /* SIGHUP handler. */
  69 static void sighup(void)
  70 {
  71         zlog_info("SIGHUP received");
  72         vty_read_config(NULL, staticd_di.config_file, config_default);
  73 }
  74
  75 /* SIGINT / SIGTERM handler. */
  76 static void sigint(void)
  77 {
  78         zlog_notice("Terminating on signal");
  79
  80         static_vrf_terminate();
  81
  82         static_zebra_stop();
  83         frr_fini();
  84
  85         exit(0);
  86 }
  87
  88 /* SIGUSR1 handler. */
  89 static void sigusr1(void)
  90 {
  91         zlog_rotate();
  92 }
  93
  94 struct frr_signal_t static_signals[] = {
  95         {
  96                 .signal = SIGHUP,
  97                 .handler = &sighup,
  98         },
  99         {
 100                 .signal = SIGUSR1,
 101                 .handler = &sigusr1,
 102         },
 103         {
 104                 .signal = SIGINT,
 105                 .handler = &sigint,
 106         },
 107         {
 108                 .signal = SIGTERM,
 109                 .handler = &sigint,
 110         },
 111 };
 112
 113 static const struct frr_yang_module_info *const staticd_yang_modules[] = {
 114         &frr_filter_info,
 115         &frr_interface_info,
 116         &frr_vrf_info,
 117         &frr_routing_info,
 118         &frr_staticd_info,
 119 };
 120
 121 #define STATIC_VTY_PORT 2616
 122
 123 FRR_DAEMON_INFO(staticd, STATIC, .vty_port = STATIC_VTY_PORT,
 124
 125                 .proghelp = "Implementation of STATIC.",
 126
 127                 .signals = static_signals,
 128                 .n_signals = array_size(static_signals),
 129
 130                 .privs = &static_privs, .yang_modules = staticd_yang_modules,
 131                 .n_yang_modules = array_size(staticd_yang_modules),
 132 );
 133
 134 int main(int argc, char **argv, char **envp)
 135 {
 136         frr_preinit(&staticd_di, argc, argv);
 137         frr_opt_add("", longopts, "");
 138
 139         while (1) {
 140                 int opt;
 141
 142                 opt = frr_getopt(argc, argv, NULL);
 143
 144                 if (opt == EOF)
 145                         break;
 146
 147                 switch (opt) {
 148                 case 0:
 149                         break;
 150                 default:
 151                         frr_help_exit(1);
 152                 }
 153         }
 154
 155         master = frr_init();
 156
 157         static_debug_init();
 158         static_vrf_init();
 159
 160         static_zebra_init();
 161         static_vty_init();
 162
 163         hook_register(routing_conf_event,
 164                       routing_control_plane_protocols_name_validate);
 165
 166         routing_control_plane_protocols_register_vrf_dependency();
 167
 168         snprintf(backup_config_file, sizeof(backup_config_file),
 169                  "%s/zebra.conf", frr_sysconfdir);
 170         staticd_di.backup_config_file = backup_config_file;
 171
 172         frr_config_fork();
 173         frr_run(master);
 174
 175         /* Not reached. */
 176         return 0;
 177 }