staticd/static_main.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * STATICd - main code
   4  * Copyright (C) 2018 Cumulus Networks, Inc.
   5  *               Donald Sharp
   6  */
   7 #include <zebra.h>
   8
   9 #include <lib/version.h>
  10 #include "getopt.h"
  11 #include "thread.h"
  12 #include "command.h"
  13 #include "log.h"
  14 #include "memory.h"
  15 #include "privs.h"
  16 #include "sigevent.h"
  17 #include "libfrr.h"
  18 #include "vrf.h"
  19 #include "nexthop.h"
  20 #include "filter.h"
  21 #include "routing_nb.h"
  22
  23 #include "static_vrf.h"
  24 #include "static_vty.h"
  25 #include "static_routes.h"
  26 #include "static_zebra.h"
  27 #include "static_debug.h"
  28 #include "static_nb.h"
  29
  30 char backup_config_file[256];
  31
  32 bool mpls_enabled;
  33
  34 zebra_capabilities_t _caps_p[] = {
  35 };
  36
  37 struct zebra_privs_t static_privs = {
  38 #if defined(FRR_USER) && defined(FRR_GROUP)
  39         .user = FRR_USER,
  40         .group = FRR_GROUP,
  41 #endif
  42 #if defined(VTY_GROUP)
  43         .vty_group = VTY_GROUP,
  44 #endif
  45         .caps_p = _caps_p,
  46         .cap_num_p = array_size(_caps_p),
  47         .cap_num_i = 0};
  48
  49 struct option longopts[] = { { 0 } };
  50
  51 /* Master of threads. */
  52 struct thread_master *master;
  53
  54 static struct frr_daemon_info staticd_di;
  55 /* SIGHUP handler. */
  56 static void sighup(void)
  57 {
  58         zlog_info("SIGHUP received");
  59         vty_read_config(NULL, staticd_di.config_file, config_default);
  60 }
  61
  62 /* SIGINT / SIGTERM handler. */
  63 static void sigint(void)
  64 {
  65         zlog_notice("Terminating on signal");
  66
  67         static_vrf_terminate();
  68
  69         static_zebra_stop();
  70         frr_fini();
  71
  72         exit(0);
  73 }
  74
  75 /* SIGUSR1 handler. */
  76 static void sigusr1(void)
  77 {
  78         zlog_rotate();
  79 }
  80
  81 struct frr_signal_t static_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 *const staticd_yang_modules[] = {
 101         &frr_filter_info,
 102         &frr_interface_info,
 103         &frr_vrf_info,
 104         &frr_routing_info,
 105         &frr_staticd_info,
 106 };
 107
 108 #define STATIC_VTY_PORT 2616
 109
 110 FRR_DAEMON_INFO(staticd, STATIC, .vty_port = STATIC_VTY_PORT,
 111
 112                 .proghelp = "Implementation of STATIC.",
 113
 114                 .signals = static_signals,
 115                 .n_signals = array_size(static_signals),
 116
 117                 .privs = &static_privs, .yang_modules = staticd_yang_modules,
 118                 .n_yang_modules = array_size(staticd_yang_modules),
 119 );
 120
 121 int main(int argc, char **argv, char **envp)
 122 {
 123         frr_preinit(&staticd_di, argc, argv);
 124         frr_opt_add("", longopts, "");
 125
 126         while (1) {
 127                 int opt;
 128
 129                 opt = frr_getopt(argc, argv, NULL);
 130
 131                 if (opt == EOF)
 132                         break;
 133
 134                 switch (opt) {
 135                 case 0:
 136                         break;
 137                 default:
 138                         frr_help_exit(1);
 139                 }
 140         }
 141
 142         master = frr_init();
 143
 144         static_debug_init();
 145         static_vrf_init();
 146
 147         static_zebra_init();
 148         static_vty_init();
 149
 150         hook_register(routing_conf_event,
 151                       routing_control_plane_protocols_name_validate);
 152
 153         routing_control_plane_protocols_register_vrf_dependency();
 154
 155         snprintf(backup_config_file, sizeof(backup_config_file),
 156                  "%s/zebra.conf", frr_sysconfdir);
 157         staticd_di.backup_config_file = backup_config_file;
 158
 159         frr_config_fork();
 160         frr_run(master);
 161
 162         /* Not reached. */
 163         return 0;
 164 }