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d889055d8e
...so that multiple functions can be subscribed. The create/destroy hooks are renamed to real/unreal because that's what they *actually* signal. Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
171 lines
3.2 KiB
C
171 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* NHRP daemon main functions
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* Copyright (c) 2014-2015 Timo Teräs
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <unistd.h>
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#include "zebra.h"
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#include "privs.h"
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#include "getopt.h"
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#include "frrevent.h"
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#include "sigevent.h"
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#include "lib/version.h"
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#include "log.h"
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#include "memory.h"
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#include "command.h"
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#include "libfrr.h"
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#include "filter.h"
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#include "nhrpd.h"
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#include "nhrp_errors.h"
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DEFINE_MGROUP(NHRPD, "NHRP");
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unsigned int debug_flags = 0;
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struct event_loop *master;
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struct timeval current_time;
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/* nhrpd options. */
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struct option longopts[] = {{0}};
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/* nhrpd privileges */
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static zebra_capabilities_t _caps_p[] = {
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ZCAP_NET_RAW, ZCAP_NET_ADMIN,
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ZCAP_DAC_OVERRIDE, /* for now needed to write to
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/proc/sys/net/ipv4/<if>/send_redirect */
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};
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struct zebra_privs_t nhrpd_privs = {
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#if defined(FRR_USER) && defined(FRR_GROUP)
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.user = FRR_USER,
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.group = FRR_GROUP,
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#endif
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#ifdef VTY_GROUP
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.vty_group = VTY_GROUP,
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#endif
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.caps_p = _caps_p,
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.cap_num_p = array_size(_caps_p),
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.cap_num_i = 0
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};
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static void parse_arguments(int argc, char **argv)
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{
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int opt;
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while (1) {
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opt = frr_getopt(argc, argv, 0);
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if (opt < 0)
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break;
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switch (opt) {
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case 0:
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break;
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default:
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frr_help_exit(1);
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}
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}
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}
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static void nhrp_sigusr1(void)
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{
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zlog_rotate();
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}
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static void nhrp_request_stop(void)
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{
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debugf(NHRP_DEBUG_COMMON, "Exiting...");
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frr_early_fini();
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nhrp_shortcut_terminate();
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nhrp_nhs_terminate();
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nhrp_zebra_terminate();
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vici_terminate();
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evmgr_terminate();
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vrf_terminate();
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nhrp_vc_terminate();
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debugf(NHRP_DEBUG_COMMON, "Done.");
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frr_fini();
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exit(0);
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}
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static struct frr_signal_t sighandlers[] = {
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{
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.signal = SIGUSR1,
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.handler = &nhrp_sigusr1,
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},
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{
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.signal = SIGINT,
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.handler = &nhrp_request_stop,
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},
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{
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.signal = SIGTERM,
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.handler = &nhrp_request_stop,
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},
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};
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static const struct frr_yang_module_info *const nhrpd_yang_modules[] = {
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&frr_filter_info,
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&frr_interface_info,
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&frr_vrf_info,
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};
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FRR_DAEMON_INFO(nhrpd, NHRP, .vty_port = NHRP_VTY_PORT,
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.proghelp = "Implementation of the NHRP routing protocol.",
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.signals = sighandlers, .n_signals = array_size(sighandlers),
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.privs = &nhrpd_privs, .yang_modules = nhrpd_yang_modules,
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.n_yang_modules = array_size(nhrpd_yang_modules),
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);
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int main(int argc, char **argv)
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{
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frr_preinit(&nhrpd_di, argc, argv);
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frr_opt_add("", longopts, "");
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parse_arguments(argc, argv);
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/* Library inits. */
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master = frr_init();
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nhrp_error_init();
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vrf_init(NULL, NULL, NULL, NULL);
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nhrp_interface_init();
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resolver_init(master);
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/*
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* Run with elevated capabilities, as for all netlink activity
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* we need privileges anyway.
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* The assert is for clang SA code where it does
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* not see the change function being set in lib
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*/
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assert(nhrpd_privs.change);
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nhrpd_privs.change(ZPRIVS_RAISE);
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evmgr_init();
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nhrp_vc_init();
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nhrp_packet_init();
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vici_init();
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hook_register_prio(if_real, 0, nhrp_ifp_create);
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hook_register_prio(if_up, 0, nhrp_ifp_up);
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hook_register_prio(if_down, 0, nhrp_ifp_down);
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hook_register_prio(if_unreal, 0, nhrp_ifp_destroy);
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nhrp_zebra_init();
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nhrp_shortcut_init();
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nhrp_config_init();
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frr_config_fork();
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frr_run(master);
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return 0;
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}
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