Adding upstream version 8.4.4.upstream/8.4.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 172 insertions, 0 deletions

diff --git a/nhrpd/nhrp_main.c b/nhrpd/nhrp_main.c
new file mode 100644
index 0000000..bece89c
--- /dev/null
+++ b/nhrpd/nhrp_main.c
@@ -0,0 +1,172 @@
+/* NHRP daemon main functions
+ * Copyright (c) 2014-2015 Timo Teräs
+ *
+ * This file is free software: you may copy, redistribute and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <unistd.h>
+
+#include "zebra.h"
+#include "privs.h"
+#include "getopt.h"
+#include "thread.h"
+#include "sigevent.h"
+#include "lib/version.h"
+#include "log.h"
+#include "memory.h"
+#include "command.h"
+#include "libfrr.h"
+#include "filter.h"
+
+#include "nhrpd.h"
+#include "nhrp_errors.h"
+
+DEFINE_MGROUP(NHRPD, "NHRP");
+
+unsigned int debug_flags = 0;
+
+struct thread_master *master;
+struct timeval current_time;
+
+/* nhrpd options. */
+struct option longopts[] = {{0}};
+
+/* nhrpd privileges */
+static zebra_capabilities_t _caps_p[] = {
+	ZCAP_NET_RAW, ZCAP_NET_ADMIN,
+	ZCAP_DAC_OVERRIDE, /* for now needed to write to
+			      /proc/sys/net/ipv4/<if>/send_redirect */
+};
+
+struct zebra_privs_t nhrpd_privs = {
+#if defined(FRR_USER) && defined(FRR_GROUP)
+	.user = FRR_USER,
+	.group = FRR_GROUP,
+#endif
+#ifdef VTY_GROUP
+	.vty_group = VTY_GROUP,
+#endif
+	.caps_p = _caps_p,
+	.cap_num_p = array_size(_caps_p),
+	.cap_num_i = 0
+};
+
+
+static void parse_arguments(int argc, char **argv)
+{
+	int opt;
+
+	while (1) {
+		opt = frr_getopt(argc, argv, 0);
+		if (opt < 0)
+			break;
+
+		switch (opt) {
+		case 0:
+			break;
+		default:
+			frr_help_exit(1);
+		}
+	}
+}
+
+static void nhrp_sigusr1(void)
+{
+	zlog_rotate();
+}
+
+static void nhrp_request_stop(void)
+{
+	debugf(NHRP_DEBUG_COMMON, "Exiting...");
+	frr_early_fini();
+
+	nhrp_shortcut_terminate();
+	nhrp_nhs_terminate();
+	nhrp_zebra_terminate();
+	vici_terminate();
+	evmgr_terminate();
+	nhrp_vc_terminate();
+	vrf_terminate();
+
+	debugf(NHRP_DEBUG_COMMON, "Done.");
+	frr_fini();
+
+	exit(0);
+}
+
+static struct frr_signal_t sighandlers[] = {
+	{
+		.signal = SIGUSR1,
+		.handler = &nhrp_sigusr1,
+	},
+	{
+		.signal = SIGINT,
+		.handler = &nhrp_request_stop,
+	},
+	{
+		.signal = SIGTERM,
+		.handler = &nhrp_request_stop,
+	},
+};
+
+static const struct frr_yang_module_info *const nhrpd_yang_modules[] = {
+	&frr_filter_info,
+	&frr_interface_info,
+	&frr_vrf_info,
+};
+
+FRR_DAEMON_INFO(nhrpd, NHRP, .vty_port = NHRP_VTY_PORT,
+
+		.proghelp = "Implementation of the NHRP routing protocol.",
+
+		.signals = sighandlers, .n_signals = array_size(sighandlers),
+
+		.privs = &nhrpd_privs, .yang_modules = nhrpd_yang_modules,
+		.n_yang_modules = array_size(nhrpd_yang_modules),
+);
+
+int main(int argc, char **argv)
+{
+	frr_preinit(&nhrpd_di, argc, argv);
+	frr_opt_add("", longopts, "");
+
+	parse_arguments(argc, argv);
+
+	/* Library inits. */
+	master = frr_init();
+	nhrp_error_init();
+	vrf_init(NULL, NULL, NULL, NULL);
+	nhrp_interface_init();
+	resolver_init(master);
+
+	/*
+	 * Run with elevated capabilities, as for all netlink activity
+	 * we need privileges anyway.
+	 * The assert is for clang SA code where it does
+	 * not see the change function being set in lib
+	 */
+	assert(nhrpd_privs.change);
+	nhrpd_privs.change(ZPRIVS_RAISE);
+
+	evmgr_init();
+	nhrp_vc_init();
+	nhrp_packet_init();
+	vici_init();
+	if_zapi_callbacks(nhrp_ifp_create, nhrp_ifp_up,
+			  nhrp_ifp_down, nhrp_ifp_destroy);
+	nhrp_zebra_init();
+	nhrp_shortcut_init();
+
+	nhrp_config_init();
+
+	frr_config_fork();
+	frr_run(master);
+	return 0;
+}