[mirror_iproute2.git] / ip / ipmonitor.c

/*
 * ipmonitor.c		"ip monitor".
 *
 *		This program is free software; you can redistribute it 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.
 *
 * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <syslog.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <time.h>

#include "utils.h"
#include "ip_common.h"

static void usage(void) __attribute__((noreturn));
int prefix_banner;
int listen_all_nsid;

static void usage(void)
{
	fprintf(stderr, "Usage: ip monitor [ all | LISTofOBJECTS ] [ FILE ] [ label ] [all-nsid] [dev DEVICE]\n");
	fprintf(stderr, "LISTofOBJECTS := link | address | route | mroute | prefix |\n");
	fprintf(stderr, "                 neigh | netconf | rule | nsid\n");
	fprintf(stderr, "FILE := file FILENAME\n");
	exit(-1);
}

static void print_headers(FILE *fp, char *label, struct rtnl_ctrl_data *ctrl)
{
	if (timestamp)
		print_timestamp(fp);

	if (listen_all_nsid) {
		if (ctrl == NULL || ctrl->nsid < 0)
			fprintf(fp, "[nsid current]");
		else
			fprintf(fp, "[nsid %d]", ctrl->nsid);
	}

	if (prefix_banner)
		fprintf(fp, "%s", label);
}

static int accept_msg(const struct sockaddr_nl *who,
		      struct rtnl_ctrl_data *ctrl,
		      struct nlmsghdr *n, void *arg)
{
	FILE *fp = (FILE *)arg;

	if (n->nlmsg_type == RTM_NEWROUTE || n->nlmsg_type == RTM_DELROUTE) {
		struct rtmsg *r = NLMSG_DATA(n);
		int len = n->nlmsg_len - NLMSG_LENGTH(sizeof(*r));

		if (len < 0) {
			fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
			return -1;
		}

		if (r->rtm_flags & RTM_F_CLONED)
			return 0;

		if (r->rtm_family == RTNL_FAMILY_IPMR ||
		    r->rtm_family == RTNL_FAMILY_IP6MR) {
			print_headers(fp, "[MROUTE]", ctrl);
			print_mroute(who, n, arg);
			return 0;
		} else {
			print_headers(fp, "[ROUTE]", ctrl);
			print_route(who, n, arg);
			return 0;
		}
	}

	if (n->nlmsg_type == RTM_NEWLINK || n->nlmsg_type == RTM_DELLINK) {
		ll_remember_index(who, n, NULL);
		print_headers(fp, "[LINK]", ctrl);
		print_linkinfo(who, n, arg);
		return 0;
	}
	if (n->nlmsg_type == RTM_NEWADDR || n->nlmsg_type == RTM_DELADDR) {
		print_headers(fp, "[ADDR]", ctrl);
		print_addrinfo(who, n, arg);
		return 0;
	}
	if (n->nlmsg_type == RTM_NEWADDRLABEL || n->nlmsg_type == RTM_DELADDRLABEL) {
		print_headers(fp, "[ADDRLABEL]", ctrl);
		print_addrlabel(who, n, arg);
		return 0;
	}
	if (n->nlmsg_type == RTM_NEWNEIGH || n->nlmsg_type == RTM_DELNEIGH ||
	    n->nlmsg_type == RTM_GETNEIGH) {
		if (preferred_family) {
			struct ndmsg *r = NLMSG_DATA(n);

			if (r->ndm_family != preferred_family)
				return 0;
		}

		print_headers(fp, "[NEIGH]", ctrl);
		print_neigh(who, n, arg);
		return 0;
	}
	if (n->nlmsg_type == RTM_NEWPREFIX) {
		print_headers(fp, "[PREFIX]", ctrl);
		print_prefix(who, n, arg);
		return 0;
	}
	if (n->nlmsg_type == RTM_NEWRULE || n->nlmsg_type == RTM_DELRULE) {
		print_headers(fp, "[RULE]", ctrl);
		print_rule(who, n, arg);
		return 0;
	}
	if (n->nlmsg_type == RTM_NEWNETCONF) {
		print_headers(fp, "[NETCONF]", ctrl);
		print_netconf(who, ctrl, n, arg);
		return 0;
	}
	if (n->nlmsg_type == NLMSG_TSTAMP) {
		print_nlmsg_timestamp(fp, n);
		return 0;
	}
	if (n->nlmsg_type == RTM_NEWNSID || n->nlmsg_type == RTM_DELNSID) {
		print_headers(fp, "[NSID]", ctrl);
		print_nsid(who, n, arg);
		return 0;
	}
	if (n->nlmsg_type != NLMSG_ERROR && n->nlmsg_type != NLMSG_NOOP &&
	    n->nlmsg_type != NLMSG_DONE) {
		fprintf(fp, "Unknown message: type=0x%08x(%d) flags=0x%08x(%d)len=0x%08x(%d)\n",
			n->nlmsg_type, n->nlmsg_type,
			n->nlmsg_flags, n->nlmsg_flags, n->nlmsg_len,
			n->nlmsg_len);
	}
	return 0;
}

int do_ipmonitor(int argc, char **argv)
{
	char *file = NULL;
	unsigned int groups = 0;
	int llink = 0;
	int laddr = 0;
	int lroute = 0;
	int lmroute = 0;
	int lprefix = 0;
	int lneigh = 0;
	int lnetconf = 0;
	int lrule = 0;
	int lnsid = 0;
	int ifindex = 0;

	groups |= nl_mgrp(RTNLGRP_LINK);
	groups |= nl_mgrp(RTNLGRP_IPV4_IFADDR);
	groups |= nl_mgrp(RTNLGRP_IPV6_IFADDR);
	groups |= nl_mgrp(RTNLGRP_IPV4_ROUTE);
	groups |= nl_mgrp(RTNLGRP_IPV6_ROUTE);
	groups |= nl_mgrp(RTNLGRP_MPLS_ROUTE);
	groups |= nl_mgrp(RTNLGRP_IPV4_MROUTE);
	groups |= nl_mgrp(RTNLGRP_IPV6_MROUTE);
	groups |= nl_mgrp(RTNLGRP_IPV6_PREFIX);
	groups |= nl_mgrp(RTNLGRP_NEIGH);
	groups |= nl_mgrp(RTNLGRP_IPV4_NETCONF);
	groups |= nl_mgrp(RTNLGRP_IPV6_NETCONF);
	groups |= nl_mgrp(RTNLGRP_IPV4_RULE);
	groups |= nl_mgrp(RTNLGRP_IPV6_RULE);
	groups |= nl_mgrp(RTNLGRP_NSID);

	rtnl_close(&rth);

	while (argc > 0) {
		if (matches(*argv, "file") == 0) {
			NEXT_ARG();
			file = *argv;
		} else if (matches(*argv, "label") == 0) {
			prefix_banner = 1;
		} else if (matches(*argv, "link") == 0) {
			llink = 1;
			groups = 0;
		} else if (matches(*argv, "address") == 0) {
			laddr = 1;
			groups = 0;
		} else if (matches(*argv, "route") == 0) {
			lroute = 1;
			groups = 0;
		} else if (matches(*argv, "mroute") == 0) {
			lmroute = 1;
			groups = 0;
		} else if (matches(*argv, "prefix") == 0) {
			lprefix = 1;
			groups = 0;
		} else if (matches(*argv, "neigh") == 0) {
			lneigh = 1;
			groups = 0;
		} else if (matches(*argv, "netconf") == 0) {
			lnetconf = 1;
			groups = 0;
		} else if (matches(*argv, "rule") == 0) {
			lrule = 1;
			groups = 0;
		} else if (matches(*argv, "nsid") == 0) {
			lnsid = 1;
			groups = 0;
		} else if (strcmp(*argv, "all") == 0) {
			prefix_banner = 1;
		} else if (matches(*argv, "all-nsid") == 0) {
			listen_all_nsid = 1;
		} else if (matches(*argv, "help") == 0) {
			usage();
		} else if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();

			ifindex = ll_name_to_index(*argv);
			if (!ifindex)
				invarg("Device does not exist\n", *argv);
		} else {
			fprintf(stderr, "Argument \"%s\" is unknown, try \"ip monitor help\".\n", *argv);
			exit(-1);
		}
		argc--;	argv++;
	}

	ipaddr_reset_filter(1, ifindex);
	iproute_reset_filter(ifindex);
	ipmroute_reset_filter(ifindex);
	ipneigh_reset_filter(ifindex);
	ipnetconf_reset_filter(ifindex);

	if (llink)
		groups |= nl_mgrp(RTNLGRP_LINK);
	if (laddr) {
		if (!preferred_family || preferred_family == AF_INET)
			groups |= nl_mgrp(RTNLGRP_IPV4_IFADDR);
		if (!preferred_family || preferred_family == AF_INET6)
			groups |= nl_mgrp(RTNLGRP_IPV6_IFADDR);
	}
	if (lroute) {
		if (!preferred_family || preferred_family == AF_INET)
			groups |= nl_mgrp(RTNLGRP_IPV4_ROUTE);
		if (!preferred_family || preferred_family == AF_INET6)
			groups |= nl_mgrp(RTNLGRP_IPV6_ROUTE);
		if (!preferred_family || preferred_family == AF_MPLS)
			groups |= nl_mgrp(RTNLGRP_MPLS_ROUTE);
	}
	if (lmroute) {
		if (!preferred_family || preferred_family == AF_INET)
			groups |= nl_mgrp(RTNLGRP_IPV4_MROUTE);
		if (!preferred_family || preferred_family == AF_INET6)
			groups |= nl_mgrp(RTNLGRP_IPV6_MROUTE);
	}
	if (lprefix) {
		if (!preferred_family || preferred_family == AF_INET6)
			groups |= nl_mgrp(RTNLGRP_IPV6_PREFIX);
	}
	if (lneigh) {
		groups |= nl_mgrp(RTNLGRP_NEIGH);
	}
	if (lnetconf) {
		if (!preferred_family || preferred_family == AF_INET)
			groups |= nl_mgrp(RTNLGRP_IPV4_NETCONF);
		if (!preferred_family || preferred_family == AF_INET6)
			groups |= nl_mgrp(RTNLGRP_IPV6_NETCONF);
	}
	if (lrule) {
		if (!preferred_family || preferred_family == AF_INET)
			groups |= nl_mgrp(RTNLGRP_IPV4_RULE);
		if (!preferred_family || preferred_family == AF_INET6)
			groups |= nl_mgrp(RTNLGRP_IPV6_RULE);
	}
	if (lnsid) {
		groups |= nl_mgrp(RTNLGRP_NSID);
	}
	if (file) {
		FILE *fp;
		int err;

		fp = fopen(file, "r");
		if (fp == NULL) {
			perror("Cannot fopen");
			exit(-1);
		}
		err = rtnl_from_file(fp, accept_msg, stdout);
		fclose(fp);
		return err;
	}

	if (rtnl_open(&rth, groups) < 0)
		exit(1);
	if (listen_all_nsid && rtnl_listen_all_nsid(&rth) < 0)
		exit(1);

	ll_init_map(&rth);
	netns_map_init();

	if (rtnl_listen(&rth, accept_msg, stdout) < 0)
		exit(2);

	return 0;
}
Commit	Line	Data
aba5acdf SH	1	/*
	2	* ipmonitor.c "ip monitor".
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version
	7	* 2 of the License, or (at your option) any later version.
	8	*
	9	* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
	10	*
	11	*/
	12
	13	#include <stdio.h>
	14	#include <stdlib.h>
	15	#include <unistd.h>
	16	#include <syslog.h>
	17	#include <fcntl.h>
	18	#include <sys/socket.h>
	19	#include <netinet/in.h>
	20	#include <arpa/inet.h>
	21	#include <string.h>
	22	#include <time.h>
	23
	24	#include "utils.h"
	25	#include "ip_common.h"
	26
	27	static void usage(void) __attribute__((noreturn));
4b6e07d8	28	int prefix_banner;
449b824a	29	int listen_all_nsid;
aba5acdf SH	30
	31	static void usage(void)
	32	{
56f5daac	33	fprintf(stderr, "Usage: ip monitor [ all \| LISTofOBJECTS ] [ FILE ] [ label ] [all-nsid] [dev DEVICE]\n");
cbe195dc	34	fprintf(stderr, "LISTofOBJECTS := link \| address \| route \| mroute \| prefix \|\n");
d652ccbf	35	fprintf(stderr, " neigh \| netconf \| rule \| nsid\n");
cbe195dc	36	fprintf(stderr, "FILE := file FILENAME\n");
aba5acdf SH	37	exit(-1);
	38	}
	39
449b824a	40	static void print_headers(FILE fp, char label, struct rtnl_ctrl_data *ctrl)
3b0006f8 ND	41	{
	42	if (timestamp)
	43	print_timestamp(fp);
	44
449b824a ND	45	if (listen_all_nsid) {
	46	if (ctrl == NULL \|\| ctrl->nsid < 0)
	47	fprintf(fp, "[nsid current]");
	48	else
	49	fprintf(fp, "[nsid %d]", ctrl->nsid);
	50	}
	51
3b0006f8 ND	52	if (prefix_banner)
	53	fprintf(fp, "%s", label);
	54	}
	55
d1f28cf1	56	static int accept_msg(const struct sockaddr_nl *who,
0628cddd	57	struct rtnl_ctrl_data *ctrl,
d1f28cf1	58	struct nlmsghdr n, void arg)
aba5acdf	59	{
56f5daac	60	FILE fp = (FILE )arg;
aba5acdf SH	61
aba5acdf SH	62	if (n->nlmsg_type == RTM_NEWROUTE \|\| n->nlmsg_type == RTM_DELROUTE) {
e34d3dcc ND	63	struct rtmsg *r = NLMSG_DATA(n);
	64	int len = n->nlmsg_len - NLMSG_LENGTH(sizeof(*r));
	65
	66	if (len < 0) {
	67	fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
	68	return -1;
	69	}
	70
2271779d	71	if (r->rtm_flags & RTM_F_CLONED)
	72	return 0;
	73
e34d3dcc ND	74	if (r->rtm_family == RTNL_FAMILY_IPMR \|\|
e34d3dcc ND	75	r->rtm_family == RTNL_FAMILY_IP6MR) {
449b824a	76	print_headers(fp, "[MROUTE]", ctrl);
e34d3dcc ND	77	print_mroute(who, n, arg);
	78	return 0;
	79	} else {
449b824a	80	print_headers(fp, "[ROUTE]", ctrl);
e34d3dcc ND	81	print_route(who, n, arg);
	82	return 0;
	83	}
aba5acdf	84	}
2271779d	85
aba5acdf SH	86	if (n->nlmsg_type == RTM_NEWLINK \|\| n->nlmsg_type == RTM_DELLINK) {
aba5acdf SH	87	ll_remember_index(who, n, NULL);
449b824a	88	print_headers(fp, "[LINK]", ctrl);
aba5acdf SH	89	print_linkinfo(who, n, arg);
	90	return 0;
	91	}
	92	if (n->nlmsg_type == RTM_NEWADDR \|\| n->nlmsg_type == RTM_DELADDR) {
449b824a	93	print_headers(fp, "[ADDR]", ctrl);
aba5acdf SH	94	print_addrinfo(who, n, arg);
	95	return 0;
	96	}
4759758c	97	if (n->nlmsg_type == RTM_NEWADDRLABEL \|\| n->nlmsg_type == RTM_DELADDRLABEL) {
449b824a	98	print_headers(fp, "[ADDRLABEL]", ctrl);
4759758c YH	99	print_addrlabel(who, n, arg);
	100	return 0;
	101	}
1556e29d DS	102	if (n->nlmsg_type == RTM_NEWNEIGH \|\| n->nlmsg_type == RTM_DELNEIGH \|\|
1556e29d DS	103	n->nlmsg_type == RTM_GETNEIGH) {
00185653 SH	104	if (preferred_family) {
	105	struct ndmsg *r = NLMSG_DATA(n);
	106
	107	if (r->ndm_family != preferred_family)
	108	return 0;
	109	}
	110
449b824a	111	print_headers(fp, "[NEIGH]", ctrl);
aba5acdf SH	112	print_neigh(who, n, arg);
	113	return 0;
	114	}
1cb54e58	115	if (n->nlmsg_type == RTM_NEWPREFIX) {
449b824a	116	print_headers(fp, "[PREFIX]", ctrl);
1cb54e58	117	print_prefix(who, n, arg);
	118	return 0;
	119	}
98bde989	120	if (n->nlmsg_type == RTM_NEWRULE \|\| n->nlmsg_type == RTM_DELRULE) {
449b824a	121	print_headers(fp, "[RULE]", ctrl);
98bde989 TG	122	print_rule(who, n, arg);
	123	return 0;
	124	}
9d0efc10	125	if (n->nlmsg_type == RTM_NEWNETCONF) {
449b824a	126	print_headers(fp, "[NETCONF]", ctrl);
0628cddd	127	print_netconf(who, ctrl, n, arg);
9d0efc10 ND	128	return 0;
9d0efc10 ND	129	}
27b14f2e	130	if (n->nlmsg_type == NLMSG_TSTAMP) {
ddb1129b	131	print_nlmsg_timestamp(fp, n);
aba5acdf SH	132	return 0;
aba5acdf SH	133	}
d652ccbf	134	if (n->nlmsg_type == RTM_NEWNSID \|\| n->nlmsg_type == RTM_DELNSID) {
449b824a	135	print_headers(fp, "[NSID]", ctrl);
d652ccbf ND	136	print_nsid(who, n, arg);
	137	return 0;
	138	}
aba5acdf SH	139	if (n->nlmsg_type != NLMSG_ERROR && n->nlmsg_type != NLMSG_NOOP &&
aba5acdf SH	140	n->nlmsg_type != NLMSG_DONE) {
56f5daac SH	141	fprintf(fp, "Unknown message: type=0x%08x(%d) flags=0x%08x(%d)len=0x%08x(%d)\n",
56f5daac SH	142	n->nlmsg_type, n->nlmsg_type,
40aadf8b	143	n->nlmsg_flags, n->nlmsg_flags, n->nlmsg_len,
40aadf8b	144	n->nlmsg_len);
aba5acdf SH	145	}
	146	return 0;
	147	}
	148
	149	int do_ipmonitor(int argc, char **argv)
	150	{
aba5acdf	151	char *file = NULL;
56f5daac SH	152	unsigned int groups = 0;
	153	int llink = 0;
	154	int laddr = 0;
	155	int lroute = 0;
	156	int lmroute = 0;
	157	int lprefix = 0;
	158	int lneigh = 0;
	159	int lnetconf = 0;
	160	int lrule = 0;
	161	int lnsid = 0;
	162	int ifindex = 0;
aba5acdf	163
6fcabac5	164	groups \|= nl_mgrp(RTNLGRP_LINK);
	165	groups \|= nl_mgrp(RTNLGRP_IPV4_IFADDR);
	166	groups \|= nl_mgrp(RTNLGRP_IPV6_IFADDR);
	167	groups \|= nl_mgrp(RTNLGRP_IPV4_ROUTE);
	168	groups \|= nl_mgrp(RTNLGRP_IPV6_ROUTE);
dacc5d41	169	groups \|= nl_mgrp(RTNLGRP_MPLS_ROUTE);
6fcabac5	170	groups \|= nl_mgrp(RTNLGRP_IPV4_MROUTE);
	171	groups \|= nl_mgrp(RTNLGRP_IPV6_MROUTE);
	172	groups \|= nl_mgrp(RTNLGRP_IPV6_PREFIX);
	173	groups \|= nl_mgrp(RTNLGRP_NEIGH);
	174	groups \|= nl_mgrp(RTNLGRP_IPV4_NETCONF);
	175	groups \|= nl_mgrp(RTNLGRP_IPV6_NETCONF);
2dd5909d ND	176	groups \|= nl_mgrp(RTNLGRP_IPV4_RULE);
2dd5909d ND	177	groups \|= nl_mgrp(RTNLGRP_IPV6_RULE);
d652ccbf	178	groups \|= nl_mgrp(RTNLGRP_NSID);
6fcabac5	179
fc57a9df	180	rtnl_close(&rth);
aba5acdf SH	181
	182	while (argc > 0) {
	183	if (matches(*argv, "file") == 0) {
	184	NEXT_ARG();
	185	file = *argv;
488c41d2 MS	186	} else if (matches(*argv, "label") == 0) {
488c41d2 MS	187	prefix_banner = 1;
aba5acdf	188	} else if (matches(*argv, "link") == 0) {
56f5daac	189	llink = 1;
aba5acdf SH	190	groups = 0;
aba5acdf SH	191	} else if (matches(*argv, "address") == 0) {
56f5daac	192	laddr = 1;
aba5acdf SH	193	groups = 0;
aba5acdf SH	194	} else if (matches(*argv, "route") == 0) {
56f5daac	195	lroute = 1;
aba5acdf	196	groups = 0;
e34d3dcc	197	} else if (matches(*argv, "mroute") == 0) {
56f5daac	198	lmroute = 1;
e34d3dcc	199	groups = 0;
1cb54e58	200	} else if (matches(*argv, "prefix") == 0) {
56f5daac	201	lprefix = 1;
1cb54e58	202	groups = 0;
fb063322	203	} else if (matches(*argv, "neigh") == 0) {
6cdbf370 AH	204	lneigh = 1;
6cdbf370 AH	205	groups = 0;
9d0efc10 ND	206	} else if (matches(*argv, "netconf") == 0) {
	207	lnetconf = 1;
	208	groups = 0;
2dd5909d ND	209	} else if (matches(*argv, "rule") == 0) {
	210	lrule = 1;
	211	groups = 0;
d652ccbf ND	212	} else if (matches(*argv, "nsid") == 0) {
	213	lnsid = 1;
	214	groups = 0;
aba5acdf	215	} else if (strcmp(*argv, "all") == 0) {
56f5daac	216	prefix_banner = 1;
a9390c92 RP	217	} else if (matches(*argv, "all-nsid") == 0) {
a9390c92 RP	218	listen_all_nsid = 1;
aba5acdf SH	219	} else if (matches(*argv, "help") == 0) {
aba5acdf SH	220	usage();
093b7646	221	} else if (strcmp(*argv, "dev") == 0) {
	222	NEXT_ARG();
	223
	224	ifindex = ll_name_to_index(*argv);
	225	if (!ifindex)
	226	invarg("Device does not exist\n", *argv);
aba5acdf SH	227	} else {
	228	fprintf(stderr, "Argument \"%s\" is unknown, try \"ip monitor help\".\n", *argv);
	229	exit(-1);
	230	}
	231	argc--; argv++;
	232	}
	233
093b7646	234	ipaddr_reset_filter(1, ifindex);
	235	iproute_reset_filter(ifindex);
	236	ipmroute_reset_filter(ifindex);
	237	ipneigh_reset_filter(ifindex);
	238	ipnetconf_reset_filter(ifindex);
	239
aba5acdf	240	if (llink)
b64f58b0	241	groups \|= nl_mgrp(RTNLGRP_LINK);
aba5acdf SH	242	if (laddr) {
aba5acdf SH	243	if (!preferred_family \|\| preferred_family == AF_INET)
b64f58b0	244	groups \|= nl_mgrp(RTNLGRP_IPV4_IFADDR);
aba5acdf	245	if (!preferred_family \|\| preferred_family == AF_INET6)
b64f58b0	246	groups \|= nl_mgrp(RTNLGRP_IPV6_IFADDR);
aba5acdf SH	247	}
	248	if (lroute) {
	249	if (!preferred_family \|\| preferred_family == AF_INET)
b64f58b0	250	groups \|= nl_mgrp(RTNLGRP_IPV4_ROUTE);
aba5acdf	251	if (!preferred_family \|\| preferred_family == AF_INET6)
b64f58b0	252	groups \|= nl_mgrp(RTNLGRP_IPV6_ROUTE);
dacc5d41 EB	253	if (!preferred_family \|\| preferred_family == AF_MPLS)
dacc5d41 EB	254	groups \|= nl_mgrp(RTNLGRP_MPLS_ROUTE);
aba5acdf	255	}
e34d3dcc ND	256	if (lmroute) {
	257	if (!preferred_family \|\| preferred_family == AF_INET)
	258	groups \|= nl_mgrp(RTNLGRP_IPV4_MROUTE);
	259	if (!preferred_family \|\| preferred_family == AF_INET6)
	260	groups \|= nl_mgrp(RTNLGRP_IPV6_MROUTE);
	261	}
1cb54e58	262	if (lprefix) {
1cb54e58	263	if (!preferred_family \|\| preferred_family == AF_INET6)
b64f58b0	264	groups \|= nl_mgrp(RTNLGRP_IPV6_PREFIX);
1cb54e58	265	}
fb063322 VC	266	if (lneigh) {
	267	groups \|= nl_mgrp(RTNLGRP_NEIGH);
	268	}
9d0efc10 ND	269	if (lnetconf) {
	270	if (!preferred_family \|\| preferred_family == AF_INET)
	271	groups \|= nl_mgrp(RTNLGRP_IPV4_NETCONF);
	272	if (!preferred_family \|\| preferred_family == AF_INET6)
	273	groups \|= nl_mgrp(RTNLGRP_IPV6_NETCONF);
	274	}
2dd5909d ND	275	if (lrule) {
	276	if (!preferred_family \|\| preferred_family == AF_INET)
	277	groups \|= nl_mgrp(RTNLGRP_IPV4_RULE);
	278	if (!preferred_family \|\| preferred_family == AF_INET6)
	279	groups \|= nl_mgrp(RTNLGRP_IPV6_RULE);
	280	}
d652ccbf ND	281	if (lnsid) {
	282	groups \|= nl_mgrp(RTNLGRP_NSID);
	283	}
aba5acdf SH	284	if (file) {
aba5acdf SH	285	FILE *fp;
e49b51d6 SH	286	int err;
e49b51d6 SH	287
aba5acdf SH	288	fp = fopen(file, "r");
	289	if (fp == NULL) {
	290	perror("Cannot fopen");
	291	exit(-1);
	292	}
e49b51d6 SH	293	err = rtnl_from_file(fp, accept_msg, stdout);
	294	fclose(fp);
	295	return err;
aba5acdf SH	296	}
aba5acdf SH	297
fc57a9df SH	298	if (rtnl_open(&rth, groups) < 0)
fc57a9df SH	299	exit(1);
449b824a ND	300	if (listen_all_nsid && rtnl_listen_all_nsid(&rth) < 0)
	301	exit(1);
	302
aba5acdf	303	ll_init_map(&rth);
d652ccbf	304	netns_map_init();
aba5acdf	305
fc57a9df	306	if (rtnl_listen(&rth, accept_msg, stdout) < 0)
aba5acdf SH	307	exit(2);
aba5acdf SH	308
351efcde	309	return 0;
aba5acdf	310	}