-/*
- * src/nl-monitor.c Monitor events
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation version 2.1
- * of the License.
- *
- * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
- */
-
-#include "utils.h"
-#include <netlink/route/link.h>
-#include <netlink/route/addr.h>
-
-static void obj_input(struct nl_object *obj, void *arg)
-{
- struct nl_dump_params dp = {
- .dp_type = NL_DUMP_STATS,
- .dp_fd = stdout,
- .dp_dump_msgtype = 1,
- };
-
- nl_object_dump(obj, &dp);
-}
-
-static int event_input(struct nl_msg *msg, void *arg)
-{
- if (nl_msg_parse(msg, &obj_input, NULL) < 0)
- fprintf(stderr, "<<EVENT>> Unknown message type\n");
-
- /* Exit nl_recvmsgs_def() and return to the main select() */
- return NL_EXIT;
-}
-
-int main(int argc, char *argv[])
-{
- struct nl_handle *nlh;
- struct nl_cache *link_cache;
- int err = 1;
- int i, idx;
-
- static const struct {
- enum rtnetlink_groups gr_id;
- const char* gr_name;
- } known_groups[] = {
- { RTNLGRP_LINK, "link" },
- { RTNLGRP_NOTIFY, "notify" },
- { RTNLGRP_NEIGH, "neigh" },
- { RTNLGRP_TC, "tc" },
- { RTNLGRP_IPV4_IFADDR, "ipv4-ifaddr" },
- { RTNLGRP_IPV4_MROUTE, "ipv4-mroute" },
- { RTNLGRP_IPV4_ROUTE, "ipv4-route" },
- { RTNLGRP_IPV6_IFADDR, "ipv6-ifaddr" },
- { RTNLGRP_IPV6_MROUTE, "ipv6-mroute" },
- { RTNLGRP_IPV6_ROUTE, "ipv6-route" },
- { RTNLGRP_IPV6_IFINFO, "ipv6-ifinfo" },
- { RTNLGRP_DECnet_IFADDR, "decnet-ifaddr" },
- { RTNLGRP_DECnet_ROUTE, "decnet-route" },
- { RTNLGRP_IPV6_PREFIX, "ipv6-prefix" },
- { RTNLGRP_FIB_MAGIC, "fib-magic" },
- { RTNLGRP_NONE, NULL }
- };
-
- if (nltool_init(argc, argv) < 0)
- return -1;
-
- nlh = nl_handle_alloc_nondefault(nltool_cbset);
- if (nlh == NULL)
- return -1;
-
- nl_disable_sequence_check(nlh);
-
- nl_cb_set(nl_handle_get_cb(nlh), NL_CB_VALID, NL_CB_CUSTOM,
- event_input, NULL);
-
- if (argc > 1 && !strcasecmp(argv[1], "-h")) {
- printf("Usage: nl-monitor [<groups>]\n");
-
- printf("Known groups:");
- for (i = 0; known_groups[i].gr_id != RTNLGRP_NONE; i++)
- printf(" %s", known_groups[i].gr_name);
- printf("\n");
- return 2;
- }
-
- nl_join_groups(nlh, RTMGRP_LINK);
-
- if (nl_connect(nlh, NETLINK_ROUTE) < 0) {
- fprintf(stderr, "%s\n", nl_geterror());
- goto errout;
- }
-
- for (idx = 1; argc > idx; idx++) {
- for (i = 0; known_groups[i].gr_id != RTNLGRP_NONE; i++) {
- if (!strcmp(argv[idx], known_groups[i].gr_name)) {
-
- if (nl_join_group(nlh, known_groups[i].gr_id) < 0) {
- fprintf(stderr, "%s: %s\n", argv[idx], nl_geterror());
- goto errout;
- }
-
- break;
- }
- }
- if (known_groups[i].gr_id == RTNLGRP_NONE)
- fprintf(stderr, "Warning: Unknown group: %s\n", argv[idx]);
- }
-
- if ((link_cache = rtnl_link_alloc_cache(nlh)) == NULL) {
- fprintf(stderr, "%s\n", nl_geterror());
- goto errout_close;
- }
-
- nl_cache_mngt_provide(link_cache);
-
- while (1) {
- fd_set rfds;
- int fd, retval;
-
- fd = nl_handle_get_fd(nlh);
-
- FD_ZERO(&rfds);
- FD_SET(fd, &rfds);
- /* wait for an incoming message on the netlink socket */
- retval = select(fd+1, &rfds, NULL, NULL, NULL);
-
- if (retval) {
- /* FD_ISSET(fd, &rfds) will be true */
- nl_recvmsgs_def(nlh);
- }
- }
-
- nl_cache_free(link_cache);
-errout_close:
- nl_close(nlh);
-errout:
- return err;
-}