/*
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* src/nl-monitor.c Monitor events
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
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*/
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#include <netlink/cli/utils.h>
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#include <netlink/cli/link.h>
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static void obj_input(struct nl_object *obj, void *arg)
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{
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struct nl_dump_params dp = {
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.dp_type = NL_DUMP_STATS,
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.dp_fd = stdout,
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.dp_dump_msgtype = 1,
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};
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nl_object_dump(obj, &dp);
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}
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static int event_input(struct nl_msg *msg, void *arg)
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{
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if (nl_msg_parse(msg, &obj_input, NULL) < 0)
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fprintf(stderr, "<<EVENT>> Unknown message type\n");
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/* Exit nl_recvmsgs_def() and return to the main select() */
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return NL_STOP;
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}
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int main(int argc, char *argv[])
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{
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struct nl_sock *sock;
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struct nl_cache *link_cache;
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int err = 1;
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int i, idx;
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static const struct {
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enum rtnetlink_groups gr_id;
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const char* gr_name;
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} known_groups[] = {
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{ RTNLGRP_LINK, "link" },
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{ RTNLGRP_NOTIFY, "notify" },
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{ RTNLGRP_NEIGH, "neigh" },
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{ RTNLGRP_TC, "tc" },
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{ RTNLGRP_IPV4_IFADDR, "ipv4-ifaddr" },
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{ RTNLGRP_IPV4_MROUTE, "ipv4-mroute" },
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{ RTNLGRP_IPV4_ROUTE, "ipv4-route" },
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{ RTNLGRP_IPV6_IFADDR, "ipv6-ifaddr" },
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{ RTNLGRP_IPV6_MROUTE, "ipv6-mroute" },
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{ RTNLGRP_IPV6_ROUTE, "ipv6-route" },
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{ RTNLGRP_IPV6_IFINFO, "ipv6-ifinfo" },
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{ RTNLGRP_DECnet_IFADDR, "decnet-ifaddr" },
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{ RTNLGRP_DECnet_ROUTE, "decnet-route" },
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{ RTNLGRP_IPV6_PREFIX, "ipv6-prefix" },
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{ RTNLGRP_NONE, NULL }
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};
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sock = nl_cli_alloc_socket();
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nl_socket_disable_seq_check(sock);
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nl_socket_modify_cb(sock, NL_CB_VALID, NL_CB_CUSTOM, event_input, NULL);
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if (argc > 1 && !strcasecmp(argv[1], "-h")) {
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printf("Usage: nl-monitor [<groups>]\n");
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printf("Known groups:");
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for (i = 0; known_groups[i].gr_id != RTNLGRP_NONE; i++)
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printf(" %s", known_groups[i].gr_name);
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printf("\n");
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return 2;
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}
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nl_cli_connect(sock, NETLINK_ROUTE);
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for (idx = 1; argc > idx; idx++) {
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for (i = 0; known_groups[i].gr_id != RTNLGRP_NONE; i++) {
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if (!strcmp(argv[idx], known_groups[i].gr_name)) {
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if ((err = nl_socket_add_membership(sock, known_groups[i].gr_id)) < 0) {
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nl_cli_fatal(err, "%s: %s\n", argv[idx],
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nl_geterror(err));
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}
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break;
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}
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}
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if (known_groups[i].gr_id == RTNLGRP_NONE)
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fprintf(stderr, "Warning: Unknown group: %s\n", argv[idx]);
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}
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link_cache = nl_cli_link_alloc_cache(sock);
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while (1) {
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fd_set rfds;
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int fd, retval;
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fd = nl_socket_get_fd(sock);
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FD_ZERO(&rfds);
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FD_SET(fd, &rfds);
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/* wait for an incoming message on the netlink socket */
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retval = select(fd+1, &rfds, NULL, NULL, NULL);
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if (retval) {
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/* FD_ISSET(fd, &rfds) will be true */
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nl_recvmsgs_default(sock);
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}
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}
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return 0;
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}
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