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- /*
- * 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) 2003-2009 Thomas Graf <tgraf@suug.ch>
- */
- #include <netlink/cli/utils.h>
- #include <netlink/cli/link.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_STOP;
- }
- int main(int argc, char *argv[])
- {
- struct nl_sock *sock;
- 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_NONE, NULL }
- };
- sock = nl_cli_alloc_socket();
- nl_socket_disable_seq_check(sock);
- nl_socket_modify_cb(sock, 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_cli_connect(sock, NETLINK_ROUTE);
- 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 ((err = nl_socket_add_membership(sock, known_groups[i].gr_id)) < 0) {
- nl_cli_fatal(err, "%s: %s\n", argv[idx],
- nl_geterror(err));
- }
- break;
- }
- }
- if (known_groups[i].gr_id == RTNLGRP_NONE)
- fprintf(stderr, "Warning: Unknown group: %s\n", argv[idx]);
- }
- link_cache = nl_cli_link_alloc_cache(sock);
- while (1) {
- fd_set rfds;
- int fd, retval;
- fd = nl_socket_get_fd(sock);
- 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_default(sock);
- }
- }
- return 0;
- }
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