| /* |
| * 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; |
| } |