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  • Committer: Bazaar Package Importer
  • Author(s): Heiko Stuebner
  • Date: 2011-05-21 19:25:13 UTC
  • Revision ID: james.westby@ubuntu.com-20110521192513-1ieyu9w9kym4bt16
Tags: upstream-3.0
Import upstream version 3.0

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src/nl-monitor.c
 
1
/*
 
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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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}