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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;
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]);
}
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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