/*
|
* src/nl-link-name2ifindex.c Transform a interface name to its index
|
*
|
* 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) 2003-2008 Thomas Graf <tgraf@suug.ch>
|
*/
|
|
#include <netlink/cli/utils.h>
|
#include <netlink/cli/link.h>
|
|
static void print_usage(void)
|
{
|
printf("Usage: nl-link-name2ifindex <name>\n");
|
exit(0);
|
}
|
|
int main(int argc, char *argv[])
|
{
|
struct nl_sock *sock;
|
struct nl_cache *link_cache;
|
uint32_t ifindex;
|
|
if (argc < 2)
|
print_usage();
|
|
sock = nl_cli_alloc_socket();
|
nl_cli_connect(sock, NETLINK_ROUTE);
|
link_cache = nl_cli_link_alloc_cache(sock);
|
|
if (!(ifindex = rtnl_link_name2i(link_cache, argv[1])))
|
nl_cli_fatal(ENOENT, "Interface \"%s\" does not exist",
|
argv[1]);
|
|
printf("%u\n", ifindex);
|
|
return 0;
|
}
|
