1*4dc78e53SAndroid Build Coastguard Worker /* SPDX-License-Identifier: LGPL-2.1-only */ 2*4dc78e53SAndroid Build Coastguard Worker /* 3*4dc78e53SAndroid Build Coastguard Worker * Copyright (c) 2003-2009 Thomas Graf <[email protected]> 4*4dc78e53SAndroid Build Coastguard Worker */ 5*4dc78e53SAndroid Build Coastguard Worker 6*4dc78e53SAndroid Build Coastguard Worker #include "nl-default.h" 7*4dc78e53SAndroid Build Coastguard Worker 8*4dc78e53SAndroid Build Coastguard Worker #include <linux/netlink.h> 9*4dc78e53SAndroid Build Coastguard Worker 10*4dc78e53SAndroid Build Coastguard Worker #include <netlink/cli/utils.h> 11*4dc78e53SAndroid Build Coastguard Worker #include <netlink/cli/link.h> 12*4dc78e53SAndroid Build Coastguard Worker print_usage(void)13*4dc78e53SAndroid Build Coastguard Workerstatic void print_usage(void) 14*4dc78e53SAndroid Build Coastguard Worker { 15*4dc78e53SAndroid Build Coastguard Worker printf("Usage: nl-link-ifindex2name <ifindex>\n"); 16*4dc78e53SAndroid Build Coastguard Worker exit(0); 17*4dc78e53SAndroid Build Coastguard Worker } 18*4dc78e53SAndroid Build Coastguard Worker main(int argc,char * argv[])19*4dc78e53SAndroid Build Coastguard Workerint main(int argc, char *argv[]) 20*4dc78e53SAndroid Build Coastguard Worker { 21*4dc78e53SAndroid Build Coastguard Worker struct nl_sock *sock; 22*4dc78e53SAndroid Build Coastguard Worker struct nl_cache *link_cache; 23*4dc78e53SAndroid Build Coastguard Worker char name[IFNAMSIZ]; 24*4dc78e53SAndroid Build Coastguard Worker uint32_t ifindex; 25*4dc78e53SAndroid Build Coastguard Worker 26*4dc78e53SAndroid Build Coastguard Worker if (argc < 2) 27*4dc78e53SAndroid Build Coastguard Worker print_usage(); 28*4dc78e53SAndroid Build Coastguard Worker 29*4dc78e53SAndroid Build Coastguard Worker sock = nl_cli_alloc_socket(); 30*4dc78e53SAndroid Build Coastguard Worker nl_cli_connect(sock, NETLINK_ROUTE); 31*4dc78e53SAndroid Build Coastguard Worker link_cache = nl_cli_link_alloc_cache(sock); 32*4dc78e53SAndroid Build Coastguard Worker 33*4dc78e53SAndroid Build Coastguard Worker ifindex = nl_cli_parse_u32(argv[1]); 34*4dc78e53SAndroid Build Coastguard Worker 35*4dc78e53SAndroid Build Coastguard Worker if (!rtnl_link_i2name(link_cache, ifindex, name, sizeof(name))) 36*4dc78e53SAndroid Build Coastguard Worker nl_cli_fatal(ENOENT, "Interface index %d does not exist", 37*4dc78e53SAndroid Build Coastguard Worker ifindex); 38*4dc78e53SAndroid Build Coastguard Worker 39*4dc78e53SAndroid Build Coastguard Worker printf("%s\n", name); 40*4dc78e53SAndroid Build Coastguard Worker 41*4dc78e53SAndroid Build Coastguard Worker return 0; 42*4dc78e53SAndroid Build Coastguard Worker } 43