1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "common/libs/net/netlink_client.h" 18 #include "common/libs/net/network_interface.h" 19 #include "common/libs/net/network_interface_manager.h" 20 21 #include <net/if.h> 22 #include <cstdio> 23 24 // This command can only rename network interfaces that are *DOWN* 25 26 int main(int argc, char *argv[]) { 27 if (argc != 3) { 28 fprintf(stderr, "usage: %s [ethA] [ethB]\n", argv[0]); 29 return -1; 30 } 31 const char *const name = argv[1]; 32 int32_t index = if_nametoindex(name); 33 if (index == 0) { 34 fprintf(stderr, "%s: invalid interface name '%s'\n", argv[0], name); 35 return -2; 36 } 37 const char *const new_name = argv[2]; 38 auto factory = cvd::NetlinkClientFactory::Default(); 39 std::unique_ptr<cvd::NetlinkClient> nl(factory->New(NETLINK_ROUTE)); 40 std::unique_ptr<cvd::NetworkInterfaceManager> nm( 41 cvd::NetworkInterfaceManager::New(factory)); 42 std::unique_ptr<cvd::NetworkInterface> ni(nm->Open(new_name, name)); 43 bool res = false; 44 if (ni) { 45 ni->SetName(new_name); 46 res = nm->ApplyChanges(*ni); 47 } 48 if (!res) { 49 fprintf(stderr, "%s: renaming interface '%s' failed\n", argv[0], name); 50 return -3; 51 } 52 return 0; 53 } 54
