54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
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/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "common/libs/net/netlink_client.h"
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#include "common/libs/net/network_interface.h"
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#include "common/libs/net/network_interface_manager.h"
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#include <net/if.h>
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#include <cstdio>
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// This command can only rename network interfaces that are *DOWN*
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int main(int argc, char *argv[]) {
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if (argc != 3) {
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fprintf(stderr, "usage: %s [ethA] [ethB]\n", argv[0]);
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return -1;
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}
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const char *const name = argv[1];
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int32_t index = if_nametoindex(name);
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if (index == 0) {
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fprintf(stderr, "%s: invalid interface name '%s'\n", argv[0], name);
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return -2;
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}
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const char *const new_name = argv[2];
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auto factory = cuttlefish::NetlinkClientFactory::Default();
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std::unique_ptr<cuttlefish::NetlinkClient> nl(factory->New(NETLINK_ROUTE));
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std::unique_ptr<cuttlefish::NetworkInterfaceManager> nm(
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cuttlefish::NetworkInterfaceManager::New(factory));
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std::unique_ptr<cuttlefish::NetworkInterface> ni(nm->Open(new_name, name));
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bool res = false;
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if (ni) {
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ni->SetName(new_name);
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res = nm->ApplyChanges(*ni);
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}
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if (!res) {
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fprintf(stderr, "%s: renaming interface '%s' failed\n", argv[0], name);
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return -3;
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}
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return 0;
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}
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