1*4d7e907cSAndroid Build Coastguard Worker /* 2*4d7e907cSAndroid Build Coastguard Worker * Copyright 2022, The Android Open Source Project 3*4d7e907cSAndroid Build Coastguard Worker * 4*4d7e907cSAndroid Build Coastguard Worker * Licensed under the Apache License, Version 2.0 (the "License"); 5*4d7e907cSAndroid Build Coastguard Worker * you may not use this file except in compliance with the License. 6*4d7e907cSAndroid Build Coastguard Worker * You may obtain a copy of the License at 7*4d7e907cSAndroid Build Coastguard Worker * 8*4d7e907cSAndroid Build Coastguard Worker * http://www.apache.org/licenses/LICENSE-2.0 9*4d7e907cSAndroid Build Coastguard Worker * 10*4d7e907cSAndroid Build Coastguard Worker * Unless required by applicable law or agreed to in writing, software 11*4d7e907cSAndroid Build Coastguard Worker * distributed under the License is distributed on an "AS IS" BASIS, 12*4d7e907cSAndroid Build Coastguard Worker * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13*4d7e907cSAndroid Build Coastguard Worker * See the License for the specific language governing permissions and 14*4d7e907cSAndroid Build Coastguard Worker * limitations under the License. 15*4d7e907cSAndroid Build Coastguard Worker */ 16*4d7e907cSAndroid Build Coastguard Worker 17*4d7e907cSAndroid Build Coastguard Worker #include "CanBusVirtual.h" 18*4d7e907cSAndroid Build Coastguard Worker 19*4d7e907cSAndroid Build Coastguard Worker #include <android-base/logging.h> 20*4d7e907cSAndroid Build Coastguard Worker #include <libnetdevice/libnetdevice.h> 21*4d7e907cSAndroid Build Coastguard Worker 22*4d7e907cSAndroid Build Coastguard Worker namespace aidl::android::hardware::automotive::can { 23*4d7e907cSAndroid Build Coastguard Worker 24*4d7e907cSAndroid Build Coastguard Worker using namespace ::android; 25*4d7e907cSAndroid Build Coastguard Worker CanBusVirtual(const std::string & ifname)26*4d7e907cSAndroid Build Coastguard WorkerCanBusVirtual::CanBusVirtual(const std::string& ifname) : CanBus(ifname) {} 27*4d7e907cSAndroid Build Coastguard Worker preUp()28*4d7e907cSAndroid Build Coastguard WorkerResult CanBusVirtual::preUp() { 29*4d7e907cSAndroid Build Coastguard Worker if (netdevice::exists(mIfname)) return Result::OK; 30*4d7e907cSAndroid Build Coastguard Worker 31*4d7e907cSAndroid Build Coastguard Worker LOG(DEBUG) << "Virtual interface " << mIfname << " doesn't exist, creating..."; 32*4d7e907cSAndroid Build Coastguard Worker mWasCreated = true; 33*4d7e907cSAndroid Build Coastguard Worker if (!netdevice::add(mIfname, "vcan")) { 34*4d7e907cSAndroid Build Coastguard Worker LOG(ERROR) << "Can't create vcan interface " << mIfname; 35*4d7e907cSAndroid Build Coastguard Worker return Result::UNKNOWN_ERROR; 36*4d7e907cSAndroid Build Coastguard Worker } 37*4d7e907cSAndroid Build Coastguard Worker 38*4d7e907cSAndroid Build Coastguard Worker return Result::OK; 39*4d7e907cSAndroid Build Coastguard Worker } 40*4d7e907cSAndroid Build Coastguard Worker postDown()41*4d7e907cSAndroid Build Coastguard Workerbool CanBusVirtual::postDown() { 42*4d7e907cSAndroid Build Coastguard Worker if (mWasCreated) { 43*4d7e907cSAndroid Build Coastguard Worker mWasCreated = false; 44*4d7e907cSAndroid Build Coastguard Worker if (!netdevice::del(mIfname)) { 45*4d7e907cSAndroid Build Coastguard Worker LOG(ERROR) << "Couldn't remove vcan interface " << mIfname; 46*4d7e907cSAndroid Build Coastguard Worker return false; 47*4d7e907cSAndroid Build Coastguard Worker } 48*4d7e907cSAndroid Build Coastguard Worker } 49*4d7e907cSAndroid Build Coastguard Worker return true; 50*4d7e907cSAndroid Build Coastguard Worker } 51*4d7e907cSAndroid Build Coastguard Worker 52*4d7e907cSAndroid Build Coastguard Worker } // namespace aidl::android::hardware::automotive::can 53