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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "CanBusVirtual.h"
#include <android-base/logging.h>
#include <libnetdevice/libnetdevice.h>
namespace android::hardware::automotive::can::V1_0::implementation {
CanBusVirtual::CanBusVirtual(const std::string& ifname) : CanBus(ifname) {}
ICanController::Result CanBusVirtual::preUp() {
if (netdevice::exists(mIfname)) return ICanController::Result::OK;
LOG(DEBUG) << "Virtual interface " << mIfname << " doesn't exist, creating...";
mWasCreated = true;
if (!netdevice::add(mIfname, "vcan")) {
LOG(ERROR) << "Can't create vcan interface " << mIfname;
return ICanController::Result::UNKNOWN_ERROR;
}
return ICanController::Result::OK;
}
bool CanBusVirtual::postDown() {
if (mWasCreated) {
mWasCreated = false;
if (!netdevice::del(mIfname)) {
LOG(ERROR) << "Couldn't remove vcan interface " << mIfname;
return false;
}
}
return true;
}
} // namespace android::hardware::automotive::can::V1_0::implementation
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