56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
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/*
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* Copyright (C) 2019 The LineageOS 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 <fstream>
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#include "UsbRestrict.h"
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#include <android-base/logging.h>
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namespace vendor {
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namespace lineage {
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namespace trust {
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namespace V1_0 {
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namespace implementation {
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static constexpr const char* kControlPath = "/sys/class/power_supply/usb/otg_switch";
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// Methods from ::vendor::lineage::trust::V1_0::IUsbRestrict follow.
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Return<bool> UsbRestrict::isEnabled() {
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std::ifstream file(kControlPath);
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std::string content;
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file >> content;
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file.close();
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return !file.fail() && !std::stoi(content);
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}
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Return<void> UsbRestrict::setEnabled(bool enabled) {
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std::ofstream file(kControlPath);
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if (file.is_open()) {
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file << (!enabled ? "1" : "0");
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file.close();
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} else {
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LOG(ERROR) << "Failed to open " << kControlPath << ", error=" << errno << " ("
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<< strerror(errno) << ")";
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}
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return Void();
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}
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} // namespace implementation
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} // namespace V1_0
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} // namespace trust
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} // namespace lineage
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} // namespace vendor
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