0ee285aa68
Use introduced FileLock and network-connected devices storage entities to introduce fastboot connect / disconnect commands Test: everything works like discussed here go/fastboot-connect-disconnect on windows/linux Bug: 267507450 Bug: 267506875 Change-Id: I2d6495ad567a3ddadd471a89b82d78c8c36a3d52 Signed-off-by: Dmitrii Merkurev <dimorinny@google.com>
67 lines
No EOL
2.5 KiB
C++
67 lines
No EOL
2.5 KiB
C++
/*
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* Copyright (C) 2023 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 <android-base/file.h>
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#include <android-base/logging.h>
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#include <fstream>
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#include "storage.h"
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#include "util.h"
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ConnectedDevicesStorage::ConnectedDevicesStorage() {
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const std::string home_path = GetHomeDirPath();
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if (home_path.empty()) {
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return;
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}
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const std::string home_fastboot_path = home_path + kPathSeparator + ".fastboot";
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if (!EnsureDirectoryExists(home_fastboot_path)) {
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LOG(FATAL) << "Cannot create directory: " << home_fastboot_path;
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}
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// We're using a separate file for locking because the Windows LockFileEx does not
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// permit opening a file stream for the locked file, even within the same process. So,
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// we have to use fd or handle API to manipulate the storage files, which makes it
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// nearly impossible to fully rewrite a file content without having to recreate it.
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// Unfortunately, this is not an option during holding a lock.
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devices_path_ = home_fastboot_path + kPathSeparator + "devices";
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devices_lock_path_ = home_fastboot_path + kPathSeparator + "devices.lock";
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}
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void ConnectedDevicesStorage::WriteDevices(const FileLock&, const std::set<std::string>& devices) {
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std::ofstream devices_stream(devices_path_);
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std::copy(devices.begin(), devices.end(),
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std::ostream_iterator<std::string>(devices_stream, "\n"));
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}
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std::set<std::string> ConnectedDevicesStorage::ReadDevices(const FileLock&) {
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std::ifstream devices_stream(devices_path_);
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std::istream_iterator<std::string> start(devices_stream), end;
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std::set<std::string> devices(start, end);
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return devices;
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}
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void ConnectedDevicesStorage::Clear(const FileLock&) {
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if (!android::base::RemoveFileIfExists(devices_path_)) {
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LOG(FATAL) << "Failed to clear connected device list: " << devices_path_;
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}
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}
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FileLock ConnectedDevicesStorage::Lock() const {
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return FileLock(devices_lock_path_);
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} |