1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <android-base/result.h> 20 #include <libdm/dm.h> 21 22 #include <string> 23 24 namespace android::apex { 25 26 class DmDevice { 27 public: DmDevice()28 DmDevice() : cleared_(true) {} DmDevice(const std::string & name)29 explicit DmDevice(const std::string& name) : name_(name), cleared_(false) {} DmDevice(const std::string & name,const std::string & dev_path)30 DmDevice(const std::string& name, const std::string& dev_path) 31 : name_(name), dev_path_(dev_path), cleared_(false) {} 32 DmDevice(DmDevice && other)33 DmDevice(DmDevice&& other) noexcept 34 : name_(std::move(other.name_)), 35 dev_path_(std::move(other.dev_path_)), 36 cleared_(other.cleared_) { 37 other.cleared_ = true; 38 } 39 40 DmDevice& operator=(DmDevice&& other) noexcept { 41 name_ = other.name_; 42 dev_path_ = other.dev_path_; 43 cleared_ = other.cleared_; 44 other.cleared_ = true; 45 return *this; 46 } 47 48 ~DmDevice(); 49 GetName()50 const std::string& GetName() const { return name_; } GetDevPath()51 const std::string& GetDevPath() const { return dev_path_; } 52 Release()53 void Release() { cleared_ = true; } 54 55 private: 56 std::string name_; 57 std::string dev_path_; 58 bool cleared_; 59 }; 60 61 base::Result<DmDevice> CreateDmDevice(const std::string& name, 62 const dm::DmTable& table, 63 bool reuse_device); 64 65 base::Result<void> DeleteDmDevice(const std::string& name, bool deferred); 66 67 } // namespace android::apex 68