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106 lines
3.8 KiB
106 lines
3.8 KiB
/*
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* Copyright (C) 2018 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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#ifndef IDMAP2_IDMAP2D_IDMAP2SERVICE_H_
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#define IDMAP2_IDMAP2D_IDMAP2SERVICE_H_
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#include <android-base/unique_fd.h>
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#include <android/os/BnIdmap2.h>
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#include <android/os/FabricatedOverlayInfo.h>
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#include <binder/BinderService.h>
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#include <idmap2/ResourceContainer.h>
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#include <idmap2/Result.h>
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#include <filesystem>
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#include <memory>
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#include <mutex>
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#include <optional>
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#include <string>
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#include <variant>
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#include <vector>
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namespace android::os {
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class Idmap2Service : public BinderService<Idmap2Service>, public BnIdmap2 {
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public:
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static char const* getServiceName() {
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return "idmap";
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}
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binder::Status getIdmapPath(const std::string& overlay_path, int32_t user_id,
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std::string* _aidl_return) override;
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binder::Status removeIdmap(const std::string& overlay_path, int32_t user_id,
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bool* _aidl_return) override;
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binder::Status verifyIdmap(const std::string& target_path, const std::string& overlay_path,
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const std::string& overlay_name, int32_t fulfilled_policies,
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bool enforce_overlayable, int32_t user_id,
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bool* _aidl_return) override;
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binder::Status createIdmap(const std::string& target_path, const std::string& overlay_path,
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const std::string& overlay_name, int32_t fulfilled_policies,
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bool enforce_overlayable, int32_t user_id,
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std::optional<std::string>* _aidl_return) override;
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binder::Status createFabricatedOverlay(
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const os::FabricatedOverlayInternal& overlay,
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std::optional<os::FabricatedOverlayInfo>* _aidl_return) override;
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binder::Status deleteFabricatedOverlay(const std::string& overlay_path,
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bool* _aidl_return) override;
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binder::Status acquireFabricatedOverlayIterator(int32_t* _aidl_return) override;
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binder::Status releaseFabricatedOverlayIterator(int32_t iteratorId) override;
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binder::Status nextFabricatedOverlayInfos(int32_t iteratorId,
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std::vector<os::FabricatedOverlayInfo>* _aidl_return) override;
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binder::Status dumpIdmap(const std::string& overlay_path, std::string* _aidl_return) override;
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private:
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// idmap2d is killed after a period of inactivity, so any information stored on this class should
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// be able to be recalculated if idmap2 dies and restarts.
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std::unique_ptr<idmap2::TargetResourceContainer> framework_apk_cache_;
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int32_t frro_iter_id_ = 0;
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std::optional<std::filesystem::directory_iterator> frro_iter_;
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std::mutex frro_iter_mutex_;
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template <typename T>
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using MaybeUniquePtr = std::variant<std::unique_ptr<T>, T*>;
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using TargetResourceContainerPtr = MaybeUniquePtr<idmap2::TargetResourceContainer>;
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idmap2::Result<TargetResourceContainerPtr> GetTargetContainer(const std::string& target_path);
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template <typename T>
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WARN_UNUSED static const T* GetPointer(const MaybeUniquePtr<T>& ptr);
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};
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template <typename T>
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const T* Idmap2Service::GetPointer(const MaybeUniquePtr<T>& ptr) {
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auto u = std::get_if<T*>(&ptr);
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if (u != nullptr) {
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return *u;
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}
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return std::get<std::unique_ptr<T>>(ptr).get();
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}
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} // namespace android::os
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#endif // IDMAP2_IDMAP2D_IDMAP2SERVICE_H_
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