80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
/*
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* Copyright (C) 2015 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 ANDROID_VOLD_EMULATED_VOLUME_H
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#define ANDROID_VOLD_EMULATED_VOLUME_H
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#include "VolumeBase.h"
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#include <cutils/multiuser.h>
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namespace android {
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namespace vold {
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/*
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* Shared storage emulated on top of private storage.
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*
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* Knows how to spawn a sdcardfs daemon to synthesize permissions. ObbVolume
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* can be stacked above it.
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*
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* This volume is always multi-user aware, but is only binds itself to
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* users when its primary storage. This volume should never be presented
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* as secondary storage, since we're strongly encouraging developers to
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* store data local to their app.
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*/
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class EmulatedVolume : public VolumeBase {
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public:
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explicit EmulatedVolume(const std::string& rawPath, int userId);
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EmulatedVolume(const std::string& rawPath, dev_t device, const std::string& fsUuid, int userId);
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virtual ~EmulatedVolume();
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std::string getRootPath() const override;
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bool isFuseMounted() const { return mFuseMounted; }
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protected:
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status_t doMount() override;
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status_t doUnmount() override;
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private:
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status_t unmountSdcardFs();
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status_t mountFuseBindMounts();
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status_t unmountFuseBindMounts();
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std::string getLabel();
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std::string mRawPath;
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std::string mLabel;
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std::string mSdcardFsDefault;
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std::string mSdcardFsRead;
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std::string mSdcardFsWrite;
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std::string mSdcardFsFull;
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/* Whether we mounted FUSE for this volume */
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bool mFuseMounted;
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/* Whether to use sdcardfs for this volume */
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bool mUseSdcardFs;
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/* Whether to use app data isolation is enabled tor this volume */
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bool mAppDataIsolationEnabled;
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DISALLOW_COPY_AND_ASSIGN(EmulatedVolume);
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};
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} // namespace vold
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} // namespace android
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#endif
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