dd1e91ff58
FUSE BPF aims at achieving comparable performance to bind-mounts, with the flexibility of FUSE. Disable data and obb bind-mounts in favor of the FUSE filesystem if the system implements the feature. Bug: 202785178 Test: mount | grep obb Signed-off-by: Alessio Balsini <balsini@google.com> Change-Id: Ia8b289b84542125831a857b559bb6f93afbee494
82 lines
2.4 KiB
C++
82 lines
2.4 KiB
C++
/*
|
|
* Copyright (C) 2015 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef ANDROID_VOLD_EMULATED_VOLUME_H
|
|
#define ANDROID_VOLD_EMULATED_VOLUME_H
|
|
|
|
#include "VolumeBase.h"
|
|
|
|
#include <cutils/multiuser.h>
|
|
|
|
namespace android {
|
|
namespace vold {
|
|
|
|
/*
|
|
* Shared storage emulated on top of private storage.
|
|
*
|
|
* Knows how to spawn a sdcardfs daemon to synthesize permissions. ObbVolume
|
|
* can be stacked above it.
|
|
*
|
|
* This volume is always multi-user aware, but is only binds itself to
|
|
* users when its primary storage. This volume should never be presented
|
|
* as secondary storage, since we're strongly encouraging developers to
|
|
* store data local to their app.
|
|
*/
|
|
class EmulatedVolume : public VolumeBase {
|
|
public:
|
|
explicit EmulatedVolume(const std::string& rawPath, int userId);
|
|
EmulatedVolume(const std::string& rawPath, dev_t device, const std::string& fsUuid, int userId);
|
|
virtual ~EmulatedVolume();
|
|
std::string getRootPath() const override;
|
|
bool isFuseMounted() const { return mFuseMounted; }
|
|
|
|
protected:
|
|
status_t doMount() override;
|
|
status_t doUnmount() override;
|
|
|
|
private:
|
|
status_t unmountSdcardFs();
|
|
status_t mountFuseBindMounts();
|
|
status_t unmountFuseBindMounts();
|
|
|
|
std::string getLabel();
|
|
std::string mRawPath;
|
|
std::string mLabel;
|
|
|
|
std::string mSdcardFsDefault;
|
|
std::string mSdcardFsRead;
|
|
std::string mSdcardFsWrite;
|
|
std::string mSdcardFsFull;
|
|
|
|
/* Whether we mounted FUSE for this volume */
|
|
bool mFuseMounted;
|
|
|
|
/* Whether the FUSE BPF feature is enabled */
|
|
bool mFuseBpfEnabled;
|
|
|
|
/* Whether to use sdcardfs for this volume */
|
|
bool mUseSdcardFs;
|
|
|
|
/* Whether to use app data isolation is enabled tor this volume */
|
|
bool mAppDataIsolationEnabled;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(EmulatedVolume);
|
|
};
|
|
|
|
} // namespace vold
|
|
} // namespace android
|
|
|
|
#endif
|