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136 lines
4.0 KiB
136 lines
4.0 KiB
/*
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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_DISK_H
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#define ANDROID_VOLD_DISK_H
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#include "StubVolume.h"
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#include "Utils.h"
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#include "VolumeBase.h"
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#include <utils/Errors.h>
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#include <vector>
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namespace android {
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namespace vold {
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class VolumeBase;
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/*
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* Representation of detected physical media.
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*
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* Knows how to create volumes based on the partition tables found, and also
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* how to repartition itself.
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*/
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class Disk {
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public:
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Disk(const std::string& eventPath, dev_t device, const std::string& nickname, int flags);
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virtual ~Disk();
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enum Flags {
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/* Flag that disk is adoptable */
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kAdoptable = 1 << 0,
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/* Flag that disk is considered primary when the user hasn't
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* explicitly picked a primary storage location */
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kDefaultPrimary = 1 << 1,
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/* Flag that disk is SD card */
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kSd = 1 << 2,
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/* Flag that disk is USB disk */
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kUsb = 1 << 3,
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/* Flag that disk is EMMC internal */
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kEmmc = 1 << 4,
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/* Flag that disk is Stub disk, i.e., disk that is managed from outside
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* Android (e.g., ARC++). */
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kStub = 1 << 5,
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/* Flag that disk is non-removable */
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kNonRemovable = 1 << 6,
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};
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const std::string& getId() const { return mId; }
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const std::string& getEventPath() const { return mEventPath; }
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const std::string& getSysPath() const { return mSysPath; }
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const std::string& getDevPath() const { return mDevPath; }
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dev_t getDevice() const { return mDevice; }
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uint64_t getSize() const { return mSize; }
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const std::string& getLabel() const { return mLabel; }
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int getFlags() const { return mFlags; }
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std::shared_ptr<VolumeBase> findVolume(const std::string& id);
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void listVolumes(VolumeBase::Type type, std::list<std::string>& list) const;
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std::vector<std::shared_ptr<VolumeBase>> getVolumes() const;
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virtual status_t create();
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virtual status_t destroy();
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virtual status_t readMetadata();
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virtual status_t readPartitions();
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void initializePartition(std::shared_ptr<StubVolume> vol);
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status_t unmountAll();
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virtual status_t partitionPublic();
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virtual status_t partitionPrivate();
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virtual status_t partitionMixed(int8_t ratio);
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protected:
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/* ID that uniquely references this disk */
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std::string mId;
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/* Original event path */
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std::string mEventPath;
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/* Device path under sysfs */
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std::string mSysPath;
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/* Device path under dev */
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std::string mDevPath;
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/* Kernel device representing disk */
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dev_t mDevice;
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/* Size of disk, in bytes */
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uint64_t mSize;
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/* User-visible label, such as manufacturer */
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std::string mLabel;
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/* Current partitions on disk */
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std::vector<std::shared_ptr<VolumeBase>> mVolumes;
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/* Nickname for this disk */
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std::string mNickname;
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/* Flags applicable to this disk */
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int mFlags;
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/* Flag indicating object is created */
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bool mCreated;
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/* Flag that we just partitioned and should format all volumes */
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bool mJustPartitioned;
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/* Flag that we need to skip first disk change events after partitioning*/
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bool mSkipChange;
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void createPublicVolume(dev_t device);
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void createPrivateVolume(dev_t device, const std::string& partGuid);
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void createStubVolume();
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void destroyAllVolumes();
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int getMaxMinors();
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bool isStub() { return mFlags & kStub; }
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DISALLOW_COPY_AND_ASSIGN(Disk);
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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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