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/*
* Copyright (C) 2015 The Android Open Source Project
* Copyright (C) 2019 The LineageOS 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_VOLMGR_DISK_H
#define ANDROID_VOLMGR_DISK_H
#include "Utils.h"
#include "VolumeBase.h"
#include <utils/Errors.h>
#include <vector>
#include <volume_manager/VolumeManager.h>
namespace android {
namespace volmgr {
class VolumeBase;
/*
* Representation of detected physical media.
*
* Knows how to create volumes based on the partition tables found, and also
* how to repartition itself.
*/
class Disk {
public:
Disk(const std::string& eventPath, dev_t device, const std::string& nickname, int flags);
virtual ~Disk();
enum Flags {
/* Flag that disk is adoptable */
kAdoptable = 1 << 0,
/* Flag that disk is considered primary when the user hasn't
* explicitly picked a primary storage location */
kDefaultPrimary = 1 << 1,
/* Flag that disk is SD card */
kSd = 1 << 2,
/* Flag that disk is USB disk */
kUsb = 1 << 3,
/* Flag that disk is EMMC internal */
kEmmc = 1 << 4,
/* Flag that disk is non-removable */
kNonRemovable = 1 << 5,
};
const std::string& getId() { return mId; }
const std::string& getEventPath() { return mEventPath; }
const std::string& getSysPath() { return mSysPath; }
const std::string& getDevPath() { return mDevPath; }
dev_t getDevice() { return mDevice; }
uint64_t getSize() { return mSize; }
const std::string& getLabel() { return mLabel; }
int getFlags() { return mFlags; }
void getVolumeInfo(std::vector<VolumeInfo>& info);
std::shared_ptr<VolumeBase> findVolume(const std::string& id);
void listVolumes(VolumeBase::Type type, std::list<std::string>& list);
virtual status_t create();
virtual status_t destroy();
virtual status_t readMetadata();
virtual status_t readPartitions();
status_t unmountAll();
protected:
/* ID that uniquely references this disk */
std::string mId;
/* Original event path */
std::string mEventPath;
/* Device path under sysfs */
std::string mSysPath;
/* Device path under dev */
std::string mDevPath;
/* Kernel device representing disk */
dev_t mDevice;
/* Size of disk, in bytes */
uint64_t mSize;
/* User-visible label, such as manufacturer */
std::string mLabel;
/* Current partitions on disk */
std::vector<std::shared_ptr<VolumeBase>> mVolumes;
/* Nickname for this disk */
std::string mNickname;
/* Flags applicable to this disk */
int mFlags;
/* Flag indicating object is created */
bool mCreated;
/* Flag that we need to skip first disk change events after partitioning*/
bool mSkipChange;
void createPublicVolume(dev_t device, const std::string& fstype = "",
const std::string& mntopts = "");
void destroyAllVolumes();
int getMaxMinors();
DISALLOW_COPY_AND_ASSIGN(Disk);
};
} // namespace volmgr
} // namespace android
#endif
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