a370c14f75
runIdleMaint is equivalent with:
1. echo 1 > /sys/fs/f2fs/sdX/gc_urgent
2. wait until /sys/fs/f2fs/sdX/dirty_segments
<= threshold or timeout
3. echo 0 > /sys/fs/f2fs/sdX/gc_urgent
4. fstrim
abortIdleMaint forces the wait loop above to exit and
skips fstrim. However, if fstrim is already running,
abortIdleMaint will just leave it run to completion.
Test: adb shell sm idle-maint [run|abort]
Bug: 67776637
Change-Id: I4adff8d9b6bbd63bce41368cea55dc9e9b117eb6
80 lines
2.3 KiB
C++
80 lines
2.3 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_PRIVATE_VOLUME_H
|
|
#define ANDROID_VOLD_PRIVATE_VOLUME_H
|
|
|
|
#include "VolumeBase.h"
|
|
|
|
#include <cutils/multiuser.h>
|
|
|
|
namespace android {
|
|
namespace vold {
|
|
|
|
/*
|
|
* Private storage provided by an encrypted partition.
|
|
*
|
|
* Given a raw block device, it knows how to wrap it in dm-crypt and
|
|
* format as ext4/f2fs. EmulatedVolume can be stacked above it.
|
|
*
|
|
* This volume is designed to behave much like the internal /data
|
|
* partition, both in layout and function. For example, apps and
|
|
* private app data can be safely stored on this volume because the
|
|
* keys are tightly tied to this device.
|
|
*/
|
|
class PrivateVolume : public VolumeBase {
|
|
public:
|
|
PrivateVolume(dev_t device, const std::string& keyRaw);
|
|
virtual ~PrivateVolume();
|
|
const std::string& getFsType() { return mFsType; };
|
|
const std::string& getRawDevPath() { return mRawDevPath; };
|
|
|
|
protected:
|
|
status_t doCreate() override;
|
|
status_t doDestroy() override;
|
|
status_t doMount() override;
|
|
status_t doUnmount() override;
|
|
status_t doFormat(const std::string& fsType) override;
|
|
|
|
status_t readMetadata();
|
|
|
|
private:
|
|
/* Kernel device of raw, encrypted partition */
|
|
dev_t mRawDevice;
|
|
/* Path to raw, encrypted block device */
|
|
std::string mRawDevPath;
|
|
/* Path to decrypted block device */
|
|
std::string mDmDevPath;
|
|
/* Path where decrypted device is mounted */
|
|
std::string mPath;
|
|
|
|
/* Encryption key as raw bytes */
|
|
std::string mKeyRaw;
|
|
|
|
/* Filesystem type */
|
|
std::string mFsType;
|
|
/* Filesystem UUID */
|
|
std::string mFsUuid;
|
|
/* User-visible filesystem label */
|
|
std::string mFsLabel;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(PrivateVolume);
|
|
};
|
|
|
|
} // namespace vold
|
|
} // namespace android
|
|
|
|
#endif
|