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Universal F2FS file system analyzing method, terminal equipment and storage medium

A file system and parsing method technology, applied in the field of computer file systems, can solve the problems of file system portability and poor compatibility, and achieve the effect of good stability and compatibility

Active Publication Date: 2018-05-29
XIAMEN MEIYA PICO INFORMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention aims to provide a general F2FS file system analysis method, terminal equipment and storage medium, which solves the problem of poor portability and compatibility of the file system

Method used

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  • Universal F2FS file system analyzing method, terminal equipment and storage medium

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Embodiment 1

[0026] Embodiment 1 of the present invention provides a general F2FS file system analysis method, such as figure 1 As shown, it is a schematic flow chart of the general F2FS file system analysis method described in Embodiment 1 of the present invention, and the method may include the following steps:

[0027] S100: Simulate the process of mounting (mount), and construct the metadata of the F2FS file system.

[0028] The mount is to mount the partition under a folder of Linux, thereby associating the partition with the directory, so as long as we access this folder, it is equivalent to accessing the partition. In this embodiment, by mirroring The disk file is attached to a folder in Linux, thereby linking the image disk file with the folder directory.

[0029] In the process, relevant actions such as initialization or assignment of operating system environment variables are eliminated, and only the part of the process that operates on the file system is retained.

[0030] The...

Embodiment 2

[0072] The present invention also provides a general-purpose F2FS file system analysis terminal device, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, it realizes Steps in the above method embodiment of Embodiment 1 of the present invention.

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Abstract

The invention relates to a universal F2FS file system analyzing method, terminal equipment and a storage medium. The method includes the following steps that S100, the mount process is simulated, andmetadata of an F2FS file system is established, wherein S110 includes the following process that S110, content of super blocks is verified, S120, the super blocks are initialized, S130, effective check points are selected, S140, a segment information table is established, and S150, a node address table is initialized; S200, file directory entries are established according to universal directory entry blocks, wherein the universal directory entry blocks include but not limited to the following components of file types, index node numbers, parent item index node numbers, file sizes, creation time, correction time, file name pointers, file name lengths, a pointer pointing to a next node and a first node pointer pointing to an effective directory. The problem of poor transportability and compatibility of a file system is solved.

Description

technical field [0001] The invention relates to the field of computer file systems, in particular to a general F2FS (Flash Friendly File System) file system analysis method, terminal equipment and storage media. Background technique [0002] The current Android mobile device terminal user data partition file system type is usually EXT (Extended file system, Extended file system) or F2FS, especially widely used on Android smart phones, EXT is used as an earlier Linux file system, using The scope is wide, and there are a certain number of technical documents and related patents. However, as a new Linux file system, F2FS has certain advantages in overall performance compared to EXT. It is frequently used in some mid-to-high-end mobile phones, and no relevant technology patents. [0003] The EXT file system supports a sector size range of 512 / 1024 / 2048 / 4096 bytes, and a block size of 4KB. The analysis method is to directly traverse and analyze directory items based on bitmap in...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/13G06F16/164
Inventor 潘泽汇陈明辉张辉极曹荣鑫
Owner XIAMEN MEIYA PICO INFORMATION
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