A method, device and storage medium for off-line modification of an ext file system

A file system and modification device technology, which is applied in the direction of file system, file system function, file access structure, etc., can solve the problem that the Ext file system is difficult to control through offline modification, and achieve simple and accurate offline modification, speed improvement, and optimization Effects of initialization conditions

Active Publication Date: 2021-11-23
XIAMEN MEIYA PICO INFORMATION
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Problems solved by technology

[0005] As mentioned above, it is difficult to modify the Ext file system through offline modification and the control is difficult. The purpose of the embodiments of this application is to propose a method, device and storage medium to solve the technical problems mentioned in the background technology section above.

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  • A method, device and storage medium for off-line modification of an ext file system
  • A method, device and storage medium for off-line modification of an ext file system
  • A method, device and storage medium for off-line modification of an ext file system

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Embodiment Construction

[0068] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0069] figure 1 An exemplary system architecture 100 to which the method for offline modification of an EXT file system or the device for offline modification of an EXT file system according to the embodiments of the present application can be applied is shown.

[0070] like figure 1 As shown, the system architecture 100 may include terminal devices 101 , 102 , 103 , a network 104 and a server 105 . The network 104 is used as a medium...

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Abstract

The invention discloses a method and device for offline modification of an EXT file system, comprising: extracting an image file of a physical storage device, obtaining an EXT partition to be accessed from the image file; initializing the EXT partition, and reading a super block in the EXT partition , group descriptor, block bitmap, node bitmap and node table; traverse the EXT partition according to the file name path or node number path of the target file, and obtain the mirror position where the target file is located; File properties are modified. This solution optimizes the initialization conditions of the file system, and can access a file independently, and greatly improves the speed of accessing files. At the same time, it supports file name path and node number path traversal, which is convenient and effective for locating the file location and obtaining the file structure. And it can precisely control the modification granularity, making the offline modification method simple and accurate.

Description

technical field [0001] The invention relates to the field of file system modification, in particular to an off-line modification method, device and storage medium of an EXT file system. Background technique [0002] The EXT file system is the default file system of many Linux operating system distributions. EXT uses multiple locations in the entire file system to store backups of important data structures, making it highly recoverable. There are two ways in the existing EXT file system access technology, one is direct online access to the physical storage device, and the other is offline access through the physical storage device image. The offline access method is mainly to directly analyze the file system of the image. After analyzing the file system of the image, the directory structure and files of the physical storage device can be obtained for the next step of file analysis. [0003] At present, through offline access to the image of the physical storage device, only ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/16G06F16/17G06F16/13
CPCG06F16/13G06F16/16G06F16/162G06F16/166G06F16/1727
Inventor 李永兴翟晓飞张辉极陈明辉
Owner XIAMEN MEIYA PICO INFORMATION
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