Safety management method and device of file system

A security management and file system technology, applied in the field of security management of file systems in mobile storage devices, can solve the problem of mismatching physical characteristics of flash memory, and achieve the effect of power failure protection
CN101046803AActive Publication Date: 2007-10-03LEADCORE TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
LEADCORE TECH
Publication Date
2007-10-03

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Abstract

The present invention relates to a safety management method of file system and its device. The described method includes the following steps: A, dividing initialized flash memory into several logical sectors, and noting state of every logical sector; B, in the flash memory interior creating mapping table of logic sector and physical sector; and C, when the data are written into logic sector, searching or modifying mapping table and making recovery management of abnormal condition. The described device includes the following several portions: division unit, creation unit and recovery management unit.
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Description

technical field

[0001] The invention relates to file system security management, in particular to a file system security management method and device in a mobile storage device. Background technique

[0002] With the development of society, mobile phones have more and more functions, and their storage capacity is also increasing. Users can regard mobile phones as a multi-functional portable information processing device, which not only has functions such as telephone calls and text messages, but also As mobile storage information, therefore, there is a need to use mobile phones as mobile storage devices. In addition, since the vast majority of PCs use the file allocation table system (FAT, File Allocation Table), most existing mobile phones also use the FAT file system to adapt to it. However, the characteristics of the storage medium Flash and the shortcomings of the FAT file system still exist on the mobile phone at present, so that the FAT file system on the mobile phone...

Claims

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