Intelligent storage and expansion equipment and access control system and method thereof

Abstract

The invention is suitable for the technical field of information storage and provides intelligent storage and expansion equipment and an access control system and an access control method thereof. The method comprises the following steps of: receiving an access command sent by a host by the intelligent storage and expansion equipment; judging whether an access address written in the command is a section address where a directory entry corresponding to an interface file is; if the access address is the section address, comparing data written in the command with initial data in the directory entry corresponding to the interface file and judging whether the data written in the command only updates a modification time parameter or an access time parameter of the directory entry corresponding to the interface file; and when the data written in the command only updates the modification time parameter or the access time parameter of the directory entry corresponding to the interface file, discarding the data written in the command by the intelligent storage and expansion equipment and returning a response in which the data is already written to the host. In the method, times of rewriting in a storage module are reduced, and the service life of the storage module is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of information storage, and in particular relates to an intelligent storage expansion device and its access control system and method. Background technique [0002] The existing FAT file system is implemented to manage the storage expansion device of its storage module. The storage expansion device not only has a storage module but also has a function expansion module, such as an intelligent storage expansion device containing a smart device chip. The described The smart storage expansion device not only has a storage module, but also has a smart device module that can realize specific functions. These storage expansion devices will create one or several specific interface files mapped as function expansion modules. When the host end establishes a connection with the storage expansion device, the interface file is used as an interface to establish a logical channel with the host end. Under the scope of the ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an access control method for an intelligent storage expansion device, aiming at solving the problem of frequently updating the corresponding directory items stored in the storage module when the host side operates the interface file in the prior art, resulting in the failure of the storage module. The problem of short life

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