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Disk data protection method oriented to Linux operating system

An operating system and data protection technology, applied in the direction of protecting stored content from loss, etc.

Inactive Publication Date: 2014-07-16
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no public literature related to the method of using Loop device for disk data protection

Method used

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  • Disk data protection method oriented to Linux operating system
  • Disk data protection method oriented to Linux operating system
  • Disk data protection method oriented to Linux operating system

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0077] Figure 4 It is a flow chart of disk data access by a Linux-like operating system after adding a disk protection module (DSP module) in the present invention. The DSP module is loaded in the driver program code of the Loop device. The user's data access request enters the operating system kernel by calling the file system interface, and is intercepted by the Extx file system module. The Extx file system module then calls the Loop device driver module with the DSP module, and the Loop device driver module with the DSP module calls the association The underlying physical disk device driver module performs disk data operations and returns the results to the user.

[0078] Figure 5 It is an overall flow chart of the present invention.

[0079] The first step is to modify the loop_init, lo_receive, lo_send and loop_exit functions of the Loop device, and collectively refer to the modified Loop device driver as a data security protection module, abbreviated as a DSP (Data ...

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PUM

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Abstract

The invention discloses a disk data protection method oriented to a Linux operating system. The technical scheme comprises modifying four functions of a loop device including adding DSP_init () at the beginning of loop_init, adding DSP_receive () at the beginning of lo_receive, adding DSP_send () at the beginning of lo_send, and adding DSP_exit () at the beginning of loop_exit; generating loop. ko; loading loop. ko, and initializing DSP_init (); if the user requests for reading disk data, modifying pos by the DSP_receive (); if the user requests for writing disk data, modifying pos by the DSP_send (); and if the user requests for exiting, unloading by the DSP_exit (). The invention can realize transparent protection on disk data.

Description

technical field [0001] The invention relates to the field of computer file systems and storage, in particular to a disk data protection method oriented to a Linux-like operating system. Background technique [0002] Among the mainstream operating systems recently, the Windows operating system occupies most of the market. However, the closed source and security of the Windows system have also brought about increasingly serious problems. The Linux-like operating system is more and more widely used in the world because of its high performance, high security and open source code. Especially in the key areas related to national security, such as government and military industry, countries have adopted independent and controllable operating systems as an important national strategic planning project, and more and more domestic users adopt Linux-like systems. my country has also developed independent and controllable domestic operating systems based on Linux-like operating system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/16
Inventor 汪黎王开宇梁镇吴庆波戴华东
Owner NAT UNIV OF DEFENSE TECH