Android operation system protection method based on input/output request intercepted by VFS (virtual file system) layer

Abstract

The invention discloses an Android operation system protection method based on input / output (I / O) request intercepted by a VFS (virtual file system) layer, and relates to the field of data security of mobile terminal equipment. The Android operation system protection method comprises the steps that: an Android operation system based on Linux comprises an application layer and an inner core layer, and when the application layer access the data on the equipment, the I / O request is transmitted to the VFS layer of the inner core layer; the I / O request is intercepted by the VFS layer of the inner core layer, the target area of the I / O request is amended or remained according to a preset policy, and then the I / O request is transmitted to an actual file system; and the I / O request is transmitted to a driving program of the equipment by the actual file system. According to the Android operation system provided by the invention, the problem of file and data garbage generated by frequent software installation and unloading is solved, and all Linux-supported file system formats are supported; the operation is simple, a normal subscriber can independently operate and the reset rate is high; and the I / O data bulk is low, and the loss of the storage equipment is reduced.

Description

technical field [0001] The invention relates to the field of data security of mobile terminal equipment, in particular to an Android operating system protection method for intercepting read and write requests based on a VFS layer. Background technique [0002] The Android (Android) operating system is a Linux-based open source operating system, mainly used for portable devices, which is developed and led by Google and the Open Handheld Devices Alliance. Due to the openness and freedom of the Android operating system and the rapid popularization of a large number of smart devices, a large number of applications, games and other software are provided for users to download and install on the Android Market and other application markets. As users frequently download, install and use software, a large amount of files and data will be generated on storage devices with limited space. Even if the software is uninstalled, some files and data will still remain on the storage device. ...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiency of above-mentioned background technology, provide a kind of Android operating system protection method based on VFS layer to intercept reading and writing request, can solve the problem of file and data rubbish due to frequently installing and uninstalling software, support all Linux supports file system format; simple operation, ordinary users can operate independently, and fast recovery speed; small amount of read and write data reduces the loss of storage devices

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