Method and device for detecting change of file system and corresponding electronic device

Abstract

Disclosed are a method and a device for detecting change of a file system and a corresponding electronic device. The method for detecting the change of the file system includes: intercepting a notification sent by an inner core of a current operation system when the inner core monitors a file operation event on a monitoring living example based on a file system change notification mechanism of the inner core of the current operation system; after intercepting the notification sent by the inner core, reading a first event structure cached by the inner core, and packing file operation information of the file operation event in the first event structure; filtering event structures to be selected according to configured filter conditions for the file operation information, and reporting the event structures to be selected, which conform to the filter conditions. The device for detecting the change of the file system comprises an interception module, a reading module and a filter module. The corresponding electronic device comprises the device for detecting the change of the file system. By adopting the technical scheme, precise event reporting suitable in granularity is provided to a high level system, and an existing detection processing thread model is optimized.

Description

technical field [0001] The present application relates to file management, and more specifically, to a detection method, detection device and corresponding electronic equipment for file system changes. Background technique [0002] In many system developments, it is often necessary to detect or perceive changes in files ("files" in this application refer to the physical unit that stores data in a computer system, including commonly referred to as files and directories). Changes in the log file (such as size, file name, and last modification time, etc.), which trigger further processing. The usual method is to use the polling method to detect file changes, such as scanning the metadata information of the file according to a certain frequency through a daemon thread, and then comparing the recorded last information with the information obtained this time to determine the file change . However, because the solution uses a certain periodic frequency to perform the collection o...

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Problems solved by technology

However, because the scheme uses a certain periodic frequency to perform the collection of file information, the changes that occur during the polling interval may be ignored, which will lead to errors in file processing

[0003] The Linux kernel provides a file system change notification mechanism called Inotify. On the Andorid system, there is a system kernel monitoring implementation based on Inotify, which can detect file changes in real time. However, this implementation can only be based on Android phones and is not applicable to other System platform

Moreover, this solution can only create one Inotify instance when multiple processing modules of an application need to monitor different files at the same time. If these files change at the same time, the Inotify instance can only report multiple events. Filtering and dispatching events for different processing modules, the thread monitoring model is very inefficient

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