Hierarchical management and control method and system for Android file system
A file system, management and control technology, applied in the direction of computer security devices, instruments, electrical digital data processing, etc., can solve problems such as failure, data cannot be written, etc.
Pending Publication Date: 2021-05-04
SHANGHAI SUMI TECH CO LTD +1
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Problems solved by technology
Once the number of available data blocks or inodes reaches 0, saving a new file will fail; the data that other key programs need to write cannot be written
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[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application, and those skilled in the art can also apply the present application to other similar scenarios. Unless otherwise apparent from context or otherwise indicated, like reference numerals in the figures represent like structures or operations.
[0025] As indicated in this application and claims, the terms "a", "an", "an" and / or "the" do not refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and ...
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The invention provides a hierarchical management and control method and system for an Android file system, and the method comprises the steps: generating a strategy file which comprises a white list; receiving a file creating instruction and / or a data writing instruction of the main body, obtaining a current residual space parameter group comprising one or more space parameters, and judging whether each space parameter in the space parameter group is greater than a first threshold value of each corresponding space parameter in a first threshold value group or not; if the judgment result is yes, executing a request for creating a file and / or writing data, otherwise, judging whether each spatial parameter in the spatial parameter group is greater than a second threshold value of each corresponding spatial parameter in the second threshold value group, and if the judgment result is yes, continuing to judge whether the main body is in the white list; otherwise, refusing to execute the request for creating the file and / or writing the data. According to the method, hierarchical control of the capability of writing into the disk can be realized, the feasibility of key file creation and key data writing is ensured, and the availability and stability of the system are ensured.
Description
technical field [0001] The present invention mainly relates to the field of operating system management and control, in particular to a hierarchical management and control method and system for an Android file system. Background technique [0002] The mechanism adopted by the current Android system is that the apk (Android Application Package, Android application package) is stored in the / data / directory after installation, and the data directory is generally formed by the mount point of the more commonly used Ext4 file system. [0003] Although the data of each application is independent and cannot access each other, the remaining available data space is shared. Once some applications are malicious or there is no space left due to bugs, then other normal applications or systems have no way Normal storage operation, may cause system crash. A more common phenomenon is that after restarting the system, the system cannot be turned on directly, and is always stuck in the boot ...
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IPC IPC(8): G06F21/62
CPCG06F21/6218G06F2221/2107
Inventor 胡艳伟林喆毛旭佳徐帅
Owner SHANGHAI SUMI TECH CO LTD