37 results about "File Fixity" patented technology

Provided are a method and system for repairing a file at user terminal. The method comprises: scanning a file at user terminal, determining whether the file is abnormal, and acquiring file characteristics information; if the file is abnormal, then according to the file characteristics information, acquiring from a cloud server a secure file corresponding to the abnormal file and uploaded before abnormity occurring, wherein the secure file in the cloud server is acquired by directly uploading file of user terminal; and replacing the corresponding abnormal file of the user terminal with the secure file. The method and system save the secure files of each user terminal in a cloud server, and when an abnormal file occurs in the user terminal, download the secure version of a corresponding file from the cloud server to replace the local abnormal file, thus ensuring recovery of the correct version of the file into the system, and solving the problems that the abnormal file cannot be restored to normal status during the conventional file repair process or cannot be repaired due to complexities caused by virus infection.

The invention provides an application program restoration method, device and system, a storage medium and an electronic device, and the method comprises the steps: receiving error information reportedby a client in response to the abnormal operation of a target application program; generating a repair file of the target application program according to the error information; and when it is detected that the target application program is online, pushing the repair file to the client, so as to enable the client to use the repair file to repair the target application program. Through the methodand the device, the technical problem that the application program fault can be repaired only through software updating in related technologies is solved, the technical problem that the application program fault repairing efficiency is low in the related technologies is solved, the application program repairing speed is increased, the repairing efficiency is improved, and the user experience is improved.

The invention discloses an abnormal file restoration method, device and equipment and a storage medium, and the method comprises the steps: obtaining the file structure information corresponding to a to-be-detected file, and searching a preset abnormal rule library for whether there is a target abnormal rule matched with the file structure information or not; and when the target exception rule exists, judging that the to-be-detected file is an exception file, obtaining a file repair algorithm corresponding to the target exception rule, and repairing the to-be-detected file according to the file repair algorithm. Compared with the existing mode of identifying or detecting the abnormal file through the feature code and repairing the file by searching the corresponding health file or the address information of the health file in the file database, the method, device and equipment have the advantages that whether the to-be-detected file triggers the abnormal rule or not is judged through the file structure information, and if yes, the to-be-detected file is judged to be abnormal; and the corresponding file repair algorithm is obtained according to the triggered exception rule to repair the file, so that the accuracy of exception identification is ensured, and the file repair rate is also improved.

The embodiment of the invention discloses a file processing method and device, equipment and a medium. The method comprises the steps of reading to-be-processed data from a to-be-processed file, wherein a value of a file cavity in the to-be-processed data is a preset numerical value; if the values of the to-be-processed data are all the preset values, deleting the to-be-processed data from the to-be-processed file to obtain a new to-be-processed file; comparing the disk usage amount of the to-be-processed file with the disk usage amount of the new to-be-processed file, and repairing the file according to a comparison result. By adopting the scheme of the embodiment, the file hole of the to-be-processed file can be deleted as much as possible through the comparison result, so when the to-be-processed file needs to be repaired, the reserved data is directly used for repairing, and the file hole does not need to be filled with a large amount of '0' data when the data is written; therefore, the data volume during file repair is reduced, and the transmission overhead of remote transmission data during file repair between nodes in the distributed storage system is reduced.

The invention relates to a file restoration method and device, electronic equipment and a storage medium, and belongs to the technical field of file storage. The method comprises the following steps:if it is detected that the file system fails to acquire any target file, obtaining a file identifier of the target file in the parent file and file information of the parent file, such as the file identifier; performing querying from a file system according to the information to obtain first metadata of the target file; obtaining description information of a storage position of the target file inthe file system from the first metadata, obtaining a target file from a file system according to the description information of the storage position, and repairing the target file according to the acquisition result. Thus, when the file system fails to acquire any target file, the target file is directly repaired, metadata of all files in the file system does not need to be repaired, and the number of the files needing to be repaired is greatly reduced, so that the repair time can be shortened, and the influence on related services is reduced.

The invention discloses a malicious file repairing method. The method comprises the following steps: extracting file characteristics of the malicious file, wherein the file features comprise file attributes and family public feature strings, the file attributes comprise any one or a combination of any more of file size, node number and node authority, and the family public feature strings comprise any one or a combination of any more of file offset addresses, entry point offset addresses and node offset addresses; determining a target infectious virus family corresponding to the malicious file according to the file characteristics; and executing a file repair operation corresponding to the target infectious virus family on the malicious file. The method can accurately identify the virus family corresponding to the malicious file and improve the repair efficiency of the malicious file. The invention further discloses a malicious file repairing device, electronic equipment and a storage medium, which have the above beneficial effects.

The invention discloses an image file restoration method. The method comprises the steps of obtaining damage information of an image file; selecting a sample file according to the damage information;and extracting an offset code corresponding to the damage information in the sample file, and performing code repair on the image file according to the offset code. The sample file is selected according to damage information; and an offset code corresponding to the damage information is extracted in the sample file, and code repair is performed on the image file according to the offset code, thereby realizing repair of the image file.

The invention discloses an application program self-repairing method, device and equipment and a storage medium, and the method comprises the steps: obtaining abnormal information generated by a front-end component, the abnormal information comprising abnormal type information and abnormal position information; reading a target file pointed by the abnormal position information; obtaining a corresponding grammar analysis matcher according to the abnormal type information; analyzing the target file based on the grammatical analysis matcher and the abnormal position information to obtain a target abnormal code segment; repairing the target abnormal code segment according to the abnormal type information to obtain a patch file; and repairing the front-end component based on the patch file. According to the method, device and equipment, abnormal positioning and abnormal correction can be automatically carried out on the front-end component, the front-end component is repaired in a patch file mode, manual participation is not needed, full-automatic implementation can be achieved, interaction with the server is not forcibly needed, the repairing speed can be remarkably increased, and the labor cost and the communication cost can be reduced.

The invention discloses a Linux file system repairing method, system and device and a storage medium, and the method comprises the steps: newly adding an input and output control interface in a kernel, and then obtaining file parameters in a to-be-repaired disk through the input and output control interface. Opening the to-be-repaired disk, determining a to-be-repaired file in the to-be-repaired disk according to preset file repair conditions and file parameters, and verifying metadata information of the to-be-repaired file; when the verification is abnormal, calling a repair tool to repair the to-be-repaired file; and after the repair is completed, writing the to-be-repaired disk, and closing the to-be-repaired disk after the writing is completed. According to the file system repairing method provided by the embodiment of the invention, all files in the system do not need to be traversed, and the file needing to be repaired can be determined according to the preset file repairing condition, so that the time consumption of the repairing process is reduced, and rapid repairing is realized.

The invention discloses an application exception processing method and electronic equipment, and belongs to the technical field of communication. The application exception processing method comprises the steps that a first basic file causing operation exception of a first application is determined, and the first basic file corresponding to the first application is in an exception state; according to the first basic file, at least one second application associated with the first application is determined, a second basic file corresponding to the second application is the same as a file identifier of the first basic file, and based on the second basic file and the first basic file which have the same file identifier, the first application and the second application are associated with each other. The association relationship is established between the second application and the first application; according to the second basic file corresponding to a second target application, the first application is repaired, and the second target application is one normally-running second application in the at least one second application.

The embodiment of the invention provides a patch upgrading method and device, electronic equipment and a storage medium. The method comprises the steps of obtaining a system patch upgrade package, wherein the system patch upgrade package comprises a preprocessing compressed package and a component upgrade compressed package which have the same compressed package format; decompressing the preprocessing compressed packet, and judging whether preprocessing operation before patch upgrading needs to be carried out or not; if the preprocessing operation needs to be carried out, obtaining a componentrepair file from the preprocessing package, and repairing a corresponding abnormal component in a to-be-upgraded system patch according to the component repair file; and after the repair is completed, decompressing the component upgrading package, obtaining all component upgrading files corresponding to the to-be-upgraded system patch, and upgrading the to-be-upgraded system patch according to all the component upgrading files. According to the embodiment of the invention, the released patch version can be compatibly repaired, the problem of overlong network disconnection time caused by upgrading of a large version is avoided, and the patch upgrading efficiency is improved.

Disclosed are a file repair method and a file repair device for user equipment (UE), the UE receiving a multicast target file at a network side in a file download transmission (FDT) mode, the method comprising: after determining that the target file needs to be repaired, the UE sending a multicast repair tentative request of the target file to the network side in a first time period, the first time period does not exceed the time period of Back-off time of the current session; the UE receives a feedback message sent by the network side, wherein the feedback message is used for indicating the UE to perform multicast repair indication; and the UE performs multicast repair on the target file according to the received feedback message.