File access method, communication system, and electronic device

Patent metadata

Field	Value
Publication number	US-12450335-B2
Application number	US-202318467015-A
Country	US
Kind code	B2
Filing date	Sep 14, 2023
Priority date	Mar 17, 2021
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

The present disclosure relates to file access methods. In one example method, a first electronic device receives a trigger operation performed by a user on a sandbox file in a shared interface sent by a second electronic device, and sends an access request to the second electronic device. The second electronic device receives the access request, and determines mapping information corresponding to the sandbox file based on the access request, where the mapping information includes a mapping file corresponding to the sandbox file, a path of the mapping file, and a correspondence between the path of the mapping file and file index information of the sandbox file. The second electronic device sends the mapping information to the first electronic device. The first electronic device receives the mapping information, and may directly access the sandbox file based on the mapping information.

First claim

What is claimed is:

1. A file access method, comprises:
displaying, by a first electronic device, a shared interface sent by a second electronic device that establishes a communication connection to the first electronic device, wherein the shared interface comprises a sandbox file corresponding to an application of the second electronic device;
receiving, by the first electronic device, a trigger operation performed by a user on the sandbox file;
sending, by the first electronic device, an access request to the second electronic device;
receiving, by the first electronic device, mapping information sent by the second electronic device; and
accessing, by the first electronic device, the sandbox file based on the mapping information, wherein the mapping information corresponds to the sandbox file and is determined by the second electronic device based on the access request, and the mapping information comprises a mapping file corresponding to the sandbox file, a path of the mapping file, and a correspondence between the path of the mapping file and file index information of the sandbox file.

2. The file access method according to claim 1 , wherein accessing, by the first electronic device, the sandbox file based on the mapping information comprises:
determining, by the first electronic device, the mapping file and the file index information based on the path of the mapping file; and
accessing, by the first electronic device, the sandbox file based on the mapping file and the file index information.

3. The file access method according to claim 1 , wherein the mapping file is a soft link file, and the mapping file comprises location information of the sandbox file.

4. The file access method according to claim 1 , wherein the file index information is a file descriptor.

5. The file access method according to claim 1 , wherein the access request comprises operation type information and operation area information corresponding to the trigger operation.

6. A file access method, comprising:
receiving, by a second electronic device, an access request sent by a first electronic device that establishes a communication connection to the second electronic device;
determining, by the second electronic device based on the access request, mapping information corresponding to a sandbox file that the first electronic device requests to access, wherein the mapping information comprises a mapping file corresponding to the sandbox file, a path of the mapping file, and a correspondence between the path of the mapping file and file index information of the sandbox file, the access request is generated by receiving a trigger operation performed by a user on the sandbox file, and the sandbox file corresponds to an application of the second electronic device and is comprised in a shared interface that is sent by the second electronic device and displayed by the first electronic device; and
sending, by the second electronic device, the mapping information to the first electronic device, wherein the first electronic device accesses the sandbox file based on the mapping information.

7. The file access method according to claim 6 , wherein determining, by the second electronic device based on the access request, the mapping information corresponding to the sandbox file comprises:
determining, by the second electronic device, the sandbox file based on the access request;
determining, by the second electronic device, a uniform resource identifier corresponding to the sandbox file;
determining, by the second electronic device based on the uniform resource identifier, the file index information corresponding to the uniform resource identifier; and
determining, by the second electronic device, the mapping information based on the uniform resource identifier and the file index information.

8. The file access method according to claim 6 , wherein the mapping file is a soft link file, and the mapping file comprises location information of the sandbox file.

9. The file access method according to claim 6 , wherein the file index information is a file descriptor.

10. The file access method according to claim 6 , wherein the access request comprises operation type information and operation area information corresponding to the trigger operation.

11. A first electronic device, comprising:
at least one processor; and
at least one memory coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the first electronic device to perform operations comprising:
displaying a shared interface sent by a second electronic device that establishes a communication connection to the first electronic device, wherein the shared interface comprises a sandbox file corresponding to an application of the second electronic device;
receiving a trigger operation performed by a user on the sandbox file;
sending an access request to the second electronic device;
receiving mapping information sent by the second electronic device; and
accessing the sandbox file based on the mapping information, wherein the mapping information corresponds to the sandbox file and is determined by the second electronic device based on the access request, and the mapping information comprises a mapping file corresponding to the sandbox file, a path of the mapping file, and a correspondence between the path of the mapping file and file index information of the sandbox file.

12. The first electronic device according to claim 11 , wherein the operations comprise:
determining the mapping file and the file index information based on the path of the mapping file; and
accessing the sandbox file based on the mapping file and the file index information.

13. The first electronic device according to claim 11 , wherein the mapping file is a soft link file, and the mapping file comprises location information of the sandbox file.

14. The first electronic device according to claim 11 , wherein the file index information is a file descriptor.

15. The first electronic device according to claim 11 , wherein the access request comprises operation type information and operation area information corresponding to the trigger operation.

Assignees

• Huawei Tech Co Ltd

Inventors

• Lu Chao

Classifications

• G06F21/6209

  to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself · CPC title

• G06F16/176

  Support for shared access to files; File sharing support · CPC title

• G06F16/13

  File access structures, e.g. distributed indices (arrangements of input from, or output to, record carriers G06F3/06) · CPC title

• G06F21/53 Primary

  by executing in a restricted environment, e.g. sandbox or secure virtual machine · CPC title

• G06F16/134 Primary

  Distributed indices · CPC title