Runtime library including a virtual file system

• US 8,627,269 B2
• Filed: 06/10/2011
• Issued: 01/07/2014
• Est. Priority Date: 08/29/2006
• Status: Active Grant

• Current Assignee: Adobe Inc.
• Original Assignee: Adobe Systems Incorporated (Adobe Inc.)
• Inventors: Malasky, Ethan, Goldman, Oliver
• Primary Examiner(s): Khatri, Anil
• Application Number:
  US13/157,868
• Publication Number:
  US 20130167104A1
• Time in Patent Office: 942 Days
• Field of Search: 717120-121, 717129-130, 717100-104
• US Class Current: 717/100
• CPC Class Codes: G06F 9/455 Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines

Abstract

This specification describes technologies relating to a runtime library including a virtual file system. In general, a method can include interfacing with an operating system of a computer; and providing runtime services, including a virtual file system, to programs running on the computer. Providing runtime services can include receiving first information and second information through a single file access routine of an API for the virtual file system; determining a selected one of multiple file storage areas to access based on the first information, the multiple file storage areas including a first local area accessible by a first program and inaccessible by a second program, and a second area accessible by the first program and the second program; mapping the second information to file resource(s) in the selected file storage area in the virtual file system; and accessing the one or more file resources for the first program.

Claims

1. A method implemented on a computer, the method comprising:

providing runtime services, including a virtual file system, to a first program running on the computer and a second program running on the computer, providing the runtime services comprising;

receiving, from the first program, first information and second information through a single file access routine of an application program interface (API) for the virtual file system;

determining one of multiple file storage areas to access based on the first information, the multiple file storage areas including a first area and a second area, the first area being local to the computer and accessible by the first program through the virtual file system, the first area further being inaccessible by the second program through the virtual file system, the second area being accessible by the first program and the second program through the virtual file system;

mapping the second information to one or more file resources in the determined file storage area in the virtual file system; and

accessing the one or more file resources for the first program.

2. The method of claim 1, wherein providing the runtime services further comprises authenticating the first program based at least in part on an identifier associated with the first program.

3. The method of claim 2, wherein the first information comprises the identifier.

4. The method of claim 2, wherein the second area is remote from the computer and accessible over a communication network.

5. The method of claim 2, wherein the authenticating comprises checking a digital signature for the first program.

6. The method of claim 5, wherein the checking comprises:

checking a first digital signature of the identifier; and

checking a second digital signature of the first program;

wherein the first and second digital signatures are created by a common private key.

7. The method of claim 1, wherein receiving the first information and the second information comprises receiving a character string through the single file access routine of the API for the virtual file system, the character string comprising the first information and the second information.

8. The method of claim 7, wherein the character string conforms to a Universal Resource Identifiers (URI) specification used for network communications.

9. A computer program product, encoded on a computer-readable storage medium, operable to cause data processing apparatus to perform operations comprising:

providing runtime services, including a virtual file system, to a first program running on a computer and a second program running on the computer, providing the runtime services comprising;

receiving, from the first program, first information and second information through a single file access routine of an application program interface (API) for the virtual file system;

determining one of multiple file storage areas to access based on the first information, the multiple file storage areas including a first area and a second area, the first area being local to the computer and accessible by the first program through the virtual file system, the first area further being inaccessible by the second program through the virtual file system, the second area being accessible by the first program and the second program through the virtual file system;

mapping the second information to one or more file resources in the determined file storage area in the virtual file system; and

accessing the one or more file resources for the first program.

10. The computer program product of claim 9, wherein providing the runtime services further comprises authenticating the first program based at least in part on an identifier associated with the first program.

11. The computer program product of claim 10, wherein the first information comprises the identifier.

12. The computer program product of claim 10, wherein the second area is remote from the computer and accessible over a communication network.

13. The computer program product of claim 10, wherein the authenticating comprises checking a digital signature for the first program.

14. The computer program product of claim 13, wherein the checking comprises:

checking a first digital signature of the identifier; and

checking a second digital signature of the first program;

wherein the first and second digital signatures are created by a common private key.

15. The computer program product of claim 9, wherein receiving the first information and the second information comprises receiving a character string through the single file access routine of the API for the virtual file system, the character string comprising the first information and the second information.

16. The computer program product of claim 15, wherein the character string conforms to a Universal Resource Identifiers (URI) specification used for network communications.

17. A system comprising:

a processor;

local storage coupled with the processor; and

an operating system configured to facilitate access to the processor and the local storage to implement a runtime library configured to;

provide runtime services, including a virtual file system, to a first program running on the processor and a second program running on the processor;

include an application program interface (API) for the virtual file system that enables first information and second information to be received from the first program through a single file access routine of the API for the virtual file system;

determine one of multiple file storage areas to access based on the first information, the multiple file storage areas including a first area and a second area, the first area being in the local storage and accessible by the first program through the virtual file system, the first area further being inaccessible by the second program through the virtual file system, the second area being accessible by the first program and the second program through the virtual file system;

map the second information to one or more file resources in the determined file storage area in the virtual file system; and

access the one or more file resources for the first program.

18. The system of claim 17, wherein the runtime library is further configured to authenticate the first program based at least in part on an identifier associated with the first program.

19. The system of claim 18, wherein the first information comprises the identifier.

20. The system of claim 18, further comprising an interface device to connect to a communication network, wherein the second area is remote from the processor and accessible over the communication network.

21. The system of claim 18, wherein the runtime library is further configured to authenticate the first program by checking a digital signature for the first program.

22. The system of claim 21, wherein the runtime library is further configured to check a first digital signature of the identifier and a second digital signature of the first program;

wherein the first and second digital signatures are created by a common private key.

23. The system of claim 17, wherein the runtime library is further configured to receive a character string through the single file access routine of the API for the virtual file system, the character string comprising the first information and the second information.

24. The system of claim 23, wherein the character string conforms to a Universal Resource Identifiers (URI) specification used for network communications.