Method and apparatus for providing virtual namespaces for active computing environments

• US 7,206,819 B2
• Filed: 01/18/2001
• Issued: 04/17/2007
• Est. Priority Date: 01/18/2001
• Status: Expired due to Term

• Current Assignee: Oracle America, Inc. (Oracle Corporation)
• Original Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Inventors: Schmidt, Brian Keith
• Primary Examiner(s): Dharia; Rupal
• Assistant Examiner(s): Nguyen; Quang N.
• Application Number:
  US09/765,879
• Publication Number:
  US 20020095479A1
• Time in Patent Office: 2,280 Days
• Field of Search: 709223-225, 709/245, 709/202, 709/203, 709/213, 709/226, 370/389
• US Class Current: 709/214
• CPC Class Codes: G06F 16/192 Implementing virtual folder structures

Abstract

The present invention provides private namespaces for active computing environments. The invention uses one or more “compute capsules”. A compute capsule is a private, portable, persistent environment. Each compute capsule comprises an arbitrary set of active processes and their associated state information. In one embodiment, compute capsules provide a private, customizable view of a shared file system, so that users can modify arbitrary files without the expense of providing each person with a separate and complete file system image. In one embodiment, the invention provides environments with different personalities, each of which can be contained within a capsule. For example, a user can have one capsule for normal desktop usage, a fail-safe capsule with a minimal environment and no external dependencies, capsules for work-related and personal activities, etc. In one embodiment, capsules are given access rights.

Claims

1. A method for providing a virtual namespace for a compute capsule, comprising:

mapping a shared file system into the virtual namespace to create a file system view, the file system view supplying the compute capsule with a private view of a portion of the shared file system;

assigning a virtual token to a resource within the compute capsule, the resource being of the underlying machine and capable of being named by the compute capsule, the compute capsule being configured to provide an encapsulated form that is capable of being moved between computers without restriction, the computers being associated with different physical devices;

interposing a name translator between the resource and the compute capsule;

binding the resource to the virtual token with a name translation table persistently stored within the compute capsule; and

translating the virtual token into the resource using the name translator, if the compute capsule names the resource, wherein the translating is transparent to both an operating system and any application running on the underlying machine, and

wherein the mapping the shared file system into the virtual namespace includes mapping the shared file system into the virtual namespace based on default mappings and custom mappings.

2. The method of claim 1, wherein the name translation table provides transparent mobility of a computing environment by being mapped to new machine-local values if the compute capsule is moved to another host.

3. The method of claim 1, wherein the virtual token is only identifiable from within the compute capsule.

4. The method of claim 1, further comprising:

controlling access to the compute capsule.

5. The method of claim 1, wherein the compute capsule encapsulates an active computing environment.

6. The method of claim 5, wherein the active computing environment includes one or more processes and state information that allows the compute capsule to be suspended and revived on a binary compatible machine.

7. The method of claim 1, wherein the resource is defined by one or more of a file, a processor, a memory, and an attached device.

8. The method of claim 1, wherein the compute capsule is configured to communicate with processes outside the compute capsule through Internet sockets and globally shared files.

9. The method of claim 1, wherein the compute capsule is configured to provide an encapsulated form that is independent of configuration settings of a host system.

10. A virtual namespace for a compute capsule, comprising:

a file system view being created by mapping a shared file system into the virtual name space, the file system view supplying the compute capsule with a private view of a portion of the shared file system;

a virtual token configured to represent a resource within the compute capsule, the resource not being shared with other compute capsules, the resource being of the underlying machine and capable of being named by the compute capsule, the compute capsule being configured to provide an encapsulated form that is capable of being moved between computers without restriction, the computers being associated with different physical devices;

a binder configured to bind the resource to the virtual token; and

a name translator configured to be interposed between the resource and the compute capsule, the name translator configured to translate the virtual token into the resource, if the compute capsule names the resource, wherein translation through the name translator is transparent to both an operating system and any application running on the underlying machine, and

wherein the mapping the shared file system into the virtual namespace includes mapping the shared file system into the virtual namespace based on default mappings and custom mappings.

11. The virtual namespace of claim 10, wherein the binder provides transparent mobility of a computing environment by being mapped to new machine-local values if the compute capsule is moved to another host.

12. The virtual namespace of claim 11, wherein the binder is a name translation table.

13. The virtual namespace of claim 10, wherein the virtual token is only identifiable from within the compute capsule.

14. The virtual namespace of claim 10, further comprising:

an access control list for controlling access to the compute capsule.

15. A computer-readable storage media for directing a computer to create a virtual namespace for a compute capsule, the computer-readable storage media comprising:

instructions for creating a file system view in the virtual namespace by mapping a shared file system into the virtual name space, wherein the file system view provides the compute capsule with a private view of a portion of the shared file system;

instructions for assigning a virtual token to a resource within the compute capsule, the resource being of the underlying machine and capable of being named by the compute capsule, the compute capsule being configured to provide an encapsulated form that is capable of being moved between computers without restriction, the computers associated with different physical devices;

instructions for interposing a name translator between the resource and the compute capsule;

instructions for binding the resource to the virtual token with a name translation table persistently stored within the compute capsule; and

instructions for translating the virtual token into the resource using the name translator, if the compute capsule names the resource, wherein translation is transparent to both an operating system and any application running on the underlying machine, and

wherein the mapping the shared file system into the virtual namespace includes mapping the shared file system into the virtual namespace based on default mappings and custom mappings.

16. The computer-readable storage media of claim 15, wherein the name translation table provides transparent mobility of a computing environment by being mapped to new machine-local values if the compute capsule is moved to another host.

17. The computer-readable storage media of claim 15, wherein the virtual token is only identifiable from within the compute capsule.

18. The computer-readable storage media of claim 15, further comprising:

instructions for controlling access to the compute capsule.