05313646 is referenced by 245 patents and cites 9 patents.

In a computer system having a hierarchical file structure, a file system is provided which permits users of the system to share a file hierarchy and also have a private hierarchy in which files are automatically copied to as they are modified. Through the system of the present invention, a directory appears to the user as a single directory but may actually comprise files originating from a number of directories which are connected to one another through search links. Each directory has a search link associated with it which contains the path name of the back layer or directory behind it. The first layer seen through the system of the present invention is the front layer, private to the user. The back layers behind the front layer and connected to the front layer through the search links are shared layers accessible to multiple users. Thus transparent to the user of the directory accessible comprises multiple layers comprising shared and private files. The system further provides a copy-on-write feature which protects the integrity of the shared files by automatically copying a shared file into the users private layer when the user attempts to modify a shared file in a back layer.

Title
Method and apparatus for translucent file system
Application Number
315287
Publication Number
5313646
Application Date
June 10, 1991
Publication Date
May 17, 1994
Inventor
Terrence C Miller
Menlo Park
CA, US
Tom Lyon
Palo Alto
CA, US
Evan Adams
San Leandro
CA, US
David Hendricks
Menlo Park
CA, US
Agent
Erwin J Basinski
Assignee
Sun Microsystems
CA, US
IPC
G06F 15/40
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