Data processing: database and file management or data structures – Database design – Data structure types
Patent
1996-07-03
1998-10-27
Black, Thomas G.
Data processing: database and file management or data structures
Database design
Data structure types
707200, 707205, G06F 1730
Patent
active
058290052
ABSTRACT:
Apparatus and programmed method is disclosed, providing for the creation of a circular file of use in conjunction with the UNIX.TM. operating system or other layered and modular operating system architectures. The circular file uses an inode field to identify the file as circular and writes fill data to the file to allocate physical blocks to the file at the time of its creation. Thereafter, blocks already allocated to the file are re-allocated when more file space is needed and the file size does not increase.
REFERENCES:
patent: 5023832 (1991-06-01), Fulcher, Jr. et al.
patent: 5623654 (1997-04-01), Peterman
patent: 5636360 (1997-06-01), Courts et al.
Leffler, McKusick, Karels, Quarterman, The Design and Implementation of the 4.3BSD UNIX Operating System, Addison-Wesley Publishing Company, Inc., Ch. 6, "I/O System Overview," pp. 169-186, and Ch. 7, The Filesystem, pp. 187-223, 1989.
Leffler, Samuel J.; McKusick Marshall Kirk; Karels, Michael J.; Quarterman, John S.; The Design and Implementation of the 4.3BSD UNIX Operating System, Chapters 6 and 7, Addison-Wesley Publishing Company, 1989.
Black Thomas G.
Knearl Homer L.
Min Donald
Sirr F. A.
Sun Microsystems Inc.
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