Filter driver for identifying disk files by analysis of content

Details Filter driver for identifying disk files by analysis of content Filter driver for identifying disk files by analysis of content

2006-04-04

2006-04-04

Rones, Charles (Department: 2164)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C709S224000

Reexamination Certificate

active

07024403

ABSTRACT:
A system and method for excluding certain types of files from being saved to a system by examining file data. The file data is examined by: mapping the circular queue to memory; reading the file identifiers from the circular queue (a named mutex is locked until all file identifiers have been read from the queue); using the file identifier to open the file; scanning the opened file to create a file signature; comparing the file signature to each entry on a list of signature criteria; and performing a storage policy if there is a match.

REFERENCES:
patent: 5757915 (1998-05-01), Aucsmith et al.
patent: 5805719 (1998-09-01), Pare, Jr. et al.
patent: 5864870 (1999-01-01), Guck
patent: 5983270 (1999-11-01), Abraham et al.
patent: 6449615 (2002-09-01), Liu et al.

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