Managed file system filter model and architecture

Details Managed file system filter model and architecture Managed file system filter model and architecture

2006-01-31

2006-01-31

Huynh, Kim (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output data buffering

C710S005000, C710S052000, C709S220000, C709S223000, C707S793000, C707S793000, C707S793000

Reexamination Certificate

active

06993603

ABSTRACT:
A model in which filter drivers are managed to receive callbacks for I/O requests in which the filter drivers have registered an interest. Per-volume instances of filter drivers register with a filter manager for pre-callbacks (for I/O to the file system) and post-callbacks (for I/O from the file system), and identify which I/O requests (e.g., create, read, write) they are registering to receive callbacks. The filter manager orders the instances for callbacks. When an I/O request is received, the filter manager converts the I/O request to callback data and calls the interested filters in the callback order, whereby the filter instances can process the I/O data. As the request returns from the file system, filters desiring post callbacks are called in the reverse order. Efficient context management for the filters and other functions, such as non-reentrant file I/O, are also provided by the model.

REFERENCES:
patent: 6363400 (2002-03-01), Chtchetkine et al.
patent: 6389427 (2002-05-01), Faulkner
patent: 6611863 (2003-08-01), Banginwar

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