A Computer System with File Attribute Extension
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United States of America Patent
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N/A
Issued Date -
Oct 25, 2007
app pub date -
Apr 20, 2006
filing date -
Apr 20, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A computer OS with an extended file attribute (EFA) is proposed to extend, without modifying a legacy virtual file system, the legacy file attribute of legacy files where each legacy file includes a file content and a legacy file attribute. The OS has a file attribute extension mechanism for adding EFA to the legacy file attribute. The file attribute extension mechanism includes: a) During EFA creation, adding EFA to legacy file attribute by concatenating an encoded file content extension to the file content. b) During EFA access, decoding the encoded file content extension and accessing the EFA. Also included is an Application Programming Interface (API) mechanism for generating system call to access each file. In turn, the system call firstly calls the legacy virtual file system to access each file plus legacy file attribute and concatenated encoded file content extension, and secondly accesses EFA via the file attribute extension mechanism.
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