Selectively modifying files of a container file
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United States of America Patent
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Nov 27, 2012
Grant Date -
Oct 29, 2009
app pub date -
Apr 28, 2008
filing date -
Apr 28, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A stub directory is written out to a storage device for multiple files in a container file, the stub directory including identifiers of the multiple files but excluding data of the multiple files. In response to a request to access one file of the multiple files, the data of the one file is written out to the storage device. A requested modification is allowed to be performed on the one file written out to the storage device to generate a modified version of the file. After modification of the one file is completed, a previous version of the file in the container file is replaced with the modified version of the file.
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