Does "ecryptfs" support direct I/O? In general, how can a "stackable" file system, that modifies buffer provided by user support direct I/O?
Using direct IO with ecryptfs and similar stackable file systems
734 Views Asked by ghostkadost At
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VolatileDream
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I haven't looked into this much, but I would personally use a decorator pattern for the file system drivers, so that ecryptfs sits on top of any of the actual device drivers. Then when calls are made, they go into ecryptfs code, then ecryptfs calls the device drivers and does the writing.
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ecryptfs does not support direct I/O.
There is no implementation of direct_IO() callback in ecryptfs address_space_operations.