File System Filter Implementation (Windows CE 5.0)
When the Storage Manager loads a file system filter, it calls the entry point FSD_HookVolume with the first parameter, which is an HDSK structure that the filter can use to call back into the Storage Manager. For more information, see Storage Manager. The second parameter is the FILTERHOOK structure. The hVolume member is the handle to the previous volume, that is, the volume below the current volume on the filter stack. The value of hVolume is either another filter or the file system itself. The file system filter should use this handle to call the underlying filter or the file system using the function pointers in the FILTERHOOK structure.
When the Storage Manager unloads a file system filter, it calls FSD_UnhookVolume.
See Also
File System Filters | File System Filter Samples | Partition Driver | Partition Manager
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