Add a kqueue filter for writing to ufs filesystems which always returns true.  This permits better interoperability with programs which register filters on their stdin/stdout handles.
Add a kqueue filter for writing to ufs filesystems which always returns
true.  This permits better interoperability with programs which register
filters on their stdin/stdout handles.

Submitted by: Niels Provos <provos@citi.umich.edu>

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