> How about a more generalized syscall like move(2) or so that would
> move blocks of data from file descriptor to file descriptor,
> bypassing kernel/user copies in the way of sendfile(2)?

Sounds like the "splice" system call discussed in a USENIX paper from
maybe 3 or 4 years ago, done at (IIRC) SDSC or UCSD by one of Kevin Fall
or Jonathan Kay.

-- 
==John Kohl <jtk@kolvir.arlington.ma.us>, <john_kohl@alum.mit.edu>
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Home page: <http://people.ne.mediaone.net/jtk/>
Note new home zip code as of July 1, 1998: 02476