John Polstra fba3cfdef2 Fix bug: a read() on a bpf device which was in non-blocking mode
and had no data available returned 0.  Now it returns -1 with errno
set to EWOULDBLOCK (== EAGAIN) as it should.  This fix makes the bpf
device usable in threaded programs.

Reviewed by:	bde
2000-12-17 20:50:22 +00:00
..