Xref: utzoo comp.unix.wizards:6447 comp.unix.questions:5494
Path: utzoo!utgpu!water!watmath!watvlsi!watale!watmelon
From: watmelon@watale.waterloo.edu (Mech. Eng. Robotics Group)
Newsgroups: comp.unix.wizards,comp.unix.questions
Subject: A Question Concerning Device Drivers
Keywords: ?
Message-ID: <2879@watale.waterloo.edu>
Date: 10 Feb 88 17:02:54 GMT
Distribution: na
Organization: Automation Lab, U of Waterloo Mech Eng, Ont, Can
Lines: 5

In System V, is the cpass/passc combination the only way to pass data
between a user's buffer and a character driver?
It seems to be a bit of a waste of time to copy data one character at a time
when you could probably do some kind of block copy.
Are there other ways of passing the data?