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From: alvitar@madhat.UUCP (Phil Harbison)
Newsgroups: comp.unix.xenix,comp.sources.wanted,comp.unix.questions
Subject: Re: tty watcher
Message-ID: <245@madhat.UUCP>
Date: Fri, 11-Sep-87 20:16:00 EDT
Article-I.D.: madhat.245
Posted: Fri Sep 11 20:16:00 1987
Date-Received: Sun, 13-Sep-87 21:38:14 EDT
References: <4263@ozdaltx.UUCP> <249@spdcc.COM>
Organization: DataVision, Huntsville AL
Lines: 20
Xref: mnetor comp.unix.xenix:730 comp.sources.wanted:2236 comp.unix.questions:4049

In article <249@spdcc.COM>, dyer@spdcc.COM (Steve Dyer) writes:
> It seems to me that you might be able to hack something up with a
> new line discipline which paralleled the normal tty line discipline
> with the exception that it replaced the l_input routine with one which,
> before calling the standard l_input routine, enqueued its characters
> on a private clist of a special device...

This  is similar to my implementation of a journal feature on a piece of
UNIX-based  test equipment at Boeing.  The Air Force wanted a journal of
every  keystroke  (before  input  processing)  so they could study human
factors and write better user interfaces.  Each character was put in the
raw  queue  and  a  copy was also placed in a clist owned by the journal
driver if /dev/journal was open.  This would be a trivial hack to almost
any tty driver.

-- 
Live: Phil Harbison
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