Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!uunet!husc6!rutgers!labrea!decwrl!sun!guy
From: guy@sun.uucp (Guy Harris)
Newsgroups: comp.unix.xenix,comp.sources.wanted,comp.unix.questions
Subject: Re: tty watcher
Message-ID: <27909@sun.uucp>
Date: Mon, 14-Sep-87 14:55:01 EDT
Article-I.D.: sun.27909
Posted: Mon Sep 14 14:55:01 1987
Date-Received: Tue, 15-Sep-87 07:14:03 EDT
References: <4263@ozdaltx.UUCP> <15136@hi.UUCP> <1178@mtune.ATT.COM> <18247@amdcad.AMD.COM>
Organization: Sun Microsystems, Inc. - Mtn View, CA
Lines: 16
Xref: mnetor comp.unix.xenix:735 comp.sources.wanted:2247 comp.unix.questions:4070

> What about a new getty which, instead of exec'ing the user's shell,
> forks the shell with a pseudo-tty as a terminal, then "watches" the real
> terminal, sending the characters received & sent both to the pseudo-tty
> as well as to the snooper?  That wouldn't involve hacking the kernal at
> all.

Unless, of course, your kernel lacks pseudo-ttys....

This also requires you to hack "getty", although you could have the
pseudo-"getty" set up the pseudo-tty and run the real "getty" immediately,
thus obviating the need to duplicate all of "getty"'s functionality (painful
to do without source).
-- 
	Guy Harris
	{ihnp4, decvax, seismo, decwrl, ...}!sun!guy
	guy@sun.com (or guy@sun.arpa)