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From: jkp@cs.HUT.FI (Jyrki Kuoppala)
Newsgroups: comp.unix.wizards,alt.security
Subject: Re: BSD tty security, part 4: What You Can Look Forward To
Message-ID: <1991May5.125240.6222@santra.uucp>
Date: 5 May 91 12:52:40 GMT
References: <13266@goofy.Apple.COM> <7363:May202:45:0591@kramden.acf.nyu.edu> <1991May03.010840.5268@decuac.dec.com> <438@pharaoh.UUCP>
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Reply-To: jkp@cs.HUT.FI (Jyrki Kuoppala)
Followup-To: comp.unix.wizards
Organization: Helsinki University of Technology, Finland
Lines: 16
In-Reply-To: ian@pharaoh.UUCP (Ian Crocker)

In article <438@pharaoh.UUCP>, ian@pharaoh (Ian Crocker) writes:
[TIOCNOTTY]
>However when you try and do the TIOCSTI it fails on
>all the systems I have tried it on because you are not the owner of the
>device. I know that the manual says it should work as you are trying
>to do the ioctl on your control terminal, but this is not the case on my
>systems - you have to own the device or have an euid of 0.

Hmm, I haven't checked lately and am not sure if I remember it
correctly but are you sure after attaching to another tty you did open
("/dev/tty", O_RDWR) and then the TIOCSTI on that file descriptor ?

That worked on a pretty generic bsd 4.3 system at least a couple of
years ago.

//Jyrki