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From: nwh@gec-rl-hrc.co.uk (Nigel Holder Marconi)
Newsgroups: net.unix-wizards,net.unix
Subject: which is my login terminal
Message-ID: <34@gec-rl-hrc.co.uk>
Date: Tue, 24-Jun-86 13:27:08 EDT
Article-I.D.: gec-rl-h.34
Posted: Tue Jun 24 13:27:08 1986
Date-Received: Sat, 28-Jun-86 01:02:18 EDT
Organization: GEC Hirst Research Centre, Wembley. U.K.
Lines: 20
Keywords: sun, control terminal
Xref: watmath net.unix-wizards:18608 net.unix:8408


   I have an application that needs to know whether I am logged
on at the console to decide whether I can paint all over the
sun bit-mapped screen.  I could be in suntools, a pty (either via
suntools, remote login or any windowing system), the normal console,
device, or an external port (eg. ttya).  What I really need to know
is whether I actually logged in at the console for this session.
As other people might want to run the application the solution must
be general.  If I'm not on a pty then it is possible to use ttyname().
Otherwise, how is it possible ? (I've thought about finding
out somehow whether my pty and its associated winxx device
are installed in the suntools environment, but haven't pursued it yet).


Nigel Holder			UK JANET:       yf21@uk.co.gec-mrc.u
Marconi Research,		ARPA:           yf21%u.gec-mrc.co.uk@ucl-cs
Chelmsford,
Essex. CM2 8HN.

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