Xref: utzoo comp.unix.wizards:13521 comp.lang.c:14847
Path: utzoo!censor!becker!bdb
From: bdb@becker.UUCP (Bruce Becker)
Newsgroups: comp.unix.wizards,comp.lang.c
Subject: Re: /dev/tty problem (repost)
Keywords: using rn and several other comp.sources
Message-ID: <176@becker.UUCP>
Date: 17 Dec 88 09:47:41 GMT
References: <373@hrc.UUCP>
Reply-To: bdb@becker.UUCP (Bruce Becker)
Organization: G. T. S., Toronto, Ontario
Lines: 38

In article <373@hrc.UUCP> dan@hrc.UUCP (Dan Troxel VP) writes:
>
>Is there another dev/* that I can use to open the terminal io using rn?
>The error I receive is as follows:
>	Can't open /dev/tty
>	No such device or address
>Specifics:
>	Convergent Tech S/640 running the CTAM 2.00 windowing software

	There is a similar problem in the windowing software for the
	AT&T 3B1 version of CTIX. In that system the problem occurs
	when "/dev/tty" is the internal modem; certain open flags
	determine the state of the opened device (whether data or
	voice use of the phone line in that case). Look in the terminal
	i/o section of the 'rn' source - I don't have it online at the
	moment, but I seem to recall "term" or something as the routine
	in question, in which "/dev/tty" is opened to a new file
	descriptor.  Check to see that 'O_RDONLY' mode doesn't have
	some special meaning for window systems which would be averted
	using 'O_RDWR' or similar.
	Perhaps this isn't the problem, but if it is, it takes some
	detective work (not mine in the 3B1 case) to find out.
	Good luck, in any case - 'rn' is a valuble resource...

>Rn will work fine from a standard shell, but under the windowing application,
>it gives me that above error.
>-- 
>Dan Troxel VP of Computer Operations @ 
>Handwriting Research Corporation - 2821 E. Camelback Road Suite 600
>Phoenix, AZ  85016       WK 1-602-957-8870        HM 1-602-435-1240
>UUCP : asuvax!hrc!dan

Cheers,
-- 
Bruce Becker        Toronto, Ont.
Internet: bdb@becker.UUCP, bruce@gpu.utcs.toronto.edu, becker@ziebmef.UUCP
BitNet:   BECKER@HUMBER.BITNET
"Paranoia is its own reward" - Lyon Bullroarey, honorary American