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From: ast@cs.vu.nl (Andy Tanenbaum)
Newsgroups: comp.os.minix
Subject: Re: Non-blocking read() on /dev/ttys [question]
Keywords: PC Minix 1.5.10
Message-ID: <10204@star.cs.vu.nl>
Date: 16 Jun 91 19:25:20 GMT
References: <9106143865@wiesje.hobby.nl>
Sender: news@cs.vu.nl
Organization: Fac. Wiskunde & Informatica, Vrije Universiteit, Amsterdam
Lines: 14

In article <9106143865@wiesje.hobby.nl> baron@wiesje.hobby.nl (Wim `Blue Baron' van Dorst) writes:
>Theorem: Although it is suggested by various things that non-blocking 
>	 read()s on /dev/tty?s are available in PC Minix 1.5.10, they 
>	 are not completely implemented.
>
>Could a knowledgeable person please comment on my theorem? Will upgrading
>to 1.6.16 (full blown Posix) solve the problem?

I believe 1.6.16 is somewhat further along on O_NONBLOCK.  The ultimate
goal, of course, if POSIX P1003.1 compliance, but this is not yet achieved.
In particular, the tty driver has not yet been tackled.


Andy Tanenbaum (ast@cs.vu.nl)