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From: brian@ncrcan.UUCP (Brian Onn)
Newsgroups: comp.lang.c
Subject: Re: Perror complication
Message-ID: <301@ncrcan.UUCP>
Date: Mon, 24-Aug-87 12:12:41 EDT
Article-I.D.: ncrcan.301
Posted: Mon Aug 24 12:12:41 1987
Date-Received: Tue, 25-Aug-87 07:15:22 EDT
References: <8913@brl-adm.ARPA> <8048@mimsy.UUCP> <18005@amdcad.AMD.COM>
Reply-To: brian@ncrcan.UUCP ()
Organization: NCR Canada Ltd., Mississauga, Ontario
Lines: 8

In article <18005@amdcad.AMD.COM> rpw3@amdcad.UUCP (Rob Warnock) writes:
>This bypasses problems with syscalls that can return "-1" as a valid successful
>result, such as "nice()", and also avoids the "Not a typewriter" syndrome.

Sorry if this has been hashed here before. but what is this syndrome?  I 
remember working with a guy who was writing some code, and he kept complaining
that after his system calls, errno was being set to 25 (ENOTTY).  I beleive
this is what you are talking about, but what causes it?