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From: Andreas Schwab <schwab@suse.de>
To: Theodore Tso <tytso@mit.edu>
Cc: Samuel Thibault <samuel.thibault@ens-lyon.org>,
       Arjan van de Ven <arjan@infradead.org>, linux-kernel@vger.kernel.org
Subject: Re: Linux should define ENOTSUP
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Date: Thu, 07 Dec 2006 15:30:33 +0100
In-Reply-To: <20061207141542.GD31773@thunk.org> (Theodore Tso's message of
	"Thu, 7 Dec 2006 09:15:42 -0500")
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Theodore Tso <tytso@mit.edu> writes:

> On Thu, Dec 07, 2006 at 02:59:48PM +0100, Andreas Schwab wrote:
>> Theodore Tso <tytso@mit.edu> writes:
>> 
>> > Can you please quote chapter and verse (in POSIX) where it states that
>> > ENOTSUP and EOPNOTSUP have to be numerically distinct?
>> 
>> <http://www.opengroup.org/onlinepubs/009695399/basedefs/errno.h.html>
>> "Their values shall be unique except as noted below."
>> (And there is no exception for ENOTSUP/EOPNOTSUP yet.)
>
> Ah, but you're quoting from SuS, not POSIX.  (Yes, I'm splitting
> hairs, but that's what standards are all about.  :-)

The quoted sentence is not shaded as an XSI extension, thus it is part of
POSIX-1:2001.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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"And now for something completely different."