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From: Guillaume Thouvenin <guillaume.thouvenin@bull.net>
To: Andi Kleen <ak@suse.de>
Cc: lkml <linux-kernel@vger.kernel.org>,
	elsa-announce <elsa-announce@lists.sourceforge.net>,
	elsa-devel@frec.bull.fr
Subject: Re: [Lse-tech] [RFC] fork historic module
Date: Mon, 20 Dec 2004 08:28:45 +0100	[thread overview]
Message-ID: <1103527725.23891.15.camel@frecb000711.frec.bull.fr> (raw)
In-Reply-To: <20041217151115.GD14229@wotan.suse.de>

On Fri, 2004-12-17 at 16:11 +0100, Andi Kleen wrote:
> > +/* IOCTL numbers */
> > +/* If you add a new IOCTL number don't forget to update FH_MAXNR */
> > +#define FH_MAGIC	0x35
> > +#define FH_REGISTER	_IO(FH_MAGIC,0)
> > +#define FH_UNREGISTER	_IO(FH_MAGIC,1)
> 
> Is this really unique? 32bit emulation currently needs unique ioctl numbers.

I read the Documentation/ioctl-number.txt file and 0x35 is not mentioned
in this file. But I made a grep on 'MAGIC' and '35' in the Linux source
tree and you're right, this number is already used by POR_MAGIC_2. 

Is a grep in the Linux source tree is enough to know if the value is
unique?

Thanks,
Guillaume  


  reply	other threads:[~2004-12-20  8:07 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-17 14:58 [RFC] fork historic module Guillaume Thouvenin
2004-12-17 15:11 ` [Lse-tech] " Andi Kleen
2004-12-20  7:28   ` Guillaume Thouvenin [this message]
2004-12-17 15:24 ` David Vrabel
2004-12-17 17:06   ` Randy.Dunlap
2004-12-17 17:39 ` [Lse-tech] " Erich Focht
2004-12-17 16:52 Manfred Spraul
2004-12-17 16:59 ` Andi Kleen

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