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From: Gabriel Paubert <paubert@iram.es>
To: Kyle Moffett <mrmacman_g4@mac.com>
Cc: Jamie Lokier <jamie@shareable.org>,
	William Lee Irwin III <wli@holomorphy.com>,
	Michael Kerrisk <michael.kerrisk@gmx.net>,
	linux-kernel@vger.kernel.org
Subject: Re: [OT] Testing PROT_NONE and other protections, and a surprise
Date: Fri, 2 Jul 2004 09:37:06 +0200	[thread overview]
Message-ID: <20040702073706.GA10286@iram.es> (raw)
In-Reply-To: <F64265B6-CB6C-11D8-947A-000393ACC76E@mac.com>

On Thu, Jul 01, 2004 at 10:43:05AM -0400, Kyle Moffett wrote:
> On Jul 01, 2004, at 08:39, Jamie Lokier wrote:
> >The error code is -1, aka. MAP_FAILED.
> Oops!  I guess I was just lucky that part didn't fail :-D  On the other 
> hand, it
> couldn't legally return 0 anyway, could it?  That would have been a 
> slightly
> more sensible error code, IMHO, anyway, but it probably came from some
> silly standard somewhere.

It can, but only if you explicitly ask for it (MAP_FIXED with 0 as an
address), and it is very useful for DOS emulators.
	
	Cheers,
	Gabriel

  parent reply	other threads:[~2004-07-02  7:39 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-06-30  2:44 A question about PROT_NONE on ARM and ARM26 Jamie Lokier
2004-06-30  3:38 ` William Lee Irwin III
2004-07-01  3:26   ` Testing PROT_NONE and other protections, and a surprise Jamie Lokier
2004-07-01  3:35     ` William Lee Irwin III
2004-07-01  4:01       ` Jamie Lokier
2004-07-01  3:44     ` Kyle Moffett
2004-07-01  4:11       ` Jamie Lokier
2004-07-01  4:59         ` Kyle Moffett
2004-07-01 12:39           ` Jamie Lokier
2004-07-01 14:43             ` [OT] " Kyle Moffett
2004-07-01 14:50               ` Jamie Lokier
2004-07-01 15:01                 ` Kyle Moffett
2004-07-01 16:37                   ` Matt Mackall
2004-07-01 17:26               ` Michael Driscoll
2004-07-02  7:37               ` Gabriel Paubert [this message]
2004-07-01 12:52     ` Russell King
2004-07-01 14:26     ` Richard Curnow
2004-06-30  8:16 ` A question about PROT_NONE on ARM and ARM26 Russell King
2004-06-30 14:59   ` Jamie Lokier
2004-06-30 15:22     ` Ian Molton
2004-06-30 18:26     ` Russell King
2004-06-30 19:14       ` Jamie Lokier
2004-06-30 19:23         ` Russell King
2004-06-30 20:15           ` Jamie Lokier
2004-06-30 22:59             ` Russell King
2004-06-30 23:30               ` Jamie Lokier
2004-06-30 23:48                 ` Ian Molton
2004-07-01  1:59                   ` Jamie Lokier
2004-07-01  1:05                 ` Nicolas Pitre
2004-07-01  1:50                   ` Jamie Lokier
2004-07-02 18:39                 ` Russell King
2004-07-01 15:27               ` Scott Wood
2004-07-01 23:53                 ` Jamie Lokier
2004-07-02 14:36                   ` Scott Wood

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