Re: [OT] Testing PROT_NONE and other protections, and a surprise

[Gabriel Paubert]

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
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