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

Michael Driscoll
2004-07-01T17:26:46Z

On Thursday 01 July 2004 08:43, 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.

mmap can (and will, in the case of glibc) return NULL for a length of 0.

--
Michael Driscoll, fenris@ulfheim.net
"A noble spirit embiggens the smallest man" -- J. Springfield