Greg Troxel wrote:
> NetBSD has MAP_ANON, and MAP_ANONYMOUS looks odd to me. I tried to find
> what POSIX says, and it seems MAP_ANON* is not part of the required
> definition of mmap:
>
> http://www.opengroup.org/onlinepubs/009695399/functions/mmap.html
>
> I am pretty sure mmap originated around 4.2BSD, so would think that
> 4.4BSD-derived systems would have the historically correct definition
> for MAP_ANON.
>
> On my mac (10.5.7) sys/mman.h has MAP_ANON and not MAP_ANONYMOUS.
>
> Does MAP_ANON work on linux? Any reason not to just use MAP_ANON?
I know nothing about mmap, but a quick grep shows the following on Debian sid.
bits/mman.h is #included by sys/mman.h:
02:51:51> [xsdg{intercal}@/usr/include]
$ack MAP_ANON
asm-generic/mman.h
21:#define MAP_ANONYMOUS 0x20 /* don't use a file */
bits/mman.h
53:# define MAP_ANONYMOUS 0x20 /* Don't use a file. */
54:# define MAP_ANON MAP_ANONYMOUS
--xsdg
PS. ack-grep is awesome: http://betterthangrep.com/
curl http://ack.googlecode.com/svn/tags/latest/ack > ~/bin/ack && chmod 0755 !$
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