privsep patch, Please test (take 2)

[Ben Lindstrom]

Ermm.. I think your configure.ac is invalid.

Two things.

1. Lack of MAP_ANON/MAP_ANONYMOUS does not mean mmap is broken.  Just
means it lacks a useful feature.

2. Linux 2.2 has a MAP_ANON but it's broken.  But that is a seperate issue
from the fact that MAP_SHARED seems also to be broken.  I think they need
to be tested seperately.

Because if MAP_ANON is not useful (does not exist) we have a fallback
plan.  However if MAP_SHARED is broken.  We are SOL.

- Ben

On Thu, 30 May 2002, Tim Rice wrote:

>
> It looks like mmap() with MAP_SHARED just doesn't work on Linux 2.2
> so i'm releasing a new patch.
> See http://mail.nl.linux.org/linux-mm/1999-01/msg00034.html
>
> On Wed, 29 May 2002, Tim Rice wrote: (and then revised)
>
> Please try the attached patch. It adds support for platforms that
> have mmap() but do not support MAP_ANONYMOUS.
> Ie. UnixWare 2.x, Solaris < 8
>
> You'll need autoconf 2.52 installed
> Run autoreconf after applying the patch.
>
> If you don't have autoconf 2.52 installed,
> grab the new configure from
> 	http://www.multitalents.net/openssh/configure-privsep-2.gz
> or
> 	ftp://ftp.multitalents.net/pub/openssh/configure-privsep-2.gz
> and add the following line to config.h.in
> #undef HAVE_BROKEN_MMAP
>
> It works on UnixWare 2.1.3, and Solaris 7.
> (In addition to the platforms that worked before)
>
> It doesn't work with SCO yet. A problem with sendmsg() in mm_receive_fd()
>
> I'd like to hear from other platforms that this helps.
>
>
> --
> Tim Rice				Multitalents	(707) 887-1469
> tim at multitalents.net
>
>
>