DragonFly BSD
DragonFly kernel List (threaded) for 2003-08
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Re: Buffer overflow?

From: Pedro Giffuni <giffunip@xxxxxxxx>
Date: Sat, 02 Aug 2003 01:17:42 -0500


Alexander Leidinger wrote:

> On Fri, 01 Aug 2003 07:39:19 +0100
> Hiten Pandya <hmp@xxxxxxxx> wrote:
> > > IIRC Hiten is busy working on getting the OpenBSD non-exec stack code
> > > working on DragonFly.
> > >
> >
> >       I have sussed out the signal trampoline code and how it was
> >       changed for IRIX binary emulation in other (NeT|Open) BSDs.
> >       I am gonna be off to holiday from next week or so; once I get
> >       back, I will resume my efforts on the non-exec stack for DFly.
> Are you also going to port it to FreeBSD?

I understand this (the userland signal trampoline) was already done on
FreeBSD 5.0, but I'm not sure it supports yet all architectures. Furthermore
the kernel must keep supporting the old method for backward compatibility.

my $0.02.


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