concurrent sysctl implementation

[Jeremie Le Hen]

On Fri, Jul 24, 2009 at 11:18:42AM +0300, Kostik Belousov wrote:
> On Fri, Jul 24, 2009 at 09:34:51AM +0200, Jeremie Le Hen wrote:
> > Hi Ed,
> > 
> > Sorry for the late reply.
> > 
> > On Sat, May 09, 2009 at 02:13:13PM +0200, Ed Schouten wrote:
> > > We probably could. I think I discussed this with Robert Watson some time
> > > ago and we could use things like ELF hints. But still, that doesn't
> > > prevent us from reaching this limitation later on.
> > 
> > Can you elaborate a little?  Are you talking about elf-hints.h?
> > I don't see where we can get randomness from it.
> 
> The thing is called ELF auxillary information vector. It is used to
> supply some useful information for interpreter from the kernel,
> see include/machine/elf.h for AT_* entries.

Ah ok, so the idea is to generate a new hint, for instance AT_RANDOM,
generated at link time, that will be used to fill the canary at exec(2)
time?

Regards,
-- 
Jeremie Le Hen
< jeremie at le-hen dot org >< ttz at chchile dot org >