[OLPC Security] permissions for setting scheduler policy

[Jim Gettys]

A typical solution is, when you are about to start the process, invoke a
different (very small, so it can be audited) process that can set what
you need as root, and then drop the privileges before execing the real
image that does the work.

But Michael may have something else in mind for Rainbow.
                        - Jim


On Wed, 2008-08-13 at 11:21 +0100, Victor Lazzarini wrote:
> Hello everyone,
> 
> I am working on trying to get better RT performance
> off csound. I have added some code to set the
> scheduler policy and priority, but the problem is
> that I can only use it as root.
> 
> As user olpc, the scheduler code will not be allowed
> to set the policy and priority.
> 
> It'd be ideal if activities using csound could take
> advantage of this code, because it seems to help
> performance. We could set up group permissions
> for that in /etc/security/limits.conf
> 
> What are your thoughts (esp. Deepak and Daniel D)?
> 
> Dr Victor Lazzarini
> Senior Lecturer
> Music Technology Laboratory, Music Department
> National University of Ireland, Maynooth 
> 
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-- 
Jim Gettys <jg at laptop.org>
One Laptop Per Child