[okl4-developer] iguana scheduling security question

[Ben Leslie]

On Sun Jul 08, 2007 at 15:49:49 -0400, Jorge Torres wrote:
>Hi okl4.org,
>
>Please correct me if I'm wrong, Isn't the fact of every iguana's thread
>being able of setting it's own scheduling parameters as seen in thread_setup
>L4_ThreadControl(self->id, pd_l4_space(pd), self->id, L4_Myself(),
>L4_Myself(), 0, utcb);, where scheduler is set to be their selves, a
>security issue?, since there will be no way to prevent one thread of
>becoming it self a system starving thread.

Hi Jorge,

You are correct, currently threads are able to schedule themselves,
which can lead to a denial-of-service. The next release of OKL4 
delegates scheduling to Iguana, and threads are steup in such a way
that they can not adjust their own scheduling parameters.

Cheers,

Ben