I/O port protection

Adam Lackorzynski adam at os.inf.tu-dresden.de
Thu Jan 11 22:57:08 CET 2007


On Thu Jan 11, 2007 at 22:25:56 +0100, Daniel Vandersee wrote:
> is it possible to allow I/O page mapping at the RMGR for a newly created
> task (using l4_task_new) as it were possible using the "allow_cli" flag
> in the roottask configuration?
> Usually the pager of the newly created task would handle its I/O
> pagefaults. Unfortunately this won't work here as this particular task
> (L4 loader) tries to directly map I/O pages using an IPC call to the
> ressource manager.
> So the question is: How can I tell the ressource manager to allow I/O
> mapping for this particular task?

The loader can be configured to allow only specific ports for specific
applications. roottask just gives them out, so it already does this?!

Adam                 adam at os.inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/

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