Arun Sharma wrote:

> Christoph doesn't like the idea of adding exec-domains just for this 
> purpose and has suggested adding a new system call to set the altroot. A 
> prototype patch to do this already exists. I will be cleaning it up and 
>  posting it to LKML later this week. The main purpose of moving the 
> discussion to LKML was to see how receptive people were to the proposed 
> new system call.
> 

Attached is the promised patch. It addresses Christoph's comments and 
fixes the bug Tony found as well.

	-Arun