In order to implement all this stuff, you need all kinds of new cruft in the
kernel, and some in the system call path.
I better way to do this (IMHO) is with a dedicated sandbox arrangement. My
user-mode port of the kernel (http://user-mode-linux.sourceforge.net) is one.
It gives you a virtual machine whose disk space consumption, cpu consumption,
memory comsumption, and network traffic can be completely controlled.
Plus, it's all in user-space. Nothing needs to be added to the kernel at all.
Jeff
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