[H-GEN] User mode Linux

[Trent WADDINGTON]

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On Fri, 24 Jan 2003, David Jericho wrote:

> User Mode Linux for those who don't know is basically a "port" of the
> Linux kernel which allows it to run as an application in user space.
> This allows you to effectively start a whole second machine on your
> machine. Nice to have a sandbox to try something in without damaging
> your main machine.

Always wondered, does it run binaries unmodified?  If so, how does it
redirect the system calls to the kernel process?  I guess it could use a
kernel module or something but how does it distinquish the system calls
from normal processes from the system calls of the UML processes.  Hmm..
which leads me to ask the question: do processes under the UML run as
seperate processes on the host machine or are they loaded into the
userspace of the UML kernel process?

Trent


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