Re: [PATCH 2/2] kvm tools: Allow easily sandboxing applications within a guest

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On Fri, 2011-12-02 at 09:39 +0200, Pekka Enberg wrote:
> On Fri, 2011-12-02 at 09:26 +0200, Pekka Enberg wrote:
> >> On Fri, Dec 2, 2011 at 9:16 AM, Sasha Levin <levinsasha928@xxxxxxxxx> wrote:
> >>> This patch adds a '--sandbox' argument when used in conjuction with a custom
> >>> rootfs, it allows running a script or an executable in the guest environment
> >>> by using executables and other files from the host.
> >>>
> >>> This is useful when testing code that might cause problems on the host, or
> >>> to automate kernel testing since it's now easy to link a kvm tools test
> >>> script with 'git bisect run'.
> >>>
> >>> Suggested-by: Ingo Molnar <mingo@xxxxxxx>
> >>> Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx>
> >>
> >> Nice! How do I use this to run trinity sandboxed in a guest?
> 
> On Fri, 2 Dec 2011, Sasha Levin wrote:
> > Assuming you have trinity installed in /usr/bin or something similar in
> > on the host (you can just 'cp trinity /usr/bin/'), just write this
> > script:
> >
> > test-trinity.sh:
> > 	#! /bin/bash
> > 	trinity --mode=random --quiet -i
> >
> > and run using:
> > 	./kvm run -k [kernel to test] --sandbox test-trinity.sh
> 
> Would it not be better to introduce a new command that works like 'perf 
> stat', for example:
> 
>    ./kvm sandbox -k <kernel to test> -- trinity --mode=random --quiet -i
> 
> ?

So basically proxy the first set of parameters to 'kvm run' and run the
second one as the script? Thats possible as well.

I did the '--sandbox' parameters so that we could pass a script that
could do more complex testing in the guest, but it's also possible with
your suggestion so we could do it that way as well.

-- 

Sasha.

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