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Subject: Re: [Qemu-devel] Using QEMU guest agent to run programs from guest
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To: Erlon Cruz <sombrafam@gmail.com>
Cc: qemu-devel@nongnu.org, lcapitulino@redhat.com

On Mon, Dec 31, 2012 at 06:14:59PM -0200, Erlon Cruz wrote:
> Hi,
> 
> 
> I needed to run an external program in a guest machine. Once this must be
> triggered by the host, I first thought in qemu-ga.
> Is that possible? In QEMU help page and in the code I couldn't find such
> capability.
> So Im thinking In to implement a new GA QMP command that can run generic
> programs in the guest. It would be receive/return something like this:
> 
> {"execute":"execvp",
> "arguments":{"command":"/bin/ls","cmdargs":"-la","timeout":20}}
> {"return": {"status": "0", "stdout": "aGVsbG8gd29ybGQhCg==", "stderr": ""}}
> 
> Any thoughts/ideas about this?

I sent an RFC for this a while back:

http://lists.gnu.org/archive/html/qemu-devel/2011-12/msg00722.html

At the time the interface seemed a bit tedious, but AFAIK it's the only
kind of approach that'll work for longer-running commands with lots of
output, so I might just clean it up and re-spin the series.

> 
> Kind Regards,
> Erlon