Re: [Xen-devel] simple check for domU?

[NAHieu <nahieu@xxxxxxxxx>]

On 11/11/05, Chris Bainbridge <chris.bainbridge@xxxxxxxxx> wrote:
> Hi, is there a simple way to check that we're running under a domU? So
> far I came up with:
>
> [[ -d /proc/xen && ! -z `ls /sys/bus/xen/devices/` ]]
>
> or
>
> -e /sys/bus/xen/drivers/vbd || -e /sys/bus/xen/drivers/vif
>
> Neither of which is pretty, and I'm not convinced they work under all
> circumstances. This is useful for system setup scripts to do different
> things depending if they are run under dom0/U.

That is easy. Something you will never see in domU, such as
xenconsoled, xenstored,...

So check for the presence of these daemons is a good way, especially
that requires no privileged access.

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