[Xen-users] Programatically checking if we're in a domU or dom0

[Andrew Ross <aross@xxxxxxxxxx>]

Lutrin Jean wrote:


> - what would be a simple way from a shell script
> to detect wether we're inside a domU or a dom0?

The mere existence of /proc/xen is enough to infer that you're in a
paravirtualized Xen domain (as opposed to running under a regular Linux
kernel, for example).

Personally, I use the following command in a startup script to check if
we're in a privileged domain:

grep -qsE '^control_d$' /proc/xen/capabilities

Cheers

Andrew

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