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

[Grok Mogger <linuximp@xxxxxxxxx>]

This might be a somewhat silly way of doing it....  but could you make an
identical copy of your xen kernel for all your DomU's, but rename it to
something else?

Then maybe instead of a 'uname -r' giving you something like...
2.6.16-xen
You could get something like...
2.6.16-xen-DomU

Not sure if that'll help, but maybe...?
- GM

-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx]On Behalf Of Lutrin Jean
Sent: Wednesday, October 04, 2006 9:52 AM
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Programatically checking if we're in a domU or
dom0


> 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

Hi Andrew,

thanks for your tip.

Now I can easily determine wether I'm running
on a modified kernel or not (by checking for
the presence of /proc/xen).

However, once I've found that, I'd like to know
if I'm on a priviledged domain or not.

Sadly my /proc/xen/capabilities is only readable
by root.

What would be a clean way to check for this from
a normal user account?








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