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xen-devel
Re: [Xen-devel] reading xenstored from domU
root processes can read xenstore via a kernel driver. ‘xenstore-read’ for example should work fine in a domU. So you can poke some identifier into xenstore from dom0 and read it in domU.
-- Keir
On 28/3/08 06:45, "Muhammad Atif" <m_atif_s@xxxxxxxxx> wrote:
Hi
I have a question regarding ability of a domU to read Xenstored. Is it possible for domU to read some of the values from xenstored? like its own domID? Or some other information? To be more specific can a simple user level program like get_my_domID.C do it? Or do we have to write some kernel module to do that job? With my setup of virtual machines, I am 'not at all' concerned about the security.
The question arises from the fact that (obviously it is not openly possible) that how can a domU know what dom0 is it on, especially if domU wants to broadcast its host to other domU's? I totally understand this is not supposed to be in Xen architecture, so please don't ask why I want to do this :).
I also understand this question has been asked so many times in the list, but I am not able to find any definitive answer.
Best Regards,
Atif
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