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RE: [Xen-devel] xenstore -- read UUID

To: Geoffrey Lefebvre <geoffrey@xxxxxxxxx>, xen developers community <xen-devel@xxxxxxxxxxxxxxxxxxx>, xen users community <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] xenstore -- read UUID
From: dinesh chandrasekaran <dinesh_chan8@xxxxxxxxxxx>
Date: Fri, 12 Sep 2008 03:19:21 +0530
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Absolulty. Thanks.
                            but uuid_unparse() is defined in /usr/include/uuid which means I could use this only from the use space in domain-0.
The hypervisor doesnot include these user space libraries. How could I convery the dmain->handle; the 16 byte uuid to a human readable
from inside the hypervisor?

Dinesh C

> Date: Thu, 11 Sep 2008 14:28:37 -0700
> From: geoffrey@xxxxxxxxx
> To: dinesh_chan8@xxxxxxxxxxx
> Subject: Re: [Xen-devel] xenstore -- read UUID
> CC: xen-devel@xxxxxxxxxxxxxxxxxxx; xen-users@xxxxxxxxxxxxxxxxxxx
> > Hi geoffrey,
> > the xen_domain_handle_t in the domain handle field is an
> > unsigned char array of size 16.
> > Where could the UUID be accessed from?
> > or how would you relate the d->handle to the domain's uuid (where d is of
> > type struct domain *d).
> > is all the 16 entries in the d->handle clubbed together to get the domain's
> > uuid?
> >
> Hi dinesh,
> d->handle contains the domain uuid.
> A uuid is a 16 byte number. Xen and libuuid store uuids as 16 byte
> char array. They both define typedefs (xen_domain_handle_t and uuid_t
> respectively) for a 16 byte char array.
> If you want to generate a human readable version, you can use
> uuid_unparse to generate a 37 character C string from the uuid_t.
> Hope this helps.
> geoffrey
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel

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