Re: [Xen-devel] [PATCH 2/2] libxl: fix UUID usage on FreeBSD

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Ian Campbell writes ("Re: [Xen-devel] [PATCH 2/2] libxl: fix UUID usage on 
FreeBSD"):
> On Fri, 2016-01-15 at 16:11 +0100, Roger Pau Monné wrote:
> > Yes, we can remove the uuid_t from libxl_uuid, but this is AFAICT a
> > structure that belongs to the stable API.
> 
> Oh b*m, so it is.

I think we may have to bite this bullet.  Perhaps we could make an
#ifdef that softened the blow on systems with sane uuid_t.

Given that we have discovered that uuid_t is sometimes insane, I think
we really really want to avoid it.

> Or can we get rid of uuid_raw (which is not touched, and is less likely to
> be given that it is only on a subset of platforms) and have libxl
> _internal_ stuff convert to a byte array.

We don't want to do any byteswapping.  That way lies utter madness.
At the libxl API/ABI uuids should be represented as sequences of 16
octets in network byte order (BE).

Ian.

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