RE: DOM0_GETDOMAININFO intended behavior

From: "Ian Pratt" <m+Ian.Pratt@cl.cam.ac.uk>
To: Daniel Stekloff <dsteklof@us.ibm.com>
Cc: Kip Macy <kip.macy@gmail.com>,
	xen-devel@lists.xensource.com, Christian.Limpach@cl.cam.ac.uk
Subject: RE: DOM0_GETDOMAININFO intended behavior
Date: Wed, 8 Jun 2005 11:42:04 +0100	[thread overview]
Message-ID: <A95E2296287EAD4EB592B5DEEFCE0E9D282117@liverpoolst.ad.cl.cam.ac.uk> (raw)

> > Passing a flag in to explicitly request that you want to 
> iterate would 
> > probably be an improvement to the interface. 
> 
> Instead of changing the interface and the applications, how about the
> following: If you request a specific domain id and it doesn't 
> exist, you get back the expected result. If, however, you 
> want a list of domains it works like it has been.

Hmm, I'm not sure I like this. It turns a relatively minor 'gotcha' of
the hypervisor interface into something that's more confusing: if you're
trying to iterate over domains using xc_domain_getinfo then you have to
ask for at least two domains at a time otherwise you'll get ESRCH.

I think the cleanest fix is just to add an 'iterate' flag to the
parameters in GETDOMAININFO, no?

Ian