[Libvir] State of driver backend infrastructure

[Daniel Veillard]

On Mon, Jun 12, 2006 at 06:52:57PM -0400, Daniel Veillard wrote:
> On Mon, Jun 12, 2006 at 11:19:00PM +0100, Daniel P. Berrange wrote:
> >     virGetVersion:
> >     
> >      - Hardcodes support for Xen HV. No virConnectPtr handle, so
> >        how would we call out to driver backends ?
> >     
> 
>   yes that's an API bug :-\ , I'm afraid that mean I will have to make a
> release breaking compatibility, annoying, better do that as soon as possible.

  Actually no :-) no need to change the function signature I think:

http://libvirt.org/html/libvirt-libvirt.html#virGetVersion

  Provides two information back, @libVer is the version of the library
  while @typeVer will be the version of the hypervisor type @type against
  which the library was compiled. If @type is NULL, "Xen" is assumed,
  if @type is unknown or not availble, an error code will be returned
  and @typeVer will be 0.

this is a static compile time check. What we need is to provide a version info
from the driver, if possible provided in the source, but that should not 
require a change of the User API. On the other hand adding a version field
from struct _virDriver make sense, but it's not impacting user code at all,
I will do that.

Daniel

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