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Re: [Libvir] PATCH: 5/10: public auth callback API

On Mon, Dec 03, 2007 at 04:13:53PM -0500, Daniel Veillard wrote:
> On Thu, Nov 29, 2007 at 05:19:31PM +0000, Daniel P. Berrange wrote:
> > When the callback is invoked, it will be passed a list of virConnectCredentialPtr
> > structs which contain details on all the credentials that the authentication
> > mechanism needs to collect. They are passed all at once to make it easy to
> > construct a big form in UI:
> > 
> >  typedef int (*virConnectAuthCallbackPtr)(virConnectCredentialPtr cred,
> >  					 unsigned int ncred,
> >  					 void *cbdata);
>   okay, I have just two remarks about the API: that the callback seems to
> get passed an array of virConnectCredential as first argument, not a
> list of virConnectCredentialPtr.

Yes, I'll fix the comment to reflect this.

>                                Also I hope we won't end up with too many 
> virConnectOpenAuth flags, maybe using a long to be sure we can fit at least
> 64 options might be a good safe thing to do. We have not been very consistent
> so far in libvirt for the flags, sometime using int/unsigned int/unsigned long
> maybe unsigned long is safer and cleaner, i could see how various
> authentications options may end up growing that set over time.

I don't anticipate the flags will be widely used in the future. Aside from the
callbacks, and the read-only flag, all interesting params are part of the URI
string. We already have a 32-bit  'int flags' param in the remote protocol wire
format for the open call prior to this patch, so we can't make this new API
use 64-bits without changing wire ABI.  I'm not really worried though - I
rather doubt we'll ever use this flags params for much.

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