[Libguestfs] [PATCH 3/3] Add APIs for resolving the appliance kernel/initrd

[Daniel P. Berrange]

On Tue, Jul 06, 2010 at 08:30:21AM +0100, Richard W.M. Jones wrote:
> On Mon, Jul 05, 2010 at 12:26:01PM -0400, Daniel P. Berrange wrote:
> 
> > +  ("get_kernel", (RConstString "kernel", []), -1, [],
> 
> RConstString is the wrong type to use here, I think.
> 
> If users should call find_appliance before this, then it should be an
> error not to have called it, so RString would be the correct return
> type.

Using RString introduces a needless strdup & free between
libguestfs & the caller, so I chose RConstString to avoid
this.  Both RString and RConstString declare that NULL is
an error condition, so I'm not sure why we need to change
this to RString since they're appear to be equivalent in 
their error reporting semantics.

Regards,
Daniel
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