[libvirt] [PATCH 03/10] Add namespace callback hooks to domain_conf.
Eric Blake
eblake at redhat.com
Wed Apr 21 17:01:18 UTC 2010
On 04/21/2010 10:01 AM, Chris Lalancette wrote:
> This patch adds namespace XML parsers to be hooked into
> the main domain parser. This allows for individual hypervisor
> drivers to add per-namespace XML into the main domain XML.
>
> @@ -4366,6 +4372,22 @@ static virDomainDefPtr virDomainDefParseXML(virCapsPtr caps,
> goto error;
> }
>
> + /* callout to per-namespace parsers (in the individual drivers) */
> + if (caps->ns) {
> + /* we have to make a copy of all of the callback pointers here since
> + * we won't have the virCaps structure available during free
> + */
> + def->ns.parse = caps->ns->parse;
> + def->ns.free = caps->ns->free;
> + def->ns.format = caps->ns->format;
> + def->ns.href = caps->ns->href;
Can these four lines be simplified as: def->ns = *caps->ns
> + if (def->namespaceData && def->ns.href)
> + virBufferVSprintf(&buf, " %s", (def->ns.href)());
Are we guaranteed that def->namespaceData will be non-null if ns.parse
succeeded, or should we call ns.href if present even if
def->namespaceData is NULL?
> + if (def->namespaceData && def->ns.format) {
> + if ((def->ns.format)(&buf, def->namespaceData) < 0)
Likewise - can ns.format exist, but namespaceData validly be NULL after
a successful ns.parse?
If ns.parse is required to set namespaceData to a non-NULL value on
success, then ACK.
--
Eric Blake eblake at redhat.com +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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