snapshot: Allow for post-parse override

Wire up the accessor functions necessary for the testsuite to install
an alternative post-parse handler from normal drivers. I could have
modified the signature for virDomainXMLOptionNew() to take another
parameter, but thought it was easier to add a new set function rather
than chase down all existing callers. Until code actually sets the
override, there is no change in behavior.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>

src/conf/domain_conf.c

@@ -82,6 +82,9 @@ struct _virDomainXMLOption {
 
     /* Private data for save image stored in snapshot XML */
     virSaveCookieCallbacks saveCookie;
+
+    /* Snapshot postparse callbacks */
+    virDomainMomentPostParseCallback momentPostParse;
 };
 
 #define VIR_DOMAIN_DEF_FORMAT_COMMON_FLAGS \
@@ -1476,6 +1479,24 @@ virDomainXMLOptionGetSaveCookie(virDomainXMLOptionPtr xmlopt)
 }
 
 
+void
+virDomainXMLOptionSetMomentPostParse(virDomainXMLOptionPtr xmlopt,
+                                     virDomainMomentPostParseCallback cb)
+{
+    xmlopt->momentPostParse = cb;
+}
+
+
+int
+virDomainXMLOptionRunMomentPostParse(virDomainXMLOptionPtr xmlopt,
+                                     virDomainMomentDefPtr def)
+{
+    if (!xmlopt->momentPostParse)
+        return virDomainMomentDefPostParse(def);
+    return xmlopt->momentPostParse(def);
+}
+
+
 void
 virBlkioDeviceArrayClear(virBlkioDevicePtr devices,
                          int ndevices)

src/conf/domain_conf.h

@@ -2728,6 +2728,13 @@ virDomainXMLOptionPtr virDomainXMLOptionNew(virDomainDefParserConfigPtr config,
 virSaveCookieCallbacksPtr
 virDomainXMLOptionGetSaveCookie(virDomainXMLOptionPtr xmlopt);
 
+typedef int (*virDomainMomentPostParseCallback)(virDomainMomentDefPtr def);
+
+void virDomainXMLOptionSetMomentPostParse(virDomainXMLOptionPtr xmlopt,
+                                          virDomainMomentPostParseCallback cb);
+int virDomainXMLOptionRunMomentPostParse(virDomainXMLOptionPtr xmlopt,
+                                         virDomainMomentDefPtr def);
+
 void virDomainNetGenerateMAC(virDomainXMLOptionPtr xmlopt, virMacAddrPtr mac);
 
 virDomainXMLNamespacePtr

src/conf/snapshot_conf.c

@@ -270,7 +270,7 @@ virDomainSnapshotDefParse(xmlXPathContextPtr ctxt,
         } else {
             VIR_WARN("parsing older snapshot that lacks domain");
         }
-    } else if (virDomainMomentDefPostParse(&def->common) < 0) {
+    } else if (virDomainXMLOptionRunMomentPostParse(xmlopt, &def->common) < 0) {
         goto cleanup;
     }
 

src/libvirt_private.syms

@@ -608,6 +608,7 @@ virDomainWatchdogModelTypeToString;
 virDomainXMLOptionGetNamespace;
 virDomainXMLOptionGetSaveCookie;
 virDomainXMLOptionNew;
+virDomainXMLOptionSetMomentPostParse;
 
 
 # conf/domain_event.h