qmp: Include parent type on 'qom-list-types' output

Include name of parent type of each type on 'qom-list-types' output.

Without this, there's no way to figure out the parents of a given type
without making additional 'qom-list-types' queries.

In addition to the test case for the new feature, update the
abstract-interface test case to use the new field and avoid the
"qom-list-types implements=object" trick.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20170707122215.8819-4-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/qmp.c b/qmp.c
index 7a9de06af4..b86201e349 100644
--- a/qmp.c
+++ b/qmp.c
@@ -430,10 +430,15 @@ static void qom_list_types_tramp(ObjectClass *klass, void *data)
 {
     ObjectTypeInfoList *e, **pret = data;
     ObjectTypeInfo *info;
+    ObjectClass *parent = object_class_get_parent(klass);
 
     info = g_malloc0(sizeof(*info));
     info->name = g_strdup(object_class_get_name(klass));
     info->has_abstract = info->abstract = object_class_is_abstract(klass);
+    if (parent) {
+        info->has_parent = true;
+        info->parent = g_strdup(object_class_get_name(parent));
+    }
 
     e = g_malloc0(sizeof(*e));
     e->value = info;