[Qemu-devel] [PATCH v3 2/6] qmp: make "qom-list-properties" show initial property values

[Igor Mammedov <imammedo@redhat.com>]

Add in the command output object's property values right after creation
(i.e. state of the object returned by object_new() or equivalent).

Follow up patch will add machine property 'numa-mem-supported', which
would allow mgmt to introspect which machine types (versions) still
support legacy "-numa mem=FOO" CLI option and which don't and require
alternative '-numa memdev' option being used.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 qapi/misc.json | 5 ++++-
 qmp.c          | 5 +++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/qapi/misc.json b/qapi/misc.json
index 8b3ca4f..e333285 100644
--- a/qapi/misc.json
+++ b/qapi/misc.json
@@ -1365,10 +1365,13 @@
 #
 # @description: if specified, the description of the property.
 #
+# @default: initial property value.
+#
 # Since: 1.2
 ##
 { 'struct': 'ObjectPropertyInfo',
-  'data': { 'name': 'str', 'type': 'str', '*description': 'str' } }
+  'data': { 'name': 'str', 'type': 'str', '*description': 'str',
+            '*default': 'any' } }
 
 ##
 # @qom-list:
diff --git a/qmp.c b/qmp.c
index b92d62c..8415541 100644
--- a/qmp.c
+++ b/qmp.c
@@ -593,6 +593,11 @@ ObjectPropertyInfoList *qmp_qom_list_properties(const char *typename,
         info->type = g_strdup(prop->type);
         info->has_description = !!prop->description;
         info->description = g_strdup(prop->description);
+        if (obj) {
+            info->q_default =
+                object_property_get_qobject(obj, info->name, NULL);
+            info->has_q_default = !!info->q_default;
+        }
 
         entry = g_malloc0(sizeof(*entry));
         entry->value = info;
-- 
2.7.4