qmp: Add qom-list-properties to list QOM object properties

There is already 'device-list-properties' which does most of the job,
however it does not handle everything returned by qom-list-types such
as machines as they inherit directly from TYPE_OBJECT and not TYPE_DEVICE.
It does not handle abstract classes either.

This adds a new qom-list-properties command which prints properties
of a specific class and its instance. It is pretty much a simplified copy
of the device-list-properties handler.

Since it creates an object instance, device properties should appear
in the output as they are copied to QOM properties at the instance_init
hook.

This adds a object_class_property_iter_init() helper to allow class
properties enumeration uses it in the new QMP command to allow properties
listing for abstract classes.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20180301130939.15875-3-aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/qom/object.c b/qom/object.c
index f70a75c308..755ad03819 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -1037,6 +1037,13 @@ ObjectProperty *object_property_iter_next(ObjectPropertyIterator *iter)
     return val;
 }
 
+void object_class_property_iter_init(ObjectPropertyIterator *iter,
+                                     ObjectClass *klass)
+{
+    g_hash_table_iter_init(&iter->iter, klass->properties);
+    iter->nextclass = klass;
+}
+
 ObjectProperty *object_class_property_find(ObjectClass *klass, const char *name,
                                            Error **errp)
 {