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>
diff --git a/qmp.c b/qmp.c
index 66332c3..8c7d1cc 100644
--- a/qmp.c
+++ b/qmp.c
@@ -578,6 +578,55 @@
return prop_list;
}
+ObjectPropertyInfoList *qmp_qom_list_properties(const char *typename,
+ Error **errp)
+{
+ ObjectClass *klass;
+ Object *obj = NULL;
+ ObjectProperty *prop;
+ ObjectPropertyIterator iter;
+ ObjectPropertyInfoList *prop_list = NULL;
+
+ klass = object_class_by_name(typename);
+ if (klass == NULL) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Class '%s' not found", typename);
+ return NULL;
+ }
+
+ klass = object_class_dynamic_cast(klass, TYPE_OBJECT);
+ if (klass == NULL) {
+ error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename", TYPE_OBJECT);
+ return NULL;
+ }
+
+ if (object_class_is_abstract(klass)) {
+ object_class_property_iter_init(&iter, klass);
+ } else {
+ obj = object_new(typename);
+ object_property_iter_init(&iter, obj);
+ }
+ while ((prop = object_property_iter_next(&iter))) {
+ ObjectPropertyInfo *info;
+ ObjectPropertyInfoList *entry;
+
+ info = g_malloc0(sizeof(*info));
+ info->name = g_strdup(prop->name);
+ info->type = g_strdup(prop->type);
+ info->has_description = !!prop->description;
+ info->description = g_strdup(prop->description);
+
+ entry = g_malloc0(sizeof(*entry));
+ entry->value = info;
+ entry->next = prop_list;
+ prop_list = entry;
+ }
+
+ object_unref(obj);
+
+ return prop_list;
+}
+
CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
{
return arch_query_cpu_definitions(errp);
