qmp: fix object-add assert() without props
Since commit ad739706bbadee49, user_creatable_add_type() expects to be
given a qdict. However, if object-add is called without props, you reach
the assert: "qemu/qom/object_interfaces.c:115: user_creatable_add_type:
Assertion `qdict' failed.", because the qdict isn't created in this
case (it's optional).
Furthermore, qmp_input_visitor_new() is not meant to be called without a
dict, and a further commit will assert in this situation.
If none given, create an empty qdict in qmp to avoid the
user_creatable_add_type() assert(qdict).
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20160922203927.28241-2-marcandre.lureau@redhat.com>
Tested-by: Xiao Long Jiang <zxiaol@linux.vnet.ibm.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
diff --git a/qmp.c b/qmp.c
index 621f6ae..b3ba9ef 100644
--- a/qmp.c
+++ b/qmp.c
@@ -660,7 +660,7 @@
void qmp_object_add(const char *type, const char *id,
bool has_props, QObject *props, Error **errp)
{
- const QDict *pdict = NULL;
+ QDict *pdict;
Visitor *v;
Object *obj;
@@ -670,14 +670,18 @@
error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
return;
}
+ QINCREF(pdict);
+ } else {
+ pdict = qdict_new();
}
- v = qmp_input_visitor_new(props, true);
+ v = qmp_input_visitor_new(QOBJECT(pdict), true);
obj = user_creatable_add_type(type, id, pdict, v, errp);
visit_free(v);
if (obj) {
object_unref(obj);
}
+ QDECREF(pdict);
}
void qmp_object_del(const char *id, Error **errp)
