Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 31 insertions, 0 deletions

diff --git a/qobject/qnull.c b/qobject/qnull.c
new file mode 100644
index 000000000..b26b36821
--- /dev/null
+++ b/qobject/qnull.c
@@ -0,0 +1,31 @@
+/*
+ * QNull
+ *
+ * Copyright (C) 2015 Red Hat, Inc.
+ *
+ * Authors:
+ *  Markus Armbruster <armbru@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1
+ * or later.  See the COPYING.LIB file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/qmp/qnull.h"
+#include "qobject-internal.h"
+
+QNull qnull_ = {
+    .base = {
+        .type = QTYPE_QNULL,
+        .refcnt = 1,
+    },
+};
+
+/**
+ * qnull_is_equal(): Always return true because any two QNull objects
+ * are equal.
+ */
+bool qnull_is_equal(const QObject *x, const QObject *y)
+{
+    return true;
+}