1 files changed, 57 insertions, 0 deletions
diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
index 5796ed2619..7a9a1d6404 100644
--- a/hw/core/qdev-properties-system.c
+++ b/hw/core/qdev-properties-system.c
@@ -21,6 +21,7 @@
 #include "qemu/ctype.h"
 #include "qemu/cutils.h"
 #include "qemu/units.h"
+#include "qemu/uuid.h"
 #include "qemu/error-report.h"
 #include "qdev-prop-internal.h"
 
@@ -1106,3 +1107,59 @@ const PropertyInfo qdev_prop_pcie_link_width = {
     .set = set_prop_pcielinkwidth,
     .set_default_value = qdev_propinfo_set_default_value_enum,
 };
+
+/* --- UUID --- */
+
+static void get_uuid(Object *obj, Visitor *v, const char *name, void *opaque,
+                     Error **errp)
+{
+    Property *prop = opaque;
+    QemuUUID *uuid = qdev_get_prop_ptr(obj, prop);
+    char buffer[UUID_FMT_LEN + 1];
+    char *p = buffer;
+
+    qemu_uuid_unparse(uuid, buffer);
+
+    visit_type_str(v, name, &p, errp);
+}
+
+#define UUID_VALUE_AUTO        "auto"
+
+static void set_uuid(Object *obj, Visitor *v, const char *name, void *opaque,
+                    Error **errp)
+{
+    DeviceState *dev = DEVICE(obj);
+    Property *prop = opaque;
+    QemuUUID *uuid = qdev_get_prop_ptr(obj, prop);
+    char *str;
+
+    if (dev->realized) {
+        qdev_prop_set_after_realize(dev, name, errp);
+        return;
+    }
+
+    if (!visit_type_str(v, name, &str, errp)) {
+        return;
+    }
+
+    if (!strcmp(str, UUID_VALUE_AUTO)) {
+        qemu_uuid_generate(uuid);
+    } else if (qemu_uuid_parse(str, uuid) < 0) {
+        error_set_from_qdev_prop_error(errp, EINVAL, obj, prop, str);
+    }
+    g_free(str);
+}
+
+static void set_default_uuid_auto(ObjectProperty *op, const Property *prop)
+{
+    object_property_set_default_str(op, UUID_VALUE_AUTO);
+}
+
+const PropertyInfo qdev_prop_uuid = {
+    .name  = "str",
+    .description = "UUID (aka GUID) or \"" UUID_VALUE_AUTO
+        "\" for random value (default)",
+    .get   = get_uuid,
+    .set   = set_uuid,
+    .set_default_value = set_default_uuid_auto,
+};