+/**
+ * udev_enumerate_add_match_tag:
+ * @udev_enumerate: context
+ * @tag: filter for a tag of the device to include in the list
+ *
+ * Returns: 0 on success, otherwise a negative error value.
+ */
+int udev_enumerate_add_match_tag(struct udev_enumerate *udev_enumerate, const char *tag)
+{
+ if (udev_enumerate == NULL)
+ return -EINVAL;
+ if (tag == NULL)
+ return 0;
+ if (udev_list_entry_add(udev_enumerate_get_udev(udev_enumerate),
+ &udev_enumerate->tags_match_list, tag, NULL, 1, 0) == NULL)
+ return -ENOMEM;
+ return 0;
+}
+
+/**
+ * udev_enumerate_add_match_is_initialized:
+ * @udev_enumerate: context
+ *
+ * Match only devices which udev has set up already. This makes
+ * sure, that the device node permissions and context are properly set
+ * and that network devices are fully renamed.
+ *
+ * Usually, devices which are found in the kernel but not already
+ * handled by udev, have still pending events. Services should subscribe
+ * to monitor events and wait for these devices to become ready, instead
+ * of using uninitialized devices.
+ *
+ * For now, this will not affect devices which do not have a device node
+ * and are not network interfaces.
+ *
+ * Returns: 0 on success, otherwise a negative error value.
+ */
+int udev_enumerate_add_match_is_initialized(struct udev_enumerate *udev_enumerate)
+{
+ if (udev_enumerate == NULL)
+ return -EINVAL;
+ udev_enumerate->match_is_initialized = true;
+ return 0;
+}
+