+extern int guestfs_is_ready (guestfs_h *handle);
+extern int guestfs_is_config (guestfs_h *handle);
+extern int guestfs_is_launching (guestfs_h *handle);
+extern int guestfs_is_busy (guestfs_h *handle);
+extern int guestfs_get_state (guestfs_h *handle);