server: Add an open_file() function to the object operations.
diff --git a/server/handle.c b/server/handle.c
index 9fc8b60..4b35e8b 100644
--- a/server/handle.c
+++ b/server/handle.c
@@ -112,6 +112,7 @@
     no_get_fd,                       /* get_fd */
     no_map_access,                   /* map_access */
     no_lookup_name,                  /* lookup_name */
+    no_open_file,                    /* open_file */
     no_close_handle,                 /* close_handle */
     handle_table_destroy             /* destroy */
 };