server: Add get_sd and set_sd object operations to allow the security descriptor to be stored somewhere other than server memory, such as on disk.
diff --git a/server/registry.c b/server/registry.c
index 8d17309..ac740ef 100644
--- a/server/registry.c
+++ b/server/registry.c
@@ -149,6 +149,8 @@
     no_signal,               /* signal */
     no_get_fd,               /* get_fd */
     key_map_access,          /* map_access */
+    default_get_sd,          /* get_sd */
+    default_set_sd,          /* set_sd */
     no_lookup_name,          /* lookup_name */
     no_open_file,            /* open_file */
     key_close_handle,        /* close_handle */