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/semaphore.c b/server/semaphore.c
index cd4080f..af651e9 100644
--- a/server/semaphore.c
+++ b/server/semaphore.c
@@ -59,6 +59,8 @@
     semaphore_signal,              /* signal */
     no_get_fd,                     /* get_fd */
     semaphore_map_access,          /* map_access */
+    default_get_sd,                /* get_sd */
+    default_set_sd,                /* set_sd */
     no_lookup_name,                /* lookup_name */
     no_open_file,                  /* open_file */
     no_close_handle,               /* close_handle */