server: Add infrastructure for ioctl server request.
diff --git a/server/change.c b/server/change.c
index c7d5823..e996d49 100644
--- a/server/change.c
+++ b/server/change.c
@@ -187,6 +187,7 @@
     default_poll_event,          /* poll_event */
     no_flush,                    /* flush */
     dir_get_fd_type,             /* get_fd_type */
+    default_fd_ioctl,            /* ioctl */
     default_fd_queue_async,      /* queue_async */
     default_fd_reselect_async,   /* reselect_async */
     default_fd_cancel_async      /* cancel_async */
@@ -520,6 +521,7 @@
     inotify_poll_event,          /* poll_event */
     NULL,                        /* flush */
     NULL,                        /* get_fd_type */
+    NULL,                        /* ioctl */
     NULL,                        /* queue_async */
     NULL,                        /* reselect_async */
     NULL,                        /* cancel_async */