server: Add an open_file() function to the object operations.
diff --git a/server/debugger.c b/server/debugger.c
index 72de05f..85ab63a 100644
--- a/server/debugger.c
+++ b/server/debugger.c
@@ -78,6 +78,7 @@
     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 */
     debug_event_destroy            /* destroy */
 };
@@ -98,6 +99,7 @@
     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 */
     debug_ctx_destroy              /* destroy */
 };