--- tftpd_file.c	Tue Mar 12 05:26:18 2002
+++ tftpd_file_diff.c	Thu Jun  5 20:31:06 2003
@@ -357,7 +357,8 @@
      else
      {
           strcpy(filename, directory);
-          strncat(filename, data->tftp_options[OPT_FILENAME].value, VAL_SIZE);
+          strncat(filename, data->tftp_options[OPT_FILENAME].value, 
+		VAL_SIZE - strlen( directory ) - 1 );
      }
 
      /* If the filename contain /../ sequences, we forbid the access */