- Rename getpty() to xgetpty() and adjust callers.

- Rewrite kbd_mode and setconsole
- Introduce and use console_make_active() and xopen_xwrite_close()
- honour buffer-reservation method as set by the user (dumpkmap, loadkmap)
- shrink rtcwake and some console-tools

  Saves about 270 Bytes

util-linux/script.c

@@ -69,10 +69,7 @@ int script_main(int argc ATTRIBUTE_UNUSED, char **argv)
 		shell = DEFAULT_SHELL;
 	}
 
-	pty = getpty(pty_line);
-	if (pty < 0) {
-		bb_perror_msg_and_die("can't get pty");
-	}
+	pty = xgetpty(pty_line);
 
 	/* get current stdin's tty params */
 	attr_ok = tcgetattr(0, &tt);