I have added

	TIOCTIMESTAMP _IOR('t', 89, struct timeval)
This is for precision timekeeping using xntpd and similar stuff.  The semantics
of this call are: return a timestamp, taken as soon as possible after the
last interrupt on the device.  Patch to sio.c will be forthcomming.

diff --git a/sys/sys/ioctl.h b/sys/sys/ioctl.h
index 5737e04..2b1aa2a 100644 (file)
--- a/sys/sys/ioctl.h
+++ b/sys/sys/ioctl.h
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *     from: @(#)ioctl.h       7.19 (Berkeley) 6/26/91
  * SUCH DAMAGE.
  *
  *     from: @(#)ioctl.h       7.19 (Berkeley) 6/26/91

- *     $Id: ioctl.h,v 1.5 1993/11/14 23:29:49 ache Exp $
+ *     $Id: ioctl.h,v 1.6 1993/12/19 00:55:15 wollman Exp $

  */
 
 #ifndef        _IOCTL_H_
  */
 
 #ifndef        _IOCTL_H_


@@ -151,6 +151,8 @@ struct ttysize {
 #define        TIOCMGBIDIR     _IOR('t', 92, int)      /* modem: get bidir cap. */
 #define TIOCMSDTRWAIT  _IOW('t', 91, int)      /* modem: set wait on close */
 #define TIOCMGDTRWAIT  _IOR('t', 90, int)      /* modem: get wait on close */
 #define        TIOCMGBIDIR     _IOR('t', 92, int)      /* modem: get bidir cap. */
 #define TIOCMSDTRWAIT  _IOW('t', 91, int)      /* modem: set wait on close */
 #define TIOCMGDTRWAIT  _IOR('t', 90, int)      /* modem: get wait on close */

+#define TIOCTIMESTAMP  _IOR('t', 89, struct timeval)   /* get timestamp of 
+                                                last interrupt for xntp. */

 
 #define        TTYDISC         0               /* termios tty line discipline */
 #define        NETLDISC        1               /* line discip for berk net */
 
 #define        TTYDISC         0               /* termios tty line discipline */
 #define        NETLDISC        1               /* line discip for berk net */