  251	AUE_RFORK	NOPROTO	{ int rfork(int flags); }
 Index: head/sys/kern/kern_ffclock.c
 ===================================================================
---- head.orig/sys/kern/kern_ffclock.c	2011-11-02 16:30:56.000000000 +1100
-+++ head/sys/kern/kern_ffclock.c	2011-11-02 16:31:48.000000000 +1100
+--- head.orig/sys/kern/kern_ffclock.c	2011-11-07 11:54:32.000000000 +1100
++++ head/sys/kern/kern_ffclock.c	2011-11-07 11:54:34.000000000 +1100
 @@ -26,29 +26,40 @@
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.

+.Ft int
+.Fn ffclock_setestimate "struct ffclock_estimate *cest"
+.Sh DESCRIPTION
+The
+.Fn ffclock_getcounter
+system call allows the calling process to retrieve the current value of the

 251	AUE_RFORK	STD	{ int rfork(int flags); }
Index: head/sys/sys/timeffc.h
===================================================================
--- head.orig/sys/sys/timeffc.h	2011-11-07 11:54:32.000000000 +1100
+++ head/sys/sys/timeffc.h	2011-11-07 11:54:34.000000000 +1100
@@ -157,13 +157,22 @@ void ffclock_getnanouptime(struct timesp
 void ffclock_getmicrouptime(struct timeval *tvp);
 
