Date: Tue, 16 Mar 1999 21:10:01 -0800 (PST) From: Brian Haug <haug@hawaii.conterra.com> To: freebsd-bugs@FreeBSD.org Subject: bin/10611: timed enhancement Message-ID: <199903170510.VAA57238@freefall.freebsd.org>
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The following reply was made to PR bin/10611; it has been noted by GNATS.
From: Brian Haug <haug@hawaii.conterra.com>
To: FreeBSD-gnats-submit@freebsd.org
Cc:
Subject: bin/10611: timed enhancement
Date: Tue, 16 Mar 1999 00:12:33 -0500 (EST)
>Number: 10611
>Category: bin
>Synopsis: timed enhancement
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Mon Mar 15 21:20:01 PST 1999
>Closed-Date:
>Last-Modified:
>Originator: Brian Haug
>Release: FreeBSD 3.1-RELEASE i386 (submitting from different machine)
>Organization:
None
>Environment:
Generic BSD environemtn with timed protocol in use
>Description:
Updated man page to correctly describe what happens when timed
starts (does doesn't automatically set the date, but will adjust
if delta is reasonable). Added -a option which will only adjust
the time with adjtime(2), and a -A option which specifies the max
adjustment which will be made with adjtime(2).
>How-To-Repeat:
Not applicable?
>Fix:
The BRH define was used for me to keep track of the changes. I suggest
removinging it.
*** /usr/src/usr.sbin/timed/timed/timed.c.old Sun Mar 14 08:27:39 1999
--- /usr/src/usr.sbin/timed/timed/timed.c Sun Mar 14 08:30:18 1999
***************
*** 80,85 ****
--- 80,88 ----
struct netinfo *nettab = 0;
struct netinfo *slavenet;
int Mflag;
+ #ifdef BRH
+ int aflag;
+ #endif
int justquit = 0;
int debug;
***************
*** 114,119 ****
--- 117,125 ----
#endif
static void usage __P((void));
+ #ifdef BRH
+ int MAXADJ = DEF_MAXADJ;
+ #endif
/*
* The timedaemons synchronize the clocks of hosts in a local area network.
***************
*** 176,183 ****
--- 182,202 ----
#endif /* sgi */
opterr = 0;
+ #ifdef BRH
+ while ((c = getopt(argc, argv, "Mtdn:i:F:G:P:aA:")) != -1) {
+ #else
while ((c = getopt(argc, argv, "Mtdn:i:F:G:P:")) != -1) {
+ #endif
switch (c) {
+ #ifdef BRH
+ case 'A':
+ MAXADJ = atol(optarg);
+ break;
+ case 'a':
+ /* only do adjtime */
+ aflag = 1;
+ break;
+ #endif
case 'M':
Mflag = 1;
break;
***************
*** 550,556 ****
--- 569,579 ----
"usage: timed [-dtM] [-i net|-n net] [-F host1 host2 ...] [-G netgp]\n");
#else
fprintf(stderr,
+ #ifdef BRH
+ "usage: timed [-dtMa] [-A max_adjtime ] [-i net|-n net] [-F host1 host2 ...]\n");
+ #else
"usage: timed [-dtM] [-i net|-n net] [-F host1 host2 ...]\n");
+ #endif
#endif /* HAVENIS */
#endif /* sgi */
exit(1);
*** /usr/src/usr.sbin/timed/timed/timed.8.old Tue Oct 21 23:19:49 1997
--- /usr/src/usr.sbin/timed/timed/timed.8 Sun Mar 14 08:27:14 1999
***************
*** 45,50 ****
--- 45,52 ----
.Op Fl i Ar network
.Op Fl n Ar network
.Op Fl F Ar host1 host2 ...
+ .Op Fl a
+ .Op Fl A Ar max_adjtime
.Sh DESCRIPTION
This
is a time server daemon and is normally invoked
***************
*** 67,76 ****
scheme.
When
.Nm
! is started on a machine, it asks the master for the network time
! and sets the host's clock to that time.
! After that, it accepts synchronization messages periodically sent by
! the master and calls
.Xr adjtime 2
to perform the needed corrections on the host's clock.
.Pp
--- 69,77 ----
scheme.
When
.Nm
! is started on a machine, searches for a master and starts adjusting the time
! based on messages received.
! If the clock correction is large the time is explicitly set, otherwise it calls
.Xr adjtime 2
to perform the needed corrections on the host's clock.
.Pp
***************
*** 153,158 ****
--- 154,172 ----
If it finds masters on more than one network, it chooses one network
on which to be a "slave," and then periodically checks the other
networks to see if the masters there have disappeared.
+ The
+ .Fl a
+ option forces
+ .Nm timed
+ to only adjust the time using the
+ .Xr adjtime 2 ) ,
+ system call.
+ The
+ .Fl A
+ option forces
+ .Nm timed
+ to explicitly set the time if the difference in the clocks exceeds
+ the value of max_adjtime seconds.
.Pp
One way to synchronize a group of machines is to use an
.Tn NTP
*** /usr/src/usr.sbin/timed/timed/globals.h.old Fri Oct 31 05:33:05 1997
--- /usr/src/usr.sbin/timed/timed/globals.h Sun Mar 14 08:48:05 1999
***************
*** 1,3 ****
--- 1,4 ----
+ #define BRH
/*-
* Copyright (c) 1985, 1993
* The Regents of the University of California. All rights reserved.
***************
*** 73,79 ****
--- 74,86 ----
#define SAMPLEINTVL 240 /* synch() freq for master in sec */
+ #ifdef BRH
+ #define MAXADJ (maxadj) /* now a variable */
+ extern int maxadj;
+ #define DEF_MAXADJ 20 /* max adjtime() correction in sec */
+ #else
#define MAXADJ 20 /* max adjtime() correction in sec */
+ #endif
#define MAX_TRIM 3000000 /* max drift in nsec/sec, 0.3% */
#define BIG_ADJ (MAX_TRIM/1000*SAMPLEINTVL*2) /* max good adj */
*** /usr/src/usr.sbin/timed/timed/master.c.old Mon Mar 15 10:20:57 1999
--- /usr/src/usr.sbin/timed/timed/master.c Sun Mar 14 08:32:36 1999
***************
*** 379,385 ****
--- 379,389 ----
adj_msg_time(msg,&otime);
timevalsub(&ntime, &msg->tsp_time, &otime);
+ #ifdef BRH
+ if (aflag || (ntime.tv_sec < MAXADJ && ntime.tv_sec > -MAXADJ)) {
+ #else
if (ntime.tv_sec < MAXADJ && ntime.tv_sec > -MAXADJ) {
+ #endif
/*
* do not change the clock if we can adjust it
*/
*** /usr/src/usr.sbin/timed/timed/slave.c.old Mon Mar 15 09:57:54 1999
--- /usr/src/usr.sbin/timed/timed/slave.c Sun Mar 14 08:34:26 1999
***************
*** 282,288 ****
--- 282,292 ----
setmaster(msg);
timevalsub(&ntime, &msg->tsp_time, &otime);
+ #ifdef BRH
+ if (aflag || (ntime.tv_sec < MAXADJ && ntime.tv_sec > -MAXADJ)) {
+ #else
if (ntime.tv_sec < MAXADJ && ntime.tv_sec > -MAXADJ) {
+ #endif
/*
* do not change the clock if we can adjust it
*/
*** /usr/src/usr.sbin/timed/timed/correct.c.old Mon Mar 15 10:23:28 1999
--- /usr/src/usr.sbin/timed/timed/correct.c Mon Mar 15 10:22:40 1999
***************
*** 128,134 ****
--- 128,138 ----
return;
adj = *corr;
+ #ifdef BRH
+ if (aflag || (adj.tv_sec < MAXADJ && adj.tv_sec > - MAXADJ)) {
+ #else
if (adj.tv_sec < MAXADJ && adj.tv_sec > - MAXADJ) {
+ #endif
delta = adj.tv_sec*1000000 + adj.tv_usec;
/* If the correction is less than the minimum round
* trip time for an ICMP packet, and thus
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