svn commit: r289421 - in head/etc: . mtree ntp
Cy Schubert
Cy.Schubert at komquats.com
Sun Oct 18 02:00:25 UTC 2015
In message <1445109956.71631.44.camel at freebsd.org>, Ian Lepore writes:
> On Sat, 2015-10-17 at 13:19 -0600, Warner Losh wrote:
> > Until the next leap secondÂ
. It would be better to just
> > always try to grab the latest oneÂ
Can we put something
> > in periodic to do that so users that have releases
> > that are older than 6 months arenÂ’t screwed?
> >
> > Warner
> >
>
> I think writing a leapfeatcher task for periodic daily|weekly would
> make a nice junior-hacker task. It would be nice if it only hit the
> network when expiration of the installed file is imminent (like within
> a month), and only if both ntp and the leapfile feature are enabled and
> stuff like that. It should probably have a configurable list of URLs t
> o fetch from.
Enablement through and rc.conf option possibly? Not that this is an elegant
solution though.
--
Cheers,
Cy Schubert <Cy.Schubert at komquats.com> or <Cy.Schubert at cschubert.com>
FreeBSD UNIX: <cy at FreeBSD.org> Web: http://www.FreeBSD.org
The need of the many outweighs the greed of the few.
>
> -- Ian
>
> > > On Oct 16, 2015, at 8:04 AM, Cy Schubert <cy at FreeBSD.org> wrote:
> > >
> > > Author: cy
> > > Date: Fri Oct 16 14:04:16 2015
> > > New Revision: 289421
> > > URL: https://svnweb.freebsd.org/changeset/base/289421
> > >
> > > Log:
> > > Add default leap-seconds file. This should help ntp networks get
> > > the
> > > leap second date correct
> > >
> > > Updates to the file can be obtained from ftp://time.nist.gov/pub/
> > > or
> > > ftp://tycho.usno.navy.mil/pub/ntp/.
> > >
> > > Suggested by: dwmalone
> > > Reviewed by: roberto, dwmalone, delphij
> > > Approved by: roberto
> > > MFC after: 1 week
> > >
> > > Added:
> > > head/etc/ntp/
> > > head/etc/ntp/Makefile (contents, props changed)
> > > head/etc/ntp/leap-seconds (contents, props changed)
> > > Modified:
> > > head/etc/Makefile
> > > head/etc/mtree/BSD.var.dist
> > > head/etc/ntp.conf
> > >
> > > Modified: head/etc/Makefile
> > > ===================================================================
> > > ===========
> > > --- head/etc/Makefile Fri Oct 16 12:53:22 2015 (r2894
> > > 20)
> > > +++ head/etc/Makefile Fri Oct 16 14:04:16 2015 (r2894
> > > 21)
> > > @@ -240,6 +240,9 @@ distribution:
> > > ${_+_}cd ${.CURDIR}/defaults; ${MAKE} install
> > > ${_+_}cd ${.CURDIR}/devd; ${MAKE} install
> > > ${_+_}cd ${.CURDIR}/gss; ${MAKE} install
> > > +.if ${MK_NTP} != "no"
> > > + ${_+_}cd ${.CURDIR}/ntp; ${MAKE} install
> > > +.endif
> > > ${_+_}cd ${.CURDIR}/periodic; ${MAKE} install
> > > .if ${MK_PKGBOOTSTRAP} != "no"
> > > ${_+_}cd ${.CURDIR}/pkg; ${MAKE} install
> > >
> > > Modified: head/etc/mtree/BSD.var.dist
> > > ===================================================================
> > > ===========
> > > --- head/etc/mtree/BSD.var.dist Fri Oct 16 12:53:22 2015
> > > (r289420)
> > > +++ head/etc/mtree/BSD.var.dist Fri Oct 16 14:04:16 2015
> > > (r289421)
> > > @@ -46,6 +46,8 @@
> > > ..
> > > ipf mode=0700
> > > ..
> > > + ntp mode=0700
> > > + ..
> > > pkg
> > > ..
> > > ports
> > >
> > > Modified: head/etc/ntp.conf
> > > ===================================================================
> > > ===========
> > > --- head/etc/ntp.conf Fri Oct 16 12:53:22 2015 (r2894
> > > 20)
> > > +++ head/etc/ntp.conf Fri Oct 16 14:04:16 2015 (r2894
> > > 21)
> > > @@ -77,3 +77,8 @@ restrict 127.127.1.0
> > > #
> > > #server 127.127.1.0
> > > #fudge 127.127.1.0 stratum 10
> > > +
> > > +# See
> > > http://support.ntp.org/bin/view/Support/ConfiguringNTP#Section_6.14
> > > .
> > > +# for documentation regarding leapfile. Updates to the file can be
> > > obtained
> > > +# from ftp://time.nist.gov/pub/ or
> > > ftp://tycho.usno.navy.mil/pub/ntp/.
> > > +leapfile "/etc/ntp/leap-seconds"
> > >
> > > Added: head/etc/ntp/Makefile
> > > ===================================================================
> > > ===========
> > > --- /dev/null 00:00:00 1970 (empty, because file is
> > > newly added)
> > > +++ head/etc/ntp/Makefile Fri Oct 16 14:04:16 2015 (r
> > > 289421)
> > > @@ -0,0 +1,10 @@
> > > +# $FreeBSD$
> > > +
> > > +NO_OBJ=
> > > +
> > > +FILES= leap-seconds
> > > +
> > > +FILESDIR= /etc/ntp
> > > +FILESMODE= 644
> > > +
> > > +.include <bsd.prog.mk>
> > >
> > > Added: head/etc/ntp/leap-seconds
> > > ===================================================================
> > > ===========
> > > --- /dev/null 00:00:00 1970 (empty, because file is
> > > newly added)
> > > +++ head/etc/ntp/leap-seconds Fri Oct 16 14:04:16 2015
> > > (r289421)
> > > @@ -0,0 +1,119 @@
> > > +#
> > > +# $FreeBSD$
> > > +#
> > > +# ATOMIC TIME.
> > > +# The Coordinated Universal Time (UTC) is the reference
> > > time scale derived
> > > +# from The "Temps Atomique International" (TAI) calculated
> > > by the Bureau
> > > +# International des Poids et Mesures (BIPM) using a
> > > worldwide network of atomic
> > > +# clocks. UTC differs from TAI by an integer number of
> > > seconds; it is the basis
> > > +# of all activities in the world.
> > > +#
> > > +#
> > > +# ASTRONOMICAL TIME (UT1) is the time scale based on the
> > > rate of rotation of the earth.
> > > +# It is now mainly derived from Very Long Baseline
> > > Interferometry (VLBI). The various
> > > +# irregular fluctuations progressively detected in the
> > > rotation rate of the Earth lead
> > > +# in 1972 to the replacement of UT1 by UTC as the reference
> > > time scale.
> > > +#
> > > +#
> > > +# LEAP SECOND
> > > +# Atomic clocks are more stable than the rate of the earth
> > > rotatiob since the later
> > > +# undergoes a full range of geophysical perturbations at
> > > various time scales (lunisolar
> > > +# and core-mantle torques,atmospheric and oceanic effetcs,
> > > ...)
> > > +# Leap seconds are needed to keep the two time scales in
> > > agreement, i.e. UT1-UTC smaller
> > > +# than 0.9 second. So, when necessary a "leap second" is
> > > introduced in UTC.
> > > +# Since the adoption of this system in 1972 it has been
> > > necessary to add 26 seconds to UTC,
> > > +# firstly due to the initial choice of the value of the
> > > second (1/86400 mean solar day of
> > > +# the year 1820) and secondly to the general slowing down
> > > of the Earth's rotation. It is
> > > +# theorically possible to have a negative leap second (a
> > > second removed from UTC), but so far,
> > > +# all leap seconds have been positive (a second has been
> > > added to UTC). Based on what we know about the earth's rotation,
> > > +# it is unlikely that we will ever have a negative leap
> > > second.
> > > +#
> > > +#
> > > +# HISTORY
> > > +# The first leap second was added on June 30, 1972. Until
> > > 2000, it was necessary in average to add a leap second at a rate
> > > +# of 1 to 2 years. Since 2000, due to the fact that the
> > > earth rate of rotation is accelerating, leap seconds are introduced
> > > +# with an average frequency of 3 to 4 years.
> > > +#
> > > +#
> > > +# RESPONSABILITY OF THE DECISION TO INTRODUCE A LEAP SECOND
> > > IN UTC
> > > +# The decision to introduce a leap second in UTC is the
> > > responsibility of the Earth Orientation Center of
> > > +# the International Earth Rotation and reference System
> > > Service (IERS). This center is located at Paris
> > > +# Observatory. According to international agreements, leap
> > > second date have to occur at fixed date :
> > > +# first preference is given to the end of December and
> > > June, and second preference at the end of March
> > > +# and September. Since the system was introduced in 1972,
> > > only dates in June and December were used.
> > > +#
> > > +# Questions or comments to:
> > > +# Daniel Gambis, daniel.gambis at obspm.fr
> > > +# Christian Bizouard:
> > > christian.bizouard at obspm.fr
> > > +# Earth orientation Center of the IERS
> > > +# Paris Observatory, France
> > > +#
> > > +#
> > > +#
> > > +# VALIDITY OF THE FILE
> > > +# It is important to express the validity of the file.
> > > These next two dates are
> > > +# given in units of seconds since 1900.0.
> > > +#
> > > +# 1) Last update of the file.
> > > +#
> > > +# Updated through IERS Bulletin C (
> > > ftp://hpiers.obspm.fr/iers/bul/bulc/bulletinc.dat)
> > > +#
> > > +# The following line shows the last update of this file in
> > > NTP timestamp:
> > > +#
> > > +#$ 3645216000
> > > +#
> > > +# 2) Expiration date of the file given on a semi-annual
> > > basis: last June or last December
> > > +#
> > > +# File expires on 28 December 2015
> > > +#
> > > +# Expire date in NTP timestamp:
> > > +#
> > > +#@ 3660249600
> > > +#
> > > +#
> > > +# LIST OF LEAP SECONDS
> > > +# NTP timestamp (X parameter) is the number of seconds
> > > since 1900.0
> > > +#
> > > +# MJD: The Modified Julian Day number. MJD = X/86400 +
> > > 15020
> > > +#
> > > +# DTAI: The difference DTAI= TAI-UTC in units of seconds
> > > +# It is the quantity to add to UTC to get the time in TAI
> > > +#
> > > +# Day Month Year : epoch in clear
> > > +#
> > > +#NTP Time DTAI Day Month Year
> > > +#
> > > +2272060800 10 # 1 Jan 1972
> > > +2287785600 11 # 1 Jul 1972
> > > +2303683200 12 # 1 Jan 1973
> > > +2335219200 13 # 1 Jan 1974
> > > +2366755200 14 # 1 Jan 1975
> > > +2398291200 15 # 1 Jan 1976
> > > +2429913600 16 # 1 Jan 1977
> > > +2461449600 17 # 1 Jan 1978
> > > +2492985600 18 # 1 Jan 1979
> > > +2524521600 19 # 1 Jan 1980
> > > +2571782400 20 # 1 Jul 1981
> > > +2603318400 21 # 1 Jul 1982
> > > +2634854400 22 # 1 Jul 1983
> > > +2698012800 23 # 1 Jul 1985
> > > +2776982400 24 # 1 Jan 1988
> > > +2840140800 25 # 1 Jan 1990
> > > +2871676800 26 # 1 Jan 1991
> > > +2918937600 27 # 1 Jul 1992
> > > +2950473600 28 # 1 Jul 1993
> > > +2982009600 29 # 1 Jul 1994
> > > +3029443200 30 # 1 Jan 1996
> > > +3076704000 31 # 1 Jul 1997
> > > +3124137600 32 # 1 Jan 1999
> > > +3345062400 33 # 1 Jan 2006
> > > +3439756800 34 # 1 Jan 2009
> > > +3550089600 35 # 1 Jul 2012
> > > +3644697600 36 # 1 Jul 2015
> > > +#
> > > +# In order to verify the integrity of this file, a hash
> > > code
> > > +# has been generated. For more information how to use
> > > +# this hash code, please consult the README file under the
> > > +# 'sha' repertory.
> > > +#
> > > +#h 620ba8af 37900668 95ac09ba d77640f9 6fd75493
> > >
> >
>
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