svn commit: r289421 - in head/etc: . mtree ntp
Cy Schubert
Cy.Schubert at komquats.com
Sun Oct 18 02:00:25 UTC 2015
Agreed, this would be best. There was a suggestion a GSoC person could do
it (though I'm willing to roll up my sleeves if necessary).
--
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.
In message <8154492E-C29E-41B1-A13B-34E33586DEC6 at bsdimp.com>, Warner Losh
write
s:
>
>
> --Apple-Mail=_60572A67-97E7-4200-AEF6-88DC6354712B
> Content-Transfer-Encoding: quoted-printable
> Content-Type: text/plain;
> charset=utf-8
>
> Until the next leap second=E2=80=A6. It would be better to just
> always try to grab the latest one=E2=80=A6 Can we put something
> in periodic to do that so users that have releases
> that are older than 6 months aren=E2=80=99t screwed?
>
> Warner
>
> > On Oct 16, 2015, at 8:04 AM, Cy Schubert <cy at FreeBSD.org> wrote:
> >=20
> > Author: cy
> > Date: Fri Oct 16 14:04:16 2015
> > New Revision: 289421
> > URL: https://svnweb.freebsd.org/changeset/base/289421
> >=20
> > Log:
> > Add default leap-seconds file. This should help ntp networks get the
> > leap second date correct
> >=20
> > Updates to the file can be obtained from ftp://time.nist.gov/pub/ or
> > ftp://tycho.usno.navy.mil/pub/ntp/.
> >=20
> > Suggested by: dwmalone
> > Reviewed by: roberto, dwmalone, delphij
> > Approved by: roberto
> > MFC after: 1 week
> >=20
> > 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
> >=20
> > Modified: head/etc/Makefile
> > =
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D
> > --- head/etc/Makefile Fri Oct 16 12:53:22 2015 (r289420)
> > +++ head/etc/Makefile Fri Oct 16 14:04:16 2015 (r289421)
> > @@ -240,6 +240,9 @@ distribution:
> > ${_+_}cd ${.CURDIR}/defaults; ${MAKE} install
> > ${_+_}cd ${.CURDIR}/devd; ${MAKE} install
> > ${_+_}cd ${.CURDIR}/gss; ${MAKE} install
> > +.if ${MK_NTP} !=3D "no"
> > + ${_+_}cd ${.CURDIR}/ntp; ${MAKE} install
> > +.endif
> > ${_+_}cd ${.CURDIR}/periodic; ${MAKE} install
> > .if ${MK_PKGBOOTSTRAP} !=3D "no"
> > ${_+_}cd ${.CURDIR}/pkg; ${MAKE} install
> >=20
> > Modified: head/etc/mtree/BSD.var.dist
> > =
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D
> > --- 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=3D0700
> > ..
> > + ntp mode=3D0700
> > + ..
> > pkg
> > ..
> > ports
> >=20
> > Modified: head/etc/ntp.conf
> > =
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D
> > --- head/etc/ntp.conf Fri Oct 16 12:53:22 2015 (r289420)
> > +++ head/etc/ntp.conf Fri Oct 16 14:04:16 2015 (r289421)
> > @@ -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"
> >=20
> > Added: head/etc/ntp/Makefile
> > =
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D
> > --- /dev/null 00:00:00 1970 (empty, because file is newly added)
> > +++ head/etc/ntp/Makefile Fri Oct 16 14:04:16 2015 =
> (r289421)
> > @@ -0,0 +1,10 @@
> > +# $FreeBSD$
> > +
> > +NO_OBJ=3D
> > +
> > +FILES=3D leap-seconds
> > +
> > +FILESDIR=3D /etc/ntp
> > +FILESMODE=3D 644
> > +
> > +.include <bsd.prog.mk>
> >=20
> > Added: head/etc/ntp/leap-seconds
> > =
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D
> > --- /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 =3D X/86400 + 15020
> > +#
> > +# DTAI: The difference DTAI=3D 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
> >=20
>
>
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