From owner-svn-src-vendor@freebsd.org Tue Aug 18 14:10:06 2015 Return-Path: Delivered-To: svn-src-vendor@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 84CFC9BC570; Tue, 18 Aug 2015 14:10:06 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 7429B2C3; Tue, 18 Aug 2015 14:10:06 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.70]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id t7IEA66Z052256; Tue, 18 Aug 2015 14:10:06 GMT (envelope-from avg@FreeBSD.org) Received: (from avg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id t7IEA6hU052254; Tue, 18 Aug 2015 14:10:06 GMT (envelope-from avg@FreeBSD.org) Message-Id: <201508181410.t7IEA6hU052254@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: avg set sender to avg@FreeBSD.org using -f From: Andriy Gapon Date: Tue, 18 Aug 2015 14:10:06 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r286889 - vendor-sys/illumos/dist/uts/common/fs/zfs vendor-sys/illumos/dist/uts/common/fs/zfs/sys vendor/illumos/dist/lib/libzfs/common X-SVN-Group: vendor MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-vendor@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: SVN commit messages for the vendor work area tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Aug 2015 14:10:06 -0000 Author: avg Date: Tue Aug 18 14:10:04 2015 New Revision: 286889 URL: https://svnweb.freebsd.org/changeset/base/286889 Log: 5692 expose the number of hole blocks in a file illumos/illumos-gate@2bcf0248e992f292c7b814458bcdce2f004925d6 https://www.illumos.org/issues/5692 we would like to expose the number of hole (sparse) blocks in a file. this can be useful to for example if you want to fill in the holes with some data; knowing the number of holes in advances allows you to report progress on hole filling. We could use SEEK_HOLE to do that but it would be O(n) where n is the number of holes present in the file. Author: Max Grossman Reviewed by: Adam Leventhal Reviewed by: Matthew Ahrens Reviewed by: Boris Protopopov Approved by: Richard Lowe Modified: vendor/illumos/dist/lib/libzfs/common/libzfs.h vendor/illumos/dist/lib/libzfs/common/libzfs_util.c Changes in other areas also in this revision: Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/dmu.c vendor-sys/illumos/dist/uts/common/fs/zfs/sys/dmu.h vendor-sys/illumos/dist/uts/common/fs/zfs/zfs_vnops.c Modified: vendor/illumos/dist/lib/libzfs/common/libzfs.h ============================================================================== --- vendor/illumos/dist/lib/libzfs/common/libzfs.h Tue Aug 18 13:16:23 2015 (r286888) +++ vendor/illumos/dist/lib/libzfs/common/libzfs.h Tue Aug 18 14:10:04 2015 (r286889) @@ -21,7 +21,7 @@ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2013 by Delphix. All rights reserved. + * Copyright (c) 2014 by Delphix. All rights reserved. * Copyright (c) 2012, Joyent, Inc. All rights reserved. * Copyright (c) 2013 Steven Hartland. All rights reserved. * Copyright 2013 Nexenta Systems, Inc. All rights reserved. @@ -764,6 +764,8 @@ extern boolean_t libzfs_fru_compare(libz extern boolean_t libzfs_fru_notself(libzfs_handle_t *, const char *); extern int zpool_fru_set(zpool_handle_t *, uint64_t, const char *); +extern int zfs_get_hole_count(const char *, uint64_t *, uint64_t *); + #ifdef __cplusplus } #endif Modified: vendor/illumos/dist/lib/libzfs/common/libzfs_util.c ============================================================================== --- vendor/illumos/dist/lib/libzfs/common/libzfs_util.c Tue Aug 18 13:16:23 2015 (r286888) +++ vendor/illumos/dist/lib/libzfs/common/libzfs_util.c Tue Aug 18 14:10:04 2015 (r286889) @@ -22,7 +22,7 @@ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2013, Joyent, Inc. All rights reserved. - * Copyright (c) 2012 by Delphix. All rights reserved. + * Copyright (c) 2014 by Delphix. All rights reserved. */ /* @@ -39,6 +39,7 @@ #include #include #include +#include #include #include #include @@ -1499,3 +1500,49 @@ zprop_iter(zprop_func func, void *cb, bo { return (zprop_iter_common(func, cb, show_all, ordered, type)); } + +/* + * zfs_get_hole_count retrieves the number of holes (blocks which are + * zero-filled) in the specified file using the _FIO_COUNT_FILLED ioctl. It + * also optionally fetches the block size when bs is non-NULL. With hole count + * and block size the full space consumed by the holes of a file can be + * calculated. + * + * On success, zero is returned, the count argument is set to the + * number of holes, and the bs argument is set to the block size (if it is + * not NULL). On error, a non-zero errno is returned and the values in count + * and bs are undefined. + */ +int +zfs_get_hole_count(const char *path, uint64_t *count, uint64_t *bs) { + int fd, err; + struct stat64 ss; + uint64_t fill; + + fd = open(path, O_RDONLY | O_LARGEFILE); + if (fd == -1) + return (errno); + + if (ioctl(fd, _FIO_COUNT_FILLED, &fill) == -1) { + err = errno; + (void) close(fd); + return (err); + } + + if (fstat64(fd, &ss) == -1) { + err = errno; + (void) close(fd); + return (err); + } + + *count = (ss.st_size + ss.st_blksize - 1) / ss.st_blksize - fill; + VERIFY3S(*count, >=, 0); + if (bs != NULL) { + *bs = ss.st_blksize; + } + + if (close(fd) == -1) { + return (errno); + } + return (0); +} From owner-svn-src-vendor@freebsd.org Tue Aug 18 14:10:05 2015 Return-Path: Delivered-To: svn-src-vendor@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 871E69BC56D; Tue, 18 Aug 2015 14:10:05 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 764022B1; Tue, 18 Aug 2015 14:10:05 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.70]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id t7IEA5Dn052249; Tue, 18 Aug 2015 14:10:05 GMT (envelope-from avg@FreeBSD.org) Received: (from avg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id t7IEA4pW052246; Tue, 18 Aug 2015 14:10:04 GMT (envelope-from avg@FreeBSD.org) Message-Id: <201508181410.t7IEA4pW052246@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: avg set sender to avg@FreeBSD.org using -f From: Andriy Gapon Date: Tue, 18 Aug 2015 14:10:04 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r286889 - vendor-sys/illumos/dist/uts/common/fs/zfs vendor-sys/illumos/dist/uts/common/fs/zfs/sys vendor/illumos/dist/lib/libzfs/common X-SVN-Group: vendor-sys MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-vendor@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: SVN commit messages for the vendor work area tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Aug 2015 14:10:05 -0000 Author: avg Date: Tue Aug 18 14:10:04 2015 New Revision: 286889 URL: https://svnweb.freebsd.org/changeset/base/286889 Log: 5692 expose the number of hole blocks in a file illumos/illumos-gate@2bcf0248e992f292c7b814458bcdce2f004925d6 https://www.illumos.org/issues/5692 we would like to expose the number of hole (sparse) blocks in a file. this can be useful to for example if you want to fill in the holes with some data; knowing the number of holes in advances allows you to report progress on hole filling. We could use SEEK_HOLE to do that but it would be O(n) where n is the number of holes present in the file. Author: Max Grossman Reviewed by: Adam Leventhal Reviewed by: Matthew Ahrens Reviewed by: Boris Protopopov Approved by: Richard Lowe Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/dmu.c vendor-sys/illumos/dist/uts/common/fs/zfs/sys/dmu.h vendor-sys/illumos/dist/uts/common/fs/zfs/zfs_vnops.c Changes in other areas also in this revision: Modified: vendor/illumos/dist/lib/libzfs/common/libzfs.h vendor/illumos/dist/lib/libzfs/common/libzfs_util.c Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/dmu.c ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/dmu.c Tue Aug 18 13:16:23 2015 (r286888) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/dmu.c Tue Aug 18 14:10:04 2015 (r286889) @@ -1830,25 +1830,20 @@ int dmu_offset_next(objset_t *os, uint64_t object, boolean_t hole, uint64_t *off) { dnode_t *dn; - int i, err; + int err; - err = dnode_hold(os, object, FTAG, &dn); - if (err) - return (err); /* * Sync any current changes before * we go trundling through the block pointers. */ - for (i = 0; i < TXG_SIZE; i++) { - if (list_link_active(&dn->dn_dirty_link[i])) - break; + err = dmu_object_wait_synced(os, object); + if (err) { + return (err); } - if (i != TXG_SIZE) { - dnode_rele(dn, FTAG); - txg_wait_synced(dmu_objset_pool(os), 0); - err = dnode_hold(os, object, FTAG, &dn); - if (err) - return (err); + + err = dnode_hold(os, object, FTAG, &dn); + if (err) { + return (err); } err = dnode_next_offset(dn, (hole ? DNODE_FIND_HOLE : 0), off, 1, 1, 0); @@ -1857,6 +1852,36 @@ dmu_offset_next(objset_t *os, uint64_t o return (err); } +/* + * Given the ZFS object, if it contains any dirty nodes + * this function flushes all dirty blocks to disk. This + * ensures the DMU object info is updated. A more efficient + * future version might just find the TXG with the maximum + * ID and wait for that to be synced. + */ +int +dmu_object_wait_synced(objset_t *os, uint64_t object) { + dnode_t *dn; + int error, i; + + error = dnode_hold(os, object, FTAG, &dn); + if (error) { + return (error); + } + + for (i = 0; i < TXG_SIZE; i++) { + if (list_link_active(&dn->dn_dirty_link[i])) { + break; + } + } + dnode_rele(dn, FTAG); + if (i != TXG_SIZE) { + txg_wait_synced(dmu_objset_pool(os), 0); + } + + return (0); +} + void dmu_object_info_from_dnode(dnode_t *dn, dmu_object_info_t *doi) { Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/sys/dmu.h ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/sys/dmu.h Tue Aug 18 13:16:23 2015 (r286888) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/sys/dmu.h Tue Aug 18 14:10:04 2015 (r286889) @@ -906,6 +906,15 @@ int dmu_offset_next(objset_t *os, uint64 uint64_t *off); /* + * Check if a DMU object has any dirty blocks. If so, sync out + * all pending transaction groups. Otherwise, this function + * does not alter DMU state. This could be improved to only sync + * out the necessary transaction groups for this particular + * object. + */ +int dmu_object_wait_synced(objset_t *os, uint64_t object); + +/* * Initial setup and final teardown. */ extern void dmu_init(void); Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/zfs_vnops.c ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/zfs_vnops.c Tue Aug 18 13:16:23 2015 (r286888) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/zfs_vnops.c Tue Aug 18 14:10:04 2015 (r286889) @@ -298,24 +298,31 @@ zfs_ioctl(vnode_t *vp, int com, intptr_t int *rvalp, caller_context_t *ct) { offset_t off; + offset_t ndata; + dmu_object_info_t doi; int error; zfsvfs_t *zfsvfs; znode_t *zp; switch (com) { case _FIOFFS: + { return (zfs_sync(vp->v_vfsp, 0, cred)); /* * The following two ioctls are used by bfu. Faking out, * necessary to avoid bfu errors. */ + } case _FIOGDIO: case _FIOSDIO: + { return (0); + } case _FIO_SEEK_DATA: case _FIO_SEEK_HOLE: + { if (ddi_copyin((void *)data, &off, sizeof (off), flag)) return (SET_ERROR(EFAULT)); @@ -333,6 +340,46 @@ zfs_ioctl(vnode_t *vp, int com, intptr_t return (SET_ERROR(EFAULT)); return (0); } + case _FIO_COUNT_FILLED: + { + /* + * _FIO_COUNT_FILLED adds a new ioctl command which + * exposes the number of filled blocks in a + * ZFS object. + */ + zp = VTOZ(vp); + zfsvfs = zp->z_zfsvfs; + ZFS_ENTER(zfsvfs); + ZFS_VERIFY_ZP(zp); + + /* + * Wait for all dirty blocks for this object + * to get synced out to disk, and the DMU info + * updated. + */ + error = dmu_object_wait_synced(zfsvfs->z_os, zp->z_id); + if (error) { + ZFS_EXIT(zfsvfs); + return (error); + } + + /* + * Retrieve fill count from DMU object. + */ + error = dmu_object_info(zfsvfs->z_os, zp->z_id, &doi); + if (error) { + ZFS_EXIT(zfsvfs); + return (error); + } + + ndata = doi.doi_fill_count; + + ZFS_EXIT(zfsvfs); + if (ddi_copyout(&ndata, (void *)data, sizeof (ndata), flag)) + return (SET_ERROR(EFAULT)); + return (0); + } + } return (SET_ERROR(ENOTTY)); } From owner-svn-src-vendor@freebsd.org Sat Aug 22 07:33:58 2015 Return-Path: Delivered-To: svn-src-vendor@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3F4AC9BEA13; Sat, 22 Aug 2015 07:33:58 +0000 (UTC) (envelope-from delphij@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 3067D1C57; Sat, 22 Aug 2015 07:33:58 +0000 (UTC) (envelope-from delphij@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.70]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id t7M7Xwli053994; Sat, 22 Aug 2015 07:33:58 GMT (envelope-from delphij@FreeBSD.org) Received: (from delphij@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id t7M7XwFS053993; Sat, 22 Aug 2015 07:33:58 GMT (envelope-from delphij@FreeBSD.org) Message-Id: <201508220733.t7M7XwFS053993@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: delphij set sender to delphij@FreeBSD.org using -f From: Xin LI Date: Sat, 22 Aug 2015 07:33:58 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r287017 - vendor/tzdata/dist X-SVN-Group: vendor MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-vendor@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: SVN commit messages for the vendor work area tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 22 Aug 2015 07:33:58 -0000 Author: delphij Date: Sat Aug 22 07:33:57 2015 New Revision: 287017 URL: https://svnweb.freebsd.org/changeset/base/287017 Log: Restore leapseconds@255901. Added: vendor/tzdata/dist/leapseconds Added: vendor/tzdata/dist/leapseconds ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ vendor/tzdata/dist/leapseconds Sat Aug 22 07:33:57 2015 (r287017) @@ -0,0 +1,100 @@ +# 
+# This file is in the public domain, so clarified as of
+# 2009-05-17 by Arthur David Olson.
+
+# Allowance for leapseconds added to each timezone file.
+
+# The International Earth Rotation Service periodically uses leap seconds
+# to keep UTC to within 0.9 s of UT1
+# (which measures the true angular orientation of the earth in space); see
+# Terry J Quinn, The BIPM and the accurate measure of time,
+# Proc IEEE 79, 7 (July 1991), 894-905.
+# There were no leap seconds before 1972, because the official mechanism
+# accounting for the discrepancy between atomic time and the earth's rotation
+# did not exist until the early 1970s.
+
+# The correction (+ or -) is made at the given time, so lines
+# will typically look like:
+#	Leap	YEAR	MON	DAY	23:59:60	+	R/S
+# or
+#	Leap	YEAR	MON	DAY	23:59:59	-	R/S
+
+# If the leapsecond is Rolling (R) the given time is local time
+# If the leapsecond is Stationary (S) the given time is UTC
+
+# Leap	YEAR	MONTH	DAY	HH:MM:SS	CORR	R/S
+Leap	1972	Jun	30	23:59:60	+	S
+Leap	1972	Dec	31	23:59:60	+	S
+Leap	1973	Dec	31	23:59:60	+	S
+Leap	1974	Dec	31	23:59:60	+	S
+Leap	1975	Dec	31	23:59:60	+	S
+Leap	1976	Dec	31	23:59:60	+	S
+Leap	1977	Dec	31	23:59:60	+	S
+Leap	1978	Dec	31	23:59:60	+	S
+Leap	1979	Dec	31	23:59:60	+	S
+Leap	1981	Jun	30	23:59:60	+	S
+Leap	1982	Jun	30	23:59:60	+	S
+Leap	1983	Jun	30	23:59:60	+	S
+Leap	1985	Jun	30	23:59:60	+	S
+Leap	1987	Dec	31	23:59:60	+	S
+Leap	1989	Dec	31	23:59:60	+	S
+Leap	1990	Dec	31	23:59:60	+	S
+Leap	1992	Jun	30	23:59:60	+	S
+Leap	1993	Jun	30	23:59:60	+	S
+Leap	1994	Jun	30	23:59:60	+	S
+Leap	1995	Dec	31	23:59:60	+	S
+Leap	1997	Jun	30	23:59:60	+	S
+Leap	1998	Dec	31	23:59:60	+	S
+Leap	2005	Dec	31	23:59:60	+	S
+Leap	2008	Dec	31	23:59:60	+	S
+Leap	2012	Jun	30	23:59:60	+	S
+
+# INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)
+#
+# SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE
+#
+#
+# SERVICE DE LA ROTATION TERRESTRE
+# OBSERVATOIRE DE PARIS
+# 61, Av. de l'Observatoire 75014 PARIS (France)
+# Tel.      : 33 (0) 1 40 51 22 26
+# FAX       : 33 (0) 1 40 51 22 91
+# e-mail    : (E-Mail Removed)
+# http://hpiers.obspm.fr/eop-pc
+#
+# Paris, 5 January 2012
+#
+#
+# Bulletin C 43
+#
+# To authorities responsible
+# for the measurement and
+# distribution of time
+#
+#
+# UTC TIME STEP
+# on the 1st of July 2012
+#
+#
+# A positive leap second will be introduced at the end of June 2012.
+# The sequence of dates of the UTC second markers will be:
+#
+#                          2012 June 30,     23h 59m 59s
+#                          2012 June 30,     23h 59m 60s
+#                          2012 July  1,      0h  0m  0s
+#
+# The difference between UTC and the International Atomic Time TAI is:
+#
+# from 2009 January 1, 0h UTC, to 2012 July 1  0h UTC  : UTC-TAI = - 34s
+# from 2012 July 1,    0h UTC, until further notice    : UTC-TAI = - 35s
+#
+# Leap seconds can be introduced in UTC at the end of the months of December
+# or June, depending on the evolution of UT1-TAI. Bulletin C is mailed every
+# six months, either to announce a time step in UTC or to confirm that there
+# will be no time step at the next possible date.
+#
+#
+# Daniel GAMBIS
+# Head
+# Earth Orientation Center of IERS
+# Observatoire de Paris, France

From owner-svn-src-vendor@freebsd.org  Sat Aug 22 07:38:33 2015
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Date: Sat, 22 Aug 2015 07:38:33 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r287019 - vendor/tzdata/dist
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Author: delphij
Date: Sat Aug 22 07:38:32 2015
New Revision: 287019
URL: https://svnweb.freebsd.org/changeset/base/287019

Log:
  Vendor import leapseconds from tzdata2015f.

Modified:
  vendor/tzdata/dist/leapseconds

Modified: vendor/tzdata/dist/leapseconds
==============================================================================
--- vendor/tzdata/dist/leapseconds	Sat Aug 22 07:37:27 2015	(r287018)
+++ vendor/tzdata/dist/leapseconds	Sat Aug 22 07:38:32 2015	(r287019)
@@ -1,14 +1,20 @@
-# 
-# This file is in the public domain, so clarified as of
-# 2009-05-17 by Arthur David Olson.
+# Allowance for leap seconds added to each time zone file.
 
-# Allowance for leapseconds added to each timezone file.
+# This file is in the public domain.
 
-# The International Earth Rotation Service periodically uses leap seconds
-# to keep UTC to within 0.9 s of UT1
+# This file is generated automatically from the data in the public-domain
+# leap-seconds.list file available from most NIST time servers.
+# If the URL  does not work,
+# you should be able to pick up leap-seconds.list from a secondary NIST server.
+# For more about leap-seconds.list, please see
+# The NTP Timescale and Leap Seconds
+# http://www.eecis.udel.edu/~mills/leap.html
+
+# The International Earth Rotation and Reference Systems Service
+# periodically uses leap seconds to keep UTC to within 0.9 s of UT1
 # (which measures the true angular orientation of the earth in space); see
 # Terry J Quinn, The BIPM and the accurate measure of time,
-# Proc IEEE 79, 7 (July 1991), 894-905.
+# Proc IEEE 79, 7 (July 1991), 894-905 .
 # There were no leap seconds before 1972, because the official mechanism
 # accounting for the discrepancy between atomic time and the earth's rotation
 # did not exist until the early 1970s.
@@ -19,8 +25,8 @@
 # or
 #	Leap	YEAR	MON	DAY	23:59:59	-	R/S
 
-# If the leapsecond is Rolling (R) the given time is local time
-# If the leapsecond is Stationary (S) the given time is UTC
+# If the leapsecond is Rolling (R) the given time is local time.
+# If the leapsecond is Stationary (S) the given time is UTC.
 
 # Leap	YEAR	MONTH	DAY	HH:MM:SS	CORR	R/S
 Leap	1972	Jun	30	23:59:60	+	S
@@ -48,53 +54,7 @@ Leap	1998	Dec	31	23:59:60	+	S
 Leap	2005	Dec	31	23:59:60	+	S
 Leap	2008	Dec	31	23:59:60	+	S
 Leap	2012	Jun	30	23:59:60	+	S
+Leap	2015	Jun	30	23:59:60	+	S
 
-# INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)
-#
-# SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE
-#
-#
-# SERVICE DE LA ROTATION TERRESTRE
-# OBSERVATOIRE DE PARIS
-# 61, Av. de l'Observatoire 75014 PARIS (France)
-# Tel.      : 33 (0) 1 40 51 22 26
-# FAX       : 33 (0) 1 40 51 22 91
-# e-mail    : (E-Mail Removed)
-# http://hpiers.obspm.fr/eop-pc
-#
-# Paris, 5 January 2012
-#
-#
-# Bulletin C 43
-#
-# To authorities responsible
-# for the measurement and
-# distribution of time
-#
-#
-# UTC TIME STEP
-# on the 1st of July 2012
-#
-#
-# A positive leap second will be introduced at the end of June 2012.
-# The sequence of dates of the UTC second markers will be:
-#
-#                          2012 June 30,     23h 59m 59s
-#                          2012 June 30,     23h 59m 60s
-#                          2012 July  1,      0h  0m  0s
-#
-# The difference between UTC and the International Atomic Time TAI is:
-#
-# from 2009 January 1, 0h UTC, to 2012 July 1  0h UTC  : UTC-TAI = - 34s
-# from 2012 July 1,    0h UTC, until further notice    : UTC-TAI = - 35s
-#
-# Leap seconds can be introduced in UTC at the end of the months of December
-# or June, depending on the evolution of UT1-TAI. Bulletin C is mailed every
-# six months, either to announce a time step in UTC or to confirm that there
-# will be no time step at the next possible date.
-#
-#
-# Daniel GAMBIS
-# Head
-# Earth Orientation Center of IERS
-# Observatoire de Paris, France
+#	Updated through IERS Bulletin C50
+#	File expires on:  28 June 2016