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13 <article xmlns="http://docbook.org/ns/docbook"
14 xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
17 <title>&os; &release.current; Release Notes</title>
20 <orgname>The &os; Project</orgname>
23 <pubdate>$FreeBSD$</pubdate>
25 <!-- Last rev: 284813 -->
29 <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
33 <legalnotice xml:id="trademarks" role="trademarks">
43 <para>The release notes for &os; &release.current; contain
44 a summary of the changes made to the &os; base system on the
45 &release.branch; development line. This document lists
46 applicable security advisories that were issued since the last
47 release, as well as significant changes to the &os; kernel and
48 userland. Some brief remarks on upgrading are also
53 <sect1 xml:id="intro">
54 <title>Introduction</title>
56 <para>This document contains the release notes for &os;
57 &release.current;. It describes recently added, changed, or
58 deleted features of &os;. It also provides some notes on
59 upgrading from previous versions of &os;.</para>
61 <para releasetype="current">The &release.type; distribution to
62 which these release notes apply represents the latest point
63 along the &release.branch; development branch since
64 &release.branch; was created. Information regarding pre-built,
65 binary &release.type; distributions along this branch can be
67 xlink:href="&release.url;">&release.url;</uri>.</para>
69 <para releasetype="snapshot">The &release.type; distribution to
70 which these release notes apply represents a point along the
71 &release.branch; development branch between &release.prev; and
72 the future &release.next;. Information regarding pre-built,
73 binary &release.type; distributions along this branch can be
75 xlink:href="&release.url;">&release.url;</uri>.</para>
77 <para releasetype="release">This distribution of &os;
78 &release.current; is a &release.type; distribution. It can be
79 found at <uri xlink:href="&release.url;">&release.url;</uri> or
80 any of its mirrors. More information on obtaining this (or
81 other) &release.type; distributions of &os; can be found in the
83 xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
84 &os;</quote> appendix</link> to the <link
85 xlink:href="&url.books.handbook;/">&os;
86 Handbook</link>.</para>
88 <para>All users are encouraged to consult the release errata
89 before installing &os;. The errata document is updated with
90 <quote>late-breaking</quote> information discovered late in the
91 release cycle or after the release. Typically, it contains
92 information on known bugs, security advisories, and corrections
93 to documentation. An up-to-date copy of the errata for &os;
94 &release.current; can be found on the &os; Web site.</para>
96 <para>This document describes the most user-visible new or changed
97 features in &os; since &release.prev;.</para>
99 <para>Typical release note items document recent security
100 advisories issued after &release.prev;, new drivers or hardware
101 support, new commands or options, major bug fixes, or
102 contributed software upgrades. They may also list changes to
103 major ports/packages or release engineering practices. Clearly
104 the release notes cannot list every single change made to &os;
105 between releases; this document focuses primarily on security
106 advisories, user-visible changes, and major architectural
110 <sect1 xml:id="upgrade">
111 <title>Upgrading from Previous Releases of &os;</title>
113 <para arch="amd64,i386">Binary upgrades between RELEASE versions
114 (and snapshots of the various security branches) are supported
115 using the &man.freebsd-update.8; utility. The binary upgrade
116 procedure will update unmodified userland utilities, as well as
117 unmodified <filename>GENERIC</filename> kernel distributed as
118 a part of an official &os; release. The &man.freebsd-update.8;
119 utility requires that the host being upgraded have Internet
122 <para>Source-based upgrades (those based on recompiling the &os;
123 base system from source code) from previous versions are
124 supported, according to the instructions in
125 <filename>/usr/src/UPDATING</filename>.</para>
128 <para>Upgrading &os; should only be attempted after
129 backing up <emphasis>all</emphasis> data and configuration
134 <sect1 xml:id="security-errata">
135 <title>Security and Errata</title>
137 <para>This section lists the various Security Advisories and
138 Errata Notices since &release.prev;.</para>
140 <sect2 xml:id="security">
141 <title>Security Advisories</title>
146 <sect2 xml:id="errata">
147 <title>Errata Notices</title>
153 <sect1 xml:id="userland">
154 <title>Userland</title>
156 <para>This section covers changes and additions to userland
157 applications, contributed software, and system utilities.</para>
159 <sect2 xml:id="userland-config">
160 <title>Userland Configuration Changes</title>
162 <para revision="276991">The &man.termcap.5; file is installed
163 as-is from sources, instead of reordering, creating
164 <filename>/etc/termcap.db</filename> by default, providing
165 a performance improvements to applications that use the
166 &man.termcap.5; database, such as &man.vi.1; and
167 &man.ncurses.3;.</para>
170 <sect2 xml:id="userland-programs">
171 <title>Userland Application Changes</title>
173 <para revision="275040">A new utility, &man.dpv.1;, has been
174 added to the base system, providing a &man.dialog.1;-style
175 progress view from one or more input streams. A corresponding
176 library, &man.dpv.3;, has also been added.</para>
178 <para revision="275945">The &man.elfdump.1; utility has been
179 updated to support capability mode provided by
180 &man.capsicum.4;.</para>
182 <para revision="277434" contrib="sponsor" sponsor="&ff;">The
183 &man.fstyp.8; utility has been added, which is used to
184 determine the filesystem on a specified device.</para>
186 <para revision="281044">A regression in the &man.libarchive.3;
187 library that would prevent a directory from being included in
188 the archive when <literal>--one-file-system</literal> is used
189 has been fixed.</para>
191 <para revision="281161" contrib="sponsor"
192 sponsor="&limelight;">A new flag, <literal>-R</literal>, has
193 been added to the &man.netstat.8; utility, which is used to
194 dump <acronym>RSS</acronym>/flow information.</para>
196 <para revision="281936" contrib="sponsor" sponsor="&ff;">The
197 &man.ar.1; utility has been updated to set
198 <literal>ARCHIVE_EXTRACT_SECURE_SYMLINKS</literal> and
199 <literal>ARCHIVE_EXTRACT_SECURE_NODOTDOT</literal> to disallow
200 directory traversal when extracting an archive, similar to
203 <para revision="282278">A race condition in &man.wc.1; that
204 would cause final results to be sent to &man.stderr.4; when
205 receiving the <literal>SIGINFO</literal> signal has been
208 <para revision="282870" contrib="sponsor"
209 sponsor="&scaleengine;">The &man.freebsd-update.8; utility has
210 been updated to prevent fetching updated binary patches when
211 a previous upgrade has not been thoroughly completed.</para>
213 <para revision="282974" contrib="sponsor" sponsor="&ff;">The
214 &man.uefisign.8; utility has been added.</para>
216 <para revision="283875" contrib="sponsor"
217 sponsor="&multiplay;">The &man.chflags.1;, &man.chgrp.1;,
218 &man.chmod.1;, and &man.chown.8; utilities now affect symbolic
219 links when the <literal>-R</literal> flag is specified, as
220 documented in &man.symlink.7;.</para>
222 <para revision="285092">The &man.pw.8; utility has been updated
223 with a new flag, <literal>-R</literal>, that sets the root
224 directory within which the utility will operate.</para>
226 <para revision="283258">The &man.date.1; utility has been
227 updated to print the modification time of the file passed as
228 an argument to the <literal>-r</literal> flag, improving
229 compatibility with the <acronym>GNU</acronym> &man.date.1;
230 utility behavior.</para>
233 <sect2 xml:id="userland-contrib">
234 <title>Contributed Software</title>
236 <para revision="282746" contrib="sponsor" sponsor="&ff;">The
237 &man.resolvconf.8; utility has been updated to version
240 <para revision="283270">The &man.nc.1; utility has been updated
241 to the OpenBSD 5.7 version.</para>
243 <para revision="284398">Timezone data files have been updated to
244 version 2015e.</para>
246 <para revision="284460">The &man.acpi.4; subsystem has been
247 updated to version 20150515.</para>
249 <para revision="284778">The &man.file.1; utility has been
250 updated to version 5.23.</para>
252 <para revision="285206">The &man.unbound.8; utility has been
253 updated to version 1.5.3.</para>
255 <para revision="285305">The <application>sendmail</application>
256 utility has been updated to version 8.15.2.</para>
258 <para revision="285330"><application>OpenSSL</application> has
259 been updated to version 1.0.1p.</para>
262 <sect2 xml:id="userland-installer">
263 <title>Installation and Configuration Tools</title>
268 <sect2 xml:id="userland-rc">
269 <title><filename class="directory">/etc/rc.d</filename>
272 <para revision="284009">A new &man.rc.8; script,
273 <filename>growfs</filename>, has been added, which will resize
274 the root filesystem on boot if <filename>/firstboot</filename>
278 <sect2 xml:id="userland-periodic">
279 <title><filename class="directory">/etc/periodic</filename>
285 <sect2 xml:id="userland-libraries">
286 <title>Runtime Libraries and API</title>
288 <para revision="275040">A new file configuration library,
289 &man.figpar.3;, has been added to the base system.</para>
291 <para revision="280392">The &man.setmode.3; function has been
292 updated to consistently set <literal>errno</literal> on
296 <sect2 xml:id="userland-abi">
297 <title>ABI Compatibility</title>
303 <sect1 xml:id="kernel">
304 <title>Kernel</title>
306 <para>This section covers changes to kernel configurations, system
307 tuning, and system control parameters that are not otherwise
310 <sect2 xml:id="kernel-bugfix">
311 <title>Kernel Bug Fixes</title>
316 <sect2 xml:id="kernel-config">
317 <title>Kernel Configuration</title>
319 <para revision="284522" contrib="sponsor"
320 sponsor="&limelight;">A new kernel configuration option,
321 <literal>EM_MULTIQUEUE</literal>, has been added which enables
322 multi-queue support in the &man.em.4; driver.</para>
325 <para>Multi-queue support in the &man.em.4; driver is not
326 officially supported by &intel;.</para>
330 <sect2 xml:id="kernel-sysctl">
331 <title>System Tuning and Controls</title>
333 <para revision="276986">Throttling via <acronym>ACPI</acronym>
334 and <acronym>P4TCC</acronym> via &man.device.hints.5; have
335 been turned off by default.</para>
337 <para revision="278982" contrib="sponsor" sponsor="&ff;">The
338 &man.hwpmc.4; default and maximum callchain depths have been
339 increased. The default has been increased from 16 to 32, and
340 the maximum increased from 32 to 128.</para>
342 <para revision="281255" contrib="sponsor"
343 sponsor="&ix;, &ff;">The &man.devfs.5; device filesystem has
344 been changed to update timestamps for read/write operations
345 using seconds precision. A new &man.sysctl.8;,
346 <literal>vfs.devfs.dotimes</literal> has been added, which
347 when set to a non-zero value, enables default precision
348 timestamps for these operations.</para>
350 <para revision="280632">The <literal>kern.osrelease</literal>
351 and <literal>kern.osreldate</literal> are now configurable
352 &man.jail.8; parameters.</para>
354 <para revision="284665" contrib="sponsor" sponsor="&ff;">A new
355 &man.sysctl.8;, <literal>kern.racct.enable</literal>, has been
356 added, which when set to a non-zero value allows using
357 &man.rctl.8; with the <literal>GENERIC</literal> kernel.
358 A new kernel configuration option,
359 <literal>RACCT_DISABLED</literal> has also been added.</para>
361 <para revision="284665" contrib="sponsor" sponsor="&ff;">The
362 <literal>GENERIC</literal> kernel configuration now includes
363 <literal>RACCT</literal> and <literal>RCTL</literal> by
367 <para>To enable <literal>RACCT</literal> and
368 <literal>RCTL</literal> on a system using the
369 <literal>GENERIC</literal> kernel configuration, add
370 <literal>kern.racct.enable=1</literal> to
371 &man.loader.conf.5;, and reboot the system.</para>
376 <sect1 xml:id="drivers">
377 <title>Devices and Drivers</title>
379 <para>This section covers changes and additions to devices and
380 device drivers since &release.prev;.</para>
382 <sect2 xml:id="drivers-device">
383 <title>Device Drivers</title>
385 <para revision="282199">The <literal>drm</literal> code has
386 been updated to match &linux; version 3.8.13.</para>
389 <sect2 xml:id="drivers-storage">
390 <title>Storage Drivers</title>
392 <para revision="281957">The &man.hptnr.4; driver has been
393 updated to version 1.1.1.</para>
396 <sect2 xml:id="drivers-network">
397 <title>Network Drivers</title>
403 <sect1 xml:id="hardware">
404 <title>Hardware Support</title>
406 <para>This section covers general hardware support for physical
407 machines, hypervisors, and virtualization environments, as well
408 as hardware changes and updates that do not otherwise fit in
409 other sections of this document.</para>
411 <sect2 xml:id="hardware-support">
412 <title>Hardware Support</title>
417 <sect2 xml:id="hardware-virtualization">
418 <title>Virtualization Support</title>
420 <para revision="280370">The &man.bhyve.8; hypervisor has been
421 updated to support <literal>DSM TRIM</literal> commands for
422 virtual <acronym>AHCI</acronym> disks.</para>
424 <para revision="283280" contrib="sponsor" sponsor="&msostc;">The
425 Hyper-V™ drivers have been updated with several
430 <para>The &man.hv.vmbus.4; driver now has multi-channel
435 <para>The &man.hv.storvsc.4; driver now has scatter/gather
436 support, in addition to performance improvements.</para>
440 <para>The &man.hv.kvp.4; driver has received several bug
445 <para revision="285236" contrib="sponsor" sponsor="&msostc;">The
446 &man.hv.netvsc.4; driver has been updated to support checksum
447 offloading and <acronym>TSO</acronym>.</para>
450 <sect2 xml:id="hardware-arm">
451 <title>ARM Support</title>
453 <para revision="278608">The <literal>bcm2835_cpufreq</literal>
454 driver has been added, which supports <acronym>CPU</acronym>
455 frequency and voltage control on the Raspberry Pi
456 <acronym>SOC</acronym>.</para>
460 <sect1 xml:id="storage">
461 <title>Storage</title>
463 <para>This section covers changes and additions to file systems
464 and other storage subsystems, both local and networked.</para>
466 <sect2 xml:id="storage-general">
467 <title>General Storage</title>
469 <para revision="279002" contrib="sponsor" sponsor="&ix;">The
470 &man.ctl.4; <acronym>LUN</acronym> mapping has been rewritten,
471 replacing <acronym>iSCSI</acronym>-specific mapping mechanisms
472 with a new mechanism that works for any port.</para>
474 <para revision="279055" contrib="sponsor" sponsor="&ix;">The
475 &man.ctld.8; utility has been updated to allow controlling
476 non-<acronym>iSCSI</acronym> &man.ctl.4; ports.</para>
478 <para revision="283223" contrib="sponsor" sponsor="&ff;">The
479 &man.autofs.5; subsystem has been updated to include a new
480 &man.auto.master.5; map, <literal>-media</literal>, which
481 allows automatically mounting removable media, such as
482 <acronym>CD</acronym> drives or <acronym>USB</acronym> flash
485 <para revision="283242" contrib="sponsor" sponsor="&ff;">The
486 &man.autofs.5; subsystem has been updated to include a new
487 &man.auto.master.5; map, <literal>-noauto</literal>, which
488 handles &man.fstab.5; entries set to
489 <literal>noauto</literal>.</para>
492 <sect2 xml:id="storage-net">
493 <title>Networked Storage</title>
495 <para revision="274939" contrib="sponsor" sponsor="&ix;">The
496 &man.ctld.8; utility has been updated to include support for
497 registering <acronym>iSCSI</acronym> targets and portals on
498 <acronym>iSNS</acronym> servers. This provides a mechanism
499 which allows <acronym>iSCSI</acronym> initiators to find
500 targets and portals without requiring active
504 <sect2 xml:id="storage-zfs">
507 <para revision="275490">A new tunable,
508 <literal>vfs.zfs.spa_slop_shift</literal>, has been added,
509 which controls how much space is reserved by default.</para>
511 <para revision="277583">The <literal>arc_meta_limit</literal>
512 statistics are now visible through the
513 <literal>kstat</literal> &man.sysctl.8;. As a result of this
514 change, the <literal>vfs.zfs.arc_meta_used</literal>
515 &man.sysctl.8; has been removed, and replaced with the
516 <literal>kstat.zfs.misc.arcstats.arc_meta_used</literal>
517 &man.sysctl.8;.</para>
520 <sect2 xml:id="storage-geom">
521 <title>&man.geom.4;</title>
523 <para revision="275891" contrib="sponsor" sponsor="&ix;">The
524 &man.ctl.4; subsystem has been updated, increasing the ports
525 limit from <literal>128</literal> to <literal>256</literal>,
526 and <acronym>LUN</acronym> limit from <literal>256</literal>
527 to <literal>1024</literal>.</para>
531 <sect1 xml:id="boot">
532 <title>Boot Loader Changes</title>
534 <para>This section covers the boot loader, boot menu, and other
535 boot-related changes.</para>
537 <sect2 xml:id="boot-loader">
538 <title>Boot Loader Changes</title>
540 <para revision="281843">The boot loader has been updated to
541 support entering the <acronym>GELI</acronym> passphrase before
542 loading the kernel. To enable this behavior, add
543 <literal>geom_eli_passphrase_prompt="YES"</literal> to
544 &man.loader.conf.5;.</para>
546 <para revision="283262" contrib="sponsor" sponsor="&ff;">The
547 memory test run at boot time on &os;/&arch.amd64; platforms
548 has been disabled by default.</para>
550 <para revision="283972">A new &man.ttys.5; class,
551 <literal>3wire</literal>, has been added. This is similar to
552 the existing terminal classes, but does not have a defined
555 <para revision="284775" contrib="sponsor" sponsor="&ff;"
556 arch="arm">The &man.ttys.5; file for &os;/&arch.arm; has been
557 updated to enable <filename>ttyu1</filename>,
558 <filename>ttyu2</filename>, and <filename>ttyu3</filename> by
559 default, if the callin port is an active console port.</para>
562 <sect2 xml:id="boot-menu">
563 <title>Boot Menu Changes</title>
569 <sect1 xml:id="network">
570 <title>Networking</title>
572 <para>This section describes changes that affect networking in
575 <sect2 xml:id="network-protocols">
576 <title>Network Procols</title>
582 <sect1 xml:id="ports">
583 <title>Ports Collection and Package Infrastructure</title>
585 <para>This section covers changes to the &os; Ports
586 Collection, package infrastructure, and package maintenance and
587 installation tools.</para>
589 <sect2 xml:id="ports-infrastructure">
590 <title>Infrastructure Changes</title>
595 <sect2 xml:id="ports-packages ">
596 <title>Packaging Changes</title>
603 <title>Documentation</title>
605 <para>This section covers changes to the &os; Documentation
606 Project sources and toolchain.</para>
608 <sect2 xml:id="doc-sources">
609 <title>Documentation Source Changes</title>
614 <sect2 xml:id="doc-toolchain">
615 <title>Documentation Toolchain Changes</title>
621 <sect1 xml:id="releng">
622 <title>Release Engineering and Integration</title>
624 <para>This section convers changes that are specific to the
625 &os; Release Engineering processes.</para>
627 <sect2 xml:id="releng-changes">
628 <title>Integration Changes</title>
630 <para revision="283161" contrib="sponsor" sponsor="&ff;">The
631 Release Engineering build tools have been updated to support
632 building &os;/&arch.arm; images without external utilities for
633 supported boards where a corresponding
634 <literal>u-boot</literal> port exists in the Ports