en_US.ISO8859-1/relnotes/article.xml

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<!ENTITY % release PUBLIC "-//FreeBSD//ENTITIES Release Specification//EN" "release.ent">
 %release;
<!ENTITY % sponsor PUBLIC "-//FreeBSD//ENTITIES Sponsor Specification//EN" "sponsor.ent">
 %sponsor;
<!ENTITY % vendor PUBLIC "-//FreeBSD//ENTITIES Vendor Specification//EN" "vendor.ent">
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<!ENTITY errata SYSTEM "../../share/xml/errata.xml">
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<article xmlns="http://docbook.org/ns/docbook"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xml:id="top"
  version="5.0">

  <info>
    <title>&os; &release.current; Release Notes</title>

    <author>
      <orgname>The &os; Project</orgname>
    </author>

    <pubdate>$FreeBSD: stable/11/release/doc/en_US.ISO8859-1/relnotes/article.xml 363469 2020-07-24 01:25:57Z gshapiro $</pubdate>

    <!-- Last rev: 288943 -->

    <copyright>
      <year>2019</year>
      <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
	Project</holder>
    </copyright>

    <legalnotice xml:id="trademarks" role="trademarks">
      &tm-attrib.freebsd;
      &tm-attrib.ibm;
      &tm-attrib.ieee;
      &tm-attrib.intel;
      &tm-attrib.sparc;
      &tm-attrib.general;
    </legalnotice>

    <abstract>
      <para>The release notes for &os; &release.current; contain
	a summary of the changes made to the &os; base system on the
	&release.branch; development line.  This document lists
	applicable security advisories that were issued since the last
	release, as well as significant changes to the &os; kernel and
	userland.  Some brief remarks on upgrading are also
	presented.</para>
    </abstract>
  </info>

  <sect1 xml:id="intro">
    <title>Introduction</title>

    <para>This document contains the release notes for &os;
      &release.current;.  It describes recently added, changed, or
      deleted features of &os;.  It also provides some notes on
      upgrading from previous versions of &os;.</para>

    <para releasetype="current">The &release.type; distribution to
      which these release notes apply represents the latest point
      along the &release.branch; development branch since
      &release.branch; was created.  Information regarding pre-built,
      binary &release.type; distributions along this branch can be
      found at <uri
	xlink:href="&release.url;">&release.url;</uri>.</para>

    <para releasetype="snapshot">The &release.type; distribution to
      which these release notes apply represents a point along the
      &release.branch; development branch between &release.prev; and
      the future &release.next;.  Information regarding pre-built,
      binary &release.type; distributions along this branch can be
      found at <uri
	xlink:href="&release.url;">&release.url;</uri>.</para>

    <para releasetype="release">This distribution of &os;
      &release.current; is a &release.type; distribution.  It can be
      found at <uri xlink:href="&release.url;">&release.url;</uri> or
      any of its mirrors.  More information on obtaining this (or
      other) &release.type; distributions of &os; can be found in the
      <link
	xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
	  &os;</quote> appendix</link> to the <link
	xlink:href="&url.books.handbook;/">&os;
	Handbook</link>.</para>

    <para>All users are encouraged to consult the release errata
      before installing &os;.  The errata document is updated with
      <quote>late-breaking</quote> information discovered late in the
      release cycle or after the release.  Typically, it contains
      information on known bugs, security advisories, and corrections
      to documentation.  An up-to-date copy of the errata for &os;
      &release.current; can be found on the &os; Web site.</para>

    <para>This document describes the most user-visible new or changed
      features in &os; since &release.prev;.  In general, changes
      described here are unique to the &release.branch; branch unless
      specifically marked as &merged; features.</para>

    <para>Typical release note items document recent security
      advisories issued after &release.prev;, new drivers or hardware
      support, new commands or options, major bug fixes, or
      contributed software upgrades.  They may also list changes to
      major ports/packages or release engineering practices.  Clearly
      the release notes cannot list every single change made to &os;
      between releases; this document focuses primarily on security
      advisories, user-visible changes, and major architectural
      improvements.</para>
  </sect1>

  <sect1 xml:id="upgrade">
    <title>Upgrading from Previous Releases of &os;</title>

    <para arch="amd64,i386">Binary upgrades between RELEASE versions
      (and snapshots of the various security branches) are supported
      using the &man.freebsd-update.8; utility.  The binary upgrade
      procedure will update unmodified userland utilities, as well as
      unmodified GENERIC kernels distributed as a part of an official
      &os; release.  The &man.freebsd-update.8; utility requires that
      the host being upgraded have Internet connectivity.</para>

    <para>Source-based upgrades (those based on recompiling the &os;
      base system from source code) from previous versions are
      supported, according to the instructions in
      <filename>/usr/src/UPDATING</filename>.</para>

    <important>
      <para>Upgrading &os; should only be attempted after backing up
	<emphasis>all</emphasis> data and configuration files.</para>
    </important>
  </sect1>

  <sect1 xml:id="security-errata">
    <title>Security and Errata</title>

    <para>This section lists the various Security Advisories and
      Errata Notices since &release.prev;.</para>

    <sect2 xml:id="security">
      <title>Security Advisories</title>

      &security;
    </sect2>

    <sect2 xml:id="errata">
      <title>Errata Notices</title>

      &errata;
    </sect2>
  </sect1>

  <sect1 xml:id="userland">
    <title>Userland</title>

    <para>This section covers changes and additions to userland
      applications, contributed software, and system utilities.</para>

    <sect2 xml:id="userland-config">
      <title>Userland Configuration Changes</title>

      <para revision="339446">The &man.jail.8; utility has been
	updated to include a new &man.jail.conf.5; parameter,
	<literal>allow.read_msgbuf</literal>, which prevents jailed
	processes and users from accessing the &man.dmesg.8; buffer.
	This parameter is set to <literal>false</literal> by
	default.</para>

      <para revision="342103">The system &man.crontab.5;,
	<filename>/etc/crontab</filename>, has been updated to set
	<varname>PATH</varname> for consistency with the &man.cron.8;
	daemon.</para>

      <para revision="343469">The default &man.devd.conf.5; has been
	updated to prevent duplicated &man.hostapd.8; and
	&man.wpa.supplicant.8; startup via &man.devd.8;.</para>
    </sect2>

    <sect2 xml:id="userland-programs">
      <title>Userland Application Changes</title>

      <para revision="336040">The &man.cpuset.1;, &man.sockstat.1;,
	&man.ipfw.8;, and &man.ugidfw.8; utilities have been updated
	to support &man.jail.8; names.</para>

      <para revision="336328">The &man.newfs.msdos.8; utililty has
	been updated to include a new flag, <literal>-T</literal>,
	which is used to specify the timestamp for build
	reproducibility.</para>

      <para revision="338364">The &man.dd.1; utility has been updated
	to add a new <literal>status</literal>operand,
	<literal>progress</literal>, which reports the current status
	on a single line every second.</para>

      <para revision="338451">The &man.last.1; utility has been
	updated to include &man.libxo.3; support.</para>

      <para revision="338452">The &man.lastlogin.8; utility has been
	updated to include &man.libxo.3; support.</para>

      <para revision="338475">The &man.traceroute.8; utility has been
	updated to include &man.libcasper.3; support.</para>

      <para revision="339160">The &man.diff.1; utility has been
	updated to implement <literal>-B</literal> and
	<literal>--ignore-blank-lines</literal> support.</para>

      <para revision="340963">The &man.makewhatis.1; utility has been
	updated to prevent operating within read-only
	directories.</para>

      <para revision="341790">The &man.jail.8; utility has been
	updated to add a new flag, <literal>-e</literal>, which takes
	a &man.jail.conf.5; parameter as an argument and prints a list
	of non-wildcard jails with the specified parameter.</para>

      <para revision="342706">The &man.ktrdump.8; utility has been
	updated to include the <literal>-l</literal> flag which
	enables &quot;live&quot; mode when specified.</para>

      <para revision="343118">The &man.trim.8; utility has been added,
	which deletes content for blocks on flash-based storage
	devices that use wear-leveling algorithms.</para>

      <para revision="343251">The &man.gzip.1; utility has been
	updated to add <literal>-l</literal> support for &man.xz.1;
	files.</para>

      <para revision="343538" contrib="sponsor"
	sponsor="&netflix;">The &man.newfs.8; and &man.tunefs.8;
	utilities have been updated to allow underscores in label
	names.</para>

      <para revision="344020">The &man.pfctl.8; utility has been
	updated to provide clearer output and reference the
	<literal>net.pf.request_maxcount</literal> &man.sysctl.8;
	if a defined table is too large.</para>

      <para revision="344052">The &man.newfs.8; and &man.tunefs.8;
	utilities have been updated to allow dashes in label
	names.</para>

      <para revision="344490">The &man.fdisk.8; utility has been
	updated to support sectors larger than 2048 bytes.</para>

      <para revision="345561">The &man.sh.1; utility has been updated
	to add the <literal>pipefail</literal> option which simplifies
	checking the exit status of all commands in a pipeline.</para>

      <para revision="345878">The &man.patch.1; utility has been
	updated to exit successfully if the input patch file is
	zero-length.</para>
    </sect2>

    <sect2 xml:id="userland-contrib">
      <title>Contributed Software</title>

      <para revision="334607">The &man.xz.1; utility has been updated
	to version 5.2.4.</para>

      <para revision="337827">The &man.file.1; utility has been
	updated to version 5.34.</para>

      <para revision="338414" contrib="sponsor" sponsor="&ff;">The
	<application>ELF Tool Chain</application> has been updated to
	version r3614.</para>

      <para revision="339100" contrib="sponsor" sponsor="&ff;">The
	<application>lld</application> utility has been updated to add
	<literal>-z interpose</literal>, marking the object file as
	an interposer.</para>

      <para revision="343079">The &man.file.1; utility has been
	updated to fix incorrect date reporting for &man.dump.8;
	files.</para>

      <para revision="344220">The <application>LUA</application>
	&man.loader.8; has been merged.</para>

      <para revision="344884">The &man.ntpd.8; utilities have been
	updated to version 4.2.8p13.</para>

      <para revision="345670">Timezone data files have been updated to
	version 2019a.</para>

      <para revision="346296">The <application>clang</application>,
	<application>llvm</application>,
	<application>lld</application>,
	<application>lldb</application>, and
	<application>compiler-rt</application> utilities as well as
	<application>libc++</application> have been updated to
	upstream version 8.0.0.</para>

      <para revision="346981">The <application>WPA</application>
	utilities have been updated to version 2.8.</para>

      <para revision="348343"><application>OpenSSL</application> has
	been updated to version 1.0.2s.</para>

      <para revision="348607">The &man.libarchive.3; library has been
	updated to version 3.3.3, with additional fixes from
	upstream.</para>

      <para revision="348980"><application>OpenPAM</application> has
	been updated to the latest upstream version.</para>

      <para revision="363466"><application>sendmail</application> has
	been updated to version 8.16.1.</para>
    </sect2>

    <sect2 xml:id="userland-installer">
      <title>Installation and Configuration Tools</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="userland-rc">
      <title><filename class="directory">/etc/rc.d</filename>
	Scripts</title>

      <para revision="340611">Support for auxiliary
	<acronym>RAM</acronym> has been added to
	<filename>/etc/rc.initdiskless</filename>.</para>

      <para revision="340966">The &man.rcorder.8; utility has been
	updated to add support for
	<filename>/etc/rc.resume</filename>.</para>

      <para revision="341792">The <literal>jail_conf</literal>
	definition, which defaults to
	<filename>/etc/jail.conf</filename>, has been moved from
	the &man.jail.8; &man.rc.8; script to
	<filename>/etc/defaults/rc.conf</filename>.</para>

      <para revision="343046">The <varname>rc_service</varname>
	variable has been added to &man.rc.subr.8;, which defaults to
	the path of the service being executed in case the service
	needs to re-invoke itself.</para>
    </sect2>

    <sect2 xml:id="userland-periodic">
      <title><filename class="directory">/etc/periodic</filename>
	Scripts</title>

      <para revision="341794">The &man.periodic.8; weekly
	<filename>340.noid</filename> script has been updated to
	prevent decending into the root directory of jails.</para>
    </sect2>

    <sect2 xml:id="userland-libraries">
      <title>Runtime Libraries and API</title>

      <para revision="335640">The &man.pcap.3; library has been
	updated to version 1.9.0 (pre-release).</para>

      <para revision="336449">The &man.setproctitle.fast.3; function
	has been added, which is optimized for high-frequency process
	title updates.</para>

      <para revision="337418" contrib="sponsor"
	sponsor="&dellemc;">The &man.kqueue.2; system call has been
	updated to allow updating
	<literal>EVFILT_TIMER</literal>.</para>

      <para revision="338405">The &man.pthread.get.name.np.3; function
	has been added, which is used to retrieve the function name
	associated with a thread.</para>

      <para revision="338707">The &man.pthread.3; library has been
	updated to improve <acronym>POSIX</acronym> compliance.</para>
    </sect2>

    <sect2 xml:id="userland-abi">
      <title>ABI Compatibility</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="userland-debug">
      <title>Userland Debugging</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="kernel">
    <title>Kernel</title>

    <para>This section covers changes to kernel configurations, system
      tuning, and system control parameters that are not otherwise
      categorized.</para>

    <sect2 xml:id="kernel-general">
      <title>General Kernel Changes</title>

      <para revision="339857" contrib="sponsor"
	sponsor="&panzura;">The &man.ddb.4; debugging utility has been
	updated to print command-line arguments to a process.</para>

      <para revision="342656">The number of <acronym>MSI</acronym>
	<acronym>IRQ</acronym>s have been converted from a constant to
	a tunable.  The default remains at <literal>512</literal>,
	which can now be changed during boot with the
	<literal>machdep.num_msi_irqs</literal> &man.sysctl.8;.</para>

      <para revision="343084" contrib="sponsor"
	sponsor="&modirum;">The kernel will now log the &man.jail.8;
	<acronym>ID</acronym> when logging a process exit.  The
	&man.jail.8; <acronym>ID</acronym> <literal>0</literal>
	represents processes that are not jailed.</para>

      <para revision="348753">Warnings for features deprecated in
	future releases will now be printed on all &os;
	versions.</para>
    </sect2>

    <sect2 xml:id="kernel-bugfix">
      <title>Kernel Bug Fixes</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="kernel-config">
      <title>Kernel Configuration</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="kernel-modules">
      <title>Kernel Modules</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="kernel-sysctl">
      <title>System Tuning and Controls</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="drivers">
    <title>Devices and Drivers</title>

    <para>This section covers changes and additions to devices and
      device drivers since &release.prev;.</para>

    <sect2 xml:id="drivers-device">
      <title>Device Drivers</title>

      <para revision="340182" contrib="sponsor"
	sponsor="&panzura;">The &man.ichwd.4; driver has been updated
	to include support for <acronym>TCO</acronym> watchdog timers
	in the Lewisburg <acronym>PCH</acronym> (C620) chipset.</para>

      <para revision="345981">The &man.random.4; driver has been
	updated to improve performance during expensive
	reseeding.</para>
    </sect2>

    <sect2 xml:id="drivers-storage">
      <title>Storage Drivers</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="drivers-network">
      <title>Network Drivers</title>

      <para revision="340369">The TP-Link&reg; TL-WN321G&trade;
	network adapter now uses the &man.run.4; driver instead of the
	&man.rum.4; driver.</para>

      <para revision="342206" contrib="sponsor" sponsor="&ix;">The
	&man.lagg.4; driver has been updated to allow changing the
	<acronym>MTU</acronym> without requiring destroying and
	recreating the interface.</para>

      <para revision="345040" contrib="sponsor"
	sponsor="&chelsio;">The &man.ccr.4; driver has been added,
	providing support for Chelsio&reg; T6&trade; cryptography
	accelerators.</para>

      <para revision="346855" contrib="sponsor"
	sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
	to include support for hash filters, <acronym>NAT</acronym>
	offloading, and
	<acronym>SMAC</acronym>/<acronym>DMAC</acronym> swapping
	filters.</para>

      <para revision="346940" contrib="sponsor"
	sponsor="&chelsio;">The &man.cxgbe.4; T4, T5, and T6 firmware
	has been updated to version 1.23.0.0.</para>
    </sect2>
  </sect1>

  <sect1 xml:id="hardware">
    <title>Hardware Support</title>

    <para>This section covers general hardware support for physical
      machines, hypervisors, and virtualization environments, as well
      as hardware changes and updates that do not otherwise fit in
      other sections of this document.</para>

    <sect2 xml:id="hardware-support">
      <title>Hardware Support</title>

      <para revision="342254">The &man.vt.4; keyboard mapping has been
	updated to include <literal>uk.macbook.kbd</literal>
	support.</para>
    </sect2>

    <sect2 xml:id="hardware-virtualization">
      <title>Virtualization Support</title>

      <para revision="341758" contrib="sponsor" sponsor="&ix;">Support
	for <acronym>PS/2</acronym> scan codes for
	<literal>NumLock</literal>, <literal>ScrollLock</literal>, and
	numerical keypad keys has been added to &man.bhyve.8;.</para>
    </sect2>

    <sect2 xml:id="hardware-arm">
      <title>ARM Support</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="storage">
    <title>Storage</title>

    <para>This section covers changes and additions to file systems
      and other storage subsystems, both local and networked.</para>

    <sect2 xml:id="storage-general">
      <title>General Storage</title>

      <para revision="348588">Deprecation warnings have been added for
	weaker algorithms when creating &man.geli.8; providers.</para>
    </sect2>

    <sect2 xml:id="storage-net">
      <title>Networked Storage</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="storage-zfs">
      <title>ZFS</title>

      <para revision="341828" contrib="sponsor" sponsor="&klara;">An
	issue that could result in a system hang during
	<acronym>ZFS</acronym> vnode reclamation has been
	fixed.</para>

      <para revision="346690" contrib="sponsor" sponsor="&gandi;">The
	<acronym>ZFS</acronym> filesystem has been updated to
	implement parallel mounting.</para>
    </sect2>

    <sect2 xml:id="storage-geom">
      <title><literal>geom(4)</literal></title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="boot">
    <title>Boot Loader Changes</title>

    <para>This section covers the boot loader, boot menu, and other
      boot-related changes.</para>

    <sect2 xml:id="boot-loader">
      <title>Boot Loader Changes</title>

      <para revision="344399">The functionality provided by
	<filename>zfsloader</filename> has been added to
	&man.loader.8;.  Once the system boot blocks have been updated
	following <filename>UPDATING</filename>,
	<filename>zfsloader</filename> is no longer needed.  A hard
	link to &man.loader.8; has been added to ease in the
	transition.</para>

      <para revision="344399">The &man.loader.8; has been updated to
	extend &man.geli.8; support to all architectures.</para>

      <para revision="344403">The <acronym>UEFI</acronym> boot
	&man.loader.8; has been updated to better determine the system
	console type and device if not defined in
	&man.loader.conf.5;.</para>
    </sect2>

    <sect2 xml:id="boot-menu">
      <title>Boot Menu Changes</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="network">
    <title>Networking</title>

    <para>This section describes changes that affect networking in
      &os;.</para>

    <sect2 xml:id="network-general">
      <title>General Network Changes</title>

      <para revision="337461">The &man.ipfw.8; firewall has been
	updated to include new rule options,
	<literal>record-state</literal>, <literal>set-limit</literal>,
	and <literal>defer-action</literal>.</para>

      <para revision="346212" contrib="sponsor"
	sponsor="&yandex;">Support for <acronym>NAT64</acronym>
	<acronym>CLAT</acronym> has been added, as defined in
	<acronym>RFC</acronym>6877.</para>
    </sect2>

    <sect2 xml:id="network-protocols">
      <title>Network Protocols</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="ports">
    <title>Ports Collection and Package Infrastructure</title>

    <para>This section covers changes to the &os;&nbsp;Ports
      Collection, package infrastructure, and package maintenance and
      installation tools.</para>

    <sect2 xml:id="ports-infrastructure">
      <title>Infrastructure Changes</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="ports-packages ">
      <title>Packaging Changes</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="doc">
    <title>Documentation</title>

    <para>This section covers changes to the &os;&nbsp;Documentation
      Project sources and toolchain.</para>

    <sect2 xml:id="doc-sources">
      <title>Documentation Source Changes</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="doc-toolchain">
      <title>Documentation Toolchain Changes</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="releng">
    <title>Release Engineering and Integration</title>

    <para>This section convers changes that are specific to the
      &os;&nbsp;Release Engineering processes.</para>

    <sect2 xml:id="releng-changes">
      <title>Integration Changes</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>
</article>