1 Updating Information for FreeBSD current users
3 This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>.
4 See end of file for further details. For commonly done items, please see the
5 COMMON ITEMS: section later in the file. These instructions assume that you
6 basically know what you are doing. If not, then please consult the FreeBSD
9 http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html
11 Items affecting the ports and packages system can be found in
12 /usr/ports/UPDATING. Please read that file before running portupgrade.
14 NOTE: FreeBSD has switched from gcc to clang. If you have trouble bootstrapping
15 from older versions of FreeBSD, try WITHOUT_CLANG to bootstrap to the tip of
16 stable/10, and then rebuild without this option. The bootstrap process from
17 older version of current is a bit fragile.
19 20171129 p25 FreeBSD-SA-17:11.openssl
21 Fix OpenSSL out-of-bounds read vulnerability.
23 20171115 p24 FreeBSD-SA-17:08.ptrace
25 FreeBSD-SA-17:10.kldstat
27 Fix ptrace(2) vulnerability. [SA-17:08.ptrace]
29 Fix POSIX shm namespace vulnerability. [SA-17:09.shm]
31 Fix kldstat(2) vulnerability. [SA-17:10.kldstat]
33 20171102 p23 FreeBSD-EN-17:09.tzdata
35 Update timezone database information. [EN-17:09]
37 20171017 p22 FreeBSD-SA-17:07.wpa
39 Fix WPA2 protocol vulnerability. [SA-17:07]
41 20170810 p21 FreeBSD-SA-17:06.openssh
43 Fix OpenSSH Denial of Service vulnerability. [SA-17:06]
45 20170712 p20 FreeBSD-SA-17:05.heimdal
46 FreeBSD-EN-17:06.hyperv
48 Fix heimdal KDC-REP service name validation vulnerability [SA-17:05]
50 Boot compatibility improvements with Azure VMs. [EN-17:06]
52 20170427 p19 FreeBSD-SA-17:04.ipfilter
54 Fix ipfilter(4) fragment handling panic. [SA-17:04]
56 20170412 p18 FreeBSD-SA-17:03.ntp
59 Fix multiple vulnerabilities of ntp. [SA-17:03]
61 Xen migration enhancements. [EN-17:05]
63 20170223 p17 FreeBSD-SA-17:02.openssl
65 Fix OpenSSL RC4_MD5 cipher vulnerability.
67 20170111 p16 FreeBSD-SA-17:01.openssh
69 Fix multiple vulnerabilities of OpenSSH.
71 20161222 p15 FreeBSD-SA-16:39.ntp
73 Fix multiple vulnerabilities of ntp.
75 20161208 p14 FreeBSD-SA-16:37.libc [revised]
77 Fix regressions introduced by SA-16:37.libc.
79 20161206 p13 FreeBSD-SA-16:36.telnetd
81 FreeBSD-SA-16:38.bhyve
82 FreeBSD-EN-16:19.tzcode
83 FreeBSD-EN-16:20.tzdata
85 Fix possible login(1) argument injection in telnetd(8). [SA-16:36]
86 Fix link_ntoa(3) buffer overflow in libc. [SA-16:37]
87 Fix possible escape from bhyve(8) virtual machine. [SA-16:38]
88 Fix warnings about valid time zone abbreviations. [EN-16:19]
89 Update timezone database information. [EN-16:20]
91 20161102 p12 FreeBSD-SA-16:33.openssh
92 FreeBSD-SA-16:35.openssl
94 Fix OpenSSH remote Denial of Service vulnerability. [SA-16:33]
96 Fix OpenSSL remote DoS vulnerability. [SA-16:35]
98 20161025 p11 FreeBSD-SA-16:15.sysarch [revised]
101 Fix incorrect argument validation in sysarch(2). [SA-16:15]
102 Fix virtual memory subsystem bugs. [EN-16:17]
104 20161010 p10 FreeBSD-SA-16:29.bspatch
105 FreeBSD-SA-16:30.portsnap
106 FreeBSD-SA-16:31.libarchive
108 Fix bspatch heap overflow vulnerability. [SA-16:29]
110 Fix multiple portsnap vulnerabilities. [SA-16:30]
112 Fix multiple libarchive vulnerabilities. [SA-16:31]
114 20160926 p9 FreeBSD-SA-16:26.openssl [revised]
116 Fix OpenSSL regression introduced in SA-16:26.
118 20160923 p8 FreeBSD-SA-16:26.openssl
120 Fix multiple OpenSSL vulnerabilitites.
122 20160811 p7 FreeBSD-EN-16:10.dhclient
123 FreeBSD-EN-16:11.vmbus
124 FreeBSD-EN-16:12.hv_storvsc
125 FreeBSD-EN-16:13.vmbus
126 FreeBSD-EN-16:14.hv_storvsc
127 FreeBSD-EN-16:15.vmbus
128 FreeBSD-EN-16:16.hv_storvsc
130 Fix handling of unknown options from a DHCP server. [EN-16:10]
131 Fix a panic in hv_vmbus(4). [EN-16:11]
132 Fix missing hotplugged disk in hv_storvsc(4). [EN-16:12]
133 Fix the timecounter emulation in hv_vmbus(4). [EN-16:13]
134 Fix callout(9) handling in hv_storvsc(4). [EN-16:14]
135 Fix memory allocation issues in hv_vmbus(4). [EN-16:15]
136 Fix SCSI command handling in hv_storvsc(4). [EN-16:16]
138 20160725 p6 FreeBSD-SA-16:25.bspatch
139 FreeBSD-EN-16:09.freebsd-update
141 Fix bspatch heap overflow vulnerability. [SA-16:25]
143 Fix freebsd-update(8) support of FreeBSD 11.0 release
144 distribution. [EN-16:09]
146 20160604 p5 FreeBSD-SA-16:24.ntp
148 Fix multiple vulnerabilities of ntp.
150 20160531 p4 FreeBSD-SA-16:20.linux
151 FreeBSD-SA-16:21.43bsd
152 FreeBSD-SA-16:22.libarchive
154 Fix kernel stack disclosure in Linux compatibility layer. [SA-16:20]
155 Fix kernel stack disclosure in 4.3BSD compatibility layer. [SA-16:21]
156 Fix directory traversal in cpio(1). [SA-16:22]
159 20160517 p3 FreeBSD-SA-16:18.atkbd
160 FreeBSD-SA-16:19.sendmsg
162 Fix buffer overflow in keyboard driver. [SA-16:18]
164 Fix incorrect argument handling in sendmsg(2). [SA-16:19]
166 20160504 p2 FreeBSD-SA-16:17.openssl
167 FreeBSD-EN-16:06.libc
171 Fix multiple OpenSSL vulnerabilitites. [SA-16:17]
173 Fix performance regression in libc hash(3). [EN-16:06]
175 Fix excessive latency in x86 IPI delivery. [EN-16:07]
177 Fix memory leak in ZFS. [EN-16:08]
179 20160429 p1 FreeBSD-SA-16:16.ntp
181 Fix multiple vulnerabilities of ntp.
187 The NONE and HPN patches has been removed from OpenSSH. They are
188 still available in the security/openssh-portable port.
191 r292223 changed the internal interface between the nfsd.ko and
192 nfscommon.ko modules. As such, they must both be upgraded to-gether.
193 __FreeBSD_version has been bumped because of this.
196 Qlogic 24xx/25xx firmware images were updated from 5.5.0 to 7.3.0.
197 Kernel modules isp_2400_multi and isp_2500_multi were removed and
198 should be replaced with isp_2400 and isp_2500 modules respectively.
201 The menu.rc and loader.rc files will now be replaced during
202 upgrades. Please migrate local changes to menu.rc.local and
203 loader.rc.local instead.
206 NTP has been upgraded to 4.2.8p4.
209 ALLOW_DEPRECATED_ATF_TOOLS/ATFFILE support has been removed from
210 atf.test.mk (included from bsd.test.mk). Please upgrade devel/atf
211 and devel/kyua to version 0.20+ and adjust any calling code to work
212 with Kyuafile and kyua.
215 The polarity of Pulse Per Second (PPS) capture events with the
216 uart(4) driver has been corrected. Prior to this change the PPS
217 "assert" event corresponded to the trailing edge of a positive PPS
218 pulse and the "clear" event was the leading edge of the next pulse.
220 As the width of a PPS pulse in a typical GPS receiver is on the
221 order of 1 millisecond, most users will not notice any significant
222 difference with this change.
224 Anyone who has compensated for the historical polarity reversal by
225 configuring a negative offset equal to the pulse width will need to
226 remove that workaround.
229 From legacy ata(4) driver was removed support for SATA controllers
230 supported by more functional drivers ahci(4), siis(4) and mvs(4).
231 Kernel modules ataahci and ataadaptec were removed completely,
232 replaced by ahci and mvs modules respectively.
238 As ZFS requires more kernel stack pages than is the default on some
239 architectures e.g. i386, it now warns if KSTACK_PAGES is less than
240 ZFS_MIN_KSTACK_PAGES (which is 4 at the time of writing).
242 Please consider using 'options KSTACK_PAGES=X' where X is greater
243 than or equal to ZFS_MIN_KSTACK_PAGES i.e. 4 in such configurations.
246 The default Unbound configuration now enables remote control
247 using a local socket. Users who have already enabled the
248 local_unbound service should regenerate their configuration
249 by running "service local_unbound setup" as root.
252 An additional fix for the issue described in the 20150614 sendmail
253 entry below has been been committed in revision 284786.
256 The fix for the issue described in the 20150614 sendmail entry
257 below has been been committed in revision 284485. The work
258 around described in that entry is no longer needed unless the
259 default setting is overridden by a confDH_PARAMETERS configuration
260 setting of '5' or pointing to a 512 bit DH parameter file.
263 The import of openssl to address the FreeBSD-SA-15:10.openssl
264 security advisory includes a change which rejects handshakes
265 with DH parameters below 768 bits. sendmail releases prior
266 to 8.15.2 (not yet released), defaulted to a 512 bit
267 DH parameter setting for client connections. To work around
268 this interoperability, sendmail can be configured to use a
269 2048 bit DH parameter by:
271 1. Edit /etc/mail/`hostname`.mc
272 2. If a setting for confDH_PARAMETERS does not exist or
273 exists and is set to a string beginning with '5',
275 3. If a setting for confDH_PARAMETERS exists and is set to
276 a file path, create a new file with:
277 openssl dhparam -out /path/to/file 2048
278 4. Rebuild the .cf file:
279 cd /etc/mail/; make; make install
281 cd /etc/mail/; make restart
283 A sendmail patch is coming, at which time this file will be
287 chmod, chflags, chown and chgrp now affect symlinks in -R mode as
288 defined in symlink(7); previously symlinks were silently ignored.
291 The const qualifier has been removed from iconv(3) to comply with
292 POSIX. The ports tree is aware of this from r384038 onwards.
295 At svn r275807, The default linux compat kernel ABI has been adjusted
296 to 2.6.18 in support of the linux-c6 compat ports infrastructure
297 update. If you wish to continue using the linux-f10 compat ports,
298 add compat.linux.osrelease=2.6.16 to your local sysctl.conf. Users are
299 encouraged to update their linux-compat packages to linux-c6 during
300 their next update cycle.
302 See ports/UPDATING 20141209 and 20141215 on migration to CentOS 6 ports.
305 pjdfstest has been integrated into kyua as an opt-in test suite.
306 Please see share/doc/pjdfstest/README for a more details on how to
313 The ofwfb driver, used to provide a graphics console on PowerPC when
314 using vt(4), no longer allows mmap() of all of physical memory. This
315 will prevent Xorg on PowerPC with some ATI graphics cards from
316 initializing properly unless x11-servers/xorg-server is updated to
320 The libatf-c and libatf-c++ major versions were downgraded to 0 and
321 1 respectively to match the upstream numbers. They were out of
322 sync because, when they were originally added to FreeBSD, the
323 upstream versions were not respected. These libraries are private
324 and not yet built by default, so renumbering them should be a
325 non-issue. However, unclean source trees will yield broken test
326 programs once the operator executes "make delete-old-libs" after a
329 Additionally, the atf-sh binary was made private by moving it into
330 /usr/libexec/. Already-built shell test programs will keep the
331 path to the old binary so they will break after "make delete-old"
334 If you are using WITH_TESTS=yes (not the default), wipe the object
335 tree and rebuild from scratch to prevent spurious test failures.
336 This is only needed once: the misnumbered libraries and misplaced
337 binaries have been added to OptionalObsoleteFiles.inc so they will
338 be removed during a clean upgrade.
341 The ixgbe tunables now match their sysctl counterparts, for example:
342 hw.ixgbe.enable_aim => hw.ix.enable_aim
343 Anyone using ixgbe tunables should ensure they update /boot/loader.conf.
346 The NFSv4.1 server committed by r269398 changes the internal
347 function call interfaces used between the NFS and krpc modules.
348 As such, __FreeBSD_version was bumped.
351 The default unbound configuration has been modified to address
352 issues with reverse lookups on networks that use private
353 address ranges. If you use the local_unbound service, run
354 "service local_unbound setup" as root to regenerate your
355 configuration, then "service local_unbound reload" to load the
359 It is no longer necessary to include the dwarf version in your DEBUG
360 options in your kernel config file. The bug that required it to be
361 placed in the config file has bene fixed. DEBUG should now just
362 contain -g. The build system will automatically update things
363 to do the right thing.
366 Several ABI breaking changes were merged to CTL and new iSCSI code.
367 All CTL and iSCSI-related tools, such as ctladm, ctld, iscsid and
368 iscsictl need to be rebuilt to work with a new kernel.
371 The WITHOUT_VT_SUPPORT kernel config knob has been renamed
372 WITHOUT_VT. (The other _SUPPORT knobs have a consistent meaning
373 which differs from the behaviour controlled by this knob.)
376 On i386 and amd64 systems, the onifconsole flag is now set by default
377 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled
378 as a login TTY if it is set in the bootloader as an active kernel
379 console. No changes in behavior should result otherwise. To revert to
380 the previous behavior, set ttyu0 to "off" in /etc/ttys.
383 Clang and llvm have been upgraded to 3.4.1 release.
386 Clang and llvm have been upgraded to 3.4 release.
389 If a Makefile in a tests/ directory was auto-generating a Kyuafile
390 instead of providing an explicit one, this would prevent such
391 Makefile from providing its own Kyuafile in the future during
392 NO_CLEAN builds. This has been fixed in the Makefiles but manual
393 intervention is needed to clean an objdir if you use NO_CLEAN:
394 # find /usr/obj -name Kyuafile | xargs rm -f
397 OpenSSH will now ignore errors caused by kernel lacking of Capsicum
398 capability mode support. Please note that enabling the feature in
399 kernel is still highly recommended.
402 OpenSSH is now built with sandbox support, and will use sandbox as
403 the default privilege separation method. This requires Capsicum
404 capability mode support in kernel.
407 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has
408 been deprecated and will not be part of FreeBSD 11.0 and later
409 releases. If you use this driver, please consider switching to
410 the nfe(4) driver instead.
416 The behavior of gss_pseudo_random() for the krb5 mechanism
417 has changed, for applications requesting a longer random string
418 than produced by the underlying enctype's pseudo-random() function.
419 In particular, the random string produced from a session key of
420 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will
421 be different at the 17th octet and later, after this change.
422 The counter used in the PRF+ construction is now encoded as a
423 big-endian integer in accordance with RFC 4402.
424 __FreeBSD_version is bumped to 1000701.
427 The WITHOUT_ATF build knob has been removed and its functionality
428 has been subsumed into the more generic WITHOUT_TESTS. If you were
429 using the former to disable the build of the ATF libraries, you
430 should change your settings to use the latter.
433 The default version of mtree is nmtree which is obtained from
434 NetBSD. The output is generally the same, but may vary
435 slightly. If you found you need identical output adding
436 "-F freebsd9" to the command line should do the trick. For the
437 time being, the old mtree is available as fmtree.
440 libbsdyml has been renamed to libyaml and moved to /usr/lib/private.
441 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg
442 1.1.4_8 and verify bsdyml not linked in, before running "make
444 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean
446 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml
449 The rc.d/jail script has been updated to support jail(8)
450 configuration file. The "jail_<jname>_*" rc.conf(5) variables
451 for per-jail configuration are automatically converted to
452 /var/run/jail.<jname>.conf before the jail(8) utility is invoked.
453 This is transparently backward compatible. See below about some
454 incompatibilities and rc.conf(5) manual page for more details.
456 These variables are now deprecated in favor of jail(8) configuration
457 file. One can use "rc.d/jail config <jname>" command to generate
458 a jail(8) configuration file in /var/run/jail.<jname>.conf without
459 running the jail(8) utility. The default pathname of the
460 configuration file is /etc/jail.conf and can be specified by
461 using $jail_conf or $jail_<jname>_conf variables.
463 Please note that jail_devfs_ruleset accepts an integer at
464 this moment. Please consider to rewrite the ruleset name
468 BIND has been removed from the base system. If all you need
469 is a local resolver, simply enable and start the local_unbound
470 service instead. Otherwise, several versions of BIND are
471 available in the ports tree. The dns/bind99 port is one example.
473 With this change, nslookup(1) and dig(1) are no longer in the base
474 system. Users should instead use host(1) and drill(1) which are
475 in the base system. Alternatively, nslookup and dig can
476 be obtained by installing the dns/bind-tools port.
479 With the addition of unbound(8), a new unbound user is now
480 required during installworld. "mergemaster -p" can be used to
481 add the user prior to installworld, as documented in the handbook.
484 OpenSSH is now built with DNSSEC support, and will by default
485 silently trust signed SSHFP records. This can be controlled with
486 the VerifyHostKeyDNS client configuration setting. DNSSEC support
487 can be disabled entirely with the WITHOUT_LDNS option in src.conf.
490 The GNU Compiler Collection and C++ standard library (libstdc++)
491 are no longer built by default on platforms where clang is the system
492 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX
496 The PROCDESC kernel option is now part of the GENERIC kernel
497 configuration and is required for the rwhod(8) to work.
498 If you are using custom kernel configuration, you should include
502 The API and ABI related to the Capsicum framework was modified
503 in backward incompatible way. The userland libraries and programs
504 have to be recompiled to work with the new kernel. This includes the
505 following libraries and programs, but the whole buildworld is
506 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl,
507 kdump, procstat, rwho, rwhod, uniq.
510 AES-NI intrinsic support has been added to gcc. The AES-NI module
511 has been updated to use this support. A new gcc is required to build
512 the aesni module on both i386 and amd64.
515 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices.
516 Thus "device padlock_rng" and "device rdrand_rng" should be
517 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG".
520 WITH_ICONV has been split into two feature sets. WITH_ICONV now
521 enables just the iconv* functionality and is now on by default.
522 WITH_LIBICONV_COMPAT enables the libiconv api and link time
523 compatability. Set WITHOUT_ICONV to build the old way.
524 If you have been using WITH_ICONV before, you will very likely
525 need to turn on WITH_LIBICONV_COMPAT.
528 INVARIANTS option now enables DEBUG for code with OpenSolaris and
529 Illumos origin, including ZFS. If you have INVARIANTS in your
530 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG
532 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS)
533 locks if WITNESS option was set. Because that generated a lot of
534 witness(9) reports and all of them were believed to be false
535 positives, this is no longer done. New option OPENSOLARIS_WITNESS
536 can be used to achieve the previous behavior.
539 Timer values in IPv6 data structures now use time_uptime instead
540 of time_second. Although this is not a user-visible functional
541 change, userland utilities which directly use them---ndp(8),
542 rtadvd(8), and rtsold(8) in the base system---need to be updated
546 find -delete can now delete the pathnames given as arguments,
547 instead of only files found below them or if the pathname did
548 not contain any slashes. Formerly, the following error message
551 find: -delete: <path>: relative path potentially not safe
553 Deleting the pathnames given as arguments can be prevented
554 without error messages using -mindepth 1 or by changing
555 directory and passing "." as argument to find. This works in the
556 old as well as the new version of find.
559 Behavior of devfs rules path matching has been changed.
560 Pattern is now always matched against fully qualified devfs
561 path and slash characters must be explicitly matched by
562 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs
563 subdirectories must be reviewed.
566 The default ARM ABI has changed to the ARM EABI. The old ABI is
567 incompatible with the ARM EABI and all programs and modules will
568 need to be rebuilt to work with a new kernel.
570 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set.
572 NOTE: Support for the old ABI will be removed in the future and
573 users are advised to upgrade.
576 pkg_install has been disconnected from the build if you really need it
577 you should add WITH_PKGTOOLS in your src.conf(5).
580 Most of network statistics structures were changed to be able
581 keep 64-bits counters. Thus all tools, that work with networking
582 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.)
585 Fix a bug that allowed a tracing process (e.g. gdb) to write
586 to a memory-mapped file in the traced process's address space
587 even if neither the traced process nor the tracing process had
588 write access to that file.
591 CVS has been removed from the base system. An exact copy
592 of the code is available from the devel/cvs port.
595 Some people report the following error after the switch to bmake:
597 make: illegal option -- J
598 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable]
600 *** [buildworld] Error code 2
602 this likely due to an old instance of make in
603 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE})
604 which src/Makefile will use that blindly, if it exists, so if
605 you see the above error:
607 rm -rf `make -V MAKEPATH`
612 Use bmake by default.
613 Whereas before one could choose to build with bmake via
614 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old
615 make. The goal is to remove these knobs for 10-RELEASE.
617 It is worth noting that bmake (like gmake) treats the command
618 line as the unit of failure, rather than statements within the
619 command line. Thus '(cd some/where && dosomething)' is safer
620 than 'cd some/where; dosomething'. The '()' allows consistent
621 behavior in parallel build.
624 Fix a bug that allows NFS clients to issue READDIR on files.
627 The WITHOUT_IDEA option has been removed because
628 the IDEA patent expired.
631 The sysctl which controls TRIM support under ZFS has been renamed
632 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been
636 The mergemaster command now uses the default MAKEOBJDIRPREFIX
637 rather than creating it's own in the temporary directory in
638 order allow access to bootstrapped versions of tools such as
639 install and mtree. When upgrading from version of FreeBSD where
640 the install command does not support -l, you will need to
641 install a new mergemaster command if mergemaster -p is required.
642 This can be accomplished with the command (cd src/usr.sbin/mergemaster
646 Legacy ATA stack, disabled and replaced by new CAM-based one since
647 FreeBSD 9.0, completely removed from the sources. Kernel modules
648 atadisk and atapi*, user-level tools atacontrol and burncd are
649 removed. Kernel option `options ATA_CAM` is now permanently enabled
653 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2)
654 and socketpair(2). Software, in particular Kerberos, may
655 automatically detect and use these during building. The resulting
656 binaries will not work on older kernels.
659 CTL_DISABLE has also been added to the sparc64 GENERIC (for further
660 information, see the respective 20130304 entry).
663 Recent commits to callout(9) changed the size of struct callout,
664 so the KBI is probably heavily disturbed. Also, some functions
665 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced
666 by macros. Every kernel module using it won't load, so rebuild
669 The ctl device has been re-enabled in GENERIC for i386 and amd64,
670 but does not initialize by default (because of the new CTL_DISABLE
671 option) to save memory. To re-enable it, remove the CTL_DISABLE
672 option from the kernel config file or set kern.cam.ctl.disable=0
673 in /boot/loader.conf.
676 The ctl device has been disabled in GENERIC for i386 and amd64.
677 This was done due to the extra memory being allocated at system
678 initialisation time by the ctl driver which was only used if
679 a CAM target device was created. This makes a FreeBSD system
680 unusable on 128MB or less of RAM.
683 A new compression method (lz4) has been merged to -HEAD. Please
684 refer to zpool-features(7) for more information.
686 Please refer to the "ZFS notes" section of this file for information
687 on upgrading boot ZFS pools.
690 A BSD-licensed patch(1) variant has been added and is installed
691 as bsdpatch, being the GNU version the default patch.
692 To inverse the logic and use the BSD-licensed one as default,
693 while having the GNU version installed as gnupatch, rebuild
694 and install world with the WITH_BSD_PATCH knob set.
697 Due to the use of the new -l option to install(1) during build
698 and install, you must take care not to directly set the INSTALL
699 make variable in your /etc/make.conf, /etc/src.conf, or on the
700 command line. If you wish to use the -C flag for all installs
701 you may be able to add INSTALL+=-C to /etc/make.conf or
705 The install(1) option -M has changed meaning and now takes an
706 argument that is a file or path to append logs to. In the
707 unlikely event that -M was the last option on the command line
708 and the command line contained at least two files and a target
709 directory the first file will have logs appended to it. The -M
710 option served little practical purpose in the last decade so its
711 use is expected to be extremely rare.
714 After switching to Clang as the default compiler some users of ZFS
715 on i386 systems started to experience stack overflow kernel panics.
716 Please consider using 'options KSTACK_PAGES=4' in such configurations.
719 GEOM_LABEL now mangles label names read from file system metadata.
720 Mangling affect labels containing spaces, non-printable characters,
721 '%' or '"'. Device names in /etc/fstab and other places may need to
725 By default, only the 10 most recent kernel dumps will be saved. To
726 restore the previous behaviour (no limit on the number of kernel dumps
727 stored in the dump directory) add the following line to /etc/rc.conf:
732 With the addition of auditdistd(8), a new auditdistd user is now
733 required during installworld. "mergemaster -p" can be used to
734 add the user prior to installworld, as documented in the handbook.
737 The sin6_scope_id member variable in struct sockaddr_in6 is now
738 filled by the kernel before passing the structure to the userland via
739 sysctl or routing socket. This means the KAME-specific embedded scope
740 id in sin6_addr.s6_addr[2] is always cleared in userland application.
741 This behavior can be controlled by net.inet6.ip6.deembed_scopeid.
742 __FreeBSD_version is bumped to 1000025.
745 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default.
746 This means that the world and kernel will be compiled with clang
747 and that clang will be installed as /usr/bin/cc, /usr/bin/c++,
748 and /usr/bin/cpp. To disable this behavior and revert to building
749 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions
750 of current may need to bootstrap WITHOUT_CLANG first if the clang
751 build fails (its compatibility window doesn't extend to the 9 stable
755 The IPFIREWALL_FORWARD kernel option has been removed. Its
756 functionality now turned on by default.
759 The ZERO_COPY_SOCKET kernel option has been removed and
760 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP.
761 NB: SOCKET_SEND_COW uses the VM page based copy-on-write
762 mechanism which is not safe and may result in kernel crashes.
763 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current
764 driver supports disposeable external page sized mbuf storage.
765 Proper replacements for both zero-copy mechanisms are under
766 consideration and will eventually lead to complete removal
767 of the two kernel options.
770 The IPv4 network stack has been converted to network byte
771 order. The following modules need to be recompiled together
772 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4),
773 pf(4), ipfw(4), ng_ipfw(4), stf(4).
776 Support for non-MPSAFE filesystems was removed from VFS. The
777 VFS_VERSION was bumped, all filesystem modules shall be
781 All the non-MPSAFE filesystems have been disconnected from
782 the build. The full list includes: codafs, hpfs, ntfs, nwfs,
783 portalfs, smbfs, xfs.
786 The interface cloning API and ABI has changed. The following
787 modules need to be recompiled together with kernel:
788 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4),
789 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4),
790 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4).
793 The sdhci driver was split in two parts: sdhci (generic SD Host
794 Controller logic) and sdhci_pci (actual hardware driver).
795 No kernel config modifications are required, but if you
796 load sdhc as a module you must switch to sdhci_pci instead.
799 Import the FUSE kernel and userland support into base system.
802 The GNU sort(1) program has been removed since the BSD-licensed
803 sort(1) has been the default for quite some time and no serious
804 problems have been reported. The corresponding WITH_GNU_SORT
808 The pfil(9) API/ABI for AF_INET family has been changed. Packet
809 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled
813 The net80211(4) ABI has been changed to allow for improved driver
814 PS-POLL and power-save support. All wireless drivers need to be
815 recompiled to work with the new kernel.
818 The random(4) support for the VIA hardware random number
819 generator (`PADLOCK') is no longer enabled unconditionally.
820 Add the padlock_rng device in the custom kernel config if
821 needed. The GENERIC kernels on i386 and amd64 do include the
822 device, so the change only affects the custom kernel
826 The pf(4) packet filter ABI has been changed. pfctl(8) and
827 snmp_pf module need to be recompiled to work with new kernel.
830 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged
831 to -HEAD. Pools that have empty_bpobj in active state can not be
832 imported read-write with ZFS implementations that do not support
833 this feature. For more information read the zpool-features(5)
837 The sparc64 ZFS loader has been changed to no longer try to auto-
838 detect ZFS providers based on diskN aliases but now requires these
839 to be explicitly listed in the OFW boot-device environment variable.
842 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring
843 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are
844 configuration changes. Make sure to merge /etc/ssl/openssl.cnf.
847 The following sysctls and tunables have been renamed for consistency
848 with other variables:
849 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered
850 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered
853 The sort utility has been replaced with BSD sort. For now, GNU sort
854 is also available as "gnusort" or the default can be set back to
855 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be
856 installed as "bsdsort".
859 A new version of ZFS (pool version 5000) has been merged to -HEAD.
860 Starting with this version the old system of ZFS pool versioning
861 is superseded by "feature flags". This concept enables forward
862 compatibility against certain future changes in functionality of ZFS
863 pools. The first read-only compatible "feature flag" for ZFS pools
864 is named "com.delphix:async_destroy". For more information
865 read the new zpool-features(5) manual page.
866 Please refer to the "ZFS notes" section of this file for information
867 on upgrading boot ZFS pools.
870 The malloc(3) implementation embedded in libc now uses sources imported
871 as contrib/jemalloc. The most disruptive API change is to
872 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf,
873 delete it prior to installworld, and optionally re-create it using the
874 new format after rebooting. See malloc.conf(5) for details
875 (specifically the TUNING section and the "opt.*" entries in the MALLCTL
879 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb
880 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is
881 now spelled mips. This is to aid compatibility with third-party
882 software that expects this naming scheme in uname(3). Little-endian
883 settings are unchanged. If you are updating a big-endian mips64 machine
884 from before this change, you may need to set MACHINE_ARCH=mips64 in
885 your environment before the new build system will recognize your machine.
888 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported
892 Now unix domain sockets behave "as expected" on nullfs(5). Previously
893 nullfs(5) did not pass through all behaviours to the underlying layer,
894 as a result if we bound to a socket on the lower layer we could connect
895 only to the lower path; if we bound to the upper layer we could connect
896 only to the upper path. The new behavior is one can connect to both the
897 lower and the upper paths regardless what layer path one binds to.
900 The getifaddrs upgrade path broken with 20111215 has been restored.
901 If you have upgraded in between 20111215 and 20120209 you need to
902 recompile libc again with your kernel. You still need to recompile
903 world to be able to configure CARP but this restriction already
907 The set_rcvar() function has been removed from /etc/rc.subr. All
908 base and ports rc.d scripts have been updated, so if you have a
909 port installed with a script in /usr/local/etc/rc.d you can either
910 hand-edit the rcvar= line, or reinstall the port.
912 An easy way to handle the mass-update of /etc/rc.d:
913 rm /etc/rc.d/* && mergemaster -i
916 panic(9) now stops other CPUs in the SMP systems, disables interrupts
917 on the current CPU and prevents other threads from running.
918 This behavior can be reverted using the kern.stop_scheduler_on_panic
920 The new behavior can be incompatible with kern.sync_on_panic.
923 The carp(4) facility has been changed significantly. Configuration
924 of the CARP protocol via ifconfig(8) has changed, as well as format
925 of CARP events submitted to devd(8) has changed. See manual pages
926 for more information. The arpbalance feature of carp(4) is currently
927 not supported anymore.
929 Size of struct in_aliasreq, struct in6_aliasreq has changed. User
930 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8),
931 need to be recompiled.
934 The acpi_wmi(4) status device /dev/wmistat has been renamed to
938 The option VFS_ALLOW_NONMPSAFE option has been added in order to
939 explicitely support non-MPSAFE filesystems.
940 It is on by default for all supported platform at this present
944 The broken amd(4) driver has been replaced with esp(4) in the amd64,
945 i386 and pc98 GENERIC kernel configuration files.
948 sysinstall has been removed
951 The stable/9 branch created in subversion. This corresponds to the
952 RELENG_9 branch in CVS.
955 This commit modifies vfs_register() so that it uses a hash
956 calculation to set vfc_typenum, which is enabled by default.
957 The first time a system is booted after this change, the
958 vfc_typenum values will change for all file systems. The
959 main effect of this is a change to the NFS server file handles
960 for file systems that use vfc_typenum in their fsid, such as ZFS.
961 It will, however, prevent vfc_typenum from changing when file
962 systems are loaded in a different order for subsequent reboots.
963 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf
964 until you are ready to remount all NFS clients after a reboot.
967 Bump the shared library version numbers for libraries that
968 do not use symbol versioning, have changed the ABI compared
969 to stable/8 and which shared library version was not bumped.
970 Done as part of 9.0-RELEASE cycle.
973 During the merge of Capsicum features, the fget(9) KPI was modified.
974 This may require the rebuilding of out-of-tree device drivers --
975 issues have been reported specifically with the nVidia device driver.
976 __FreeBSD_version is bumped to 900041.
978 Also, there is a period between 20110811 and 20110814 where the
979 special devices /dev/{stdin,stdout,stderr} did not work correctly.
980 Building world from a kernel during that window may not work.
983 The packet filter (pf) code has been updated to OpenBSD 4.5.
984 You need to update userland tools to be in sync with kernel.
985 This update breaks backward compatibility with earlier pfsync(4)
986 versions. Care must be taken when updating redundant firewall setups.
989 The following sysctls and tunables are retired on x86 platforms:
991 machdep.hlt_logical_cpus
992 The following sysctl is retired:
993 machdep.hyperthreading_allowed
994 The sysctls were supposed to provide a way to dynamically offline and
995 online selected CPUs on x86 platforms, but the implementation has not
996 been reliable especially with SCHED_ULE scheduler.
997 machdep.hyperthreading_allowed tunable is still available to ignore
998 hyperthreading CPUs at OS level.
999 Individual CPUs can be disabled using hint.lapic.X.disabled tunable,
1000 where X is an APIC ID of a CPU. Be advised, though, that disabling
1001 CPUs in non-uniform fashion will result in non-uniform topology and
1002 may lead to sub-optimal system performance with SCHED_ULE, which is
1003 a default scheduler.
1006 cpumask_t type is retired and cpuset_t is used in order to describe
1010 Changes to ifconfig(8) for dynamic address family detection mandate
1011 that you are running a kernel of 20110525 or later. Make sure to
1012 follow the update procedure to boot a new kernel before installing
1016 Support for sun4v architecture is officially dropped
1019 Several KPI breaking changes have been committed to the mii(4) layer,
1020 the PHY drivers and consequently some Ethernet drivers using mii(4).
1021 This means that miibus.ko and the modules of the affected Ethernet
1022 drivers need to be recompiled.
1024 Note to kernel developers: Given that the OUI bit reversion problem
1025 was fixed as part of these changes all mii(4) commits related to OUIs,
1026 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific
1027 handling, no longer can be merged verbatim to stable/8 and previous
1031 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci'
1032 into their kernel configurations along with 'device pci'.
1035 The default NFS client is now the new NFS client, so fstype "newnfs"
1036 is now "nfs" and the regular/old NFS client is now fstype "oldnfs".
1037 Although mounts via fstype "nfs" will usually work without userland
1038 changes, it is recommended that the mount(8) and mount_nfs(8)
1039 commands be rebuilt from sources and that a link to mount_nfs called
1040 mount_oldnfs be created. The new client is compiled into the
1041 kernel with "options NFSCL" and this is needed for diskless root
1042 file systems. The GENERIC kernel configs have been changed to use
1043 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER.
1044 To use the regular/old client, you can "mount -t oldnfs ...". For
1045 a diskless root file system, you must also include a line like:
1047 vfs.root.mountfrom="oldnfs:"
1049 in the boot/loader.conf on the root fs on the NFS server to make
1050 a diskless root fs use the old client.
1053 The GENERIC kernels for all architectures now default to the new
1054 CAM-based ATA stack. It means that all legacy ATA drivers were
1055 removed and replaced by respective CAM drivers. If you are using
1056 ATA device names in /etc/fstab or other places, make sure to update
1057 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY,
1058 where 'Y's are the sequential numbers starting from zero for each type
1059 in order of detection, unless configured otherwise with tunables,
1060 see cam(4)). There will be symbolic links created in /dev/ to map
1061 old adX devices to the respective adaY. They should provide basic
1062 compatibility for file systems mounting in most cases, but they do
1063 not support old user-level APIs and do not have respective providers
1064 in GEOM. Consider using updated management tools with new device names.
1066 It is possible to load devices ahci, ata, siis and mvs as modules,
1067 but option ATA_CAM should remain in kernel configuration to make ata
1068 module work as CAM driver supporting legacy ATA controllers. Device ata
1069 still can be used in modular fashion (atacore + ...). Modules atadisk
1070 and atapi* are not used and won't affect operation in ATA_CAM mode.
1071 Note that to use CAM-based ATA kernel should include CAM devices
1072 scbus, pass, da (or explicitly ada), cd and optionally others. All of
1073 them are parts of the cam module.
1075 ataraid(4) functionality is now supported by the RAID GEOM class.
1076 To use it you can load geom_raid kernel module and use graid(8) tool
1077 for management. Instead of /dev/arX device names, use /dev/raid/rX.
1079 No kernel config options or code have been removed, so if a problem
1080 arises, please report it and optionally revert to the old ATA stack.
1081 In order to do it you can remove from the kernel config:
1086 , and instead add back:
1087 device atadisk # ATA disk drives
1088 device ataraid # ATA RAID drives
1089 device atapicd # ATAPI CDROM drives
1090 device atapifd # ATAPI floppy drives
1091 device atapist # ATAPI tape drives
1094 The default NFS server has been changed to the new server, which
1095 was referred to as the experimental server. If you need to switch
1096 back to the old NFS server, you must now put the "-o" option on
1097 both the mountd and nfsd commands. This can be done using the
1098 mountd_flags and nfs_server_flags rc.conf variables until an
1099 update to the rc scripts is committed, which is coming soon.
1102 The GNU Objective-C runtime library (libobjc), and other Objective-C
1103 related components have been removed from the base system. If you
1104 require an Objective-C library, please use one of the available ports.
1107 ath(4) has been split into bus- and device- modules. if_ath contains
1108 the HAL, the TX rate control and the network device code. if_ath_pci
1109 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb
1110 contains the AHB glue. Users need to load both if_ath_pci and if_ath
1111 in order to use ath on everything else.
1113 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only
1114 need to load if_ath and if_ath_pci for ath(4) operation.
1117 As part of the replacement of sysinstall, the process of building
1118 release media has changed significantly. For details, please re-read
1119 release(7), which has been updated to reflect the new build process.
1122 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This
1123 is the last available version under GPLv2. It brings a number of new
1124 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE
1125 4.1 and SSE 4.2), better support for powerpc64, a number of new
1126 directives, and lots of other small improvements. See the ChangeLog
1127 file in contrib/binutils for the full details.
1130 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868
1131 compliant, and will now use half of hash for authentication.
1132 This will break interoperability with all stacks (including all
1133 actual FreeBSD versions) who implement
1134 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for
1136 The only workaround with such peers is to use another HMAC
1137 algorithm for IPsec ("phase 2") authentication.
1140 Remove the uio_yield prototype and symbol. This function has
1141 been misnamed since it was introduced and should not be
1142 globally exposed with this name. The equivalent functionality
1143 is now available using kern_yield(curthread->td_user_pri).
1144 The function remains undocumented.
1147 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers,
1148 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking
1149 for scalar sysctls is defined but disabled. Code that needs
1150 UQUAD to pass the type checking that must compile on older
1151 systems where the define is not present can check against
1152 __FreeBSD_version >= 900030.
1154 The system dialog(1) has been replaced with a new version previously
1155 in ports as devel/cdialog. dialog(1) is mostly command-line compatible
1156 with the previous version, but the libdialog associated with it has
1157 a largely incompatible API. As such, the original version of libdialog
1158 will be kept temporarily as libodialog, until its base system consumers
1159 are replaced or updated. Bump __FreeBSD_version to 900030.
1162 If you are trying to run make universe on a -stable system, and you get
1163 the following warning:
1164 "Makefile", line 356: "Target architecture for i386/conf/GENERIC
1165 unknown. config(8) likely too old."
1166 or something similar to it, then you must upgrade your -stable system
1167 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in
1168 stable/8) or build the config from the latest stable/8 branch and
1169 install it on your system.
1171 Prior to this date, building a current universe on 8-stable system from
1172 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing
1173 error in the first kernel build phase. A new config on those old
1174 systems will fix that problem for older versions of -current.
1177 The TCP stack has been modified to allow Khelp modules to interact with
1178 it via helper hook points and store per-connection data in the TCP
1179 control block. Bump __FreeBSD_version to 900029. User space tools that
1180 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to
1184 Generic IEEE 802.3 annex 31B full duplex flow control support has been
1185 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along
1186 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted
1187 to take advantage of it instead of using custom implementations. This
1188 means that these drivers now no longer unconditionally advertise
1189 support for flow control but only do so if flow control is a selected
1190 media option. This was implemented in the generic support that way in
1191 order to allow flow control to be switched on and off via ifconfig(8)
1192 with the PHY specific default to typically off in order to protect
1193 from unwanted effects. Consequently, if you used flow control with
1194 one of the above mentioned drivers you now need to explicitly enable
1195 it, for example via:
1196 ifconfig bge0 media auto mediaopt flowcontrol
1198 Along with the above mentioned changes generic support for setting
1199 1000baseT master mode also has been added and brgphy(4), ciphy(4),
1200 e1000phy(4) as well as ip1000phy(4) have been converted to take
1201 advantage of it. This means that these drivers now no longer take the
1202 link0 parameter for selecting master mode but the master media option
1203 has to be used instead, for example like in the following:
1204 ifconfig bge0 media 1000baseT mediaopt full-duplex,master
1206 Selection of master mode now is also available with all other PHY
1207 drivers supporting 1000baseT.
1210 The TCP stack has received a significant update to add support for
1211 modularised congestion control and generally improve the clarity of
1212 congestion control decisions. Bump __FreeBSD_version to 900025. User
1213 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g.
1214 sockstat) need to be recompiled.
1217 The man(1) utility has been replaced by a new version that no longer
1218 uses /etc/manpath.config. Please consult man.conf(5) for how to
1219 migrate local entries to the new format.
1222 The copyright strings printed by login(1) and sshd(8) at the time of a
1223 new connection have been removed to follow other operating systems and
1227 A workaround for a fixed ld bug has been removed in kernel code,
1228 so make sure that your system ld is built from sources after
1229 revision 210245 from 2010-07-19 (r211583 if building head kernel
1230 on stable/8, r211584 for stable/7; both from 2010-08-21).
1231 A symptom of incorrect ld version is different addresses for
1232 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules.
1235 The $ipv6_prefer variable in rc.conf(5) has been split into
1236 $ip6addrctl_policy and $ipv6_activate_all_interfaces.
1238 The $ip6addrctl_policy is a variable to choose a pre-defined
1239 address selection policy set by ip6addrctl(8). A value
1240 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The
1243 The $ipv6_activate_all_interfaces specifies whether IFDISABLED
1244 flag (see an entry of 20090926) is set on an interface with no
1245 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for
1246 security reason. If you want IPv6 link-local address on all
1247 interfaces by default, set this to "YES".
1249 The old ipv6_prefer="YES" is equivalent to
1250 ipv6_activate_all_interfaces="YES" and
1251 ip6addrctl_policy="ipv6_prefer".
1254 DTrace has grown support for userland tracing. Due to this, DTrace is
1255 now i386 and amd64 only.
1256 dtruss(1) is now installed by default on those systems and a new
1257 kernel module is needed for userland tracing: fasttrap.
1258 No changes to your kernel config file are necessary to enable
1259 userland tracing, but you might consider adding 'STRIP=' and
1260 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want
1261 to have informative userland stack traces in DTrace (ustack).
1264 The acpi_aiboost(4) driver has been removed in favor of the new
1265 aibs(4) driver. You should update your kernel configuration file.
1268 BSD grep has been imported to the base system and it is built by
1269 default. It is completely BSD licensed, highly GNU-compatible, uses
1270 less memory than its GNU counterpart and has a small codebase.
1271 However, it is slower than its GNU counterpart, which is mostly
1272 noticeable for larger searches, for smaller ones it is measurable
1273 but not significant. The reason is complex, the most important factor
1274 is that we lack a modern and efficient regex library and GNU
1275 overcomes this by optimizing the searches internally. Future work
1276 on improving the regex performance is planned, for the meantime,
1277 users that need better performance, can build GNU grep instead by
1278 setting the WITH_GNU_GREP knob.
1281 Due to the import of powerpc64 support, all existing powerpc kernel
1282 configuration files must be updated with a machine directive like this:
1283 machine powerpc powerpc
1285 In addition, an updated config(8) is required to build powerpc kernels
1289 A new version of ZFS (version 15) has been merged to -HEAD.
1290 This version uses a python library for the following subcommands:
1291 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
1292 For full functionality of these commands the following port must
1293 be installed: sysutils/py-zfs
1296 'vm_page's are now hashed by physical address to an array of mutexes.
1297 Currently this is only used to serialize access to hold_count. Over
1298 time the page queue mutex will be peeled away. This changes the size
1299 of pmap on every architecture. And requires all callers of vm_page_hold
1300 and vm_page_unhold to be updated.
1303 WITH_CTF can now be specified in src.conf (not recommended, there
1304 are some problems with static executables), make.conf (would also
1305 affect ports which do not use GNU make and do not override the
1306 compile targets) or in the kernel config (via "makeoptions
1308 When WITH_CTF was specified there before this was silently ignored,
1309 so make sure that WITH_CTF is not used in places which could lead
1310 to unwanted behavior.
1313 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
1314 to allow 32-bit compatibility on non-x86 platforms. All kernel
1315 configurations on amd64 and ia64 platforms using these options must
1316 be modified accordingly.
1319 The utmp user accounting database has been replaced with utmpx,
1320 the user accounting interface standardized by POSIX.
1321 Unfortunately the semantics of utmp and utmpx don't match,
1322 making it practically impossible to support both interfaces.
1323 The user accounting database is used by tools like finger(1),
1324 last(1), talk(1), w(1) and ac(8).
1326 All applications in the base system use utmpx. This means only
1327 local binaries (e.g. from the ports tree) may still use these
1328 utmp database files. These applications must be rebuilt to make
1331 After the system has been upgraded, it is safe to remove the old
1332 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*),
1333 assuming their contents is of no importance anymore. Old wtmp
1334 databases can only be used by last(1) and ac(8) after they have
1335 been converted to the new format using wtmpcvt(1).
1338 Introduce the kernel thread "deadlock resolver" (which can be enabled
1339 via the DEADLKRES option, see NOTES for more details) and the
1340 sleepq_type() function for sleepqueues.
1343 The rc.firewall and rc.firewall6 were unified, and
1344 rc.firewall6 and rc.d/ip6fw were removed.
1345 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
1346 variables are obsoleted. Instead, the following new rc
1347 variables are added to rc.d/ipfw:
1349 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
1350 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
1351 firewall_simple_onet_ipv6, firewall_trusted_ipv6
1353 The meanings correspond to the relevant IPv4 variables.
1359 The default terminal emulation for syscons(4) has been changed
1360 from cons25 to xterm on all platforms except pc98. This means
1361 that the /etc/ttys file needs to be updated to ensure correct
1362 operation of applications on the console.
1364 The terminal emulation style can be toggled per window by using
1365 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration
1366 options can be used to change the compile-time default back to
1369 To prevent graphical artifacts, make sure the TERM environment
1370 variable is set to match the terminal emulation that is being
1371 performed by syscons(4).
1374 The layout of the structure ieee80211req_scan_result has changed.
1375 Applications that require wireless scan results (e.g. ifconfig(8))
1376 from net80211 need to be recompiled.
1378 Applications such as wpa_supplicant(8) may require a full world
1379 build without using NO_CLEAN in order to get synchronized with the
1383 The iwn(4) driver has been updated to support the 5000 and 5150 series.
1384 There's one kernel module for each firmware. Adding "device iwnfw"
1385 to the kernel configuration file means including all three firmware
1386 images inside the kernel. If you want to include just the one for
1387 your wireless card, use the devices iwn4965fw, iwn5000fw or
1391 The rc.d/network_ipv6, IPv6 configuration script has been integrated
1392 into rc.d/netif. The changes are the following:
1394 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF
1395 for IPv4. For aliases, $ifconfig_IF_aliasN should be used.
1396 Note that both variables need the "inet6" keyword at the head.
1398 Do not set $ipv6_network_interfaces manually if you do not
1399 understand what you are doing. It is not needed in most cases.
1401 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but
1404 2. $ipv6_enable is obsolete. Use $ipv6_prefer and
1405 "inet6 accept_rtadv" keyword in ifconfig(8) instead.
1407 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and
1408 all configured interfaces have "inet6 accept_rtadv" in the
1409 $ifconfig_IF_ipv6. These are for backward compatibility.
1411 3. A new variable $ipv6_prefer has been added. If NO, IPv6
1412 functionality of interfaces with no corresponding
1413 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag,
1414 and the default address selection policy of ip6addrctl(8)
1415 is the IPv4-preferred one (see rc.d/ip6addrctl for more details).
1416 Note that if you want to configure IPv6 functionality on the
1417 disabled interfaces after boot, first you need to clear the flag by
1418 using ifconfig(8) like:
1420 ifconfig em0 inet6 -ifdisabled
1422 If YES, the default address selection policy is set as
1425 The default value of $ipv6_prefer is NO.
1427 4. If your system need to receive Router Advertisement messages,
1428 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8)
1429 scripts automatically invoke rtsol(8) when the interface becomes
1430 UP. The Router Advertisement messages are used for SLAAC
1431 (State-Less Address AutoConfiguration).
1434 802.11s D3.03 support was committed. This is incompatible with the
1435 previous code, which was based on D3.0.
1438 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value
1439 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to
1440 control whether accepting Router Advertisement messages or not.
1441 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and
1442 a sysctl variable net.inet6.ip6.auto_linklocal is its default value.
1443 The ifconfig(8) utility now supports these flags.
1446 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
1447 mount(8) and -a option for df(1) to see them.
1450 The old tunable hw.bus.devctl_disable has been superseded by
1451 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be
1452 replaced by hw.bus.devctl_queue=0. The default for this new tunable
1456 Remove the option STOP_NMI. The default action is now to use NMI only
1457 for KDB via the newly introduced function stop_cpus_hard() and
1458 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64.
1461 The stable/8 branch created in subversion. This corresponds to the
1462 RELENG_8 branch in CVS.
1465 Bump the shared library version numbers for all libraries that do not
1466 use symbol versioning as part of the 8.0-RELEASE cycle. Bump
1467 __FreeBSD_version to 800105.
1470 Due to changes in the implementation of virtual network stack support,
1471 all network-related kernel modules must be recompiled. As this change
1472 breaks the ABI, bump __FreeBSD_version to 800104.
1475 The TOE interface to the TCP syncache has been modified to remove
1476 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack.
1477 The cxgb driver is the only TOE consumer affected by this change, and
1478 needs to be recompiled along with the kernel. As this change breaks
1479 the ABI, bump __FreeBSD_version to 800103.
1482 Padding has been added to struct tcpcb, sackhint and tcpstat in
1483 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
1484 maintaining the ABI. However, this change breaks the ABI, so bump
1485 __FreeBSD_version to 800102. User space tools that rely on the size of
1486 any of these structs (e.g. sockstat) need to be recompiled.
1489 The NFS_LEGACYRPC option has been removed along with the old kernel
1490 RPC implementation that this option selected. Kernel configurations
1491 may need to be adjusted.
1494 The network interface device nodes at /dev/net/<interface> have been
1495 removed. All ioctl operations can be performed the normal way using
1496 routing sockets. The kqueue functionality can generally be replaced
1497 with routing sockets.
1500 The documentation from the FreeBSD Documentation Project (Handbook,
1501 FAQ, etc.) is now installed via packages by sysinstall(8) and under
1502 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc.
1505 The ABI of various structures related to the SYSV IPC API have been
1506 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel
1507 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to
1511 Layout of struct vnet has changed as routing related variables were
1512 moved to their own Vimage module. Modules need to be recompiled. Bump
1513 __FreeBSD_version to 800099.
1516 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024
1517 respectively. As long as no more than 16 groups per process are used,
1518 no changes should be visible. When more than 16 groups are used, old
1519 binaries may fail if they call getgroups() or getgrouplist() with
1520 statically sized storage. Recompiling will work around this, but
1521 applications should be modified to use dynamically allocated storage
1522 for group arrays as POSIX.1-2008 does not cap an implementation's
1523 number of supported groups at NGROUPS_MAX+1 as previous versions did.
1525 NFS and portalfs mounts may also be affected as the list of groups is
1526 truncated to 16. Users of NFS who use more than 16 groups, should
1527 take care that negative group permissions are not used on the exported
1528 file systems as they will not be reliable unless a GSSAPI based
1529 authentication method is used.
1532 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This
1533 option compiles in the support for adaptive spinning for lockmgrs
1534 which want to enable it. The lockinit() function now accepts the flag
1535 LK_ADAPTIVE in order to make the lock object subject to adaptive
1536 spinning when both held in write and read mode.
1539 The layout of the structure returned by IEEE80211_IOC_STA_INFO has
1540 changed. User applications that use this ioctl need to be rebuilt.
1543 The layout of struct thread has changed. Kernel and modules need to
1547 The layout of structs ifnet, domain, protosw and vnet_net has changed.
1548 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097.
1551 window(1) has been removed from the base system. It can now be
1552 installed from ports. The port is called misc/window.
1555 The way we are storing and accessing `routing table' entries has
1556 changed. Programs reading the FIB, like netstat, need to be
1560 A new netisr implementation has been added for FreeBSD 8. Network
1561 file system modules, such as igmp, ipdivert, and others, should be
1563 Bump __FreeBSD_version to 800096.
1566 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no
1570 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
1571 Bump __FreeBSD_version to 800094.
1574 Add mnt_xflag field to 'struct mount'. File system modules need to be
1576 Bump __FreeBSD_version to 800093.
1579 The compiling option ADAPTIVE_SX has been retired while it has been
1580 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
1581 The KPI for sx_init_flags() changes as accepting flags:
1582 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has
1583 been introduced in order to handle the reversed logic.
1584 Bump __FreeBSD_version to 800092.
1587 Add support for hierarchical jails. Remove global securelevel.
1588 Bump __FreeBSD_version to 800091.
1591 The layout of struct vnet_net has changed, therefore modules
1593 Bump __FreeBSD_version to 800090.
1596 The newly imported zic(8) produces a new format in the output. Please
1597 run tzsetup(8) to install the newly created data to /etc/localtime.
1600 The sysctl tree for the usb stack has renamed from hw.usb2.* to
1601 hw.usb.* and is now consistent again with previous releases.
1604 802.11 monitor mode support was revised and driver api's were changed.
1605 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead
1606 of DLT_IEEE802_11. No user-visible data structures were changed but
1607 applications that use DLT_IEEE802_11 may require changes.
1608 Bump __FreeBSD_version to 800088.
1611 The layout of the following structs has changed: sysctl_oid,
1612 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
1613 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
1614 panics may be experienced. World rebuild is required for
1615 correctly checking networking state from userland.
1616 Bump __FreeBSD_version to 800085.
1619 MLDv2 and Source-Specific Multicast (SSM) have been merged
1620 to the IPv6 stack. VIMAGE hooks are in but not yet used.
1621 The implementation of SSM within FreeBSD's IPv6 stack closely
1622 follows the IPv4 implementation.
1624 For kernel developers:
1626 * The most important changes are that the ip6_output() and
1627 ip6_input() paths no longer take the IN6_MULTI_LOCK,
1628 and this lock has been downgraded to a non-recursive mutex.
1630 * As with the changes to the IPv4 stack to support SSM, filtering
1631 of inbound multicast traffic must now be performed by transport
1632 protocols within the IPv6 stack. This does not apply to TCP and
1633 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
1635 * The KPIs used by IPv6 multicast are similar to those used by
1636 the IPv4 stack, with the following differences:
1637 * im6o_mc_filter() is analogous to imo_multicast_filter().
1638 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
1639 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
1640 * IN6_LOOKUP_MULTI() has been deprecated and removed.
1641 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
1642 for MLDv1 have an additional 'timer' argument which is used to
1643 jitter the initial membership report for the solicited-node
1644 multicast membership on-link.
1645 * This is not strictly needed for MLDv2, which already jitters
1646 its report transmissions. However, the 'timer' argument is
1647 preserved in case MLDv1 is active on the interface.
1649 * The KAME linked-list based IPv6 membership implementation has
1650 been refactored to use a vector similar to that used by the IPv4
1652 Code which maintains a list of its own multicast memberships
1653 internally, e.g. carp, has been updated to reflect the new
1656 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
1657 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
1658 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
1659 implementation constraint which needs to be addressed in HEAD.
1661 For application developers:
1663 * The changes are broadly similar to those made for the IPv4
1666 * The use of IPv4 and IPv6 multicast socket options on the same
1667 socket, using mapped addresses, HAS NOT been tested or supported.
1669 * There are a number of issues with the implementation of various
1670 IPv6 multicast APIs which need to be resolved in the API surface
1671 before the implementation is fully compatible with KAME userland
1672 use, and these are mostly to do with interface index treatment.
1674 * The literature available discusses the use of either the delta / ASM
1675 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
1676 using setsourcefilter(3)/getsourcefilter(3). For more information
1677 please refer to RFC 3768, 'Socket Interface Extensions for
1678 Multicast Source Filters'.
1680 * Applications which use the published RFC 3678 APIs should be fine.
1682 For systems administrators:
1684 * The mtest(8) utility has been refactored to support IPv6, in
1685 addition to IPv4. Interface addresses are no longer accepted
1686 as arguments, their names must be used instead. The utility
1687 will map the interface name to its first IPv4 address as
1688 returned by getifaddrs(3).
1690 * The ifmcstat(8) utility has also been updated to print the MLDv2
1691 endpoint state and source filter lists via sysctl(3).
1693 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
1694 loopback of IPv6 multicast datagrams by default; it defaults to 1
1695 to preserve the existing behaviour. Disabling multicast loopback is
1696 recommended for optimal system performance.
1698 * The IPv6 MROUTING code has been changed to examine this sysctl
1699 instead of attempting to perform a group lookup before looping
1700 back forwarded datagrams.
1702 Bump __FreeBSD_version to 800084.
1705 Implement low-level Bluetooth HCI API.
1706 Bump __FreeBSD_version to 800083.
1709 The layout of struct malloc_type, used by modules to register new
1710 memory allocation types, has changed. Most modules will need to
1711 be rebuilt or panics may be experienced.
1712 Bump __FreeBSD_version to 800081.
1715 Anticipate overflowing inp_flags - add inp_flags2.
1716 This changes most offsets in inpcb, so checking v4 connection
1717 state will require a world rebuild.
1718 Bump __FreeBSD_version to 800080.
1721 Add an llentry to struct route and struct route_in6. Modules
1722 embedding a struct route will need to be recompiled.
1723 Bump __FreeBSD_version to 800079.
1726 The size of rt_metrics_lite and by extension rtentry has changed.
1727 Networking administration apps will need to be recompiled.
1728 The route command now supports show as an alias for get, weighting
1729 of routes, sticky and nostick flags to alter the behavior of stateful
1731 Bump __FreeBSD_version to 800078.
1734 Do not use Giant for kbdmux(4) locking. This is wrong and
1735 apparently causing more problems than it solves. This will
1736 re-open the issue where interrupt handlers may race with
1737 kbdmux(4) in polling mode. Typical symptoms include (but
1738 not limited to) duplicated and/or missing characters when
1739 low level console functions (such as gets) are used while
1740 interrupts are enabled (for example geli password prompt,
1741 mountroot prompt etc.). Disabling kbdmux(4) may help.
1744 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
1745 kernel modules referencing any of the above need to be recompiled.
1746 Bump __FreeBSD_version to 800075.
1749 GEOM_PART has become the default partition slicer for storage devices,
1750 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
1751 introduces some changes:
1753 MSDOS/EBR: the devices created from MSDOS extended partition entries
1754 (EBR) can be named differently than with GEOM_MBR and are now symlinks
1755 to devices with offset-based names. fstabs may need to be modified.
1757 BSD: the "geometry does not match label" warning is harmless in most
1758 cases but it points to problems in file system misalignment with
1759 disk geometry. The "c" partition is now implicit, covers the whole
1760 top-level drive and cannot be (mis)used by users.
1762 General: Kernel dumps are now not allowed to be written to devices
1763 whose partition types indicate they are meant to be used for file
1764 systems (or, in case of MSDOS partitions, as something else than
1767 Most of these changes date approximately from 200812.
1770 The uscanner(4) driver has been removed from the kernel. This follows
1771 Linux removing theirs in 2.6 and making libusb the default interface
1772 (supported by sane).
1775 The multicast forwarding code has been cleaned up. netstat(1)
1776 only relies on KVM now for printing bandwidth upcall meters.
1777 The IPv4 and IPv6 modules are split into ip_mroute_mod and
1778 ip6_mroute_mod respectively. The config(5) options for statically
1779 compiling this code remain the same, i.e. 'options MROUTING'.
1782 Support for the IFF_NEEDSGIANT network interface flag has been
1783 removed, which means that non-MPSAFE network device drivers are no
1784 longer supported. In particular, if_ar, if_sr, and network device
1785 drivers from the old (legacy) USB stack can no longer be built or
1789 POSIX.1 Native Language Support (NLS) has been enabled in libc and
1790 a bunch of new language catalog files have also been added.
1791 This means that some common libc messages are now localized and
1792 they depend on the LC_MESSAGES environmental variable.
1795 The k8temp(4) driver has been renamed to amdtemp(4) since
1796 support for Family 10 and Family 11 CPU families was added.
1799 IGMPv3 and Source-Specific Multicast (SSM) have been merged
1800 to the IPv4 stack. VIMAGE hooks are in but not yet used.
1802 For kernel developers, the most important changes are that the
1803 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
1804 and this lock has been downgraded to a non-recursive mutex.
1806 Transport protocols (UDP, Raw IP) are now responsible for filtering
1807 inbound multicast traffic according to group membership and source
1808 filters. The imo_multicast_filter() KPI exists for this purpose.
1809 Transports which do not use multicast (SCTP, TCP) already reject
1810 multicast by default. Forwarding and receive performance may improve
1811 as a mutex acquisition is no longer needed in the ip_input()
1812 low-level input path. in_addmulti() and in_delmulti() are shimmed
1813 to new KPIs which exist to support SSM in-kernel.
1815 For application developers, it is recommended that loopback of
1816 multicast datagrams be disabled for best performance, as this
1817 will still cause the lock to be taken for each looped-back
1818 datagram transmission. The net.inet.ip.mcast.loop sysctl may
1819 be tuned to 0 to disable loopback by default; it defaults to 1
1820 to preserve the existing behaviour.
1822 For systems administrators, to obtain best performance with
1823 multicast reception and multiple groups, it is always recommended
1824 that a card with a suitably precise hash filter is used. Hash
1825 collisions will still result in the lock being taken within the
1826 transport protocol input path to check group membership.
1828 If deploying FreeBSD in an environment with IGMP snooping switches,
1829 it is recommended that the net.inet.igmp.sendlocal sysctl remain
1830 enabled; this forces 224.0.0.0/24 group membership to be announced
1833 The size of 'struct igmpstat' has changed; netstat needs to be
1834 recompiled to reflect this.
1835 Bump __FreeBSD_version to 800070.
1838 libusb20.so.1 is now installed as libusb.so.1 and the ports system
1839 updated to use it. This requires a buildworld/installworld in order to
1840 update the library and dependencies (usbconfig, etc). Its advisable to
1841 rebuild all ports which uses libusb. More specific directions are given
1842 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
1843 libusb are no longer required and can be removed.
1846 A workaround is committed to allow the creation of System V shared
1847 memory segment of size > 2 GB on the 64-bit architectures.
1848 Due to a limitation of the existing ABI, the shm_segsz member
1849 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
1850 wrong for large segments. Note that limits must be explicitly
1851 raised to allow such segments to be created.
1854 The layout of struct ifnet has changed, requiring a rebuild of all
1855 network device driver modules.
1858 The /dev handling for the new USB stack has changed, a
1859 buildworld/installworld is required for libusb20.
1862 The new USB2 stack has now been permanently moved in and all kernel and
1863 module names reverted to their previous values (eg, usb, ehci, ohci,
1864 ums, ...). The old usb stack can be compiled in by prefixing the name
1865 with the letter 'o', the old usb modules have been removed.
1866 Updating entry 20090216 for xorg and 20090215 for libmap may still
1870 The rc.conf(5) option if_up_delay has been renamed to
1871 defaultroute_delay to better reflect its purpose. If you have
1872 customized this setting in /etc/rc.conf you need to update it to
1876 xorg 7.4 wants to configure its input devices via hald which does not
1877 yet work with USB2. If the keyboard/mouse does not work in xorg then
1879 Option "AllowEmptyInput" "off"
1880 to your ServerLayout section. This will cause X to use the configured
1881 kbd and mouse sections from your xorg.conf.
1884 The GENERIC kernels for all architectures now default to the new USB2
1885 stack. No kernel config options or code have been removed so if a
1886 problem arises please report it and optionally revert to the old USB
1887 stack. If you are loading USB kernel modules or have a custom kernel
1888 that includes GENERIC then ensure that usb names are also changed over,
1889 eg uftdi -> usb2_serial_ftdi.
1891 Older programs linked against the ports libusb 0.1 need to be
1892 redirected to the new stack's libusb20. /etc/libmap.conf can
1894 # Map old usb library to new one for usb2 stack
1895 libusb-0.1.so.8 libusb20.so.1
1898 All USB ethernet devices now attach as interfaces under the name ueN
1899 (eg. ue0). This is to provide a predictable name as vendors often
1900 change usb chipsets in a product without notice.
1903 The ichsmb(4) driver has been changed to require SMBus slave
1904 addresses be left-justified (xxxxxxx0b) rather than right-justified.
1905 All of the other SMBus controller drivers require left-justified
1906 slave addresses, so this change makes all the drivers provide the
1910 INET6 statistics (struct ip6stat) was updated.
1911 netstat(1) needs to be recompiled.
1914 NTFS has been removed from GENERIC kernel on amd64 to match
1915 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
1916 will load ntfs.ko module automatically when NTFS support is
1917 actually needed, unless ntfs.ko is not installed or security
1918 level prohibits loading kernel modules. If either is the case,
1919 "options NTFS" has to be added into kernel config.
1922 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
1923 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
1924 800061. User space tools that rely on the size of struct tcpcb in
1925 tcp_var.h (e.g. sockstat) need to be recompiled.
1928 ng_tty(4) module updated to match the new TTY subsystem.
1929 Due to API change, user-level applications must be updated.
1930 New API support added to mpd5 CVS and expected to be present
1931 in next mpd5.3 release.
1934 With __FreeBSD_version 800060 the makefs tool is part of
1935 the base system (it was a port).
1938 The afdata and ifnet locks have been changed from mutexes to
1939 rwlocks, network modules will need to be re-compiled.
1942 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
1943 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
1944 The new code reduced struct rtentry{} by 16 bytes on 32-bit
1945 architecture and 40 bytes on 64-bit architecture. The userland
1946 applications "arp" and "ndp" have been updated accordingly.
1947 The output from "netstat -r" shows only routing entries and
1948 none of the L2 information.
1951 __FreeBSD_version 800057 marks the switchover from the
1952 binary ath hal to source code. Users must add the line:
1954 options AH_SUPPORT_AR5416
1956 to their kernel config files when specifying:
1960 The ath_hal module no longer exists; the code is now compiled
1961 together with the driver in the ath module. It is now
1962 possible to tailor chip support (i.e. reduce the set of chips
1963 and thereby the code size); consult ath_hal(4) for details.
1966 __FreeBSD_version 800054 adds memory barriers to
1967 <machine/atomic.h>, new interfaces to ifnet to facilitate
1968 multiple hardware transmit queues for cards that support
1969 them, and a lock-less ring-buffer implementation to
1970 enable drivers to more efficiently manage queueing of
1974 A new version of ZFS (version 13) has been merged to -HEAD.
1975 This version has zpool attribute "listsnapshots" off by
1976 default, which means "zfs list" does not show snapshots,
1977 and is the same as Solaris behavior.
1980 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
1983 The uhci, ohci, ehci and slhci USB Host controller drivers have
1984 been put into separate modules. If you load the usb module
1985 separately through loader.conf you will need to load the
1986 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
1987 controller add the following to loader.conf:
1993 The ABI used by the PMC toolset has changed. Please keep
1994 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
1998 atapci kernel module now includes only generic PCI ATA
1999 driver. AHCI driver moved to ataahci kernel module.
2000 All vendor-specific code moved into separate kernel modules:
2001 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
2002 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
2003 atamarvell, atamicron, atanational, atanetcell, atanvidia,
2004 atapromise, ataserverworks, atasiliconimage, atasis, atavia
2007 The TTY subsystem of the kernel has been replaced by a new
2008 implementation, which provides better scalability and an
2009 improved driver model. Most common drivers have been migrated to
2010 the new TTY subsystem, while others have not. The following
2011 drivers have not yet been ported to the new TTY layer:
2014 cy, digi, rc, rp, sio
2020 ng_h4, ng_tty, ppp, sl, snp
2022 Adding these drivers to your kernel configuration file shall
2023 cause compilation to fail.
2026 ntpd has been upgraded to 4.2.4p5.
2029 OpenSSH has been upgraded to 5.1p1.
2031 For many years, FreeBSD's version of OpenSSH preferred DSA
2032 over RSA for host and user authentication keys. With this
2033 upgrade, we've switched to the vendor's default of RSA over
2034 DSA. This may cause upgraded clients to warn about unknown
2035 host keys even for previously known hosts. Users should
2036 follow the usual procedure for verifying host keys before
2037 accepting the RSA key.
2039 This can be circumvented by setting the "HostKeyAlgorithms"
2040 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
2043 Please note that the sequence of keys offered for
2044 authentication has been changed as well. You may want to
2045 specify IdentityFile in a different order to revert this
2049 The sio(4) driver has been removed from the i386 and amd64
2050 kernel configuration files. This means uart(4) is now the
2051 default serial port driver on those platforms as well.
2053 To prevent collisions with the sio(4) driver, the uart(4) driver
2054 uses different names for its device nodes. This means the
2055 onboard serial port will now most likely be called "ttyu0"
2056 instead of "ttyd0". You may need to reconfigure applications to
2057 use the new device names.
2059 When using the serial port as a boot console, be sure to update
2060 /boot/device.hints and /etc/ttys before booting the new kernel.
2061 If you forget to do so, you can still manually specify the hints
2062 at the loader prompt:
2064 set hint.uart.0.at="isa"
2065 set hint.uart.0.port="0x3F8"
2066 set hint.uart.0.flags="0x10"
2067 set hint.uart.0.irq="4"
2071 The gpt(8) utility has been removed. Use gpart(8) to partition
2075 The version that Linuxulator emulates was changed from 2.4.2
2076 to 2.6.16. If you experience any problems with Linux binaries
2077 please try to set sysctl compat.linux.osrelease to 2.4.2 and
2078 if it fixes the problem contact emulation mailing list.
2081 ISDN4BSD (I4B) was removed from the src tree. You may need to
2082 update a your kernel configuration and remove relevant entries.
2085 I have checked in code to support multiple routing tables.
2086 See the man pages setfib(1) and setfib(2).
2087 This is a hopefully backwards compatible version,
2088 but to make use of it you need to compile your kernel
2089 with options ROUTETABLES=2 (or more up to 16).
2092 The 802.11 wireless support was redone to enable multi-bss
2093 operation on devices that are capable. The underlying device
2094 is no longer used directly but instead wlanX devices are
2095 cloned with ifconfig. This requires changes to rc.conf files.
2096 For example, change:
2097 ifconfig_ath0="WPA DHCP"
2100 ifconfig_wlan0="WPA DHCP"
2101 see rc.conf(5) for more details. In addition, mergemaster of
2102 /etc/rc.d is highly recommended. Simultaneous update of userland
2103 and kernel wouldn't hurt either.
2105 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
2106 modules were merged into the base wlan module. All references
2107 to these modules (e.g. in kernel config files) must be removed.
2110 psm(4) has gained write(2) support in native operation level.
2111 Arbitrary commands can be written to /dev/psm%d and status can
2112 be read back from it. Therefore, an application is responsible
2113 for status validation and error recovery. It is a no-op in
2114 other operation levels.
2117 Support for KSE threading has been removed from the kernel. To
2118 run legacy applications linked against KSE libmap.conf may
2119 be used. The following libmap.conf may be used to ensure
2120 compatibility with any prior release:
2122 libpthread.so.1 libthr.so.1
2123 libpthread.so.2 libthr.so.2
2124 libkse.so.3 libthr.so.3
2127 The layout of struct vmspace has changed. This affects libkvm
2128 and any executables that link against libkvm and use the
2129 kvm_getprocs() function. In particular, but not exclusively,
2130 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
2131 The effects are minimal, but it's advisable to upgrade world
2135 The latest em driver no longer has support in it for the
2136 82575 adapter, this is now moved to the igb driver. The
2137 split was done to make new features that are incompatible
2138 with older hardware easier to do.
2141 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
2142 likewise the kernel option is now GEOM_LINUX_LVM.
2145 The default NFS mount mode has changed from UDP to TCP for
2146 increased reliability. If you rely on (insecurely) NFS
2147 mounting across a firewall you may need to update your
2151 Belatedly note the addition of m_collapse for compacting
2155 The fts(3) structures have been changed to use adequate
2156 integer types for their members and so to be able to cope
2157 with huge file trees. The old fts(3) ABI is preserved
2158 through symbol versioning in libc, so third-party binaries
2159 using fts(3) should still work, although they will not take
2160 advantage of the extended types. At the same time, some
2161 third-party software might fail to build after this change
2162 due to unportable assumptions made in its source code about
2163 fts(3) structure members. Such software should be fixed
2164 by its vendor or, in the worst case, in the ports tree.
2165 FreeBSD_version 800015 marks this change for the unlikely
2166 case that a portable fix is impossible.
2169 To upgrade to -current after this date, you must be running
2170 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
2171 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
2174 The ADAPTIVE_GIANT kernel option has been retired because its
2175 functionality is the default now.
2178 The AT keyboard emulation of sunkbd(4) has been turned on
2179 by default. In order to make the special symbols of the Sun
2180 keyboards driven by sunkbd(4) work under X these now have
2181 to be configured the same way as Sun USB keyboards driven
2182 by ukbd(4) (which also does AT keyboard emulation), f.e.:
2184 Option "XkbLayout" "us"
2185 Option "XkbRules" "xorg"
2186 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
2189 It has been decided that it is desirable to provide ABI
2190 backwards compatibility to the FreeBSD 4/5/6 versions of the
2191 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
2192 broken with the introduction of PCI domain support (see the
2193 20070930 entry). Unfortunately, this required the ABI of
2194 PCIOCGETCONF to be broken again in order to be able to
2195 provide backwards compatibility to the old version of that
2196 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
2197 again. As for prominent ports this affects neither pciutils
2198 nor xorg-server this time, the hal port needs to be rebuilt
2202 The misnamed kthread_create() and friends have been renamed
2203 to kproc_create() etc. Many of the callers already
2204 used kproc_start()..
2205 I will return kthread_create() and friends in a while
2206 with implementations that actually create threads, not procs.
2207 Renaming corresponds with version 800002.
2216 Avoid using make -j when upgrading. While generally safe, there are
2217 sometimes problems using -j to upgrade. If your upgrade fails with
2218 -j, please try again without -j. From time to time in the past there
2219 have been problems using -j with buildworld and/or installworld. This
2220 is especially true when upgrading between "distant" versions (eg one
2221 that cross a major release boundary or several minor releases, or when
2222 several months have passed on the -current branch).
2224 Sometimes, obscure build problems are the result of environment
2225 poisoning. This can happen because the make utility reads its
2226 environment when searching for values for global variables. To run
2227 your build attempts in an "environmental clean room", prefix all make
2228 commands with 'env -i '. See the env(1) manual page for more details.
2230 When upgrading from one major version to another it is generally best
2231 to upgrade to the latest code in the currently installed branch first,
2232 then do an upgrade to the new branch. This is the best-tested upgrade
2233 path, and has the highest probability of being successful. Please try
2234 this approach before reporting problems with a major version upgrade.
2236 When upgrading a live system, having a root shell around before
2237 installing anything can help undo problems. Not having a root shell
2238 around can lead to problems if pam has changed too much from your
2239 starting point to allow continued authentication after the upgrade.
2243 When upgrading the boot ZFS pool to a new version, always follow
2246 1.) recompile and reinstall the ZFS boot loader and boot block
2247 (this is part of "make buildworld" and "make installworld")
2249 2.) update the ZFS boot block on your boot drive
2251 The following example updates the ZFS boot block on the first
2252 partition (freebsd-boot) of a GPT partitioned drive ad0:
2253 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
2255 Non-boot pools do not need these updates.
2259 If you are updating from a prior version of FreeBSD (even one just
2260 a few days old), you should follow this procedure. It is the most
2261 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
2263 make kernel-toolchain
2264 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
2265 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
2267 To test a kernel once
2268 ---------------------
2269 If you just want to boot a kernel once (because you are not sure
2270 if it works, or if you want to boot a known bad kernel to provide
2271 debugging information) run
2272 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
2273 nextboot -k testkernel
2275 To just build a kernel when you know that it won't mess you up
2276 --------------------------------------------------------------
2277 This assumes you are already running a CURRENT system. Replace
2278 ${arch} with the architecture of your machine (e.g. "i386",
2279 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc).
2281 cd src/sys/${arch}/conf
2282 config KERNEL_NAME_HERE
2283 cd ../compile/KERNEL_NAME_HERE
2288 If this fails, go to the "To build a kernel" section.
2290 To rebuild everything and install it on the current system.
2291 -----------------------------------------------------------
2292 # Note: sometimes if you are running current you gotta do more than
2293 # is listed here if you are upgrading from a really old current.
2295 <make sure you have good level 0 dumps>
2297 make kernel KERNCONF=YOUR_KERNEL_HERE
2299 <reboot in single user> [3]
2306 To cross-install current onto a separate partition
2307 --------------------------------------------------
2308 # In this approach we use a separate partition to hold
2309 # current's root, 'usr', and 'var' directories. A partition
2310 # holding "/", "/usr" and "/var" should be about 2GB in
2313 <make sure you have good level 0 dumps>
2316 make buildkernel KERNCONF=YOUR_KERNEL_HERE
2317 <maybe newfs current's root partition>
2318 <mount current's root partition on directory ${CURRENT_ROOT}>
2319 make installworld DESTDIR=${CURRENT_ROOT}
2320 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
2321 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
2322 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
2323 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
2324 <reboot into current>
2325 <do a "native" rebuild/install as described in the previous section>
2326 <maybe install compatibility libraries from ports/misc/compat*>
2330 To upgrade in-place from stable to current
2331 ----------------------------------------------
2332 <make sure you have good level 0 dumps>
2334 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
2336 <reboot in single user> [3]
2343 Make sure that you've read the UPDATING file to understand the
2344 tweaks to various things you need. At this point in the life
2345 cycle of current, things change often and you are on your own
2346 to cope. The defaults can also change, so please read ALL of
2347 the UPDATING entries.
2349 Also, if you are tracking -current, you must be subscribed to
2350 freebsd-current@freebsd.org. Make sure that before you update
2351 your sources that you have read and understood all the recent
2352 messages there. If in doubt, please track -stable which has
2353 much fewer pitfalls.
2355 [1] If you have third party modules, such as vmware, you
2356 should disable them at this point so they don't crash your
2359 [3] From the bootblocks, boot -s, and then do
2364 adjkerntz -i # if CMOS is wall time
2365 Also, when doing a major release upgrade, it is required that
2366 you boot into single user mode to do the installworld.
2368 [4] Note: This step is non-optional. Failure to do this step
2369 can result in a significant reduction in the functionality of the
2370 system. Attempting to do it by hand is not recommended and those
2371 that pursue this avenue should read this file carefully, as well
2372 as the archives of freebsd-current and freebsd-hackers mailing lists
2373 for potential gotchas. The -U option is also useful to consider.
2374 See mergemaster(8) for more information.
2376 [5] Usually this step is a noop. However, from time to time
2377 you may need to do this if you get unknown user in the following
2378 step. It never hurts to do it all the time. You may need to
2379 install a new mergemaster (cd src/usr.sbin/mergemaster && make
2380 install) after the buildworld before this step if you last updated
2381 from current before 20130425 or from -stable before 20130430.
2383 [6] This only deletes old files and directories. Old libraries
2384 can be deleted by "make delete-old-libs", but you have to make
2385 sure that no program is using those libraries anymore.
2387 [8] In order to have a kernel that can run the 4.x binaries needed to
2388 do an installworld, you must include the COMPAT_FREEBSD4 option in
2389 your kernel. Failure to do so may leave you with a system that is
2390 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is
2391 required to run the 5.x binaries on more recent kernels. And so on
2392 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7.
2394 Make sure that you merge any new devices from GENERIC since the
2395 last time you updated your kernel config file.
2397 [9] When checking out sources, you must include the -P flag to have
2398 cvs prune empty directories.
2400 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
2401 "?=" instead of the "=" assignment operator, so that buildworld can
2402 override the CPUTYPE if it needs to.
2404 MAKEOBJDIRPREFIX must be defined in an environment variable, and
2405 not on the command line, or in /etc/make.conf. buildworld will
2406 warn if it is improperly defined.
2409 This file contains a list, in reverse chronological order, of major
2410 breakages in tracking -current. It is not guaranteed to be a complete
2411 list of such breakages, and only contains entries since October 10, 2007.
2412 If you need to see UPDATING entries from before that date, you will need
2413 to fetch an UPDATING file from an older FreeBSD release.
2415 Copyright information:
2417 Copyright 1998-2009 M. Warner Losh. All Rights Reserved.
2419 Redistribution, publication, translation and use, with or without
2420 modification, in full or in part, in any form or format of this
2421 document are permitted without further permission from the author.
2423 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
2424 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
2425 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
2426 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
2427 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
2428 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
2429 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2430 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
2431 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
2432 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
2433 POSSIBILITY OF SUCH DAMAGE.
2435 Contact Warner Losh if you have any questions about your use of