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 20160517 p17 FreeBSD-SA-16:18.atkbd
20 FreeBSD-SA-16:19.sendmsg
22 Fix buffer overflow in keyboard driver. [SA-16:18]
24 Fix incorrect argument handling in sendmsg(2). [SA-16:19]
26 20160504 p16 FreeBSD-SA-16:17.openssl
30 Fix multiple OpenSSL vulnerabilitites. [SA-16:17]
32 Fix excessive latency in x86 IPI delivery. [EN-16:07]
34 Fix memory leak in ZFS. [EN-16:08]
36 20160429 p15 FreeBSD-SA-16:16.ntp
38 Fix multiple vulnerabilities of ntp.
40 20160316 p14 FreeBSD-SA-16:14.openssh-xauth
41 FreeBSD-SA-16:15.sysarch
42 FreeBSD-EN-16:04.hyperv
43 FreeBSD-EN-16:05.hv_netvsc
45 Fix OpenSSH xauth(1) command injection. [SA-16:14]
46 Fix incorrect argument validation in sysarch(2). [SA-16:15]
47 Fix Hyper-V KVP (Key-Value Pair) daemon indefinite sleep. [EN-16:04]
48 Fix hv_netvsc(4) incorrect TCP/IP checksums. [EN-16:05]
50 20160303 p13 FreeBSD-SA-16:12.openssl
52 Fix multiple vulnerabilities of OpenSSL.
54 20160130 p12 FreeBSD-SA-16:11.openssl
56 Fix OpenSSL SSLv2 ciphersuite downgrade vulnerability. [SA-16:11]
58 20160127 p11 FreeBSD-SA-16:09.ntp
59 FreeBSD-SA-16:10.linux
61 Fix multiple vulnerabilities of ntp. [SA-16:09]
63 Fix Linux compatibility layer issetugid(2) system call
64 vulnerability. [SA-16:10]
66 20160114 p10 FreeBSD-SA-16:07.openssh
68 Fix OpenSSH client information leak. [SA-16:07]
70 20160114 p9 FreeBSD-EN-16:01.filemon
72 FreeBSD-EN-16:03.yplib
75 FreeBSD-SA-16:03.linux
76 FreeBSD-SA-16:04.linux
78 FreeBSD-SA-16:06.bsnmpd
80 Fix multiple stability and locking problems in filemon(4). [EN-16:01]
81 Fix pf(4) generating bad TCP checksums. [EN-16:02]
82 Fix infinite loop in YP/NIS client library. [EN-16:03]
83 Fix remote denial of service in SCTP. [SA-16:01]
84 Update NTP to 4.2.8p5. [SA-16:02]
85 Fix kernel memory diclosure in Linux compatibility layer. [SA-16:03]
86 Fix kernel memory overwrite in Linux compatibility layer. [SA-16:04]
87 Fix crash in TCP MD5 signatures. [SA-16:05]
88 Fix insecure default permissions for snmpd.config. [SA-16:06]
90 20151205 p8 FreeBSD-SA-15:26.openssl
92 Fix multiple OpenSSL vulnerabilities. [SA-15:26]
94 20151104 p7 FreeBSD-SA-15:25.ntp [revised]
95 FreeBSD-EN-15:19.kqueue
98 Fix regression in ntpd(8) lacking support for RAWDCF reference
99 clock in 10.2-RELEASE-p6. [SA-15:25]
101 Fix kqueue write events never fired for files greater 2GB. [EN-15:19]
103 Fix applications exiting due to segmentation violation on a correct
104 memory address. [EN-15:20.vm]
106 20151026: p6 FreeBSD-SA-15:25.ntp
108 Fix multiple NTP vulnerabilities. New NTP version is 4.2.8p4.
110 20151002: p5 FreeBSD-SA-15:24.rpcbind [revised]
111 Revised patch to address a regression that prevents NIS from working.
113 20150929: p4 FreeBSD-SA-15:24.rpcbind
115 Fix rpcbind(8) remote denial of service. [SA-15:24]
117 20150916: p3 FreeBSD-EN-15:16.pw
118 FreeBSD-EN-15:17.libc
121 Fix regression in pw(8) when creating numeric users or groups.
124 Fix libc handling of signals for multi-threaded processes.
127 Implement pubkey support for pkg(7) bootstrap. [EN-15:18]
129 20150825: p2 FreeBSD-SA-15:22.openssh
131 Fix OpenSSH multiple vulnerabilities. [SA-15:22]
133 Fix insufficient check of unsupported pkg(7) signature methods.
136 20150818: p1 FreeBSD-SA-15:20.expat
137 FreeBSD-EN-15:11.toolchain
138 FreeBSD-EN-15:12.netstat
139 FreeBSD-EN-15:13.vidcontrol
141 Fix multiple integer overflows in expat (libbsdxml) XML parser.
144 Fix make(1) syntax errors when upgrading from 9.x and earlier.
147 Fix incorrect netstat(1) data handling on 32-bit systems.
150 Allow size argument to vidcontrol(1) for syscons(4). [EN-15:13]
156 The default Unbound configuration now enables remote control
157 using a local socket. Users who have already enabled the
158 local_unbound service should regenerate their configuration
159 by running "service local_unbound setup" as root.
162 An additional fix for the issue described in the 20150614 sendmail
163 entry below has been been committed in revision 284786.
166 The fix for the issue described in the 20150614 sendmail entry
167 below has been been committed in revision 284485. The work
168 around described in that entry is no longer needed unless the
169 default setting is overridden by a confDH_PARAMETERS configuration
170 setting of '5' or pointing to a 512 bit DH parameter file.
173 The import of openssl to address the FreeBSD-SA-15:10.openssl
174 security advisory includes a change which rejects handshakes
175 with DH parameters below 768 bits. sendmail releases prior
176 to 8.15.2 (not yet released), defaulted to a 512 bit
177 DH parameter setting for client connections. To work around
178 this interoperability, sendmail can be configured to use a
179 2048 bit DH parameter by:
181 1. Edit /etc/mail/`hostname`.mc
182 2. If a setting for confDH_PARAMETERS does not exist or
183 exists and is set to a string beginning with '5',
185 3. If a setting for confDH_PARAMETERS exists and is set to
186 a file path, create a new file with:
187 openssl dhparam -out /path/to/file 2048
188 4. Rebuild the .cf file:
189 cd /etc/mail/; make; make install
191 cd /etc/mail/; make restart
193 A sendmail patch is coming, at which time this file will be
197 chmod, chflags, chown and chgrp now affect symlinks in -R mode as
198 defined in symlink(7); previously symlinks were silently ignored.
201 The const qualifier has been removed from iconv(3) to comply with
202 POSIX. The ports tree is aware of this from r384038 onwards.
205 At svn r275807, The default linux compat kernel ABI has been adjusted
206 to 2.6.18 in support of the linux-c6 compat ports infrastructure
207 update. If you wish to continue using the linux-f10 compat ports,
208 add compat.linux.osrelease=2.6.16 to your local sysctl.conf. Users are
209 encouraged to update their linux-compat packages to linux-c6 during
210 their next update cycle.
212 See ports/UPDATING 20141209 and 20141215 on migration to CentOS 6 ports.
215 pjdfstest has been integrated into kyua as an opt-in test suite.
216 Please see share/doc/pjdfstest/README for a more details on how to
223 The ofwfb driver, used to provide a graphics console on PowerPC when
224 using vt(4), no longer allows mmap() of all of physical memory. This
225 will prevent Xorg on PowerPC with some ATI graphics cards from
226 initializing properly unless x11-servers/xorg-server is updated to
230 The libatf-c and libatf-c++ major versions were downgraded to 0 and
231 1 respectively to match the upstream numbers. They were out of
232 sync because, when they were originally added to FreeBSD, the
233 upstream versions were not respected. These libraries are private
234 and not yet built by default, so renumbering them should be a
235 non-issue. However, unclean source trees will yield broken test
236 programs once the operator executes "make delete-old-libs" after a
239 Additionally, the atf-sh binary was made private by moving it into
240 /usr/libexec/. Already-built shell test programs will keep the
241 path to the old binary so they will break after "make delete-old"
244 If you are using WITH_TESTS=yes (not the default), wipe the object
245 tree and rebuild from scratch to prevent spurious test failures.
246 This is only needed once: the misnumbered libraries and misplaced
247 binaries have been added to OptionalObsoleteFiles.inc so they will
248 be removed during a clean upgrade.
251 The ixgbe tunables now match their sysctl counterparts, for example:
252 hw.ixgbe.enable_aim => hw.ix.enable_aim
253 Anyone using ixgbe tunables should ensure they update /boot/loader.conf.
256 The NFSv4.1 server committed by r269398 changes the internal
257 function call interfaces used between the NFS and krpc modules.
258 As such, __FreeBSD_version was bumped.
261 The default unbound configuration has been modified to address
262 issues with reverse lookups on networks that use private
263 address ranges. If you use the local_unbound service, run
264 "service local_unbound setup" as root to regenerate your
265 configuration, then "service local_unbound reload" to load the
269 It is no longer necessary to include the dwarf version in your DEBUG
270 options in your kernel config file. The bug that required it to be
271 placed in the config file has bene fixed. DEBUG should now just
272 contain -g. The build system will automatically update things
273 to do the right thing.
276 Several ABI breaking changes were merged to CTL and new iSCSI code.
277 All CTL and iSCSI-related tools, such as ctladm, ctld, iscsid and
278 iscsictl need to be rebuilt to work with a new kernel.
281 The WITHOUT_VT_SUPPORT kernel config knob has been renamed
282 WITHOUT_VT. (The other _SUPPORT knobs have a consistent meaning
283 which differs from the behaviour controlled by this knob.)
286 On i386 and amd64 systems, the onifconsole flag is now set by default
287 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled
288 as a login TTY if it is set in the bootloader as an active kernel
289 console. No changes in behavior should result otherwise. To revert to
290 the previous behavior, set ttyu0 to "off" in /etc/ttys.
293 Clang and llvm have been upgraded to 3.4.1 release.
296 Clang and llvm have been upgraded to 3.4 release.
299 If a Makefile in a tests/ directory was auto-generating a Kyuafile
300 instead of providing an explicit one, this would prevent such
301 Makefile from providing its own Kyuafile in the future during
302 NO_CLEAN builds. This has been fixed in the Makefiles but manual
303 intervention is needed to clean an objdir if you use NO_CLEAN:
304 # find /usr/obj -name Kyuafile | xargs rm -f
307 OpenSSH will now ignore errors caused by kernel lacking of Capsicum
308 capability mode support. Please note that enabling the feature in
309 kernel is still highly recommended.
312 OpenSSH is now built with sandbox support, and will use sandbox as
313 the default privilege separation method. This requires Capsicum
314 capability mode support in kernel.
317 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has
318 been deprecated and will not be part of FreeBSD 11.0 and later
319 releases. If you use this driver, please consider switching to
320 the nfe(4) driver instead.
326 The behavior of gss_pseudo_random() for the krb5 mechanism
327 has changed, for applications requesting a longer random string
328 than produced by the underlying enctype's pseudo-random() function.
329 In particular, the random string produced from a session key of
330 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will
331 be different at the 17th octet and later, after this change.
332 The counter used in the PRF+ construction is now encoded as a
333 big-endian integer in accordance with RFC 4402.
334 __FreeBSD_version is bumped to 1000701.
337 The WITHOUT_ATF build knob has been removed and its functionality
338 has been subsumed into the more generic WITHOUT_TESTS. If you were
339 using the former to disable the build of the ATF libraries, you
340 should change your settings to use the latter.
343 The default version of mtree is nmtree which is obtained from
344 NetBSD. The output is generally the same, but may vary
345 slightly. If you found you need identical output adding
346 "-F freebsd9" to the command line should do the trick. For the
347 time being, the old mtree is available as fmtree.
350 libbsdyml has been renamed to libyaml and moved to /usr/lib/private.
351 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg
352 1.1.4_8 and verify bsdyml not linked in, before running "make
354 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean
356 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml
359 The rc.d/jail script has been updated to support jail(8)
360 configuration file. The "jail_<jname>_*" rc.conf(5) variables
361 for per-jail configuration are automatically converted to
362 /var/run/jail.<jname>.conf before the jail(8) utility is invoked.
363 This is transparently backward compatible. See below about some
364 incompatibilities and rc.conf(5) manual page for more details.
366 These variables are now deprecated in favor of jail(8) configuration
367 file. One can use "rc.d/jail config <jname>" command to generate
368 a jail(8) configuration file in /var/run/jail.<jname>.conf without
369 running the jail(8) utility. The default pathname of the
370 configuration file is /etc/jail.conf and can be specified by
371 using $jail_conf or $jail_<jname>_conf variables.
373 Please note that jail_devfs_ruleset accepts an integer at
374 this moment. Please consider to rewrite the ruleset name
378 BIND has been removed from the base system. If all you need
379 is a local resolver, simply enable and start the local_unbound
380 service instead. Otherwise, several versions of BIND are
381 available in the ports tree. The dns/bind99 port is one example.
383 With this change, nslookup(1) and dig(1) are no longer in the base
384 system. Users should instead use host(1) and drill(1) which are
385 in the base system. Alternatively, nslookup and dig can
386 be obtained by installing the dns/bind-tools port.
389 With the addition of unbound(8), a new unbound user is now
390 required during installworld. "mergemaster -p" can be used to
391 add the user prior to installworld, as documented in the handbook.
394 OpenSSH is now built with DNSSEC support, and will by default
395 silently trust signed SSHFP records. This can be controlled with
396 the VerifyHostKeyDNS client configuration setting. DNSSEC support
397 can be disabled entirely with the WITHOUT_LDNS option in src.conf.
400 The GNU Compiler Collection and C++ standard library (libstdc++)
401 are no longer built by default on platforms where clang is the system
402 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX
406 The PROCDESC kernel option is now part of the GENERIC kernel
407 configuration and is required for the rwhod(8) to work.
408 If you are using custom kernel configuration, you should include
412 The API and ABI related to the Capsicum framework was modified
413 in backward incompatible way. The userland libraries and programs
414 have to be recompiled to work with the new kernel. This includes the
415 following libraries and programs, but the whole buildworld is
416 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl,
417 kdump, procstat, rwho, rwhod, uniq.
420 AES-NI intrinsic support has been added to gcc. The AES-NI module
421 has been updated to use this support. A new gcc is required to build
422 the aesni module on both i386 and amd64.
425 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices.
426 Thus "device padlock_rng" and "device rdrand_rng" should be
427 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG".
430 WITH_ICONV has been split into two feature sets. WITH_ICONV now
431 enables just the iconv* functionality and is now on by default.
432 WITH_LIBICONV_COMPAT enables the libiconv api and link time
433 compatability. Set WITHOUT_ICONV to build the old way.
434 If you have been using WITH_ICONV before, you will very likely
435 need to turn on WITH_LIBICONV_COMPAT.
438 INVARIANTS option now enables DEBUG for code with OpenSolaris and
439 Illumos origin, including ZFS. If you have INVARIANTS in your
440 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG
442 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS)
443 locks if WITNESS option was set. Because that generated a lot of
444 witness(9) reports and all of them were believed to be false
445 positives, this is no longer done. New option OPENSOLARIS_WITNESS
446 can be used to achieve the previous behavior.
449 Timer values in IPv6 data structures now use time_uptime instead
450 of time_second. Although this is not a user-visible functional
451 change, userland utilities which directly use them---ndp(8),
452 rtadvd(8), and rtsold(8) in the base system---need to be updated
456 find -delete can now delete the pathnames given as arguments,
457 instead of only files found below them or if the pathname did
458 not contain any slashes. Formerly, the following error message
461 find: -delete: <path>: relative path potentially not safe
463 Deleting the pathnames given as arguments can be prevented
464 without error messages using -mindepth 1 or by changing
465 directory and passing "." as argument to find. This works in the
466 old as well as the new version of find.
469 Behavior of devfs rules path matching has been changed.
470 Pattern is now always matched against fully qualified devfs
471 path and slash characters must be explicitly matched by
472 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs
473 subdirectories must be reviewed.
476 The default ARM ABI has changed to the ARM EABI. The old ABI is
477 incompatible with the ARM EABI and all programs and modules will
478 need to be rebuilt to work with a new kernel.
480 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set.
482 NOTE: Support for the old ABI will be removed in the future and
483 users are advised to upgrade.
486 pkg_install has been disconnected from the build if you really need it
487 you should add WITH_PKGTOOLS in your src.conf(5).
490 Most of network statistics structures were changed to be able
491 keep 64-bits counters. Thus all tools, that work with networking
492 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.)
495 Fix targets that run multiple make's to use && rather than ;
496 so that subsequent steps depend on success of previous.
498 NOTE: if building 'universe' with -j* on stable/8 or stable/9
499 it would be better to start the build using bmake, to avoid
500 overloading the machine.
503 Fix a bug that allowed a tracing process (e.g. gdb) to write
504 to a memory-mapped file in the traced process's address space
505 even if neither the traced process nor the tracing process had
506 write access to that file.
509 CVS has been removed from the base system. An exact copy
510 of the code is available from the devel/cvs port.
513 Some people report the following error after the switch to bmake:
515 make: illegal option -- J
516 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable]
518 *** [buildworld] Error code 2
520 this likely due to an old instance of make in
521 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE})
522 which src/Makefile will use that blindly, if it exists, so if
523 you see the above error:
525 rm -rf `make -V MAKEPATH`
530 Use bmake by default.
531 Whereas before one could choose to build with bmake via
532 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old
533 make. The goal is to remove these knobs for 10-RELEASE.
535 It is worth noting that bmake (like gmake) treats the command
536 line as the unit of failure, rather than statements within the
537 command line. Thus '(cd some/where && dosomething)' is safer
538 than 'cd some/where; dosomething'. The '()' allows consistent
539 behavior in parallel build.
542 Fix a bug that allows NFS clients to issue READDIR on files.
545 The WITHOUT_IDEA option has been removed because
546 the IDEA patent expired.
549 The sysctl which controls TRIM support under ZFS has been renamed
550 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been
554 The mergemaster command now uses the default MAKEOBJDIRPREFIX
555 rather than creating it's own in the temporary directory in
556 order allow access to bootstrapped versions of tools such as
557 install and mtree. When upgrading from version of FreeBSD where
558 the install command does not support -l, you will need to
559 install a new mergemaster command if mergemaster -p is required.
560 This can be accomplished with the command (cd src/usr.sbin/mergemaster
564 Legacy ATA stack, disabled and replaced by new CAM-based one since
565 FreeBSD 9.0, completely removed from the sources. Kernel modules
566 atadisk and atapi*, user-level tools atacontrol and burncd are
567 removed. Kernel option `options ATA_CAM` is now permanently enabled
571 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2)
572 and socketpair(2). Software, in particular Kerberos, may
573 automatically detect and use these during building. The resulting
574 binaries will not work on older kernels.
577 CTL_DISABLE has also been added to the sparc64 GENERIC (for further
578 information, see the respective 20130304 entry).
581 Recent commits to callout(9) changed the size of struct callout,
582 so the KBI is probably heavily disturbed. Also, some functions
583 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced
584 by macros. Every kernel module using it won't load, so rebuild
587 The ctl device has been re-enabled in GENERIC for i386 and amd64,
588 but does not initialize by default (because of the new CTL_DISABLE
589 option) to save memory. To re-enable it, remove the CTL_DISABLE
590 option from the kernel config file or set kern.cam.ctl.disable=0
591 in /boot/loader.conf.
594 The ctl device has been disabled in GENERIC for i386 and amd64.
595 This was done due to the extra memory being allocated at system
596 initialisation time by the ctl driver which was only used if
597 a CAM target device was created. This makes a FreeBSD system
598 unusable on 128MB or less of RAM.
601 A new compression method (lz4) has been merged to -HEAD. Please
602 refer to zpool-features(7) for more information.
604 Please refer to the "ZFS notes" section of this file for information
605 on upgrading boot ZFS pools.
608 A BSD-licensed patch(1) variant has been added and is installed
609 as bsdpatch, being the GNU version the default patch.
610 To inverse the logic and use the BSD-licensed one as default,
611 while having the GNU version installed as gnupatch, rebuild
612 and install world with the WITH_BSD_PATCH knob set.
615 Due to the use of the new -l option to install(1) during build
616 and install, you must take care not to directly set the INSTALL
617 make variable in your /etc/make.conf, /etc/src.conf, or on the
618 command line. If you wish to use the -C flag for all installs
619 you may be able to add INSTALL+=-C to /etc/make.conf or
623 The install(1) option -M has changed meaning and now takes an
624 argument that is a file or path to append logs to. In the
625 unlikely event that -M was the last option on the command line
626 and the command line contained at least two files and a target
627 directory the first file will have logs appended to it. The -M
628 option served little practical purpose in the last decade so its
629 use is expected to be extremely rare.
632 After switching to Clang as the default compiler some users of ZFS
633 on i386 systems started to experience stack overflow kernel panics.
634 Please consider using 'options KSTACK_PAGES=4' in such configurations.
637 GEOM_LABEL now mangles label names read from file system metadata.
638 Mangling affect labels containing spaces, non-printable characters,
639 '%' or '"'. Device names in /etc/fstab and other places may need to
643 By default, only the 10 most recent kernel dumps will be saved. To
644 restore the previous behaviour (no limit on the number of kernel dumps
645 stored in the dump directory) add the following line to /etc/rc.conf:
650 With the addition of auditdistd(8), a new auditdistd user is now
651 required during installworld. "mergemaster -p" can be used to
652 add the user prior to installworld, as documented in the handbook.
655 The sin6_scope_id member variable in struct sockaddr_in6 is now
656 filled by the kernel before passing the structure to the userland via
657 sysctl or routing socket. This means the KAME-specific embedded scope
658 id in sin6_addr.s6_addr[2] is always cleared in userland application.
659 This behavior can be controlled by net.inet6.ip6.deembed_scopeid.
660 __FreeBSD_version is bumped to 1000025.
663 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default.
664 This means that the world and kernel will be compiled with clang
665 and that clang will be installed as /usr/bin/cc, /usr/bin/c++,
666 and /usr/bin/cpp. To disable this behavior and revert to building
667 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions
668 of current may need to bootstrap WITHOUT_CLANG first if the clang
669 build fails (its compatibility window doesn't extend to the 9 stable
673 The IPFIREWALL_FORWARD kernel option has been removed. Its
674 functionality now turned on by default.
677 The ZERO_COPY_SOCKET kernel option has been removed and
678 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP.
679 NB: SOCKET_SEND_COW uses the VM page based copy-on-write
680 mechanism which is not safe and may result in kernel crashes.
681 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current
682 driver supports disposeable external page sized mbuf storage.
683 Proper replacements for both zero-copy mechanisms are under
684 consideration and will eventually lead to complete removal
685 of the two kernel options.
688 The IPv4 network stack has been converted to network byte
689 order. The following modules need to be recompiled together
690 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4),
691 pf(4), ipfw(4), ng_ipfw(4), stf(4).
694 Support for non-MPSAFE filesystems was removed from VFS. The
695 VFS_VERSION was bumped, all filesystem modules shall be
699 All the non-MPSAFE filesystems have been disconnected from
700 the build. The full list includes: codafs, hpfs, ntfs, nwfs,
701 portalfs, smbfs, xfs.
704 The interface cloning API and ABI has changed. The following
705 modules need to be recompiled together with kernel:
706 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4),
707 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4),
708 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4).
711 The sdhci driver was split in two parts: sdhci (generic SD Host
712 Controller logic) and sdhci_pci (actual hardware driver).
713 No kernel config modifications are required, but if you
714 load sdhc as a module you must switch to sdhci_pci instead.
717 Import the FUSE kernel and userland support into base system.
720 The GNU sort(1) program has been removed since the BSD-licensed
721 sort(1) has been the default for quite some time and no serious
722 problems have been reported. The corresponding WITH_GNU_SORT
726 The pfil(9) API/ABI for AF_INET family has been changed. Packet
727 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled
731 The net80211(4) ABI has been changed to allow for improved driver
732 PS-POLL and power-save support. All wireless drivers need to be
733 recompiled to work with the new kernel.
736 The random(4) support for the VIA hardware random number
737 generator (`PADLOCK') is no longer enabled unconditionally.
738 Add the padlock_rng device in the custom kernel config if
739 needed. The GENERIC kernels on i386 and amd64 do include the
740 device, so the change only affects the custom kernel
744 The pf(4) packet filter ABI has been changed. pfctl(8) and
745 snmp_pf module need to be recompiled to work with new kernel.
748 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged
749 to -HEAD. Pools that have empty_bpobj in active state can not be
750 imported read-write with ZFS implementations that do not support
751 this feature. For more information read the zpool-features(5)
755 The sparc64 ZFS loader has been changed to no longer try to auto-
756 detect ZFS providers based on diskN aliases but now requires these
757 to be explicitly listed in the OFW boot-device environment variable.
760 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring
761 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are
762 configuration changes. Make sure to merge /etc/ssl/openssl.cnf.
765 The following sysctls and tunables have been renamed for consistency
766 with other variables:
767 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered
768 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered
771 The sort utility has been replaced with BSD sort. For now, GNU sort
772 is also available as "gnusort" or the default can be set back to
773 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be
774 installed as "bsdsort".
777 A new version of ZFS (pool version 5000) has been merged to -HEAD.
778 Starting with this version the old system of ZFS pool versioning
779 is superseded by "feature flags". This concept enables forward
780 compatibility against certain future changes in functionality of ZFS
781 pools. The first read-only compatible "feature flag" for ZFS pools
782 is named "com.delphix:async_destroy". For more information
783 read the new zpool-features(5) manual page.
784 Please refer to the "ZFS notes" section of this file for information
785 on upgrading boot ZFS pools.
788 The malloc(3) implementation embedded in libc now uses sources imported
789 as contrib/jemalloc. The most disruptive API change is to
790 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf,
791 delete it prior to installworld, and optionally re-create it using the
792 new format after rebooting. See malloc.conf(5) for details
793 (specifically the TUNING section and the "opt.*" entries in the MALLCTL
797 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb
798 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is
799 now spelled mips. This is to aid compatibility with third-party
800 software that expects this naming scheme in uname(3). Little-endian
801 settings are unchanged. If you are updating a big-endian mips64 machine
802 from before this change, you may need to set MACHINE_ARCH=mips64 in
803 your environment before the new build system will recognize your machine.
806 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported
810 Now unix domain sockets behave "as expected" on nullfs(5). Previously
811 nullfs(5) did not pass through all behaviours to the underlying layer,
812 as a result if we bound to a socket on the lower layer we could connect
813 only to the lower path; if we bound to the upper layer we could connect
814 only to the upper path. The new behavior is one can connect to both the
815 lower and the upper paths regardless what layer path one binds to.
818 The getifaddrs upgrade path broken with 20111215 has been restored.
819 If you have upgraded in between 20111215 and 20120209 you need to
820 recompile libc again with your kernel. You still need to recompile
821 world to be able to configure CARP but this restriction already
825 The set_rcvar() function has been removed from /etc/rc.subr. All
826 base and ports rc.d scripts have been updated, so if you have a
827 port installed with a script in /usr/local/etc/rc.d you can either
828 hand-edit the rcvar= line, or reinstall the port.
830 An easy way to handle the mass-update of /etc/rc.d:
831 rm /etc/rc.d/* && mergemaster -i
834 panic(9) now stops other CPUs in the SMP systems, disables interrupts
835 on the current CPU and prevents other threads from running.
836 This behavior can be reverted using the kern.stop_scheduler_on_panic
838 The new behavior can be incompatible with kern.sync_on_panic.
841 The carp(4) facility has been changed significantly. Configuration
842 of the CARP protocol via ifconfig(8) has changed, as well as format
843 of CARP events submitted to devd(8) has changed. See manual pages
844 for more information. The arpbalance feature of carp(4) is currently
845 not supported anymore.
847 Size of struct in_aliasreq, struct in6_aliasreq has changed. User
848 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8),
849 need to be recompiled.
852 The acpi_wmi(4) status device /dev/wmistat has been renamed to
856 The option VFS_ALLOW_NONMPSAFE option has been added in order to
857 explicitely support non-MPSAFE filesystems.
858 It is on by default for all supported platform at this present
862 The broken amd(4) driver has been replaced with esp(4) in the amd64,
863 i386 and pc98 GENERIC kernel configuration files.
866 sysinstall has been removed
869 The stable/9 branch created in subversion. This corresponds to the
870 RELENG_9 branch in CVS.
873 This commit modifies vfs_register() so that it uses a hash
874 calculation to set vfc_typenum, which is enabled by default.
875 The first time a system is booted after this change, the
876 vfc_typenum values will change for all file systems. The
877 main effect of this is a change to the NFS server file handles
878 for file systems that use vfc_typenum in their fsid, such as ZFS.
879 It will, however, prevent vfc_typenum from changing when file
880 systems are loaded in a different order for subsequent reboots.
881 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf
882 until you are ready to remount all NFS clients after a reboot.
885 Bump the shared library version numbers for libraries that
886 do not use symbol versioning, have changed the ABI compared
887 to stable/8 and which shared library version was not bumped.
888 Done as part of 9.0-RELEASE cycle.
891 During the merge of Capsicum features, the fget(9) KPI was modified.
892 This may require the rebuilding of out-of-tree device drivers --
893 issues have been reported specifically with the nVidia device driver.
894 __FreeBSD_version is bumped to 900041.
896 Also, there is a period between 20110811 and 20110814 where the
897 special devices /dev/{stdin,stdout,stderr} did not work correctly.
898 Building world from a kernel during that window may not work.
901 The packet filter (pf) code has been updated to OpenBSD 4.5.
902 You need to update userland tools to be in sync with kernel.
903 This update breaks backward compatibility with earlier pfsync(4)
904 versions. Care must be taken when updating redundant firewall setups.
907 The following sysctls and tunables are retired on x86 platforms:
909 machdep.hlt_logical_cpus
910 The following sysctl is retired:
911 machdep.hyperthreading_allowed
912 The sysctls were supposed to provide a way to dynamically offline and
913 online selected CPUs on x86 platforms, but the implementation has not
914 been reliable especially with SCHED_ULE scheduler.
915 machdep.hyperthreading_allowed tunable is still available to ignore
916 hyperthreading CPUs at OS level.
917 Individual CPUs can be disabled using hint.lapic.X.disabled tunable,
918 where X is an APIC ID of a CPU. Be advised, though, that disabling
919 CPUs in non-uniform fashion will result in non-uniform topology and
920 may lead to sub-optimal system performance with SCHED_ULE, which is
924 cpumask_t type is retired and cpuset_t is used in order to describe
928 Changes to ifconfig(8) for dynamic address family detection mandate
929 that you are running a kernel of 20110525 or later. Make sure to
930 follow the update procedure to boot a new kernel before installing
934 Support for sun4v architecture is officially dropped
937 Several KPI breaking changes have been committed to the mii(4) layer,
938 the PHY drivers and consequently some Ethernet drivers using mii(4).
939 This means that miibus.ko and the modules of the affected Ethernet
940 drivers need to be recompiled.
942 Note to kernel developers: Given that the OUI bit reversion problem
943 was fixed as part of these changes all mii(4) commits related to OUIs,
944 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific
945 handling, no longer can be merged verbatim to stable/8 and previous
949 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci'
950 into their kernel configurations along with 'device pci'.
953 The default NFS client is now the new NFS client, so fstype "newnfs"
954 is now "nfs" and the regular/old NFS client is now fstype "oldnfs".
955 Although mounts via fstype "nfs" will usually work without userland
956 changes, it is recommended that the mount(8) and mount_nfs(8)
957 commands be rebuilt from sources and that a link to mount_nfs called
958 mount_oldnfs be created. The new client is compiled into the
959 kernel with "options NFSCL" and this is needed for diskless root
960 file systems. The GENERIC kernel configs have been changed to use
961 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER.
962 To use the regular/old client, you can "mount -t oldnfs ...". For
963 a diskless root file system, you must also include a line like:
965 vfs.root.mountfrom="oldnfs:"
967 in the boot/loader.conf on the root fs on the NFS server to make
968 a diskless root fs use the old client.
971 The GENERIC kernels for all architectures now default to the new
972 CAM-based ATA stack. It means that all legacy ATA drivers were
973 removed and replaced by respective CAM drivers. If you are using
974 ATA device names in /etc/fstab or other places, make sure to update
975 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY,
976 where 'Y's are the sequential numbers starting from zero for each type
977 in order of detection, unless configured otherwise with tunables,
978 see cam(4)). There will be symbolic links created in /dev/ to map
979 old adX devices to the respective adaY. They should provide basic
980 compatibility for file systems mounting in most cases, but they do
981 not support old user-level APIs and do not have respective providers
982 in GEOM. Consider using updated management tools with new device names.
984 It is possible to load devices ahci, ata, siis and mvs as modules,
985 but option ATA_CAM should remain in kernel configuration to make ata
986 module work as CAM driver supporting legacy ATA controllers. Device ata
987 still can be used in modular fashion (atacore + ...). Modules atadisk
988 and atapi* are not used and won't affect operation in ATA_CAM mode.
989 Note that to use CAM-based ATA kernel should include CAM devices
990 scbus, pass, da (or explicitly ada), cd and optionally others. All of
991 them are parts of the cam module.
993 ataraid(4) functionality is now supported by the RAID GEOM class.
994 To use it you can load geom_raid kernel module and use graid(8) tool
995 for management. Instead of /dev/arX device names, use /dev/raid/rX.
997 No kernel config options or code have been removed, so if a problem
998 arises, please report it and optionally revert to the old ATA stack.
999 In order to do it you can remove from the kernel config:
1004 , and instead add back:
1005 device atadisk # ATA disk drives
1006 device ataraid # ATA RAID drives
1007 device atapicd # ATAPI CDROM drives
1008 device atapifd # ATAPI floppy drives
1009 device atapist # ATAPI tape drives
1012 The default NFS server has been changed to the new server, which
1013 was referred to as the experimental server. If you need to switch
1014 back to the old NFS server, you must now put the "-o" option on
1015 both the mountd and nfsd commands. This can be done using the
1016 mountd_flags and nfs_server_flags rc.conf variables until an
1017 update to the rc scripts is committed, which is coming soon.
1020 The GNU Objective-C runtime library (libobjc), and other Objective-C
1021 related components have been removed from the base system. If you
1022 require an Objective-C library, please use one of the available ports.
1025 ath(4) has been split into bus- and device- modules. if_ath contains
1026 the HAL, the TX rate control and the network device code. if_ath_pci
1027 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb
1028 contains the AHB glue. Users need to load both if_ath_pci and if_ath
1029 in order to use ath on everything else.
1031 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only
1032 need to load if_ath and if_ath_pci for ath(4) operation.
1035 As part of the replacement of sysinstall, the process of building
1036 release media has changed significantly. For details, please re-read
1037 release(7), which has been updated to reflect the new build process.
1040 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This
1041 is the last available version under GPLv2. It brings a number of new
1042 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE
1043 4.1 and SSE 4.2), better support for powerpc64, a number of new
1044 directives, and lots of other small improvements. See the ChangeLog
1045 file in contrib/binutils for the full details.
1048 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868
1049 compliant, and will now use half of hash for authentication.
1050 This will break interoperability with all stacks (including all
1051 actual FreeBSD versions) who implement
1052 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for
1054 The only workaround with such peers is to use another HMAC
1055 algorithm for IPsec ("phase 2") authentication.
1058 Remove the uio_yield prototype and symbol. This function has
1059 been misnamed since it was introduced and should not be
1060 globally exposed with this name. The equivalent functionality
1061 is now available using kern_yield(curthread->td_user_pri).
1062 The function remains undocumented.
1065 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers,
1066 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking
1067 for scalar sysctls is defined but disabled. Code that needs
1068 UQUAD to pass the type checking that must compile on older
1069 systems where the define is not present can check against
1070 __FreeBSD_version >= 900030.
1072 The system dialog(1) has been replaced with a new version previously
1073 in ports as devel/cdialog. dialog(1) is mostly command-line compatible
1074 with the previous version, but the libdialog associated with it has
1075 a largely incompatible API. As such, the original version of libdialog
1076 will be kept temporarily as libodialog, until its base system consumers
1077 are replaced or updated. Bump __FreeBSD_version to 900030.
1080 If you are trying to run make universe on a -stable system, and you get
1081 the following warning:
1082 "Makefile", line 356: "Target architecture for i386/conf/GENERIC
1083 unknown. config(8) likely too old."
1084 or something similar to it, then you must upgrade your -stable system
1085 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in
1086 stable/8) or build the config from the latest stable/8 branch and
1087 install it on your system.
1089 Prior to this date, building a current universe on 8-stable system from
1090 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing
1091 error in the first kernel build phase. A new config on those old
1092 systems will fix that problem for older versions of -current.
1095 The TCP stack has been modified to allow Khelp modules to interact with
1096 it via helper hook points and store per-connection data in the TCP
1097 control block. Bump __FreeBSD_version to 900029. User space tools that
1098 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to
1102 Generic IEEE 802.3 annex 31B full duplex flow control support has been
1103 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along
1104 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted
1105 to take advantage of it instead of using custom implementations. This
1106 means that these drivers now no longer unconditionally advertise
1107 support for flow control but only do so if flow control is a selected
1108 media option. This was implemented in the generic support that way in
1109 order to allow flow control to be switched on and off via ifconfig(8)
1110 with the PHY specific default to typically off in order to protect
1111 from unwanted effects. Consequently, if you used flow control with
1112 one of the above mentioned drivers you now need to explicitly enable
1113 it, for example via:
1114 ifconfig bge0 media auto mediaopt flowcontrol
1116 Along with the above mentioned changes generic support for setting
1117 1000baseT master mode also has been added and brgphy(4), ciphy(4),
1118 e1000phy(4) as well as ip1000phy(4) have been converted to take
1119 advantage of it. This means that these drivers now no longer take the
1120 link0 parameter for selecting master mode but the master media option
1121 has to be used instead, for example like in the following:
1122 ifconfig bge0 media 1000baseT mediaopt full-duplex,master
1124 Selection of master mode now is also available with all other PHY
1125 drivers supporting 1000baseT.
1128 The TCP stack has received a significant update to add support for
1129 modularised congestion control and generally improve the clarity of
1130 congestion control decisions. Bump __FreeBSD_version to 900025. User
1131 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g.
1132 sockstat) need to be recompiled.
1135 The man(1) utility has been replaced by a new version that no longer
1136 uses /etc/manpath.config. Please consult man.conf(5) for how to
1137 migrate local entries to the new format.
1140 The copyright strings printed by login(1) and sshd(8) at the time of a
1141 new connection have been removed to follow other operating systems and
1145 A workaround for a fixed ld bug has been removed in kernel code,
1146 so make sure that your system ld is built from sources after
1147 revision 210245 from 2010-07-19 (r211583 if building head kernel
1148 on stable/8, r211584 for stable/7; both from 2010-08-21).
1149 A symptom of incorrect ld version is different addresses for
1150 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules.
1153 The $ipv6_prefer variable in rc.conf(5) has been split into
1154 $ip6addrctl_policy and $ipv6_activate_all_interfaces.
1156 The $ip6addrctl_policy is a variable to choose a pre-defined
1157 address selection policy set by ip6addrctl(8). A value
1158 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The
1161 The $ipv6_activate_all_interfaces specifies whether IFDISABLED
1162 flag (see an entry of 20090926) is set on an interface with no
1163 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for
1164 security reason. If you want IPv6 link-local address on all
1165 interfaces by default, set this to "YES".
1167 The old ipv6_prefer="YES" is equivalent to
1168 ipv6_activate_all_interfaces="YES" and
1169 ip6addrctl_policy="ipv6_prefer".
1172 DTrace has grown support for userland tracing. Due to this, DTrace is
1173 now i386 and amd64 only.
1174 dtruss(1) is now installed by default on those systems and a new
1175 kernel module is needed for userland tracing: fasttrap.
1176 No changes to your kernel config file are necessary to enable
1177 userland tracing, but you might consider adding 'STRIP=' and
1178 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want
1179 to have informative userland stack traces in DTrace (ustack).
1182 The acpi_aiboost(4) driver has been removed in favor of the new
1183 aibs(4) driver. You should update your kernel configuration file.
1186 BSD grep has been imported to the base system and it is built by
1187 default. It is completely BSD licensed, highly GNU-compatible, uses
1188 less memory than its GNU counterpart and has a small codebase.
1189 However, it is slower than its GNU counterpart, which is mostly
1190 noticeable for larger searches, for smaller ones it is measurable
1191 but not significant. The reason is complex, the most important factor
1192 is that we lack a modern and efficient regex library and GNU
1193 overcomes this by optimizing the searches internally. Future work
1194 on improving the regex performance is planned, for the meantime,
1195 users that need better performance, can build GNU grep instead by
1196 setting the WITH_GNU_GREP knob.
1199 Due to the import of powerpc64 support, all existing powerpc kernel
1200 configuration files must be updated with a machine directive like this:
1201 machine powerpc powerpc
1203 In addition, an updated config(8) is required to build powerpc kernels
1207 A new version of ZFS (version 15) has been merged to -HEAD.
1208 This version uses a python library for the following subcommands:
1209 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
1210 For full functionality of these commands the following port must
1211 be installed: sysutils/py-zfs
1214 'vm_page's are now hashed by physical address to an array of mutexes.
1215 Currently this is only used to serialize access to hold_count. Over
1216 time the page queue mutex will be peeled away. This changes the size
1217 of pmap on every architecture. And requires all callers of vm_page_hold
1218 and vm_page_unhold to be updated.
1221 WITH_CTF can now be specified in src.conf (not recommended, there
1222 are some problems with static executables), make.conf (would also
1223 affect ports which do not use GNU make and do not override the
1224 compile targets) or in the kernel config (via "makeoptions
1226 When WITH_CTF was specified there before this was silently ignored,
1227 so make sure that WITH_CTF is not used in places which could lead
1228 to unwanted behavior.
1231 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
1232 to allow 32-bit compatibility on non-x86 platforms. All kernel
1233 configurations on amd64 and ia64 platforms using these options must
1234 be modified accordingly.
1237 The utmp user accounting database has been replaced with utmpx,
1238 the user accounting interface standardized by POSIX.
1239 Unfortunately the semantics of utmp and utmpx don't match,
1240 making it practically impossible to support both interfaces.
1241 The user accounting database is used by tools like finger(1),
1242 last(1), talk(1), w(1) and ac(8).
1244 All applications in the base system use utmpx. This means only
1245 local binaries (e.g. from the ports tree) may still use these
1246 utmp database files. These applications must be rebuilt to make
1249 After the system has been upgraded, it is safe to remove the old
1250 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*),
1251 assuming their contents is of no importance anymore. Old wtmp
1252 databases can only be used by last(1) and ac(8) after they have
1253 been converted to the new format using wtmpcvt(1).
1256 Introduce the kernel thread "deadlock resolver" (which can be enabled
1257 via the DEADLKRES option, see NOTES for more details) and the
1258 sleepq_type() function for sleepqueues.
1261 The rc.firewall and rc.firewall6 were unified, and
1262 rc.firewall6 and rc.d/ip6fw were removed.
1263 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
1264 variables are obsoleted. Instead, the following new rc
1265 variables are added to rc.d/ipfw:
1267 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
1268 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
1269 firewall_simple_onet_ipv6, firewall_trusted_ipv6
1271 The meanings correspond to the relevant IPv4 variables.
1277 The default terminal emulation for syscons(4) has been changed
1278 from cons25 to xterm on all platforms except pc98. This means
1279 that the /etc/ttys file needs to be updated to ensure correct
1280 operation of applications on the console.
1282 The terminal emulation style can be toggled per window by using
1283 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration
1284 options can be used to change the compile-time default back to
1287 To prevent graphical artifacts, make sure the TERM environment
1288 variable is set to match the terminal emulation that is being
1289 performed by syscons(4).
1292 The layout of the structure ieee80211req_scan_result has changed.
1293 Applications that require wireless scan results (e.g. ifconfig(8))
1294 from net80211 need to be recompiled.
1296 Applications such as wpa_supplicant(8) may require a full world
1297 build without using NO_CLEAN in order to get synchronized with the
1301 The iwn(4) driver has been updated to support the 5000 and 5150 series.
1302 There's one kernel module for each firmware. Adding "device iwnfw"
1303 to the kernel configuration file means including all three firmware
1304 images inside the kernel. If you want to include just the one for
1305 your wireless card, use the devices iwn4965fw, iwn5000fw or
1309 The rc.d/network_ipv6, IPv6 configuration script has been integrated
1310 into rc.d/netif. The changes are the following:
1312 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF
1313 for IPv4. For aliases, $ifconfig_IF_aliasN should be used.
1314 Note that both variables need the "inet6" keyword at the head.
1316 Do not set $ipv6_network_interfaces manually if you do not
1317 understand what you are doing. It is not needed in most cases.
1319 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but
1322 2. $ipv6_enable is obsolete. Use $ipv6_prefer and
1323 "inet6 accept_rtadv" keyword in ifconfig(8) instead.
1325 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and
1326 all configured interfaces have "inet6 accept_rtadv" in the
1327 $ifconfig_IF_ipv6. These are for backward compatibility.
1329 3. A new variable $ipv6_prefer has been added. If NO, IPv6
1330 functionality of interfaces with no corresponding
1331 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag,
1332 and the default address selection policy of ip6addrctl(8)
1333 is the IPv4-preferred one (see rc.d/ip6addrctl for more details).
1334 Note that if you want to configure IPv6 functionality on the
1335 disabled interfaces after boot, first you need to clear the flag by
1336 using ifconfig(8) like:
1338 ifconfig em0 inet6 -ifdisabled
1340 If YES, the default address selection policy is set as
1343 The default value of $ipv6_prefer is NO.
1345 4. If your system need to receive Router Advertisement messages,
1346 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8)
1347 scripts automatically invoke rtsol(8) when the interface becomes
1348 UP. The Router Advertisement messages are used for SLAAC
1349 (State-Less Address AutoConfiguration).
1352 802.11s D3.03 support was committed. This is incompatible with the
1353 previous code, which was based on D3.0.
1356 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value
1357 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to
1358 control whether accepting Router Advertisement messages or not.
1359 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and
1360 a sysctl variable net.inet6.ip6.auto_linklocal is its default value.
1361 The ifconfig(8) utility now supports these flags.
1364 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
1365 mount(8) and -a option for df(1) to see them.
1368 The old tunable hw.bus.devctl_disable has been superseded by
1369 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be
1370 replaced by hw.bus.devctl_queue=0. The default for this new tunable
1374 Remove the option STOP_NMI. The default action is now to use NMI only
1375 for KDB via the newly introduced function stop_cpus_hard() and
1376 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64.
1379 The stable/8 branch created in subversion. This corresponds to the
1380 RELENG_8 branch in CVS.
1383 Bump the shared library version numbers for all libraries that do not
1384 use symbol versioning as part of the 8.0-RELEASE cycle. Bump
1385 __FreeBSD_version to 800105.
1388 Due to changes in the implementation of virtual network stack support,
1389 all network-related kernel modules must be recompiled. As this change
1390 breaks the ABI, bump __FreeBSD_version to 800104.
1393 The TOE interface to the TCP syncache has been modified to remove
1394 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack.
1395 The cxgb driver is the only TOE consumer affected by this change, and
1396 needs to be recompiled along with the kernel. As this change breaks
1397 the ABI, bump __FreeBSD_version to 800103.
1400 Padding has been added to struct tcpcb, sackhint and tcpstat in
1401 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
1402 maintaining the ABI. However, this change breaks the ABI, so bump
1403 __FreeBSD_version to 800102. User space tools that rely on the size of
1404 any of these structs (e.g. sockstat) need to be recompiled.
1407 The NFS_LEGACYRPC option has been removed along with the old kernel
1408 RPC implementation that this option selected. Kernel configurations
1409 may need to be adjusted.
1412 The network interface device nodes at /dev/net/<interface> have been
1413 removed. All ioctl operations can be performed the normal way using
1414 routing sockets. The kqueue functionality can generally be replaced
1415 with routing sockets.
1418 The documentation from the FreeBSD Documentation Project (Handbook,
1419 FAQ, etc.) is now installed via packages by sysinstall(8) and under
1420 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc.
1423 The ABI of various structures related to the SYSV IPC API have been
1424 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel
1425 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to
1429 Layout of struct vnet has changed as routing related variables were
1430 moved to their own Vimage module. Modules need to be recompiled. Bump
1431 __FreeBSD_version to 800099.
1434 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024
1435 respectively. As long as no more than 16 groups per process are used,
1436 no changes should be visible. When more than 16 groups are used, old
1437 binaries may fail if they call getgroups() or getgrouplist() with
1438 statically sized storage. Recompiling will work around this, but
1439 applications should be modified to use dynamically allocated storage
1440 for group arrays as POSIX.1-2008 does not cap an implementation's
1441 number of supported groups at NGROUPS_MAX+1 as previous versions did.
1443 NFS and portalfs mounts may also be affected as the list of groups is
1444 truncated to 16. Users of NFS who use more than 16 groups, should
1445 take care that negative group permissions are not used on the exported
1446 file systems as they will not be reliable unless a GSSAPI based
1447 authentication method is used.
1450 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This
1451 option compiles in the support for adaptive spinning for lockmgrs
1452 which want to enable it. The lockinit() function now accepts the flag
1453 LK_ADAPTIVE in order to make the lock object subject to adaptive
1454 spinning when both held in write and read mode.
1457 The layout of the structure returned by IEEE80211_IOC_STA_INFO has
1458 changed. User applications that use this ioctl need to be rebuilt.
1461 The layout of struct thread has changed. Kernel and modules need to
1465 The layout of structs ifnet, domain, protosw and vnet_net has changed.
1466 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097.
1469 window(1) has been removed from the base system. It can now be
1470 installed from ports. The port is called misc/window.
1473 The way we are storing and accessing `routing table' entries has
1474 changed. Programs reading the FIB, like netstat, need to be
1478 A new netisr implementation has been added for FreeBSD 8. Network
1479 file system modules, such as igmp, ipdivert, and others, should be
1481 Bump __FreeBSD_version to 800096.
1484 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no
1488 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
1489 Bump __FreeBSD_version to 800094.
1492 Add mnt_xflag field to 'struct mount'. File system modules need to be
1494 Bump __FreeBSD_version to 800093.
1497 The compiling option ADAPTIVE_SX has been retired while it has been
1498 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
1499 The KPI for sx_init_flags() changes as accepting flags:
1500 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has
1501 been introduced in order to handle the reversed logic.
1502 Bump __FreeBSD_version to 800092.
1505 Add support for hierarchical jails. Remove global securelevel.
1506 Bump __FreeBSD_version to 800091.
1509 The layout of struct vnet_net has changed, therefore modules
1511 Bump __FreeBSD_version to 800090.
1514 The newly imported zic(8) produces a new format in the output. Please
1515 run tzsetup(8) to install the newly created data to /etc/localtime.
1518 The sysctl tree for the usb stack has renamed from hw.usb2.* to
1519 hw.usb.* and is now consistent again with previous releases.
1522 802.11 monitor mode support was revised and driver api's were changed.
1523 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead
1524 of DLT_IEEE802_11. No user-visible data structures were changed but
1525 applications that use DLT_IEEE802_11 may require changes.
1526 Bump __FreeBSD_version to 800088.
1529 The layout of the following structs has changed: sysctl_oid,
1530 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
1531 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
1532 panics may be experienced. World rebuild is required for
1533 correctly checking networking state from userland.
1534 Bump __FreeBSD_version to 800085.
1537 MLDv2 and Source-Specific Multicast (SSM) have been merged
1538 to the IPv6 stack. VIMAGE hooks are in but not yet used.
1539 The implementation of SSM within FreeBSD's IPv6 stack closely
1540 follows the IPv4 implementation.
1542 For kernel developers:
1544 * The most important changes are that the ip6_output() and
1545 ip6_input() paths no longer take the IN6_MULTI_LOCK,
1546 and this lock has been downgraded to a non-recursive mutex.
1548 * As with the changes to the IPv4 stack to support SSM, filtering
1549 of inbound multicast traffic must now be performed by transport
1550 protocols within the IPv6 stack. This does not apply to TCP and
1551 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
1553 * The KPIs used by IPv6 multicast are similar to those used by
1554 the IPv4 stack, with the following differences:
1555 * im6o_mc_filter() is analogous to imo_multicast_filter().
1556 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
1557 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
1558 * IN6_LOOKUP_MULTI() has been deprecated and removed.
1559 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
1560 for MLDv1 have an additional 'timer' argument which is used to
1561 jitter the initial membership report for the solicited-node
1562 multicast membership on-link.
1563 * This is not strictly needed for MLDv2, which already jitters
1564 its report transmissions. However, the 'timer' argument is
1565 preserved in case MLDv1 is active on the interface.
1567 * The KAME linked-list based IPv6 membership implementation has
1568 been refactored to use a vector similar to that used by the IPv4
1570 Code which maintains a list of its own multicast memberships
1571 internally, e.g. carp, has been updated to reflect the new
1574 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
1575 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
1576 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
1577 implementation constraint which needs to be addressed in HEAD.
1579 For application developers:
1581 * The changes are broadly similar to those made for the IPv4
1584 * The use of IPv4 and IPv6 multicast socket options on the same
1585 socket, using mapped addresses, HAS NOT been tested or supported.
1587 * There are a number of issues with the implementation of various
1588 IPv6 multicast APIs which need to be resolved in the API surface
1589 before the implementation is fully compatible with KAME userland
1590 use, and these are mostly to do with interface index treatment.
1592 * The literature available discusses the use of either the delta / ASM
1593 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
1594 using setsourcefilter(3)/getsourcefilter(3). For more information
1595 please refer to RFC 3768, 'Socket Interface Extensions for
1596 Multicast Source Filters'.
1598 * Applications which use the published RFC 3678 APIs should be fine.
1600 For systems administrators:
1602 * The mtest(8) utility has been refactored to support IPv6, in
1603 addition to IPv4. Interface addresses are no longer accepted
1604 as arguments, their names must be used instead. The utility
1605 will map the interface name to its first IPv4 address as
1606 returned by getifaddrs(3).
1608 * The ifmcstat(8) utility has also been updated to print the MLDv2
1609 endpoint state and source filter lists via sysctl(3).
1611 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
1612 loopback of IPv6 multicast datagrams by default; it defaults to 1
1613 to preserve the existing behaviour. Disabling multicast loopback is
1614 recommended for optimal system performance.
1616 * The IPv6 MROUTING code has been changed to examine this sysctl
1617 instead of attempting to perform a group lookup before looping
1618 back forwarded datagrams.
1620 Bump __FreeBSD_version to 800084.
1623 Implement low-level Bluetooth HCI API.
1624 Bump __FreeBSD_version to 800083.
1627 The layout of struct malloc_type, used by modules to register new
1628 memory allocation types, has changed. Most modules will need to
1629 be rebuilt or panics may be experienced.
1630 Bump __FreeBSD_version to 800081.
1633 Anticipate overflowing inp_flags - add inp_flags2.
1634 This changes most offsets in inpcb, so checking v4 connection
1635 state will require a world rebuild.
1636 Bump __FreeBSD_version to 800080.
1639 Add an llentry to struct route and struct route_in6. Modules
1640 embedding a struct route will need to be recompiled.
1641 Bump __FreeBSD_version to 800079.
1644 The size of rt_metrics_lite and by extension rtentry has changed.
1645 Networking administration apps will need to be recompiled.
1646 The route command now supports show as an alias for get, weighting
1647 of routes, sticky and nostick flags to alter the behavior of stateful
1649 Bump __FreeBSD_version to 800078.
1652 Do not use Giant for kbdmux(4) locking. This is wrong and
1653 apparently causing more problems than it solves. This will
1654 re-open the issue where interrupt handlers may race with
1655 kbdmux(4) in polling mode. Typical symptoms include (but
1656 not limited to) duplicated and/or missing characters when
1657 low level console functions (such as gets) are used while
1658 interrupts are enabled (for example geli password prompt,
1659 mountroot prompt etc.). Disabling kbdmux(4) may help.
1662 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
1663 kernel modules referencing any of the above need to be recompiled.
1664 Bump __FreeBSD_version to 800075.
1667 GEOM_PART has become the default partition slicer for storage devices,
1668 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
1669 introduces some changes:
1671 MSDOS/EBR: the devices created from MSDOS extended partition entries
1672 (EBR) can be named differently than with GEOM_MBR and are now symlinks
1673 to devices with offset-based names. fstabs may need to be modified.
1675 BSD: the "geometry does not match label" warning is harmless in most
1676 cases but it points to problems in file system misalignment with
1677 disk geometry. The "c" partition is now implicit, covers the whole
1678 top-level drive and cannot be (mis)used by users.
1680 General: Kernel dumps are now not allowed to be written to devices
1681 whose partition types indicate they are meant to be used for file
1682 systems (or, in case of MSDOS partitions, as something else than
1685 Most of these changes date approximately from 200812.
1688 The uscanner(4) driver has been removed from the kernel. This follows
1689 Linux removing theirs in 2.6 and making libusb the default interface
1690 (supported by sane).
1693 The multicast forwarding code has been cleaned up. netstat(1)
1694 only relies on KVM now for printing bandwidth upcall meters.
1695 The IPv4 and IPv6 modules are split into ip_mroute_mod and
1696 ip6_mroute_mod respectively. The config(5) options for statically
1697 compiling this code remain the same, i.e. 'options MROUTING'.
1700 Support for the IFF_NEEDSGIANT network interface flag has been
1701 removed, which means that non-MPSAFE network device drivers are no
1702 longer supported. In particular, if_ar, if_sr, and network device
1703 drivers from the old (legacy) USB stack can no longer be built or
1707 POSIX.1 Native Language Support (NLS) has been enabled in libc and
1708 a bunch of new language catalog files have also been added.
1709 This means that some common libc messages are now localized and
1710 they depend on the LC_MESSAGES environmental variable.
1713 The k8temp(4) driver has been renamed to amdtemp(4) since
1714 support for Family 10 and Family 11 CPU families was added.
1717 IGMPv3 and Source-Specific Multicast (SSM) have been merged
1718 to the IPv4 stack. VIMAGE hooks are in but not yet used.
1720 For kernel developers, the most important changes are that the
1721 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
1722 and this lock has been downgraded to a non-recursive mutex.
1724 Transport protocols (UDP, Raw IP) are now responsible for filtering
1725 inbound multicast traffic according to group membership and source
1726 filters. The imo_multicast_filter() KPI exists for this purpose.
1727 Transports which do not use multicast (SCTP, TCP) already reject
1728 multicast by default. Forwarding and receive performance may improve
1729 as a mutex acquisition is no longer needed in the ip_input()
1730 low-level input path. in_addmulti() and in_delmulti() are shimmed
1731 to new KPIs which exist to support SSM in-kernel.
1733 For application developers, it is recommended that loopback of
1734 multicast datagrams be disabled for best performance, as this
1735 will still cause the lock to be taken for each looped-back
1736 datagram transmission. The net.inet.ip.mcast.loop sysctl may
1737 be tuned to 0 to disable loopback by default; it defaults to 1
1738 to preserve the existing behaviour.
1740 For systems administrators, to obtain best performance with
1741 multicast reception and multiple groups, it is always recommended
1742 that a card with a suitably precise hash filter is used. Hash
1743 collisions will still result in the lock being taken within the
1744 transport protocol input path to check group membership.
1746 If deploying FreeBSD in an environment with IGMP snooping switches,
1747 it is recommended that the net.inet.igmp.sendlocal sysctl remain
1748 enabled; this forces 224.0.0.0/24 group membership to be announced
1751 The size of 'struct igmpstat' has changed; netstat needs to be
1752 recompiled to reflect this.
1753 Bump __FreeBSD_version to 800070.
1756 libusb20.so.1 is now installed as libusb.so.1 and the ports system
1757 updated to use it. This requires a buildworld/installworld in order to
1758 update the library and dependencies (usbconfig, etc). Its advisable to
1759 rebuild all ports which uses libusb. More specific directions are given
1760 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
1761 libusb are no longer required and can be removed.
1764 A workaround is committed to allow the creation of System V shared
1765 memory segment of size > 2 GB on the 64-bit architectures.
1766 Due to a limitation of the existing ABI, the shm_segsz member
1767 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
1768 wrong for large segments. Note that limits must be explicitly
1769 raised to allow such segments to be created.
1772 The layout of struct ifnet has changed, requiring a rebuild of all
1773 network device driver modules.
1776 The /dev handling for the new USB stack has changed, a
1777 buildworld/installworld is required for libusb20.
1780 The new USB2 stack has now been permanently moved in and all kernel and
1781 module names reverted to their previous values (eg, usb, ehci, ohci,
1782 ums, ...). The old usb stack can be compiled in by prefixing the name
1783 with the letter 'o', the old usb modules have been removed.
1784 Updating entry 20090216 for xorg and 20090215 for libmap may still
1788 The rc.conf(5) option if_up_delay has been renamed to
1789 defaultroute_delay to better reflect its purpose. If you have
1790 customized this setting in /etc/rc.conf you need to update it to
1794 xorg 7.4 wants to configure its input devices via hald which does not
1795 yet work with USB2. If the keyboard/mouse does not work in xorg then
1797 Option "AllowEmptyInput" "off"
1798 to your ServerLayout section. This will cause X to use the configured
1799 kbd and mouse sections from your xorg.conf.
1802 The GENERIC kernels for all architectures now default to the new USB2
1803 stack. No kernel config options or code have been removed so if a
1804 problem arises please report it and optionally revert to the old USB
1805 stack. If you are loading USB kernel modules or have a custom kernel
1806 that includes GENERIC then ensure that usb names are also changed over,
1807 eg uftdi -> usb2_serial_ftdi.
1809 Older programs linked against the ports libusb 0.1 need to be
1810 redirected to the new stack's libusb20. /etc/libmap.conf can
1812 # Map old usb library to new one for usb2 stack
1813 libusb-0.1.so.8 libusb20.so.1
1816 All USB ethernet devices now attach as interfaces under the name ueN
1817 (eg. ue0). This is to provide a predictable name as vendors often
1818 change usb chipsets in a product without notice.
1821 The ichsmb(4) driver has been changed to require SMBus slave
1822 addresses be left-justified (xxxxxxx0b) rather than right-justified.
1823 All of the other SMBus controller drivers require left-justified
1824 slave addresses, so this change makes all the drivers provide the
1828 INET6 statistics (struct ip6stat) was updated.
1829 netstat(1) needs to be recompiled.
1832 NTFS has been removed from GENERIC kernel on amd64 to match
1833 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
1834 will load ntfs.ko module automatically when NTFS support is
1835 actually needed, unless ntfs.ko is not installed or security
1836 level prohibits loading kernel modules. If either is the case,
1837 "options NTFS" has to be added into kernel config.
1840 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
1841 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
1842 800061. User space tools that rely on the size of struct tcpcb in
1843 tcp_var.h (e.g. sockstat) need to be recompiled.
1846 ng_tty(4) module updated to match the new TTY subsystem.
1847 Due to API change, user-level applications must be updated.
1848 New API support added to mpd5 CVS and expected to be present
1849 in next mpd5.3 release.
1852 With __FreeBSD_version 800060 the makefs tool is part of
1853 the base system (it was a port).
1856 The afdata and ifnet locks have been changed from mutexes to
1857 rwlocks, network modules will need to be re-compiled.
1860 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
1861 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
1862 The new code reduced struct rtentry{} by 16 bytes on 32-bit
1863 architecture and 40 bytes on 64-bit architecture. The userland
1864 applications "arp" and "ndp" have been updated accordingly.
1865 The output from "netstat -r" shows only routing entries and
1866 none of the L2 information.
1869 __FreeBSD_version 800057 marks the switchover from the
1870 binary ath hal to source code. Users must add the line:
1872 options AH_SUPPORT_AR5416
1874 to their kernel config files when specifying:
1878 The ath_hal module no longer exists; the code is now compiled
1879 together with the driver in the ath module. It is now
1880 possible to tailor chip support (i.e. reduce the set of chips
1881 and thereby the code size); consult ath_hal(4) for details.
1884 __FreeBSD_version 800054 adds memory barriers to
1885 <machine/atomic.h>, new interfaces to ifnet to facilitate
1886 multiple hardware transmit queues for cards that support
1887 them, and a lock-less ring-buffer implementation to
1888 enable drivers to more efficiently manage queueing of
1892 A new version of ZFS (version 13) has been merged to -HEAD.
1893 This version has zpool attribute "listsnapshots" off by
1894 default, which means "zfs list" does not show snapshots,
1895 and is the same as Solaris behavior.
1898 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
1901 The uhci, ohci, ehci and slhci USB Host controller drivers have
1902 been put into separate modules. If you load the usb module
1903 separately through loader.conf you will need to load the
1904 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
1905 controller add the following to loader.conf:
1911 The ABI used by the PMC toolset has changed. Please keep
1912 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
1916 atapci kernel module now includes only generic PCI ATA
1917 driver. AHCI driver moved to ataahci kernel module.
1918 All vendor-specific code moved into separate kernel modules:
1919 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
1920 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
1921 atamarvell, atamicron, atanational, atanetcell, atanvidia,
1922 atapromise, ataserverworks, atasiliconimage, atasis, atavia
1925 The TTY subsystem of the kernel has been replaced by a new
1926 implementation, which provides better scalability and an
1927 improved driver model. Most common drivers have been migrated to
1928 the new TTY subsystem, while others have not. The following
1929 drivers have not yet been ported to the new TTY layer:
1932 cy, digi, rc, rp, sio
1938 ng_h4, ng_tty, ppp, sl, snp
1940 Adding these drivers to your kernel configuration file shall
1941 cause compilation to fail.
1944 ntpd has been upgraded to 4.2.4p5.
1947 OpenSSH has been upgraded to 5.1p1.
1949 For many years, FreeBSD's version of OpenSSH preferred DSA
1950 over RSA for host and user authentication keys. With this
1951 upgrade, we've switched to the vendor's default of RSA over
1952 DSA. This may cause upgraded clients to warn about unknown
1953 host keys even for previously known hosts. Users should
1954 follow the usual procedure for verifying host keys before
1955 accepting the RSA key.
1957 This can be circumvented by setting the "HostKeyAlgorithms"
1958 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
1961 Please note that the sequence of keys offered for
1962 authentication has been changed as well. You may want to
1963 specify IdentityFile in a different order to revert this
1967 The sio(4) driver has been removed from the i386 and amd64
1968 kernel configuration files. This means uart(4) is now the
1969 default serial port driver on those platforms as well.
1971 To prevent collisions with the sio(4) driver, the uart(4) driver
1972 uses different names for its device nodes. This means the
1973 onboard serial port will now most likely be called "ttyu0"
1974 instead of "ttyd0". You may need to reconfigure applications to
1975 use the new device names.
1977 When using the serial port as a boot console, be sure to update
1978 /boot/device.hints and /etc/ttys before booting the new kernel.
1979 If you forget to do so, you can still manually specify the hints
1980 at the loader prompt:
1982 set hint.uart.0.at="isa"
1983 set hint.uart.0.port="0x3F8"
1984 set hint.uart.0.flags="0x10"
1985 set hint.uart.0.irq="4"
1989 The gpt(8) utility has been removed. Use gpart(8) to partition
1993 The version that Linuxulator emulates was changed from 2.4.2
1994 to 2.6.16. If you experience any problems with Linux binaries
1995 please try to set sysctl compat.linux.osrelease to 2.4.2 and
1996 if it fixes the problem contact emulation mailing list.
1999 ISDN4BSD (I4B) was removed from the src tree. You may need to
2000 update a your kernel configuration and remove relevant entries.
2003 I have checked in code to support multiple routing tables.
2004 See the man pages setfib(1) and setfib(2).
2005 This is a hopefully backwards compatible version,
2006 but to make use of it you need to compile your kernel
2007 with options ROUTETABLES=2 (or more up to 16).
2010 The 802.11 wireless support was redone to enable multi-bss
2011 operation on devices that are capable. The underlying device
2012 is no longer used directly but instead wlanX devices are
2013 cloned with ifconfig. This requires changes to rc.conf files.
2014 For example, change:
2015 ifconfig_ath0="WPA DHCP"
2018 ifconfig_wlan0="WPA DHCP"
2019 see rc.conf(5) for more details. In addition, mergemaster of
2020 /etc/rc.d is highly recommended. Simultaneous update of userland
2021 and kernel wouldn't hurt either.
2023 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
2024 modules were merged into the base wlan module. All references
2025 to these modules (e.g. in kernel config files) must be removed.
2028 psm(4) has gained write(2) support in native operation level.
2029 Arbitrary commands can be written to /dev/psm%d and status can
2030 be read back from it. Therefore, an application is responsible
2031 for status validation and error recovery. It is a no-op in
2032 other operation levels.
2035 Support for KSE threading has been removed from the kernel. To
2036 run legacy applications linked against KSE libmap.conf may
2037 be used. The following libmap.conf may be used to ensure
2038 compatibility with any prior release:
2040 libpthread.so.1 libthr.so.1
2041 libpthread.so.2 libthr.so.2
2042 libkse.so.3 libthr.so.3
2045 The layout of struct vmspace has changed. This affects libkvm
2046 and any executables that link against libkvm and use the
2047 kvm_getprocs() function. In particular, but not exclusively,
2048 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
2049 The effects are minimal, but it's advisable to upgrade world
2053 The latest em driver no longer has support in it for the
2054 82575 adapter, this is now moved to the igb driver. The
2055 split was done to make new features that are incompatible
2056 with older hardware easier to do.
2059 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
2060 likewise the kernel option is now GEOM_LINUX_LVM.
2063 The default NFS mount mode has changed from UDP to TCP for
2064 increased reliability. If you rely on (insecurely) NFS
2065 mounting across a firewall you may need to update your
2069 Belatedly note the addition of m_collapse for compacting
2073 The fts(3) structures have been changed to use adequate
2074 integer types for their members and so to be able to cope
2075 with huge file trees. The old fts(3) ABI is preserved
2076 through symbol versioning in libc, so third-party binaries
2077 using fts(3) should still work, although they will not take
2078 advantage of the extended types. At the same time, some
2079 third-party software might fail to build after this change
2080 due to unportable assumptions made in its source code about
2081 fts(3) structure members. Such software should be fixed
2082 by its vendor or, in the worst case, in the ports tree.
2083 FreeBSD_version 800015 marks this change for the unlikely
2084 case that a portable fix is impossible.
2087 To upgrade to -current after this date, you must be running
2088 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
2089 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
2092 The ADAPTIVE_GIANT kernel option has been retired because its
2093 functionality is the default now.
2096 The AT keyboard emulation of sunkbd(4) has been turned on
2097 by default. In order to make the special symbols of the Sun
2098 keyboards driven by sunkbd(4) work under X these now have
2099 to be configured the same way as Sun USB keyboards driven
2100 by ukbd(4) (which also does AT keyboard emulation), f.e.:
2102 Option "XkbLayout" "us"
2103 Option "XkbRules" "xorg"
2104 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
2107 It has been decided that it is desirable to provide ABI
2108 backwards compatibility to the FreeBSD 4/5/6 versions of the
2109 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
2110 broken with the introduction of PCI domain support (see the
2111 20070930 entry). Unfortunately, this required the ABI of
2112 PCIOCGETCONF to be broken again in order to be able to
2113 provide backwards compatibility to the old version of that
2114 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
2115 again. As for prominent ports this affects neither pciutils
2116 nor xorg-server this time, the hal port needs to be rebuilt
2120 The misnamed kthread_create() and friends have been renamed
2121 to kproc_create() etc. Many of the callers already
2122 used kproc_start()..
2123 I will return kthread_create() and friends in a while
2124 with implementations that actually create threads, not procs.
2125 Renaming corresponds with version 800002.
2134 Avoid using make -j when upgrading. While generally safe, there are
2135 sometimes problems using -j to upgrade. If your upgrade fails with
2136 -j, please try again without -j. From time to time in the past there
2137 have been problems using -j with buildworld and/or installworld. This
2138 is especially true when upgrading between "distant" versions (eg one
2139 that cross a major release boundary or several minor releases, or when
2140 several months have passed on the -current branch).
2142 Sometimes, obscure build problems are the result of environment
2143 poisoning. This can happen because the make utility reads its
2144 environment when searching for values for global variables. To run
2145 your build attempts in an "environmental clean room", prefix all make
2146 commands with 'env -i '. See the env(1) manual page for more details.
2148 When upgrading from one major version to another it is generally best
2149 to upgrade to the latest code in the currently installed branch first,
2150 then do an upgrade to the new branch. This is the best-tested upgrade
2151 path, and has the highest probability of being successful. Please try
2152 this approach before reporting problems with a major version upgrade.
2154 When upgrading a live system, having a root shell around before
2155 installing anything can help undo problems. Not having a root shell
2156 around can lead to problems if pam has changed too much from your
2157 starting point to allow continued authentication after the upgrade.
2161 When upgrading the boot ZFS pool to a new version, always follow
2164 1.) recompile and reinstall the ZFS boot loader and boot block
2165 (this is part of "make buildworld" and "make installworld")
2167 2.) update the ZFS boot block on your boot drive
2169 The following example updates the ZFS boot block on the first
2170 partition (freebsd-boot) of a GPT partitioned drive ad0:
2171 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
2173 Non-boot pools do not need these updates.
2177 If you are updating from a prior version of FreeBSD (even one just
2178 a few days old), you should follow this procedure. It is the most
2179 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
2181 make kernel-toolchain
2182 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
2183 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
2185 To test a kernel once
2186 ---------------------
2187 If you just want to boot a kernel once (because you are not sure
2188 if it works, or if you want to boot a known bad kernel to provide
2189 debugging information) run
2190 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
2191 nextboot -k testkernel
2193 To just build a kernel when you know that it won't mess you up
2194 --------------------------------------------------------------
2195 This assumes you are already running a CURRENT system. Replace
2196 ${arch} with the architecture of your machine (e.g. "i386",
2197 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc).
2199 cd src/sys/${arch}/conf
2200 config KERNEL_NAME_HERE
2201 cd ../compile/KERNEL_NAME_HERE
2206 If this fails, go to the "To build a kernel" section.
2208 To rebuild everything and install it on the current system.
2209 -----------------------------------------------------------
2210 # Note: sometimes if you are running current you gotta do more than
2211 # is listed here if you are upgrading from a really old current.
2213 <make sure you have good level 0 dumps>
2215 make kernel KERNCONF=YOUR_KERNEL_HERE
2217 <reboot in single user> [3]
2224 To cross-install current onto a separate partition
2225 --------------------------------------------------
2226 # In this approach we use a separate partition to hold
2227 # current's root, 'usr', and 'var' directories. A partition
2228 # holding "/", "/usr" and "/var" should be about 2GB in
2231 <make sure you have good level 0 dumps>
2234 make buildkernel KERNCONF=YOUR_KERNEL_HERE
2235 <maybe newfs current's root partition>
2236 <mount current's root partition on directory ${CURRENT_ROOT}>
2237 make installworld DESTDIR=${CURRENT_ROOT}
2238 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
2239 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
2240 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
2241 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
2242 <reboot into current>
2243 <do a "native" rebuild/install as described in the previous section>
2244 <maybe install compatibility libraries from ports/misc/compat*>
2248 To upgrade in-place from stable to current
2249 ----------------------------------------------
2250 <make sure you have good level 0 dumps>
2252 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
2254 <reboot in single user> [3]
2261 Make sure that you've read the UPDATING file to understand the
2262 tweaks to various things you need. At this point in the life
2263 cycle of current, things change often and you are on your own
2264 to cope. The defaults can also change, so please read ALL of
2265 the UPDATING entries.
2267 Also, if you are tracking -current, you must be subscribed to
2268 freebsd-current@freebsd.org. Make sure that before you update
2269 your sources that you have read and understood all the recent
2270 messages there. If in doubt, please track -stable which has
2271 much fewer pitfalls.
2273 [1] If you have third party modules, such as vmware, you
2274 should disable them at this point so they don't crash your
2277 [3] From the bootblocks, boot -s, and then do
2282 adjkerntz -i # if CMOS is wall time
2283 Also, when doing a major release upgrade, it is required that
2284 you boot into single user mode to do the installworld.
2286 [4] Note: This step is non-optional. Failure to do this step
2287 can result in a significant reduction in the functionality of the
2288 system. Attempting to do it by hand is not recommended and those
2289 that pursue this avenue should read this file carefully, as well
2290 as the archives of freebsd-current and freebsd-hackers mailing lists
2291 for potential gotchas. The -U option is also useful to consider.
2292 See mergemaster(8) for more information.
2294 [5] Usually this step is a noop. However, from time to time
2295 you may need to do this if you get unknown user in the following
2296 step. It never hurts to do it all the time. You may need to
2297 install a new mergemaster (cd src/usr.sbin/mergemaster && make
2298 install) after the buildworld before this step if you last updated
2299 from current before 20130425 or from -stable before 20130430.
2301 [6] This only deletes old files and directories. Old libraries
2302 can be deleted by "make delete-old-libs", but you have to make
2303 sure that no program is using those libraries anymore.
2305 [8] In order to have a kernel that can run the 4.x binaries needed to
2306 do an installworld, you must include the COMPAT_FREEBSD4 option in
2307 your kernel. Failure to do so may leave you with a system that is
2308 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is
2309 required to run the 5.x binaries on more recent kernels. And so on
2310 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7.
2312 Make sure that you merge any new devices from GENERIC since the
2313 last time you updated your kernel config file.
2315 [9] When checking out sources, you must include the -P flag to have
2316 cvs prune empty directories.
2318 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
2319 "?=" instead of the "=" assignment operator, so that buildworld can
2320 override the CPUTYPE if it needs to.
2322 MAKEOBJDIRPREFIX must be defined in an environment variable, and
2323 not on the command line, or in /etc/make.conf. buildworld will
2324 warn if it is improperly defined.
2327 This file contains a list, in reverse chronological order, of major
2328 breakages in tracking -current. It is not guaranteed to be a complete
2329 list of such breakages, and only contains entries since October 10, 2007.
2330 If you need to see UPDATING entries from before that date, you will need
2331 to fetch an UPDATING file from an older FreeBSD release.
2333 Copyright information:
2335 Copyright 1998-2009 M. Warner Losh. All Rights Reserved.
2337 Redistribution, publication, translation and use, with or without
2338 modification, in full or in part, in any form or format of this
2339 document are permitted without further permission from the author.
2341 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
2342 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
2343 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
2344 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
2345 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
2346 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
2347 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2348 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
2349 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
2350 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
2351 POSSIBILITY OF SUCH DAMAGE.
2353 Contact Warner Losh if you have any questions about your use of
projects / FreeBSD / releng / 10.2.git / blob