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 20161010 p48 FreeBSD-SA-16:28.bind
15 FreeBSD-SA-16:29.bspatch
16 FreeBSD-SA-16:30.portsnap
18 Fix BIND remote Denial of Service vulnerability. [SA-16:28]
20 Fix bspatch heap overflow vulnerability. [SA-16:29]
22 Fix multiple portsnap vulnerabilities. [SA-16:30]
24 20160926 p47 FreeBSD-SA-16:26.openssl [revised]
26 Fix OpenSSL regression introduced in SA-16:26.
28 20160923 p46 FreeBSD-SA-16:26.openssl
30 Fix multiple OpenSSL vulnerabilitites.
32 20160725 p45 FreeBSD-SA-16:25.bspatch
33 FreeBSD-EN-16:09.freebsd-update
35 Fix bspatch heap overflow vulnerability. [SA-16:25]
37 Fix freebsd-update(8) support of FreeBSD 11.0 release
38 distribution. [EN-16:09]
40 20160604 p44 FreeBSD-SA-16:24.ntp
42 Fix multiple vulnerabilities of ntp.
44 20160531 p43 FreeBSD-SA-16:20.linux
45 FreeBSD-SA-16:21.43bsd
46 FreeBSD-SA-16:22.libarchive
47 FreeBSD-SA-16:23.libarchive
49 Fix kernel stack disclosure in Linux compatibility layer. [SA-16:20]
50 Fix kernel stack disclosure in 4.3BSD compatibility layer. [SA-16:21]
51 Fix directory traversal in cpio(1). [SA-16:22]
52 Fix buffer overflow in libarchive(3). [SA-16:23]
54 20160517 p42 FreeBSD-SA-16:18.atkbd
56 Fix buffer overflow in keyboard driver. [SA-16:18]
58 20160504 p41 FreeBSD-SA-16:17.openssl
61 Fix multiple OpenSSL vulnerabilitites. [SA-16:17]
63 Fix memory leak in ZFS. [EN-16:08]
65 20160429 p40 FreeBSD-SA-16:16.ntp
67 Fix multiple vulnerabilities of ntp.
69 20160316 p39 FreeBSD-SA-16:14.openssh-xauth
70 FreeBSD-SA-16:15.sysarch
72 Fix OpenSSH xauth(1) command injection. [SA-16:14]
73 Fix incorrect argument validation in sysarch(2). [SA-16:15]
75 20160310 p38 FreeBSD-SA-16:13.bind
76 FreeBSD-SA-16:12.openssl [revised]
78 Fix multiple vulnerabilities of BIND. [SA-16:13]
80 Fix a regression with OpenSSL patch. [SA-16:12]
82 20160303 p37 FreeBSD-SA-16:12.openssl
84 Fix multiple vulnerabilities of OpenSSL.
86 20160130 p36 FreeBSD-SA-16:11.openssl
88 Fix OpenSSL SSLv2 ciphersuite downgrade vulnerability. [SA-16:11]
90 20160127 p35 FreeBSD-SA-16:08.bind
92 FreeBSD-SA-16:10.linux
94 Fix BIND remote denial of service vulnerability. [SA-16:08]
96 Fix multiple vulnerabilities of ntp. [SA-16:09]
98 Fix Linux compatibility layer issetugid(2) system call
99 vulnerability. [SA-16:10]
101 20160114 p34 FreeBSD-SA-16:07.openssh
103 Fix OpenSSH client information leak. [SA-16:07]
105 20160114 p33 FreeBSD-EN-16:02.pf
106 FreeBSD-EN-16:03.yplib
107 FreeBSD-SA-16:01.sctp
109 FreeBSD-SA-16:03.linux
110 FreeBSD-SA-16:04.linux
112 FreeBSD-SA-16:06.bsnmpd
114 Fix pf(4) generating bad TCP checksums. [EN-16:02]
115 Fix infinite loop in YP/NIS client library. [EN-16:03]
116 Fix remote denial of service in SCTP. [SA-16:01]
117 Update NTP to 4.2.8p5. [SA-16:02]
118 Fix kernel memory diclosure in Linux compatibility layer. [SA-16:03]
119 Fix kernel memory overwrite in Linux compatibility layer. [SA-16:04]
120 Fix crash in TCP MD5 signatures. [SA-16:05]
121 Fix insecure default permissions for snmpd.config. [SA-16:06]
123 20151216 p32 FreeBSD-SA-15:27.bind
124 Fix BIND remote denial of service vulnerability. [SA-15:27]
126 20151205 p31 FreeBSD-SA-15:26.openssl
128 Fix OpenSSL X509_ATTRIBUTE memory leak. [SA-15:26]
130 20151104 p30 FreeBSD-SA-15:25.ntp [revised]
131 FreeBSD-EN-15:19.kqueue
134 Fix regression of ntpq(8) utility exiting due to trap 6 in
135 9.3-RELEASE-p29. [SA-15:25]
137 Fix regression in ntpd(8) lacking support for RAWDCF reference
138 clock in 9.3-RELEASE-p29. [SA-15:25]
140 Fix kqueue write events never fired for files greater 2GB. [EN-15:19]
142 Fix applications exiting due to segmentation violation on a correct
143 memory address. [EN-15:20]
145 20151026: p29 FreeBSD-SA-15:25.ntp
147 Fix multiple NTP vulnerabilities. New NTP version is 4.2.8p4.
149 The configuration file syntax has been changed, thus mergemaster
150 run is recommended. Now the "kod" parameter requires "limited"
151 parameter. If the ntp.conf is not updated, the ntpd will run
152 successfully, but with KoD disabled.
154 20151002: p28 FreeBSD-SA-15:24.rpcbind [revised]
155 Revised patch to address a regression that prevents NIS from working.
157 20150929: p27 FreeBSD-SA-15:24.rpcbind
159 Fix rpcbind(8) remote denial of service. [SA-15:24]
161 20150916: p26 FreeBSD-EN-15:18.pkg
163 Implement pubkey support for pkg(7) bootstrap. [EN-15:18]
165 20150902: p25 FreeBSD-SA-15:23.bind
167 Fix BIND remote denial of service vulnerability. [SA-15:23]
169 20150825: p24 FreeBSD-SA-15:21.amd64
170 FreeBSD-SA-15:22.openssh
173 Fix local privilege escalation in IRET handler. [SA-15:21]
175 Fix OpenSSH multiple vulnerabilities. [SA-15:22]
177 Fix insufficient check of unsupported pkg(7) signature methods.
180 20150818: p23 FreeBSD-SA-15:20.expat
182 Fix multiple integer overflows in expat (libbsdxml) XML parser.
185 20150805: p22 FreeBSD-SA-15:19.routed
187 Fix routed remote denial of service vulnerability.
189 20150728: p21 FreeBSD-SA-15:15.tcp
190 FreeBSD-SA-15:16.openssh
191 FreeBSD-SA-15:17.bind
193 Fix resource exhaustion in TCP reassembly. [SA-15:15]
195 Fix OpenSSH multiple vulnerabilities. [SA-15:16]
197 Fix BIND remote denial of service vulnerability. [SA-15:17]
199 20150721: p20 FreeBSD-SA-15:13.tcp
201 Fix resource exhaustion due to sessions stuck in LAST_ACK state.
204 20150707: p19 FreeBSD-SA-15:11.bind
205 Fix BIND resolver remote denial of service when validating.
207 20150630: p18 FreeBSD-EN-15:08.sendmail [revised]
208 FreeBSD-EN-15:09.xlocale
210 Improvements to sendmail TLS/DH interoperability. [EN-15:08]
212 Fix inconsistency between locale and rune locale states.
215 20150618: p17 FreeBSD-EN-15:08.sendmail
216 Improvements to sendmail TLS/DH interoperability. [EN-15:08]
218 20150612: p16 FreeBSD-SA-15:10.openssl
219 Fix multiple vulnerabilities in OpenSSL. [SA-15:10]
221 20150609: p15 FreeBSD-EN-15:06.file
223 Updated base system file(1) to 5.22 to address multiple denial
226 20150513: p14 FreeBSD-EN-15:04.freebsd-update
228 Fix bug with freebsd-update(8) that does not ensure the previous
229 upgrade was completed. [EN-15:04]
231 20150407: p13 FreeBSD-SA-15:04.igmp [revised]
233 FreeBSD-SA-15:09.ipv6
235 Improved patch for SA-15:04.igmp.
237 Fix multiple vulnerabilities of ntp. [SA-15:07]
239 Fix Denial of Service with IPv6 Router Advertisements. [SA-15:09]
242 Fix patch for SA-15:06.openssl.
244 20150319: p11 FreeBSD-SA-15:06.openssl
245 Fix multiple vulnerabilities in OpenSSL. [SA-15:06]
247 20150225: p10 FreeBSD-SA-15:04.igmp
248 FreeBSD-SA-15:05.bind
250 FreeBSD-EN-15:02.openssl
251 FreeBSD-EN-15:03.freebsd-update
253 Fix integer overflow in IGMP protocol. [SA-15:04]
255 Fix BIND remote denial of service vulnerability. [SA-15:05]
257 Fix vt(4) crash with improper ioctl parameters. [EN-15:01]
259 Updated base system OpenSSL to 0.9.8zd. [EN-15:02]
261 Fix freebsd-update libraries update ordering issue. [EN-15:03]
263 20150127: p9 FreeBSD-SA-15:02.kmem
264 FreeBSD-SA-15:03.sctp
266 Fix SCTP SCTP_SS_VALUE kernel memory corruption and disclosure
267 vulnerability. [SA-15:02]
269 Fix SCTP stream reset vulnerability. [SA-15:03]
271 20150114: p8 FreeBSD-SA-15:01.openssl
272 Fix multiple vulnerabilities in OpenSSL. [SA-15:01]
274 20141223: p7 FreeBSD-SA-14:31.ntp
275 FreeBSD-EN-14:13.freebsd-update
277 Fix multiple vulnerabilities in NTP suite. [SA-14:31]
278 Fix directory deletion issue in freebsd-update. [EN-14:13]
280 20141210: p6 FreeBSD-SA-14:28.file
281 FreeBSD-SA-14:29.bind
283 Fix multiple vulnerabilities in file(1) and libmagic(3).
286 Fix BIND remote denial of service vulnerability. [SA-14:29]
288 20141104: p5 FreeBSD-SA-14:25.setlogin
292 Fix kernel stack disclosure in setlogin(2) / getlogin(2).
295 Fix remote command execution in ftp(1). [SA-14:26]
297 Fix NFSv4 and ZFS cache consistency issue. [EN-14:12]
299 20141022: p4 FreeBSD-EN-14:10.tzdata
300 FreeBSD-EN-14:11.crypt
302 Time zone data file update. [EN-14:10]
304 Change crypt(3) default hashing algorithm back to DES. [EN-14:11]
306 20141021: p3 FreeBSD-SA-14:20.rtsold
307 FreeBSD-SA-14:21.routed
308 FreeBSD-SA-14:22.namei
309 FreeBSD-SA-14:23.openssl
311 Fix rtsold(8) remote buffer overflow vulnerability. [SA-14:20]
313 Fix routed(8) remote denial of service vulnerability. [SA-14:21]
315 Fix memory leak in sandboxed namei lookup. [SA-14:22]
317 Fix OpenSSL multiple vulnerabilities. [SA-14:23]
319 20140916: p2 FreeBSD-SA-14:19.tcp
320 Fix Denial of Service in TCP packet processing. [SA-14:19]
322 20140909: p1 FreeBSD-SA-14:18.openssl
323 Fix OpenSSL multiple vulnerabilities. [SA-14:18]
329 On i386 and amd64 systems, the onifconsole flag is now set by default
330 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled
331 as a login TTY if it is set in the bootloader as an active kernel
332 console. No changes in behavior should result otherwise. To revert to
333 the previous behavior, set ttyu0 to "off" in /etc/ttys.
336 Clang and llvm have been upgraded to 3.4.1 release.
339 Clang and llvm have been upgraded to 3.4 release.
342 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has
343 been deprecated and will not be part of FreeBSD 11.0 and later
344 releases. If you use this driver, please consider switching to
345 the nfe(4) driver instead.
348 The behavior of gss_pseudo_random() for the krb5 mechanism
349 has changed, for applications requesting a longer random string
350 than produced by the underlying enctype's pseudo-random() function.
351 In particular, the random string produced from a session key of
352 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will
353 be different at the 17th octet and later, after this change.
354 The counter used in the PRF+ construction is now encoded as a
355 big-endian integer in accordance with RFC 4402.
356 __FreeBSD_version is bumped to 902505.
362 Behavior of devfs rules path matching has been changed.
363 Pattern is now always matched against fully qualified devfs
364 path and slash characters must be explicitly matched by
365 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs
366 subdirectories must be reviewed.
369 hastctl(8)'s `status' command output changed to terse one-liner format.
370 Scripts using this should switch to `list' command or be rewritten.
373 Fix a bug that allowed a tracing process (e.g. gdb) to write
374 to a memory-mapped file in the traced process's address space
375 even if neither the traced process nor the tracing process had
376 write access to that file.
379 Added ZFS TRIM support which is enabled by default. To disable
380 ZFS TRIM support set vfs.zfs.trim.enabled=0 in loader.conf.
382 Creating new ZFS pools and adding new devices to existing pools
383 first performs a full device level TRIM which can take a significant
384 amount of time. The sysctl vfs.zfs.vdev.trim_on_init can be set to 0
385 to disable this behaviour.
387 ZFS TRIM requires the underlying device support BIO_DELETE which
388 is currently provided by methods such as ATA TRIM and SCSI UNMAP
389 via CAM, which are typically supported by SSD's.
391 Stats for ZFS TRIM can be monitored by looking at the sysctl's
392 under kstat.zfs.misc.zio_trim.
395 `list' command has been added to hastctl(8). For now, it is full
396 equivalent of `status' command.
397 WARNING: in the near future the output of hastctl's status command
398 will change to more terse format. If you use `hastctl status'
399 for parsing in your scripts, switch to `hastctl list'.
402 The mergemaster command now uses the default MAKEOBJDIRPREFIX
403 rather than creating it's own in the temporary directory in
404 order allow access to bootstrapped versions of tools such as
405 install and mtree. When upgrading from version of FreeBSD where
406 the install command does not support -l, you will need to
407 install a new mergemaster command if mergemaster -p is required.
408 This can be accomplished with the command (cd src/usr.sbin/mergemaster
411 Due to the use of the new -l option to install(1) during build
412 and install, you must take care not to directly set the INSTALL
413 make variable in your /etc/make.conf, /etc/src.conf, or on the
414 command line. If you wish to use the -C flag for all installs
415 you may be able to add INSTALL+=-C to /etc/make.conf or
419 Fix a bug that allows NFS clients to issue READDIR on files.
422 The install(1) option -M has changed meaning and now takes an
423 argument that is a file or path to append logs to. In the
424 unlikely event that -M was the last option on the command line
425 and the command line contained at least two files and a target
426 directory the first file will have logs appended to it. The -M
427 option served little practical purpose in the last decade so it's
428 used expected to be extremely rare.
431 A new compression method (lz4) has been merged to. Please refer to
432 zpool-features(7) for more information.
434 Please refer to the "ZFS notes" section of this file for information
435 on upgrading boot ZFS pools.
438 The VFS KBI was changed with the merge of several nullfs
439 optimizations and fixes. All filesystem modules must be
443 With the addition of auditdistd(8), a new auditdistd user is now
444 depended on during installworld. "mergemaster -p" can be used to add
445 the user prior to installworld, as documented in the handbook.
451 A new version of ZFS (pool version 5000) has been merged to 9-STABLE.
452 Starting with this version the old system of ZFS pool versioning
453 is superseded by "feature flags". This concept enables forward
454 compatibility against certain future changes in functionality of ZFS
455 pools. The first two read-only compatible "feature flags" for ZFS
456 pools are "com.delphix:async_destroy" and "com.delphix:empty_bpobj".
457 For more information read the new zpool-features(7) manual page.
458 Please refer to the "ZFS notes" section of this file for information
459 on upgrading boot ZFS pools.
462 The commit introducing bsd.compiler.mk breaks the traditional
463 building of kernels before this point. Add -m ${SRC}/share/mk
464 (for the right value of SRC) to your command lines to work
465 around; update your useland to a point after this; or use the
466 buildkernel/installkernel top-level targets. See also 20120829.
469 The IPFIREWALL_FORWARD kernel option has been removed. Its
470 functionality now turned on by default.
473 The random(4) support for the VIA hardware random number
474 generator (`PADLOCK') is no longer enabled unconditionally.
475 Add the PADLOCK_RNG option in the custom kernel config if
476 needed. The GENERIC kernels on i386 and amd64 do include the
477 option, so the change only affects the custom kernel
481 The amd64 kernel now uses xsetbv, xrstor instructions. To compile with
482 the traditional method, you must update your system with an installworld
483 before the kernel will build. The documented make buildkernel/installkernel
484 interfaces (coupled with fresh make kernel-toolchain) continue to work.
487 The sparc64 ZFS loader has been changed to no longer try to auto-
488 detect ZFS providers based on diskN aliases but now requires these
489 to be explicitly listed in the OFW boot-device environment variable.
492 Now unix domain sockets behave "as expected" on nullfs(5). Previously
493 nullfs(5) did not pass through all behaviours to the underlying layer,
494 as a result if we bound to a socket on the lower layer we could connect
495 only to the lower path; if we bound to the upper layer we could connect
496 only to the upper path. The new behavior is one can connect to both the
497 lower and the upper paths regardless what layer path one binds to.
500 The acpi_wmi(4) status device /dev/wmistat has been renamed to
504 A new VOP_ADVISE() was added to support posix_fadvise(2). All
505 filesystem modules must be recompiled.
508 The interface of the VOP_VPTOCNP(9) changed, now the returned
509 vnode shall be referenced, previously it was required to be
510 only held. All in-tree filesystems are converted.
516 The broken amd(4) driver has been replaced with esp(4) in the amd64,
517 i386 and pc98 GENERIC kernel configuration files.
520 This commit modifies vfs_register() so that it uses a hash
521 calculation to set vfc_typenum, which is enabled by default.
522 The first time a system is booted after this change, the
523 vfc_typenum values will change for all file systems. The
524 main effect of this is a change to the NFS server file handles
525 for file systems that use vfc_typenum in their fsid, such as ZFS.
526 It will, however, prevent vfc_typenum from changing when file
527 systems are loaded in a different order for subsequent reboots.
528 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf
529 until you are ready to remount all NFS clients after a reboot.
532 Bump the shared library version numbers for libraries that
533 do not use symbol versioning, have changed the ABI compared
534 to stable/8 and which shared library version was not bumped.
535 Done as part of 9.0-RELEASE cycle.
538 During the merge of Capsicum features, the fget(9) KPI was modified.
539 This may require the rebuilding of out-of-tree device drivers --
540 issues have been reported specifically with the nVidia device driver.
541 __FreeBSD_version is bumped to 900041.
543 Also, there is a period between 20110811 and 20110814 where the
544 special devices /dev/{stdin,stdout,stderr} did not work correctly.
545 Building world from a kernel during that window may not work.
548 The packet filter (pf) code has been updated to OpenBSD 4.5.
549 You need to update userland tools to be in sync with kernel.
550 This update breaks backward compatibility with earlier pfsync(4)
551 versions. Care must be taken when updating redundant firewall setups.
554 The following sysctls and tunables are retired on x86 platforms:
556 machdep.hlt_logical_cpus
557 The following sysctl is retired:
558 machdep.hyperthreading_allowed
559 The sysctls were supposed to provide a way to dynamically offline and
560 online selected CPUs on x86 platforms, but the implementation has not
561 been reliable especially with SCHED_ULE scheduler.
562 machdep.hyperthreading_allowed tunable is still available to ignore
563 hyperthreading CPUs at OS level.
564 Individual CPUs can be disabled using hint.lapic.X.disabled tunable,
565 where X is an APIC ID of a CPU. Be advised, though, that disabling
566 CPUs in non-uniform fashion will result in non-uniform topology and
567 may lead to sub-optimal system performance with SCHED_ULE, which is
571 cpumask_t type is retired and cpuset_t is used in order to describe
575 Changes to ifconfig(8) for dynamic address family detection mandate
576 that you are running a kernel of 20110525 or later. Make sure to
577 follow the update procedure to boot a new kernel before installing
581 Support for sun4v architecture is officially dropped
584 Several KPI breaking changes have been committed to the mii(4) layer,
585 the PHY drivers and consequently some Ethernet drivers using mii(4).
586 This means that miibus.ko and the modules of the affected Ethernet
587 drivers need to be recompiled.
589 Note to kernel developers: Given that the OUI bit reversion problem
590 was fixed as part of these changes all mii(4) commits related to OUIs,
591 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific
592 handling, no longer can be merged verbatim to stable/8 and previous
596 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci'
597 into their kernel configurations along with 'device pci'.
600 The default NFS client is now the new NFS client, so fstype "newnfs"
601 is now "nfs" and the regular/old NFS client is now fstype "oldnfs".
602 Although mounts via fstype "nfs" will usually work without userland
603 changes, it is recommended that the mount(8) and mount_nfs(8)
604 commands be rebuilt from sources and that a link to mount_nfs called
605 mount_oldnfs be created. The new client is compiled into the
606 kernel with "options NFSCL" and this is needed for diskless root
607 file systems. The GENERIC kernel configs have been changed to use
608 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER.
609 To use the regular/old client, you can "mount -t oldnfs ...". For
610 a diskless root file system, you must also include a line like:
612 vfs.root.mountfrom="oldnfs:"
614 in the boot/loader.conf on the root fs on the NFS server to make
615 a diskless root fs use the old client.
618 The GENERIC kernels for all architectures now default to the new
619 CAM-based ATA stack. It means that all legacy ATA drivers were
620 removed and replaced by respective CAM drivers. If you are using
621 ATA device names in /etc/fstab or other places, make sure to update
622 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY,
623 where 'Y's are the sequential numbers starting from zero for each type
624 in order of detection, unless configured otherwise with tunables,
625 see cam(4)). There will be symbolic links created in /dev/ to map
626 old adX devices to the respective adaY. They should provide basic
627 compatibility for file systems mounting in most cases, but they do
628 not support old user-level APIs and do not have respective providers
629 in GEOM. Consider using updated management tools with new device names.
631 It is possible to load devices ahci, ata, siis and mvs as modules,
632 but option ATA_CAM should remain in kernel configuration to make ata
633 module work as CAM driver supporting legacy ATA controllers. Device ata
634 still can be used in modular fashion (atacore + ...). Modules atadisk
635 and atapi* are not used and won't affect operation in ATA_CAM mode.
636 Note that to use CAM-based ATA kernel should include CAM devices
637 scbus, pass, da (or explicitly ada), cd and optionally others. All of
638 them are parts of the cam module.
640 ataraid(4) functionality is now supported by the RAID GEOM class.
641 To use it you can load geom_raid kernel module and use graid(8) tool
642 for management. Instead of /dev/arX device names, use /dev/raid/rX.
644 No kernel config options or code have been removed, so if a problem
645 arises, please report it and optionally revert to the old ATA stack.
646 In order to do it you can remove from the kernel config:
651 , and instead add back:
652 device atadisk # ATA disk drives
653 device ataraid # ATA RAID drives
654 device atapicd # ATAPI CDROM drives
655 device atapifd # ATAPI floppy drives
656 device atapist # ATAPI tape drives
659 The default NFS server has been changed to the new server, which
660 was referred to as the experimental server. If you need to switch
661 back to the old NFS server, you must now put the "-o" option on
662 both the mountd and nfsd commands. This can be done using the
663 mountd_flags and nfs_server_flags rc.conf variables until an
664 update to the rc scripts is committed, which is coming soon.
667 The GNU Objective-C runtime library (libobjc), and other Objective-C
668 related components have been removed from the base system. If you
669 require an Objective-C library, please use one of the available ports.
672 ath(4) has been split into bus- and device- modules. if_ath contains
673 the HAL, the TX rate control and the network device code. if_ath_pci
674 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb
675 contains the AHB glue. Users need to load both if_ath_pci and if_ath
676 in order to use ath on everything else.
678 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only
679 need to load if_ath and if_ath_pci for ath(4) operation.
682 As part of the replacement of sysinstall, the process of building
683 release media has changed significantly. For details, please re-read
684 release(7), which has been updated to reflect the new build process.
687 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This
688 is the last available version under GPLv2. It brings a number of new
689 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE
690 4.1 and SSE 4.2), better support for powerpc64, a number of new
691 directives, and lots of other small improvements. See the ChangeLog
692 file in contrib/binutils for the full details.
695 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868
696 compliant, and will now use half of hash for authentication.
697 This will break interoperability with all stacks (including all
698 actual FreeBSD versions) who implement
699 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for
701 The only workaround with such peers is to use another HMAC
702 algorithm for IPsec ("phase 2") authentication.
705 Remove the uio_yield prototype and symbol. This function has
706 been misnamed since it was introduced and should not be
707 globally exposed with this name. The equivalent functionality
708 is now available using kern_yield(curthread->td_user_pri).
709 The function remains undocumented.
712 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers,
713 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking
714 for scalar sysctls is defined but disabled. Code that needs
715 UQUAD to pass the type checking that must compile on older
716 systems where the define is not present can check against
717 __FreeBSD_version >= 900030.
719 The system dialog(1) has been replaced with a new version previously
720 in ports as devel/cdialog. dialog(1) is mostly command-line compatible
721 with the previous version, but the libdialog associated with it has
722 a largely incompatible API. As such, the original version of libdialog
723 will be kept temporarily as libodialog, until its base system consumers
724 are replaced or updated. Bump __FreeBSD_version to 900030.
727 If you are trying to run make universe on a -stable system, and you get
728 the following warning:
729 "Makefile", line 356: "Target architecture for i386/conf/GENERIC
730 unknown. config(8) likely too old."
731 or something similar to it, then you must upgrade your -stable system
732 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in
733 stable/8) or build the config from the latest stable/8 branch and
734 install it on your system.
736 Prior to this date, building a current universe on 8-stable system from
737 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing
738 error in the first kernel build phase. A new config on those old
739 systems will fix that problem for older versions of -current.
742 The TCP stack has been modified to allow Khelp modules to interact with
743 it via helper hook points and store per-connection data in the TCP
744 control block. Bump __FreeBSD_version to 900029. User space tools that
745 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to
749 Generic IEEE 802.3 annex 31B full duplex flow control support has been
750 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along
751 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted
752 to take advantage of it instead of using custom implementations. This
753 means that these drivers now no longer unconditionally advertise
754 support for flow control but only do so if flow control is a selected
755 media option. This was implemented in the generic support that way in
756 order to allow flow control to be switched on and off via ifconfig(8)
757 with the PHY specific default to typically off in order to protect
758 from unwanted effects. Consequently, if you used flow control with
759 one of the above mentioned drivers you now need to explicitly enable
761 ifconfig bge0 media auto mediaopt flowcontrol
763 Along with the above mentioned changes generic support for setting
764 1000baseT master mode also has been added and brgphy(4), ciphy(4),
765 e1000phy(4) as well as ip1000phy(4) have been converted to take
766 advantage of it. This means that these drivers now no longer take the
767 link0 parameter for selecting master mode but the master media option
768 has to be used instead, for example like in the following:
769 ifconfig bge0 media 1000baseT mediaopt full-duplex,master
771 Selection of master mode now is also available with all other PHY
772 drivers supporting 1000baseT.
775 The TCP stack has received a significant update to add support for
776 modularised congestion control and generally improve the clarity of
777 congestion control decisions. Bump __FreeBSD_version to 900025. User
778 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g.
779 sockstat) need to be recompiled.
782 The man(1) utility has been replaced by a new version that no longer
783 uses /etc/manpath.config. Please consult man.conf(5) for how to
784 migrate local entries to the new format.
787 The copyright strings printed by login(1) and sshd(8) at the time of a
788 new connection have been removed to follow other operating systems and
792 A workaround for a fixed ld bug has been removed in kernel code,
793 so make sure that your system ld is built from sources after
794 revision 210245 from 2010-07-19 (r211583 if building head kernel
795 on stable/8, r211584 for stable/7; both from 2010-08-21).
796 A symptom of incorrect ld version is different addresses for
797 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules.
800 The $ipv6_prefer variable in rc.conf(5) has been split into
801 $ip6addrctl_policy and $ipv6_activate_all_interfaces.
803 The $ip6addrctl_policy is a variable to choose a pre-defined
804 address selection policy set by ip6addrctl(8). A value
805 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The
808 The $ipv6_activate_all_interfaces specifies whether IFDISABLED
809 flag (see an entry of 20090926) is set on an interface with no
810 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for
811 security reason. If you want IPv6 link-local address on all
812 interfaces by default, set this to "YES".
814 The old ipv6_prefer="YES" is equivalent to
815 ipv6_activate_all_interfaces="YES" and
816 ip6addrctl_policy="ipv6_prefer".
819 DTrace has grown support for userland tracing. Due to this, DTrace is
820 now i386 and amd64 only.
821 dtruss(1) is now installed by default on those systems and a new
822 kernel module is needed for userland tracing: fasttrap.
823 No changes to your kernel config file are necessary to enable
824 userland tracing, but you might consider adding 'STRIP=' and
825 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want
826 to have informative userland stack traces in DTrace (ustack).
829 The acpi_aiboost(4) driver has been removed in favor of the new
830 aibs(4) driver. You should update your kernel configuration file.
833 BSD grep has been imported to the base system and it is built by
834 default. It is completely BSD licensed, highly GNU-compatible, uses
835 less memory than its GNU counterpart and has a small codebase.
836 However, it is slower than its GNU counterpart, which is mostly
837 noticeable for larger searches, for smaller ones it is measurable
838 but not significant. The reason is complex, the most important factor
839 is that we lack a modern and efficient regex library and GNU
840 overcomes this by optimizing the searches internally. Future work
841 on improving the regex performance is planned, for the meantime,
842 users that need better performance, can build GNU grep instead by
843 setting the WITH_GNU_GREP knob.
846 Due to the import of powerpc64 support, all existing powerpc kernel
847 configuration files must be updated with a machine directive like this:
848 machine powerpc powerpc
850 In addition, an updated config(8) is required to build powerpc kernels
854 A new version of ZFS (version 15) has been merged to -HEAD.
855 This version uses a python library for the following subcommands:
856 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
857 For full functionality of these commands the following port must
858 be installed: sysutils/py-zfs
861 'vm_page's are now hashed by physical address to an array of mutexes.
862 Currently this is only used to serialize access to hold_count. Over
863 time the page queue mutex will be peeled away. This changes the size
864 of pmap on every architecture. And requires all callers of vm_page_hold
865 and vm_page_unhold to be updated.
868 WITH_CTF can now be specified in src.conf (not recommended, there
869 are some problems with static executables), make.conf (would also
870 affect ports which do not use GNU make and do not override the
871 compile targets) or in the kernel config (via "makeoptions
873 When WITH_CTF was specified there before this was silently ignored,
874 so make sure that WITH_CTF is not used in places which could lead
875 to unwanted behavior.
878 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
879 to allow 32-bit compatibility on non-x86 platforms. All kernel
880 configurations on amd64 and ia64 platforms using these options must
881 be modified accordingly.
884 The utmp user accounting database has been replaced with utmpx,
885 the user accounting interface standardized by POSIX.
886 Unfortunately the semantics of utmp and utmpx don't match,
887 making it practically impossible to support both interfaces.
888 The user accounting database is used by tools like finger(1),
889 last(1), talk(1), w(1) and ac(8).
891 All applications in the base system use utmpx. This means only
892 local binaries (e.g. from the ports tree) may still use these
893 utmp database files. These applications must be rebuilt to make
896 After the system has been upgraded, it is safe to remove the old
897 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*),
898 assuming their contents is of no importance anymore. Old wtmp
899 databases can only be used by last(1) and ac(8) after they have
900 been converted to the new format using wtmpcvt(1).
903 Introduce the kernel thread "deadlock resolver" (which can be enabled
904 via the DEADLKRES option, see NOTES for more details) and the
905 sleepq_type() function for sleepqueues.
908 The rc.firewall and rc.firewall6 were unified, and
909 rc.firewall6 and rc.d/ip6fw were removed.
910 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
911 variables are obsoleted. Instead, the following new rc
912 variables are added to rc.d/ipfw:
914 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
915 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
916 firewall_simple_onet_ipv6, firewall_trusted_ipv6
918 The meanings correspond to the relevant IPv4 variables.
924 The default terminal emulation for syscons(4) has been changed
925 from cons25 to xterm on all platforms except pc98. This means
926 that the /etc/ttys file needs to be updated to ensure correct
927 operation of applications on the console.
929 The terminal emulation style can be toggled per window by using
930 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration
931 options can be used to change the compile-time default back to
934 To prevent graphical artifacts, make sure the TERM environment
935 variable is set to match the terminal emulation that is being
936 performed by syscons(4).
939 The layout of the structure ieee80211req_scan_result has changed.
940 Applications that require wireless scan results (e.g. ifconfig(8))
941 from net80211 need to be recompiled.
943 Applications such as wpa_supplicant(8) may require a full world
944 build without using NO_CLEAN in order to get synchronized with the
948 The iwn(4) driver has been updated to support the 5000 and 5150 series.
949 There's one kernel module for each firmware. Adding "device iwnfw"
950 to the kernel configuration file means including all three firmware
951 images inside the kernel. If you want to include just the one for
952 your wireless card, use the devices iwn4965fw, iwn5000fw or
956 The rc.d/network_ipv6, IPv6 configuration script has been integrated
957 into rc.d/netif. The changes are the following:
959 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF
960 for IPv4. For aliases, $ifconfig_IF_aliasN should be used.
961 Note that both variables need the "inet6" keyword at the head.
963 Do not set $ipv6_network_interfaces manually if you do not
964 understand what you are doing. It is not needed in most cases.
966 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but
969 2. $ipv6_enable is obsolete. Use $ipv6_prefer and
970 "inet6 accept_rtadv" keyword in ifconfig(8) instead.
972 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and
973 all configured interfaces have "inet6 accept_rtadv" in the
974 $ifconfig_IF_ipv6. These are for backward compatibility.
976 3. A new variable $ipv6_prefer has been added. If NO, IPv6
977 functionality of interfaces with no corresponding
978 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag,
979 and the default address selection policy of ip6addrctl(8)
980 is the IPv4-preferred one (see rc.d/ip6addrctl for more details).
981 Note that if you want to configure IPv6 functionality on the
982 disabled interfaces after boot, first you need to clear the flag by
983 using ifconfig(8) like:
985 ifconfig em0 inet6 -ifdisabled
987 If YES, the default address selection policy is set as
990 The default value of $ipv6_prefer is NO.
992 4. If your system need to receive Router Advertisement messages,
993 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8)
994 scripts automatically invoke rtsol(8) when the interface becomes
995 UP. The Router Advertisement messages are used for SLAAC
996 (State-Less Address AutoConfiguration).
999 802.11s D3.03 support was committed. This is incompatible with the
1000 previous code, which was based on D3.0.
1003 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value
1004 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to
1005 control whether accepting Router Advertisement messages or not.
1006 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and
1007 a sysctl variable net.inet6.ip6.auto_linklocal is its default value.
1008 The ifconfig(8) utility now supports these flags.
1011 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
1012 mount(8) and -a option for df(1) to see them.
1015 The old tunable hw.bus.devctl_disable has been superseded by
1016 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be
1017 replaced by hw.bus.devctl_queue=0. The default for this new tunable
1021 Remove the option STOP_NMI. The default action is now to use NMI only
1022 for KDB via the newly introduced function stop_cpus_hard() and
1023 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64.
1026 The stable/8 branch created in subversion. This corresponds to the
1027 RELENG_8 branch in CVS.
1030 Bump the shared library version numbers for all libraries that do not
1031 use symbol versioning as part of the 8.0-RELEASE cycle. Bump
1032 __FreeBSD_version to 800105.
1035 Due to changes in the implementation of virtual network stack support,
1036 all network-related kernel modules must be recompiled. As this change
1037 breaks the ABI, bump __FreeBSD_version to 800104.
1040 The TOE interface to the TCP syncache has been modified to remove
1041 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack.
1042 The cxgb driver is the only TOE consumer affected by this change, and
1043 needs to be recompiled along with the kernel. As this change breaks
1044 the ABI, bump __FreeBSD_version to 800103.
1047 Padding has been added to struct tcpcb, sackhint and tcpstat in
1048 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
1049 maintaining the ABI. However, this change breaks the ABI, so bump
1050 __FreeBSD_version to 800102. User space tools that rely on the size of
1051 any of these structs (e.g. sockstat) need to be recompiled.
1054 The NFS_LEGACYRPC option has been removed along with the old kernel
1055 RPC implementation that this option selected. Kernel configurations
1056 may need to be adjusted.
1059 The network interface device nodes at /dev/net/<interface> have been
1060 removed. All ioctl operations can be performed the normal way using
1061 routing sockets. The kqueue functionality can generally be replaced
1062 with routing sockets.
1065 The documentation from the FreeBSD Documentation Project (Handbook,
1066 FAQ, etc.) is now installed via packages by sysinstall(8) and under
1067 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc.
1070 The ABI of various structures related to the SYSV IPC API have been
1071 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel
1072 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to
1076 Layout of struct vnet has changed as routing related variables were
1077 moved to their own Vimage module. Modules need to be recompiled. Bump
1078 __FreeBSD_version to 800099.
1081 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024
1082 respectively. As long as no more than 16 groups per process are used,
1083 no changes should be visible. When more than 16 groups are used, old
1084 binaries may fail if they call getgroups() or getgrouplist() with
1085 statically sized storage. Recompiling will work around this, but
1086 applications should be modified to use dynamically allocated storage
1087 for group arrays as POSIX.1-2008 does not cap an implementation's
1088 number of supported groups at NGROUPS_MAX+1 as previous versions did.
1090 NFS and portalfs mounts may also be affected as the list of groups is
1091 truncated to 16. Users of NFS who use more than 16 groups, should
1092 take care that negative group permissions are not used on the exported
1093 file systems as they will not be reliable unless a GSSAPI based
1094 authentication method is used.
1097 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This
1098 option compiles in the support for adaptive spinning for lockmgrs
1099 which want to enable it. The lockinit() function now accepts the flag
1100 LK_ADAPTIVE in order to make the lock object subject to adaptive
1101 spinning when both held in write and read mode.
1104 The layout of the structure returned by IEEE80211_IOC_STA_INFO has
1105 changed. User applications that use this ioctl need to be rebuilt.
1108 The layout of struct thread has changed. Kernel and modules need to
1112 The layout of structs ifnet, domain, protosw and vnet_net has changed.
1113 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097.
1116 window(1) has been removed from the base system. It can now be
1117 installed from ports. The port is called misc/window.
1120 The way we are storing and accessing `routing table' entries has
1121 changed. Programs reading the FIB, like netstat, need to be
1125 A new netisr implementation has been added for FreeBSD 8. Network
1126 file system modules, such as igmp, ipdivert, and others, should be
1128 Bump __FreeBSD_version to 800096.
1131 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no
1135 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
1136 Bump __FreeBSD_version to 800094.
1139 Add mnt_xflag field to 'struct mount'. File system modules need to be
1141 Bump __FreeBSD_version to 800093.
1144 The compiling option ADAPTIVE_SX has been retired while it has been
1145 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
1146 The KPI for sx_init_flags() changes as accepting flags:
1147 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has
1148 been introduced in order to handle the reversed logic.
1149 Bump __FreeBSD_version to 800092.
1152 Add support for hierarchical jails. Remove global securelevel.
1153 Bump __FreeBSD_version to 800091.
1156 The layout of struct vnet_net has changed, therefore modules
1158 Bump __FreeBSD_version to 800090.
1161 The newly imported zic(8) produces a new format in the output. Please
1162 run tzsetup(8) to install the newly created data to /etc/localtime.
1165 The sysctl tree for the usb stack has renamed from hw.usb2.* to
1166 hw.usb.* and is now consistent again with previous releases.
1169 802.11 monitor mode support was revised and driver api's were changed.
1170 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead
1171 of DLT_IEEE802_11. No user-visible data structures were changed but
1172 applications that use DLT_IEEE802_11 may require changes.
1173 Bump __FreeBSD_version to 800088.
1176 The layout of the following structs has changed: sysctl_oid,
1177 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
1178 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
1179 panics may be experienced. World rebuild is required for
1180 correctly checking networking state from userland.
1181 Bump __FreeBSD_version to 800085.
1184 MLDv2 and Source-Specific Multicast (SSM) have been merged
1185 to the IPv6 stack. VIMAGE hooks are in but not yet used.
1186 The implementation of SSM within FreeBSD's IPv6 stack closely
1187 follows the IPv4 implementation.
1189 For kernel developers:
1191 * The most important changes are that the ip6_output() and
1192 ip6_input() paths no longer take the IN6_MULTI_LOCK,
1193 and this lock has been downgraded to a non-recursive mutex.
1195 * As with the changes to the IPv4 stack to support SSM, filtering
1196 of inbound multicast traffic must now be performed by transport
1197 protocols within the IPv6 stack. This does not apply to TCP and
1198 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
1200 * The KPIs used by IPv6 multicast are similar to those used by
1201 the IPv4 stack, with the following differences:
1202 * im6o_mc_filter() is analogous to imo_multicast_filter().
1203 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
1204 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
1205 * IN6_LOOKUP_MULTI() has been deprecated and removed.
1206 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
1207 for MLDv1 have an additional 'timer' argument which is used to
1208 jitter the initial membership report for the solicited-node
1209 multicast membership on-link.
1210 * This is not strictly needed for MLDv2, which already jitters
1211 its report transmissions. However, the 'timer' argument is
1212 preserved in case MLDv1 is active on the interface.
1214 * The KAME linked-list based IPv6 membership implementation has
1215 been refactored to use a vector similar to that used by the IPv4
1217 Code which maintains a list of its own multicast memberships
1218 internally, e.g. carp, has been updated to reflect the new
1221 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
1222 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
1223 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
1224 implementation constraint which needs to be addressed in HEAD.
1226 For application developers:
1228 * The changes are broadly similar to those made for the IPv4
1231 * The use of IPv4 and IPv6 multicast socket options on the same
1232 socket, using mapped addresses, HAS NOT been tested or supported.
1234 * There are a number of issues with the implementation of various
1235 IPv6 multicast APIs which need to be resolved in the API surface
1236 before the implementation is fully compatible with KAME userland
1237 use, and these are mostly to do with interface index treatment.
1239 * The literature available discusses the use of either the delta / ASM
1240 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
1241 using setsourcefilter(3)/getsourcefilter(3). For more information
1242 please refer to RFC 3768, 'Socket Interface Extensions for
1243 Multicast Source Filters'.
1245 * Applications which use the published RFC 3678 APIs should be fine.
1247 For systems administrators:
1249 * The mtest(8) utility has been refactored to support IPv6, in
1250 addition to IPv4. Interface addresses are no longer accepted
1251 as arguments, their names must be used instead. The utility
1252 will map the interface name to its first IPv4 address as
1253 returned by getifaddrs(3).
1255 * The ifmcstat(8) utility has also been updated to print the MLDv2
1256 endpoint state and source filter lists via sysctl(3).
1258 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
1259 loopback of IPv6 multicast datagrams by default; it defaults to 1
1260 to preserve the existing behaviour. Disabling multicast loopback is
1261 recommended for optimal system performance.
1263 * The IPv6 MROUTING code has been changed to examine this sysctl
1264 instead of attempting to perform a group lookup before looping
1265 back forwarded datagrams.
1267 Bump __FreeBSD_version to 800084.
1270 Implement low-level Bluetooth HCI API.
1271 Bump __FreeBSD_version to 800083.
1274 The layout of struct malloc_type, used by modules to register new
1275 memory allocation types, has changed. Most modules will need to
1276 be rebuilt or panics may be experienced.
1277 Bump __FreeBSD_version to 800081.
1280 Anticipate overflowing inp_flags - add inp_flags2.
1281 This changes most offsets in inpcb, so checking v4 connection
1282 state will require a world rebuild.
1283 Bump __FreeBSD_version to 800080.
1286 Add an llentry to struct route and struct route_in6. Modules
1287 embedding a struct route will need to be recompiled.
1288 Bump __FreeBSD_version to 800079.
1291 The size of rt_metrics_lite and by extension rtentry has changed.
1292 Networking administration apps will need to be recompiled.
1293 The route command now supports show as an alias for get, weighting
1294 of routes, sticky and nostick flags to alter the behavior of stateful
1296 Bump __FreeBSD_version to 800078.
1299 Do not use Giant for kbdmux(4) locking. This is wrong and
1300 apparently causing more problems than it solves. This will
1301 re-open the issue where interrupt handlers may race with
1302 kbdmux(4) in polling mode. Typical symptoms include (but
1303 not limited to) duplicated and/or missing characters when
1304 low level console functions (such as gets) are used while
1305 interrupts are enabled (for example geli password prompt,
1306 mountroot prompt etc.). Disabling kbdmux(4) may help.
1309 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
1310 kernel modules referencing any of the above need to be recompiled.
1311 Bump __FreeBSD_version to 800075.
1314 GEOM_PART has become the default partition slicer for storage devices,
1315 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
1316 introduces some changes:
1318 MSDOS/EBR: the devices created from MSDOS extended partition entries
1319 (EBR) can be named differently than with GEOM_MBR and are now symlinks
1320 to devices with offset-based names. fstabs may need to be modified.
1322 BSD: the "geometry does not match label" warning is harmless in most
1323 cases but it points to problems in file system misalignment with
1324 disk geometry. The "c" partition is now implicit, covers the whole
1325 top-level drive and cannot be (mis)used by users.
1327 General: Kernel dumps are now not allowed to be written to devices
1328 whose partition types indicate they are meant to be used for file
1329 systems (or, in case of MSDOS partitions, as something else than
1332 Most of these changes date approximately from 200812.
1335 The uscanner(4) driver has been removed from the kernel. This follows
1336 Linux removing theirs in 2.6 and making libusb the default interface
1337 (supported by sane).
1340 The multicast forwarding code has been cleaned up. netstat(1)
1341 only relies on KVM now for printing bandwidth upcall meters.
1342 The IPv4 and IPv6 modules are split into ip_mroute_mod and
1343 ip6_mroute_mod respectively. The config(5) options for statically
1344 compiling this code remain the same, i.e. 'options MROUTING'.
1347 Support for the IFF_NEEDSGIANT network interface flag has been
1348 removed, which means that non-MPSAFE network device drivers are no
1349 longer supported. In particular, if_ar, if_sr, and network device
1350 drivers from the old (legacy) USB stack can no longer be built or
1354 POSIX.1 Native Language Support (NLS) has been enabled in libc and
1355 a bunch of new language catalog files have also been added.
1356 This means that some common libc messages are now localized and
1357 they depend on the LC_MESSAGES environmental variable.
1360 The k8temp(4) driver has been renamed to amdtemp(4) since
1361 support for Family 10 and Family 11 CPU families was added.
1364 IGMPv3 and Source-Specific Multicast (SSM) have been merged
1365 to the IPv4 stack. VIMAGE hooks are in but not yet used.
1367 For kernel developers, the most important changes are that the
1368 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
1369 and this lock has been downgraded to a non-recursive mutex.
1371 Transport protocols (UDP, Raw IP) are now responsible for filtering
1372 inbound multicast traffic according to group membership and source
1373 filters. The imo_multicast_filter() KPI exists for this purpose.
1374 Transports which do not use multicast (SCTP, TCP) already reject
1375 multicast by default. Forwarding and receive performance may improve
1376 as a mutex acquisition is no longer needed in the ip_input()
1377 low-level input path. in_addmulti() and in_delmulti() are shimmed
1378 to new KPIs which exist to support SSM in-kernel.
1380 For application developers, it is recommended that loopback of
1381 multicast datagrams be disabled for best performance, as this
1382 will still cause the lock to be taken for each looped-back
1383 datagram transmission. The net.inet.ip.mcast.loop sysctl may
1384 be tuned to 0 to disable loopback by default; it defaults to 1
1385 to preserve the existing behaviour.
1387 For systems administrators, to obtain best performance with
1388 multicast reception and multiple groups, it is always recommended
1389 that a card with a suitably precise hash filter is used. Hash
1390 collisions will still result in the lock being taken within the
1391 transport protocol input path to check group membership.
1393 If deploying FreeBSD in an environment with IGMP snooping switches,
1394 it is recommended that the net.inet.igmp.sendlocal sysctl remain
1395 enabled; this forces 224.0.0.0/24 group membership to be announced
1398 The size of 'struct igmpstat' has changed; netstat needs to be
1399 recompiled to reflect this.
1400 Bump __FreeBSD_version to 800070.
1403 libusb20.so.1 is now installed as libusb.so.1 and the ports system
1404 updated to use it. This requires a buildworld/installworld in order to
1405 update the library and dependencies (usbconfig, etc). Its advisable to
1406 rebuild all ports which uses libusb. More specific directions are given
1407 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
1408 libusb are no longer required and can be removed.
1411 A workaround is committed to allow the creation of System V shared
1412 memory segment of size > 2 GB on the 64-bit architectures.
1413 Due to a limitation of the existing ABI, the shm_segsz member
1414 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
1415 wrong for large segments. Note that limits must be explicitly
1416 raised to allow such segments to be created.
1419 The layout of struct ifnet has changed, requiring a rebuild of all
1420 network device driver modules.
1423 The /dev handling for the new USB stack has changed, a
1424 buildworld/installworld is required for libusb20.
1427 The new USB2 stack has now been permanently moved in and all kernel and
1428 module names reverted to their previous values (eg, usb, ehci, ohci,
1429 ums, ...). The old usb stack can be compiled in by prefixing the name
1430 with the letter 'o', the old usb modules have been removed.
1431 Updating entry 20090216 for xorg and 20090215 for libmap may still
1435 The rc.conf(5) option if_up_delay has been renamed to
1436 defaultroute_delay to better reflect its purpose. If you have
1437 customized this setting in /etc/rc.conf you need to update it to
1441 xorg 7.4 wants to configure its input devices via hald which does not
1442 yet work with USB2. If the keyboard/mouse does not work in xorg then
1444 Option "AllowEmptyInput" "off"
1445 to your ServerLayout section. This will cause X to use the configured
1446 kbd and mouse sections from your xorg.conf.
1449 The GENERIC kernels for all architectures now default to the new USB2
1450 stack. No kernel config options or code have been removed so if a
1451 problem arises please report it and optionally revert to the old USB
1452 stack. If you are loading USB kernel modules or have a custom kernel
1453 that includes GENERIC then ensure that usb names are also changed over,
1454 eg uftdi -> usb2_serial_ftdi.
1456 Older programs linked against the ports libusb 0.1 need to be
1457 redirected to the new stack's libusb20. /etc/libmap.conf can
1459 # Map old usb library to new one for usb2 stack
1460 libusb-0.1.so.8 libusb20.so.1
1463 All USB ethernet devices now attach as interfaces under the name ueN
1464 (eg. ue0). This is to provide a predictable name as vendors often
1465 change usb chipsets in a product without notice.
1468 The ichsmb(4) driver has been changed to require SMBus slave
1469 addresses be left-justified (xxxxxxx0b) rather than right-justified.
1470 All of the other SMBus controller drivers require left-justified
1471 slave addresses, so this change makes all the drivers provide the
1475 INET6 statistics (struct ip6stat) was updated.
1476 netstat(1) needs to be recompiled.
1479 NTFS has been removed from GENERIC kernel on amd64 to match
1480 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
1481 will load ntfs.ko module automatically when NTFS support is
1482 actually needed, unless ntfs.ko is not installed or security
1483 level prohibits loading kernel modules. If either is the case,
1484 "options NTFS" has to be added into kernel config.
1487 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
1488 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
1489 800061. User space tools that rely on the size of struct tcpcb in
1490 tcp_var.h (e.g. sockstat) need to be recompiled.
1493 ng_tty(4) module updated to match the new TTY subsystem.
1494 Due to API change, user-level applications must be updated.
1495 New API support added to mpd5 CVS and expected to be present
1496 in next mpd5.3 release.
1499 With __FreeBSD_version 800060 the makefs tool is part of
1500 the base system (it was a port).
1503 The afdata and ifnet locks have been changed from mutexes to
1504 rwlocks, network modules will need to be re-compiled.
1507 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
1508 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
1509 The new code reduced struct rtentry{} by 16 bytes on 32-bit
1510 architecture and 40 bytes on 64-bit architecture. The userland
1511 applications "arp" and "ndp" have been updated accordingly.
1512 The output from "netstat -r" shows only routing entries and
1513 none of the L2 information.
1516 __FreeBSD_version 800057 marks the switchover from the
1517 binary ath hal to source code. Users must add the line:
1519 options AH_SUPPORT_AR5416
1521 to their kernel config files when specifying:
1525 The ath_hal module no longer exists; the code is now compiled
1526 together with the driver in the ath module. It is now
1527 possible to tailor chip support (i.e. reduce the set of chips
1528 and thereby the code size); consult ath_hal(4) for details.
1531 __FreeBSD_version 800054 adds memory barriers to
1532 <machine/atomic.h>, new interfaces to ifnet to facilitate
1533 multiple hardware transmit queues for cards that support
1534 them, and a lock-less ring-buffer implementation to
1535 enable drivers to more efficiently manage queueing of
1539 A new version of ZFS (version 13) has been merged to -HEAD.
1540 This version has zpool attribute "listsnapshots" off by
1541 default, which means "zfs list" does not show snapshots,
1542 and is the same as Solaris behavior.
1545 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
1548 The uhci, ohci, ehci and slhci USB Host controller drivers have
1549 been put into separate modules. If you load the usb module
1550 separately through loader.conf you will need to load the
1551 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
1552 controller add the following to loader.conf:
1558 The ABI used by the PMC toolset has changed. Please keep
1559 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
1563 atapci kernel module now includes only generic PCI ATA
1564 driver. AHCI driver moved to ataahci kernel module.
1565 All vendor-specific code moved into separate kernel modules:
1566 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
1567 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
1568 atamarvell, atamicron, atanational, atanetcell, atanvidia,
1569 atapromise, ataserverworks, atasiliconimage, atasis, atavia
1572 The TTY subsystem of the kernel has been replaced by a new
1573 implementation, which provides better scalability and an
1574 improved driver model. Most common drivers have been migrated to
1575 the new TTY subsystem, while others have not. The following
1576 drivers have not yet been ported to the new TTY layer:
1579 cy, digi, rc, rp, sio
1585 ng_h4, ng_tty, ppp, sl, snp
1587 Adding these drivers to your kernel configuration file shall
1588 cause compilation to fail.
1591 ntpd has been upgraded to 4.2.4p5.
1594 OpenSSH has been upgraded to 5.1p1.
1596 For many years, FreeBSD's version of OpenSSH preferred DSA
1597 over RSA for host and user authentication keys. With this
1598 upgrade, we've switched to the vendor's default of RSA over
1599 DSA. This may cause upgraded clients to warn about unknown
1600 host keys even for previously known hosts. Users should
1601 follow the usual procedure for verifying host keys before
1602 accepting the RSA key.
1604 This can be circumvented by setting the "HostKeyAlgorithms"
1605 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
1608 Please note that the sequence of keys offered for
1609 authentication has been changed as well. You may want to
1610 specify IdentityFile in a different order to revert this
1614 The sio(4) driver has been removed from the i386 and amd64
1615 kernel configuration files. This means uart(4) is now the
1616 default serial port driver on those platforms as well.
1618 To prevent collisions with the sio(4) driver, the uart(4) driver
1619 uses different names for its device nodes. This means the
1620 onboard serial port will now most likely be called "ttyu0"
1621 instead of "ttyd0". You may need to reconfigure applications to
1622 use the new device names.
1624 When using the serial port as a boot console, be sure to update
1625 /boot/device.hints and /etc/ttys before booting the new kernel.
1626 If you forget to do so, you can still manually specify the hints
1627 at the loader prompt:
1629 set hint.uart.0.at="isa"
1630 set hint.uart.0.port="0x3F8"
1631 set hint.uart.0.flags="0x10"
1632 set hint.uart.0.irq="4"
1636 The gpt(8) utility has been removed. Use gpart(8) to partition
1640 The version that Linuxulator emulates was changed from 2.4.2
1641 to 2.6.16. If you experience any problems with Linux binaries
1642 please try to set sysctl compat.linux.osrelease to 2.4.2 and
1643 if it fixes the problem contact emulation mailing list.
1646 ISDN4BSD (I4B) was removed from the src tree. You may need to
1647 update a your kernel configuration and remove relevant entries.
1650 I have checked in code to support multiple routing tables.
1651 See the man pages setfib(1) and setfib(2).
1652 This is a hopefully backwards compatible version,
1653 but to make use of it you need to compile your kernel
1654 with options ROUTETABLES=2 (or more up to 16).
1657 The 802.11 wireless support was redone to enable multi-bss
1658 operation on devices that are capable. The underlying device
1659 is no longer used directly but instead wlanX devices are
1660 cloned with ifconfig. This requires changes to rc.conf files.
1661 For example, change:
1662 ifconfig_ath0="WPA DHCP"
1665 ifconfig_wlan0="WPA DHCP"
1666 see rc.conf(5) for more details. In addition, mergemaster of
1667 /etc/rc.d is highly recommended. Simultaneous update of userland
1668 and kernel wouldn't hurt either.
1670 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
1671 modules were merged into the base wlan module. All references
1672 to these modules (e.g. in kernel config files) must be removed.
1675 psm(4) has gained write(2) support in native operation level.
1676 Arbitrary commands can be written to /dev/psm%d and status can
1677 be read back from it. Therefore, an application is responsible
1678 for status validation and error recovery. It is a no-op in
1679 other operation levels.
1682 Support for KSE threading has been removed from the kernel. To
1683 run legacy applications linked against KSE libmap.conf may
1684 be used. The following libmap.conf may be used to ensure
1685 compatibility with any prior release:
1687 libpthread.so.1 libthr.so.1
1688 libpthread.so.2 libthr.so.2
1689 libkse.so.3 libthr.so.3
1692 The layout of struct vmspace has changed. This affects libkvm
1693 and any executables that link against libkvm and use the
1694 kvm_getprocs() function. In particular, but not exclusively,
1695 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
1696 The effects are minimal, but it's advisable to upgrade world
1700 The latest em driver no longer has support in it for the
1701 82575 adapter, this is now moved to the igb driver. The
1702 split was done to make new features that are incompatible
1703 with older hardware easier to do.
1706 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
1707 likewise the kernel option is now GEOM_LINUX_LVM.
1710 The default NFS mount mode has changed from UDP to TCP for
1711 increased reliability. If you rely on (insecurely) NFS
1712 mounting across a firewall you may need to update your
1716 Belatedly note the addition of m_collapse for compacting
1720 The fts(3) structures have been changed to use adequate
1721 integer types for their members and so to be able to cope
1722 with huge file trees. The old fts(3) ABI is preserved
1723 through symbol versioning in libc, so third-party binaries
1724 using fts(3) should still work, although they will not take
1725 advantage of the extended types. At the same time, some
1726 third-party software might fail to build after this change
1727 due to unportable assumptions made in its source code about
1728 fts(3) structure members. Such software should be fixed
1729 by its vendor or, in the worst case, in the ports tree.
1730 FreeBSD_version 800015 marks this change for the unlikely
1731 case that a portable fix is impossible.
1734 To upgrade to -current after this date, you must be running
1735 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
1736 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
1739 The ADAPTIVE_GIANT kernel option has been retired because its
1740 functionality is the default now.
1743 The AT keyboard emulation of sunkbd(4) has been turned on
1744 by default. In order to make the special symbols of the Sun
1745 keyboards driven by sunkbd(4) work under X these now have
1746 to be configured the same way as Sun USB keyboards driven
1747 by ukbd(4) (which also does AT keyboard emulation), f.e.:
1749 Option "XkbLayout" "us"
1750 Option "XkbRules" "xorg"
1751 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
1754 It has been decided that it is desirable to provide ABI
1755 backwards compatibility to the FreeBSD 4/5/6 versions of the
1756 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
1757 broken with the introduction of PCI domain support (see the
1758 20070930 entry). Unfortunately, this required the ABI of
1759 PCIOCGETCONF to be broken again in order to be able to
1760 provide backwards compatibility to the old version of that
1761 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
1762 again. As for prominent ports this affects neither pciutils
1763 nor xorg-server this time, the hal port needs to be rebuilt
1767 The misnamed kthread_create() and friends have been renamed
1768 to kproc_create() etc. Many of the callers already
1769 used kproc_start()..
1770 I will return kthread_create() and friends in a while
1771 with implementations that actually create threads, not procs.
1772 Renaming corresponds with version 800002.
1781 Avoid using make -j when upgrading. While generally safe, there are
1782 sometimes problems using -j to upgrade. If your upgrade fails with
1783 -j, please try again without -j. From time to time in the past there
1784 have been problems using -j with buildworld and/or installworld. This
1785 is especially true when upgrading between "distant" versions (eg one
1786 that cross a major release boundary or several minor releases, or when
1787 several months have passed on the -current branch).
1789 Sometimes, obscure build problems are the result of environment
1790 poisoning. This can happen because the make utility reads its
1791 environment when searching for values for global variables. To run
1792 your build attempts in an "environmental clean room", prefix all make
1793 commands with 'env -i '. See the env(1) manual page for more details.
1795 When upgrading from one major version to another it is generally best
1796 to upgrade to the latest code in the currently installed branch first,
1797 then do an upgrade to the new branch. This is the best-tested upgrade
1798 path, and has the highest probability of being successful. Please try
1799 this approach before reporting problems with a major version upgrade.
1803 When upgrading the boot ZFS pool to a new version, always follow
1806 1.) recompile and reinstall the ZFS boot loader and boot block
1807 (this is part of "make buildworld" and "make installworld")
1809 2.) update the ZFS boot block on your boot drive
1811 The following example updates the ZFS boot block on the first
1812 partition (freebsd-boot) of a GPT partitioned drive ad0:
1813 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
1815 Non-boot pools do not need these updates.
1819 If you are updating from a prior version of FreeBSD (even one just
1820 a few days old), you should follow this procedure. It is the most
1821 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1823 make kernel-toolchain
1824 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1825 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1827 To test a kernel once
1828 ---------------------
1829 If you just want to boot a kernel once (because you are not sure
1830 if it works, or if you want to boot a known bad kernel to provide
1831 debugging information) run
1832 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1833 nextboot -k testkernel
1835 To just build a kernel when you know that it won't mess you up
1836 --------------------------------------------------------------
1837 This assumes you are already running a CURRENT system. Replace
1838 ${arch} with the architecture of your machine (e.g. "i386",
1839 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc).
1841 cd src/sys/${arch}/conf
1842 config KERNEL_NAME_HERE
1843 cd ../compile/KERNEL_NAME_HERE
1848 If this fails, go to the "To build a kernel" section.
1850 To rebuild everything and install it on the current system.
1851 -----------------------------------------------------------
1852 # Note: sometimes if you are running current you gotta do more than
1853 # is listed here if you are upgrading from a really old current.
1855 <make sure you have good level 0 dumps>
1857 make kernel KERNCONF=YOUR_KERNEL_HERE
1859 <reboot in single user> [3]
1867 To cross-install current onto a separate partition
1868 --------------------------------------------------
1869 # In this approach we use a separate partition to hold
1870 # current's root, 'usr', and 'var' directories. A partition
1871 # holding "/", "/usr" and "/var" should be about 2GB in
1874 <make sure you have good level 0 dumps>
1877 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1878 <maybe newfs current's root partition>
1879 <mount current's root partition on directory ${CURRENT_ROOT}>
1880 make installworld DESTDIR=${CURRENT_ROOT}
1881 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1882 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1883 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1884 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1885 <reboot into current>
1886 <do a "native" rebuild/install as described in the previous section>
1887 <maybe install compatibility libraries from ports/misc/compat*>
1891 To upgrade in-place from stable to current
1892 ----------------------------------------------
1893 <make sure you have good level 0 dumps>
1895 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1897 <reboot in single user> [3]
1904 Make sure that you've read the UPDATING file to understand the
1905 tweaks to various things you need. At this point in the life
1906 cycle of current, things change often and you are on your own
1907 to cope. The defaults can also change, so please read ALL of
1908 the UPDATING entries.
1910 Also, if you are tracking -current, you must be subscribed to
1911 freebsd-current@freebsd.org. Make sure that before you update
1912 your sources that you have read and understood all the recent
1913 messages there. If in doubt, please track -stable which has
1914 much fewer pitfalls.
1916 [1] If you have third party modules, such as vmware, you
1917 should disable them at this point so they don't crash your
1920 [3] From the bootblocks, boot -s, and then do
1925 adjkerntz -i # if CMOS is wall time
1926 Also, when doing a major release upgrade, it is required that
1927 you boot into single user mode to do the installworld.
1929 [4] Note: This step is non-optional. Failure to do this step
1930 can result in a significant reduction in the functionality of the
1931 system. Attempting to do it by hand is not recommended and those
1932 that pursue this avenue should read this file carefully, as well
1933 as the archives of freebsd-current and freebsd-hackers mailing lists
1934 for potential gotchas. The -U option is also useful to consider.
1935 See mergemaster(8) for more information.
1937 [5] Usually this step is a noop. However, from time to time
1938 you may need to do this if you get unknown user in the following
1939 step. It never hurts to do it all the time. You may need to
1940 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1941 install) after the buildworld before this step if you last updated
1942 from [78]-stable or 9-stable before 20130430.
1944 [6] This only deletes old files and directories. Old libraries
1945 can be deleted by "make delete-old-libs", but you have to make
1946 sure that no program is using those libraries anymore.
1948 [8] In order to have a kernel that can run the 4.x binaries needed to
1949 do an installworld, you must include the COMPAT_FREEBSD4 option in
1950 your kernel. Failure to do so may leave you with a system that is
1951 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is
1952 required to run the 5.x binaries on more recent kernels. And so on
1953 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7.
1955 Make sure that you merge any new devices from GENERIC since the
1956 last time you updated your kernel config file.
1958 [9] When checking out sources, you must include the -P flag to have
1959 cvs prune empty directories.
1961 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1962 "?=" instead of the "=" assignment operator, so that buildworld can
1963 override the CPUTYPE if it needs to.
1965 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1966 not on the command line, or in /etc/make.conf. buildworld will
1967 warn if it is improperly defined.
1970 This file contains a list, in reverse chronological order, of major
1971 breakages in tracking -current. It is not guaranteed to be a complete
1972 list of such breakages, and only contains entries since October 10, 2007.
1973 If you need to see UPDATING entries from before that date, you will need
1974 to fetch an UPDATING file from an older FreeBSD release.
1976 Copyright information:
1978 Copyright 1998-2009 M. Warner Losh. All Rights Reserved.
1980 Redistribution, publication, translation and use, with or without
1981 modification, in full or in part, in any form or format of this
1982 document are permitted without further permission from the author.
1984 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1985 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1986 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1987 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1988 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1989 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1990 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1991 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1992 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1993 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1994 POSSIBILITY OF SUCH DAMAGE.
1996 Contact Warner Losh if you have any questions about your use of