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 20161222 p53 FreeBSD-SA-16:39.ntp
16 Fix multiple vulnerabilities of ntp.
18 20161208 p52 FreeBSD-SA-16:37.libc [revised]
20 Fix regressions introduced by SA-16:37.libc.
22 20161206 p51 FreeBSD-SA-16:36.telnetd
24 FreeBSD-EN-16:19.tzcode
25 FreeBSD-EN-16:20.tzdata
27 Fix possible login(1) argument injection in telnetd(8). [SA-16:36]
28 Fix link_ntoa(3) buffer overflow in libc. [SA-16:37]
29 Fix warnings about valid time zone abbreviations. [EN-16:19]
30 Update timezone database information. [EN-16:20]
32 20161102 p50 FreeBSD-SA-16:34.bind
33 FreeBSD-SA-16:35.openssl
35 Fix BIND remote Denial of Service vulnerability. [SA-16:34]
37 Fix OpenSSL remote DoS vulnerability. [SA-16:35]
39 20161025 p49 FreeBSD-SA-16:15.sysarch [revised]
41 Fix incorrect argument validation in sysarch(2). [SA-16:15]
43 20161010 p48 FreeBSD-SA-16:28.bind
44 FreeBSD-SA-16:29.bspatch
45 FreeBSD-SA-16:30.portsnap
47 Fix BIND remote Denial of Service vulnerability. [SA-16:28]
49 Fix bspatch heap overflow vulnerability. [SA-16:29]
51 Fix multiple portsnap vulnerabilities. [SA-16:30]
53 20160926 p47 FreeBSD-SA-16:26.openssl [revised]
55 Fix OpenSSL regression introduced in SA-16:26.
57 20160923 p46 FreeBSD-SA-16:26.openssl
59 Fix multiple OpenSSL vulnerabilitites.
61 20160725 p45 FreeBSD-SA-16:25.bspatch
62 FreeBSD-EN-16:09.freebsd-update
64 Fix bspatch heap overflow vulnerability. [SA-16:25]
66 Fix freebsd-update(8) support of FreeBSD 11.0 release
67 distribution. [EN-16:09]
69 20160604 p44 FreeBSD-SA-16:24.ntp
71 Fix multiple vulnerabilities of ntp.
73 20160531 p43 FreeBSD-SA-16:20.linux
74 FreeBSD-SA-16:21.43bsd
75 FreeBSD-SA-16:22.libarchive
76 FreeBSD-SA-16:23.libarchive
78 Fix kernel stack disclosure in Linux compatibility layer. [SA-16:20]
79 Fix kernel stack disclosure in 4.3BSD compatibility layer. [SA-16:21]
80 Fix directory traversal in cpio(1). [SA-16:22]
81 Fix buffer overflow in libarchive(3). [SA-16:23]
83 20160517 p42 FreeBSD-SA-16:18.atkbd
85 Fix buffer overflow in keyboard driver. [SA-16:18]
87 20160504 p41 FreeBSD-SA-16:17.openssl
90 Fix multiple OpenSSL vulnerabilitites. [SA-16:17]
92 Fix memory leak in ZFS. [EN-16:08]
94 20160429 p40 FreeBSD-SA-16:16.ntp
96 Fix multiple vulnerabilities of ntp.
98 20160316 p39 FreeBSD-SA-16:14.openssh-xauth
99 FreeBSD-SA-16:15.sysarch
101 Fix OpenSSH xauth(1) command injection. [SA-16:14]
102 Fix incorrect argument validation in sysarch(2). [SA-16:15]
104 20160310 p38 FreeBSD-SA-16:13.bind
105 FreeBSD-SA-16:12.openssl [revised]
107 Fix multiple vulnerabilities of BIND. [SA-16:13]
109 Fix a regression with OpenSSL patch. [SA-16:12]
111 20160303 p37 FreeBSD-SA-16:12.openssl
113 Fix multiple vulnerabilities of OpenSSL.
115 20160130 p36 FreeBSD-SA-16:11.openssl
117 Fix OpenSSL SSLv2 ciphersuite downgrade vulnerability. [SA-16:11]
119 20160127 p35 FreeBSD-SA-16:08.bind
121 FreeBSD-SA-16:10.linux
123 Fix BIND remote denial of service vulnerability. [SA-16:08]
125 Fix multiple vulnerabilities of ntp. [SA-16:09]
127 Fix Linux compatibility layer issetugid(2) system call
128 vulnerability. [SA-16:10]
130 20160114 p34 FreeBSD-SA-16:07.openssh
132 Fix OpenSSH client information leak. [SA-16:07]
134 20160114 p33 FreeBSD-EN-16:02.pf
135 FreeBSD-EN-16:03.yplib
136 FreeBSD-SA-16:01.sctp
138 FreeBSD-SA-16:03.linux
139 FreeBSD-SA-16:04.linux
141 FreeBSD-SA-16:06.bsnmpd
143 Fix pf(4) generating bad TCP checksums. [EN-16:02]
144 Fix infinite loop in YP/NIS client library. [EN-16:03]
145 Fix remote denial of service in SCTP. [SA-16:01]
146 Update NTP to 4.2.8p5. [SA-16:02]
147 Fix kernel memory diclosure in Linux compatibility layer. [SA-16:03]
148 Fix kernel memory overwrite in Linux compatibility layer. [SA-16:04]
149 Fix crash in TCP MD5 signatures. [SA-16:05]
150 Fix insecure default permissions for snmpd.config. [SA-16:06]
152 20151216 p32 FreeBSD-SA-15:27.bind
153 Fix BIND remote denial of service vulnerability. [SA-15:27]
155 20151205 p31 FreeBSD-SA-15:26.openssl
157 Fix OpenSSL X509_ATTRIBUTE memory leak. [SA-15:26]
159 20151104 p30 FreeBSD-SA-15:25.ntp [revised]
160 FreeBSD-EN-15:19.kqueue
163 Fix regression of ntpq(8) utility exiting due to trap 6 in
164 9.3-RELEASE-p29. [SA-15:25]
166 Fix regression in ntpd(8) lacking support for RAWDCF reference
167 clock in 9.3-RELEASE-p29. [SA-15:25]
169 Fix kqueue write events never fired for files greater 2GB. [EN-15:19]
171 Fix applications exiting due to segmentation violation on a correct
172 memory address. [EN-15:20]
174 20151026: p29 FreeBSD-SA-15:25.ntp
176 Fix multiple NTP vulnerabilities. New NTP version is 4.2.8p4.
178 The configuration file syntax has been changed, thus mergemaster
179 run is recommended. Now the "kod" parameter requires "limited"
180 parameter. If the ntp.conf is not updated, the ntpd will run
181 successfully, but with KoD disabled.
183 20151002: p28 FreeBSD-SA-15:24.rpcbind [revised]
184 Revised patch to address a regression that prevents NIS from working.
186 20150929: p27 FreeBSD-SA-15:24.rpcbind
188 Fix rpcbind(8) remote denial of service. [SA-15:24]
190 20150916: p26 FreeBSD-EN-15:18.pkg
192 Implement pubkey support for pkg(7) bootstrap. [EN-15:18]
194 20150902: p25 FreeBSD-SA-15:23.bind
196 Fix BIND remote denial of service vulnerability. [SA-15:23]
198 20150825: p24 FreeBSD-SA-15:21.amd64
199 FreeBSD-SA-15:22.openssh
202 Fix local privilege escalation in IRET handler. [SA-15:21]
204 Fix OpenSSH multiple vulnerabilities. [SA-15:22]
206 Fix insufficient check of unsupported pkg(7) signature methods.
209 20150818: p23 FreeBSD-SA-15:20.expat
211 Fix multiple integer overflows in expat (libbsdxml) XML parser.
214 20150805: p22 FreeBSD-SA-15:19.routed
216 Fix routed remote denial of service vulnerability.
218 20150728: p21 FreeBSD-SA-15:15.tcp
219 FreeBSD-SA-15:16.openssh
220 FreeBSD-SA-15:17.bind
222 Fix resource exhaustion in TCP reassembly. [SA-15:15]
224 Fix OpenSSH multiple vulnerabilities. [SA-15:16]
226 Fix BIND remote denial of service vulnerability. [SA-15:17]
228 20150721: p20 FreeBSD-SA-15:13.tcp
230 Fix resource exhaustion due to sessions stuck in LAST_ACK state.
233 20150707: p19 FreeBSD-SA-15:11.bind
234 Fix BIND resolver remote denial of service when validating.
236 20150630: p18 FreeBSD-EN-15:08.sendmail [revised]
237 FreeBSD-EN-15:09.xlocale
239 Improvements to sendmail TLS/DH interoperability. [EN-15:08]
241 Fix inconsistency between locale and rune locale states.
244 20150618: p17 FreeBSD-EN-15:08.sendmail
245 Improvements to sendmail TLS/DH interoperability. [EN-15:08]
247 20150612: p16 FreeBSD-SA-15:10.openssl
248 Fix multiple vulnerabilities in OpenSSL. [SA-15:10]
250 20150609: p15 FreeBSD-EN-15:06.file
252 Updated base system file(1) to 5.22 to address multiple denial
255 20150513: p14 FreeBSD-EN-15:04.freebsd-update
257 Fix bug with freebsd-update(8) that does not ensure the previous
258 upgrade was completed. [EN-15:04]
260 20150407: p13 FreeBSD-SA-15:04.igmp [revised]
262 FreeBSD-SA-15:09.ipv6
264 Improved patch for SA-15:04.igmp.
266 Fix multiple vulnerabilities of ntp. [SA-15:07]
268 Fix Denial of Service with IPv6 Router Advertisements. [SA-15:09]
271 Fix patch for SA-15:06.openssl.
273 20150319: p11 FreeBSD-SA-15:06.openssl
274 Fix multiple vulnerabilities in OpenSSL. [SA-15:06]
276 20150225: p10 FreeBSD-SA-15:04.igmp
277 FreeBSD-SA-15:05.bind
279 FreeBSD-EN-15:02.openssl
280 FreeBSD-EN-15:03.freebsd-update
282 Fix integer overflow in IGMP protocol. [SA-15:04]
284 Fix BIND remote denial of service vulnerability. [SA-15:05]
286 Fix vt(4) crash with improper ioctl parameters. [EN-15:01]
288 Updated base system OpenSSL to 0.9.8zd. [EN-15:02]
290 Fix freebsd-update libraries update ordering issue. [EN-15:03]
292 20150127: p9 FreeBSD-SA-15:02.kmem
293 FreeBSD-SA-15:03.sctp
295 Fix SCTP SCTP_SS_VALUE kernel memory corruption and disclosure
296 vulnerability. [SA-15:02]
298 Fix SCTP stream reset vulnerability. [SA-15:03]
300 20150114: p8 FreeBSD-SA-15:01.openssl
301 Fix multiple vulnerabilities in OpenSSL. [SA-15:01]
303 20141223: p7 FreeBSD-SA-14:31.ntp
304 FreeBSD-EN-14:13.freebsd-update
306 Fix multiple vulnerabilities in NTP suite. [SA-14:31]
307 Fix directory deletion issue in freebsd-update. [EN-14:13]
309 20141210: p6 FreeBSD-SA-14:28.file
310 FreeBSD-SA-14:29.bind
312 Fix multiple vulnerabilities in file(1) and libmagic(3).
315 Fix BIND remote denial of service vulnerability. [SA-14:29]
317 20141104: p5 FreeBSD-SA-14:25.setlogin
321 Fix kernel stack disclosure in setlogin(2) / getlogin(2).
324 Fix remote command execution in ftp(1). [SA-14:26]
326 Fix NFSv4 and ZFS cache consistency issue. [EN-14:12]
328 20141022: p4 FreeBSD-EN-14:10.tzdata
329 FreeBSD-EN-14:11.crypt
331 Time zone data file update. [EN-14:10]
333 Change crypt(3) default hashing algorithm back to DES. [EN-14:11]
335 20141021: p3 FreeBSD-SA-14:20.rtsold
336 FreeBSD-SA-14:21.routed
337 FreeBSD-SA-14:22.namei
338 FreeBSD-SA-14:23.openssl
340 Fix rtsold(8) remote buffer overflow vulnerability. [SA-14:20]
342 Fix routed(8) remote denial of service vulnerability. [SA-14:21]
344 Fix memory leak in sandboxed namei lookup. [SA-14:22]
346 Fix OpenSSL multiple vulnerabilities. [SA-14:23]
348 20140916: p2 FreeBSD-SA-14:19.tcp
349 Fix Denial of Service in TCP packet processing. [SA-14:19]
351 20140909: p1 FreeBSD-SA-14:18.openssl
352 Fix OpenSSL multiple vulnerabilities. [SA-14:18]
358 On i386 and amd64 systems, the onifconsole flag is now set by default
359 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled
360 as a login TTY if it is set in the bootloader as an active kernel
361 console. No changes in behavior should result otherwise. To revert to
362 the previous behavior, set ttyu0 to "off" in /etc/ttys.
365 Clang and llvm have been upgraded to 3.4.1 release.
368 Clang and llvm have been upgraded to 3.4 release.
371 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has
372 been deprecated and will not be part of FreeBSD 11.0 and later
373 releases. If you use this driver, please consider switching to
374 the nfe(4) driver instead.
377 The behavior of gss_pseudo_random() for the krb5 mechanism
378 has changed, for applications requesting a longer random string
379 than produced by the underlying enctype's pseudo-random() function.
380 In particular, the random string produced from a session key of
381 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will
382 be different at the 17th octet and later, after this change.
383 The counter used in the PRF+ construction is now encoded as a
384 big-endian integer in accordance with RFC 4402.
385 __FreeBSD_version is bumped to 902505.
391 Behavior of devfs rules path matching has been changed.
392 Pattern is now always matched against fully qualified devfs
393 path and slash characters must be explicitly matched by
394 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs
395 subdirectories must be reviewed.
398 hastctl(8)'s `status' command output changed to terse one-liner format.
399 Scripts using this should switch to `list' command or be rewritten.
402 Fix a bug that allowed a tracing process (e.g. gdb) to write
403 to a memory-mapped file in the traced process's address space
404 even if neither the traced process nor the tracing process had
405 write access to that file.
408 Added ZFS TRIM support which is enabled by default. To disable
409 ZFS TRIM support set vfs.zfs.trim.enabled=0 in loader.conf.
411 Creating new ZFS pools and adding new devices to existing pools
412 first performs a full device level TRIM which can take a significant
413 amount of time. The sysctl vfs.zfs.vdev.trim_on_init can be set to 0
414 to disable this behaviour.
416 ZFS TRIM requires the underlying device support BIO_DELETE which
417 is currently provided by methods such as ATA TRIM and SCSI UNMAP
418 via CAM, which are typically supported by SSD's.
420 Stats for ZFS TRIM can be monitored by looking at the sysctl's
421 under kstat.zfs.misc.zio_trim.
424 `list' command has been added to hastctl(8). For now, it is full
425 equivalent of `status' command.
426 WARNING: in the near future the output of hastctl's status command
427 will change to more terse format. If you use `hastctl status'
428 for parsing in your scripts, switch to `hastctl list'.
431 The mergemaster command now uses the default MAKEOBJDIRPREFIX
432 rather than creating it's own in the temporary directory in
433 order allow access to bootstrapped versions of tools such as
434 install and mtree. When upgrading from version of FreeBSD where
435 the install command does not support -l, you will need to
436 install a new mergemaster command if mergemaster -p is required.
437 This can be accomplished with the command (cd src/usr.sbin/mergemaster
440 Due to the use of the new -l option to install(1) during build
441 and install, you must take care not to directly set the INSTALL
442 make variable in your /etc/make.conf, /etc/src.conf, or on the
443 command line. If you wish to use the -C flag for all installs
444 you may be able to add INSTALL+=-C to /etc/make.conf or
448 Fix a bug that allows NFS clients to issue READDIR on files.
451 The install(1) option -M has changed meaning and now takes an
452 argument that is a file or path to append logs to. In the
453 unlikely event that -M was the last option on the command line
454 and the command line contained at least two files and a target
455 directory the first file will have logs appended to it. The -M
456 option served little practical purpose in the last decade so it's
457 used expected to be extremely rare.
460 A new compression method (lz4) has been merged to. Please refer to
461 zpool-features(7) for more information.
463 Please refer to the "ZFS notes" section of this file for information
464 on upgrading boot ZFS pools.
467 The VFS KBI was changed with the merge of several nullfs
468 optimizations and fixes. All filesystem modules must be
472 With the addition of auditdistd(8), a new auditdistd user is now
473 depended on during installworld. "mergemaster -p" can be used to add
474 the user prior to installworld, as documented in the handbook.
480 A new version of ZFS (pool version 5000) has been merged to 9-STABLE.
481 Starting with this version the old system of ZFS pool versioning
482 is superseded by "feature flags". This concept enables forward
483 compatibility against certain future changes in functionality of ZFS
484 pools. The first two read-only compatible "feature flags" for ZFS
485 pools are "com.delphix:async_destroy" and "com.delphix:empty_bpobj".
486 For more information read the new zpool-features(7) manual page.
487 Please refer to the "ZFS notes" section of this file for information
488 on upgrading boot ZFS pools.
491 The commit introducing bsd.compiler.mk breaks the traditional
492 building of kernels before this point. Add -m ${SRC}/share/mk
493 (for the right value of SRC) to your command lines to work
494 around; update your useland to a point after this; or use the
495 buildkernel/installkernel top-level targets. See also 20120829.
498 The IPFIREWALL_FORWARD kernel option has been removed. Its
499 functionality now turned on by default.
502 The random(4) support for the VIA hardware random number
503 generator (`PADLOCK') is no longer enabled unconditionally.
504 Add the PADLOCK_RNG option in the custom kernel config if
505 needed. The GENERIC kernels on i386 and amd64 do include the
506 option, so the change only affects the custom kernel
510 The amd64 kernel now uses xsetbv, xrstor instructions. To compile with
511 the traditional method, you must update your system with an installworld
512 before the kernel will build. The documented make buildkernel/installkernel
513 interfaces (coupled with fresh make kernel-toolchain) continue to work.
516 The sparc64 ZFS loader has been changed to no longer try to auto-
517 detect ZFS providers based on diskN aliases but now requires these
518 to be explicitly listed in the OFW boot-device environment variable.
521 Now unix domain sockets behave "as expected" on nullfs(5). Previously
522 nullfs(5) did not pass through all behaviours to the underlying layer,
523 as a result if we bound to a socket on the lower layer we could connect
524 only to the lower path; if we bound to the upper layer we could connect
525 only to the upper path. The new behavior is one can connect to both the
526 lower and the upper paths regardless what layer path one binds to.
529 The acpi_wmi(4) status device /dev/wmistat has been renamed to
533 A new VOP_ADVISE() was added to support posix_fadvise(2). All
534 filesystem modules must be recompiled.
537 The interface of the VOP_VPTOCNP(9) changed, now the returned
538 vnode shall be referenced, previously it was required to be
539 only held. All in-tree filesystems are converted.
545 The broken amd(4) driver has been replaced with esp(4) in the amd64,
546 i386 and pc98 GENERIC kernel configuration files.
549 This commit modifies vfs_register() so that it uses a hash
550 calculation to set vfc_typenum, which is enabled by default.
551 The first time a system is booted after this change, the
552 vfc_typenum values will change for all file systems. The
553 main effect of this is a change to the NFS server file handles
554 for file systems that use vfc_typenum in their fsid, such as ZFS.
555 It will, however, prevent vfc_typenum from changing when file
556 systems are loaded in a different order for subsequent reboots.
557 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf
558 until you are ready to remount all NFS clients after a reboot.
561 Bump the shared library version numbers for libraries that
562 do not use symbol versioning, have changed the ABI compared
563 to stable/8 and which shared library version was not bumped.
564 Done as part of 9.0-RELEASE cycle.
567 During the merge of Capsicum features, the fget(9) KPI was modified.
568 This may require the rebuilding of out-of-tree device drivers --
569 issues have been reported specifically with the nVidia device driver.
570 __FreeBSD_version is bumped to 900041.
572 Also, there is a period between 20110811 and 20110814 where the
573 special devices /dev/{stdin,stdout,stderr} did not work correctly.
574 Building world from a kernel during that window may not work.
577 The packet filter (pf) code has been updated to OpenBSD 4.5.
578 You need to update userland tools to be in sync with kernel.
579 This update breaks backward compatibility with earlier pfsync(4)
580 versions. Care must be taken when updating redundant firewall setups.
583 The following sysctls and tunables are retired on x86 platforms:
585 machdep.hlt_logical_cpus
586 The following sysctl is retired:
587 machdep.hyperthreading_allowed
588 The sysctls were supposed to provide a way to dynamically offline and
589 online selected CPUs on x86 platforms, but the implementation has not
590 been reliable especially with SCHED_ULE scheduler.
591 machdep.hyperthreading_allowed tunable is still available to ignore
592 hyperthreading CPUs at OS level.
593 Individual CPUs can be disabled using hint.lapic.X.disabled tunable,
594 where X is an APIC ID of a CPU. Be advised, though, that disabling
595 CPUs in non-uniform fashion will result in non-uniform topology and
596 may lead to sub-optimal system performance with SCHED_ULE, which is
600 cpumask_t type is retired and cpuset_t is used in order to describe
604 Changes to ifconfig(8) for dynamic address family detection mandate
605 that you are running a kernel of 20110525 or later. Make sure to
606 follow the update procedure to boot a new kernel before installing
610 Support for sun4v architecture is officially dropped
613 Several KPI breaking changes have been committed to the mii(4) layer,
614 the PHY drivers and consequently some Ethernet drivers using mii(4).
615 This means that miibus.ko and the modules of the affected Ethernet
616 drivers need to be recompiled.
618 Note to kernel developers: Given that the OUI bit reversion problem
619 was fixed as part of these changes all mii(4) commits related to OUIs,
620 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific
621 handling, no longer can be merged verbatim to stable/8 and previous
625 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci'
626 into their kernel configurations along with 'device pci'.
629 The default NFS client is now the new NFS client, so fstype "newnfs"
630 is now "nfs" and the regular/old NFS client is now fstype "oldnfs".
631 Although mounts via fstype "nfs" will usually work without userland
632 changes, it is recommended that the mount(8) and mount_nfs(8)
633 commands be rebuilt from sources and that a link to mount_nfs called
634 mount_oldnfs be created. The new client is compiled into the
635 kernel with "options NFSCL" and this is needed for diskless root
636 file systems. The GENERIC kernel configs have been changed to use
637 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER.
638 To use the regular/old client, you can "mount -t oldnfs ...". For
639 a diskless root file system, you must also include a line like:
641 vfs.root.mountfrom="oldnfs:"
643 in the boot/loader.conf on the root fs on the NFS server to make
644 a diskless root fs use the old client.
647 The GENERIC kernels for all architectures now default to the new
648 CAM-based ATA stack. It means that all legacy ATA drivers were
649 removed and replaced by respective CAM drivers. If you are using
650 ATA device names in /etc/fstab or other places, make sure to update
651 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY,
652 where 'Y's are the sequential numbers starting from zero for each type
653 in order of detection, unless configured otherwise with tunables,
654 see cam(4)). There will be symbolic links created in /dev/ to map
655 old adX devices to the respective adaY. They should provide basic
656 compatibility for file systems mounting in most cases, but they do
657 not support old user-level APIs and do not have respective providers
658 in GEOM. Consider using updated management tools with new device names.
660 It is possible to load devices ahci, ata, siis and mvs as modules,
661 but option ATA_CAM should remain in kernel configuration to make ata
662 module work as CAM driver supporting legacy ATA controllers. Device ata
663 still can be used in modular fashion (atacore + ...). Modules atadisk
664 and atapi* are not used and won't affect operation in ATA_CAM mode.
665 Note that to use CAM-based ATA kernel should include CAM devices
666 scbus, pass, da (or explicitly ada), cd and optionally others. All of
667 them are parts of the cam module.
669 ataraid(4) functionality is now supported by the RAID GEOM class.
670 To use it you can load geom_raid kernel module and use graid(8) tool
671 for management. Instead of /dev/arX device names, use /dev/raid/rX.
673 No kernel config options or code have been removed, so if a problem
674 arises, please report it and optionally revert to the old ATA stack.
675 In order to do it you can remove from the kernel config:
680 , and instead add back:
681 device atadisk # ATA disk drives
682 device ataraid # ATA RAID drives
683 device atapicd # ATAPI CDROM drives
684 device atapifd # ATAPI floppy drives
685 device atapist # ATAPI tape drives
688 The default NFS server has been changed to the new server, which
689 was referred to as the experimental server. If you need to switch
690 back to the old NFS server, you must now put the "-o" option on
691 both the mountd and nfsd commands. This can be done using the
692 mountd_flags and nfs_server_flags rc.conf variables until an
693 update to the rc scripts is committed, which is coming soon.
696 The GNU Objective-C runtime library (libobjc), and other Objective-C
697 related components have been removed from the base system. If you
698 require an Objective-C library, please use one of the available ports.
701 ath(4) has been split into bus- and device- modules. if_ath contains
702 the HAL, the TX rate control and the network device code. if_ath_pci
703 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb
704 contains the AHB glue. Users need to load both if_ath_pci and if_ath
705 in order to use ath on everything else.
707 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only
708 need to load if_ath and if_ath_pci for ath(4) operation.
711 As part of the replacement of sysinstall, the process of building
712 release media has changed significantly. For details, please re-read
713 release(7), which has been updated to reflect the new build process.
716 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This
717 is the last available version under GPLv2. It brings a number of new
718 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE
719 4.1 and SSE 4.2), better support for powerpc64, a number of new
720 directives, and lots of other small improvements. See the ChangeLog
721 file in contrib/binutils for the full details.
724 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868
725 compliant, and will now use half of hash for authentication.
726 This will break interoperability with all stacks (including all
727 actual FreeBSD versions) who implement
728 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for
730 The only workaround with such peers is to use another HMAC
731 algorithm for IPsec ("phase 2") authentication.
734 Remove the uio_yield prototype and symbol. This function has
735 been misnamed since it was introduced and should not be
736 globally exposed with this name. The equivalent functionality
737 is now available using kern_yield(curthread->td_user_pri).
738 The function remains undocumented.
741 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers,
742 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking
743 for scalar sysctls is defined but disabled. Code that needs
744 UQUAD to pass the type checking that must compile on older
745 systems where the define is not present can check against
746 __FreeBSD_version >= 900030.
748 The system dialog(1) has been replaced with a new version previously
749 in ports as devel/cdialog. dialog(1) is mostly command-line compatible
750 with the previous version, but the libdialog associated with it has
751 a largely incompatible API. As such, the original version of libdialog
752 will be kept temporarily as libodialog, until its base system consumers
753 are replaced or updated. Bump __FreeBSD_version to 900030.
756 If you are trying to run make universe on a -stable system, and you get
757 the following warning:
758 "Makefile", line 356: "Target architecture for i386/conf/GENERIC
759 unknown. config(8) likely too old."
760 or something similar to it, then you must upgrade your -stable system
761 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in
762 stable/8) or build the config from the latest stable/8 branch and
763 install it on your system.
765 Prior to this date, building a current universe on 8-stable system from
766 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing
767 error in the first kernel build phase. A new config on those old
768 systems will fix that problem for older versions of -current.
771 The TCP stack has been modified to allow Khelp modules to interact with
772 it via helper hook points and store per-connection data in the TCP
773 control block. Bump __FreeBSD_version to 900029. User space tools that
774 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to
778 Generic IEEE 802.3 annex 31B full duplex flow control support has been
779 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along
780 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted
781 to take advantage of it instead of using custom implementations. This
782 means that these drivers now no longer unconditionally advertise
783 support for flow control but only do so if flow control is a selected
784 media option. This was implemented in the generic support that way in
785 order to allow flow control to be switched on and off via ifconfig(8)
786 with the PHY specific default to typically off in order to protect
787 from unwanted effects. Consequently, if you used flow control with
788 one of the above mentioned drivers you now need to explicitly enable
790 ifconfig bge0 media auto mediaopt flowcontrol
792 Along with the above mentioned changes generic support for setting
793 1000baseT master mode also has been added and brgphy(4), ciphy(4),
794 e1000phy(4) as well as ip1000phy(4) have been converted to take
795 advantage of it. This means that these drivers now no longer take the
796 link0 parameter for selecting master mode but the master media option
797 has to be used instead, for example like in the following:
798 ifconfig bge0 media 1000baseT mediaopt full-duplex,master
800 Selection of master mode now is also available with all other PHY
801 drivers supporting 1000baseT.
804 The TCP stack has received a significant update to add support for
805 modularised congestion control and generally improve the clarity of
806 congestion control decisions. Bump __FreeBSD_version to 900025. User
807 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g.
808 sockstat) need to be recompiled.
811 The man(1) utility has been replaced by a new version that no longer
812 uses /etc/manpath.config. Please consult man.conf(5) for how to
813 migrate local entries to the new format.
816 The copyright strings printed by login(1) and sshd(8) at the time of a
817 new connection have been removed to follow other operating systems and
821 A workaround for a fixed ld bug has been removed in kernel code,
822 so make sure that your system ld is built from sources after
823 revision 210245 from 2010-07-19 (r211583 if building head kernel
824 on stable/8, r211584 for stable/7; both from 2010-08-21).
825 A symptom of incorrect ld version is different addresses for
826 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules.
829 The $ipv6_prefer variable in rc.conf(5) has been split into
830 $ip6addrctl_policy and $ipv6_activate_all_interfaces.
832 The $ip6addrctl_policy is a variable to choose a pre-defined
833 address selection policy set by ip6addrctl(8). A value
834 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The
837 The $ipv6_activate_all_interfaces specifies whether IFDISABLED
838 flag (see an entry of 20090926) is set on an interface with no
839 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for
840 security reason. If you want IPv6 link-local address on all
841 interfaces by default, set this to "YES".
843 The old ipv6_prefer="YES" is equivalent to
844 ipv6_activate_all_interfaces="YES" and
845 ip6addrctl_policy="ipv6_prefer".
848 DTrace has grown support for userland tracing. Due to this, DTrace is
849 now i386 and amd64 only.
850 dtruss(1) is now installed by default on those systems and a new
851 kernel module is needed for userland tracing: fasttrap.
852 No changes to your kernel config file are necessary to enable
853 userland tracing, but you might consider adding 'STRIP=' and
854 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want
855 to have informative userland stack traces in DTrace (ustack).
858 The acpi_aiboost(4) driver has been removed in favor of the new
859 aibs(4) driver. You should update your kernel configuration file.
862 BSD grep has been imported to the base system and it is built by
863 default. It is completely BSD licensed, highly GNU-compatible, uses
864 less memory than its GNU counterpart and has a small codebase.
865 However, it is slower than its GNU counterpart, which is mostly
866 noticeable for larger searches, for smaller ones it is measurable
867 but not significant. The reason is complex, the most important factor
868 is that we lack a modern and efficient regex library and GNU
869 overcomes this by optimizing the searches internally. Future work
870 on improving the regex performance is planned, for the meantime,
871 users that need better performance, can build GNU grep instead by
872 setting the WITH_GNU_GREP knob.
875 Due to the import of powerpc64 support, all existing powerpc kernel
876 configuration files must be updated with a machine directive like this:
877 machine powerpc powerpc
879 In addition, an updated config(8) is required to build powerpc kernels
883 A new version of ZFS (version 15) has been merged to -HEAD.
884 This version uses a python library for the following subcommands:
885 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
886 For full functionality of these commands the following port must
887 be installed: sysutils/py-zfs
890 'vm_page's are now hashed by physical address to an array of mutexes.
891 Currently this is only used to serialize access to hold_count. Over
892 time the page queue mutex will be peeled away. This changes the size
893 of pmap on every architecture. And requires all callers of vm_page_hold
894 and vm_page_unhold to be updated.
897 WITH_CTF can now be specified in src.conf (not recommended, there
898 are some problems with static executables), make.conf (would also
899 affect ports which do not use GNU make and do not override the
900 compile targets) or in the kernel config (via "makeoptions
902 When WITH_CTF was specified there before this was silently ignored,
903 so make sure that WITH_CTF is not used in places which could lead
904 to unwanted behavior.
907 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
908 to allow 32-bit compatibility on non-x86 platforms. All kernel
909 configurations on amd64 and ia64 platforms using these options must
910 be modified accordingly.
913 The utmp user accounting database has been replaced with utmpx,
914 the user accounting interface standardized by POSIX.
915 Unfortunately the semantics of utmp and utmpx don't match,
916 making it practically impossible to support both interfaces.
917 The user accounting database is used by tools like finger(1),
918 last(1), talk(1), w(1) and ac(8).
920 All applications in the base system use utmpx. This means only
921 local binaries (e.g. from the ports tree) may still use these
922 utmp database files. These applications must be rebuilt to make
925 After the system has been upgraded, it is safe to remove the old
926 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*),
927 assuming their contents is of no importance anymore. Old wtmp
928 databases can only be used by last(1) and ac(8) after they have
929 been converted to the new format using wtmpcvt(1).
932 Introduce the kernel thread "deadlock resolver" (which can be enabled
933 via the DEADLKRES option, see NOTES for more details) and the
934 sleepq_type() function for sleepqueues.
937 The rc.firewall and rc.firewall6 were unified, and
938 rc.firewall6 and rc.d/ip6fw were removed.
939 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
940 variables are obsoleted. Instead, the following new rc
941 variables are added to rc.d/ipfw:
943 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
944 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
945 firewall_simple_onet_ipv6, firewall_trusted_ipv6
947 The meanings correspond to the relevant IPv4 variables.
953 The default terminal emulation for syscons(4) has been changed
954 from cons25 to xterm on all platforms except pc98. This means
955 that the /etc/ttys file needs to be updated to ensure correct
956 operation of applications on the console.
958 The terminal emulation style can be toggled per window by using
959 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration
960 options can be used to change the compile-time default back to
963 To prevent graphical artifacts, make sure the TERM environment
964 variable is set to match the terminal emulation that is being
965 performed by syscons(4).
968 The layout of the structure ieee80211req_scan_result has changed.
969 Applications that require wireless scan results (e.g. ifconfig(8))
970 from net80211 need to be recompiled.
972 Applications such as wpa_supplicant(8) may require a full world
973 build without using NO_CLEAN in order to get synchronized with the
977 The iwn(4) driver has been updated to support the 5000 and 5150 series.
978 There's one kernel module for each firmware. Adding "device iwnfw"
979 to the kernel configuration file means including all three firmware
980 images inside the kernel. If you want to include just the one for
981 your wireless card, use the devices iwn4965fw, iwn5000fw or
985 The rc.d/network_ipv6, IPv6 configuration script has been integrated
986 into rc.d/netif. The changes are the following:
988 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF
989 for IPv4. For aliases, $ifconfig_IF_aliasN should be used.
990 Note that both variables need the "inet6" keyword at the head.
992 Do not set $ipv6_network_interfaces manually if you do not
993 understand what you are doing. It is not needed in most cases.
995 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but
998 2. $ipv6_enable is obsolete. Use $ipv6_prefer and
999 "inet6 accept_rtadv" keyword in ifconfig(8) instead.
1001 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and
1002 all configured interfaces have "inet6 accept_rtadv" in the
1003 $ifconfig_IF_ipv6. These are for backward compatibility.
1005 3. A new variable $ipv6_prefer has been added. If NO, IPv6
1006 functionality of interfaces with no corresponding
1007 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag,
1008 and the default address selection policy of ip6addrctl(8)
1009 is the IPv4-preferred one (see rc.d/ip6addrctl for more details).
1010 Note that if you want to configure IPv6 functionality on the
1011 disabled interfaces after boot, first you need to clear the flag by
1012 using ifconfig(8) like:
1014 ifconfig em0 inet6 -ifdisabled
1016 If YES, the default address selection policy is set as
1019 The default value of $ipv6_prefer is NO.
1021 4. If your system need to receive Router Advertisement messages,
1022 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8)
1023 scripts automatically invoke rtsol(8) when the interface becomes
1024 UP. The Router Advertisement messages are used for SLAAC
1025 (State-Less Address AutoConfiguration).
1028 802.11s D3.03 support was committed. This is incompatible with the
1029 previous code, which was based on D3.0.
1032 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value
1033 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to
1034 control whether accepting Router Advertisement messages or not.
1035 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and
1036 a sysctl variable net.inet6.ip6.auto_linklocal is its default value.
1037 The ifconfig(8) utility now supports these flags.
1040 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
1041 mount(8) and -a option for df(1) to see them.
1044 The old tunable hw.bus.devctl_disable has been superseded by
1045 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be
1046 replaced by hw.bus.devctl_queue=0. The default for this new tunable
1050 Remove the option STOP_NMI. The default action is now to use NMI only
1051 for KDB via the newly introduced function stop_cpus_hard() and
1052 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64.
1055 The stable/8 branch created in subversion. This corresponds to the
1056 RELENG_8 branch in CVS.
1059 Bump the shared library version numbers for all libraries that do not
1060 use symbol versioning as part of the 8.0-RELEASE cycle. Bump
1061 __FreeBSD_version to 800105.
1064 Due to changes in the implementation of virtual network stack support,
1065 all network-related kernel modules must be recompiled. As this change
1066 breaks the ABI, bump __FreeBSD_version to 800104.
1069 The TOE interface to the TCP syncache has been modified to remove
1070 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack.
1071 The cxgb driver is the only TOE consumer affected by this change, and
1072 needs to be recompiled along with the kernel. As this change breaks
1073 the ABI, bump __FreeBSD_version to 800103.
1076 Padding has been added to struct tcpcb, sackhint and tcpstat in
1077 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
1078 maintaining the ABI. However, this change breaks the ABI, so bump
1079 __FreeBSD_version to 800102. User space tools that rely on the size of
1080 any of these structs (e.g. sockstat) need to be recompiled.
1083 The NFS_LEGACYRPC option has been removed along with the old kernel
1084 RPC implementation that this option selected. Kernel configurations
1085 may need to be adjusted.
1088 The network interface device nodes at /dev/net/<interface> have been
1089 removed. All ioctl operations can be performed the normal way using
1090 routing sockets. The kqueue functionality can generally be replaced
1091 with routing sockets.
1094 The documentation from the FreeBSD Documentation Project (Handbook,
1095 FAQ, etc.) is now installed via packages by sysinstall(8) and under
1096 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc.
1099 The ABI of various structures related to the SYSV IPC API have been
1100 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel
1101 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to
1105 Layout of struct vnet has changed as routing related variables were
1106 moved to their own Vimage module. Modules need to be recompiled. Bump
1107 __FreeBSD_version to 800099.
1110 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024
1111 respectively. As long as no more than 16 groups per process are used,
1112 no changes should be visible. When more than 16 groups are used, old
1113 binaries may fail if they call getgroups() or getgrouplist() with
1114 statically sized storage. Recompiling will work around this, but
1115 applications should be modified to use dynamically allocated storage
1116 for group arrays as POSIX.1-2008 does not cap an implementation's
1117 number of supported groups at NGROUPS_MAX+1 as previous versions did.
1119 NFS and portalfs mounts may also be affected as the list of groups is
1120 truncated to 16. Users of NFS who use more than 16 groups, should
1121 take care that negative group permissions are not used on the exported
1122 file systems as they will not be reliable unless a GSSAPI based
1123 authentication method is used.
1126 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This
1127 option compiles in the support for adaptive spinning for lockmgrs
1128 which want to enable it. The lockinit() function now accepts the flag
1129 LK_ADAPTIVE in order to make the lock object subject to adaptive
1130 spinning when both held in write and read mode.
1133 The layout of the structure returned by IEEE80211_IOC_STA_INFO has
1134 changed. User applications that use this ioctl need to be rebuilt.
1137 The layout of struct thread has changed. Kernel and modules need to
1141 The layout of structs ifnet, domain, protosw and vnet_net has changed.
1142 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097.
1145 window(1) has been removed from the base system. It can now be
1146 installed from ports. The port is called misc/window.
1149 The way we are storing and accessing `routing table' entries has
1150 changed. Programs reading the FIB, like netstat, need to be
1154 A new netisr implementation has been added for FreeBSD 8. Network
1155 file system modules, such as igmp, ipdivert, and others, should be
1157 Bump __FreeBSD_version to 800096.
1160 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no
1164 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
1165 Bump __FreeBSD_version to 800094.
1168 Add mnt_xflag field to 'struct mount'. File system modules need to be
1170 Bump __FreeBSD_version to 800093.
1173 The compiling option ADAPTIVE_SX has been retired while it has been
1174 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
1175 The KPI for sx_init_flags() changes as accepting flags:
1176 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has
1177 been introduced in order to handle the reversed logic.
1178 Bump __FreeBSD_version to 800092.
1181 Add support for hierarchical jails. Remove global securelevel.
1182 Bump __FreeBSD_version to 800091.
1185 The layout of struct vnet_net has changed, therefore modules
1187 Bump __FreeBSD_version to 800090.
1190 The newly imported zic(8) produces a new format in the output. Please
1191 run tzsetup(8) to install the newly created data to /etc/localtime.
1194 The sysctl tree for the usb stack has renamed from hw.usb2.* to
1195 hw.usb.* and is now consistent again with previous releases.
1198 802.11 monitor mode support was revised and driver api's were changed.
1199 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead
1200 of DLT_IEEE802_11. No user-visible data structures were changed but
1201 applications that use DLT_IEEE802_11 may require changes.
1202 Bump __FreeBSD_version to 800088.
1205 The layout of the following structs has changed: sysctl_oid,
1206 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
1207 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
1208 panics may be experienced. World rebuild is required for
1209 correctly checking networking state from userland.
1210 Bump __FreeBSD_version to 800085.
1213 MLDv2 and Source-Specific Multicast (SSM) have been merged
1214 to the IPv6 stack. VIMAGE hooks are in but not yet used.
1215 The implementation of SSM within FreeBSD's IPv6 stack closely
1216 follows the IPv4 implementation.
1218 For kernel developers:
1220 * The most important changes are that the ip6_output() and
1221 ip6_input() paths no longer take the IN6_MULTI_LOCK,
1222 and this lock has been downgraded to a non-recursive mutex.
1224 * As with the changes to the IPv4 stack to support SSM, filtering
1225 of inbound multicast traffic must now be performed by transport
1226 protocols within the IPv6 stack. This does not apply to TCP and
1227 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
1229 * The KPIs used by IPv6 multicast are similar to those used by
1230 the IPv4 stack, with the following differences:
1231 * im6o_mc_filter() is analogous to imo_multicast_filter().
1232 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
1233 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
1234 * IN6_LOOKUP_MULTI() has been deprecated and removed.
1235 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
1236 for MLDv1 have an additional 'timer' argument which is used to
1237 jitter the initial membership report for the solicited-node
1238 multicast membership on-link.
1239 * This is not strictly needed for MLDv2, which already jitters
1240 its report transmissions. However, the 'timer' argument is
1241 preserved in case MLDv1 is active on the interface.
1243 * The KAME linked-list based IPv6 membership implementation has
1244 been refactored to use a vector similar to that used by the IPv4
1246 Code which maintains a list of its own multicast memberships
1247 internally, e.g. carp, has been updated to reflect the new
1250 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
1251 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
1252 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
1253 implementation constraint which needs to be addressed in HEAD.
1255 For application developers:
1257 * The changes are broadly similar to those made for the IPv4
1260 * The use of IPv4 and IPv6 multicast socket options on the same
1261 socket, using mapped addresses, HAS NOT been tested or supported.
1263 * There are a number of issues with the implementation of various
1264 IPv6 multicast APIs which need to be resolved in the API surface
1265 before the implementation is fully compatible with KAME userland
1266 use, and these are mostly to do with interface index treatment.
1268 * The literature available discusses the use of either the delta / ASM
1269 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
1270 using setsourcefilter(3)/getsourcefilter(3). For more information
1271 please refer to RFC 3768, 'Socket Interface Extensions for
1272 Multicast Source Filters'.
1274 * Applications which use the published RFC 3678 APIs should be fine.
1276 For systems administrators:
1278 * The mtest(8) utility has been refactored to support IPv6, in
1279 addition to IPv4. Interface addresses are no longer accepted
1280 as arguments, their names must be used instead. The utility
1281 will map the interface name to its first IPv4 address as
1282 returned by getifaddrs(3).
1284 * The ifmcstat(8) utility has also been updated to print the MLDv2
1285 endpoint state and source filter lists via sysctl(3).
1287 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
1288 loopback of IPv6 multicast datagrams by default; it defaults to 1
1289 to preserve the existing behaviour. Disabling multicast loopback is
1290 recommended for optimal system performance.
1292 * The IPv6 MROUTING code has been changed to examine this sysctl
1293 instead of attempting to perform a group lookup before looping
1294 back forwarded datagrams.
1296 Bump __FreeBSD_version to 800084.
1299 Implement low-level Bluetooth HCI API.
1300 Bump __FreeBSD_version to 800083.
1303 The layout of struct malloc_type, used by modules to register new
1304 memory allocation types, has changed. Most modules will need to
1305 be rebuilt or panics may be experienced.
1306 Bump __FreeBSD_version to 800081.
1309 Anticipate overflowing inp_flags - add inp_flags2.
1310 This changes most offsets in inpcb, so checking v4 connection
1311 state will require a world rebuild.
1312 Bump __FreeBSD_version to 800080.
1315 Add an llentry to struct route and struct route_in6. Modules
1316 embedding a struct route will need to be recompiled.
1317 Bump __FreeBSD_version to 800079.
1320 The size of rt_metrics_lite and by extension rtentry has changed.
1321 Networking administration apps will need to be recompiled.
1322 The route command now supports show as an alias for get, weighting
1323 of routes, sticky and nostick flags to alter the behavior of stateful
1325 Bump __FreeBSD_version to 800078.
1328 Do not use Giant for kbdmux(4) locking. This is wrong and
1329 apparently causing more problems than it solves. This will
1330 re-open the issue where interrupt handlers may race with
1331 kbdmux(4) in polling mode. Typical symptoms include (but
1332 not limited to) duplicated and/or missing characters when
1333 low level console functions (such as gets) are used while
1334 interrupts are enabled (for example geli password prompt,
1335 mountroot prompt etc.). Disabling kbdmux(4) may help.
1338 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
1339 kernel modules referencing any of the above need to be recompiled.
1340 Bump __FreeBSD_version to 800075.
1343 GEOM_PART has become the default partition slicer for storage devices,
1344 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
1345 introduces some changes:
1347 MSDOS/EBR: the devices created from MSDOS extended partition entries
1348 (EBR) can be named differently than with GEOM_MBR and are now symlinks
1349 to devices with offset-based names. fstabs may need to be modified.
1351 BSD: the "geometry does not match label" warning is harmless in most
1352 cases but it points to problems in file system misalignment with
1353 disk geometry. The "c" partition is now implicit, covers the whole
1354 top-level drive and cannot be (mis)used by users.
1356 General: Kernel dumps are now not allowed to be written to devices
1357 whose partition types indicate they are meant to be used for file
1358 systems (or, in case of MSDOS partitions, as something else than
1361 Most of these changes date approximately from 200812.
1364 The uscanner(4) driver has been removed from the kernel. This follows
1365 Linux removing theirs in 2.6 and making libusb the default interface
1366 (supported by sane).
1369 The multicast forwarding code has been cleaned up. netstat(1)
1370 only relies on KVM now for printing bandwidth upcall meters.
1371 The IPv4 and IPv6 modules are split into ip_mroute_mod and
1372 ip6_mroute_mod respectively. The config(5) options for statically
1373 compiling this code remain the same, i.e. 'options MROUTING'.
1376 Support for the IFF_NEEDSGIANT network interface flag has been
1377 removed, which means that non-MPSAFE network device drivers are no
1378 longer supported. In particular, if_ar, if_sr, and network device
1379 drivers from the old (legacy) USB stack can no longer be built or
1383 POSIX.1 Native Language Support (NLS) has been enabled in libc and
1384 a bunch of new language catalog files have also been added.
1385 This means that some common libc messages are now localized and
1386 they depend on the LC_MESSAGES environmental variable.
1389 The k8temp(4) driver has been renamed to amdtemp(4) since
1390 support for Family 10 and Family 11 CPU families was added.
1393 IGMPv3 and Source-Specific Multicast (SSM) have been merged
1394 to the IPv4 stack. VIMAGE hooks are in but not yet used.
1396 For kernel developers, the most important changes are that the
1397 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
1398 and this lock has been downgraded to a non-recursive mutex.
1400 Transport protocols (UDP, Raw IP) are now responsible for filtering
1401 inbound multicast traffic according to group membership and source
1402 filters. The imo_multicast_filter() KPI exists for this purpose.
1403 Transports which do not use multicast (SCTP, TCP) already reject
1404 multicast by default. Forwarding and receive performance may improve
1405 as a mutex acquisition is no longer needed in the ip_input()
1406 low-level input path. in_addmulti() and in_delmulti() are shimmed
1407 to new KPIs which exist to support SSM in-kernel.
1409 For application developers, it is recommended that loopback of
1410 multicast datagrams be disabled for best performance, as this
1411 will still cause the lock to be taken for each looped-back
1412 datagram transmission. The net.inet.ip.mcast.loop sysctl may
1413 be tuned to 0 to disable loopback by default; it defaults to 1
1414 to preserve the existing behaviour.
1416 For systems administrators, to obtain best performance with
1417 multicast reception and multiple groups, it is always recommended
1418 that a card with a suitably precise hash filter is used. Hash
1419 collisions will still result in the lock being taken within the
1420 transport protocol input path to check group membership.
1422 If deploying FreeBSD in an environment with IGMP snooping switches,
1423 it is recommended that the net.inet.igmp.sendlocal sysctl remain
1424 enabled; this forces 224.0.0.0/24 group membership to be announced
1427 The size of 'struct igmpstat' has changed; netstat needs to be
1428 recompiled to reflect this.
1429 Bump __FreeBSD_version to 800070.
1432 libusb20.so.1 is now installed as libusb.so.1 and the ports system
1433 updated to use it. This requires a buildworld/installworld in order to
1434 update the library and dependencies (usbconfig, etc). Its advisable to
1435 rebuild all ports which uses libusb. More specific directions are given
1436 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
1437 libusb are no longer required and can be removed.
1440 A workaround is committed to allow the creation of System V shared
1441 memory segment of size > 2 GB on the 64-bit architectures.
1442 Due to a limitation of the existing ABI, the shm_segsz member
1443 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
1444 wrong for large segments. Note that limits must be explicitly
1445 raised to allow such segments to be created.
1448 The layout of struct ifnet has changed, requiring a rebuild of all
1449 network device driver modules.
1452 The /dev handling for the new USB stack has changed, a
1453 buildworld/installworld is required for libusb20.
1456 The new USB2 stack has now been permanently moved in and all kernel and
1457 module names reverted to their previous values (eg, usb, ehci, ohci,
1458 ums, ...). The old usb stack can be compiled in by prefixing the name
1459 with the letter 'o', the old usb modules have been removed.
1460 Updating entry 20090216 for xorg and 20090215 for libmap may still
1464 The rc.conf(5) option if_up_delay has been renamed to
1465 defaultroute_delay to better reflect its purpose. If you have
1466 customized this setting in /etc/rc.conf you need to update it to
1470 xorg 7.4 wants to configure its input devices via hald which does not
1471 yet work with USB2. If the keyboard/mouse does not work in xorg then
1473 Option "AllowEmptyInput" "off"
1474 to your ServerLayout section. This will cause X to use the configured
1475 kbd and mouse sections from your xorg.conf.
1478 The GENERIC kernels for all architectures now default to the new USB2
1479 stack. No kernel config options or code have been removed so if a
1480 problem arises please report it and optionally revert to the old USB
1481 stack. If you are loading USB kernel modules or have a custom kernel
1482 that includes GENERIC then ensure that usb names are also changed over,
1483 eg uftdi -> usb2_serial_ftdi.
1485 Older programs linked against the ports libusb 0.1 need to be
1486 redirected to the new stack's libusb20. /etc/libmap.conf can
1488 # Map old usb library to new one for usb2 stack
1489 libusb-0.1.so.8 libusb20.so.1
1492 All USB ethernet devices now attach as interfaces under the name ueN
1493 (eg. ue0). This is to provide a predictable name as vendors often
1494 change usb chipsets in a product without notice.
1497 The ichsmb(4) driver has been changed to require SMBus slave
1498 addresses be left-justified (xxxxxxx0b) rather than right-justified.
1499 All of the other SMBus controller drivers require left-justified
1500 slave addresses, so this change makes all the drivers provide the
1504 INET6 statistics (struct ip6stat) was updated.
1505 netstat(1) needs to be recompiled.
1508 NTFS has been removed from GENERIC kernel on amd64 to match
1509 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
1510 will load ntfs.ko module automatically when NTFS support is
1511 actually needed, unless ntfs.ko is not installed or security
1512 level prohibits loading kernel modules. If either is the case,
1513 "options NTFS" has to be added into kernel config.
1516 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
1517 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
1518 800061. User space tools that rely on the size of struct tcpcb in
1519 tcp_var.h (e.g. sockstat) need to be recompiled.
1522 ng_tty(4) module updated to match the new TTY subsystem.
1523 Due to API change, user-level applications must be updated.
1524 New API support added to mpd5 CVS and expected to be present
1525 in next mpd5.3 release.
1528 With __FreeBSD_version 800060 the makefs tool is part of
1529 the base system (it was a port).
1532 The afdata and ifnet locks have been changed from mutexes to
1533 rwlocks, network modules will need to be re-compiled.
1536 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
1537 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
1538 The new code reduced struct rtentry{} by 16 bytes on 32-bit
1539 architecture and 40 bytes on 64-bit architecture. The userland
1540 applications "arp" and "ndp" have been updated accordingly.
1541 The output from "netstat -r" shows only routing entries and
1542 none of the L2 information.
1545 __FreeBSD_version 800057 marks the switchover from the
1546 binary ath hal to source code. Users must add the line:
1548 options AH_SUPPORT_AR5416
1550 to their kernel config files when specifying:
1554 The ath_hal module no longer exists; the code is now compiled
1555 together with the driver in the ath module. It is now
1556 possible to tailor chip support (i.e. reduce the set of chips
1557 and thereby the code size); consult ath_hal(4) for details.
1560 __FreeBSD_version 800054 adds memory barriers to
1561 <machine/atomic.h>, new interfaces to ifnet to facilitate
1562 multiple hardware transmit queues for cards that support
1563 them, and a lock-less ring-buffer implementation to
1564 enable drivers to more efficiently manage queueing of
1568 A new version of ZFS (version 13) has been merged to -HEAD.
1569 This version has zpool attribute "listsnapshots" off by
1570 default, which means "zfs list" does not show snapshots,
1571 and is the same as Solaris behavior.
1574 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
1577 The uhci, ohci, ehci and slhci USB Host controller drivers have
1578 been put into separate modules. If you load the usb module
1579 separately through loader.conf you will need to load the
1580 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
1581 controller add the following to loader.conf:
1587 The ABI used by the PMC toolset has changed. Please keep
1588 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
1592 atapci kernel module now includes only generic PCI ATA
1593 driver. AHCI driver moved to ataahci kernel module.
1594 All vendor-specific code moved into separate kernel modules:
1595 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
1596 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
1597 atamarvell, atamicron, atanational, atanetcell, atanvidia,
1598 atapromise, ataserverworks, atasiliconimage, atasis, atavia
1601 The TTY subsystem of the kernel has been replaced by a new
1602 implementation, which provides better scalability and an
1603 improved driver model. Most common drivers have been migrated to
1604 the new TTY subsystem, while others have not. The following
1605 drivers have not yet been ported to the new TTY layer:
1608 cy, digi, rc, rp, sio
1614 ng_h4, ng_tty, ppp, sl, snp
1616 Adding these drivers to your kernel configuration file shall
1617 cause compilation to fail.
1620 ntpd has been upgraded to 4.2.4p5.
1623 OpenSSH has been upgraded to 5.1p1.
1625 For many years, FreeBSD's version of OpenSSH preferred DSA
1626 over RSA for host and user authentication keys. With this
1627 upgrade, we've switched to the vendor's default of RSA over
1628 DSA. This may cause upgraded clients to warn about unknown
1629 host keys even for previously known hosts. Users should
1630 follow the usual procedure for verifying host keys before
1631 accepting the RSA key.
1633 This can be circumvented by setting the "HostKeyAlgorithms"
1634 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
1637 Please note that the sequence of keys offered for
1638 authentication has been changed as well. You may want to
1639 specify IdentityFile in a different order to revert this
1643 The sio(4) driver has been removed from the i386 and amd64
1644 kernel configuration files. This means uart(4) is now the
1645 default serial port driver on those platforms as well.
1647 To prevent collisions with the sio(4) driver, the uart(4) driver
1648 uses different names for its device nodes. This means the
1649 onboard serial port will now most likely be called "ttyu0"
1650 instead of "ttyd0". You may need to reconfigure applications to
1651 use the new device names.
1653 When using the serial port as a boot console, be sure to update
1654 /boot/device.hints and /etc/ttys before booting the new kernel.
1655 If you forget to do so, you can still manually specify the hints
1656 at the loader prompt:
1658 set hint.uart.0.at="isa"
1659 set hint.uart.0.port="0x3F8"
1660 set hint.uart.0.flags="0x10"
1661 set hint.uart.0.irq="4"
1665 The gpt(8) utility has been removed. Use gpart(8) to partition
1669 The version that Linuxulator emulates was changed from 2.4.2
1670 to 2.6.16. If you experience any problems with Linux binaries
1671 please try to set sysctl compat.linux.osrelease to 2.4.2 and
1672 if it fixes the problem contact emulation mailing list.
1675 ISDN4BSD (I4B) was removed from the src tree. You may need to
1676 update a your kernel configuration and remove relevant entries.
1679 I have checked in code to support multiple routing tables.
1680 See the man pages setfib(1) and setfib(2).
1681 This is a hopefully backwards compatible version,
1682 but to make use of it you need to compile your kernel
1683 with options ROUTETABLES=2 (or more up to 16).
1686 The 802.11 wireless support was redone to enable multi-bss
1687 operation on devices that are capable. The underlying device
1688 is no longer used directly but instead wlanX devices are
1689 cloned with ifconfig. This requires changes to rc.conf files.
1690 For example, change:
1691 ifconfig_ath0="WPA DHCP"
1694 ifconfig_wlan0="WPA DHCP"
1695 see rc.conf(5) for more details. In addition, mergemaster of
1696 /etc/rc.d is highly recommended. Simultaneous update of userland
1697 and kernel wouldn't hurt either.
1699 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
1700 modules were merged into the base wlan module. All references
1701 to these modules (e.g. in kernel config files) must be removed.
1704 psm(4) has gained write(2) support in native operation level.
1705 Arbitrary commands can be written to /dev/psm%d and status can
1706 be read back from it. Therefore, an application is responsible
1707 for status validation and error recovery. It is a no-op in
1708 other operation levels.
1711 Support for KSE threading has been removed from the kernel. To
1712 run legacy applications linked against KSE libmap.conf may
1713 be used. The following libmap.conf may be used to ensure
1714 compatibility with any prior release:
1716 libpthread.so.1 libthr.so.1
1717 libpthread.so.2 libthr.so.2
1718 libkse.so.3 libthr.so.3
1721 The layout of struct vmspace has changed. This affects libkvm
1722 and any executables that link against libkvm and use the
1723 kvm_getprocs() function. In particular, but not exclusively,
1724 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
1725 The effects are minimal, but it's advisable to upgrade world
1729 The latest em driver no longer has support in it for the
1730 82575 adapter, this is now moved to the igb driver. The
1731 split was done to make new features that are incompatible
1732 with older hardware easier to do.
1735 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
1736 likewise the kernel option is now GEOM_LINUX_LVM.
1739 The default NFS mount mode has changed from UDP to TCP for
1740 increased reliability. If you rely on (insecurely) NFS
1741 mounting across a firewall you may need to update your
1745 Belatedly note the addition of m_collapse for compacting
1749 The fts(3) structures have been changed to use adequate
1750 integer types for their members and so to be able to cope
1751 with huge file trees. The old fts(3) ABI is preserved
1752 through symbol versioning in libc, so third-party binaries
1753 using fts(3) should still work, although they will not take
1754 advantage of the extended types. At the same time, some
1755 third-party software might fail to build after this change
1756 due to unportable assumptions made in its source code about
1757 fts(3) structure members. Such software should be fixed
1758 by its vendor or, in the worst case, in the ports tree.
1759 FreeBSD_version 800015 marks this change for the unlikely
1760 case that a portable fix is impossible.
1763 To upgrade to -current after this date, you must be running
1764 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
1765 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
1768 The ADAPTIVE_GIANT kernel option has been retired because its
1769 functionality is the default now.
1772 The AT keyboard emulation of sunkbd(4) has been turned on
1773 by default. In order to make the special symbols of the Sun
1774 keyboards driven by sunkbd(4) work under X these now have
1775 to be configured the same way as Sun USB keyboards driven
1776 by ukbd(4) (which also does AT keyboard emulation), f.e.:
1778 Option "XkbLayout" "us"
1779 Option "XkbRules" "xorg"
1780 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
1783 It has been decided that it is desirable to provide ABI
1784 backwards compatibility to the FreeBSD 4/5/6 versions of the
1785 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
1786 broken with the introduction of PCI domain support (see the
1787 20070930 entry). Unfortunately, this required the ABI of
1788 PCIOCGETCONF to be broken again in order to be able to
1789 provide backwards compatibility to the old version of that
1790 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
1791 again. As for prominent ports this affects neither pciutils
1792 nor xorg-server this time, the hal port needs to be rebuilt
1796 The misnamed kthread_create() and friends have been renamed
1797 to kproc_create() etc. Many of the callers already
1798 used kproc_start()..
1799 I will return kthread_create() and friends in a while
1800 with implementations that actually create threads, not procs.
1801 Renaming corresponds with version 800002.
1810 Avoid using make -j when upgrading. While generally safe, there are
1811 sometimes problems using -j to upgrade. If your upgrade fails with
1812 -j, please try again without -j. From time to time in the past there
1813 have been problems using -j with buildworld and/or installworld. This
1814 is especially true when upgrading between "distant" versions (eg one
1815 that cross a major release boundary or several minor releases, or when
1816 several months have passed on the -current branch).
1818 Sometimes, obscure build problems are the result of environment
1819 poisoning. This can happen because the make utility reads its
1820 environment when searching for values for global variables. To run
1821 your build attempts in an "environmental clean room", prefix all make
1822 commands with 'env -i '. See the env(1) manual page for more details.
1824 When upgrading from one major version to another it is generally best
1825 to upgrade to the latest code in the currently installed branch first,
1826 then do an upgrade to the new branch. This is the best-tested upgrade
1827 path, and has the highest probability of being successful. Please try
1828 this approach before reporting problems with a major version upgrade.
1832 When upgrading the boot ZFS pool to a new version, always follow
1835 1.) recompile and reinstall the ZFS boot loader and boot block
1836 (this is part of "make buildworld" and "make installworld")
1838 2.) update the ZFS boot block on your boot drive
1840 The following example updates the ZFS boot block on the first
1841 partition (freebsd-boot) of a GPT partitioned drive ad0:
1842 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
1844 Non-boot pools do not need these updates.
1848 If you are updating from a prior version of FreeBSD (even one just
1849 a few days old), you should follow this procedure. It is the most
1850 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1852 make kernel-toolchain
1853 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1854 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1856 To test a kernel once
1857 ---------------------
1858 If you just want to boot a kernel once (because you are not sure
1859 if it works, or if you want to boot a known bad kernel to provide
1860 debugging information) run
1861 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1862 nextboot -k testkernel
1864 To just build a kernel when you know that it won't mess you up
1865 --------------------------------------------------------------
1866 This assumes you are already running a CURRENT system. Replace
1867 ${arch} with the architecture of your machine (e.g. "i386",
1868 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc).
1870 cd src/sys/${arch}/conf
1871 config KERNEL_NAME_HERE
1872 cd ../compile/KERNEL_NAME_HERE
1877 If this fails, go to the "To build a kernel" section.
1879 To rebuild everything and install it on the current system.
1880 -----------------------------------------------------------
1881 # Note: sometimes if you are running current you gotta do more than
1882 # is listed here if you are upgrading from a really old current.
1884 <make sure you have good level 0 dumps>
1886 make kernel KERNCONF=YOUR_KERNEL_HERE
1888 <reboot in single user> [3]
1896 To cross-install current onto a separate partition
1897 --------------------------------------------------
1898 # In this approach we use a separate partition to hold
1899 # current's root, 'usr', and 'var' directories. A partition
1900 # holding "/", "/usr" and "/var" should be about 2GB in
1903 <make sure you have good level 0 dumps>
1906 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1907 <maybe newfs current's root partition>
1908 <mount current's root partition on directory ${CURRENT_ROOT}>
1909 make installworld DESTDIR=${CURRENT_ROOT}
1910 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1911 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1912 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1913 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1914 <reboot into current>
1915 <do a "native" rebuild/install as described in the previous section>
1916 <maybe install compatibility libraries from ports/misc/compat*>
1920 To upgrade in-place from stable to current
1921 ----------------------------------------------
1922 <make sure you have good level 0 dumps>
1924 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1926 <reboot in single user> [3]
1933 Make sure that you've read the UPDATING file to understand the
1934 tweaks to various things you need. At this point in the life
1935 cycle of current, things change often and you are on your own
1936 to cope. The defaults can also change, so please read ALL of
1937 the UPDATING entries.
1939 Also, if you are tracking -current, you must be subscribed to
1940 freebsd-current@freebsd.org. Make sure that before you update
1941 your sources that you have read and understood all the recent
1942 messages there. If in doubt, please track -stable which has
1943 much fewer pitfalls.
1945 [1] If you have third party modules, such as vmware, you
1946 should disable them at this point so they don't crash your
1949 [3] From the bootblocks, boot -s, and then do
1954 adjkerntz -i # if CMOS is wall time
1955 Also, when doing a major release upgrade, it is required that
1956 you boot into single user mode to do the installworld.
1958 [4] Note: This step is non-optional. Failure to do this step
1959 can result in a significant reduction in the functionality of the
1960 system. Attempting to do it by hand is not recommended and those
1961 that pursue this avenue should read this file carefully, as well
1962 as the archives of freebsd-current and freebsd-hackers mailing lists
1963 for potential gotchas. The -U option is also useful to consider.
1964 See mergemaster(8) for more information.
1966 [5] Usually this step is a noop. However, from time to time
1967 you may need to do this if you get unknown user in the following
1968 step. It never hurts to do it all the time. You may need to
1969 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1970 install) after the buildworld before this step if you last updated
1971 from [78]-stable or 9-stable before 20130430.
1973 [6] This only deletes old files and directories. Old libraries
1974 can be deleted by "make delete-old-libs", but you have to make
1975 sure that no program is using those libraries anymore.
1977 [8] In order to have a kernel that can run the 4.x binaries needed to
1978 do an installworld, you must include the COMPAT_FREEBSD4 option in
1979 your kernel. Failure to do so may leave you with a system that is
1980 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is
1981 required to run the 5.x binaries on more recent kernels. And so on
1982 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7.
1984 Make sure that you merge any new devices from GENERIC since the
1985 last time you updated your kernel config file.
1987 [9] When checking out sources, you must include the -P flag to have
1988 cvs prune empty directories.
1990 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1991 "?=" instead of the "=" assignment operator, so that buildworld can
1992 override the CPUTYPE if it needs to.
1994 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1995 not on the command line, or in /etc/make.conf. buildworld will
1996 warn if it is improperly defined.
1999 This file contains a list, in reverse chronological order, of major
2000 breakages in tracking -current. It is not guaranteed to be a complete
2001 list of such breakages, and only contains entries since October 10, 2007.
2002 If you need to see UPDATING entries from before that date, you will need
2003 to fetch an UPDATING file from an older FreeBSD release.
2005 Copyright information:
2007 Copyright 1998-2009 M. Warner Losh. All Rights Reserved.
2009 Redistribution, publication, translation and use, with or without
2010 modification, in full or in part, in any form or format of this
2011 document are permitted without further permission from the author.
2013 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
2014 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
2015 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
2016 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
2017 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
2018 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
2019 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2020 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
2021 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
2022 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
2023 POSSIBILITY OF SUCH DAMAGE.
2025 Contact Warner Losh if you have any questions about your use of