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 20161206 p51 FreeBSD-SA-16:36.telnetd
16 FreeBSD-EN-16:19.tzcode
17 FreeBSD-EN-16:20.tzdata
19 Fix possible login(1) argument injection in telnetd(8). [SA-16:36]
20 Fix link_ntoa(3) buffer overflow in libc. [SA-16:37]
21 Fix warnings about valid time zone abbreviations. [EN-16:19]
22 Update timezone database information. [EN-16:20]
24 20161102 p50 FreeBSD-SA-16:34.bind
25 FreeBSD-SA-16:35.openssl
27 Fix BIND remote Denial of Service vulnerability. [SA-16:34]
29 Fix OpenSSL remote DoS vulnerability. [SA-16:35]
31 20161025 p49 FreeBSD-SA-16:15.sysarch [revised]
33 Fix incorrect argument validation in sysarch(2). [SA-16:15]
35 20161010 p48 FreeBSD-SA-16:28.bind
36 FreeBSD-SA-16:29.bspatch
37 FreeBSD-SA-16:30.portsnap
39 Fix BIND remote Denial of Service vulnerability. [SA-16:28]
41 Fix bspatch heap overflow vulnerability. [SA-16:29]
43 Fix multiple portsnap vulnerabilities. [SA-16:30]
45 20160926 p47 FreeBSD-SA-16:26.openssl [revised]
47 Fix OpenSSL regression introduced in SA-16:26.
49 20160923 p46 FreeBSD-SA-16:26.openssl
51 Fix multiple OpenSSL vulnerabilitites.
53 20160725 p45 FreeBSD-SA-16:25.bspatch
54 FreeBSD-EN-16:09.freebsd-update
56 Fix bspatch heap overflow vulnerability. [SA-16:25]
58 Fix freebsd-update(8) support of FreeBSD 11.0 release
59 distribution. [EN-16:09]
61 20160604 p44 FreeBSD-SA-16:24.ntp
63 Fix multiple vulnerabilities of ntp.
65 20160531 p43 FreeBSD-SA-16:20.linux
66 FreeBSD-SA-16:21.43bsd
67 FreeBSD-SA-16:22.libarchive
68 FreeBSD-SA-16:23.libarchive
70 Fix kernel stack disclosure in Linux compatibility layer. [SA-16:20]
71 Fix kernel stack disclosure in 4.3BSD compatibility layer. [SA-16:21]
72 Fix directory traversal in cpio(1). [SA-16:22]
73 Fix buffer overflow in libarchive(3). [SA-16:23]
75 20160517 p42 FreeBSD-SA-16:18.atkbd
77 Fix buffer overflow in keyboard driver. [SA-16:18]
79 20160504 p41 FreeBSD-SA-16:17.openssl
82 Fix multiple OpenSSL vulnerabilitites. [SA-16:17]
84 Fix memory leak in ZFS. [EN-16:08]
86 20160429 p40 FreeBSD-SA-16:16.ntp
88 Fix multiple vulnerabilities of ntp.
90 20160316 p39 FreeBSD-SA-16:14.openssh-xauth
91 FreeBSD-SA-16:15.sysarch
93 Fix OpenSSH xauth(1) command injection. [SA-16:14]
94 Fix incorrect argument validation in sysarch(2). [SA-16:15]
96 20160310 p38 FreeBSD-SA-16:13.bind
97 FreeBSD-SA-16:12.openssl [revised]
99 Fix multiple vulnerabilities of BIND. [SA-16:13]
101 Fix a regression with OpenSSL patch. [SA-16:12]
103 20160303 p37 FreeBSD-SA-16:12.openssl
105 Fix multiple vulnerabilities of OpenSSL.
107 20160130 p36 FreeBSD-SA-16:11.openssl
109 Fix OpenSSL SSLv2 ciphersuite downgrade vulnerability. [SA-16:11]
111 20160127 p35 FreeBSD-SA-16:08.bind
113 FreeBSD-SA-16:10.linux
115 Fix BIND remote denial of service vulnerability. [SA-16:08]
117 Fix multiple vulnerabilities of ntp. [SA-16:09]
119 Fix Linux compatibility layer issetugid(2) system call
120 vulnerability. [SA-16:10]
122 20160114 p34 FreeBSD-SA-16:07.openssh
124 Fix OpenSSH client information leak. [SA-16:07]
126 20160114 p33 FreeBSD-EN-16:02.pf
127 FreeBSD-EN-16:03.yplib
128 FreeBSD-SA-16:01.sctp
130 FreeBSD-SA-16:03.linux
131 FreeBSD-SA-16:04.linux
133 FreeBSD-SA-16:06.bsnmpd
135 Fix pf(4) generating bad TCP checksums. [EN-16:02]
136 Fix infinite loop in YP/NIS client library. [EN-16:03]
137 Fix remote denial of service in SCTP. [SA-16:01]
138 Update NTP to 4.2.8p5. [SA-16:02]
139 Fix kernel memory diclosure in Linux compatibility layer. [SA-16:03]
140 Fix kernel memory overwrite in Linux compatibility layer. [SA-16:04]
141 Fix crash in TCP MD5 signatures. [SA-16:05]
142 Fix insecure default permissions for snmpd.config. [SA-16:06]
144 20151216 p32 FreeBSD-SA-15:27.bind
145 Fix BIND remote denial of service vulnerability. [SA-15:27]
147 20151205 p31 FreeBSD-SA-15:26.openssl
149 Fix OpenSSL X509_ATTRIBUTE memory leak. [SA-15:26]
151 20151104 p30 FreeBSD-SA-15:25.ntp [revised]
152 FreeBSD-EN-15:19.kqueue
155 Fix regression of ntpq(8) utility exiting due to trap 6 in
156 9.3-RELEASE-p29. [SA-15:25]
158 Fix regression in ntpd(8) lacking support for RAWDCF reference
159 clock in 9.3-RELEASE-p29. [SA-15:25]
161 Fix kqueue write events never fired for files greater 2GB. [EN-15:19]
163 Fix applications exiting due to segmentation violation on a correct
164 memory address. [EN-15:20]
166 20151026: p29 FreeBSD-SA-15:25.ntp
168 Fix multiple NTP vulnerabilities. New NTP version is 4.2.8p4.
170 The configuration file syntax has been changed, thus mergemaster
171 run is recommended. Now the "kod" parameter requires "limited"
172 parameter. If the ntp.conf is not updated, the ntpd will run
173 successfully, but with KoD disabled.
175 20151002: p28 FreeBSD-SA-15:24.rpcbind [revised]
176 Revised patch to address a regression that prevents NIS from working.
178 20150929: p27 FreeBSD-SA-15:24.rpcbind
180 Fix rpcbind(8) remote denial of service. [SA-15:24]
182 20150916: p26 FreeBSD-EN-15:18.pkg
184 Implement pubkey support for pkg(7) bootstrap. [EN-15:18]
186 20150902: p25 FreeBSD-SA-15:23.bind
188 Fix BIND remote denial of service vulnerability. [SA-15:23]
190 20150825: p24 FreeBSD-SA-15:21.amd64
191 FreeBSD-SA-15:22.openssh
194 Fix local privilege escalation in IRET handler. [SA-15:21]
196 Fix OpenSSH multiple vulnerabilities. [SA-15:22]
198 Fix insufficient check of unsupported pkg(7) signature methods.
201 20150818: p23 FreeBSD-SA-15:20.expat
203 Fix multiple integer overflows in expat (libbsdxml) XML parser.
206 20150805: p22 FreeBSD-SA-15:19.routed
208 Fix routed remote denial of service vulnerability.
210 20150728: p21 FreeBSD-SA-15:15.tcp
211 FreeBSD-SA-15:16.openssh
212 FreeBSD-SA-15:17.bind
214 Fix resource exhaustion in TCP reassembly. [SA-15:15]
216 Fix OpenSSH multiple vulnerabilities. [SA-15:16]
218 Fix BIND remote denial of service vulnerability. [SA-15:17]
220 20150721: p20 FreeBSD-SA-15:13.tcp
222 Fix resource exhaustion due to sessions stuck in LAST_ACK state.
225 20150707: p19 FreeBSD-SA-15:11.bind
226 Fix BIND resolver remote denial of service when validating.
228 20150630: p18 FreeBSD-EN-15:08.sendmail [revised]
229 FreeBSD-EN-15:09.xlocale
231 Improvements to sendmail TLS/DH interoperability. [EN-15:08]
233 Fix inconsistency between locale and rune locale states.
236 20150618: p17 FreeBSD-EN-15:08.sendmail
237 Improvements to sendmail TLS/DH interoperability. [EN-15:08]
239 20150612: p16 FreeBSD-SA-15:10.openssl
240 Fix multiple vulnerabilities in OpenSSL. [SA-15:10]
242 20150609: p15 FreeBSD-EN-15:06.file
244 Updated base system file(1) to 5.22 to address multiple denial
247 20150513: p14 FreeBSD-EN-15:04.freebsd-update
249 Fix bug with freebsd-update(8) that does not ensure the previous
250 upgrade was completed. [EN-15:04]
252 20150407: p13 FreeBSD-SA-15:04.igmp [revised]
254 FreeBSD-SA-15:09.ipv6
256 Improved patch for SA-15:04.igmp.
258 Fix multiple vulnerabilities of ntp. [SA-15:07]
260 Fix Denial of Service with IPv6 Router Advertisements. [SA-15:09]
263 Fix patch for SA-15:06.openssl.
265 20150319: p11 FreeBSD-SA-15:06.openssl
266 Fix multiple vulnerabilities in OpenSSL. [SA-15:06]
268 20150225: p10 FreeBSD-SA-15:04.igmp
269 FreeBSD-SA-15:05.bind
271 FreeBSD-EN-15:02.openssl
272 FreeBSD-EN-15:03.freebsd-update
274 Fix integer overflow in IGMP protocol. [SA-15:04]
276 Fix BIND remote denial of service vulnerability. [SA-15:05]
278 Fix vt(4) crash with improper ioctl parameters. [EN-15:01]
280 Updated base system OpenSSL to 0.9.8zd. [EN-15:02]
282 Fix freebsd-update libraries update ordering issue. [EN-15:03]
284 20150127: p9 FreeBSD-SA-15:02.kmem
285 FreeBSD-SA-15:03.sctp
287 Fix SCTP SCTP_SS_VALUE kernel memory corruption and disclosure
288 vulnerability. [SA-15:02]
290 Fix SCTP stream reset vulnerability. [SA-15:03]
292 20150114: p8 FreeBSD-SA-15:01.openssl
293 Fix multiple vulnerabilities in OpenSSL. [SA-15:01]
295 20141223: p7 FreeBSD-SA-14:31.ntp
296 FreeBSD-EN-14:13.freebsd-update
298 Fix multiple vulnerabilities in NTP suite. [SA-14:31]
299 Fix directory deletion issue in freebsd-update. [EN-14:13]
301 20141210: p6 FreeBSD-SA-14:28.file
302 FreeBSD-SA-14:29.bind
304 Fix multiple vulnerabilities in file(1) and libmagic(3).
307 Fix BIND remote denial of service vulnerability. [SA-14:29]
309 20141104: p5 FreeBSD-SA-14:25.setlogin
313 Fix kernel stack disclosure in setlogin(2) / getlogin(2).
316 Fix remote command execution in ftp(1). [SA-14:26]
318 Fix NFSv4 and ZFS cache consistency issue. [EN-14:12]
320 20141022: p4 FreeBSD-EN-14:10.tzdata
321 FreeBSD-EN-14:11.crypt
323 Time zone data file update. [EN-14:10]
325 Change crypt(3) default hashing algorithm back to DES. [EN-14:11]
327 20141021: p3 FreeBSD-SA-14:20.rtsold
328 FreeBSD-SA-14:21.routed
329 FreeBSD-SA-14:22.namei
330 FreeBSD-SA-14:23.openssl
332 Fix rtsold(8) remote buffer overflow vulnerability. [SA-14:20]
334 Fix routed(8) remote denial of service vulnerability. [SA-14:21]
336 Fix memory leak in sandboxed namei lookup. [SA-14:22]
338 Fix OpenSSL multiple vulnerabilities. [SA-14:23]
340 20140916: p2 FreeBSD-SA-14:19.tcp
341 Fix Denial of Service in TCP packet processing. [SA-14:19]
343 20140909: p1 FreeBSD-SA-14:18.openssl
344 Fix OpenSSL multiple vulnerabilities. [SA-14:18]
350 On i386 and amd64 systems, the onifconsole flag is now set by default
351 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled
352 as a login TTY if it is set in the bootloader as an active kernel
353 console. No changes in behavior should result otherwise. To revert to
354 the previous behavior, set ttyu0 to "off" in /etc/ttys.
357 Clang and llvm have been upgraded to 3.4.1 release.
360 Clang and llvm have been upgraded to 3.4 release.
363 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has
364 been deprecated and will not be part of FreeBSD 11.0 and later
365 releases. If you use this driver, please consider switching to
366 the nfe(4) driver instead.
369 The behavior of gss_pseudo_random() for the krb5 mechanism
370 has changed, for applications requesting a longer random string
371 than produced by the underlying enctype's pseudo-random() function.
372 In particular, the random string produced from a session key of
373 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will
374 be different at the 17th octet and later, after this change.
375 The counter used in the PRF+ construction is now encoded as a
376 big-endian integer in accordance with RFC 4402.
377 __FreeBSD_version is bumped to 902505.
383 Behavior of devfs rules path matching has been changed.
384 Pattern is now always matched against fully qualified devfs
385 path and slash characters must be explicitly matched by
386 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs
387 subdirectories must be reviewed.
390 hastctl(8)'s `status' command output changed to terse one-liner format.
391 Scripts using this should switch to `list' command or be rewritten.
394 Fix a bug that allowed a tracing process (e.g. gdb) to write
395 to a memory-mapped file in the traced process's address space
396 even if neither the traced process nor the tracing process had
397 write access to that file.
400 Added ZFS TRIM support which is enabled by default. To disable
401 ZFS TRIM support set vfs.zfs.trim.enabled=0 in loader.conf.
403 Creating new ZFS pools and adding new devices to existing pools
404 first performs a full device level TRIM which can take a significant
405 amount of time. The sysctl vfs.zfs.vdev.trim_on_init can be set to 0
406 to disable this behaviour.
408 ZFS TRIM requires the underlying device support BIO_DELETE which
409 is currently provided by methods such as ATA TRIM and SCSI UNMAP
410 via CAM, which are typically supported by SSD's.
412 Stats for ZFS TRIM can be monitored by looking at the sysctl's
413 under kstat.zfs.misc.zio_trim.
416 `list' command has been added to hastctl(8). For now, it is full
417 equivalent of `status' command.
418 WARNING: in the near future the output of hastctl's status command
419 will change to more terse format. If you use `hastctl status'
420 for parsing in your scripts, switch to `hastctl list'.
423 The mergemaster command now uses the default MAKEOBJDIRPREFIX
424 rather than creating it's own in the temporary directory in
425 order allow access to bootstrapped versions of tools such as
426 install and mtree. When upgrading from version of FreeBSD where
427 the install command does not support -l, you will need to
428 install a new mergemaster command if mergemaster -p is required.
429 This can be accomplished with the command (cd src/usr.sbin/mergemaster
432 Due to the use of the new -l option to install(1) during build
433 and install, you must take care not to directly set the INSTALL
434 make variable in your /etc/make.conf, /etc/src.conf, or on the
435 command line. If you wish to use the -C flag for all installs
436 you may be able to add INSTALL+=-C to /etc/make.conf or
440 Fix a bug that allows NFS clients to issue READDIR on files.
443 The install(1) option -M has changed meaning and now takes an
444 argument that is a file or path to append logs to. In the
445 unlikely event that -M was the last option on the command line
446 and the command line contained at least two files and a target
447 directory the first file will have logs appended to it. The -M
448 option served little practical purpose in the last decade so it's
449 used expected to be extremely rare.
452 A new compression method (lz4) has been merged to. Please refer to
453 zpool-features(7) for more information.
455 Please refer to the "ZFS notes" section of this file for information
456 on upgrading boot ZFS pools.
459 The VFS KBI was changed with the merge of several nullfs
460 optimizations and fixes. All filesystem modules must be
464 With the addition of auditdistd(8), a new auditdistd user is now
465 depended on during installworld. "mergemaster -p" can be used to add
466 the user prior to installworld, as documented in the handbook.
472 A new version of ZFS (pool version 5000) has been merged to 9-STABLE.
473 Starting with this version the old system of ZFS pool versioning
474 is superseded by "feature flags". This concept enables forward
475 compatibility against certain future changes in functionality of ZFS
476 pools. The first two read-only compatible "feature flags" for ZFS
477 pools are "com.delphix:async_destroy" and "com.delphix:empty_bpobj".
478 For more information read the new zpool-features(7) manual page.
479 Please refer to the "ZFS notes" section of this file for information
480 on upgrading boot ZFS pools.
483 The commit introducing bsd.compiler.mk breaks the traditional
484 building of kernels before this point. Add -m ${SRC}/share/mk
485 (for the right value of SRC) to your command lines to work
486 around; update your useland to a point after this; or use the
487 buildkernel/installkernel top-level targets. See also 20120829.
490 The IPFIREWALL_FORWARD kernel option has been removed. Its
491 functionality now turned on by default.
494 The random(4) support for the VIA hardware random number
495 generator (`PADLOCK') is no longer enabled unconditionally.
496 Add the PADLOCK_RNG option in the custom kernel config if
497 needed. The GENERIC kernels on i386 and amd64 do include the
498 option, so the change only affects the custom kernel
502 The amd64 kernel now uses xsetbv, xrstor instructions. To compile with
503 the traditional method, you must update your system with an installworld
504 before the kernel will build. The documented make buildkernel/installkernel
505 interfaces (coupled with fresh make kernel-toolchain) continue to work.
508 The sparc64 ZFS loader has been changed to no longer try to auto-
509 detect ZFS providers based on diskN aliases but now requires these
510 to be explicitly listed in the OFW boot-device environment variable.
513 Now unix domain sockets behave "as expected" on nullfs(5). Previously
514 nullfs(5) did not pass through all behaviours to the underlying layer,
515 as a result if we bound to a socket on the lower layer we could connect
516 only to the lower path; if we bound to the upper layer we could connect
517 only to the upper path. The new behavior is one can connect to both the
518 lower and the upper paths regardless what layer path one binds to.
521 The acpi_wmi(4) status device /dev/wmistat has been renamed to
525 A new VOP_ADVISE() was added to support posix_fadvise(2). All
526 filesystem modules must be recompiled.
529 The interface of the VOP_VPTOCNP(9) changed, now the returned
530 vnode shall be referenced, previously it was required to be
531 only held. All in-tree filesystems are converted.
537 The broken amd(4) driver has been replaced with esp(4) in the amd64,
538 i386 and pc98 GENERIC kernel configuration files.
541 This commit modifies vfs_register() so that it uses a hash
542 calculation to set vfc_typenum, which is enabled by default.
543 The first time a system is booted after this change, the
544 vfc_typenum values will change for all file systems. The
545 main effect of this is a change to the NFS server file handles
546 for file systems that use vfc_typenum in their fsid, such as ZFS.
547 It will, however, prevent vfc_typenum from changing when file
548 systems are loaded in a different order for subsequent reboots.
549 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf
550 until you are ready to remount all NFS clients after a reboot.
553 Bump the shared library version numbers for libraries that
554 do not use symbol versioning, have changed the ABI compared
555 to stable/8 and which shared library version was not bumped.
556 Done as part of 9.0-RELEASE cycle.
559 During the merge of Capsicum features, the fget(9) KPI was modified.
560 This may require the rebuilding of out-of-tree device drivers --
561 issues have been reported specifically with the nVidia device driver.
562 __FreeBSD_version is bumped to 900041.
564 Also, there is a period between 20110811 and 20110814 where the
565 special devices /dev/{stdin,stdout,stderr} did not work correctly.
566 Building world from a kernel during that window may not work.
569 The packet filter (pf) code has been updated to OpenBSD 4.5.
570 You need to update userland tools to be in sync with kernel.
571 This update breaks backward compatibility with earlier pfsync(4)
572 versions. Care must be taken when updating redundant firewall setups.
575 The following sysctls and tunables are retired on x86 platforms:
577 machdep.hlt_logical_cpus
578 The following sysctl is retired:
579 machdep.hyperthreading_allowed
580 The sysctls were supposed to provide a way to dynamically offline and
581 online selected CPUs on x86 platforms, but the implementation has not
582 been reliable especially with SCHED_ULE scheduler.
583 machdep.hyperthreading_allowed tunable is still available to ignore
584 hyperthreading CPUs at OS level.
585 Individual CPUs can be disabled using hint.lapic.X.disabled tunable,
586 where X is an APIC ID of a CPU. Be advised, though, that disabling
587 CPUs in non-uniform fashion will result in non-uniform topology and
588 may lead to sub-optimal system performance with SCHED_ULE, which is
592 cpumask_t type is retired and cpuset_t is used in order to describe
596 Changes to ifconfig(8) for dynamic address family detection mandate
597 that you are running a kernel of 20110525 or later. Make sure to
598 follow the update procedure to boot a new kernel before installing
602 Support for sun4v architecture is officially dropped
605 Several KPI breaking changes have been committed to the mii(4) layer,
606 the PHY drivers and consequently some Ethernet drivers using mii(4).
607 This means that miibus.ko and the modules of the affected Ethernet
608 drivers need to be recompiled.
610 Note to kernel developers: Given that the OUI bit reversion problem
611 was fixed as part of these changes all mii(4) commits related to OUIs,
612 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific
613 handling, no longer can be merged verbatim to stable/8 and previous
617 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci'
618 into their kernel configurations along with 'device pci'.
621 The default NFS client is now the new NFS client, so fstype "newnfs"
622 is now "nfs" and the regular/old NFS client is now fstype "oldnfs".
623 Although mounts via fstype "nfs" will usually work without userland
624 changes, it is recommended that the mount(8) and mount_nfs(8)
625 commands be rebuilt from sources and that a link to mount_nfs called
626 mount_oldnfs be created. The new client is compiled into the
627 kernel with "options NFSCL" and this is needed for diskless root
628 file systems. The GENERIC kernel configs have been changed to use
629 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER.
630 To use the regular/old client, you can "mount -t oldnfs ...". For
631 a diskless root file system, you must also include a line like:
633 vfs.root.mountfrom="oldnfs:"
635 in the boot/loader.conf on the root fs on the NFS server to make
636 a diskless root fs use the old client.
639 The GENERIC kernels for all architectures now default to the new
640 CAM-based ATA stack. It means that all legacy ATA drivers were
641 removed and replaced by respective CAM drivers. If you are using
642 ATA device names in /etc/fstab or other places, make sure to update
643 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY,
644 where 'Y's are the sequential numbers starting from zero for each type
645 in order of detection, unless configured otherwise with tunables,
646 see cam(4)). There will be symbolic links created in /dev/ to map
647 old adX devices to the respective adaY. They should provide basic
648 compatibility for file systems mounting in most cases, but they do
649 not support old user-level APIs and do not have respective providers
650 in GEOM. Consider using updated management tools with new device names.
652 It is possible to load devices ahci, ata, siis and mvs as modules,
653 but option ATA_CAM should remain in kernel configuration to make ata
654 module work as CAM driver supporting legacy ATA controllers. Device ata
655 still can be used in modular fashion (atacore + ...). Modules atadisk
656 and atapi* are not used and won't affect operation in ATA_CAM mode.
657 Note that to use CAM-based ATA kernel should include CAM devices
658 scbus, pass, da (or explicitly ada), cd and optionally others. All of
659 them are parts of the cam module.
661 ataraid(4) functionality is now supported by the RAID GEOM class.
662 To use it you can load geom_raid kernel module and use graid(8) tool
663 for management. Instead of /dev/arX device names, use /dev/raid/rX.
665 No kernel config options or code have been removed, so if a problem
666 arises, please report it and optionally revert to the old ATA stack.
667 In order to do it you can remove from the kernel config:
672 , and instead add back:
673 device atadisk # ATA disk drives
674 device ataraid # ATA RAID drives
675 device atapicd # ATAPI CDROM drives
676 device atapifd # ATAPI floppy drives
677 device atapist # ATAPI tape drives
680 The default NFS server has been changed to the new server, which
681 was referred to as the experimental server. If you need to switch
682 back to the old NFS server, you must now put the "-o" option on
683 both the mountd and nfsd commands. This can be done using the
684 mountd_flags and nfs_server_flags rc.conf variables until an
685 update to the rc scripts is committed, which is coming soon.
688 The GNU Objective-C runtime library (libobjc), and other Objective-C
689 related components have been removed from the base system. If you
690 require an Objective-C library, please use one of the available ports.
693 ath(4) has been split into bus- and device- modules. if_ath contains
694 the HAL, the TX rate control and the network device code. if_ath_pci
695 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb
696 contains the AHB glue. Users need to load both if_ath_pci and if_ath
697 in order to use ath on everything else.
699 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only
700 need to load if_ath and if_ath_pci for ath(4) operation.
703 As part of the replacement of sysinstall, the process of building
704 release media has changed significantly. For details, please re-read
705 release(7), which has been updated to reflect the new build process.
708 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This
709 is the last available version under GPLv2. It brings a number of new
710 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE
711 4.1 and SSE 4.2), better support for powerpc64, a number of new
712 directives, and lots of other small improvements. See the ChangeLog
713 file in contrib/binutils for the full details.
716 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868
717 compliant, and will now use half of hash for authentication.
718 This will break interoperability with all stacks (including all
719 actual FreeBSD versions) who implement
720 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for
722 The only workaround with such peers is to use another HMAC
723 algorithm for IPsec ("phase 2") authentication.
726 Remove the uio_yield prototype and symbol. This function has
727 been misnamed since it was introduced and should not be
728 globally exposed with this name. The equivalent functionality
729 is now available using kern_yield(curthread->td_user_pri).
730 The function remains undocumented.
733 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers,
734 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking
735 for scalar sysctls is defined but disabled. Code that needs
736 UQUAD to pass the type checking that must compile on older
737 systems where the define is not present can check against
738 __FreeBSD_version >= 900030.
740 The system dialog(1) has been replaced with a new version previously
741 in ports as devel/cdialog. dialog(1) is mostly command-line compatible
742 with the previous version, but the libdialog associated with it has
743 a largely incompatible API. As such, the original version of libdialog
744 will be kept temporarily as libodialog, until its base system consumers
745 are replaced or updated. Bump __FreeBSD_version to 900030.
748 If you are trying to run make universe on a -stable system, and you get
749 the following warning:
750 "Makefile", line 356: "Target architecture for i386/conf/GENERIC
751 unknown. config(8) likely too old."
752 or something similar to it, then you must upgrade your -stable system
753 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in
754 stable/8) or build the config from the latest stable/8 branch and
755 install it on your system.
757 Prior to this date, building a current universe on 8-stable system from
758 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing
759 error in the first kernel build phase. A new config on those old
760 systems will fix that problem for older versions of -current.
763 The TCP stack has been modified to allow Khelp modules to interact with
764 it via helper hook points and store per-connection data in the TCP
765 control block. Bump __FreeBSD_version to 900029. User space tools that
766 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to
770 Generic IEEE 802.3 annex 31B full duplex flow control support has been
771 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along
772 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted
773 to take advantage of it instead of using custom implementations. This
774 means that these drivers now no longer unconditionally advertise
775 support for flow control but only do so if flow control is a selected
776 media option. This was implemented in the generic support that way in
777 order to allow flow control to be switched on and off via ifconfig(8)
778 with the PHY specific default to typically off in order to protect
779 from unwanted effects. Consequently, if you used flow control with
780 one of the above mentioned drivers you now need to explicitly enable
782 ifconfig bge0 media auto mediaopt flowcontrol
784 Along with the above mentioned changes generic support for setting
785 1000baseT master mode also has been added and brgphy(4), ciphy(4),
786 e1000phy(4) as well as ip1000phy(4) have been converted to take
787 advantage of it. This means that these drivers now no longer take the
788 link0 parameter for selecting master mode but the master media option
789 has to be used instead, for example like in the following:
790 ifconfig bge0 media 1000baseT mediaopt full-duplex,master
792 Selection of master mode now is also available with all other PHY
793 drivers supporting 1000baseT.
796 The TCP stack has received a significant update to add support for
797 modularised congestion control and generally improve the clarity of
798 congestion control decisions. Bump __FreeBSD_version to 900025. User
799 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g.
800 sockstat) need to be recompiled.
803 The man(1) utility has been replaced by a new version that no longer
804 uses /etc/manpath.config. Please consult man.conf(5) for how to
805 migrate local entries to the new format.
808 The copyright strings printed by login(1) and sshd(8) at the time of a
809 new connection have been removed to follow other operating systems and
813 A workaround for a fixed ld bug has been removed in kernel code,
814 so make sure that your system ld is built from sources after
815 revision 210245 from 2010-07-19 (r211583 if building head kernel
816 on stable/8, r211584 for stable/7; both from 2010-08-21).
817 A symptom of incorrect ld version is different addresses for
818 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules.
821 The $ipv6_prefer variable in rc.conf(5) has been split into
822 $ip6addrctl_policy and $ipv6_activate_all_interfaces.
824 The $ip6addrctl_policy is a variable to choose a pre-defined
825 address selection policy set by ip6addrctl(8). A value
826 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The
829 The $ipv6_activate_all_interfaces specifies whether IFDISABLED
830 flag (see an entry of 20090926) is set on an interface with no
831 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for
832 security reason. If you want IPv6 link-local address on all
833 interfaces by default, set this to "YES".
835 The old ipv6_prefer="YES" is equivalent to
836 ipv6_activate_all_interfaces="YES" and
837 ip6addrctl_policy="ipv6_prefer".
840 DTrace has grown support for userland tracing. Due to this, DTrace is
841 now i386 and amd64 only.
842 dtruss(1) is now installed by default on those systems and a new
843 kernel module is needed for userland tracing: fasttrap.
844 No changes to your kernel config file are necessary to enable
845 userland tracing, but you might consider adding 'STRIP=' and
846 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want
847 to have informative userland stack traces in DTrace (ustack).
850 The acpi_aiboost(4) driver has been removed in favor of the new
851 aibs(4) driver. You should update your kernel configuration file.
854 BSD grep has been imported to the base system and it is built by
855 default. It is completely BSD licensed, highly GNU-compatible, uses
856 less memory than its GNU counterpart and has a small codebase.
857 However, it is slower than its GNU counterpart, which is mostly
858 noticeable for larger searches, for smaller ones it is measurable
859 but not significant. The reason is complex, the most important factor
860 is that we lack a modern and efficient regex library and GNU
861 overcomes this by optimizing the searches internally. Future work
862 on improving the regex performance is planned, for the meantime,
863 users that need better performance, can build GNU grep instead by
864 setting the WITH_GNU_GREP knob.
867 Due to the import of powerpc64 support, all existing powerpc kernel
868 configuration files must be updated with a machine directive like this:
869 machine powerpc powerpc
871 In addition, an updated config(8) is required to build powerpc kernels
875 A new version of ZFS (version 15) has been merged to -HEAD.
876 This version uses a python library for the following subcommands:
877 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
878 For full functionality of these commands the following port must
879 be installed: sysutils/py-zfs
882 'vm_page's are now hashed by physical address to an array of mutexes.
883 Currently this is only used to serialize access to hold_count. Over
884 time the page queue mutex will be peeled away. This changes the size
885 of pmap on every architecture. And requires all callers of vm_page_hold
886 and vm_page_unhold to be updated.
889 WITH_CTF can now be specified in src.conf (not recommended, there
890 are some problems with static executables), make.conf (would also
891 affect ports which do not use GNU make and do not override the
892 compile targets) or in the kernel config (via "makeoptions
894 When WITH_CTF was specified there before this was silently ignored,
895 so make sure that WITH_CTF is not used in places which could lead
896 to unwanted behavior.
899 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
900 to allow 32-bit compatibility on non-x86 platforms. All kernel
901 configurations on amd64 and ia64 platforms using these options must
902 be modified accordingly.
905 The utmp user accounting database has been replaced with utmpx,
906 the user accounting interface standardized by POSIX.
907 Unfortunately the semantics of utmp and utmpx don't match,
908 making it practically impossible to support both interfaces.
909 The user accounting database is used by tools like finger(1),
910 last(1), talk(1), w(1) and ac(8).
912 All applications in the base system use utmpx. This means only
913 local binaries (e.g. from the ports tree) may still use these
914 utmp database files. These applications must be rebuilt to make
917 After the system has been upgraded, it is safe to remove the old
918 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*),
919 assuming their contents is of no importance anymore. Old wtmp
920 databases can only be used by last(1) and ac(8) after they have
921 been converted to the new format using wtmpcvt(1).
924 Introduce the kernel thread "deadlock resolver" (which can be enabled
925 via the DEADLKRES option, see NOTES for more details) and the
926 sleepq_type() function for sleepqueues.
929 The rc.firewall and rc.firewall6 were unified, and
930 rc.firewall6 and rc.d/ip6fw were removed.
931 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
932 variables are obsoleted. Instead, the following new rc
933 variables are added to rc.d/ipfw:
935 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
936 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
937 firewall_simple_onet_ipv6, firewall_trusted_ipv6
939 The meanings correspond to the relevant IPv4 variables.
945 The default terminal emulation for syscons(4) has been changed
946 from cons25 to xterm on all platforms except pc98. This means
947 that the /etc/ttys file needs to be updated to ensure correct
948 operation of applications on the console.
950 The terminal emulation style can be toggled per window by using
951 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration
952 options can be used to change the compile-time default back to
955 To prevent graphical artifacts, make sure the TERM environment
956 variable is set to match the terminal emulation that is being
957 performed by syscons(4).
960 The layout of the structure ieee80211req_scan_result has changed.
961 Applications that require wireless scan results (e.g. ifconfig(8))
962 from net80211 need to be recompiled.
964 Applications such as wpa_supplicant(8) may require a full world
965 build without using NO_CLEAN in order to get synchronized with the
969 The iwn(4) driver has been updated to support the 5000 and 5150 series.
970 There's one kernel module for each firmware. Adding "device iwnfw"
971 to the kernel configuration file means including all three firmware
972 images inside the kernel. If you want to include just the one for
973 your wireless card, use the devices iwn4965fw, iwn5000fw or
977 The rc.d/network_ipv6, IPv6 configuration script has been integrated
978 into rc.d/netif. The changes are the following:
980 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF
981 for IPv4. For aliases, $ifconfig_IF_aliasN should be used.
982 Note that both variables need the "inet6" keyword at the head.
984 Do not set $ipv6_network_interfaces manually if you do not
985 understand what you are doing. It is not needed in most cases.
987 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but
990 2. $ipv6_enable is obsolete. Use $ipv6_prefer and
991 "inet6 accept_rtadv" keyword in ifconfig(8) instead.
993 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and
994 all configured interfaces have "inet6 accept_rtadv" in the
995 $ifconfig_IF_ipv6. These are for backward compatibility.
997 3. A new variable $ipv6_prefer has been added. If NO, IPv6
998 functionality of interfaces with no corresponding
999 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag,
1000 and the default address selection policy of ip6addrctl(8)
1001 is the IPv4-preferred one (see rc.d/ip6addrctl for more details).
1002 Note that if you want to configure IPv6 functionality on the
1003 disabled interfaces after boot, first you need to clear the flag by
1004 using ifconfig(8) like:
1006 ifconfig em0 inet6 -ifdisabled
1008 If YES, the default address selection policy is set as
1011 The default value of $ipv6_prefer is NO.
1013 4. If your system need to receive Router Advertisement messages,
1014 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8)
1015 scripts automatically invoke rtsol(8) when the interface becomes
1016 UP. The Router Advertisement messages are used for SLAAC
1017 (State-Less Address AutoConfiguration).
1020 802.11s D3.03 support was committed. This is incompatible with the
1021 previous code, which was based on D3.0.
1024 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value
1025 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to
1026 control whether accepting Router Advertisement messages or not.
1027 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and
1028 a sysctl variable net.inet6.ip6.auto_linklocal is its default value.
1029 The ifconfig(8) utility now supports these flags.
1032 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
1033 mount(8) and -a option for df(1) to see them.
1036 The old tunable hw.bus.devctl_disable has been superseded by
1037 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be
1038 replaced by hw.bus.devctl_queue=0. The default for this new tunable
1042 Remove the option STOP_NMI. The default action is now to use NMI only
1043 for KDB via the newly introduced function stop_cpus_hard() and
1044 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64.
1047 The stable/8 branch created in subversion. This corresponds to the
1048 RELENG_8 branch in CVS.
1051 Bump the shared library version numbers for all libraries that do not
1052 use symbol versioning as part of the 8.0-RELEASE cycle. Bump
1053 __FreeBSD_version to 800105.
1056 Due to changes in the implementation of virtual network stack support,
1057 all network-related kernel modules must be recompiled. As this change
1058 breaks the ABI, bump __FreeBSD_version to 800104.
1061 The TOE interface to the TCP syncache has been modified to remove
1062 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack.
1063 The cxgb driver is the only TOE consumer affected by this change, and
1064 needs to be recompiled along with the kernel. As this change breaks
1065 the ABI, bump __FreeBSD_version to 800103.
1068 Padding has been added to struct tcpcb, sackhint and tcpstat in
1069 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
1070 maintaining the ABI. However, this change breaks the ABI, so bump
1071 __FreeBSD_version to 800102. User space tools that rely on the size of
1072 any of these structs (e.g. sockstat) need to be recompiled.
1075 The NFS_LEGACYRPC option has been removed along with the old kernel
1076 RPC implementation that this option selected. Kernel configurations
1077 may need to be adjusted.
1080 The network interface device nodes at /dev/net/<interface> have been
1081 removed. All ioctl operations can be performed the normal way using
1082 routing sockets. The kqueue functionality can generally be replaced
1083 with routing sockets.
1086 The documentation from the FreeBSD Documentation Project (Handbook,
1087 FAQ, etc.) is now installed via packages by sysinstall(8) and under
1088 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc.
1091 The ABI of various structures related to the SYSV IPC API have been
1092 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel
1093 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to
1097 Layout of struct vnet has changed as routing related variables were
1098 moved to their own Vimage module. Modules need to be recompiled. Bump
1099 __FreeBSD_version to 800099.
1102 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024
1103 respectively. As long as no more than 16 groups per process are used,
1104 no changes should be visible. When more than 16 groups are used, old
1105 binaries may fail if they call getgroups() or getgrouplist() with
1106 statically sized storage. Recompiling will work around this, but
1107 applications should be modified to use dynamically allocated storage
1108 for group arrays as POSIX.1-2008 does not cap an implementation's
1109 number of supported groups at NGROUPS_MAX+1 as previous versions did.
1111 NFS and portalfs mounts may also be affected as the list of groups is
1112 truncated to 16. Users of NFS who use more than 16 groups, should
1113 take care that negative group permissions are not used on the exported
1114 file systems as they will not be reliable unless a GSSAPI based
1115 authentication method is used.
1118 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This
1119 option compiles in the support for adaptive spinning for lockmgrs
1120 which want to enable it. The lockinit() function now accepts the flag
1121 LK_ADAPTIVE in order to make the lock object subject to adaptive
1122 spinning when both held in write and read mode.
1125 The layout of the structure returned by IEEE80211_IOC_STA_INFO has
1126 changed. User applications that use this ioctl need to be rebuilt.
1129 The layout of struct thread has changed. Kernel and modules need to
1133 The layout of structs ifnet, domain, protosw and vnet_net has changed.
1134 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097.
1137 window(1) has been removed from the base system. It can now be
1138 installed from ports. The port is called misc/window.
1141 The way we are storing and accessing `routing table' entries has
1142 changed. Programs reading the FIB, like netstat, need to be
1146 A new netisr implementation has been added for FreeBSD 8. Network
1147 file system modules, such as igmp, ipdivert, and others, should be
1149 Bump __FreeBSD_version to 800096.
1152 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no
1156 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
1157 Bump __FreeBSD_version to 800094.
1160 Add mnt_xflag field to 'struct mount'. File system modules need to be
1162 Bump __FreeBSD_version to 800093.
1165 The compiling option ADAPTIVE_SX has been retired while it has been
1166 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
1167 The KPI for sx_init_flags() changes as accepting flags:
1168 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has
1169 been introduced in order to handle the reversed logic.
1170 Bump __FreeBSD_version to 800092.
1173 Add support for hierarchical jails. Remove global securelevel.
1174 Bump __FreeBSD_version to 800091.
1177 The layout of struct vnet_net has changed, therefore modules
1179 Bump __FreeBSD_version to 800090.
1182 The newly imported zic(8) produces a new format in the output. Please
1183 run tzsetup(8) to install the newly created data to /etc/localtime.
1186 The sysctl tree for the usb stack has renamed from hw.usb2.* to
1187 hw.usb.* and is now consistent again with previous releases.
1190 802.11 monitor mode support was revised and driver api's were changed.
1191 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead
1192 of DLT_IEEE802_11. No user-visible data structures were changed but
1193 applications that use DLT_IEEE802_11 may require changes.
1194 Bump __FreeBSD_version to 800088.
1197 The layout of the following structs has changed: sysctl_oid,
1198 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
1199 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
1200 panics may be experienced. World rebuild is required for
1201 correctly checking networking state from userland.
1202 Bump __FreeBSD_version to 800085.
1205 MLDv2 and Source-Specific Multicast (SSM) have been merged
1206 to the IPv6 stack. VIMAGE hooks are in but not yet used.
1207 The implementation of SSM within FreeBSD's IPv6 stack closely
1208 follows the IPv4 implementation.
1210 For kernel developers:
1212 * The most important changes are that the ip6_output() and
1213 ip6_input() paths no longer take the IN6_MULTI_LOCK,
1214 and this lock has been downgraded to a non-recursive mutex.
1216 * As with the changes to the IPv4 stack to support SSM, filtering
1217 of inbound multicast traffic must now be performed by transport
1218 protocols within the IPv6 stack. This does not apply to TCP and
1219 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
1221 * The KPIs used by IPv6 multicast are similar to those used by
1222 the IPv4 stack, with the following differences:
1223 * im6o_mc_filter() is analogous to imo_multicast_filter().
1224 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
1225 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
1226 * IN6_LOOKUP_MULTI() has been deprecated and removed.
1227 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
1228 for MLDv1 have an additional 'timer' argument which is used to
1229 jitter the initial membership report for the solicited-node
1230 multicast membership on-link.
1231 * This is not strictly needed for MLDv2, which already jitters
1232 its report transmissions. However, the 'timer' argument is
1233 preserved in case MLDv1 is active on the interface.
1235 * The KAME linked-list based IPv6 membership implementation has
1236 been refactored to use a vector similar to that used by the IPv4
1238 Code which maintains a list of its own multicast memberships
1239 internally, e.g. carp, has been updated to reflect the new
1242 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
1243 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
1244 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
1245 implementation constraint which needs to be addressed in HEAD.
1247 For application developers:
1249 * The changes are broadly similar to those made for the IPv4
1252 * The use of IPv4 and IPv6 multicast socket options on the same
1253 socket, using mapped addresses, HAS NOT been tested or supported.
1255 * There are a number of issues with the implementation of various
1256 IPv6 multicast APIs which need to be resolved in the API surface
1257 before the implementation is fully compatible with KAME userland
1258 use, and these are mostly to do with interface index treatment.
1260 * The literature available discusses the use of either the delta / ASM
1261 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
1262 using setsourcefilter(3)/getsourcefilter(3). For more information
1263 please refer to RFC 3768, 'Socket Interface Extensions for
1264 Multicast Source Filters'.
1266 * Applications which use the published RFC 3678 APIs should be fine.
1268 For systems administrators:
1270 * The mtest(8) utility has been refactored to support IPv6, in
1271 addition to IPv4. Interface addresses are no longer accepted
1272 as arguments, their names must be used instead. The utility
1273 will map the interface name to its first IPv4 address as
1274 returned by getifaddrs(3).
1276 * The ifmcstat(8) utility has also been updated to print the MLDv2
1277 endpoint state and source filter lists via sysctl(3).
1279 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
1280 loopback of IPv6 multicast datagrams by default; it defaults to 1
1281 to preserve the existing behaviour. Disabling multicast loopback is
1282 recommended for optimal system performance.
1284 * The IPv6 MROUTING code has been changed to examine this sysctl
1285 instead of attempting to perform a group lookup before looping
1286 back forwarded datagrams.
1288 Bump __FreeBSD_version to 800084.
1291 Implement low-level Bluetooth HCI API.
1292 Bump __FreeBSD_version to 800083.
1295 The layout of struct malloc_type, used by modules to register new
1296 memory allocation types, has changed. Most modules will need to
1297 be rebuilt or panics may be experienced.
1298 Bump __FreeBSD_version to 800081.
1301 Anticipate overflowing inp_flags - add inp_flags2.
1302 This changes most offsets in inpcb, so checking v4 connection
1303 state will require a world rebuild.
1304 Bump __FreeBSD_version to 800080.
1307 Add an llentry to struct route and struct route_in6. Modules
1308 embedding a struct route will need to be recompiled.
1309 Bump __FreeBSD_version to 800079.
1312 The size of rt_metrics_lite and by extension rtentry has changed.
1313 Networking administration apps will need to be recompiled.
1314 The route command now supports show as an alias for get, weighting
1315 of routes, sticky and nostick flags to alter the behavior of stateful
1317 Bump __FreeBSD_version to 800078.
1320 Do not use Giant for kbdmux(4) locking. This is wrong and
1321 apparently causing more problems than it solves. This will
1322 re-open the issue where interrupt handlers may race with
1323 kbdmux(4) in polling mode. Typical symptoms include (but
1324 not limited to) duplicated and/or missing characters when
1325 low level console functions (such as gets) are used while
1326 interrupts are enabled (for example geli password prompt,
1327 mountroot prompt etc.). Disabling kbdmux(4) may help.
1330 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
1331 kernel modules referencing any of the above need to be recompiled.
1332 Bump __FreeBSD_version to 800075.
1335 GEOM_PART has become the default partition slicer for storage devices,
1336 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
1337 introduces some changes:
1339 MSDOS/EBR: the devices created from MSDOS extended partition entries
1340 (EBR) can be named differently than with GEOM_MBR and are now symlinks
1341 to devices with offset-based names. fstabs may need to be modified.
1343 BSD: the "geometry does not match label" warning is harmless in most
1344 cases but it points to problems in file system misalignment with
1345 disk geometry. The "c" partition is now implicit, covers the whole
1346 top-level drive and cannot be (mis)used by users.
1348 General: Kernel dumps are now not allowed to be written to devices
1349 whose partition types indicate they are meant to be used for file
1350 systems (or, in case of MSDOS partitions, as something else than
1353 Most of these changes date approximately from 200812.
1356 The uscanner(4) driver has been removed from the kernel. This follows
1357 Linux removing theirs in 2.6 and making libusb the default interface
1358 (supported by sane).
1361 The multicast forwarding code has been cleaned up. netstat(1)
1362 only relies on KVM now for printing bandwidth upcall meters.
1363 The IPv4 and IPv6 modules are split into ip_mroute_mod and
1364 ip6_mroute_mod respectively. The config(5) options for statically
1365 compiling this code remain the same, i.e. 'options MROUTING'.
1368 Support for the IFF_NEEDSGIANT network interface flag has been
1369 removed, which means that non-MPSAFE network device drivers are no
1370 longer supported. In particular, if_ar, if_sr, and network device
1371 drivers from the old (legacy) USB stack can no longer be built or
1375 POSIX.1 Native Language Support (NLS) has been enabled in libc and
1376 a bunch of new language catalog files have also been added.
1377 This means that some common libc messages are now localized and
1378 they depend on the LC_MESSAGES environmental variable.
1381 The k8temp(4) driver has been renamed to amdtemp(4) since
1382 support for Family 10 and Family 11 CPU families was added.
1385 IGMPv3 and Source-Specific Multicast (SSM) have been merged
1386 to the IPv4 stack. VIMAGE hooks are in but not yet used.
1388 For kernel developers, the most important changes are that the
1389 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
1390 and this lock has been downgraded to a non-recursive mutex.
1392 Transport protocols (UDP, Raw IP) are now responsible for filtering
1393 inbound multicast traffic according to group membership and source
1394 filters. The imo_multicast_filter() KPI exists for this purpose.
1395 Transports which do not use multicast (SCTP, TCP) already reject
1396 multicast by default. Forwarding and receive performance may improve
1397 as a mutex acquisition is no longer needed in the ip_input()
1398 low-level input path. in_addmulti() and in_delmulti() are shimmed
1399 to new KPIs which exist to support SSM in-kernel.
1401 For application developers, it is recommended that loopback of
1402 multicast datagrams be disabled for best performance, as this
1403 will still cause the lock to be taken for each looped-back
1404 datagram transmission. The net.inet.ip.mcast.loop sysctl may
1405 be tuned to 0 to disable loopback by default; it defaults to 1
1406 to preserve the existing behaviour.
1408 For systems administrators, to obtain best performance with
1409 multicast reception and multiple groups, it is always recommended
1410 that a card with a suitably precise hash filter is used. Hash
1411 collisions will still result in the lock being taken within the
1412 transport protocol input path to check group membership.
1414 If deploying FreeBSD in an environment with IGMP snooping switches,
1415 it is recommended that the net.inet.igmp.sendlocal sysctl remain
1416 enabled; this forces 224.0.0.0/24 group membership to be announced
1419 The size of 'struct igmpstat' has changed; netstat needs to be
1420 recompiled to reflect this.
1421 Bump __FreeBSD_version to 800070.
1424 libusb20.so.1 is now installed as libusb.so.1 and the ports system
1425 updated to use it. This requires a buildworld/installworld in order to
1426 update the library and dependencies (usbconfig, etc). Its advisable to
1427 rebuild all ports which uses libusb. More specific directions are given
1428 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
1429 libusb are no longer required and can be removed.
1432 A workaround is committed to allow the creation of System V shared
1433 memory segment of size > 2 GB on the 64-bit architectures.
1434 Due to a limitation of the existing ABI, the shm_segsz member
1435 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
1436 wrong for large segments. Note that limits must be explicitly
1437 raised to allow such segments to be created.
1440 The layout of struct ifnet has changed, requiring a rebuild of all
1441 network device driver modules.
1444 The /dev handling for the new USB stack has changed, a
1445 buildworld/installworld is required for libusb20.
1448 The new USB2 stack has now been permanently moved in and all kernel and
1449 module names reverted to their previous values (eg, usb, ehci, ohci,
1450 ums, ...). The old usb stack can be compiled in by prefixing the name
1451 with the letter 'o', the old usb modules have been removed.
1452 Updating entry 20090216 for xorg and 20090215 for libmap may still
1456 The rc.conf(5) option if_up_delay has been renamed to
1457 defaultroute_delay to better reflect its purpose. If you have
1458 customized this setting in /etc/rc.conf you need to update it to
1462 xorg 7.4 wants to configure its input devices via hald which does not
1463 yet work with USB2. If the keyboard/mouse does not work in xorg then
1465 Option "AllowEmptyInput" "off"
1466 to your ServerLayout section. This will cause X to use the configured
1467 kbd and mouse sections from your xorg.conf.
1470 The GENERIC kernels for all architectures now default to the new USB2
1471 stack. No kernel config options or code have been removed so if a
1472 problem arises please report it and optionally revert to the old USB
1473 stack. If you are loading USB kernel modules or have a custom kernel
1474 that includes GENERIC then ensure that usb names are also changed over,
1475 eg uftdi -> usb2_serial_ftdi.
1477 Older programs linked against the ports libusb 0.1 need to be
1478 redirected to the new stack's libusb20. /etc/libmap.conf can
1480 # Map old usb library to new one for usb2 stack
1481 libusb-0.1.so.8 libusb20.so.1
1484 All USB ethernet devices now attach as interfaces under the name ueN
1485 (eg. ue0). This is to provide a predictable name as vendors often
1486 change usb chipsets in a product without notice.
1489 The ichsmb(4) driver has been changed to require SMBus slave
1490 addresses be left-justified (xxxxxxx0b) rather than right-justified.
1491 All of the other SMBus controller drivers require left-justified
1492 slave addresses, so this change makes all the drivers provide the
1496 INET6 statistics (struct ip6stat) was updated.
1497 netstat(1) needs to be recompiled.
1500 NTFS has been removed from GENERIC kernel on amd64 to match
1501 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
1502 will load ntfs.ko module automatically when NTFS support is
1503 actually needed, unless ntfs.ko is not installed or security
1504 level prohibits loading kernel modules. If either is the case,
1505 "options NTFS" has to be added into kernel config.
1508 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
1509 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
1510 800061. User space tools that rely on the size of struct tcpcb in
1511 tcp_var.h (e.g. sockstat) need to be recompiled.
1514 ng_tty(4) module updated to match the new TTY subsystem.
1515 Due to API change, user-level applications must be updated.
1516 New API support added to mpd5 CVS and expected to be present
1517 in next mpd5.3 release.
1520 With __FreeBSD_version 800060 the makefs tool is part of
1521 the base system (it was a port).
1524 The afdata and ifnet locks have been changed from mutexes to
1525 rwlocks, network modules will need to be re-compiled.
1528 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
1529 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
1530 The new code reduced struct rtentry{} by 16 bytes on 32-bit
1531 architecture and 40 bytes on 64-bit architecture. The userland
1532 applications "arp" and "ndp" have been updated accordingly.
1533 The output from "netstat -r" shows only routing entries and
1534 none of the L2 information.
1537 __FreeBSD_version 800057 marks the switchover from the
1538 binary ath hal to source code. Users must add the line:
1540 options AH_SUPPORT_AR5416
1542 to their kernel config files when specifying:
1546 The ath_hal module no longer exists; the code is now compiled
1547 together with the driver in the ath module. It is now
1548 possible to tailor chip support (i.e. reduce the set of chips
1549 and thereby the code size); consult ath_hal(4) for details.
1552 __FreeBSD_version 800054 adds memory barriers to
1553 <machine/atomic.h>, new interfaces to ifnet to facilitate
1554 multiple hardware transmit queues for cards that support
1555 them, and a lock-less ring-buffer implementation to
1556 enable drivers to more efficiently manage queueing of
1560 A new version of ZFS (version 13) has been merged to -HEAD.
1561 This version has zpool attribute "listsnapshots" off by
1562 default, which means "zfs list" does not show snapshots,
1563 and is the same as Solaris behavior.
1566 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
1569 The uhci, ohci, ehci and slhci USB Host controller drivers have
1570 been put into separate modules. If you load the usb module
1571 separately through loader.conf you will need to load the
1572 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
1573 controller add the following to loader.conf:
1579 The ABI used by the PMC toolset has changed. Please keep
1580 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
1584 atapci kernel module now includes only generic PCI ATA
1585 driver. AHCI driver moved to ataahci kernel module.
1586 All vendor-specific code moved into separate kernel modules:
1587 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
1588 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
1589 atamarvell, atamicron, atanational, atanetcell, atanvidia,
1590 atapromise, ataserverworks, atasiliconimage, atasis, atavia
1593 The TTY subsystem of the kernel has been replaced by a new
1594 implementation, which provides better scalability and an
1595 improved driver model. Most common drivers have been migrated to
1596 the new TTY subsystem, while others have not. The following
1597 drivers have not yet been ported to the new TTY layer:
1600 cy, digi, rc, rp, sio
1606 ng_h4, ng_tty, ppp, sl, snp
1608 Adding these drivers to your kernel configuration file shall
1609 cause compilation to fail.
1612 ntpd has been upgraded to 4.2.4p5.
1615 OpenSSH has been upgraded to 5.1p1.
1617 For many years, FreeBSD's version of OpenSSH preferred DSA
1618 over RSA for host and user authentication keys. With this
1619 upgrade, we've switched to the vendor's default of RSA over
1620 DSA. This may cause upgraded clients to warn about unknown
1621 host keys even for previously known hosts. Users should
1622 follow the usual procedure for verifying host keys before
1623 accepting the RSA key.
1625 This can be circumvented by setting the "HostKeyAlgorithms"
1626 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
1629 Please note that the sequence of keys offered for
1630 authentication has been changed as well. You may want to
1631 specify IdentityFile in a different order to revert this
1635 The sio(4) driver has been removed from the i386 and amd64
1636 kernel configuration files. This means uart(4) is now the
1637 default serial port driver on those platforms as well.
1639 To prevent collisions with the sio(4) driver, the uart(4) driver
1640 uses different names for its device nodes. This means the
1641 onboard serial port will now most likely be called "ttyu0"
1642 instead of "ttyd0". You may need to reconfigure applications to
1643 use the new device names.
1645 When using the serial port as a boot console, be sure to update
1646 /boot/device.hints and /etc/ttys before booting the new kernel.
1647 If you forget to do so, you can still manually specify the hints
1648 at the loader prompt:
1650 set hint.uart.0.at="isa"
1651 set hint.uart.0.port="0x3F8"
1652 set hint.uart.0.flags="0x10"
1653 set hint.uart.0.irq="4"
1657 The gpt(8) utility has been removed. Use gpart(8) to partition
1661 The version that Linuxulator emulates was changed from 2.4.2
1662 to 2.6.16. If you experience any problems with Linux binaries
1663 please try to set sysctl compat.linux.osrelease to 2.4.2 and
1664 if it fixes the problem contact emulation mailing list.
1667 ISDN4BSD (I4B) was removed from the src tree. You may need to
1668 update a your kernel configuration and remove relevant entries.
1671 I have checked in code to support multiple routing tables.
1672 See the man pages setfib(1) and setfib(2).
1673 This is a hopefully backwards compatible version,
1674 but to make use of it you need to compile your kernel
1675 with options ROUTETABLES=2 (or more up to 16).
1678 The 802.11 wireless support was redone to enable multi-bss
1679 operation on devices that are capable. The underlying device
1680 is no longer used directly but instead wlanX devices are
1681 cloned with ifconfig. This requires changes to rc.conf files.
1682 For example, change:
1683 ifconfig_ath0="WPA DHCP"
1686 ifconfig_wlan0="WPA DHCP"
1687 see rc.conf(5) for more details. In addition, mergemaster of
1688 /etc/rc.d is highly recommended. Simultaneous update of userland
1689 and kernel wouldn't hurt either.
1691 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
1692 modules were merged into the base wlan module. All references
1693 to these modules (e.g. in kernel config files) must be removed.
1696 psm(4) has gained write(2) support in native operation level.
1697 Arbitrary commands can be written to /dev/psm%d and status can
1698 be read back from it. Therefore, an application is responsible
1699 for status validation and error recovery. It is a no-op in
1700 other operation levels.
1703 Support for KSE threading has been removed from the kernel. To
1704 run legacy applications linked against KSE libmap.conf may
1705 be used. The following libmap.conf may be used to ensure
1706 compatibility with any prior release:
1708 libpthread.so.1 libthr.so.1
1709 libpthread.so.2 libthr.so.2
1710 libkse.so.3 libthr.so.3
1713 The layout of struct vmspace has changed. This affects libkvm
1714 and any executables that link against libkvm and use the
1715 kvm_getprocs() function. In particular, but not exclusively,
1716 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
1717 The effects are minimal, but it's advisable to upgrade world
1721 The latest em driver no longer has support in it for the
1722 82575 adapter, this is now moved to the igb driver. The
1723 split was done to make new features that are incompatible
1724 with older hardware easier to do.
1727 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
1728 likewise the kernel option is now GEOM_LINUX_LVM.
1731 The default NFS mount mode has changed from UDP to TCP for
1732 increased reliability. If you rely on (insecurely) NFS
1733 mounting across a firewall you may need to update your
1737 Belatedly note the addition of m_collapse for compacting
1741 The fts(3) structures have been changed to use adequate
1742 integer types for their members and so to be able to cope
1743 with huge file trees. The old fts(3) ABI is preserved
1744 through symbol versioning in libc, so third-party binaries
1745 using fts(3) should still work, although they will not take
1746 advantage of the extended types. At the same time, some
1747 third-party software might fail to build after this change
1748 due to unportable assumptions made in its source code about
1749 fts(3) structure members. Such software should be fixed
1750 by its vendor or, in the worst case, in the ports tree.
1751 FreeBSD_version 800015 marks this change for the unlikely
1752 case that a portable fix is impossible.
1755 To upgrade to -current after this date, you must be running
1756 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
1757 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
1760 The ADAPTIVE_GIANT kernel option has been retired because its
1761 functionality is the default now.
1764 The AT keyboard emulation of sunkbd(4) has been turned on
1765 by default. In order to make the special symbols of the Sun
1766 keyboards driven by sunkbd(4) work under X these now have
1767 to be configured the same way as Sun USB keyboards driven
1768 by ukbd(4) (which also does AT keyboard emulation), f.e.:
1770 Option "XkbLayout" "us"
1771 Option "XkbRules" "xorg"
1772 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
1775 It has been decided that it is desirable to provide ABI
1776 backwards compatibility to the FreeBSD 4/5/6 versions of the
1777 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
1778 broken with the introduction of PCI domain support (see the
1779 20070930 entry). Unfortunately, this required the ABI of
1780 PCIOCGETCONF to be broken again in order to be able to
1781 provide backwards compatibility to the old version of that
1782 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
1783 again. As for prominent ports this affects neither pciutils
1784 nor xorg-server this time, the hal port needs to be rebuilt
1788 The misnamed kthread_create() and friends have been renamed
1789 to kproc_create() etc. Many of the callers already
1790 used kproc_start()..
1791 I will return kthread_create() and friends in a while
1792 with implementations that actually create threads, not procs.
1793 Renaming corresponds with version 800002.
1802 Avoid using make -j when upgrading. While generally safe, there are
1803 sometimes problems using -j to upgrade. If your upgrade fails with
1804 -j, please try again without -j. From time to time in the past there
1805 have been problems using -j with buildworld and/or installworld. This
1806 is especially true when upgrading between "distant" versions (eg one
1807 that cross a major release boundary or several minor releases, or when
1808 several months have passed on the -current branch).
1810 Sometimes, obscure build problems are the result of environment
1811 poisoning. This can happen because the make utility reads its
1812 environment when searching for values for global variables. To run
1813 your build attempts in an "environmental clean room", prefix all make
1814 commands with 'env -i '. See the env(1) manual page for more details.
1816 When upgrading from one major version to another it is generally best
1817 to upgrade to the latest code in the currently installed branch first,
1818 then do an upgrade to the new branch. This is the best-tested upgrade
1819 path, and has the highest probability of being successful. Please try
1820 this approach before reporting problems with a major version upgrade.
1824 When upgrading the boot ZFS pool to a new version, always follow
1827 1.) recompile and reinstall the ZFS boot loader and boot block
1828 (this is part of "make buildworld" and "make installworld")
1830 2.) update the ZFS boot block on your boot drive
1832 The following example updates the ZFS boot block on the first
1833 partition (freebsd-boot) of a GPT partitioned drive ad0:
1834 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
1836 Non-boot pools do not need these updates.
1840 If you are updating from a prior version of FreeBSD (even one just
1841 a few days old), you should follow this procedure. It is the most
1842 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1844 make kernel-toolchain
1845 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1846 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1848 To test a kernel once
1849 ---------------------
1850 If you just want to boot a kernel once (because you are not sure
1851 if it works, or if you want to boot a known bad kernel to provide
1852 debugging information) run
1853 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1854 nextboot -k testkernel
1856 To just build a kernel when you know that it won't mess you up
1857 --------------------------------------------------------------
1858 This assumes you are already running a CURRENT system. Replace
1859 ${arch} with the architecture of your machine (e.g. "i386",
1860 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc).
1862 cd src/sys/${arch}/conf
1863 config KERNEL_NAME_HERE
1864 cd ../compile/KERNEL_NAME_HERE
1869 If this fails, go to the "To build a kernel" section.
1871 To rebuild everything and install it on the current system.
1872 -----------------------------------------------------------
1873 # Note: sometimes if you are running current you gotta do more than
1874 # is listed here if you are upgrading from a really old current.
1876 <make sure you have good level 0 dumps>
1878 make kernel KERNCONF=YOUR_KERNEL_HERE
1880 <reboot in single user> [3]
1888 To cross-install current onto a separate partition
1889 --------------------------------------------------
1890 # In this approach we use a separate partition to hold
1891 # current's root, 'usr', and 'var' directories. A partition
1892 # holding "/", "/usr" and "/var" should be about 2GB in
1895 <make sure you have good level 0 dumps>
1898 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1899 <maybe newfs current's root partition>
1900 <mount current's root partition on directory ${CURRENT_ROOT}>
1901 make installworld DESTDIR=${CURRENT_ROOT}
1902 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1903 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1904 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1905 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1906 <reboot into current>
1907 <do a "native" rebuild/install as described in the previous section>
1908 <maybe install compatibility libraries from ports/misc/compat*>
1912 To upgrade in-place from stable to current
1913 ----------------------------------------------
1914 <make sure you have good level 0 dumps>
1916 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1918 <reboot in single user> [3]
1925 Make sure that you've read the UPDATING file to understand the
1926 tweaks to various things you need. At this point in the life
1927 cycle of current, things change often and you are on your own
1928 to cope. The defaults can also change, so please read ALL of
1929 the UPDATING entries.
1931 Also, if you are tracking -current, you must be subscribed to
1932 freebsd-current@freebsd.org. Make sure that before you update
1933 your sources that you have read and understood all the recent
1934 messages there. If in doubt, please track -stable which has
1935 much fewer pitfalls.
1937 [1] If you have third party modules, such as vmware, you
1938 should disable them at this point so they don't crash your
1941 [3] From the bootblocks, boot -s, and then do
1946 adjkerntz -i # if CMOS is wall time
1947 Also, when doing a major release upgrade, it is required that
1948 you boot into single user mode to do the installworld.
1950 [4] Note: This step is non-optional. Failure to do this step
1951 can result in a significant reduction in the functionality of the
1952 system. Attempting to do it by hand is not recommended and those
1953 that pursue this avenue should read this file carefully, as well
1954 as the archives of freebsd-current and freebsd-hackers mailing lists
1955 for potential gotchas. The -U option is also useful to consider.
1956 See mergemaster(8) for more information.
1958 [5] Usually this step is a noop. However, from time to time
1959 you may need to do this if you get unknown user in the following
1960 step. It never hurts to do it all the time. You may need to
1961 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1962 install) after the buildworld before this step if you last updated
1963 from [78]-stable or 9-stable before 20130430.
1965 [6] This only deletes old files and directories. Old libraries
1966 can be deleted by "make delete-old-libs", but you have to make
1967 sure that no program is using those libraries anymore.
1969 [8] In order to have a kernel that can run the 4.x binaries needed to
1970 do an installworld, you must include the COMPAT_FREEBSD4 option in
1971 your kernel. Failure to do so may leave you with a system that is
1972 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is
1973 required to run the 5.x binaries on more recent kernels. And so on
1974 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7.
1976 Make sure that you merge any new devices from GENERIC since the
1977 last time you updated your kernel config file.
1979 [9] When checking out sources, you must include the -P flag to have
1980 cvs prune empty directories.
1982 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1983 "?=" instead of the "=" assignment operator, so that buildworld can
1984 override the CPUTYPE if it needs to.
1986 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1987 not on the command line, or in /etc/make.conf. buildworld will
1988 warn if it is improperly defined.
1991 This file contains a list, in reverse chronological order, of major
1992 breakages in tracking -current. It is not guaranteed to be a complete
1993 list of such breakages, and only contains entries since October 10, 2007.
1994 If you need to see UPDATING entries from before that date, you will need
1995 to fetch an UPDATING file from an older FreeBSD release.
1997 Copyright information:
1999 Copyright 1998-2009 M. Warner Losh. All Rights Reserved.
2001 Redistribution, publication, translation and use, with or without
2002 modification, in full or in part, in any form or format of this
2003 document are permitted without further permission from the author.
2005 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
2006 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
2007 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
2008 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
2009 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
2010 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
2011 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2012 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
2013 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
2014 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
2015 POSSIBILITY OF SUCH DAMAGE.
2017 Contact Warner Losh if you have any questions about your use of