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 20151205 p31 FreeBSD-SA-15:26.openssl
16 Fix OpenSSL X509_ATTRIBUTE memory leak. [SA-15:26]
18 20151104 p30 FreeBSD-SA-15:25.ntp [revised]
19 FreeBSD-EN-15:19.kqueue
22 Fix regression of ntpq(8) utility exiting due to trap 6 in
23 9.3-RELEASE-p29. [SA-15:25]
25 Fix regression in ntpd(8) lacking support for RAWDCF reference
26 clock in 9.3-RELEASE-p29. [SA-15:25]
28 Fix kqueue write events never fired for files greater 2GB. [EN-15:19]
30 Fix applications exiting due to segmentation violation on a correct
31 memory address. [EN-15:20]
33 20151026: p29 FreeBSD-SA-15:25.ntp
35 Fix multiple NTP vulnerabilities. New NTP version is 4.2.8p4.
37 The configuration file syntax has been changed, thus mergemaster
38 run is recommended. Now the "kod" parameter requires "limited"
39 parameter. If the ntp.conf is not updated, the ntpd will run
40 successfully, but with KoD disabled.
42 20151002: p28 FreeBSD-SA-15:24.rpcbind [revised]
43 Revised patch to address a regression that prevents NIS from working.
45 20150929: p27 FreeBSD-SA-15:24.rpcbind
47 Fix rpcbind(8) remote denial of service. [SA-15:24]
49 20150916: p26 FreeBSD-EN-15:18.pkg
51 Implement pubkey support for pkg(7) bootstrap. [EN-15:18]
53 20150902: p25 FreeBSD-SA-15:23.bind
55 Fix BIND remote denial of service vulnerability. [SA-15:23]
57 20150825: p24 FreeBSD-SA-15:21.amd64
58 FreeBSD-SA-15:22.openssh
61 Fix local privilege escalation in IRET handler. [SA-15:21]
63 Fix OpenSSH multiple vulnerabilities. [SA-15:22]
65 Fix insufficient check of unsupported pkg(7) signature methods.
68 20150818: p23 FreeBSD-SA-15:20.expat
70 Fix multiple integer overflows in expat (libbsdxml) XML parser.
73 20150805: p22 FreeBSD-SA-15:19.routed
75 Fix routed remote denial of service vulnerability.
77 20150728: p21 FreeBSD-SA-15:15.tcp
78 FreeBSD-SA-15:16.openssh
81 Fix resource exhaustion in TCP reassembly. [SA-15:15]
83 Fix OpenSSH multiple vulnerabilities. [SA-15:16]
85 Fix BIND remote denial of service vulnerability. [SA-15:17]
87 20150721: p20 FreeBSD-SA-15:13.tcp
89 Fix resource exhaustion due to sessions stuck in LAST_ACK state.
92 20150707: p19 FreeBSD-SA-15:11.bind
93 Fix BIND resolver remote denial of service when validating.
95 20150630: p18 FreeBSD-EN-15:08.sendmail [revised]
96 FreeBSD-EN-15:09.xlocale
98 Improvements to sendmail TLS/DH interoperability. [EN-15:08]
100 Fix inconsistency between locale and rune locale states.
103 20150618: p17 FreeBSD-EN-15:08.sendmail
104 Improvements to sendmail TLS/DH interoperability. [EN-15:08]
106 20150612: p16 FreeBSD-SA-15:10.openssl
107 Fix multiple vulnerabilities in OpenSSL. [SA-15:10]
109 20150609: p15 FreeBSD-EN-15:06.file
111 Updated base system file(1) to 5.22 to address multiple denial
114 20150513: p14 FreeBSD-EN-15:04.freebsd-update
116 Fix bug with freebsd-update(8) that does not ensure the previous
117 upgrade was completed. [EN-15:04]
119 20150407: p13 FreeBSD-SA-15:04.igmp [revised]
121 FreeBSD-SA-15:09.ipv6
123 Improved patch for SA-15:04.igmp.
125 Fix multiple vulnerabilities of ntp. [SA-15:07]
127 Fix Denial of Service with IPv6 Router Advertisements. [SA-15:09]
130 Fix patch for SA-15:06.openssl.
132 20150319: p11 FreeBSD-SA-15:06.openssl
133 Fix multiple vulnerabilities in OpenSSL. [SA-15:06]
135 20150225: p10 FreeBSD-SA-15:04.igmp
136 FreeBSD-SA-15:05.bind
138 FreeBSD-EN-15:02.openssl
139 FreeBSD-EN-15:03.freebsd-update
141 Fix integer overflow in IGMP protocol. [SA-15:04]
143 Fix BIND remote denial of service vulnerability. [SA-15:05]
145 Fix vt(4) crash with improper ioctl parameters. [EN-15:01]
147 Updated base system OpenSSL to 0.9.8zd. [EN-15:02]
149 Fix freebsd-update libraries update ordering issue. [EN-15:03]
151 20150127: p9 FreeBSD-SA-15:02.kmem
152 FreeBSD-SA-15:03.sctp
154 Fix SCTP SCTP_SS_VALUE kernel memory corruption and disclosure
155 vulnerability. [SA-15:02]
157 Fix SCTP stream reset vulnerability. [SA-15:03]
159 20150114: p8 FreeBSD-SA-15:01.openssl
160 Fix multiple vulnerabilities in OpenSSL. [SA-15:01]
162 20141223: p7 FreeBSD-SA-14:31.ntp
163 FreeBSD-EN-14:13.freebsd-update
165 Fix multiple vulnerabilities in NTP suite. [SA-14:31]
166 Fix directory deletion issue in freebsd-update. [EN-14:13]
168 20141210: p6 FreeBSD-SA-14:28.file
169 FreeBSD-SA-14:29.bind
171 Fix multiple vulnerabilities in file(1) and libmagic(3).
174 Fix BIND remote denial of service vulnerability. [SA-14:29]
176 20141104: p5 FreeBSD-SA-14:25.setlogin
180 Fix kernel stack disclosure in setlogin(2) / getlogin(2).
183 Fix remote command execution in ftp(1). [SA-14:26]
185 Fix NFSv4 and ZFS cache consistency issue. [EN-14:12]
187 20141022: p4 FreeBSD-EN-14:10.tzdata
188 FreeBSD-EN-14:11.crypt
190 Time zone data file update. [EN-14:10]
192 Change crypt(3) default hashing algorithm back to DES. [EN-14:11]
194 20141021: p3 FreeBSD-SA-14:20.rtsold
195 FreeBSD-SA-14:21.routed
196 FreeBSD-SA-14:22.namei
197 FreeBSD-SA-14:23.openssl
199 Fix rtsold(8) remote buffer overflow vulnerability. [SA-14:20]
201 Fix routed(8) remote denial of service vulnerability. [SA-14:21]
203 Fix memory leak in sandboxed namei lookup. [SA-14:22]
205 Fix OpenSSL multiple vulnerabilities. [SA-14:23]
207 20140916: p2 FreeBSD-SA-14:19.tcp
208 Fix Denial of Service in TCP packet processing. [SA-14:19]
210 20140909: p1 FreeBSD-SA-14:18.openssl
211 Fix OpenSSL multiple vulnerabilities. [SA-14:18]
217 On i386 and amd64 systems, the onifconsole flag is now set by default
218 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled
219 as a login TTY if it is set in the bootloader as an active kernel
220 console. No changes in behavior should result otherwise. To revert to
221 the previous behavior, set ttyu0 to "off" in /etc/ttys.
224 Clang and llvm have been upgraded to 3.4.1 release.
227 Clang and llvm have been upgraded to 3.4 release.
230 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has
231 been deprecated and will not be part of FreeBSD 11.0 and later
232 releases. If you use this driver, please consider switching to
233 the nfe(4) driver instead.
236 The behavior of gss_pseudo_random() for the krb5 mechanism
237 has changed, for applications requesting a longer random string
238 than produced by the underlying enctype's pseudo-random() function.
239 In particular, the random string produced from a session key of
240 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will
241 be different at the 17th octet and later, after this change.
242 The counter used in the PRF+ construction is now encoded as a
243 big-endian integer in accordance with RFC 4402.
244 __FreeBSD_version is bumped to 902505.
250 Behavior of devfs rules path matching has been changed.
251 Pattern is now always matched against fully qualified devfs
252 path and slash characters must be explicitly matched by
253 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs
254 subdirectories must be reviewed.
257 hastctl(8)'s `status' command output changed to terse one-liner format.
258 Scripts using this should switch to `list' command or be rewritten.
261 Fix a bug that allowed a tracing process (e.g. gdb) to write
262 to a memory-mapped file in the traced process's address space
263 even if neither the traced process nor the tracing process had
264 write access to that file.
267 Added ZFS TRIM support which is enabled by default. To disable
268 ZFS TRIM support set vfs.zfs.trim.enabled=0 in loader.conf.
270 Creating new ZFS pools and adding new devices to existing pools
271 first performs a full device level TRIM which can take a significant
272 amount of time. The sysctl vfs.zfs.vdev.trim_on_init can be set to 0
273 to disable this behaviour.
275 ZFS TRIM requires the underlying device support BIO_DELETE which
276 is currently provided by methods such as ATA TRIM and SCSI UNMAP
277 via CAM, which are typically supported by SSD's.
279 Stats for ZFS TRIM can be monitored by looking at the sysctl's
280 under kstat.zfs.misc.zio_trim.
283 `list' command has been added to hastctl(8). For now, it is full
284 equivalent of `status' command.
285 WARNING: in the near future the output of hastctl's status command
286 will change to more terse format. If you use `hastctl status'
287 for parsing in your scripts, switch to `hastctl list'.
290 The mergemaster command now uses the default MAKEOBJDIRPREFIX
291 rather than creating it's own in the temporary directory in
292 order allow access to bootstrapped versions of tools such as
293 install and mtree. When upgrading from version of FreeBSD where
294 the install command does not support -l, you will need to
295 install a new mergemaster command if mergemaster -p is required.
296 This can be accomplished with the command (cd src/usr.sbin/mergemaster
299 Due to the use of the new -l option to install(1) during build
300 and install, you must take care not to directly set the INSTALL
301 make variable in your /etc/make.conf, /etc/src.conf, or on the
302 command line. If you wish to use the -C flag for all installs
303 you may be able to add INSTALL+=-C to /etc/make.conf or
307 Fix a bug that allows NFS clients to issue READDIR on files.
310 The install(1) option -M has changed meaning and now takes an
311 argument that is a file or path to append logs to. In the
312 unlikely event that -M was the last option on the command line
313 and the command line contained at least two files and a target
314 directory the first file will have logs appended to it. The -M
315 option served little practical purpose in the last decade so it's
316 used expected to be extremely rare.
319 A new compression method (lz4) has been merged to. Please refer to
320 zpool-features(7) for more information.
322 Please refer to the "ZFS notes" section of this file for information
323 on upgrading boot ZFS pools.
326 The VFS KBI was changed with the merge of several nullfs
327 optimizations and fixes. All filesystem modules must be
331 With the addition of auditdistd(8), a new auditdistd user is now
332 depended on during installworld. "mergemaster -p" can be used to add
333 the user prior to installworld, as documented in the handbook.
339 A new version of ZFS (pool version 5000) has been merged to 9-STABLE.
340 Starting with this version the old system of ZFS pool versioning
341 is superseded by "feature flags". This concept enables forward
342 compatibility against certain future changes in functionality of ZFS
343 pools. The first two read-only compatible "feature flags" for ZFS
344 pools are "com.delphix:async_destroy" and "com.delphix:empty_bpobj".
345 For more information read the new zpool-features(7) manual page.
346 Please refer to the "ZFS notes" section of this file for information
347 on upgrading boot ZFS pools.
350 The commit introducing bsd.compiler.mk breaks the traditional
351 building of kernels before this point. Add -m ${SRC}/share/mk
352 (for the right value of SRC) to your command lines to work
353 around; update your useland to a point after this; or use the
354 buildkernel/installkernel top-level targets. See also 20120829.
357 The IPFIREWALL_FORWARD kernel option has been removed. Its
358 functionality now turned on by default.
361 The random(4) support for the VIA hardware random number
362 generator (`PADLOCK') is no longer enabled unconditionally.
363 Add the PADLOCK_RNG option in the custom kernel config if
364 needed. The GENERIC kernels on i386 and amd64 do include the
365 option, so the change only affects the custom kernel
369 The amd64 kernel now uses xsetbv, xrstor instructions. To compile with
370 the traditional method, you must update your system with an installworld
371 before the kernel will build. The documented make buildkernel/installkernel
372 interfaces (coupled with fresh make kernel-toolchain) continue to work.
375 The sparc64 ZFS loader has been changed to no longer try to auto-
376 detect ZFS providers based on diskN aliases but now requires these
377 to be explicitly listed in the OFW boot-device environment variable.
380 Now unix domain sockets behave "as expected" on nullfs(5). Previously
381 nullfs(5) did not pass through all behaviours to the underlying layer,
382 as a result if we bound to a socket on the lower layer we could connect
383 only to the lower path; if we bound to the upper layer we could connect
384 only to the upper path. The new behavior is one can connect to both the
385 lower and the upper paths regardless what layer path one binds to.
388 The acpi_wmi(4) status device /dev/wmistat has been renamed to
392 A new VOP_ADVISE() was added to support posix_fadvise(2). All
393 filesystem modules must be recompiled.
396 The interface of the VOP_VPTOCNP(9) changed, now the returned
397 vnode shall be referenced, previously it was required to be
398 only held. All in-tree filesystems are converted.
404 The broken amd(4) driver has been replaced with esp(4) in the amd64,
405 i386 and pc98 GENERIC kernel configuration files.
408 This commit modifies vfs_register() so that it uses a hash
409 calculation to set vfc_typenum, which is enabled by default.
410 The first time a system is booted after this change, the
411 vfc_typenum values will change for all file systems. The
412 main effect of this is a change to the NFS server file handles
413 for file systems that use vfc_typenum in their fsid, such as ZFS.
414 It will, however, prevent vfc_typenum from changing when file
415 systems are loaded in a different order for subsequent reboots.
416 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf
417 until you are ready to remount all NFS clients after a reboot.
420 Bump the shared library version numbers for libraries that
421 do not use symbol versioning, have changed the ABI compared
422 to stable/8 and which shared library version was not bumped.
423 Done as part of 9.0-RELEASE cycle.
426 During the merge of Capsicum features, the fget(9) KPI was modified.
427 This may require the rebuilding of out-of-tree device drivers --
428 issues have been reported specifically with the nVidia device driver.
429 __FreeBSD_version is bumped to 900041.
431 Also, there is a period between 20110811 and 20110814 where the
432 special devices /dev/{stdin,stdout,stderr} did not work correctly.
433 Building world from a kernel during that window may not work.
436 The packet filter (pf) code has been updated to OpenBSD 4.5.
437 You need to update userland tools to be in sync with kernel.
438 This update breaks backward compatibility with earlier pfsync(4)
439 versions. Care must be taken when updating redundant firewall setups.
442 The following sysctls and tunables are retired on x86 platforms:
444 machdep.hlt_logical_cpus
445 The following sysctl is retired:
446 machdep.hyperthreading_allowed
447 The sysctls were supposed to provide a way to dynamically offline and
448 online selected CPUs on x86 platforms, but the implementation has not
449 been reliable especially with SCHED_ULE scheduler.
450 machdep.hyperthreading_allowed tunable is still available to ignore
451 hyperthreading CPUs at OS level.
452 Individual CPUs can be disabled using hint.lapic.X.disabled tunable,
453 where X is an APIC ID of a CPU. Be advised, though, that disabling
454 CPUs in non-uniform fashion will result in non-uniform topology and
455 may lead to sub-optimal system performance with SCHED_ULE, which is
459 cpumask_t type is retired and cpuset_t is used in order to describe
463 Changes to ifconfig(8) for dynamic address family detection mandate
464 that you are running a kernel of 20110525 or later. Make sure to
465 follow the update procedure to boot a new kernel before installing
469 Support for sun4v architecture is officially dropped
472 Several KPI breaking changes have been committed to the mii(4) layer,
473 the PHY drivers and consequently some Ethernet drivers using mii(4).
474 This means that miibus.ko and the modules of the affected Ethernet
475 drivers need to be recompiled.
477 Note to kernel developers: Given that the OUI bit reversion problem
478 was fixed as part of these changes all mii(4) commits related to OUIs,
479 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific
480 handling, no longer can be merged verbatim to stable/8 and previous
484 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci'
485 into their kernel configurations along with 'device pci'.
488 The default NFS client is now the new NFS client, so fstype "newnfs"
489 is now "nfs" and the regular/old NFS client is now fstype "oldnfs".
490 Although mounts via fstype "nfs" will usually work without userland
491 changes, it is recommended that the mount(8) and mount_nfs(8)
492 commands be rebuilt from sources and that a link to mount_nfs called
493 mount_oldnfs be created. The new client is compiled into the
494 kernel with "options NFSCL" and this is needed for diskless root
495 file systems. The GENERIC kernel configs have been changed to use
496 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER.
497 To use the regular/old client, you can "mount -t oldnfs ...". For
498 a diskless root file system, you must also include a line like:
500 vfs.root.mountfrom="oldnfs:"
502 in the boot/loader.conf on the root fs on the NFS server to make
503 a diskless root fs use the old client.
506 The GENERIC kernels for all architectures now default to the new
507 CAM-based ATA stack. It means that all legacy ATA drivers were
508 removed and replaced by respective CAM drivers. If you are using
509 ATA device names in /etc/fstab or other places, make sure to update
510 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY,
511 where 'Y's are the sequential numbers starting from zero for each type
512 in order of detection, unless configured otherwise with tunables,
513 see cam(4)). There will be symbolic links created in /dev/ to map
514 old adX devices to the respective adaY. They should provide basic
515 compatibility for file systems mounting in most cases, but they do
516 not support old user-level APIs and do not have respective providers
517 in GEOM. Consider using updated management tools with new device names.
519 It is possible to load devices ahci, ata, siis and mvs as modules,
520 but option ATA_CAM should remain in kernel configuration to make ata
521 module work as CAM driver supporting legacy ATA controllers. Device ata
522 still can be used in modular fashion (atacore + ...). Modules atadisk
523 and atapi* are not used and won't affect operation in ATA_CAM mode.
524 Note that to use CAM-based ATA kernel should include CAM devices
525 scbus, pass, da (or explicitly ada), cd and optionally others. All of
526 them are parts of the cam module.
528 ataraid(4) functionality is now supported by the RAID GEOM class.
529 To use it you can load geom_raid kernel module and use graid(8) tool
530 for management. Instead of /dev/arX device names, use /dev/raid/rX.
532 No kernel config options or code have been removed, so if a problem
533 arises, please report it and optionally revert to the old ATA stack.
534 In order to do it you can remove from the kernel config:
539 , and instead add back:
540 device atadisk # ATA disk drives
541 device ataraid # ATA RAID drives
542 device atapicd # ATAPI CDROM drives
543 device atapifd # ATAPI floppy drives
544 device atapist # ATAPI tape drives
547 The default NFS server has been changed to the new server, which
548 was referred to as the experimental server. If you need to switch
549 back to the old NFS server, you must now put the "-o" option on
550 both the mountd and nfsd commands. This can be done using the
551 mountd_flags and nfs_server_flags rc.conf variables until an
552 update to the rc scripts is committed, which is coming soon.
555 The GNU Objective-C runtime library (libobjc), and other Objective-C
556 related components have been removed from the base system. If you
557 require an Objective-C library, please use one of the available ports.
560 ath(4) has been split into bus- and device- modules. if_ath contains
561 the HAL, the TX rate control and the network device code. if_ath_pci
562 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb
563 contains the AHB glue. Users need to load both if_ath_pci and if_ath
564 in order to use ath on everything else.
566 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only
567 need to load if_ath and if_ath_pci for ath(4) operation.
570 As part of the replacement of sysinstall, the process of building
571 release media has changed significantly. For details, please re-read
572 release(7), which has been updated to reflect the new build process.
575 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This
576 is the last available version under GPLv2. It brings a number of new
577 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE
578 4.1 and SSE 4.2), better support for powerpc64, a number of new
579 directives, and lots of other small improvements. See the ChangeLog
580 file in contrib/binutils for the full details.
583 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868
584 compliant, and will now use half of hash for authentication.
585 This will break interoperability with all stacks (including all
586 actual FreeBSD versions) who implement
587 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for
589 The only workaround with such peers is to use another HMAC
590 algorithm for IPsec ("phase 2") authentication.
593 Remove the uio_yield prototype and symbol. This function has
594 been misnamed since it was introduced and should not be
595 globally exposed with this name. The equivalent functionality
596 is now available using kern_yield(curthread->td_user_pri).
597 The function remains undocumented.
600 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers,
601 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking
602 for scalar sysctls is defined but disabled. Code that needs
603 UQUAD to pass the type checking that must compile on older
604 systems where the define is not present can check against
605 __FreeBSD_version >= 900030.
607 The system dialog(1) has been replaced with a new version previously
608 in ports as devel/cdialog. dialog(1) is mostly command-line compatible
609 with the previous version, but the libdialog associated with it has
610 a largely incompatible API. As such, the original version of libdialog
611 will be kept temporarily as libodialog, until its base system consumers
612 are replaced or updated. Bump __FreeBSD_version to 900030.
615 If you are trying to run make universe on a -stable system, and you get
616 the following warning:
617 "Makefile", line 356: "Target architecture for i386/conf/GENERIC
618 unknown. config(8) likely too old."
619 or something similar to it, then you must upgrade your -stable system
620 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in
621 stable/8) or build the config from the latest stable/8 branch and
622 install it on your system.
624 Prior to this date, building a current universe on 8-stable system from
625 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing
626 error in the first kernel build phase. A new config on those old
627 systems will fix that problem for older versions of -current.
630 The TCP stack has been modified to allow Khelp modules to interact with
631 it via helper hook points and store per-connection data in the TCP
632 control block. Bump __FreeBSD_version to 900029. User space tools that
633 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to
637 Generic IEEE 802.3 annex 31B full duplex flow control support has been
638 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along
639 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted
640 to take advantage of it instead of using custom implementations. This
641 means that these drivers now no longer unconditionally advertise
642 support for flow control but only do so if flow control is a selected
643 media option. This was implemented in the generic support that way in
644 order to allow flow control to be switched on and off via ifconfig(8)
645 with the PHY specific default to typically off in order to protect
646 from unwanted effects. Consequently, if you used flow control with
647 one of the above mentioned drivers you now need to explicitly enable
649 ifconfig bge0 media auto mediaopt flowcontrol
651 Along with the above mentioned changes generic support for setting
652 1000baseT master mode also has been added and brgphy(4), ciphy(4),
653 e1000phy(4) as well as ip1000phy(4) have been converted to take
654 advantage of it. This means that these drivers now no longer take the
655 link0 parameter for selecting master mode but the master media option
656 has to be used instead, for example like in the following:
657 ifconfig bge0 media 1000baseT mediaopt full-duplex,master
659 Selection of master mode now is also available with all other PHY
660 drivers supporting 1000baseT.
663 The TCP stack has received a significant update to add support for
664 modularised congestion control and generally improve the clarity of
665 congestion control decisions. Bump __FreeBSD_version to 900025. User
666 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g.
667 sockstat) need to be recompiled.
670 The man(1) utility has been replaced by a new version that no longer
671 uses /etc/manpath.config. Please consult man.conf(5) for how to
672 migrate local entries to the new format.
675 The copyright strings printed by login(1) and sshd(8) at the time of a
676 new connection have been removed to follow other operating systems and
680 A workaround for a fixed ld bug has been removed in kernel code,
681 so make sure that your system ld is built from sources after
682 revision 210245 from 2010-07-19 (r211583 if building head kernel
683 on stable/8, r211584 for stable/7; both from 2010-08-21).
684 A symptom of incorrect ld version is different addresses for
685 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules.
688 The $ipv6_prefer variable in rc.conf(5) has been split into
689 $ip6addrctl_policy and $ipv6_activate_all_interfaces.
691 The $ip6addrctl_policy is a variable to choose a pre-defined
692 address selection policy set by ip6addrctl(8). A value
693 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The
696 The $ipv6_activate_all_interfaces specifies whether IFDISABLED
697 flag (see an entry of 20090926) is set on an interface with no
698 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for
699 security reason. If you want IPv6 link-local address on all
700 interfaces by default, set this to "YES".
702 The old ipv6_prefer="YES" is equivalent to
703 ipv6_activate_all_interfaces="YES" and
704 ip6addrctl_policy="ipv6_prefer".
707 DTrace has grown support for userland tracing. Due to this, DTrace is
708 now i386 and amd64 only.
709 dtruss(1) is now installed by default on those systems and a new
710 kernel module is needed for userland tracing: fasttrap.
711 No changes to your kernel config file are necessary to enable
712 userland tracing, but you might consider adding 'STRIP=' and
713 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want
714 to have informative userland stack traces in DTrace (ustack).
717 The acpi_aiboost(4) driver has been removed in favor of the new
718 aibs(4) driver. You should update your kernel configuration file.
721 BSD grep has been imported to the base system and it is built by
722 default. It is completely BSD licensed, highly GNU-compatible, uses
723 less memory than its GNU counterpart and has a small codebase.
724 However, it is slower than its GNU counterpart, which is mostly
725 noticeable for larger searches, for smaller ones it is measurable
726 but not significant. The reason is complex, the most important factor
727 is that we lack a modern and efficient regex library and GNU
728 overcomes this by optimizing the searches internally. Future work
729 on improving the regex performance is planned, for the meantime,
730 users that need better performance, can build GNU grep instead by
731 setting the WITH_GNU_GREP knob.
734 Due to the import of powerpc64 support, all existing powerpc kernel
735 configuration files must be updated with a machine directive like this:
736 machine powerpc powerpc
738 In addition, an updated config(8) is required to build powerpc kernels
742 A new version of ZFS (version 15) has been merged to -HEAD.
743 This version uses a python library for the following subcommands:
744 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
745 For full functionality of these commands the following port must
746 be installed: sysutils/py-zfs
749 'vm_page's are now hashed by physical address to an array of mutexes.
750 Currently this is only used to serialize access to hold_count. Over
751 time the page queue mutex will be peeled away. This changes the size
752 of pmap on every architecture. And requires all callers of vm_page_hold
753 and vm_page_unhold to be updated.
756 WITH_CTF can now be specified in src.conf (not recommended, there
757 are some problems with static executables), make.conf (would also
758 affect ports which do not use GNU make and do not override the
759 compile targets) or in the kernel config (via "makeoptions
761 When WITH_CTF was specified there before this was silently ignored,
762 so make sure that WITH_CTF is not used in places which could lead
763 to unwanted behavior.
766 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
767 to allow 32-bit compatibility on non-x86 platforms. All kernel
768 configurations on amd64 and ia64 platforms using these options must
769 be modified accordingly.
772 The utmp user accounting database has been replaced with utmpx,
773 the user accounting interface standardized by POSIX.
774 Unfortunately the semantics of utmp and utmpx don't match,
775 making it practically impossible to support both interfaces.
776 The user accounting database is used by tools like finger(1),
777 last(1), talk(1), w(1) and ac(8).
779 All applications in the base system use utmpx. This means only
780 local binaries (e.g. from the ports tree) may still use these
781 utmp database files. These applications must be rebuilt to make
784 After the system has been upgraded, it is safe to remove the old
785 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*),
786 assuming their contents is of no importance anymore. Old wtmp
787 databases can only be used by last(1) and ac(8) after they have
788 been converted to the new format using wtmpcvt(1).
791 Introduce the kernel thread "deadlock resolver" (which can be enabled
792 via the DEADLKRES option, see NOTES for more details) and the
793 sleepq_type() function for sleepqueues.
796 The rc.firewall and rc.firewall6 were unified, and
797 rc.firewall6 and rc.d/ip6fw were removed.
798 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
799 variables are obsoleted. Instead, the following new rc
800 variables are added to rc.d/ipfw:
802 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
803 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
804 firewall_simple_onet_ipv6, firewall_trusted_ipv6
806 The meanings correspond to the relevant IPv4 variables.
812 The default terminal emulation for syscons(4) has been changed
813 from cons25 to xterm on all platforms except pc98. This means
814 that the /etc/ttys file needs to be updated to ensure correct
815 operation of applications on the console.
817 The terminal emulation style can be toggled per window by using
818 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration
819 options can be used to change the compile-time default back to
822 To prevent graphical artifacts, make sure the TERM environment
823 variable is set to match the terminal emulation that is being
824 performed by syscons(4).
827 The layout of the structure ieee80211req_scan_result has changed.
828 Applications that require wireless scan results (e.g. ifconfig(8))
829 from net80211 need to be recompiled.
831 Applications such as wpa_supplicant(8) may require a full world
832 build without using NO_CLEAN in order to get synchronized with the
836 The iwn(4) driver has been updated to support the 5000 and 5150 series.
837 There's one kernel module for each firmware. Adding "device iwnfw"
838 to the kernel configuration file means including all three firmware
839 images inside the kernel. If you want to include just the one for
840 your wireless card, use the devices iwn4965fw, iwn5000fw or
844 The rc.d/network_ipv6, IPv6 configuration script has been integrated
845 into rc.d/netif. The changes are the following:
847 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF
848 for IPv4. For aliases, $ifconfig_IF_aliasN should be used.
849 Note that both variables need the "inet6" keyword at the head.
851 Do not set $ipv6_network_interfaces manually if you do not
852 understand what you are doing. It is not needed in most cases.
854 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but
857 2. $ipv6_enable is obsolete. Use $ipv6_prefer and
858 "inet6 accept_rtadv" keyword in ifconfig(8) instead.
860 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and
861 all configured interfaces have "inet6 accept_rtadv" in the
862 $ifconfig_IF_ipv6. These are for backward compatibility.
864 3. A new variable $ipv6_prefer has been added. If NO, IPv6
865 functionality of interfaces with no corresponding
866 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag,
867 and the default address selection policy of ip6addrctl(8)
868 is the IPv4-preferred one (see rc.d/ip6addrctl for more details).
869 Note that if you want to configure IPv6 functionality on the
870 disabled interfaces after boot, first you need to clear the flag by
871 using ifconfig(8) like:
873 ifconfig em0 inet6 -ifdisabled
875 If YES, the default address selection policy is set as
878 The default value of $ipv6_prefer is NO.
880 4. If your system need to receive Router Advertisement messages,
881 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8)
882 scripts automatically invoke rtsol(8) when the interface becomes
883 UP. The Router Advertisement messages are used for SLAAC
884 (State-Less Address AutoConfiguration).
887 802.11s D3.03 support was committed. This is incompatible with the
888 previous code, which was based on D3.0.
891 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value
892 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to
893 control whether accepting Router Advertisement messages or not.
894 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and
895 a sysctl variable net.inet6.ip6.auto_linklocal is its default value.
896 The ifconfig(8) utility now supports these flags.
899 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
900 mount(8) and -a option for df(1) to see them.
903 The old tunable hw.bus.devctl_disable has been superseded by
904 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be
905 replaced by hw.bus.devctl_queue=0. The default for this new tunable
909 Remove the option STOP_NMI. The default action is now to use NMI only
910 for KDB via the newly introduced function stop_cpus_hard() and
911 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64.
914 The stable/8 branch created in subversion. This corresponds to the
915 RELENG_8 branch in CVS.
918 Bump the shared library version numbers for all libraries that do not
919 use symbol versioning as part of the 8.0-RELEASE cycle. Bump
920 __FreeBSD_version to 800105.
923 Due to changes in the implementation of virtual network stack support,
924 all network-related kernel modules must be recompiled. As this change
925 breaks the ABI, bump __FreeBSD_version to 800104.
928 The TOE interface to the TCP syncache has been modified to remove
929 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack.
930 The cxgb driver is the only TOE consumer affected by this change, and
931 needs to be recompiled along with the kernel. As this change breaks
932 the ABI, bump __FreeBSD_version to 800103.
935 Padding has been added to struct tcpcb, sackhint and tcpstat in
936 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
937 maintaining the ABI. However, this change breaks the ABI, so bump
938 __FreeBSD_version to 800102. User space tools that rely on the size of
939 any of these structs (e.g. sockstat) need to be recompiled.
942 The NFS_LEGACYRPC option has been removed along with the old kernel
943 RPC implementation that this option selected. Kernel configurations
944 may need to be adjusted.
947 The network interface device nodes at /dev/net/<interface> have been
948 removed. All ioctl operations can be performed the normal way using
949 routing sockets. The kqueue functionality can generally be replaced
950 with routing sockets.
953 The documentation from the FreeBSD Documentation Project (Handbook,
954 FAQ, etc.) is now installed via packages by sysinstall(8) and under
955 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc.
958 The ABI of various structures related to the SYSV IPC API have been
959 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel
960 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to
964 Layout of struct vnet has changed as routing related variables were
965 moved to their own Vimage module. Modules need to be recompiled. Bump
966 __FreeBSD_version to 800099.
969 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024
970 respectively. As long as no more than 16 groups per process are used,
971 no changes should be visible. When more than 16 groups are used, old
972 binaries may fail if they call getgroups() or getgrouplist() with
973 statically sized storage. Recompiling will work around this, but
974 applications should be modified to use dynamically allocated storage
975 for group arrays as POSIX.1-2008 does not cap an implementation's
976 number of supported groups at NGROUPS_MAX+1 as previous versions did.
978 NFS and portalfs mounts may also be affected as the list of groups is
979 truncated to 16. Users of NFS who use more than 16 groups, should
980 take care that negative group permissions are not used on the exported
981 file systems as they will not be reliable unless a GSSAPI based
982 authentication method is used.
985 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This
986 option compiles in the support for adaptive spinning for lockmgrs
987 which want to enable it. The lockinit() function now accepts the flag
988 LK_ADAPTIVE in order to make the lock object subject to adaptive
989 spinning when both held in write and read mode.
992 The layout of the structure returned by IEEE80211_IOC_STA_INFO has
993 changed. User applications that use this ioctl need to be rebuilt.
996 The layout of struct thread has changed. Kernel and modules need to
1000 The layout of structs ifnet, domain, protosw and vnet_net has changed.
1001 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097.
1004 window(1) has been removed from the base system. It can now be
1005 installed from ports. The port is called misc/window.
1008 The way we are storing and accessing `routing table' entries has
1009 changed. Programs reading the FIB, like netstat, need to be
1013 A new netisr implementation has been added for FreeBSD 8. Network
1014 file system modules, such as igmp, ipdivert, and others, should be
1016 Bump __FreeBSD_version to 800096.
1019 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no
1023 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
1024 Bump __FreeBSD_version to 800094.
1027 Add mnt_xflag field to 'struct mount'. File system modules need to be
1029 Bump __FreeBSD_version to 800093.
1032 The compiling option ADAPTIVE_SX has been retired while it has been
1033 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
1034 The KPI for sx_init_flags() changes as accepting flags:
1035 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has
1036 been introduced in order to handle the reversed logic.
1037 Bump __FreeBSD_version to 800092.
1040 Add support for hierarchical jails. Remove global securelevel.
1041 Bump __FreeBSD_version to 800091.
1044 The layout of struct vnet_net has changed, therefore modules
1046 Bump __FreeBSD_version to 800090.
1049 The newly imported zic(8) produces a new format in the output. Please
1050 run tzsetup(8) to install the newly created data to /etc/localtime.
1053 The sysctl tree for the usb stack has renamed from hw.usb2.* to
1054 hw.usb.* and is now consistent again with previous releases.
1057 802.11 monitor mode support was revised and driver api's were changed.
1058 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead
1059 of DLT_IEEE802_11. No user-visible data structures were changed but
1060 applications that use DLT_IEEE802_11 may require changes.
1061 Bump __FreeBSD_version to 800088.
1064 The layout of the following structs has changed: sysctl_oid,
1065 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
1066 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
1067 panics may be experienced. World rebuild is required for
1068 correctly checking networking state from userland.
1069 Bump __FreeBSD_version to 800085.
1072 MLDv2 and Source-Specific Multicast (SSM) have been merged
1073 to the IPv6 stack. VIMAGE hooks are in but not yet used.
1074 The implementation of SSM within FreeBSD's IPv6 stack closely
1075 follows the IPv4 implementation.
1077 For kernel developers:
1079 * The most important changes are that the ip6_output() and
1080 ip6_input() paths no longer take the IN6_MULTI_LOCK,
1081 and this lock has been downgraded to a non-recursive mutex.
1083 * As with the changes to the IPv4 stack to support SSM, filtering
1084 of inbound multicast traffic must now be performed by transport
1085 protocols within the IPv6 stack. This does not apply to TCP and
1086 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
1088 * The KPIs used by IPv6 multicast are similar to those used by
1089 the IPv4 stack, with the following differences:
1090 * im6o_mc_filter() is analogous to imo_multicast_filter().
1091 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
1092 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
1093 * IN6_LOOKUP_MULTI() has been deprecated and removed.
1094 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
1095 for MLDv1 have an additional 'timer' argument which is used to
1096 jitter the initial membership report for the solicited-node
1097 multicast membership on-link.
1098 * This is not strictly needed for MLDv2, which already jitters
1099 its report transmissions. However, the 'timer' argument is
1100 preserved in case MLDv1 is active on the interface.
1102 * The KAME linked-list based IPv6 membership implementation has
1103 been refactored to use a vector similar to that used by the IPv4
1105 Code which maintains a list of its own multicast memberships
1106 internally, e.g. carp, has been updated to reflect the new
1109 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
1110 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
1111 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
1112 implementation constraint which needs to be addressed in HEAD.
1114 For application developers:
1116 * The changes are broadly similar to those made for the IPv4
1119 * The use of IPv4 and IPv6 multicast socket options on the same
1120 socket, using mapped addresses, HAS NOT been tested or supported.
1122 * There are a number of issues with the implementation of various
1123 IPv6 multicast APIs which need to be resolved in the API surface
1124 before the implementation is fully compatible with KAME userland
1125 use, and these are mostly to do with interface index treatment.
1127 * The literature available discusses the use of either the delta / ASM
1128 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
1129 using setsourcefilter(3)/getsourcefilter(3). For more information
1130 please refer to RFC 3768, 'Socket Interface Extensions for
1131 Multicast Source Filters'.
1133 * Applications which use the published RFC 3678 APIs should be fine.
1135 For systems administrators:
1137 * The mtest(8) utility has been refactored to support IPv6, in
1138 addition to IPv4. Interface addresses are no longer accepted
1139 as arguments, their names must be used instead. The utility
1140 will map the interface name to its first IPv4 address as
1141 returned by getifaddrs(3).
1143 * The ifmcstat(8) utility has also been updated to print the MLDv2
1144 endpoint state and source filter lists via sysctl(3).
1146 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
1147 loopback of IPv6 multicast datagrams by default; it defaults to 1
1148 to preserve the existing behaviour. Disabling multicast loopback is
1149 recommended for optimal system performance.
1151 * The IPv6 MROUTING code has been changed to examine this sysctl
1152 instead of attempting to perform a group lookup before looping
1153 back forwarded datagrams.
1155 Bump __FreeBSD_version to 800084.
1158 Implement low-level Bluetooth HCI API.
1159 Bump __FreeBSD_version to 800083.
1162 The layout of struct malloc_type, used by modules to register new
1163 memory allocation types, has changed. Most modules will need to
1164 be rebuilt or panics may be experienced.
1165 Bump __FreeBSD_version to 800081.
1168 Anticipate overflowing inp_flags - add inp_flags2.
1169 This changes most offsets in inpcb, so checking v4 connection
1170 state will require a world rebuild.
1171 Bump __FreeBSD_version to 800080.
1174 Add an llentry to struct route and struct route_in6. Modules
1175 embedding a struct route will need to be recompiled.
1176 Bump __FreeBSD_version to 800079.
1179 The size of rt_metrics_lite and by extension rtentry has changed.
1180 Networking administration apps will need to be recompiled.
1181 The route command now supports show as an alias for get, weighting
1182 of routes, sticky and nostick flags to alter the behavior of stateful
1184 Bump __FreeBSD_version to 800078.
1187 Do not use Giant for kbdmux(4) locking. This is wrong and
1188 apparently causing more problems than it solves. This will
1189 re-open the issue where interrupt handlers may race with
1190 kbdmux(4) in polling mode. Typical symptoms include (but
1191 not limited to) duplicated and/or missing characters when
1192 low level console functions (such as gets) are used while
1193 interrupts are enabled (for example geli password prompt,
1194 mountroot prompt etc.). Disabling kbdmux(4) may help.
1197 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
1198 kernel modules referencing any of the above need to be recompiled.
1199 Bump __FreeBSD_version to 800075.
1202 GEOM_PART has become the default partition slicer for storage devices,
1203 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
1204 introduces some changes:
1206 MSDOS/EBR: the devices created from MSDOS extended partition entries
1207 (EBR) can be named differently than with GEOM_MBR and are now symlinks
1208 to devices with offset-based names. fstabs may need to be modified.
1210 BSD: the "geometry does not match label" warning is harmless in most
1211 cases but it points to problems in file system misalignment with
1212 disk geometry. The "c" partition is now implicit, covers the whole
1213 top-level drive and cannot be (mis)used by users.
1215 General: Kernel dumps are now not allowed to be written to devices
1216 whose partition types indicate they are meant to be used for file
1217 systems (or, in case of MSDOS partitions, as something else than
1220 Most of these changes date approximately from 200812.
1223 The uscanner(4) driver has been removed from the kernel. This follows
1224 Linux removing theirs in 2.6 and making libusb the default interface
1225 (supported by sane).
1228 The multicast forwarding code has been cleaned up. netstat(1)
1229 only relies on KVM now for printing bandwidth upcall meters.
1230 The IPv4 and IPv6 modules are split into ip_mroute_mod and
1231 ip6_mroute_mod respectively. The config(5) options for statically
1232 compiling this code remain the same, i.e. 'options MROUTING'.
1235 Support for the IFF_NEEDSGIANT network interface flag has been
1236 removed, which means that non-MPSAFE network device drivers are no
1237 longer supported. In particular, if_ar, if_sr, and network device
1238 drivers from the old (legacy) USB stack can no longer be built or
1242 POSIX.1 Native Language Support (NLS) has been enabled in libc and
1243 a bunch of new language catalog files have also been added.
1244 This means that some common libc messages are now localized and
1245 they depend on the LC_MESSAGES environmental variable.
1248 The k8temp(4) driver has been renamed to amdtemp(4) since
1249 support for Family 10 and Family 11 CPU families was added.
1252 IGMPv3 and Source-Specific Multicast (SSM) have been merged
1253 to the IPv4 stack. VIMAGE hooks are in but not yet used.
1255 For kernel developers, the most important changes are that the
1256 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
1257 and this lock has been downgraded to a non-recursive mutex.
1259 Transport protocols (UDP, Raw IP) are now responsible for filtering
1260 inbound multicast traffic according to group membership and source
1261 filters. The imo_multicast_filter() KPI exists for this purpose.
1262 Transports which do not use multicast (SCTP, TCP) already reject
1263 multicast by default. Forwarding and receive performance may improve
1264 as a mutex acquisition is no longer needed in the ip_input()
1265 low-level input path. in_addmulti() and in_delmulti() are shimmed
1266 to new KPIs which exist to support SSM in-kernel.
1268 For application developers, it is recommended that loopback of
1269 multicast datagrams be disabled for best performance, as this
1270 will still cause the lock to be taken for each looped-back
1271 datagram transmission. The net.inet.ip.mcast.loop sysctl may
1272 be tuned to 0 to disable loopback by default; it defaults to 1
1273 to preserve the existing behaviour.
1275 For systems administrators, to obtain best performance with
1276 multicast reception and multiple groups, it is always recommended
1277 that a card with a suitably precise hash filter is used. Hash
1278 collisions will still result in the lock being taken within the
1279 transport protocol input path to check group membership.
1281 If deploying FreeBSD in an environment with IGMP snooping switches,
1282 it is recommended that the net.inet.igmp.sendlocal sysctl remain
1283 enabled; this forces 224.0.0.0/24 group membership to be announced
1286 The size of 'struct igmpstat' has changed; netstat needs to be
1287 recompiled to reflect this.
1288 Bump __FreeBSD_version to 800070.
1291 libusb20.so.1 is now installed as libusb.so.1 and the ports system
1292 updated to use it. This requires a buildworld/installworld in order to
1293 update the library and dependencies (usbconfig, etc). Its advisable to
1294 rebuild all ports which uses libusb. More specific directions are given
1295 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
1296 libusb are no longer required and can be removed.
1299 A workaround is committed to allow the creation of System V shared
1300 memory segment of size > 2 GB on the 64-bit architectures.
1301 Due to a limitation of the existing ABI, the shm_segsz member
1302 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
1303 wrong for large segments. Note that limits must be explicitly
1304 raised to allow such segments to be created.
1307 The layout of struct ifnet has changed, requiring a rebuild of all
1308 network device driver modules.
1311 The /dev handling for the new USB stack has changed, a
1312 buildworld/installworld is required for libusb20.
1315 The new USB2 stack has now been permanently moved in and all kernel and
1316 module names reverted to their previous values (eg, usb, ehci, ohci,
1317 ums, ...). The old usb stack can be compiled in by prefixing the name
1318 with the letter 'o', the old usb modules have been removed.
1319 Updating entry 20090216 for xorg and 20090215 for libmap may still
1323 The rc.conf(5) option if_up_delay has been renamed to
1324 defaultroute_delay to better reflect its purpose. If you have
1325 customized this setting in /etc/rc.conf you need to update it to
1329 xorg 7.4 wants to configure its input devices via hald which does not
1330 yet work with USB2. If the keyboard/mouse does not work in xorg then
1332 Option "AllowEmptyInput" "off"
1333 to your ServerLayout section. This will cause X to use the configured
1334 kbd and mouse sections from your xorg.conf.
1337 The GENERIC kernels for all architectures now default to the new USB2
1338 stack. No kernel config options or code have been removed so if a
1339 problem arises please report it and optionally revert to the old USB
1340 stack. If you are loading USB kernel modules or have a custom kernel
1341 that includes GENERIC then ensure that usb names are also changed over,
1342 eg uftdi -> usb2_serial_ftdi.
1344 Older programs linked against the ports libusb 0.1 need to be
1345 redirected to the new stack's libusb20. /etc/libmap.conf can
1347 # Map old usb library to new one for usb2 stack
1348 libusb-0.1.so.8 libusb20.so.1
1351 All USB ethernet devices now attach as interfaces under the name ueN
1352 (eg. ue0). This is to provide a predictable name as vendors often
1353 change usb chipsets in a product without notice.
1356 The ichsmb(4) driver has been changed to require SMBus slave
1357 addresses be left-justified (xxxxxxx0b) rather than right-justified.
1358 All of the other SMBus controller drivers require left-justified
1359 slave addresses, so this change makes all the drivers provide the
1363 INET6 statistics (struct ip6stat) was updated.
1364 netstat(1) needs to be recompiled.
1367 NTFS has been removed from GENERIC kernel on amd64 to match
1368 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
1369 will load ntfs.ko module automatically when NTFS support is
1370 actually needed, unless ntfs.ko is not installed or security
1371 level prohibits loading kernel modules. If either is the case,
1372 "options NTFS" has to be added into kernel config.
1375 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
1376 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
1377 800061. User space tools that rely on the size of struct tcpcb in
1378 tcp_var.h (e.g. sockstat) need to be recompiled.
1381 ng_tty(4) module updated to match the new TTY subsystem.
1382 Due to API change, user-level applications must be updated.
1383 New API support added to mpd5 CVS and expected to be present
1384 in next mpd5.3 release.
1387 With __FreeBSD_version 800060 the makefs tool is part of
1388 the base system (it was a port).
1391 The afdata and ifnet locks have been changed from mutexes to
1392 rwlocks, network modules will need to be re-compiled.
1395 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
1396 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
1397 The new code reduced struct rtentry{} by 16 bytes on 32-bit
1398 architecture and 40 bytes on 64-bit architecture. The userland
1399 applications "arp" and "ndp" have been updated accordingly.
1400 The output from "netstat -r" shows only routing entries and
1401 none of the L2 information.
1404 __FreeBSD_version 800057 marks the switchover from the
1405 binary ath hal to source code. Users must add the line:
1407 options AH_SUPPORT_AR5416
1409 to their kernel config files when specifying:
1413 The ath_hal module no longer exists; the code is now compiled
1414 together with the driver in the ath module. It is now
1415 possible to tailor chip support (i.e. reduce the set of chips
1416 and thereby the code size); consult ath_hal(4) for details.
1419 __FreeBSD_version 800054 adds memory barriers to
1420 <machine/atomic.h>, new interfaces to ifnet to facilitate
1421 multiple hardware transmit queues for cards that support
1422 them, and a lock-less ring-buffer implementation to
1423 enable drivers to more efficiently manage queueing of
1427 A new version of ZFS (version 13) has been merged to -HEAD.
1428 This version has zpool attribute "listsnapshots" off by
1429 default, which means "zfs list" does not show snapshots,
1430 and is the same as Solaris behavior.
1433 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
1436 The uhci, ohci, ehci and slhci USB Host controller drivers have
1437 been put into separate modules. If you load the usb module
1438 separately through loader.conf you will need to load the
1439 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
1440 controller add the following to loader.conf:
1446 The ABI used by the PMC toolset has changed. Please keep
1447 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
1451 atapci kernel module now includes only generic PCI ATA
1452 driver. AHCI driver moved to ataahci kernel module.
1453 All vendor-specific code moved into separate kernel modules:
1454 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
1455 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
1456 atamarvell, atamicron, atanational, atanetcell, atanvidia,
1457 atapromise, ataserverworks, atasiliconimage, atasis, atavia
1460 The TTY subsystem of the kernel has been replaced by a new
1461 implementation, which provides better scalability and an
1462 improved driver model. Most common drivers have been migrated to
1463 the new TTY subsystem, while others have not. The following
1464 drivers have not yet been ported to the new TTY layer:
1467 cy, digi, rc, rp, sio
1473 ng_h4, ng_tty, ppp, sl, snp
1475 Adding these drivers to your kernel configuration file shall
1476 cause compilation to fail.
1479 ntpd has been upgraded to 4.2.4p5.
1482 OpenSSH has been upgraded to 5.1p1.
1484 For many years, FreeBSD's version of OpenSSH preferred DSA
1485 over RSA for host and user authentication keys. With this
1486 upgrade, we've switched to the vendor's default of RSA over
1487 DSA. This may cause upgraded clients to warn about unknown
1488 host keys even for previously known hosts. Users should
1489 follow the usual procedure for verifying host keys before
1490 accepting the RSA key.
1492 This can be circumvented by setting the "HostKeyAlgorithms"
1493 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
1496 Please note that the sequence of keys offered for
1497 authentication has been changed as well. You may want to
1498 specify IdentityFile in a different order to revert this
1502 The sio(4) driver has been removed from the i386 and amd64
1503 kernel configuration files. This means uart(4) is now the
1504 default serial port driver on those platforms as well.
1506 To prevent collisions with the sio(4) driver, the uart(4) driver
1507 uses different names for its device nodes. This means the
1508 onboard serial port will now most likely be called "ttyu0"
1509 instead of "ttyd0". You may need to reconfigure applications to
1510 use the new device names.
1512 When using the serial port as a boot console, be sure to update
1513 /boot/device.hints and /etc/ttys before booting the new kernel.
1514 If you forget to do so, you can still manually specify the hints
1515 at the loader prompt:
1517 set hint.uart.0.at="isa"
1518 set hint.uart.0.port="0x3F8"
1519 set hint.uart.0.flags="0x10"
1520 set hint.uart.0.irq="4"
1524 The gpt(8) utility has been removed. Use gpart(8) to partition
1528 The version that Linuxulator emulates was changed from 2.4.2
1529 to 2.6.16. If you experience any problems with Linux binaries
1530 please try to set sysctl compat.linux.osrelease to 2.4.2 and
1531 if it fixes the problem contact emulation mailing list.
1534 ISDN4BSD (I4B) was removed from the src tree. You may need to
1535 update a your kernel configuration and remove relevant entries.
1538 I have checked in code to support multiple routing tables.
1539 See the man pages setfib(1) and setfib(2).
1540 This is a hopefully backwards compatible version,
1541 but to make use of it you need to compile your kernel
1542 with options ROUTETABLES=2 (or more up to 16).
1545 The 802.11 wireless support was redone to enable multi-bss
1546 operation on devices that are capable. The underlying device
1547 is no longer used directly but instead wlanX devices are
1548 cloned with ifconfig. This requires changes to rc.conf files.
1549 For example, change:
1550 ifconfig_ath0="WPA DHCP"
1553 ifconfig_wlan0="WPA DHCP"
1554 see rc.conf(5) for more details. In addition, mergemaster of
1555 /etc/rc.d is highly recommended. Simultaneous update of userland
1556 and kernel wouldn't hurt either.
1558 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
1559 modules were merged into the base wlan module. All references
1560 to these modules (e.g. in kernel config files) must be removed.
1563 psm(4) has gained write(2) support in native operation level.
1564 Arbitrary commands can be written to /dev/psm%d and status can
1565 be read back from it. Therefore, an application is responsible
1566 for status validation and error recovery. It is a no-op in
1567 other operation levels.
1570 Support for KSE threading has been removed from the kernel. To
1571 run legacy applications linked against KSE libmap.conf may
1572 be used. The following libmap.conf may be used to ensure
1573 compatibility with any prior release:
1575 libpthread.so.1 libthr.so.1
1576 libpthread.so.2 libthr.so.2
1577 libkse.so.3 libthr.so.3
1580 The layout of struct vmspace has changed. This affects libkvm
1581 and any executables that link against libkvm and use the
1582 kvm_getprocs() function. In particular, but not exclusively,
1583 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
1584 The effects are minimal, but it's advisable to upgrade world
1588 The latest em driver no longer has support in it for the
1589 82575 adapter, this is now moved to the igb driver. The
1590 split was done to make new features that are incompatible
1591 with older hardware easier to do.
1594 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
1595 likewise the kernel option is now GEOM_LINUX_LVM.
1598 The default NFS mount mode has changed from UDP to TCP for
1599 increased reliability. If you rely on (insecurely) NFS
1600 mounting across a firewall you may need to update your
1604 Belatedly note the addition of m_collapse for compacting
1608 The fts(3) structures have been changed to use adequate
1609 integer types for their members and so to be able to cope
1610 with huge file trees. The old fts(3) ABI is preserved
1611 through symbol versioning in libc, so third-party binaries
1612 using fts(3) should still work, although they will not take
1613 advantage of the extended types. At the same time, some
1614 third-party software might fail to build after this change
1615 due to unportable assumptions made in its source code about
1616 fts(3) structure members. Such software should be fixed
1617 by its vendor or, in the worst case, in the ports tree.
1618 FreeBSD_version 800015 marks this change for the unlikely
1619 case that a portable fix is impossible.
1622 To upgrade to -current after this date, you must be running
1623 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
1624 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
1627 The ADAPTIVE_GIANT kernel option has been retired because its
1628 functionality is the default now.
1631 The AT keyboard emulation of sunkbd(4) has been turned on
1632 by default. In order to make the special symbols of the Sun
1633 keyboards driven by sunkbd(4) work under X these now have
1634 to be configured the same way as Sun USB keyboards driven
1635 by ukbd(4) (which also does AT keyboard emulation), f.e.:
1637 Option "XkbLayout" "us"
1638 Option "XkbRules" "xorg"
1639 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
1642 It has been decided that it is desirable to provide ABI
1643 backwards compatibility to the FreeBSD 4/5/6 versions of the
1644 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
1645 broken with the introduction of PCI domain support (see the
1646 20070930 entry). Unfortunately, this required the ABI of
1647 PCIOCGETCONF to be broken again in order to be able to
1648 provide backwards compatibility to the old version of that
1649 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
1650 again. As for prominent ports this affects neither pciutils
1651 nor xorg-server this time, the hal port needs to be rebuilt
1655 The misnamed kthread_create() and friends have been renamed
1656 to kproc_create() etc. Many of the callers already
1657 used kproc_start()..
1658 I will return kthread_create() and friends in a while
1659 with implementations that actually create threads, not procs.
1660 Renaming corresponds with version 800002.
1669 Avoid using make -j when upgrading. While generally safe, there are
1670 sometimes problems using -j to upgrade. If your upgrade fails with
1671 -j, please try again without -j. From time to time in the past there
1672 have been problems using -j with buildworld and/or installworld. This
1673 is especially true when upgrading between "distant" versions (eg one
1674 that cross a major release boundary or several minor releases, or when
1675 several months have passed on the -current branch).
1677 Sometimes, obscure build problems are the result of environment
1678 poisoning. This can happen because the make utility reads its
1679 environment when searching for values for global variables. To run
1680 your build attempts in an "environmental clean room", prefix all make
1681 commands with 'env -i '. See the env(1) manual page for more details.
1683 When upgrading from one major version to another it is generally best
1684 to upgrade to the latest code in the currently installed branch first,
1685 then do an upgrade to the new branch. This is the best-tested upgrade
1686 path, and has the highest probability of being successful. Please try
1687 this approach before reporting problems with a major version upgrade.
1691 When upgrading the boot ZFS pool to a new version, always follow
1694 1.) recompile and reinstall the ZFS boot loader and boot block
1695 (this is part of "make buildworld" and "make installworld")
1697 2.) update the ZFS boot block on your boot drive
1699 The following example updates the ZFS boot block on the first
1700 partition (freebsd-boot) of a GPT partitioned drive ad0:
1701 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
1703 Non-boot pools do not need these updates.
1707 If you are updating from a prior version of FreeBSD (even one just
1708 a few days old), you should follow this procedure. It is the most
1709 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1711 make kernel-toolchain
1712 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1713 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1715 To test a kernel once
1716 ---------------------
1717 If you just want to boot a kernel once (because you are not sure
1718 if it works, or if you want to boot a known bad kernel to provide
1719 debugging information) run
1720 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1721 nextboot -k testkernel
1723 To just build a kernel when you know that it won't mess you up
1724 --------------------------------------------------------------
1725 This assumes you are already running a CURRENT system. Replace
1726 ${arch} with the architecture of your machine (e.g. "i386",
1727 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc).
1729 cd src/sys/${arch}/conf
1730 config KERNEL_NAME_HERE
1731 cd ../compile/KERNEL_NAME_HERE
1736 If this fails, go to the "To build a kernel" section.
1738 To rebuild everything and install it on the current system.
1739 -----------------------------------------------------------
1740 # Note: sometimes if you are running current you gotta do more than
1741 # is listed here if you are upgrading from a really old current.
1743 <make sure you have good level 0 dumps>
1745 make kernel KERNCONF=YOUR_KERNEL_HERE
1747 <reboot in single user> [3]
1755 To cross-install current onto a separate partition
1756 --------------------------------------------------
1757 # In this approach we use a separate partition to hold
1758 # current's root, 'usr', and 'var' directories. A partition
1759 # holding "/", "/usr" and "/var" should be about 2GB in
1762 <make sure you have good level 0 dumps>
1765 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1766 <maybe newfs current's root partition>
1767 <mount current's root partition on directory ${CURRENT_ROOT}>
1768 make installworld DESTDIR=${CURRENT_ROOT}
1769 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1770 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1771 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1772 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1773 <reboot into current>
1774 <do a "native" rebuild/install as described in the previous section>
1775 <maybe install compatibility libraries from ports/misc/compat*>
1779 To upgrade in-place from stable to current
1780 ----------------------------------------------
1781 <make sure you have good level 0 dumps>
1783 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1785 <reboot in single user> [3]
1792 Make sure that you've read the UPDATING file to understand the
1793 tweaks to various things you need. At this point in the life
1794 cycle of current, things change often and you are on your own
1795 to cope. The defaults can also change, so please read ALL of
1796 the UPDATING entries.
1798 Also, if you are tracking -current, you must be subscribed to
1799 freebsd-current@freebsd.org. Make sure that before you update
1800 your sources that you have read and understood all the recent
1801 messages there. If in doubt, please track -stable which has
1802 much fewer pitfalls.
1804 [1] If you have third party modules, such as vmware, you
1805 should disable them at this point so they don't crash your
1808 [3] From the bootblocks, boot -s, and then do
1813 adjkerntz -i # if CMOS is wall time
1814 Also, when doing a major release upgrade, it is required that
1815 you boot into single user mode to do the installworld.
1817 [4] Note: This step is non-optional. Failure to do this step
1818 can result in a significant reduction in the functionality of the
1819 system. Attempting to do it by hand is not recommended and those
1820 that pursue this avenue should read this file carefully, as well
1821 as the archives of freebsd-current and freebsd-hackers mailing lists
1822 for potential gotchas. The -U option is also useful to consider.
1823 See mergemaster(8) for more information.
1825 [5] Usually this step is a noop. However, from time to time
1826 you may need to do this if you get unknown user in the following
1827 step. It never hurts to do it all the time. You may need to
1828 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1829 install) after the buildworld before this step if you last updated
1830 from [78]-stable or 9-stable before 20130430.
1832 [6] This only deletes old files and directories. Old libraries
1833 can be deleted by "make delete-old-libs", but you have to make
1834 sure that no program is using those libraries anymore.
1836 [8] In order to have a kernel that can run the 4.x binaries needed to
1837 do an installworld, you must include the COMPAT_FREEBSD4 option in
1838 your kernel. Failure to do so may leave you with a system that is
1839 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is
1840 required to run the 5.x binaries on more recent kernels. And so on
1841 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7.
1843 Make sure that you merge any new devices from GENERIC since the
1844 last time you updated your kernel config file.
1846 [9] When checking out sources, you must include the -P flag to have
1847 cvs prune empty directories.
1849 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1850 "?=" instead of the "=" assignment operator, so that buildworld can
1851 override the CPUTYPE if it needs to.
1853 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1854 not on the command line, or in /etc/make.conf. buildworld will
1855 warn if it is improperly defined.
1858 This file contains a list, in reverse chronological order, of major
1859 breakages in tracking -current. It is not guaranteed to be a complete
1860 list of such breakages, and only contains entries since October 10, 2007.
1861 If you need to see UPDATING entries from before that date, you will need
1862 to fetch an UPDATING file from an older FreeBSD release.
1864 Copyright information:
1866 Copyright 1998-2009 M. Warner Losh. All Rights Reserved.
1868 Redistribution, publication, translation and use, with or without
1869 modification, in full or in part, in any form or format of this
1870 document are permitted without further permission from the author.
1872 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1873 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1874 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1875 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1876 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1877 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1878 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1879 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1880 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1881 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1882 POSSIBILITY OF SUCH DAMAGE.
1884 Contact Warner Losh if you have any questions about your use of