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 20160127 p35 FreeBSD-SA-16:08.bind
16 FreeBSD-SA-16:10.linux
18 Fix BIND remote denial of service vulnerability. [SA-16:08]
20 Fix multiple vulnerabilities of ntp. [SA-16:09]
22 Fix Linux compatibility layer issetugid(2) system call
23 vulnerability. [SA-16:10]
25 20160114 p34 FreeBSD-SA-16:07.openssh
27 Fix OpenSSH client information leak. [SA-16:07]
29 20160114 p33 FreeBSD-EN-16:02.pf
30 FreeBSD-EN-16:03.yplib
33 FreeBSD-SA-16:03.linux
34 FreeBSD-SA-16:04.linux
36 FreeBSD-SA-16:06.bsnmpd
38 Fix pf(4) generating bad TCP checksums. [EN-16:02]
39 Fix infinite loop in YP/NIS client library. [EN-16:03]
40 Fix remote denial of service in SCTP. [SA-16:01]
41 Update NTP to 4.2.8p5. [SA-16:02]
42 Fix kernel memory diclosure in Linux compatibility layer. [SA-16:03]
43 Fix kernel memory overwrite in Linux compatibility layer. [SA-16:04]
44 Fix crash in TCP MD5 signatures. [SA-16:05]
45 Fix insecure default permissions for snmpd.config. [SA-16:06]
47 20151216 p32 FreeBSD-SA-15:27.bind
48 Fix BIND remote denial of service vulnerability. [SA-15:27]
50 20151205 p31 FreeBSD-SA-15:26.openssl
52 Fix OpenSSL X509_ATTRIBUTE memory leak. [SA-15:26]
54 20151104 p30 FreeBSD-SA-15:25.ntp [revised]
55 FreeBSD-EN-15:19.kqueue
58 Fix regression of ntpq(8) utility exiting due to trap 6 in
59 9.3-RELEASE-p29. [SA-15:25]
61 Fix regression in ntpd(8) lacking support for RAWDCF reference
62 clock in 9.3-RELEASE-p29. [SA-15:25]
64 Fix kqueue write events never fired for files greater 2GB. [EN-15:19]
66 Fix applications exiting due to segmentation violation on a correct
67 memory address. [EN-15:20]
69 20151026: p29 FreeBSD-SA-15:25.ntp
71 Fix multiple NTP vulnerabilities. New NTP version is 4.2.8p4.
73 The configuration file syntax has been changed, thus mergemaster
74 run is recommended. Now the "kod" parameter requires "limited"
75 parameter. If the ntp.conf is not updated, the ntpd will run
76 successfully, but with KoD disabled.
78 20151002: p28 FreeBSD-SA-15:24.rpcbind [revised]
79 Revised patch to address a regression that prevents NIS from working.
81 20150929: p27 FreeBSD-SA-15:24.rpcbind
83 Fix rpcbind(8) remote denial of service. [SA-15:24]
85 20150916: p26 FreeBSD-EN-15:18.pkg
87 Implement pubkey support for pkg(7) bootstrap. [EN-15:18]
89 20150902: p25 FreeBSD-SA-15:23.bind
91 Fix BIND remote denial of service vulnerability. [SA-15:23]
93 20150825: p24 FreeBSD-SA-15:21.amd64
94 FreeBSD-SA-15:22.openssh
97 Fix local privilege escalation in IRET handler. [SA-15:21]
99 Fix OpenSSH multiple vulnerabilities. [SA-15:22]
101 Fix insufficient check of unsupported pkg(7) signature methods.
104 20150818: p23 FreeBSD-SA-15:20.expat
106 Fix multiple integer overflows in expat (libbsdxml) XML parser.
109 20150805: p22 FreeBSD-SA-15:19.routed
111 Fix routed remote denial of service vulnerability.
113 20150728: p21 FreeBSD-SA-15:15.tcp
114 FreeBSD-SA-15:16.openssh
115 FreeBSD-SA-15:17.bind
117 Fix resource exhaustion in TCP reassembly. [SA-15:15]
119 Fix OpenSSH multiple vulnerabilities. [SA-15:16]
121 Fix BIND remote denial of service vulnerability. [SA-15:17]
123 20150721: p20 FreeBSD-SA-15:13.tcp
125 Fix resource exhaustion due to sessions stuck in LAST_ACK state.
128 20150707: p19 FreeBSD-SA-15:11.bind
129 Fix BIND resolver remote denial of service when validating.
131 20150630: p18 FreeBSD-EN-15:08.sendmail [revised]
132 FreeBSD-EN-15:09.xlocale
134 Improvements to sendmail TLS/DH interoperability. [EN-15:08]
136 Fix inconsistency between locale and rune locale states.
139 20150618: p17 FreeBSD-EN-15:08.sendmail
140 Improvements to sendmail TLS/DH interoperability. [EN-15:08]
142 20150612: p16 FreeBSD-SA-15:10.openssl
143 Fix multiple vulnerabilities in OpenSSL. [SA-15:10]
145 20150609: p15 FreeBSD-EN-15:06.file
147 Updated base system file(1) to 5.22 to address multiple denial
150 20150513: p14 FreeBSD-EN-15:04.freebsd-update
152 Fix bug with freebsd-update(8) that does not ensure the previous
153 upgrade was completed. [EN-15:04]
155 20150407: p13 FreeBSD-SA-15:04.igmp [revised]
157 FreeBSD-SA-15:09.ipv6
159 Improved patch for SA-15:04.igmp.
161 Fix multiple vulnerabilities of ntp. [SA-15:07]
163 Fix Denial of Service with IPv6 Router Advertisements. [SA-15:09]
166 Fix patch for SA-15:06.openssl.
168 20150319: p11 FreeBSD-SA-15:06.openssl
169 Fix multiple vulnerabilities in OpenSSL. [SA-15:06]
171 20150225: p10 FreeBSD-SA-15:04.igmp
172 FreeBSD-SA-15:05.bind
174 FreeBSD-EN-15:02.openssl
175 FreeBSD-EN-15:03.freebsd-update
177 Fix integer overflow in IGMP protocol. [SA-15:04]
179 Fix BIND remote denial of service vulnerability. [SA-15:05]
181 Fix vt(4) crash with improper ioctl parameters. [EN-15:01]
183 Updated base system OpenSSL to 0.9.8zd. [EN-15:02]
185 Fix freebsd-update libraries update ordering issue. [EN-15:03]
187 20150127: p9 FreeBSD-SA-15:02.kmem
188 FreeBSD-SA-15:03.sctp
190 Fix SCTP SCTP_SS_VALUE kernel memory corruption and disclosure
191 vulnerability. [SA-15:02]
193 Fix SCTP stream reset vulnerability. [SA-15:03]
195 20150114: p8 FreeBSD-SA-15:01.openssl
196 Fix multiple vulnerabilities in OpenSSL. [SA-15:01]
198 20141223: p7 FreeBSD-SA-14:31.ntp
199 FreeBSD-EN-14:13.freebsd-update
201 Fix multiple vulnerabilities in NTP suite. [SA-14:31]
202 Fix directory deletion issue in freebsd-update. [EN-14:13]
204 20141210: p6 FreeBSD-SA-14:28.file
205 FreeBSD-SA-14:29.bind
207 Fix multiple vulnerabilities in file(1) and libmagic(3).
210 Fix BIND remote denial of service vulnerability. [SA-14:29]
212 20141104: p5 FreeBSD-SA-14:25.setlogin
216 Fix kernel stack disclosure in setlogin(2) / getlogin(2).
219 Fix remote command execution in ftp(1). [SA-14:26]
221 Fix NFSv4 and ZFS cache consistency issue. [EN-14:12]
223 20141022: p4 FreeBSD-EN-14:10.tzdata
224 FreeBSD-EN-14:11.crypt
226 Time zone data file update. [EN-14:10]
228 Change crypt(3) default hashing algorithm back to DES. [EN-14:11]
230 20141021: p3 FreeBSD-SA-14:20.rtsold
231 FreeBSD-SA-14:21.routed
232 FreeBSD-SA-14:22.namei
233 FreeBSD-SA-14:23.openssl
235 Fix rtsold(8) remote buffer overflow vulnerability. [SA-14:20]
237 Fix routed(8) remote denial of service vulnerability. [SA-14:21]
239 Fix memory leak in sandboxed namei lookup. [SA-14:22]
241 Fix OpenSSL multiple vulnerabilities. [SA-14:23]
243 20140916: p2 FreeBSD-SA-14:19.tcp
244 Fix Denial of Service in TCP packet processing. [SA-14:19]
246 20140909: p1 FreeBSD-SA-14:18.openssl
247 Fix OpenSSL multiple vulnerabilities. [SA-14:18]
253 On i386 and amd64 systems, the onifconsole flag is now set by default
254 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled
255 as a login TTY if it is set in the bootloader as an active kernel
256 console. No changes in behavior should result otherwise. To revert to
257 the previous behavior, set ttyu0 to "off" in /etc/ttys.
260 Clang and llvm have been upgraded to 3.4.1 release.
263 Clang and llvm have been upgraded to 3.4 release.
266 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has
267 been deprecated and will not be part of FreeBSD 11.0 and later
268 releases. If you use this driver, please consider switching to
269 the nfe(4) driver instead.
272 The behavior of gss_pseudo_random() for the krb5 mechanism
273 has changed, for applications requesting a longer random string
274 than produced by the underlying enctype's pseudo-random() function.
275 In particular, the random string produced from a session key of
276 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will
277 be different at the 17th octet and later, after this change.
278 The counter used in the PRF+ construction is now encoded as a
279 big-endian integer in accordance with RFC 4402.
280 __FreeBSD_version is bumped to 902505.
286 Behavior of devfs rules path matching has been changed.
287 Pattern is now always matched against fully qualified devfs
288 path and slash characters must be explicitly matched by
289 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs
290 subdirectories must be reviewed.
293 hastctl(8)'s `status' command output changed to terse one-liner format.
294 Scripts using this should switch to `list' command or be rewritten.
297 Fix a bug that allowed a tracing process (e.g. gdb) to write
298 to a memory-mapped file in the traced process's address space
299 even if neither the traced process nor the tracing process had
300 write access to that file.
303 Added ZFS TRIM support which is enabled by default. To disable
304 ZFS TRIM support set vfs.zfs.trim.enabled=0 in loader.conf.
306 Creating new ZFS pools and adding new devices to existing pools
307 first performs a full device level TRIM which can take a significant
308 amount of time. The sysctl vfs.zfs.vdev.trim_on_init can be set to 0
309 to disable this behaviour.
311 ZFS TRIM requires the underlying device support BIO_DELETE which
312 is currently provided by methods such as ATA TRIM and SCSI UNMAP
313 via CAM, which are typically supported by SSD's.
315 Stats for ZFS TRIM can be monitored by looking at the sysctl's
316 under kstat.zfs.misc.zio_trim.
319 `list' command has been added to hastctl(8). For now, it is full
320 equivalent of `status' command.
321 WARNING: in the near future the output of hastctl's status command
322 will change to more terse format. If you use `hastctl status'
323 for parsing in your scripts, switch to `hastctl list'.
326 The mergemaster command now uses the default MAKEOBJDIRPREFIX
327 rather than creating it's own in the temporary directory in
328 order allow access to bootstrapped versions of tools such as
329 install and mtree. When upgrading from version of FreeBSD where
330 the install command does not support -l, you will need to
331 install a new mergemaster command if mergemaster -p is required.
332 This can be accomplished with the command (cd src/usr.sbin/mergemaster
335 Due to the use of the new -l option to install(1) during build
336 and install, you must take care not to directly set the INSTALL
337 make variable in your /etc/make.conf, /etc/src.conf, or on the
338 command line. If you wish to use the -C flag for all installs
339 you may be able to add INSTALL+=-C to /etc/make.conf or
343 Fix a bug that allows NFS clients to issue READDIR on files.
346 The install(1) option -M has changed meaning and now takes an
347 argument that is a file or path to append logs to. In the
348 unlikely event that -M was the last option on the command line
349 and the command line contained at least two files and a target
350 directory the first file will have logs appended to it. The -M
351 option served little practical purpose in the last decade so it's
352 used expected to be extremely rare.
355 A new compression method (lz4) has been merged to. Please refer to
356 zpool-features(7) for more information.
358 Please refer to the "ZFS notes" section of this file for information
359 on upgrading boot ZFS pools.
362 The VFS KBI was changed with the merge of several nullfs
363 optimizations and fixes. All filesystem modules must be
367 With the addition of auditdistd(8), a new auditdistd user is now
368 depended on during installworld. "mergemaster -p" can be used to add
369 the user prior to installworld, as documented in the handbook.
375 A new version of ZFS (pool version 5000) has been merged to 9-STABLE.
376 Starting with this version the old system of ZFS pool versioning
377 is superseded by "feature flags". This concept enables forward
378 compatibility against certain future changes in functionality of ZFS
379 pools. The first two read-only compatible "feature flags" for ZFS
380 pools are "com.delphix:async_destroy" and "com.delphix:empty_bpobj".
381 For more information read the new zpool-features(7) manual page.
382 Please refer to the "ZFS notes" section of this file for information
383 on upgrading boot ZFS pools.
386 The commit introducing bsd.compiler.mk breaks the traditional
387 building of kernels before this point. Add -m ${SRC}/share/mk
388 (for the right value of SRC) to your command lines to work
389 around; update your useland to a point after this; or use the
390 buildkernel/installkernel top-level targets. See also 20120829.
393 The IPFIREWALL_FORWARD kernel option has been removed. Its
394 functionality now turned on by default.
397 The random(4) support for the VIA hardware random number
398 generator (`PADLOCK') is no longer enabled unconditionally.
399 Add the PADLOCK_RNG option in the custom kernel config if
400 needed. The GENERIC kernels on i386 and amd64 do include the
401 option, so the change only affects the custom kernel
405 The amd64 kernel now uses xsetbv, xrstor instructions. To compile with
406 the traditional method, you must update your system with an installworld
407 before the kernel will build. The documented make buildkernel/installkernel
408 interfaces (coupled with fresh make kernel-toolchain) continue to work.
411 The sparc64 ZFS loader has been changed to no longer try to auto-
412 detect ZFS providers based on diskN aliases but now requires these
413 to be explicitly listed in the OFW boot-device environment variable.
416 Now unix domain sockets behave "as expected" on nullfs(5). Previously
417 nullfs(5) did not pass through all behaviours to the underlying layer,
418 as a result if we bound to a socket on the lower layer we could connect
419 only to the lower path; if we bound to the upper layer we could connect
420 only to the upper path. The new behavior is one can connect to both the
421 lower and the upper paths regardless what layer path one binds to.
424 The acpi_wmi(4) status device /dev/wmistat has been renamed to
428 A new VOP_ADVISE() was added to support posix_fadvise(2). All
429 filesystem modules must be recompiled.
432 The interface of the VOP_VPTOCNP(9) changed, now the returned
433 vnode shall be referenced, previously it was required to be
434 only held. All in-tree filesystems are converted.
440 The broken amd(4) driver has been replaced with esp(4) in the amd64,
441 i386 and pc98 GENERIC kernel configuration files.
444 This commit modifies vfs_register() so that it uses a hash
445 calculation to set vfc_typenum, which is enabled by default.
446 The first time a system is booted after this change, the
447 vfc_typenum values will change for all file systems. The
448 main effect of this is a change to the NFS server file handles
449 for file systems that use vfc_typenum in their fsid, such as ZFS.
450 It will, however, prevent vfc_typenum from changing when file
451 systems are loaded in a different order for subsequent reboots.
452 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf
453 until you are ready to remount all NFS clients after a reboot.
456 Bump the shared library version numbers for libraries that
457 do not use symbol versioning, have changed the ABI compared
458 to stable/8 and which shared library version was not bumped.
459 Done as part of 9.0-RELEASE cycle.
462 During the merge of Capsicum features, the fget(9) KPI was modified.
463 This may require the rebuilding of out-of-tree device drivers --
464 issues have been reported specifically with the nVidia device driver.
465 __FreeBSD_version is bumped to 900041.
467 Also, there is a period between 20110811 and 20110814 where the
468 special devices /dev/{stdin,stdout,stderr} did not work correctly.
469 Building world from a kernel during that window may not work.
472 The packet filter (pf) code has been updated to OpenBSD 4.5.
473 You need to update userland tools to be in sync with kernel.
474 This update breaks backward compatibility with earlier pfsync(4)
475 versions. Care must be taken when updating redundant firewall setups.
478 The following sysctls and tunables are retired on x86 platforms:
480 machdep.hlt_logical_cpus
481 The following sysctl is retired:
482 machdep.hyperthreading_allowed
483 The sysctls were supposed to provide a way to dynamically offline and
484 online selected CPUs on x86 platforms, but the implementation has not
485 been reliable especially with SCHED_ULE scheduler.
486 machdep.hyperthreading_allowed tunable is still available to ignore
487 hyperthreading CPUs at OS level.
488 Individual CPUs can be disabled using hint.lapic.X.disabled tunable,
489 where X is an APIC ID of a CPU. Be advised, though, that disabling
490 CPUs in non-uniform fashion will result in non-uniform topology and
491 may lead to sub-optimal system performance with SCHED_ULE, which is
495 cpumask_t type is retired and cpuset_t is used in order to describe
499 Changes to ifconfig(8) for dynamic address family detection mandate
500 that you are running a kernel of 20110525 or later. Make sure to
501 follow the update procedure to boot a new kernel before installing
505 Support for sun4v architecture is officially dropped
508 Several KPI breaking changes have been committed to the mii(4) layer,
509 the PHY drivers and consequently some Ethernet drivers using mii(4).
510 This means that miibus.ko and the modules of the affected Ethernet
511 drivers need to be recompiled.
513 Note to kernel developers: Given that the OUI bit reversion problem
514 was fixed as part of these changes all mii(4) commits related to OUIs,
515 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific
516 handling, no longer can be merged verbatim to stable/8 and previous
520 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci'
521 into their kernel configurations along with 'device pci'.
524 The default NFS client is now the new NFS client, so fstype "newnfs"
525 is now "nfs" and the regular/old NFS client is now fstype "oldnfs".
526 Although mounts via fstype "nfs" will usually work without userland
527 changes, it is recommended that the mount(8) and mount_nfs(8)
528 commands be rebuilt from sources and that a link to mount_nfs called
529 mount_oldnfs be created. The new client is compiled into the
530 kernel with "options NFSCL" and this is needed for diskless root
531 file systems. The GENERIC kernel configs have been changed to use
532 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER.
533 To use the regular/old client, you can "mount -t oldnfs ...". For
534 a diskless root file system, you must also include a line like:
536 vfs.root.mountfrom="oldnfs:"
538 in the boot/loader.conf on the root fs on the NFS server to make
539 a diskless root fs use the old client.
542 The GENERIC kernels for all architectures now default to the new
543 CAM-based ATA stack. It means that all legacy ATA drivers were
544 removed and replaced by respective CAM drivers. If you are using
545 ATA device names in /etc/fstab or other places, make sure to update
546 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY,
547 where 'Y's are the sequential numbers starting from zero for each type
548 in order of detection, unless configured otherwise with tunables,
549 see cam(4)). There will be symbolic links created in /dev/ to map
550 old adX devices to the respective adaY. They should provide basic
551 compatibility for file systems mounting in most cases, but they do
552 not support old user-level APIs and do not have respective providers
553 in GEOM. Consider using updated management tools with new device names.
555 It is possible to load devices ahci, ata, siis and mvs as modules,
556 but option ATA_CAM should remain in kernel configuration to make ata
557 module work as CAM driver supporting legacy ATA controllers. Device ata
558 still can be used in modular fashion (atacore + ...). Modules atadisk
559 and atapi* are not used and won't affect operation in ATA_CAM mode.
560 Note that to use CAM-based ATA kernel should include CAM devices
561 scbus, pass, da (or explicitly ada), cd and optionally others. All of
562 them are parts of the cam module.
564 ataraid(4) functionality is now supported by the RAID GEOM class.
565 To use it you can load geom_raid kernel module and use graid(8) tool
566 for management. Instead of /dev/arX device names, use /dev/raid/rX.
568 No kernel config options or code have been removed, so if a problem
569 arises, please report it and optionally revert to the old ATA stack.
570 In order to do it you can remove from the kernel config:
575 , and instead add back:
576 device atadisk # ATA disk drives
577 device ataraid # ATA RAID drives
578 device atapicd # ATAPI CDROM drives
579 device atapifd # ATAPI floppy drives
580 device atapist # ATAPI tape drives
583 The default NFS server has been changed to the new server, which
584 was referred to as the experimental server. If you need to switch
585 back to the old NFS server, you must now put the "-o" option on
586 both the mountd and nfsd commands. This can be done using the
587 mountd_flags and nfs_server_flags rc.conf variables until an
588 update to the rc scripts is committed, which is coming soon.
591 The GNU Objective-C runtime library (libobjc), and other Objective-C
592 related components have been removed from the base system. If you
593 require an Objective-C library, please use one of the available ports.
596 ath(4) has been split into bus- and device- modules. if_ath contains
597 the HAL, the TX rate control and the network device code. if_ath_pci
598 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb
599 contains the AHB glue. Users need to load both if_ath_pci and if_ath
600 in order to use ath on everything else.
602 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only
603 need to load if_ath and if_ath_pci for ath(4) operation.
606 As part of the replacement of sysinstall, the process of building
607 release media has changed significantly. For details, please re-read
608 release(7), which has been updated to reflect the new build process.
611 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This
612 is the last available version under GPLv2. It brings a number of new
613 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE
614 4.1 and SSE 4.2), better support for powerpc64, a number of new
615 directives, and lots of other small improvements. See the ChangeLog
616 file in contrib/binutils for the full details.
619 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868
620 compliant, and will now use half of hash for authentication.
621 This will break interoperability with all stacks (including all
622 actual FreeBSD versions) who implement
623 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for
625 The only workaround with such peers is to use another HMAC
626 algorithm for IPsec ("phase 2") authentication.
629 Remove the uio_yield prototype and symbol. This function has
630 been misnamed since it was introduced and should not be
631 globally exposed with this name. The equivalent functionality
632 is now available using kern_yield(curthread->td_user_pri).
633 The function remains undocumented.
636 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers,
637 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking
638 for scalar sysctls is defined but disabled. Code that needs
639 UQUAD to pass the type checking that must compile on older
640 systems where the define is not present can check against
641 __FreeBSD_version >= 900030.
643 The system dialog(1) has been replaced with a new version previously
644 in ports as devel/cdialog. dialog(1) is mostly command-line compatible
645 with the previous version, but the libdialog associated with it has
646 a largely incompatible API. As such, the original version of libdialog
647 will be kept temporarily as libodialog, until its base system consumers
648 are replaced or updated. Bump __FreeBSD_version to 900030.
651 If you are trying to run make universe on a -stable system, and you get
652 the following warning:
653 "Makefile", line 356: "Target architecture for i386/conf/GENERIC
654 unknown. config(8) likely too old."
655 or something similar to it, then you must upgrade your -stable system
656 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in
657 stable/8) or build the config from the latest stable/8 branch and
658 install it on your system.
660 Prior to this date, building a current universe on 8-stable system from
661 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing
662 error in the first kernel build phase. A new config on those old
663 systems will fix that problem for older versions of -current.
666 The TCP stack has been modified to allow Khelp modules to interact with
667 it via helper hook points and store per-connection data in the TCP
668 control block. Bump __FreeBSD_version to 900029. User space tools that
669 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to
673 Generic IEEE 802.3 annex 31B full duplex flow control support has been
674 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along
675 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted
676 to take advantage of it instead of using custom implementations. This
677 means that these drivers now no longer unconditionally advertise
678 support for flow control but only do so if flow control is a selected
679 media option. This was implemented in the generic support that way in
680 order to allow flow control to be switched on and off via ifconfig(8)
681 with the PHY specific default to typically off in order to protect
682 from unwanted effects. Consequently, if you used flow control with
683 one of the above mentioned drivers you now need to explicitly enable
685 ifconfig bge0 media auto mediaopt flowcontrol
687 Along with the above mentioned changes generic support for setting
688 1000baseT master mode also has been added and brgphy(4), ciphy(4),
689 e1000phy(4) as well as ip1000phy(4) have been converted to take
690 advantage of it. This means that these drivers now no longer take the
691 link0 parameter for selecting master mode but the master media option
692 has to be used instead, for example like in the following:
693 ifconfig bge0 media 1000baseT mediaopt full-duplex,master
695 Selection of master mode now is also available with all other PHY
696 drivers supporting 1000baseT.
699 The TCP stack has received a significant update to add support for
700 modularised congestion control and generally improve the clarity of
701 congestion control decisions. Bump __FreeBSD_version to 900025. User
702 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g.
703 sockstat) need to be recompiled.
706 The man(1) utility has been replaced by a new version that no longer
707 uses /etc/manpath.config. Please consult man.conf(5) for how to
708 migrate local entries to the new format.
711 The copyright strings printed by login(1) and sshd(8) at the time of a
712 new connection have been removed to follow other operating systems and
716 A workaround for a fixed ld bug has been removed in kernel code,
717 so make sure that your system ld is built from sources after
718 revision 210245 from 2010-07-19 (r211583 if building head kernel
719 on stable/8, r211584 for stable/7; both from 2010-08-21).
720 A symptom of incorrect ld version is different addresses for
721 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules.
724 The $ipv6_prefer variable in rc.conf(5) has been split into
725 $ip6addrctl_policy and $ipv6_activate_all_interfaces.
727 The $ip6addrctl_policy is a variable to choose a pre-defined
728 address selection policy set by ip6addrctl(8). A value
729 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The
732 The $ipv6_activate_all_interfaces specifies whether IFDISABLED
733 flag (see an entry of 20090926) is set on an interface with no
734 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for
735 security reason. If you want IPv6 link-local address on all
736 interfaces by default, set this to "YES".
738 The old ipv6_prefer="YES" is equivalent to
739 ipv6_activate_all_interfaces="YES" and
740 ip6addrctl_policy="ipv6_prefer".
743 DTrace has grown support for userland tracing. Due to this, DTrace is
744 now i386 and amd64 only.
745 dtruss(1) is now installed by default on those systems and a new
746 kernel module is needed for userland tracing: fasttrap.
747 No changes to your kernel config file are necessary to enable
748 userland tracing, but you might consider adding 'STRIP=' and
749 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want
750 to have informative userland stack traces in DTrace (ustack).
753 The acpi_aiboost(4) driver has been removed in favor of the new
754 aibs(4) driver. You should update your kernel configuration file.
757 BSD grep has been imported to the base system and it is built by
758 default. It is completely BSD licensed, highly GNU-compatible, uses
759 less memory than its GNU counterpart and has a small codebase.
760 However, it is slower than its GNU counterpart, which is mostly
761 noticeable for larger searches, for smaller ones it is measurable
762 but not significant. The reason is complex, the most important factor
763 is that we lack a modern and efficient regex library and GNU
764 overcomes this by optimizing the searches internally. Future work
765 on improving the regex performance is planned, for the meantime,
766 users that need better performance, can build GNU grep instead by
767 setting the WITH_GNU_GREP knob.
770 Due to the import of powerpc64 support, all existing powerpc kernel
771 configuration files must be updated with a machine directive like this:
772 machine powerpc powerpc
774 In addition, an updated config(8) is required to build powerpc kernels
778 A new version of ZFS (version 15) has been merged to -HEAD.
779 This version uses a python library for the following subcommands:
780 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
781 For full functionality of these commands the following port must
782 be installed: sysutils/py-zfs
785 'vm_page's are now hashed by physical address to an array of mutexes.
786 Currently this is only used to serialize access to hold_count. Over
787 time the page queue mutex will be peeled away. This changes the size
788 of pmap on every architecture. And requires all callers of vm_page_hold
789 and vm_page_unhold to be updated.
792 WITH_CTF can now be specified in src.conf (not recommended, there
793 are some problems with static executables), make.conf (would also
794 affect ports which do not use GNU make and do not override the
795 compile targets) or in the kernel config (via "makeoptions
797 When WITH_CTF was specified there before this was silently ignored,
798 so make sure that WITH_CTF is not used in places which could lead
799 to unwanted behavior.
802 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
803 to allow 32-bit compatibility on non-x86 platforms. All kernel
804 configurations on amd64 and ia64 platforms using these options must
805 be modified accordingly.
808 The utmp user accounting database has been replaced with utmpx,
809 the user accounting interface standardized by POSIX.
810 Unfortunately the semantics of utmp and utmpx don't match,
811 making it practically impossible to support both interfaces.
812 The user accounting database is used by tools like finger(1),
813 last(1), talk(1), w(1) and ac(8).
815 All applications in the base system use utmpx. This means only
816 local binaries (e.g. from the ports tree) may still use these
817 utmp database files. These applications must be rebuilt to make
820 After the system has been upgraded, it is safe to remove the old
821 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*),
822 assuming their contents is of no importance anymore. Old wtmp
823 databases can only be used by last(1) and ac(8) after they have
824 been converted to the new format using wtmpcvt(1).
827 Introduce the kernel thread "deadlock resolver" (which can be enabled
828 via the DEADLKRES option, see NOTES for more details) and the
829 sleepq_type() function for sleepqueues.
832 The rc.firewall and rc.firewall6 were unified, and
833 rc.firewall6 and rc.d/ip6fw were removed.
834 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
835 variables are obsoleted. Instead, the following new rc
836 variables are added to rc.d/ipfw:
838 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
839 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
840 firewall_simple_onet_ipv6, firewall_trusted_ipv6
842 The meanings correspond to the relevant IPv4 variables.
848 The default terminal emulation for syscons(4) has been changed
849 from cons25 to xterm on all platforms except pc98. This means
850 that the /etc/ttys file needs to be updated to ensure correct
851 operation of applications on the console.
853 The terminal emulation style can be toggled per window by using
854 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration
855 options can be used to change the compile-time default back to
858 To prevent graphical artifacts, make sure the TERM environment
859 variable is set to match the terminal emulation that is being
860 performed by syscons(4).
863 The layout of the structure ieee80211req_scan_result has changed.
864 Applications that require wireless scan results (e.g. ifconfig(8))
865 from net80211 need to be recompiled.
867 Applications such as wpa_supplicant(8) may require a full world
868 build without using NO_CLEAN in order to get synchronized with the
872 The iwn(4) driver has been updated to support the 5000 and 5150 series.
873 There's one kernel module for each firmware. Adding "device iwnfw"
874 to the kernel configuration file means including all three firmware
875 images inside the kernel. If you want to include just the one for
876 your wireless card, use the devices iwn4965fw, iwn5000fw or
880 The rc.d/network_ipv6, IPv6 configuration script has been integrated
881 into rc.d/netif. The changes are the following:
883 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF
884 for IPv4. For aliases, $ifconfig_IF_aliasN should be used.
885 Note that both variables need the "inet6" keyword at the head.
887 Do not set $ipv6_network_interfaces manually if you do not
888 understand what you are doing. It is not needed in most cases.
890 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but
893 2. $ipv6_enable is obsolete. Use $ipv6_prefer and
894 "inet6 accept_rtadv" keyword in ifconfig(8) instead.
896 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and
897 all configured interfaces have "inet6 accept_rtadv" in the
898 $ifconfig_IF_ipv6. These are for backward compatibility.
900 3. A new variable $ipv6_prefer has been added. If NO, IPv6
901 functionality of interfaces with no corresponding
902 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag,
903 and the default address selection policy of ip6addrctl(8)
904 is the IPv4-preferred one (see rc.d/ip6addrctl for more details).
905 Note that if you want to configure IPv6 functionality on the
906 disabled interfaces after boot, first you need to clear the flag by
907 using ifconfig(8) like:
909 ifconfig em0 inet6 -ifdisabled
911 If YES, the default address selection policy is set as
914 The default value of $ipv6_prefer is NO.
916 4. If your system need to receive Router Advertisement messages,
917 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8)
918 scripts automatically invoke rtsol(8) when the interface becomes
919 UP. The Router Advertisement messages are used for SLAAC
920 (State-Less Address AutoConfiguration).
923 802.11s D3.03 support was committed. This is incompatible with the
924 previous code, which was based on D3.0.
927 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value
928 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to
929 control whether accepting Router Advertisement messages or not.
930 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and
931 a sysctl variable net.inet6.ip6.auto_linklocal is its default value.
932 The ifconfig(8) utility now supports these flags.
935 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
936 mount(8) and -a option for df(1) to see them.
939 The old tunable hw.bus.devctl_disable has been superseded by
940 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be
941 replaced by hw.bus.devctl_queue=0. The default for this new tunable
945 Remove the option STOP_NMI. The default action is now to use NMI only
946 for KDB via the newly introduced function stop_cpus_hard() and
947 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64.
950 The stable/8 branch created in subversion. This corresponds to the
951 RELENG_8 branch in CVS.
954 Bump the shared library version numbers for all libraries that do not
955 use symbol versioning as part of the 8.0-RELEASE cycle. Bump
956 __FreeBSD_version to 800105.
959 Due to changes in the implementation of virtual network stack support,
960 all network-related kernel modules must be recompiled. As this change
961 breaks the ABI, bump __FreeBSD_version to 800104.
964 The TOE interface to the TCP syncache has been modified to remove
965 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack.
966 The cxgb driver is the only TOE consumer affected by this change, and
967 needs to be recompiled along with the kernel. As this change breaks
968 the ABI, bump __FreeBSD_version to 800103.
971 Padding has been added to struct tcpcb, sackhint and tcpstat in
972 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
973 maintaining the ABI. However, this change breaks the ABI, so bump
974 __FreeBSD_version to 800102. User space tools that rely on the size of
975 any of these structs (e.g. sockstat) need to be recompiled.
978 The NFS_LEGACYRPC option has been removed along with the old kernel
979 RPC implementation that this option selected. Kernel configurations
980 may need to be adjusted.
983 The network interface device nodes at /dev/net/<interface> have been
984 removed. All ioctl operations can be performed the normal way using
985 routing sockets. The kqueue functionality can generally be replaced
986 with routing sockets.
989 The documentation from the FreeBSD Documentation Project (Handbook,
990 FAQ, etc.) is now installed via packages by sysinstall(8) and under
991 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc.
994 The ABI of various structures related to the SYSV IPC API have been
995 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel
996 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to
1000 Layout of struct vnet has changed as routing related variables were
1001 moved to their own Vimage module. Modules need to be recompiled. Bump
1002 __FreeBSD_version to 800099.
1005 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024
1006 respectively. As long as no more than 16 groups per process are used,
1007 no changes should be visible. When more than 16 groups are used, old
1008 binaries may fail if they call getgroups() or getgrouplist() with
1009 statically sized storage. Recompiling will work around this, but
1010 applications should be modified to use dynamically allocated storage
1011 for group arrays as POSIX.1-2008 does not cap an implementation's
1012 number of supported groups at NGROUPS_MAX+1 as previous versions did.
1014 NFS and portalfs mounts may also be affected as the list of groups is
1015 truncated to 16. Users of NFS who use more than 16 groups, should
1016 take care that negative group permissions are not used on the exported
1017 file systems as they will not be reliable unless a GSSAPI based
1018 authentication method is used.
1021 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This
1022 option compiles in the support for adaptive spinning for lockmgrs
1023 which want to enable it. The lockinit() function now accepts the flag
1024 LK_ADAPTIVE in order to make the lock object subject to adaptive
1025 spinning when both held in write and read mode.
1028 The layout of the structure returned by IEEE80211_IOC_STA_INFO has
1029 changed. User applications that use this ioctl need to be rebuilt.
1032 The layout of struct thread has changed. Kernel and modules need to
1036 The layout of structs ifnet, domain, protosw and vnet_net has changed.
1037 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097.
1040 window(1) has been removed from the base system. It can now be
1041 installed from ports. The port is called misc/window.
1044 The way we are storing and accessing `routing table' entries has
1045 changed. Programs reading the FIB, like netstat, need to be
1049 A new netisr implementation has been added for FreeBSD 8. Network
1050 file system modules, such as igmp, ipdivert, and others, should be
1052 Bump __FreeBSD_version to 800096.
1055 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no
1059 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
1060 Bump __FreeBSD_version to 800094.
1063 Add mnt_xflag field to 'struct mount'. File system modules need to be
1065 Bump __FreeBSD_version to 800093.
1068 The compiling option ADAPTIVE_SX has been retired while it has been
1069 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
1070 The KPI for sx_init_flags() changes as accepting flags:
1071 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has
1072 been introduced in order to handle the reversed logic.
1073 Bump __FreeBSD_version to 800092.
1076 Add support for hierarchical jails. Remove global securelevel.
1077 Bump __FreeBSD_version to 800091.
1080 The layout of struct vnet_net has changed, therefore modules
1082 Bump __FreeBSD_version to 800090.
1085 The newly imported zic(8) produces a new format in the output. Please
1086 run tzsetup(8) to install the newly created data to /etc/localtime.
1089 The sysctl tree for the usb stack has renamed from hw.usb2.* to
1090 hw.usb.* and is now consistent again with previous releases.
1093 802.11 monitor mode support was revised and driver api's were changed.
1094 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead
1095 of DLT_IEEE802_11. No user-visible data structures were changed but
1096 applications that use DLT_IEEE802_11 may require changes.
1097 Bump __FreeBSD_version to 800088.
1100 The layout of the following structs has changed: sysctl_oid,
1101 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
1102 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
1103 panics may be experienced. World rebuild is required for
1104 correctly checking networking state from userland.
1105 Bump __FreeBSD_version to 800085.
1108 MLDv2 and Source-Specific Multicast (SSM) have been merged
1109 to the IPv6 stack. VIMAGE hooks are in but not yet used.
1110 The implementation of SSM within FreeBSD's IPv6 stack closely
1111 follows the IPv4 implementation.
1113 For kernel developers:
1115 * The most important changes are that the ip6_output() and
1116 ip6_input() paths no longer take the IN6_MULTI_LOCK,
1117 and this lock has been downgraded to a non-recursive mutex.
1119 * As with the changes to the IPv4 stack to support SSM, filtering
1120 of inbound multicast traffic must now be performed by transport
1121 protocols within the IPv6 stack. This does not apply to TCP and
1122 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
1124 * The KPIs used by IPv6 multicast are similar to those used by
1125 the IPv4 stack, with the following differences:
1126 * im6o_mc_filter() is analogous to imo_multicast_filter().
1127 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
1128 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
1129 * IN6_LOOKUP_MULTI() has been deprecated and removed.
1130 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
1131 for MLDv1 have an additional 'timer' argument which is used to
1132 jitter the initial membership report for the solicited-node
1133 multicast membership on-link.
1134 * This is not strictly needed for MLDv2, which already jitters
1135 its report transmissions. However, the 'timer' argument is
1136 preserved in case MLDv1 is active on the interface.
1138 * The KAME linked-list based IPv6 membership implementation has
1139 been refactored to use a vector similar to that used by the IPv4
1141 Code which maintains a list of its own multicast memberships
1142 internally, e.g. carp, has been updated to reflect the new
1145 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
1146 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
1147 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
1148 implementation constraint which needs to be addressed in HEAD.
1150 For application developers:
1152 * The changes are broadly similar to those made for the IPv4
1155 * The use of IPv4 and IPv6 multicast socket options on the same
1156 socket, using mapped addresses, HAS NOT been tested or supported.
1158 * There are a number of issues with the implementation of various
1159 IPv6 multicast APIs which need to be resolved in the API surface
1160 before the implementation is fully compatible with KAME userland
1161 use, and these are mostly to do with interface index treatment.
1163 * The literature available discusses the use of either the delta / ASM
1164 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
1165 using setsourcefilter(3)/getsourcefilter(3). For more information
1166 please refer to RFC 3768, 'Socket Interface Extensions for
1167 Multicast Source Filters'.
1169 * Applications which use the published RFC 3678 APIs should be fine.
1171 For systems administrators:
1173 * The mtest(8) utility has been refactored to support IPv6, in
1174 addition to IPv4. Interface addresses are no longer accepted
1175 as arguments, their names must be used instead. The utility
1176 will map the interface name to its first IPv4 address as
1177 returned by getifaddrs(3).
1179 * The ifmcstat(8) utility has also been updated to print the MLDv2
1180 endpoint state and source filter lists via sysctl(3).
1182 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
1183 loopback of IPv6 multicast datagrams by default; it defaults to 1
1184 to preserve the existing behaviour. Disabling multicast loopback is
1185 recommended for optimal system performance.
1187 * The IPv6 MROUTING code has been changed to examine this sysctl
1188 instead of attempting to perform a group lookup before looping
1189 back forwarded datagrams.
1191 Bump __FreeBSD_version to 800084.
1194 Implement low-level Bluetooth HCI API.
1195 Bump __FreeBSD_version to 800083.
1198 The layout of struct malloc_type, used by modules to register new
1199 memory allocation types, has changed. Most modules will need to
1200 be rebuilt or panics may be experienced.
1201 Bump __FreeBSD_version to 800081.
1204 Anticipate overflowing inp_flags - add inp_flags2.
1205 This changes most offsets in inpcb, so checking v4 connection
1206 state will require a world rebuild.
1207 Bump __FreeBSD_version to 800080.
1210 Add an llentry to struct route and struct route_in6. Modules
1211 embedding a struct route will need to be recompiled.
1212 Bump __FreeBSD_version to 800079.
1215 The size of rt_metrics_lite and by extension rtentry has changed.
1216 Networking administration apps will need to be recompiled.
1217 The route command now supports show as an alias for get, weighting
1218 of routes, sticky and nostick flags to alter the behavior of stateful
1220 Bump __FreeBSD_version to 800078.
1223 Do not use Giant for kbdmux(4) locking. This is wrong and
1224 apparently causing more problems than it solves. This will
1225 re-open the issue where interrupt handlers may race with
1226 kbdmux(4) in polling mode. Typical symptoms include (but
1227 not limited to) duplicated and/or missing characters when
1228 low level console functions (such as gets) are used while
1229 interrupts are enabled (for example geli password prompt,
1230 mountroot prompt etc.). Disabling kbdmux(4) may help.
1233 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
1234 kernel modules referencing any of the above need to be recompiled.
1235 Bump __FreeBSD_version to 800075.
1238 GEOM_PART has become the default partition slicer for storage devices,
1239 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
1240 introduces some changes:
1242 MSDOS/EBR: the devices created from MSDOS extended partition entries
1243 (EBR) can be named differently than with GEOM_MBR and are now symlinks
1244 to devices with offset-based names. fstabs may need to be modified.
1246 BSD: the "geometry does not match label" warning is harmless in most
1247 cases but it points to problems in file system misalignment with
1248 disk geometry. The "c" partition is now implicit, covers the whole
1249 top-level drive and cannot be (mis)used by users.
1251 General: Kernel dumps are now not allowed to be written to devices
1252 whose partition types indicate they are meant to be used for file
1253 systems (or, in case of MSDOS partitions, as something else than
1256 Most of these changes date approximately from 200812.
1259 The uscanner(4) driver has been removed from the kernel. This follows
1260 Linux removing theirs in 2.6 and making libusb the default interface
1261 (supported by sane).
1264 The multicast forwarding code has been cleaned up. netstat(1)
1265 only relies on KVM now for printing bandwidth upcall meters.
1266 The IPv4 and IPv6 modules are split into ip_mroute_mod and
1267 ip6_mroute_mod respectively. The config(5) options for statically
1268 compiling this code remain the same, i.e. 'options MROUTING'.
1271 Support for the IFF_NEEDSGIANT network interface flag has been
1272 removed, which means that non-MPSAFE network device drivers are no
1273 longer supported. In particular, if_ar, if_sr, and network device
1274 drivers from the old (legacy) USB stack can no longer be built or
1278 POSIX.1 Native Language Support (NLS) has been enabled in libc and
1279 a bunch of new language catalog files have also been added.
1280 This means that some common libc messages are now localized and
1281 they depend on the LC_MESSAGES environmental variable.
1284 The k8temp(4) driver has been renamed to amdtemp(4) since
1285 support for Family 10 and Family 11 CPU families was added.
1288 IGMPv3 and Source-Specific Multicast (SSM) have been merged
1289 to the IPv4 stack. VIMAGE hooks are in but not yet used.
1291 For kernel developers, the most important changes are that the
1292 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
1293 and this lock has been downgraded to a non-recursive mutex.
1295 Transport protocols (UDP, Raw IP) are now responsible for filtering
1296 inbound multicast traffic according to group membership and source
1297 filters. The imo_multicast_filter() KPI exists for this purpose.
1298 Transports which do not use multicast (SCTP, TCP) already reject
1299 multicast by default. Forwarding and receive performance may improve
1300 as a mutex acquisition is no longer needed in the ip_input()
1301 low-level input path. in_addmulti() and in_delmulti() are shimmed
1302 to new KPIs which exist to support SSM in-kernel.
1304 For application developers, it is recommended that loopback of
1305 multicast datagrams be disabled for best performance, as this
1306 will still cause the lock to be taken for each looped-back
1307 datagram transmission. The net.inet.ip.mcast.loop sysctl may
1308 be tuned to 0 to disable loopback by default; it defaults to 1
1309 to preserve the existing behaviour.
1311 For systems administrators, to obtain best performance with
1312 multicast reception and multiple groups, it is always recommended
1313 that a card with a suitably precise hash filter is used. Hash
1314 collisions will still result in the lock being taken within the
1315 transport protocol input path to check group membership.
1317 If deploying FreeBSD in an environment with IGMP snooping switches,
1318 it is recommended that the net.inet.igmp.sendlocal sysctl remain
1319 enabled; this forces 224.0.0.0/24 group membership to be announced
1322 The size of 'struct igmpstat' has changed; netstat needs to be
1323 recompiled to reflect this.
1324 Bump __FreeBSD_version to 800070.
1327 libusb20.so.1 is now installed as libusb.so.1 and the ports system
1328 updated to use it. This requires a buildworld/installworld in order to
1329 update the library and dependencies (usbconfig, etc). Its advisable to
1330 rebuild all ports which uses libusb. More specific directions are given
1331 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
1332 libusb are no longer required and can be removed.
1335 A workaround is committed to allow the creation of System V shared
1336 memory segment of size > 2 GB on the 64-bit architectures.
1337 Due to a limitation of the existing ABI, the shm_segsz member
1338 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
1339 wrong for large segments. Note that limits must be explicitly
1340 raised to allow such segments to be created.
1343 The layout of struct ifnet has changed, requiring a rebuild of all
1344 network device driver modules.
1347 The /dev handling for the new USB stack has changed, a
1348 buildworld/installworld is required for libusb20.
1351 The new USB2 stack has now been permanently moved in and all kernel and
1352 module names reverted to their previous values (eg, usb, ehci, ohci,
1353 ums, ...). The old usb stack can be compiled in by prefixing the name
1354 with the letter 'o', the old usb modules have been removed.
1355 Updating entry 20090216 for xorg and 20090215 for libmap may still
1359 The rc.conf(5) option if_up_delay has been renamed to
1360 defaultroute_delay to better reflect its purpose. If you have
1361 customized this setting in /etc/rc.conf you need to update it to
1365 xorg 7.4 wants to configure its input devices via hald which does not
1366 yet work with USB2. If the keyboard/mouse does not work in xorg then
1368 Option "AllowEmptyInput" "off"
1369 to your ServerLayout section. This will cause X to use the configured
1370 kbd and mouse sections from your xorg.conf.
1373 The GENERIC kernels for all architectures now default to the new USB2
1374 stack. No kernel config options or code have been removed so if a
1375 problem arises please report it and optionally revert to the old USB
1376 stack. If you are loading USB kernel modules or have a custom kernel
1377 that includes GENERIC then ensure that usb names are also changed over,
1378 eg uftdi -> usb2_serial_ftdi.
1380 Older programs linked against the ports libusb 0.1 need to be
1381 redirected to the new stack's libusb20. /etc/libmap.conf can
1383 # Map old usb library to new one for usb2 stack
1384 libusb-0.1.so.8 libusb20.so.1
1387 All USB ethernet devices now attach as interfaces under the name ueN
1388 (eg. ue0). This is to provide a predictable name as vendors often
1389 change usb chipsets in a product without notice.
1392 The ichsmb(4) driver has been changed to require SMBus slave
1393 addresses be left-justified (xxxxxxx0b) rather than right-justified.
1394 All of the other SMBus controller drivers require left-justified
1395 slave addresses, so this change makes all the drivers provide the
1399 INET6 statistics (struct ip6stat) was updated.
1400 netstat(1) needs to be recompiled.
1403 NTFS has been removed from GENERIC kernel on amd64 to match
1404 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
1405 will load ntfs.ko module automatically when NTFS support is
1406 actually needed, unless ntfs.ko is not installed or security
1407 level prohibits loading kernel modules. If either is the case,
1408 "options NTFS" has to be added into kernel config.
1411 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
1412 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
1413 800061. User space tools that rely on the size of struct tcpcb in
1414 tcp_var.h (e.g. sockstat) need to be recompiled.
1417 ng_tty(4) module updated to match the new TTY subsystem.
1418 Due to API change, user-level applications must be updated.
1419 New API support added to mpd5 CVS and expected to be present
1420 in next mpd5.3 release.
1423 With __FreeBSD_version 800060 the makefs tool is part of
1424 the base system (it was a port).
1427 The afdata and ifnet locks have been changed from mutexes to
1428 rwlocks, network modules will need to be re-compiled.
1431 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
1432 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
1433 The new code reduced struct rtentry{} by 16 bytes on 32-bit
1434 architecture and 40 bytes on 64-bit architecture. The userland
1435 applications "arp" and "ndp" have been updated accordingly.
1436 The output from "netstat -r" shows only routing entries and
1437 none of the L2 information.
1440 __FreeBSD_version 800057 marks the switchover from the
1441 binary ath hal to source code. Users must add the line:
1443 options AH_SUPPORT_AR5416
1445 to their kernel config files when specifying:
1449 The ath_hal module no longer exists; the code is now compiled
1450 together with the driver in the ath module. It is now
1451 possible to tailor chip support (i.e. reduce the set of chips
1452 and thereby the code size); consult ath_hal(4) for details.
1455 __FreeBSD_version 800054 adds memory barriers to
1456 <machine/atomic.h>, new interfaces to ifnet to facilitate
1457 multiple hardware transmit queues for cards that support
1458 them, and a lock-less ring-buffer implementation to
1459 enable drivers to more efficiently manage queueing of
1463 A new version of ZFS (version 13) has been merged to -HEAD.
1464 This version has zpool attribute "listsnapshots" off by
1465 default, which means "zfs list" does not show snapshots,
1466 and is the same as Solaris behavior.
1469 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
1472 The uhci, ohci, ehci and slhci USB Host controller drivers have
1473 been put into separate modules. If you load the usb module
1474 separately through loader.conf you will need to load the
1475 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
1476 controller add the following to loader.conf:
1482 The ABI used by the PMC toolset has changed. Please keep
1483 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
1487 atapci kernel module now includes only generic PCI ATA
1488 driver. AHCI driver moved to ataahci kernel module.
1489 All vendor-specific code moved into separate kernel modules:
1490 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
1491 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
1492 atamarvell, atamicron, atanational, atanetcell, atanvidia,
1493 atapromise, ataserverworks, atasiliconimage, atasis, atavia
1496 The TTY subsystem of the kernel has been replaced by a new
1497 implementation, which provides better scalability and an
1498 improved driver model. Most common drivers have been migrated to
1499 the new TTY subsystem, while others have not. The following
1500 drivers have not yet been ported to the new TTY layer:
1503 cy, digi, rc, rp, sio
1509 ng_h4, ng_tty, ppp, sl, snp
1511 Adding these drivers to your kernel configuration file shall
1512 cause compilation to fail.
1515 ntpd has been upgraded to 4.2.4p5.
1518 OpenSSH has been upgraded to 5.1p1.
1520 For many years, FreeBSD's version of OpenSSH preferred DSA
1521 over RSA for host and user authentication keys. With this
1522 upgrade, we've switched to the vendor's default of RSA over
1523 DSA. This may cause upgraded clients to warn about unknown
1524 host keys even for previously known hosts. Users should
1525 follow the usual procedure for verifying host keys before
1526 accepting the RSA key.
1528 This can be circumvented by setting the "HostKeyAlgorithms"
1529 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
1532 Please note that the sequence of keys offered for
1533 authentication has been changed as well. You may want to
1534 specify IdentityFile in a different order to revert this
1538 The sio(4) driver has been removed from the i386 and amd64
1539 kernel configuration files. This means uart(4) is now the
1540 default serial port driver on those platforms as well.
1542 To prevent collisions with the sio(4) driver, the uart(4) driver
1543 uses different names for its device nodes. This means the
1544 onboard serial port will now most likely be called "ttyu0"
1545 instead of "ttyd0". You may need to reconfigure applications to
1546 use the new device names.
1548 When using the serial port as a boot console, be sure to update
1549 /boot/device.hints and /etc/ttys before booting the new kernel.
1550 If you forget to do so, you can still manually specify the hints
1551 at the loader prompt:
1553 set hint.uart.0.at="isa"
1554 set hint.uart.0.port="0x3F8"
1555 set hint.uart.0.flags="0x10"
1556 set hint.uart.0.irq="4"
1560 The gpt(8) utility has been removed. Use gpart(8) to partition
1564 The version that Linuxulator emulates was changed from 2.4.2
1565 to 2.6.16. If you experience any problems with Linux binaries
1566 please try to set sysctl compat.linux.osrelease to 2.4.2 and
1567 if it fixes the problem contact emulation mailing list.
1570 ISDN4BSD (I4B) was removed from the src tree. You may need to
1571 update a your kernel configuration and remove relevant entries.
1574 I have checked in code to support multiple routing tables.
1575 See the man pages setfib(1) and setfib(2).
1576 This is a hopefully backwards compatible version,
1577 but to make use of it you need to compile your kernel
1578 with options ROUTETABLES=2 (or more up to 16).
1581 The 802.11 wireless support was redone to enable multi-bss
1582 operation on devices that are capable. The underlying device
1583 is no longer used directly but instead wlanX devices are
1584 cloned with ifconfig. This requires changes to rc.conf files.
1585 For example, change:
1586 ifconfig_ath0="WPA DHCP"
1589 ifconfig_wlan0="WPA DHCP"
1590 see rc.conf(5) for more details. In addition, mergemaster of
1591 /etc/rc.d is highly recommended. Simultaneous update of userland
1592 and kernel wouldn't hurt either.
1594 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
1595 modules were merged into the base wlan module. All references
1596 to these modules (e.g. in kernel config files) must be removed.
1599 psm(4) has gained write(2) support in native operation level.
1600 Arbitrary commands can be written to /dev/psm%d and status can
1601 be read back from it. Therefore, an application is responsible
1602 for status validation and error recovery. It is a no-op in
1603 other operation levels.
1606 Support for KSE threading has been removed from the kernel. To
1607 run legacy applications linked against KSE libmap.conf may
1608 be used. The following libmap.conf may be used to ensure
1609 compatibility with any prior release:
1611 libpthread.so.1 libthr.so.1
1612 libpthread.so.2 libthr.so.2
1613 libkse.so.3 libthr.so.3
1616 The layout of struct vmspace has changed. This affects libkvm
1617 and any executables that link against libkvm and use the
1618 kvm_getprocs() function. In particular, but not exclusively,
1619 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
1620 The effects are minimal, but it's advisable to upgrade world
1624 The latest em driver no longer has support in it for the
1625 82575 adapter, this is now moved to the igb driver. The
1626 split was done to make new features that are incompatible
1627 with older hardware easier to do.
1630 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
1631 likewise the kernel option is now GEOM_LINUX_LVM.
1634 The default NFS mount mode has changed from UDP to TCP for
1635 increased reliability. If you rely on (insecurely) NFS
1636 mounting across a firewall you may need to update your
1640 Belatedly note the addition of m_collapse for compacting
1644 The fts(3) structures have been changed to use adequate
1645 integer types for their members and so to be able to cope
1646 with huge file trees. The old fts(3) ABI is preserved
1647 through symbol versioning in libc, so third-party binaries
1648 using fts(3) should still work, although they will not take
1649 advantage of the extended types. At the same time, some
1650 third-party software might fail to build after this change
1651 due to unportable assumptions made in its source code about
1652 fts(3) structure members. Such software should be fixed
1653 by its vendor or, in the worst case, in the ports tree.
1654 FreeBSD_version 800015 marks this change for the unlikely
1655 case that a portable fix is impossible.
1658 To upgrade to -current after this date, you must be running
1659 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
1660 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
1663 The ADAPTIVE_GIANT kernel option has been retired because its
1664 functionality is the default now.
1667 The AT keyboard emulation of sunkbd(4) has been turned on
1668 by default. In order to make the special symbols of the Sun
1669 keyboards driven by sunkbd(4) work under X these now have
1670 to be configured the same way as Sun USB keyboards driven
1671 by ukbd(4) (which also does AT keyboard emulation), f.e.:
1673 Option "XkbLayout" "us"
1674 Option "XkbRules" "xorg"
1675 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
1678 It has been decided that it is desirable to provide ABI
1679 backwards compatibility to the FreeBSD 4/5/6 versions of the
1680 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
1681 broken with the introduction of PCI domain support (see the
1682 20070930 entry). Unfortunately, this required the ABI of
1683 PCIOCGETCONF to be broken again in order to be able to
1684 provide backwards compatibility to the old version of that
1685 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
1686 again. As for prominent ports this affects neither pciutils
1687 nor xorg-server this time, the hal port needs to be rebuilt
1691 The misnamed kthread_create() and friends have been renamed
1692 to kproc_create() etc. Many of the callers already
1693 used kproc_start()..
1694 I will return kthread_create() and friends in a while
1695 with implementations that actually create threads, not procs.
1696 Renaming corresponds with version 800002.
1705 Avoid using make -j when upgrading. While generally safe, there are
1706 sometimes problems using -j to upgrade. If your upgrade fails with
1707 -j, please try again without -j. From time to time in the past there
1708 have been problems using -j with buildworld and/or installworld. This
1709 is especially true when upgrading between "distant" versions (eg one
1710 that cross a major release boundary or several minor releases, or when
1711 several months have passed on the -current branch).
1713 Sometimes, obscure build problems are the result of environment
1714 poisoning. This can happen because the make utility reads its
1715 environment when searching for values for global variables. To run
1716 your build attempts in an "environmental clean room", prefix all make
1717 commands with 'env -i '. See the env(1) manual page for more details.
1719 When upgrading from one major version to another it is generally best
1720 to upgrade to the latest code in the currently installed branch first,
1721 then do an upgrade to the new branch. This is the best-tested upgrade
1722 path, and has the highest probability of being successful. Please try
1723 this approach before reporting problems with a major version upgrade.
1727 When upgrading the boot ZFS pool to a new version, always follow
1730 1.) recompile and reinstall the ZFS boot loader and boot block
1731 (this is part of "make buildworld" and "make installworld")
1733 2.) update the ZFS boot block on your boot drive
1735 The following example updates the ZFS boot block on the first
1736 partition (freebsd-boot) of a GPT partitioned drive ad0:
1737 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
1739 Non-boot pools do not need these updates.
1743 If you are updating from a prior version of FreeBSD (even one just
1744 a few days old), you should follow this procedure. It is the most
1745 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1747 make kernel-toolchain
1748 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1749 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1751 To test a kernel once
1752 ---------------------
1753 If you just want to boot a kernel once (because you are not sure
1754 if it works, or if you want to boot a known bad kernel to provide
1755 debugging information) run
1756 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1757 nextboot -k testkernel
1759 To just build a kernel when you know that it won't mess you up
1760 --------------------------------------------------------------
1761 This assumes you are already running a CURRENT system. Replace
1762 ${arch} with the architecture of your machine (e.g. "i386",
1763 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc).
1765 cd src/sys/${arch}/conf
1766 config KERNEL_NAME_HERE
1767 cd ../compile/KERNEL_NAME_HERE
1772 If this fails, go to the "To build a kernel" section.
1774 To rebuild everything and install it on the current system.
1775 -----------------------------------------------------------
1776 # Note: sometimes if you are running current you gotta do more than
1777 # is listed here if you are upgrading from a really old current.
1779 <make sure you have good level 0 dumps>
1781 make kernel KERNCONF=YOUR_KERNEL_HERE
1783 <reboot in single user> [3]
1791 To cross-install current onto a separate partition
1792 --------------------------------------------------
1793 # In this approach we use a separate partition to hold
1794 # current's root, 'usr', and 'var' directories. A partition
1795 # holding "/", "/usr" and "/var" should be about 2GB in
1798 <make sure you have good level 0 dumps>
1801 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1802 <maybe newfs current's root partition>
1803 <mount current's root partition on directory ${CURRENT_ROOT}>
1804 make installworld DESTDIR=${CURRENT_ROOT}
1805 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1806 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1807 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1808 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1809 <reboot into current>
1810 <do a "native" rebuild/install as described in the previous section>
1811 <maybe install compatibility libraries from ports/misc/compat*>
1815 To upgrade in-place from stable to current
1816 ----------------------------------------------
1817 <make sure you have good level 0 dumps>
1819 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1821 <reboot in single user> [3]
1828 Make sure that you've read the UPDATING file to understand the
1829 tweaks to various things you need. At this point in the life
1830 cycle of current, things change often and you are on your own
1831 to cope. The defaults can also change, so please read ALL of
1832 the UPDATING entries.
1834 Also, if you are tracking -current, you must be subscribed to
1835 freebsd-current@freebsd.org. Make sure that before you update
1836 your sources that you have read and understood all the recent
1837 messages there. If in doubt, please track -stable which has
1838 much fewer pitfalls.
1840 [1] If you have third party modules, such as vmware, you
1841 should disable them at this point so they don't crash your
1844 [3] From the bootblocks, boot -s, and then do
1849 adjkerntz -i # if CMOS is wall time
1850 Also, when doing a major release upgrade, it is required that
1851 you boot into single user mode to do the installworld.
1853 [4] Note: This step is non-optional. Failure to do this step
1854 can result in a significant reduction in the functionality of the
1855 system. Attempting to do it by hand is not recommended and those
1856 that pursue this avenue should read this file carefully, as well
1857 as the archives of freebsd-current and freebsd-hackers mailing lists
1858 for potential gotchas. The -U option is also useful to consider.
1859 See mergemaster(8) for more information.
1861 [5] Usually this step is a noop. However, from time to time
1862 you may need to do this if you get unknown user in the following
1863 step. It never hurts to do it all the time. You may need to
1864 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1865 install) after the buildworld before this step if you last updated
1866 from [78]-stable or 9-stable before 20130430.
1868 [6] This only deletes old files and directories. Old libraries
1869 can be deleted by "make delete-old-libs", but you have to make
1870 sure that no program is using those libraries anymore.
1872 [8] In order to have a kernel that can run the 4.x binaries needed to
1873 do an installworld, you must include the COMPAT_FREEBSD4 option in
1874 your kernel. Failure to do so may leave you with a system that is
1875 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is
1876 required to run the 5.x binaries on more recent kernels. And so on
1877 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7.
1879 Make sure that you merge any new devices from GENERIC since the
1880 last time you updated your kernel config file.
1882 [9] When checking out sources, you must include the -P flag to have
1883 cvs prune empty directories.
1885 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1886 "?=" instead of the "=" assignment operator, so that buildworld can
1887 override the CPUTYPE if it needs to.
1889 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1890 not on the command line, or in /etc/make.conf. buildworld will
1891 warn if it is improperly defined.
1894 This file contains a list, in reverse chronological order, of major
1895 breakages in tracking -current. It is not guaranteed to be a complete
1896 list of such breakages, and only contains entries since October 10, 2007.
1897 If you need to see UPDATING entries from before that date, you will need
1898 to fetch an UPDATING file from an older FreeBSD release.
1900 Copyright information:
1902 Copyright 1998-2009 M. Warner Losh. All Rights Reserved.
1904 Redistribution, publication, translation and use, with or without
1905 modification, in full or in part, in any form or format of this
1906 document are permitted without further permission from the author.
1908 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1909 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1910 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1911 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1912 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1913 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1914 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1915 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1916 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1917 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1918 POSSIBILITY OF SUCH DAMAGE.
1920 Contact Warner Losh if you have any questions about your use of
projects / FreeBSD / releng / 9.3.git / blob