1 Updating Information for FreeBSD current users
3 This file is maintained and copyrighted by M. Warner Losh
4 <imp@village.org>. See end of file for further details. For commonly
5 done items, please see the COMMON ITEMS: section later in the file.
7 Items affecting the ports and packages system can be found in
8 /usr/ports/UPDATING. Please read that file before running
11 NOTE TO PEOPLE WHO THINK THAT FreeBSD 8.x IS SLOW ON IA64 OR SUN4V:
12 For ia64 the INVARIANTS and INVARIANT_SUPPORT kernel options
13 were left in the GENERIC kernel because the kernel does not
14 work properly without them. For sun4v all of the normal kernel
15 debugging tools present in HEAD were left in place because
16 sun4v support still needs work to become production ready.
18 20111223: p7 FreeBSD-SA-11:06.bind, FreeBSD-SA-11:07.chroot
19 FreeBSD-SA-11:08.telnetd, FreeBSD-SA-11:09.pam_ssh
21 Fix a problem whereby a corrupt DNS record can cause named to crash.
24 Add an API for alerting internal libc routines to the presence of
25 "unsafe" paths post-chroot, and use it in ftpd. [11:07]
27 Fix a buffer overflow in telnetd. [11:08]
29 Make pam_ssh ignore unpassphrased keys unless the "nullok" option is
32 Add sanity checking of service names in pam_start. [11:10]
34 20111004: p6 FreeBSD-SA-11:05.unix (revised)
35 Fix a bug in UNIX socket handling in the linux emulator which was
36 exposed by the security fix in FreeBSD-SA-11:05.unix.
38 20110928: p5 FreeBSD-SA-11:04.compress, FreeBSD-SA-11:05.unix
39 Fix handling of corrupt compress(1)ed data. [11:04]
41 Add missing length checks on unix socket addresses. [11:05]
43 20110528: p4 FreeBSD-SA-11:02.bind
44 Fix BIND remote DoS with large RRSIG RRsets and negative
47 20110420: p3 FreeBSD-SA-11:01.mountd
48 Fix CIDR parsing bug in mountd ACLs.
50 20101129: p2 FreeBSD-SA-10:10.openssl
51 Fix OpenSSL multiple vulnerabilities.
53 20100920: p1 FreeBSD-SA-10:08.bzip2
54 Fix an integer overflow in RLE length parsing when decompressing
60 20100713: FreeBSD-SA-10:07.mbuf
61 Correctly copy the M_RDONLY flag when duplicating a reference
62 to an mbuf external buffer.
65 The config(8) command has been updated to maintain compatibility
66 with config files from 8.0-RELEASE. You will need a new version
67 of config to build kernels (this version can be used from 8.0-RELEASE
68 forward). The buildworld target will generate it, so following
69 the instructions in this file for updating will work glitch-free.
70 Merely doing a make buildkernel without first doing a make buildworld
71 (or kernel-toolchain), or attempting to build a kernel using
72 traidtional methods will generate a config version warning, indicating
76 The rc.firewall and rc.firewall6 were unified, and
77 rc.firewall6 and rc.d/ip6fw were removed.
78 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
79 variables are obsoleted. Instead, the following new rc
80 variables are added to rc.d/ipfw:
82 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
83 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
84 firewall_simple_onet_ipv6
86 The meanings correspond to the relevant IPv4 variables.
89 COMPAT_IA32 has been added as an alias for COMPAT_FREEBSD32. A new
90 version of config(8) is required. The error message when you hit this
91 condition is confusing (COMPAT_FREEBSD32 duplicate option), when it
92 should really say "your config is too old to compile this new kernel."
95 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
96 to allow 32-bit compatibility on non-x86 platforms. All kernel
97 configurations on amd64 and ia64 platforms using these options must
98 be modified accordingly.
101 Introduce the kernel thread "deadlock resolver" (which can be enabled
102 via the DEADLKRES option, see NOTES for more details) and the
103 sleepq_type() function for sleepqueues.
109 802.11s D3.03 support was committed. This is incompatible with
110 the previous code, which was based on D3.0.
113 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
114 mount(8) and -a option for df(1) to see them.
117 Remove the option STOP_NMI. The default action is now to use NMI
118 only for KDB via the newly introduced function stop_cpus_hard()
119 and maintain stop_cpus() to just use a normal IPI_STOP on ia32
126 Bump the shared library version numbers for all libraries that
127 do not use symbol versioning as part of the 8.0-RELEASE cycle.
128 Bump __FreeBSD_version to 800105.
131 Due to changes in the implementation of virtual network stack
132 support, all network-related kernel modules must be recompiled.
133 As this change breaks the ABI, bump __FreeBSD_version to 800104.
136 The TOE interface to the TCP syncache has been modified to remove struct
137 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
138 cxgb driver is the only TOE consumer affected by this change, and needs
139 to be recompiled along with the kernel. As this change breaks the ABI,
140 bump __FreeBSD_version to 800103.
143 Padding has been added to struct tcpcb, sackhint and tcpstat in
144 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
145 maintainig the ABI. However, this change breaks the ABI, so bump
146 __FreeBSD_version to 800102. User space tools that rely on the size of
147 any of these structs (e.g. sockstat) need to be recompiled.
150 The NFS_LEGACYRPC option has been removed along with the old
151 kernel RPC implementation that this option selected. Kernel
152 configurations may need to be adjusted.
155 The network interface device nodes at /dev/net/<interface> have
156 been removed. All ioctl operations can be performed the normal
157 way using routing sockets. The kqueue functionality can
158 generally be replaced with routing sockets.
161 The documentation from the FreeBSD Documentation Project
162 (Handbook, FAQ, etc.) is now installed via packages by
163 sysinstall(8) and under the /usr/local/share/doc/freebsd
164 directory instead of /usr/share/doc.
167 The ABI of various structures related to the SYSV IPC API have
168 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
169 kernel options now all require COMPAT_FREEBSD7.
170 Bump __FreeBSD_version to 800100.
173 Layout of struct vnet has changed as routing related variables
174 were moved to their own Vimage module. Modules need to be
175 recompiled. Bump __FreeBSD_version to 800099.
178 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
179 and 1024 respectively. As long as no more than 16 groups per
180 process are used, no changes should be visible. When more
181 than 16 groups are used, old binaries may fail if they call
182 getgroups() or getgrouplist() with statically sized storage.
183 Recompiling will work around this, but applications should be
184 modified to use dynamically allocated storage for group arrays
185 as POSIX.1-2008 does not cap an implementation's number of
186 supported groups at NGROUPS_MAX+1 as previous versions did.
188 NFS and portalfs mounts may also be affected as the list of
189 groups is truncated to 16. Users of NFS who use more than 16
190 groups, should take care that negative group permissions are not
191 used on the exported file systems as they will not be reliable
192 unless a GSSAPI based authentication method is used.
195 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
196 This option compiles in the support for adaptive spinning for lockmgrs
197 which want to enable it. The lockinit() function now accepts the
198 flag LK_ADAPTIVE in order to make the lock object subject to
199 adaptive spinning when both held in write and read mode.
202 The layout of the structure returned by IEEE80211_IOC_STA_INFO
203 has changed. User applications that use this ioctl need to be
207 The layout of struct thread has changed. Kernel and modules
211 The layout of structs ifnet, domain, protosw and vnet_net has
212 changed. Kernel modules need to be rebuilt.
213 Bump __FreeBSD_version to 800097.
216 window(1) has been removed from the base system. It can now be
217 installed from ports. The port is called misc/window.
220 The way we are storing and accessing `routing table' entries
221 has changed. Programs reading the FIB, like netstat, need to
225 A new netisr implementation has been added for FreeBSD 8. Network
226 file system modules, such as igmp, ipdivert, and others, should be
228 Bump __FreeBSD_version to 800096.
231 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
235 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
236 Bump __FreeBSD_version to 800094.
239 Add mnt_xflag field to 'struct mount'. File system modules
241 Bump __FreeBSD_version to 800093.
244 The compiling option ADAPTIVE_SX has been retired while it has been
245 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
246 The KPI for sx_init_flags() changes as accepting flags:
247 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
248 has been introduced in order to handle the reversed logic.
249 Bump __FreeBSD_version to 800092.
252 Add support for hierarchical jails. Remove global securelevel.
253 Bump __FreeBSD_version to 800091.
256 The layout of struct vnet_net has changed, therefore modules
258 Bump __FreeBSD_version to 800090.
261 The newly imported zic(8) produces a new format in the
262 output. Please run tzsetup(8) to install the newly created
263 data to /etc/localtime.
266 The sysctl tree for the usb stack has renamed from hw.usb2.* to
267 hw.usb.* and is now consistent again with previous releases.
270 802.11 monitor mode support was revised and driver api's
271 were changed. Drivers dependent on net80211 now support
272 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
273 user-visible data structures were changed but applications
274 that use DLT_IEEE802_11 may require changes.
275 Bump __FreeBSD_version to 800088.
278 The layout of the following structs has changed: sysctl_oid,
279 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
280 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
281 panics may be experienced. World rebuild is required for
282 correctly checking networking state from userland.
283 Bump __FreeBSD_version to 800085.
286 MLDv2 and Source-Specific Multicast (SSM) have been merged
287 to the IPv6 stack. VIMAGE hooks are in but not yet used.
288 The implementation of SSM within FreeBSD's IPv6 stack closely
289 follows the IPv4 implementation.
291 For kernel developers:
293 * The most important changes are that the ip6_output() and
294 ip6_input() paths no longer take the IN6_MULTI_LOCK,
295 and this lock has been downgraded to a non-recursive mutex.
297 * As with the changes to the IPv4 stack to support SSM, filtering
298 of inbound multicast traffic must now be performed by transport
299 protocols within the IPv6 stack. This does not apply to TCP and
300 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
302 * The KPIs used by IPv6 multicast are similar to those used by
303 the IPv4 stack, with the following differences:
304 * im6o_mc_filter() is analogous to imo_multicast_filter().
305 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
306 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
307 * IN6_LOOKUP_MULTI() has been deprecated and removed.
308 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
309 for MLDv1 have an additional 'timer' argument which is used to
310 jitter the initial membership report for the solicited-node
311 multicast membership on-link.
312 * This is not strictly needed for MLDv2, which already jitters
313 its report transmissions. However, the 'timer' argument is
314 preserved in case MLDv1 is active on the interface.
316 * The KAME linked-list based IPv6 membership implementation has
317 been refactored to use a vector similar to that used by the IPv4
319 Code which maintains a list of its own multicast memberships
320 internally, e.g. carp, has been updated to reflect the new
323 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
324 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
325 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
326 implementation constraint which needs to be addressed in HEAD.
328 For application developers:
330 * The changes are broadly similar to those made for the IPv4
333 * The use of IPv4 and IPv6 multicast socket options on the same
334 socket, using mapped addresses, HAS NOT been tested or supported.
336 * There are a number of issues with the implementation of various
337 IPv6 multicast APIs which need to be resolved in the API surface
338 before the implementation is fully compatible with KAME userland
339 use, and these are mostly to do with interface index treatment.
341 * The literature available discusses the use of either the delta / ASM
342 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
343 using setsourcefilter(3)/getsourcefilter(3). For more information
344 please refer to RFC 3768, 'Socket Interface Extensions for
345 Multicast Source Filters'.
347 * Applications which use the published RFC 3678 APIs should be fine.
349 For systems administrators:
351 * The mtest(8) utility has been refactored to support IPv6, in
352 addition to IPv4. Interface addresses are no longer accepted
353 as arguments, their names must be used instead. The utility
354 will map the interface name to its first IPv4 address as
355 returned by getifaddrs(3).
357 * The ifmcstat(8) utility has also been updated to print the MLDv2
358 endpoint state and source filter lists via sysctl(3).
360 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
361 loopback of IPv6 multicast datagrams by default; it defaults to 1
362 to preserve the existing behaviour. Disabling multicast loopback is
363 recommended for optimal system performance.
365 * The IPv6 MROUTING code has been changed to examine this sysctl
366 instead of attempting to perform a group lookup before looping
367 back forwarded datagrams.
369 Bump __FreeBSD_version to 800084.
372 Implement low-level Bluetooth HCI API.
373 Bump __FreeBSD_version to 800083.
376 The layout of struct malloc_type, used by modules to register new
377 memory allocation types, has changed. Most modules will need to
378 be rebuilt or panics may be experienced.
379 Bump __FreeBSD_version to 800081.
382 Anticipate overflowing inp_flags - add inp_flags2.
383 This changes most offsets in inpcb, so checking v4 connection
384 state will require a world rebuild.
385 Bump __FreeBSD_version to 800080.
388 Add an llentry to struct route and struct route_in6. Modules
389 embedding a struct route will need to be recompiled.
390 Bump __FreeBSD_version to 800079.
393 The size of rt_metrics_lite and by extension rtentry has changed.
394 Networking administration apps will need to be recompiled.
395 The route command now supports show as an alias for get, weighting
396 of routes, sticky and nostick flags to alter the behavior of stateful
398 Bump __FreeBSD_version to 800078.
401 Do not use Giant for kbdmux(4) locking. This is wrong and
402 apparently causing more problems than it solves. This will
403 re-open the issue where interrupt handlers may race with
404 kbdmux(4) in polling mode. Typical symptoms include (but
405 not limited to) duplicated and/or missing characters when
406 low level console functions (such as gets) are used while
407 interrupts are enabled (for example geli password prompt,
408 mountroot prompt etc.). Disabling kbdmux(4) may help.
411 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
412 kernel modules referencing any of the above need to be recompiled.
413 Bump __FreeBSD_version to 800075.
416 GEOM_PART has become the default partition slicer for storage devices,
417 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
418 introduces some changes:
420 MSDOS/EBR: the devices created from MSDOS extended partition entries
421 (EBR) can be named differently than with GEOM_MBR and are now symlinks
422 to devices with offset-based names. fstabs may need to be modified.
424 BSD: the "geometry does not match label" warning is harmless in most
425 cases but it points to problems in file system misalignment with
426 disk geometry. The "c" partition is now implicit, covers the whole
427 top-level drive and cannot be (mis)used by users.
429 General: Kernel dumps are now not allowed to be written to devices
430 whose partition types indicate they are meant to be used for file
431 systems (or, in case of MSDOS partitions, as something else than
434 Most of these changes date approximately from 200812.
437 The uscanner(4) driver has been removed from the kernel. This follows
438 Linux removing theirs in 2.6 and making libusb the default interface
442 The multicast forwarding code has been cleaned up. netstat(1)
443 only relies on KVM now for printing bandwidth upcall meters.
444 The IPv4 and IPv6 modules are split into ip_mroute_mod and
445 ip6_mroute_mod respectively. The config(5) options for statically
446 compiling this code remain the same, i.e. 'options MROUTING'.
449 Support for the IFF_NEEDSGIANT network interface flag has been
450 removed, which means that non-MPSAFE network device drivers are no
451 longer supported. In particular, if_ar, if_sr, and network device
452 drivers from the old (legacy) USB stack can no longer be built or
456 POSIX.1 Native Language Support (NLS) has been enabled in libc and
457 a bunch of new language catalog files have also been added.
458 This means that some common libc messages are now localized and
459 they depend on the LC_MESSAGES environmental variable.
462 The k8temp(4) driver has been renamed to amdtemp(4) since
463 support for K10 and K11 CPU families was added.
466 IGMPv3 and Source-Specific Multicast (SSM) have been merged
467 to the IPv4 stack. VIMAGE hooks are in but not yet used.
469 For kernel developers, the most important changes are that the
470 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
471 and this lock has been downgraded to a non-recursive mutex.
473 Transport protocols (UDP, Raw IP) are now responsible for filtering
474 inbound multicast traffic according to group membership and source
475 filters. The imo_multicast_filter() KPI exists for this purpose.
476 Transports which do not use multicast (SCTP, TCP) already reject
477 multicast by default. Forwarding and receive performance may improve
478 as a mutex acquisition is no longer needed in the ip_input()
479 low-level input path. in_addmulti() and in_delmulti() are shimmed
480 to new KPIs which exist to support SSM in-kernel.
482 For application developers, it is recommended that loopback of
483 multicast datagrams be disabled for best performance, as this
484 will still cause the lock to be taken for each looped-back
485 datagram transmission. The net.inet.ip.mcast.loop sysctl may
486 be tuned to 0 to disable loopback by default; it defaults to 1
487 to preserve the existing behaviour.
489 For systems administrators, to obtain best performance with
490 multicast reception and multiple groups, it is always recommended
491 that a card with a suitably precise hash filter is used. Hash
492 collisions will still result in the lock being taken within the
493 transport protocol input path to check group membership.
495 If deploying FreeBSD in an environment with IGMP snooping switches,
496 it is recommended that the net.inet.igmp.sendlocal sysctl remain
497 enabled; this forces 224.0.0.0/24 group membership to be announced
500 The size of 'struct igmpstat' has changed; netstat needs to be
501 recompiled to reflect this.
502 Bump __FreeBSD_version to 800070.
505 libusb20.so.1 is now installed as libusb.so.1 and the ports system
506 updated to use it. This requires a buildworld/installworld in order to
507 update the library and dependencies (usbconfig, etc). Its advisable to
508 rebuild all ports which uses libusb. More specific directions are given
509 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
510 libusb are no longer required and can be removed.
513 A workaround is committed to allow the creation of System V shared
514 memory segment of size > 2 GB on the 64-bit architectures.
515 Due to a limitation of the existing ABI, the shm_segsz member
516 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
517 wrong for large segments. Note that limits must be explicitly
518 raised to allow such segments to be created.
521 The layout of struct ifnet has changed, requiring a rebuild of all
522 network device driver modules.
525 The /dev handling for the new USB stack has changed, a
526 buildworld/installworld is required for libusb20.
529 The new USB2 stack has now been permanently moved in and all kernel and
530 module names reverted to their previous values (eg, usb, ehci, ohci,
531 ums, ...). The old usb stack can be compiled in by prefixing the name
532 with the letter 'o', the old usb modules have been removed.
533 Updating entry 20090216 for xorg and 20090215 for libmap may still
537 The rc.conf(5) option if_up_delay has been renamed to
538 defaultroute_delay to better reflect its purpose. If you have
539 customized this setting in /etc/rc.conf you need to update it to
543 xorg 7.4 wants to configure its input devices via hald which does not
544 yet work with USB2. If the keyboard/mouse does not work in xorg then
546 Option "AllowEmptyInput" "off"
547 to your ServerLayout section. This will cause X to use the configured
548 kbd and mouse sections from your xorg.conf.
551 The GENERIC kernels for all architectures now default to the new USB2
552 stack. No kernel config options or code have been removed so if a
553 problem arises please report it and optionally revert to the old USB
554 stack. If you are loading USB kernel modules or have a custom kernel
555 that includes GENERIC then ensure that usb names are also changed over,
556 eg uftdi -> usb2_serial_ftdi.
558 Older programs linked against the ports libusb 0.1 need to be
559 redirected to the new stack's libusb20. /etc/libmap.conf can
561 # Map old usb library to new one for usb2 stack
562 libusb-0.1.so.8 libusb20.so.1
565 All USB ethernet devices now attach as interfaces under the name ueN
566 (eg. ue0). This is to provide a predictable name as vendors often
567 change usb chipsets in a product without notice.
570 The ichsmb(4) driver has been changed to require SMBus slave
571 addresses be left-justified (xxxxxxx0b) rather than right-justified.
572 All of the other SMBus controller drivers require left-justified
573 slave addresses, so this change makes all the drivers provide the
577 INET6 statistics (struct ip6stat) was updated.
578 netstat(1) needs to be recompiled.
581 NTFS has been removed from GENERIC kernel on amd64 to match
582 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
583 will load ntfs.ko module automatically when NTFS support is
584 actually needed, unless ntfs.ko is not installed or security
585 level prohibits loading kernel modules. If either is the case,
586 "options NTFS" has to be added into kernel config.
589 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
590 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
591 800061. User space tools that rely on the size of struct tcpcb in
592 tcp_var.h (e.g. sockstat) need to be recompiled.
595 ng_tty(4) module updated to match the new TTY subsystem.
596 Due to API change, user-level applications must be updated.
597 New API support added to mpd5 CVS and expected to be present
598 in next mpd5.3 release.
601 With __FreeBSD_version 800060 the makefs tool is part of
602 the base system (it was a port).
605 The afdata and ifnet locks have been changed from mutexes to
606 rwlocks, network modules will need to be re-compiled.
609 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
610 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
611 The new code reduced struct rtentry{} by 16 bytes on 32-bit
612 architecture and 40 bytes on 64-bit architecture. The userland
613 applications "arp" and "ndp" have been updated accordingly.
614 The output from "netstat -r" shows only routing entries and
615 none of the L2 information.
618 __FreeBSD_version 800057 marks the switchover from the
619 binary ath hal to source code. Users must add the line:
621 options AH_SUPPORT_AR5416
623 to their kernel config files when specifying:
627 The ath_hal module no longer exists; the code is now compiled
628 together with the driver in the ath module. It is now
629 possible to tailor chip support (i.e. reduce the set of chips
630 and thereby the code size); consult ath_hal(4) for details.
633 __FreeBSD_version 800054 adds memory barriers to
634 <machine/atomic.h>, new interfaces to ifnet to facilitate
635 multiple hardware transmit queues for cards that support
636 them, and a lock-less ring-buffer implementation to
637 enable drivers to more efficiently manage queueing of
641 A new version of ZFS (version 13) has been merged to -HEAD.
642 This version has zpool attribute "listsnapshots" off by
643 default, which means "zfs list" does not show snapshots,
644 and is the same as Solaris behavior.
647 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
650 The uhci, ohci, ehci and slhci USB Host controller drivers have
651 been put into separate modules. If you load the usb module
652 separately through loader.conf you will need to load the
653 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
654 controller add the following to loader.conf:
660 The ABI used by the PMC toolset has changed. Please keep
661 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
665 atapci kernel module now includes only generic PCI ATA
666 driver. AHCI driver moved to ataahci kernel module.
667 All vendor-specific code moved into separate kernel modules:
668 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
669 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
670 atamarvell, atamicron, atanational, atanetcell, atanvidia,
671 atapromise, ataserverworks, atasiliconimage, atasis, atavia
674 The TTY subsystem of the kernel has been replaced by a new
675 implementation, which provides better scalability and an
676 improved driver model. Most common drivers have been migrated to
677 the new TTY subsystem, while others have not. The following
678 drivers have not yet been ported to the new TTY layer:
681 cy, digi, rc, rp, sio
687 ng_h4, ng_tty, ppp, sl, snp
689 Adding these drivers to your kernel configuration file shall
690 cause compilation to fail.
693 ntpd has been upgraded to 4.2.4p5.
696 OpenSSH has been upgraded to 5.1p1.
698 For many years, FreeBSD's version of OpenSSH preferred DSA
699 over RSA for host and user authentication keys. With this
700 upgrade, we've switched to the vendor's default of RSA over
701 DSA. This may cause upgraded clients to warn about unknown
702 host keys even for previously known hosts. Users should
703 follow the usual procedure for verifying host keys before
704 accepting the RSA key.
706 This can be circumvented by setting the "HostKeyAlgorithms"
707 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
710 Please note that the sequence of keys offered for
711 authentication has been changed as well. You may want to
712 specify IdentityFile in a different order to revert this
716 The sio(4) driver has been removed from the i386 and amd64
717 kernel configuration files. This means uart(4) is now the
718 default serial port driver on those platforms as well.
720 To prevent collisions with the sio(4) driver, the uart(4) driver
721 uses different names for its device nodes. This means the
722 onboard serial port will now most likely be called "ttyu0"
723 instead of "ttyd0". You may need to reconfigure applications to
724 use the new device names.
726 When using the serial port as a boot console, be sure to update
727 /boot/device.hints and /etc/ttys before booting the new kernel.
728 If you forget to do so, you can still manually specify the hints
729 at the loader prompt:
731 set hint.uart.0.at="isa"
732 set hint.uart.0.port="0x3F8"
733 set hint.uart.0.flags="0x10"
734 set hint.uart.0.irq="4"
738 The gpt(8) utility has been removed. Use gpart(8) to partition
742 The version that Linuxulator emulates was changed from 2.4.2
743 to 2.6.16. If you experience any problems with Linux binaries
744 please try to set sysctl compat.linux.osrelease to 2.4.2 and
745 if it fixes the problem contact emulation mailing list.
748 ISDN4BSD (I4B) was removed from the src tree. You may need to
749 update a your kernel configuration and remove relevant entries.
752 I have checked in code to support multiple routing tables.
753 See the man pages setfib(1) and setfib(2).
754 This is a hopefully backwards compatible version,
755 but to make use of it you need to compile your kernel
756 with options ROUTETABLES=2 (or more up to 16).
759 The 802.11 wireless support was redone to enable multi-bss
760 operation on devices that are capable. The underlying device
761 is no longer used directly but instead wlanX devices are
762 cloned with ifconfig. This requires changes to rc.conf files.
764 ifconfig_ath0="WPA DHCP"
767 ifconfig_wlan0="WPA DHCP"
768 see rc.conf(5) for more details. In addition, mergemaster of
769 /etc/rc.d is highly recommended. Simultaneous update of userland
770 and kernel wouldn't hurt either.
772 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
773 modules were merged into the base wlan module. All references
774 to these modules (e.g. in kernel config files) must be removed.
777 psm(4) has gained write(2) support in native operation level.
778 Arbitrary commands can be written to /dev/psm%d and status can
779 be read back from it. Therefore, an application is responsible
780 for status validation and error recovery. It is a no-op in
781 other operation levels.
784 Support for KSE threading has been removed from the kernel. To
785 run legacy applications linked against KSE libmap.conf may
786 be used. The following libmap.conf may be used to ensure
787 compatibility with any prior release:
789 libpthread.so.1 libthr.so.1
790 libpthread.so.2 libthr.so.2
791 libkse.so.3 libthr.so.3
794 The layout of struct vmspace has changed. This affects libkvm
795 and any executables that link against libkvm and use the
796 kvm_getprocs() function. In particular, but not exclusively,
797 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
798 The effects are minimal, but it's advisable to upgrade world
802 The latest em driver no longer has support in it for the
803 82575 adapter, this is now moved to the igb driver. The
804 split was done to make new features that are incompatible
805 with older hardware easier to do.
808 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
809 likewise the kernel option is now GEOM_LINUX_LVM.
812 The default NFS mount mode has changed from UDP to TCP for
813 increased reliability. If you rely on (insecurely) NFS
814 mounting across a firewall you may need to update your
818 Belatedly note the addition of m_collapse for compacting
822 The fts(3) structures have been changed to use adequate
823 integer types for their members and so to be able to cope
824 with huge file trees. The old fts(3) ABI is preserved
825 through symbol versioning in libc, so third-party binaries
826 using fts(3) should still work, although they will not take
827 advantage of the extended types. At the same time, some
828 third-party software might fail to build after this change
829 due to unportable assumptions made in its source code about
830 fts(3) structure members. Such software should be fixed
831 by its vendor or, in the worst case, in the ports tree.
832 FreeBSD_version 800015 marks this change for the unlikely
833 case that a portable fix is impossible.
836 To upgrade to -current after this date, you must be running
837 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
838 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
841 The ADAPTIVE_GIANT kernel option has been retired because its
842 functionality is the default now.
845 The AT keyboard emulation of sunkbd(4) has been turned on
846 by default. In order to make the special symbols of the Sun
847 keyboards driven by sunkbd(4) work under X these now have
848 to be configured the same way as Sun USB keyboards driven
849 by ukbd(4) (which also does AT keyboard emulation), f.e.:
851 Option "XkbLayout" "us"
852 Option "XkbRules" "xorg"
853 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
856 It has been decided that it is desirable to provide ABI
857 backwards compatibility to the FreeBSD 4/5/6 versions of the
858 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
859 broken with the introduction of PCI domain support (see the
860 20070930 entry). Unfortunately, this required the ABI of
861 PCIOCGETCONF to be broken again in order to be able to
862 provide backwards compatibility to the old version of that
863 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
864 again. As for prominent ports this affects neither pciutils
865 nor xorg-server this time, the hal port needs to be rebuilt
869 The misnamed kthread_create() and friends have been renamed
870 to kproc_create() etc. Many of the callers already
872 I will return kthread_create() and friends in a while
873 with implementations that actually create threads, not procs.
874 Renaming corresponds with version 800002.
880 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
881 WITHOUT_LIBTHR are set.
884 The PCI code has been made aware of PCI domains. This means that
885 the location strings as used by pciconf(8) etc are now in the
886 following format: pci<domain>:<bus>:<device>[:<function>]. It
887 also means that consumers of <sys/pciio.h> potentially need to
888 be recompiled; this includes the hal and xorg-server ports.
891 The caching daemon (cached) was renamed to nscd. nscd.conf
892 configuration file should be used instead of cached.conf and
893 nscd_enable, nscd_pidfile and nscd_flags options should be used
894 instead of cached_enable, cached_pidfile and cached_flags in
898 The getfacl(1) utility now prints owning user and group name
899 instead of owning uid and gid in the three line comment header.
900 This is the same behavior as getfacl(1) on Solaris and Linux.
903 The new IPsec code is now compiled in using the IPSEC option. The
904 IPSEC option now requires "device crypto" be defined in your kernel
905 configuration. The FAST_IPSEC kernel option is now deprecated.
908 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
909 note the changed syntax - keep state is now on by default. Also
910 note the fact that ftp-proxy(8) has been changed from bottom up and
911 has been moved from libexec to usr/sbin. Changes in the ALTQ
912 handling also affect users of IPFW's ALTQ capabilities.
915 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
916 only IPsec supported by FreeBSD. The new IPsec stack
917 supports both IPv4 and IPv6. The kernel option will change
918 after the code changes have settled in. For now the kernel
919 option IPSEC is deprecated and FAST_IPSEC is the only option, that
920 will change after some settling time.
923 The wicontrol(8) utility has been removed from the base system. wi(4)
924 cards should be configured using ifconfig(8), see the man page for more
928 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
929 instead of the nve(4) driver. Please update your configuration
933 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
934 database if it is missing or older than the aliases file. If
935 desired, set the new rc.conf option sendmail_rebuild_aliases
936 to "YES" to restore that functionality.
939 The IPv4 multicast socket code has been considerably modified, and
940 moved to the file sys/netinet/in_mcast.c. Initial support for the
941 RFC 3678 Source-Specific Multicast Socket API has been added to
942 the IPv4 network stack.
944 Strict multicast and broadcast reception is now the default for
945 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
946 has now been removed.
948 The RFC 1724 hack for interface selection has been removed; the use
949 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
950 been added to replace it. Consumers such as routed will soon be
951 updated to reflect this.
953 These changes affect users who are running routed(8) or rdisc(8)
954 from the FreeBSD base system on point-to-point or unnumbered
958 The net80211 layer has changed significantly and all wireless
959 drivers that depend on it need to be recompiled. Further these
960 changes require that any program that interacts with the wireless
961 support in the kernel be recompiled; this includes: ifconfig,
962 wpa_supplicant, hostapd, and wlanstats. Users must also, for
963 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
964 if they use modules for wireless support. These modules implement
965 scanning support for station and ap modes, respectively. Failure
966 to load the appropriate module before marking a wireless interface
967 up will result in a message to the console and the device not
971 The pam_nologin(8) module ceases to provide an authentication
972 function and starts providing an account management function.
973 Consequent changes to /etc/pam.d should be brought in using
974 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
975 need manual editing as follows. Locate this line (or similar):
977 auth required pam_nologin.so no_warn
979 and change it according to this example:
981 account required pam_nologin.so no_warn
983 That is, the first word needs to be changed from "auth" to
984 "account". The new line can be moved to the account section
985 within the file for clarity. Not updating pam.conf(5) files
986 will result in nologin(5) ignored by the respective services.
989 The ether_ioctl() function has been synchronized with ioctl(2)
990 and ifnet.if_ioctl. Due to that, the size of one of its arguments
991 has changed on 64-bit architectures. All kernel modules using
992 ether_ioctl() need to be rebuilt on such architectures.
995 Improved INCLUDE_CONFIG_FILE support has been introduced to the
996 config(8) utility. In order to take advantage of this new
997 functionality, you are expected to recompile and install
998 src/usr.sbin/config. If you don't rebuild config(8), and your
999 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
1000 build will be broken because of a missing "kernconfstring"
1004 Symbol versioning is enabled by default. To disable it, use
1005 option WITHOUT_SYMVER. It is not advisable to attempt to
1006 disable symbol versioning once it is enabled; your installworld
1007 will break because a symbol version-less libc will get installed
1008 before the install tools. As a result, the old install tools,
1009 which previously had symbol dependencies to FBSD_1.0, will fail
1010 because the freshly installed libc will not have them.
1012 The default threading library (providing "libpthread") has been
1013 changed to libthr. If you wish to have libkse as your default,
1014 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
1017 The ABI breakage in sendmail(8)'s libmilter has been repaired
1018 so it is no longer necessary to recompile mail filters (aka,
1019 milters). If you recompiled mail filters after the 20070408
1020 note, it is not necessary to recompile them again.
1023 The new trunk(4) driver has been renamed to lagg(4) as it better
1024 reflects its purpose. ifconfig will need to be recompiled.
1027 sendmail(8) has been updated to version 8.14.1. Mail filters
1028 (aka, milters) compiled against the libmilter included in the
1029 base operating system should be recompiled.
1032 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
1033 In order to use them one must agree to the respective LICENSE in
1034 share/doc/legal and define legal.intel_<name>.license_ack=1 via
1035 loader.conf(5) or kenv(1). Make sure to deinstall the now
1036 deprecated modules from the respective firmware ports.
1039 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
1040 were removed from FreeBSD's libc. These originally came from INRIA
1041 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
1042 deprecated in previous releases.
1043 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
1044 replace it as a more portable (and re-entrant) API.
1047 To support interrupt filtering a modification to the newbus API
1048 has occurred, ABI was broken and __FreeBSD_version was bumped
1049 to 700031. Please make sure that your kernel and modules are in
1050 sync. For more info:
1051 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
1054 The IPv6 multicast forwarding code may now be loaded into GENERIC
1055 kernels by loading the ip_mroute.ko module. This is built into the
1056 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
1057 set; see src.conf(5) for more information.
1060 The output of netstat -r has changed. Without -n, we now only
1061 print a "network name" without the prefix length if the network
1062 address and mask exactly match a Class A/B/C network, and an entry
1063 exists in the nsswitch "networks" map.
1064 With -n, we print the full unabbreviated CIDR network prefix in
1065 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
1066 This change is in preparation for changes such as equal-cost
1067 multipath, and to more generally assist operational deployment
1068 of FreeBSD as a modern IPv4 router.
1071 PIM has been turned on by default in the IPv4 multicast
1072 routing code. The kernel option 'PIM' has now been removed.
1073 PIM is now built by default if option 'MROUTING' is specified.
1074 It may now be loaded into GENERIC kernels by loading the
1075 ip_mroute.ko module.
1078 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
1079 has been removed. Its functionality may be achieved by explicitly
1080 configuring gif(4) interfaces and using the 'phyint' keyword in
1082 XORP does not support source-routed IPv4 multicast tunnels nor the
1083 integrated IPIP tunneling, therefore it is not affected by this
1084 change. The __FreeBSD_version macro has been bumped to 700030.
1087 Support for PCI Message Signalled Interrupts has been
1088 re-enabled in the bge driver, only for those chips which are
1089 believed to support it properly. If there are any problems,
1090 MSI can be disabled completely by setting the
1091 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
1095 Support for PCI Message Signalled Interrupts has been
1096 disabled again in the bge driver. Many revisions of the
1097 hardware fail to support it properly. Support can be
1098 re-enabled by removing the #define of BGE_DISABLE_MSI in
1099 "src/sys/dev/bge/if_bge.c".
1102 Support for PCI Message Signalled Interrupts has been added
1103 to the bge driver. If there are any problems, MSI can be
1104 disabled completely by setting the 'hw.pci.enable_msi' and
1105 'hw.pci.enable_msix' tunables to 0 in the loader.
1108 The removal of several facets of the experimental Threading
1109 system from the kernel means that the proc and thread structures
1110 have changed quite a bit. I suggest all kernel modules that might
1111 reference these structures be recompiled.. Especially the
1115 Sound infrastructure has been updated with various fixes and
1116 improvements. Most of the changes are pretty much transparent,
1117 with exceptions of followings:
1118 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1119 moved to their own dev sysctl nodes, for example:
1120 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1121 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1122 own chardev in the form of "dsp%d.<function>%d", where <function>
1123 is p = playback, r = record and v = virtual, respectively. Users
1124 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1125 This does not affect those who are using "/dev/dsp".
1128 geom(4)'s gmirror(8) class metadata structure has been
1129 rev'd from v3 to v4. If you update across this point and
1130 your metadata is converted for you, you will not be easily
1131 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1132 kernel module will be unable to read the v4 metadata. You
1133 can resolve this by doing from the loader(8) prompt:
1135 set vfs.root.mountfrom="ufs:/dev/XXX"
1137 where XXX is the root slice of one of the disks that composed
1138 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1139 the array the same way you built it originally.
1142 The following binaries have been disconnected from the build:
1143 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1144 and mount_std. The functionality of these programs has been
1145 moved into the mount program. For example, to mount a devfs
1146 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1147 This does not affect entries in /etc/fstab, since entries in
1148 /etc/fstab are always processed with "mount -t fstype".
1151 Support for PCI Message Signalled Interrupts on i386 and amd64
1152 has been added to the kernel and various drivers will soon be
1153 updated to use MSI when it is available. If there are any problems,
1154 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1155 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1158 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1159 The lockmgr object layout has been changed as a result of having
1160 a lock_object embedded in it. As a consequence all file system
1161 kernel modules must be re-compiled. The mutex profiling man page
1162 has not yet been updated to reflect this change.
1165 KSE in the kernel has now been made optional and turned on by
1166 default. Use 'nooption KSE' in your kernel config to turn it
1167 off. All kernel modules *must* be recompiled after this change.
1168 There-after, modules from a KSE kernel should be compatible with
1169 modules from a NOKSE kernel due to the temporary padding fields
1170 added to 'struct proc'.
1173 mrouted and its utilities have been removed from the base system.
1176 Some ioctl(2) command codes have changed. Full backward ABI
1177 compatibility is provided if the "options COMPAT_FREEBSD6" is
1178 present in the kernel configuration file. Make sure to add
1179 this option to your kernel config file, or recompile X.Org
1180 and the rest of ports; otherwise they may refuse to work.
1183 tcpslice has been removed from the base system.
1186 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1187 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1188 systat needs to be rebuilt.
1191 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1194 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1195 for IPFIREWALL_FORWARD is now as it was before when it was first
1196 committed and for years after. The behaviour is now ON.
1199 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1200 Now it can decrypt files created from different architectures.
1201 Unfortunately, it is no longer able to decrypt a cipher text
1202 generated with an older version on 64 bit architectures.
1203 If you have such a file, you need old utility to decrypt it.
1206 The interface version of the i4b kernel part has changed. So
1207 after updating the kernel sources and compiling a new kernel,
1208 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1209 be rebuilt, and vice versa.
1212 The XBOX kernel now defaults to the nfe(4) driver instead of
1213 the nve(4) driver. Please update your configuration
1217 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1218 PCnet family of NICs has been removed. The new le(4) driver serves
1219 as an equivalent but cross-platform replacement with the pcn(4)
1220 driver still providing performance-optimized support for the subset
1221 of AMD Am79C971 PCnet-FAST and greater chips as before.
1224 The machdep.* sysctls and the adjkerntz utility have been
1225 modified a bit. The new adjkerntz utility uses the new
1226 sysctl names and sysctlbyname() calls, so it may be impossible
1227 to run an old /sbin/adjkerntz utility in single-user mode
1228 with a new kernel. Replace the `adjkerntz -i' step before
1229 `make installworld' with:
1231 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1233 and proceed as usual with the rest of the installworld-stage
1234 steps. Otherwise, you risk installing binaries with their
1235 timestamp set several hours in the future, especially if
1236 you are running with local time set to GMT+X hours.
1239 The ip6fw utility has been removed. The behavior provided by
1240 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1241 have been updated to deal with it. There are some rules that
1242 might not migrate cleanly. Use rc.firewall6 as a template to
1246 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1247 attachments have been removed. Make sure to configure scc(4)
1248 on sparc64. Note also that by default puc(4) will use uart(4)
1249 and not sio(4) for serial ports because interrupt handling has
1250 been optimized for multi-port serial cards and only uart(4)
1251 implements the interface to support it.
1254 The scc(4) driver replaces puc(4) for Serial Communications
1255 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1256 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1257 configuration to make sure that the serial ports remain
1261 Most world/kernel related NO_* build options changed names.
1262 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1263 after FreeBSD ports) and should be set in /etc/src.conf
1264 (the src.conf(5) manpage is provided). Full backwards
1265 compatibility is maintained for the time being though it's
1266 highly recommended to start moving old options out of the
1267 system-wide /etc/make.conf file into the new /etc/src.conf
1268 while also properly renaming them. More conversions will
1269 likely follow. Posting to current@:
1271 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1274 The NETSMBCRYPTO kernel option has been retired because its
1275 functionality is always included in NETSMB and smbfs.ko now.
1278 The TDFX_LINUX kernel option was retired and replaced by the
1279 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1280 kernel module. Loading it alone should suffice to get 3dfx support
1281 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1285 The 'audit' group was added to support the new auditing functionality
1286 in the base system. Be sure to follow the directions for updating,
1287 including the requirement to run mergemaster -p.
1290 The kernel ABI to file system modules was changed on i386.
1291 Please make sure that your kernel and modules are in sync.
1294 This actually occured some time ago, but installing the kernel
1295 now also installs a bunch of symbol files for the kernel modules.
1296 This increases the size of /boot/kernel to about 67Mbytes. You
1297 will need twice this if you will eventually back this up to kernel.old
1298 on your next install.
1299 If you have a shortage of room in your root partition, you should add
1300 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1301 to your /etc/make.conf.
1304 libc's malloc implementation has been replaced. This change has the
1305 potential to uncover application bugs that previously went unnoticed.
1306 See the malloc(3) manual page for more details.
1309 The generic netgraph(4) cookie has been changed. If you upgrade
1310 kernel passing this point, you also need to upgrade userland
1311 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1314 si(4)'s device files now contain the unit number.
1315 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1318 The kernel ABI was mostly destroyed due to a change in the size
1319 of struct lock_object which is nested in other structures such
1320 as mutexes which are nested in all sorts of other structures.
1321 Make sure your kernel and modules are in sync.
1324 The page coloring algorithm in the VM subsystem was converted
1325 from tuning with kernel options to autotuning. Please remove
1326 any PQ_* option except PQ_NOOPT from your kernel config.
1329 The net80211-related tools in the tools/tools/ath directory
1330 have been moved to tools/tools/net80211 and renamed with a
1331 "wlan" prefix. Scripts that use them should be adjusted
1335 Scripts in the local_startup directories (as defined in
1336 /etc/defaults/rc.conf) that have the new rc.d semantics will
1337 now be run as part of the base system rcorder. If there are
1338 errors or problems with one of these local scripts, it could
1339 cause boot problems. If you encounter such problems, boot in
1340 single user mode, remove that script from the */rc.d directory.
1341 Please report the problem to the port's maintainer, and the
1342 freebsd-ports@freebsd.org mailing list.
1345 The nodev mount option was deprecated in RELENG_6 (where it
1346 was a no-op), and is now unsupported. If you have nodev or dev listed
1347 in /etc/fstab, remove it, otherwise it will result in a mount error.
1350 ABI between ipfw(4) and ipfw(8) has been changed. You need
1351 to rebuild ipfw(8) when rebuilding kernel.
1354 rp(4)'s device files now contain the unit number.
1355 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1358 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1359 Its /etc/rc.conf.d configuration file has been `ppp' from
1360 the beginning, and hence there is no need to touch it.
1363 Now most modules get their build-time options from the kernel
1364 configuration file. A few modules still have fixed options
1365 due to their non-conformant implementation, but they will be
1366 corrected eventually. You may need to review the options of
1367 the modules in use, explicitly specify the non-default options
1368 in the kernel configuration file, and rebuild the kernel and
1372 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1373 to turn polling(4) on your interfaces.
1376 The old bridge(4) implementation was retired. The new
1377 if_bridge(4) serves as a full functional replacement.
1380 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1381 to conform to POSIX-2001. This change broke an ABI
1382 compatibility on 64 bit architecture. You have to recompile
1383 userland programs that use getaddrinfo(3) on 64 bit
1387 RELENG_6 branched here.
1390 The pccard_ifconfig rc.conf variable has been removed and a new
1391 variable, ifconfig_DEFAULT has been introduced. Unlike
1392 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1393 do not have ifconfig_ifn entries rather than just those in
1394 removable_interfaces.
1397 Some previous versions of PAM have permitted the use of
1398 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1399 to third party PAM modules in /usr/local/lib. A change has been
1400 made to require the use of absolute paths in order to avoid
1401 ambiguity and dependence on library path configuration, which may
1402 affect existing configurations.
1405 Major changes to network interface API. All drivers must be
1406 recompiled. Drivers not in the base system will need to be
1407 updated to the new APIs.
1410 Changes were made to kinfo_proc in sys/user.h. Please recompile
1411 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1412 will not behave correctly.
1414 The API and ABI for hwpmc(4) have changed with the addition
1415 of sampling support. Please recompile lib/libpmc(3) and
1416 usr.sbin/{pmcstat,pmccontrol}.
1419 The OpenBSD dhclient was imported in place of the ISC dhclient
1420 and the network interface configuration scripts were updated
1421 accordingly. If you use DHCP to configure your interfaces, you
1422 must now run devd. Also, DNS updating was lost so you will need
1423 to find a workaround if you use this feature.
1425 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1426 sure to run mergemaster -p (like you are supposed to do every time
1430 if_bridge was added to the tree. This has changed struct ifnet.
1431 Please recompile userland and all network related modules.
1434 The n_net of a struct netent was changed to an uint32_t, and
1435 1st argument of getnetbyaddr() was changed to an uint32_t, to
1436 conform to POSIX-2001. These changes broke an ABI
1437 compatibility on 64 bit architecture. With these changes,
1438 shlib major of libpcap was bumped. You have to recompile
1439 userland programs that use getnetbyaddr(3), getnetbyname(3),
1440 getnetent(3) and/or libpcap on 64 bit architecture.
1443 Kernel parsing of extra options on '#!' first lines of shell
1444 scripts has changed. Lines with multiple options likely will
1445 fail after this date. For full details, please see
1446 http://people.freebsd.org/~gad/Updating-20050528.txt
1449 The packet filter (pf) code has been updated to OpenBSD 3.7
1450 Please note the changed anchor syntax and the fact that
1451 authpf(8) now needs a mounted fdescfs(5) to function.
1454 The NO_MIXED_MODE kernel option has been removed from the i386
1455 amd64 platforms as its use has been superceded by the new local
1456 APIC timer code. Any kernel config files containing this option
1460 The on-disk format of LC_CTYPE files was changed to be machine
1461 independent. Please make sure NOT to use NO_CLEAN buildworld
1462 when crossing this point. Crossing this point also requires
1463 recompile or reinstall of all locale depended packages.
1466 The ifi_epoch member of struct if_data has been changed to
1467 contain the uptime at which the interface was created or the
1468 statistics zeroed rather then the wall clock time because
1469 wallclock time may go backwards. This should have no impact
1470 unless an snmp implementation is using this value (I know of
1471 none at this point.)
1474 The acpi_perf and acpi_throttle drivers are now part of the
1475 acpi(4) main module. They are no longer built separately.
1478 The layout of struct image_params has changed. You have to
1479 recompile all compatibility modules (linux, svr4, etc) for use
1480 with the new kernel.
1483 The p4tcc driver has been merged into cpufreq(4). This makes
1484 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1485 compile in "device cpufreq" to restore this functionality.
1488 The responsibility of recomputing the file system summary of
1489 a SoftUpdates-enabled dirty volume has been transferred to the
1490 background fsck. A rebuild of fsck(8) utility is recommended
1491 if you have updated the kernel.
1493 To get the old behavior (recompute file system summary at mount
1494 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1495 mounting the new volume.
1498 The cpufreq import is complete. As part of this, the sysctls for
1499 acpi(4) throttling have been removed. The power_profile script
1500 has been updated, so you can use performance/economy_cpu_freq in
1501 rc.conf(5) to set AC on/offline cpu frequencies.
1504 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1505 requires recompiling libnetgraph and userland netgraph utilities.
1508 Support for abbreviated forms of a number of ipfw options is
1509 now deprecated. Warnings are printed to stderr indicating the
1510 correct full form when a match occurs. Some abbreviations may
1511 be supported at a later date based on user feedback. To be
1512 considered for support, abbreviations must be in use prior to
1513 this commit and unlikely to be confused with current key words.
1516 By a popular demand, a lot of NOFOO options were renamed
1517 to NO_FOO (see bsd.compat.mk for a full list). The old
1518 spellings are still supported, but will cause annoying
1519 warnings on stderr. Make sure you upgrade properly (see
1520 the COMMON ITEMS: section later in this file).
1523 Auto-loading of ancillary wlan modules such as wlan_wep has
1524 been temporarily disabled; you need to statically configure
1525 the modules you need into your kernel or explicitly load them
1526 prior to use. Specifically, if you intend to use WEP encryption
1527 with an 802.11 device load/configure wlan_wep; if you want to
1528 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1529 and wlan_xauth as required.
1532 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1533 (``enable lqr''), older versions would revert to LCP ECHO mode on
1534 negotiation failure. Now, ``enable echo'' is required for this
1535 behaviour. The ppp version number has been bumped to 3.4.2 to
1539 The wlan support has been updated to split the crypto support
1540 into separate modules. For static WEP you must configure the
1541 wlan_wep module in your system or build and install the module
1542 in place where it can be loaded (the kernel will auto-load
1543 the module when a wep key is configured).
1546 The ath driver has been updated to split the tx rate control
1547 algorithm into a separate module. You need to include either
1548 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1551 Support for systems with an 80386 CPU has been removed. Please
1552 use FreeBSD 5.x or earlier on systems with an 80386.
1555 We have had a hack which would mount the root filesystem
1556 R/W if the device were named 'md*'. As part of the vnode
1557 work I'm doing I have had to remove this hack. People
1558 building systems which use preloaded MD root filesystems
1559 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1560 their /etc/rc scripts.
1563 FreeBSD 5.3 shipped here.
1566 The size of struct tcpcb has changed again due to the removal
1567 of RFC1644 T/TCP. You have to recompile userland programs that
1568 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1571 The size of struct tcpcb has changed. You have to recompile
1572 userland programs that read kmem for tcp sockets directly
1573 (netstat, sockstat, etc.)
1576 RELENG_5 branched here. For older entries, please see updating
1577 in the RELENG_5 branch.
1583 Avoid using make -j when upgrading. From time to time in the
1584 past there have been problems using -j with buildworld and/or
1585 installworld. This is especially true when upgrading between
1586 "distant" versions (eg one that cross a major release boundary
1587 or several minor releases, or when several months have passed
1588 on the -current branch).
1590 Sometimes, obscure build problems are the result of environment
1591 poisoning. This can happen because the make utility reads its
1592 environment when searching for values for global variables.
1593 To run your build attempts in an "environmental clean room",
1594 prefix all make commands with 'env -i '. See the env(1) manual
1595 page for more details.
1597 When upgrading from one major version to another it is generally
1598 best to upgrade to the latest code in the currently installed branch
1599 first, then do an upgrade to the new branch. This is the best-tested
1600 upgrade path, and has the highest probability of being successful.
1601 Please try this approach before reporting problems with a major
1606 If you are updating from a prior version of FreeBSD (even one just
1607 a few days old), you should follow this procedure. It is the most
1608 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1610 make kernel-toolchain
1611 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1612 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1614 To test a kernel once
1615 ---------------------
1616 If you just want to boot a kernel once (because you are not sure
1617 if it works, or if you want to boot a known bad kernel to provide
1618 debugging information) run
1619 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1620 nextboot -k testkernel
1622 To just build a kernel when you know that it won't mess you up
1623 --------------------------------------------------------------
1624 This assumes you are already running a 5.X system. Replace
1625 ${arch} with the architecture of your machine (e.g. "i386",
1626 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1628 cd src/sys/${arch}/conf
1629 config KERNEL_NAME_HERE
1630 cd ../compile/KERNEL_NAME_HERE
1635 If this fails, go to the "To build a kernel" section.
1637 To rebuild everything and install it on the current system.
1638 -----------------------------------------------------------
1639 # Note: sometimes if you are running current you gotta do more than
1640 # is listed here if you are upgrading from a really old current.
1642 <make sure you have good level 0 dumps>
1644 make kernel KERNCONF=YOUR_KERNEL_HERE
1646 <reboot in single user> [3]
1654 To cross-install current onto a separate partition
1655 --------------------------------------------------
1656 # In this approach we use a separate partition to hold
1657 # current's root, 'usr', and 'var' directories. A partition
1658 # holding "/", "/usr" and "/var" should be about 2GB in
1661 <make sure you have good level 0 dumps>
1664 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1665 <maybe newfs current's root partition>
1666 <mount current's root partition on directory ${CURRENT_ROOT}>
1667 make installworld DESTDIR=${CURRENT_ROOT}
1668 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1669 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1670 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1671 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1672 <reboot into current>
1673 <do a "native" rebuild/install as described in the previous section>
1674 <maybe install compatibility libraries from ports/misc/compat*>
1678 To upgrade in-place from 5.x-stable to current
1679 ----------------------------------------------
1680 <make sure you have good level 0 dumps>
1682 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1684 <reboot in single user> [3]
1691 Make sure that you've read the UPDATING file to understand the
1692 tweaks to various things you need. At this point in the life
1693 cycle of current, things change often and you are on your own
1694 to cope. The defaults can also change, so please read ALL of
1695 the UPDATING entries.
1697 Also, if you are tracking -current, you must be subscribed to
1698 freebsd-current@freebsd.org. Make sure that before you update
1699 your sources that you have read and understood all the recent
1700 messages there. If in doubt, please track -stable which has
1701 much fewer pitfalls.
1703 [1] If you have third party modules, such as vmware, you
1704 should disable them at this point so they don't crash your
1707 [3] From the bootblocks, boot -s, and then do
1712 adjkerntz -i # if CMOS is wall time
1713 Also, when doing a major release upgrade, it is required that
1714 you boot into single user mode to do the installworld.
1716 [4] Note: This step is non-optional. Failure to do this step
1717 can result in a significant reduction in the functionality of the
1718 system. Attempting to do it by hand is not recommended and those
1719 that pursue this avenue should read this file carefully, as well
1720 as the archives of freebsd-current and freebsd-hackers mailing lists
1721 for potential gotchas.
1723 [5] Usually this step is a noop. However, from time to time
1724 you may need to do this if you get unknown user in the following
1725 step. It never hurts to do it all the time. You may need to
1726 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1727 install) after the buildworld before this step if you last updated
1728 from current before 20020224 or from -stable before 20020408.
1730 [8] In order to have a kernel that can run the 4.x binaries
1731 needed to do an installworld, you must include the COMPAT_FREEBSD4
1732 option in your kernel. Failure to do so may leave you with a system
1733 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1734 is required to run the 5.x binaries on more recent kernels.
1736 Make sure that you merge any new devices from GENERIC since the
1737 last time you updated your kernel config file.
1739 [9] When checking out sources, you must include the -P flag to have
1740 cvs prune empty directories.
1742 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1743 "?=" instead of the "=" assignment operator, so that buildworld can
1744 override the CPUTYPE if it needs to.
1746 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1747 not on the command line, or in /etc/make.conf. buildworld will
1748 warn if it is improperly defined.
1751 This file contains a list, in reverse chronological order, of major
1752 breakages in tracking -current. Not all things will be listed here,
1753 and it only starts on October 16, 2004. Updating files can found in
1754 previous releases if your system is older than this.
1756 Copyright information:
1758 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1760 Redistribution, publication, translation and use, with or without
1761 modification, in full or in part, in any form or format of this
1762 document are permitted without further permission from the author.
1764 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1765 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1766 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1767 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1768 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1769 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1770 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1771 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1772 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1773 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1774 POSSIBILITY OF SUCH DAMAGE.
1776 If you find this document useful, and you want to, you may buy the
1779 Contact Warner Losh if you have any questions about your use of