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 20110420: p3 FreeBSD-SA-11:01.mountd
19 Fix CIDR parsing bug in mountd ACLs.
21 20101129: p2 FreeBSD-SA-10:10.openssl
22 Fix OpenSSL multiple vulnerabilities.
24 20100920: p1 FreeBSD-SA-10:08.bzip2
25 Fix an integer overflow in RLE length parsing when decompressing
31 20100713: FreeBSD-SA-10:07.mbuf
32 Correctly copy the M_RDONLY flag when duplicating a reference
33 to an mbuf external buffer.
36 The config(8) command has been updated to maintain compatibility
37 with config files from 8.0-RELEASE. You will need a new version
38 of config to build kernels (this version can be used from 8.0-RELEASE
39 forward). The buildworld target will generate it, so following
40 the instructions in this file for updating will work glitch-free.
41 Merely doing a make buildkernel without first doing a make buildworld
42 (or kernel-toolchain), or attempting to build a kernel using
43 traidtional methods will generate a config version warning, indicating
47 The rc.firewall and rc.firewall6 were unified, and
48 rc.firewall6 and rc.d/ip6fw were removed.
49 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
50 variables are obsoleted. Instead, the following new rc
51 variables are added to rc.d/ipfw:
53 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
54 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
55 firewall_simple_onet_ipv6
57 The meanings correspond to the relevant IPv4 variables.
60 COMPAT_IA32 has been added as an alias for COMPAT_FREEBSD32. A new
61 version of config(8) is required. The error message when you hit this
62 condition is confusing (COMPAT_FREEBSD32 duplicate option), when it
63 should really say "your config is too old to compile this new kernel."
66 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
67 to allow 32-bit compatibility on non-x86 platforms. All kernel
68 configurations on amd64 and ia64 platforms using these options must
69 be modified accordingly.
72 Introduce the kernel thread "deadlock resolver" (which can be enabled
73 via the DEADLKRES option, see NOTES for more details) and the
74 sleepq_type() function for sleepqueues.
80 802.11s D3.03 support was committed. This is incompatible with
81 the previous code, which was based on D3.0.
84 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
85 mount(8) and -a option for df(1) to see them.
88 Remove the option STOP_NMI. The default action is now to use NMI
89 only for KDB via the newly introduced function stop_cpus_hard()
90 and maintain stop_cpus() to just use a normal IPI_STOP on ia32
97 Bump the shared library version numbers for all libraries that
98 do not use symbol versioning as part of the 8.0-RELEASE cycle.
99 Bump __FreeBSD_version to 800105.
102 Due to changes in the implementation of virtual network stack
103 support, all network-related kernel modules must be recompiled.
104 As this change breaks the ABI, bump __FreeBSD_version to 800104.
107 The TOE interface to the TCP syncache has been modified to remove struct
108 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
109 cxgb driver is the only TOE consumer affected by this change, and needs
110 to be recompiled along with the kernel. As this change breaks the ABI,
111 bump __FreeBSD_version to 800103.
114 Padding has been added to struct tcpcb, sackhint and tcpstat in
115 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
116 maintainig the ABI. However, this change breaks the ABI, so bump
117 __FreeBSD_version to 800102. User space tools that rely on the size of
118 any of these structs (e.g. sockstat) need to be recompiled.
121 The NFS_LEGACYRPC option has been removed along with the old
122 kernel RPC implementation that this option selected. Kernel
123 configurations may need to be adjusted.
126 The network interface device nodes at /dev/net/<interface> have
127 been removed. All ioctl operations can be performed the normal
128 way using routing sockets. The kqueue functionality can
129 generally be replaced with routing sockets.
132 The documentation from the FreeBSD Documentation Project
133 (Handbook, FAQ, etc.) is now installed via packages by
134 sysinstall(8) and under the /usr/local/share/doc/freebsd
135 directory instead of /usr/share/doc.
138 The ABI of various structures related to the SYSV IPC API have
139 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
140 kernel options now all require COMPAT_FREEBSD7.
141 Bump __FreeBSD_version to 800100.
144 Layout of struct vnet has changed as routing related variables
145 were moved to their own Vimage module. Modules need to be
146 recompiled. Bump __FreeBSD_version to 800099.
149 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
150 and 1024 respectively. As long as no more than 16 groups per
151 process are used, no changes should be visible. When more
152 than 16 groups are used, old binaries may fail if they call
153 getgroups() or getgrouplist() with statically sized storage.
154 Recompiling will work around this, but applications should be
155 modified to use dynamically allocated storage for group arrays
156 as POSIX.1-2008 does not cap an implementation's number of
157 supported groups at NGROUPS_MAX+1 as previous versions did.
159 NFS and portalfs mounts may also be affected as the list of
160 groups is truncated to 16. Users of NFS who use more than 16
161 groups, should take care that negative group permissions are not
162 used on the exported file systems as they will not be reliable
163 unless a GSSAPI based authentication method is used.
166 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
167 This option compiles in the support for adaptive spinning for lockmgrs
168 which want to enable it. The lockinit() function now accepts the
169 flag LK_ADAPTIVE in order to make the lock object subject to
170 adaptive spinning when both held in write and read mode.
173 The layout of the structure returned by IEEE80211_IOC_STA_INFO
174 has changed. User applications that use this ioctl need to be
178 The layout of struct thread has changed. Kernel and modules
182 The layout of structs ifnet, domain, protosw and vnet_net has
183 changed. Kernel modules need to be rebuilt.
184 Bump __FreeBSD_version to 800097.
187 window(1) has been removed from the base system. It can now be
188 installed from ports. The port is called misc/window.
191 The way we are storing and accessing `routing table' entries
192 has changed. Programs reading the FIB, like netstat, need to
196 A new netisr implementation has been added for FreeBSD 8. Network
197 file system modules, such as igmp, ipdivert, and others, should be
199 Bump __FreeBSD_version to 800096.
202 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
206 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
207 Bump __FreeBSD_version to 800094.
210 Add mnt_xflag field to 'struct mount'. File system modules
212 Bump __FreeBSD_version to 800093.
215 The compiling option ADAPTIVE_SX has been retired while it has been
216 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
217 The KPI for sx_init_flags() changes as accepting flags:
218 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
219 has been introduced in order to handle the reversed logic.
220 Bump __FreeBSD_version to 800092.
223 Add support for hierarchical jails. Remove global securelevel.
224 Bump __FreeBSD_version to 800091.
227 The layout of struct vnet_net has changed, therefore modules
229 Bump __FreeBSD_version to 800090.
232 The newly imported zic(8) produces a new format in the
233 output. Please run tzsetup(8) to install the newly created
234 data to /etc/localtime.
237 The sysctl tree for the usb stack has renamed from hw.usb2.* to
238 hw.usb.* and is now consistent again with previous releases.
241 802.11 monitor mode support was revised and driver api's
242 were changed. Drivers dependent on net80211 now support
243 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
244 user-visible data structures were changed but applications
245 that use DLT_IEEE802_11 may require changes.
246 Bump __FreeBSD_version to 800088.
249 The layout of the following structs has changed: sysctl_oid,
250 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
251 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
252 panics may be experienced. World rebuild is required for
253 correctly checking networking state from userland.
254 Bump __FreeBSD_version to 800085.
257 MLDv2 and Source-Specific Multicast (SSM) have been merged
258 to the IPv6 stack. VIMAGE hooks are in but not yet used.
259 The implementation of SSM within FreeBSD's IPv6 stack closely
260 follows the IPv4 implementation.
262 For kernel developers:
264 * The most important changes are that the ip6_output() and
265 ip6_input() paths no longer take the IN6_MULTI_LOCK,
266 and this lock has been downgraded to a non-recursive mutex.
268 * As with the changes to the IPv4 stack to support SSM, filtering
269 of inbound multicast traffic must now be performed by transport
270 protocols within the IPv6 stack. This does not apply to TCP and
271 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
273 * The KPIs used by IPv6 multicast are similar to those used by
274 the IPv4 stack, with the following differences:
275 * im6o_mc_filter() is analogous to imo_multicast_filter().
276 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
277 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
278 * IN6_LOOKUP_MULTI() has been deprecated and removed.
279 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
280 for MLDv1 have an additional 'timer' argument which is used to
281 jitter the initial membership report for the solicited-node
282 multicast membership on-link.
283 * This is not strictly needed for MLDv2, which already jitters
284 its report transmissions. However, the 'timer' argument is
285 preserved in case MLDv1 is active on the interface.
287 * The KAME linked-list based IPv6 membership implementation has
288 been refactored to use a vector similar to that used by the IPv4
290 Code which maintains a list of its own multicast memberships
291 internally, e.g. carp, has been updated to reflect the new
294 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
295 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
296 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
297 implementation constraint which needs to be addressed in HEAD.
299 For application developers:
301 * The changes are broadly similar to those made for the IPv4
304 * The use of IPv4 and IPv6 multicast socket options on the same
305 socket, using mapped addresses, HAS NOT been tested or supported.
307 * There are a number of issues with the implementation of various
308 IPv6 multicast APIs which need to be resolved in the API surface
309 before the implementation is fully compatible with KAME userland
310 use, and these are mostly to do with interface index treatment.
312 * The literature available discusses the use of either the delta / ASM
313 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
314 using setsourcefilter(3)/getsourcefilter(3). For more information
315 please refer to RFC 3768, 'Socket Interface Extensions for
316 Multicast Source Filters'.
318 * Applications which use the published RFC 3678 APIs should be fine.
320 For systems administrators:
322 * The mtest(8) utility has been refactored to support IPv6, in
323 addition to IPv4. Interface addresses are no longer accepted
324 as arguments, their names must be used instead. The utility
325 will map the interface name to its first IPv4 address as
326 returned by getifaddrs(3).
328 * The ifmcstat(8) utility has also been updated to print the MLDv2
329 endpoint state and source filter lists via sysctl(3).
331 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
332 loopback of IPv6 multicast datagrams by default; it defaults to 1
333 to preserve the existing behaviour. Disabling multicast loopback is
334 recommended for optimal system performance.
336 * The IPv6 MROUTING code has been changed to examine this sysctl
337 instead of attempting to perform a group lookup before looping
338 back forwarded datagrams.
340 Bump __FreeBSD_version to 800084.
343 Implement low-level Bluetooth HCI API.
344 Bump __FreeBSD_version to 800083.
347 The layout of struct malloc_type, used by modules to register new
348 memory allocation types, has changed. Most modules will need to
349 be rebuilt or panics may be experienced.
350 Bump __FreeBSD_version to 800081.
353 Anticipate overflowing inp_flags - add inp_flags2.
354 This changes most offsets in inpcb, so checking v4 connection
355 state will require a world rebuild.
356 Bump __FreeBSD_version to 800080.
359 Add an llentry to struct route and struct route_in6. Modules
360 embedding a struct route will need to be recompiled.
361 Bump __FreeBSD_version to 800079.
364 The size of rt_metrics_lite and by extension rtentry has changed.
365 Networking administration apps will need to be recompiled.
366 The route command now supports show as an alias for get, weighting
367 of routes, sticky and nostick flags to alter the behavior of stateful
369 Bump __FreeBSD_version to 800078.
372 Do not use Giant for kbdmux(4) locking. This is wrong and
373 apparently causing more problems than it solves. This will
374 re-open the issue where interrupt handlers may race with
375 kbdmux(4) in polling mode. Typical symptoms include (but
376 not limited to) duplicated and/or missing characters when
377 low level console functions (such as gets) are used while
378 interrupts are enabled (for example geli password prompt,
379 mountroot prompt etc.). Disabling kbdmux(4) may help.
382 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
383 kernel modules referencing any of the above need to be recompiled.
384 Bump __FreeBSD_version to 800075.
387 GEOM_PART has become the default partition slicer for storage devices,
388 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
389 introduces some changes:
391 MSDOS/EBR: the devices created from MSDOS extended partition entries
392 (EBR) can be named differently than with GEOM_MBR and are now symlinks
393 to devices with offset-based names. fstabs may need to be modified.
395 BSD: the "geometry does not match label" warning is harmless in most
396 cases but it points to problems in file system misalignment with
397 disk geometry. The "c" partition is now implicit, covers the whole
398 top-level drive and cannot be (mis)used by users.
400 General: Kernel dumps are now not allowed to be written to devices
401 whose partition types indicate they are meant to be used for file
402 systems (or, in case of MSDOS partitions, as something else than
405 Most of these changes date approximately from 200812.
408 The uscanner(4) driver has been removed from the kernel. This follows
409 Linux removing theirs in 2.6 and making libusb the default interface
413 The multicast forwarding code has been cleaned up. netstat(1)
414 only relies on KVM now for printing bandwidth upcall meters.
415 The IPv4 and IPv6 modules are split into ip_mroute_mod and
416 ip6_mroute_mod respectively. The config(5) options for statically
417 compiling this code remain the same, i.e. 'options MROUTING'.
420 Support for the IFF_NEEDSGIANT network interface flag has been
421 removed, which means that non-MPSAFE network device drivers are no
422 longer supported. In particular, if_ar, if_sr, and network device
423 drivers from the old (legacy) USB stack can no longer be built or
427 POSIX.1 Native Language Support (NLS) has been enabled in libc and
428 a bunch of new language catalog files have also been added.
429 This means that some common libc messages are now localized and
430 they depend on the LC_MESSAGES environmental variable.
433 The k8temp(4) driver has been renamed to amdtemp(4) since
434 support for K10 and K11 CPU families was added.
437 IGMPv3 and Source-Specific Multicast (SSM) have been merged
438 to the IPv4 stack. VIMAGE hooks are in but not yet used.
440 For kernel developers, the most important changes are that the
441 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
442 and this lock has been downgraded to a non-recursive mutex.
444 Transport protocols (UDP, Raw IP) are now responsible for filtering
445 inbound multicast traffic according to group membership and source
446 filters. The imo_multicast_filter() KPI exists for this purpose.
447 Transports which do not use multicast (SCTP, TCP) already reject
448 multicast by default. Forwarding and receive performance may improve
449 as a mutex acquisition is no longer needed in the ip_input()
450 low-level input path. in_addmulti() and in_delmulti() are shimmed
451 to new KPIs which exist to support SSM in-kernel.
453 For application developers, it is recommended that loopback of
454 multicast datagrams be disabled for best performance, as this
455 will still cause the lock to be taken for each looped-back
456 datagram transmission. The net.inet.ip.mcast.loop sysctl may
457 be tuned to 0 to disable loopback by default; it defaults to 1
458 to preserve the existing behaviour.
460 For systems administrators, to obtain best performance with
461 multicast reception and multiple groups, it is always recommended
462 that a card with a suitably precise hash filter is used. Hash
463 collisions will still result in the lock being taken within the
464 transport protocol input path to check group membership.
466 If deploying FreeBSD in an environment with IGMP snooping switches,
467 it is recommended that the net.inet.igmp.sendlocal sysctl remain
468 enabled; this forces 224.0.0.0/24 group membership to be announced
471 The size of 'struct igmpstat' has changed; netstat needs to be
472 recompiled to reflect this.
473 Bump __FreeBSD_version to 800070.
476 libusb20.so.1 is now installed as libusb.so.1 and the ports system
477 updated to use it. This requires a buildworld/installworld in order to
478 update the library and dependencies (usbconfig, etc). Its advisable to
479 rebuild all ports which uses libusb. More specific directions are given
480 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
481 libusb are no longer required and can be removed.
484 A workaround is committed to allow the creation of System V shared
485 memory segment of size > 2 GB on the 64-bit architectures.
486 Due to a limitation of the existing ABI, the shm_segsz member
487 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
488 wrong for large segments. Note that limits must be explicitly
489 raised to allow such segments to be created.
492 The layout of struct ifnet has changed, requiring a rebuild of all
493 network device driver modules.
496 The /dev handling for the new USB stack has changed, a
497 buildworld/installworld is required for libusb20.
500 The new USB2 stack has now been permanently moved in and all kernel and
501 module names reverted to their previous values (eg, usb, ehci, ohci,
502 ums, ...). The old usb stack can be compiled in by prefixing the name
503 with the letter 'o', the old usb modules have been removed.
504 Updating entry 20090216 for xorg and 20090215 for libmap may still
508 The rc.conf(5) option if_up_delay has been renamed to
509 defaultroute_delay to better reflect its purpose. If you have
510 customized this setting in /etc/rc.conf you need to update it to
514 xorg 7.4 wants to configure its input devices via hald which does not
515 yet work with USB2. If the keyboard/mouse does not work in xorg then
517 Option "AllowEmptyInput" "off"
518 to your ServerLayout section. This will cause X to use the configured
519 kbd and mouse sections from your xorg.conf.
522 The GENERIC kernels for all architectures now default to the new USB2
523 stack. No kernel config options or code have been removed so if a
524 problem arises please report it and optionally revert to the old USB
525 stack. If you are loading USB kernel modules or have a custom kernel
526 that includes GENERIC then ensure that usb names are also changed over,
527 eg uftdi -> usb2_serial_ftdi.
529 Older programs linked against the ports libusb 0.1 need to be
530 redirected to the new stack's libusb20. /etc/libmap.conf can
532 # Map old usb library to new one for usb2 stack
533 libusb-0.1.so.8 libusb20.so.1
536 All USB ethernet devices now attach as interfaces under the name ueN
537 (eg. ue0). This is to provide a predictable name as vendors often
538 change usb chipsets in a product without notice.
541 The ichsmb(4) driver has been changed to require SMBus slave
542 addresses be left-justified (xxxxxxx0b) rather than right-justified.
543 All of the other SMBus controller drivers require left-justified
544 slave addresses, so this change makes all the drivers provide the
548 INET6 statistics (struct ip6stat) was updated.
549 netstat(1) needs to be recompiled.
552 NTFS has been removed from GENERIC kernel on amd64 to match
553 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
554 will load ntfs.ko module automatically when NTFS support is
555 actually needed, unless ntfs.ko is not installed or security
556 level prohibits loading kernel modules. If either is the case,
557 "options NTFS" has to be added into kernel config.
560 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
561 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
562 800061. User space tools that rely on the size of struct tcpcb in
563 tcp_var.h (e.g. sockstat) need to be recompiled.
566 ng_tty(4) module updated to match the new TTY subsystem.
567 Due to API change, user-level applications must be updated.
568 New API support added to mpd5 CVS and expected to be present
569 in next mpd5.3 release.
572 With __FreeBSD_version 800060 the makefs tool is part of
573 the base system (it was a port).
576 The afdata and ifnet locks have been changed from mutexes to
577 rwlocks, network modules will need to be re-compiled.
580 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
581 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
582 The new code reduced struct rtentry{} by 16 bytes on 32-bit
583 architecture and 40 bytes on 64-bit architecture. The userland
584 applications "arp" and "ndp" have been updated accordingly.
585 The output from "netstat -r" shows only routing entries and
586 none of the L2 information.
589 __FreeBSD_version 800057 marks the switchover from the
590 binary ath hal to source code. Users must add the line:
592 options AH_SUPPORT_AR5416
594 to their kernel config files when specifying:
598 The ath_hal module no longer exists; the code is now compiled
599 together with the driver in the ath module. It is now
600 possible to tailor chip support (i.e. reduce the set of chips
601 and thereby the code size); consult ath_hal(4) for details.
604 __FreeBSD_version 800054 adds memory barriers to
605 <machine/atomic.h>, new interfaces to ifnet to facilitate
606 multiple hardware transmit queues for cards that support
607 them, and a lock-less ring-buffer implementation to
608 enable drivers to more efficiently manage queueing of
612 A new version of ZFS (version 13) has been merged to -HEAD.
613 This version has zpool attribute "listsnapshots" off by
614 default, which means "zfs list" does not show snapshots,
615 and is the same as Solaris behavior.
618 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
621 The uhci, ohci, ehci and slhci USB Host controller drivers have
622 been put into separate modules. If you load the usb module
623 separately through loader.conf you will need to load the
624 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
625 controller add the following to loader.conf:
631 The ABI used by the PMC toolset has changed. Please keep
632 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
636 atapci kernel module now includes only generic PCI ATA
637 driver. AHCI driver moved to ataahci kernel module.
638 All vendor-specific code moved into separate kernel modules:
639 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
640 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
641 atamarvell, atamicron, atanational, atanetcell, atanvidia,
642 atapromise, ataserverworks, atasiliconimage, atasis, atavia
645 The TTY subsystem of the kernel has been replaced by a new
646 implementation, which provides better scalability and an
647 improved driver model. Most common drivers have been migrated to
648 the new TTY subsystem, while others have not. The following
649 drivers have not yet been ported to the new TTY layer:
652 cy, digi, rc, rp, sio
658 ng_h4, ng_tty, ppp, sl, snp
660 Adding these drivers to your kernel configuration file shall
661 cause compilation to fail.
664 ntpd has been upgraded to 4.2.4p5.
667 OpenSSH has been upgraded to 5.1p1.
669 For many years, FreeBSD's version of OpenSSH preferred DSA
670 over RSA for host and user authentication keys. With this
671 upgrade, we've switched to the vendor's default of RSA over
672 DSA. This may cause upgraded clients to warn about unknown
673 host keys even for previously known hosts. Users should
674 follow the usual procedure for verifying host keys before
675 accepting the RSA key.
677 This can be circumvented by setting the "HostKeyAlgorithms"
678 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
681 Please note that the sequence of keys offered for
682 authentication has been changed as well. You may want to
683 specify IdentityFile in a different order to revert this
687 The sio(4) driver has been removed from the i386 and amd64
688 kernel configuration files. This means uart(4) is now the
689 default serial port driver on those platforms as well.
691 To prevent collisions with the sio(4) driver, the uart(4) driver
692 uses different names for its device nodes. This means the
693 onboard serial port will now most likely be called "ttyu0"
694 instead of "ttyd0". You may need to reconfigure applications to
695 use the new device names.
697 When using the serial port as a boot console, be sure to update
698 /boot/device.hints and /etc/ttys before booting the new kernel.
699 If you forget to do so, you can still manually specify the hints
700 at the loader prompt:
702 set hint.uart.0.at="isa"
703 set hint.uart.0.port="0x3F8"
704 set hint.uart.0.flags="0x10"
705 set hint.uart.0.irq="4"
709 The gpt(8) utility has been removed. Use gpart(8) to partition
713 The version that Linuxulator emulates was changed from 2.4.2
714 to 2.6.16. If you experience any problems with Linux binaries
715 please try to set sysctl compat.linux.osrelease to 2.4.2 and
716 if it fixes the problem contact emulation mailing list.
719 ISDN4BSD (I4B) was removed from the src tree. You may need to
720 update a your kernel configuration and remove relevant entries.
723 I have checked in code to support multiple routing tables.
724 See the man pages setfib(1) and setfib(2).
725 This is a hopefully backwards compatible version,
726 but to make use of it you need to compile your kernel
727 with options ROUTETABLES=2 (or more up to 16).
730 The 802.11 wireless support was redone to enable multi-bss
731 operation on devices that are capable. The underlying device
732 is no longer used directly but instead wlanX devices are
733 cloned with ifconfig. This requires changes to rc.conf files.
735 ifconfig_ath0="WPA DHCP"
738 ifconfig_wlan0="WPA DHCP"
739 see rc.conf(5) for more details. In addition, mergemaster of
740 /etc/rc.d is highly recommended. Simultaneous update of userland
741 and kernel wouldn't hurt either.
743 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
744 modules were merged into the base wlan module. All references
745 to these modules (e.g. in kernel config files) must be removed.
748 psm(4) has gained write(2) support in native operation level.
749 Arbitrary commands can be written to /dev/psm%d and status can
750 be read back from it. Therefore, an application is responsible
751 for status validation and error recovery. It is a no-op in
752 other operation levels.
755 Support for KSE threading has been removed from the kernel. To
756 run legacy applications linked against KSE libmap.conf may
757 be used. The following libmap.conf may be used to ensure
758 compatibility with any prior release:
760 libpthread.so.1 libthr.so.1
761 libpthread.so.2 libthr.so.2
762 libkse.so.3 libthr.so.3
765 The layout of struct vmspace has changed. This affects libkvm
766 and any executables that link against libkvm and use the
767 kvm_getprocs() function. In particular, but not exclusively,
768 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
769 The effects are minimal, but it's advisable to upgrade world
773 The latest em driver no longer has support in it for the
774 82575 adapter, this is now moved to the igb driver. The
775 split was done to make new features that are incompatible
776 with older hardware easier to do.
779 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
780 likewise the kernel option is now GEOM_LINUX_LVM.
783 The default NFS mount mode has changed from UDP to TCP for
784 increased reliability. If you rely on (insecurely) NFS
785 mounting across a firewall you may need to update your
789 Belatedly note the addition of m_collapse for compacting
793 The fts(3) structures have been changed to use adequate
794 integer types for their members and so to be able to cope
795 with huge file trees. The old fts(3) ABI is preserved
796 through symbol versioning in libc, so third-party binaries
797 using fts(3) should still work, although they will not take
798 advantage of the extended types. At the same time, some
799 third-party software might fail to build after this change
800 due to unportable assumptions made in its source code about
801 fts(3) structure members. Such software should be fixed
802 by its vendor or, in the worst case, in the ports tree.
803 FreeBSD_version 800015 marks this change for the unlikely
804 case that a portable fix is impossible.
807 To upgrade to -current after this date, you must be running
808 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
809 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
812 The ADAPTIVE_GIANT kernel option has been retired because its
813 functionality is the default now.
816 The AT keyboard emulation of sunkbd(4) has been turned on
817 by default. In order to make the special symbols of the Sun
818 keyboards driven by sunkbd(4) work under X these now have
819 to be configured the same way as Sun USB keyboards driven
820 by ukbd(4) (which also does AT keyboard emulation), f.e.:
822 Option "XkbLayout" "us"
823 Option "XkbRules" "xorg"
824 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
827 It has been decided that it is desirable to provide ABI
828 backwards compatibility to the FreeBSD 4/5/6 versions of the
829 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
830 broken with the introduction of PCI domain support (see the
831 20070930 entry). Unfortunately, this required the ABI of
832 PCIOCGETCONF to be broken again in order to be able to
833 provide backwards compatibility to the old version of that
834 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
835 again. As for prominent ports this affects neither pciutils
836 nor xorg-server this time, the hal port needs to be rebuilt
840 The misnamed kthread_create() and friends have been renamed
841 to kproc_create() etc. Many of the callers already
843 I will return kthread_create() and friends in a while
844 with implementations that actually create threads, not procs.
845 Renaming corresponds with version 800002.
851 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
852 WITHOUT_LIBTHR are set.
855 The PCI code has been made aware of PCI domains. This means that
856 the location strings as used by pciconf(8) etc are now in the
857 following format: pci<domain>:<bus>:<device>[:<function>]. It
858 also means that consumers of <sys/pciio.h> potentially need to
859 be recompiled; this includes the hal and xorg-server ports.
862 The caching daemon (cached) was renamed to nscd. nscd.conf
863 configuration file should be used instead of cached.conf and
864 nscd_enable, nscd_pidfile and nscd_flags options should be used
865 instead of cached_enable, cached_pidfile and cached_flags in
869 The getfacl(1) utility now prints owning user and group name
870 instead of owning uid and gid in the three line comment header.
871 This is the same behavior as getfacl(1) on Solaris and Linux.
874 The new IPsec code is now compiled in using the IPSEC option. The
875 IPSEC option now requires "device crypto" be defined in your kernel
876 configuration. The FAST_IPSEC kernel option is now deprecated.
879 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
880 note the changed syntax - keep state is now on by default. Also
881 note the fact that ftp-proxy(8) has been changed from bottom up and
882 has been moved from libexec to usr/sbin. Changes in the ALTQ
883 handling also affect users of IPFW's ALTQ capabilities.
886 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
887 only IPsec supported by FreeBSD. The new IPsec stack
888 supports both IPv4 and IPv6. The kernel option will change
889 after the code changes have settled in. For now the kernel
890 option IPSEC is deprecated and FAST_IPSEC is the only option, that
891 will change after some settling time.
894 The wicontrol(8) utility has been removed from the base system. wi(4)
895 cards should be configured using ifconfig(8), see the man page for more
899 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
900 instead of the nve(4) driver. Please update your configuration
904 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
905 database if it is missing or older than the aliases file. If
906 desired, set the new rc.conf option sendmail_rebuild_aliases
907 to "YES" to restore that functionality.
910 The IPv4 multicast socket code has been considerably modified, and
911 moved to the file sys/netinet/in_mcast.c. Initial support for the
912 RFC 3678 Source-Specific Multicast Socket API has been added to
913 the IPv4 network stack.
915 Strict multicast and broadcast reception is now the default for
916 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
917 has now been removed.
919 The RFC 1724 hack for interface selection has been removed; the use
920 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
921 been added to replace it. Consumers such as routed will soon be
922 updated to reflect this.
924 These changes affect users who are running routed(8) or rdisc(8)
925 from the FreeBSD base system on point-to-point or unnumbered
929 The net80211 layer has changed significantly and all wireless
930 drivers that depend on it need to be recompiled. Further these
931 changes require that any program that interacts with the wireless
932 support in the kernel be recompiled; this includes: ifconfig,
933 wpa_supplicant, hostapd, and wlanstats. Users must also, for
934 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
935 if they use modules for wireless support. These modules implement
936 scanning support for station and ap modes, respectively. Failure
937 to load the appropriate module before marking a wireless interface
938 up will result in a message to the console and the device not
942 The pam_nologin(8) module ceases to provide an authentication
943 function and starts providing an account management function.
944 Consequent changes to /etc/pam.d should be brought in using
945 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
946 need manual editing as follows. Locate this line (or similar):
948 auth required pam_nologin.so no_warn
950 and change it according to this example:
952 account required pam_nologin.so no_warn
954 That is, the first word needs to be changed from "auth" to
955 "account". The new line can be moved to the account section
956 within the file for clarity. Not updating pam.conf(5) files
957 will result in nologin(5) ignored by the respective services.
960 The ether_ioctl() function has been synchronized with ioctl(2)
961 and ifnet.if_ioctl. Due to that, the size of one of its arguments
962 has changed on 64-bit architectures. All kernel modules using
963 ether_ioctl() need to be rebuilt on such architectures.
966 Improved INCLUDE_CONFIG_FILE support has been introduced to the
967 config(8) utility. In order to take advantage of this new
968 functionality, you are expected to recompile and install
969 src/usr.sbin/config. If you don't rebuild config(8), and your
970 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
971 build will be broken because of a missing "kernconfstring"
975 Symbol versioning is enabled by default. To disable it, use
976 option WITHOUT_SYMVER. It is not advisable to attempt to
977 disable symbol versioning once it is enabled; your installworld
978 will break because a symbol version-less libc will get installed
979 before the install tools. As a result, the old install tools,
980 which previously had symbol dependencies to FBSD_1.0, will fail
981 because the freshly installed libc will not have them.
983 The default threading library (providing "libpthread") has been
984 changed to libthr. If you wish to have libkse as your default,
985 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
988 The ABI breakage in sendmail(8)'s libmilter has been repaired
989 so it is no longer necessary to recompile mail filters (aka,
990 milters). If you recompiled mail filters after the 20070408
991 note, it is not necessary to recompile them again.
994 The new trunk(4) driver has been renamed to lagg(4) as it better
995 reflects its purpose. ifconfig will need to be recompiled.
998 sendmail(8) has been updated to version 8.14.1. Mail filters
999 (aka, milters) compiled against the libmilter included in the
1000 base operating system should be recompiled.
1003 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
1004 In order to use them one must agree to the respective LICENSE in
1005 share/doc/legal and define legal.intel_<name>.license_ack=1 via
1006 loader.conf(5) or kenv(1). Make sure to deinstall the now
1007 deprecated modules from the respective firmware ports.
1010 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
1011 were removed from FreeBSD's libc. These originally came from INRIA
1012 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
1013 deprecated in previous releases.
1014 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
1015 replace it as a more portable (and re-entrant) API.
1018 To support interrupt filtering a modification to the newbus API
1019 has occurred, ABI was broken and __FreeBSD_version was bumped
1020 to 700031. Please make sure that your kernel and modules are in
1021 sync. For more info:
1022 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
1025 The IPv6 multicast forwarding code may now be loaded into GENERIC
1026 kernels by loading the ip_mroute.ko module. This is built into the
1027 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
1028 set; see src.conf(5) for more information.
1031 The output of netstat -r has changed. Without -n, we now only
1032 print a "network name" without the prefix length if the network
1033 address and mask exactly match a Class A/B/C network, and an entry
1034 exists in the nsswitch "networks" map.
1035 With -n, we print the full unabbreviated CIDR network prefix in
1036 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
1037 This change is in preparation for changes such as equal-cost
1038 multipath, and to more generally assist operational deployment
1039 of FreeBSD as a modern IPv4 router.
1042 PIM has been turned on by default in the IPv4 multicast
1043 routing code. The kernel option 'PIM' has now been removed.
1044 PIM is now built by default if option 'MROUTING' is specified.
1045 It may now be loaded into GENERIC kernels by loading the
1046 ip_mroute.ko module.
1049 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
1050 has been removed. Its functionality may be achieved by explicitly
1051 configuring gif(4) interfaces and using the 'phyint' keyword in
1053 XORP does not support source-routed IPv4 multicast tunnels nor the
1054 integrated IPIP tunneling, therefore it is not affected by this
1055 change. The __FreeBSD_version macro has been bumped to 700030.
1058 Support for PCI Message Signalled Interrupts has been
1059 re-enabled in the bge driver, only for those chips which are
1060 believed to support it properly. If there are any problems,
1061 MSI can be disabled completely by setting the
1062 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
1066 Support for PCI Message Signalled Interrupts has been
1067 disabled again in the bge driver. Many revisions of the
1068 hardware fail to support it properly. Support can be
1069 re-enabled by removing the #define of BGE_DISABLE_MSI in
1070 "src/sys/dev/bge/if_bge.c".
1073 Support for PCI Message Signalled Interrupts has been added
1074 to the bge driver. If there are any problems, MSI can be
1075 disabled completely by setting the 'hw.pci.enable_msi' and
1076 'hw.pci.enable_msix' tunables to 0 in the loader.
1079 The removal of several facets of the experimental Threading
1080 system from the kernel means that the proc and thread structures
1081 have changed quite a bit. I suggest all kernel modules that might
1082 reference these structures be recompiled.. Especially the
1086 Sound infrastructure has been updated with various fixes and
1087 improvements. Most of the changes are pretty much transparent,
1088 with exceptions of followings:
1089 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1090 moved to their own dev sysctl nodes, for example:
1091 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1092 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1093 own chardev in the form of "dsp%d.<function>%d", where <function>
1094 is p = playback, r = record and v = virtual, respectively. Users
1095 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1096 This does not affect those who are using "/dev/dsp".
1099 geom(4)'s gmirror(8) class metadata structure has been
1100 rev'd from v3 to v4. If you update across this point and
1101 your metadata is converted for you, you will not be easily
1102 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1103 kernel module will be unable to read the v4 metadata. You
1104 can resolve this by doing from the loader(8) prompt:
1106 set vfs.root.mountfrom="ufs:/dev/XXX"
1108 where XXX is the root slice of one of the disks that composed
1109 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1110 the array the same way you built it originally.
1113 The following binaries have been disconnected from the build:
1114 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1115 and mount_std. The functionality of these programs has been
1116 moved into the mount program. For example, to mount a devfs
1117 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1118 This does not affect entries in /etc/fstab, since entries in
1119 /etc/fstab are always processed with "mount -t fstype".
1122 Support for PCI Message Signalled Interrupts on i386 and amd64
1123 has been added to the kernel and various drivers will soon be
1124 updated to use MSI when it is available. If there are any problems,
1125 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1126 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1129 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1130 The lockmgr object layout has been changed as a result of having
1131 a lock_object embedded in it. As a consequence all file system
1132 kernel modules must be re-compiled. The mutex profiling man page
1133 has not yet been updated to reflect this change.
1136 KSE in the kernel has now been made optional and turned on by
1137 default. Use 'nooption KSE' in your kernel config to turn it
1138 off. All kernel modules *must* be recompiled after this change.
1139 There-after, modules from a KSE kernel should be compatible with
1140 modules from a NOKSE kernel due to the temporary padding fields
1141 added to 'struct proc'.
1144 mrouted and its utilities have been removed from the base system.
1147 Some ioctl(2) command codes have changed. Full backward ABI
1148 compatibility is provided if the "options COMPAT_FREEBSD6" is
1149 present in the kernel configuration file. Make sure to add
1150 this option to your kernel config file, or recompile X.Org
1151 and the rest of ports; otherwise they may refuse to work.
1154 tcpslice has been removed from the base system.
1157 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1158 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1159 systat needs to be rebuilt.
1162 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1165 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1166 for IPFIREWALL_FORWARD is now as it was before when it was first
1167 committed and for years after. The behaviour is now ON.
1170 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1171 Now it can decrypt files created from different architectures.
1172 Unfortunately, it is no longer able to decrypt a cipher text
1173 generated with an older version on 64 bit architectures.
1174 If you have such a file, you need old utility to decrypt it.
1177 The interface version of the i4b kernel part has changed. So
1178 after updating the kernel sources and compiling a new kernel,
1179 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1180 be rebuilt, and vice versa.
1183 The XBOX kernel now defaults to the nfe(4) driver instead of
1184 the nve(4) driver. Please update your configuration
1188 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1189 PCnet family of NICs has been removed. The new le(4) driver serves
1190 as an equivalent but cross-platform replacement with the pcn(4)
1191 driver still providing performance-optimized support for the subset
1192 of AMD Am79C971 PCnet-FAST and greater chips as before.
1195 The machdep.* sysctls and the adjkerntz utility have been
1196 modified a bit. The new adjkerntz utility uses the new
1197 sysctl names and sysctlbyname() calls, so it may be impossible
1198 to run an old /sbin/adjkerntz utility in single-user mode
1199 with a new kernel. Replace the `adjkerntz -i' step before
1200 `make installworld' with:
1202 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1204 and proceed as usual with the rest of the installworld-stage
1205 steps. Otherwise, you risk installing binaries with their
1206 timestamp set several hours in the future, especially if
1207 you are running with local time set to GMT+X hours.
1210 The ip6fw utility has been removed. The behavior provided by
1211 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1212 have been updated to deal with it. There are some rules that
1213 might not migrate cleanly. Use rc.firewall6 as a template to
1217 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1218 attachments have been removed. Make sure to configure scc(4)
1219 on sparc64. Note also that by default puc(4) will use uart(4)
1220 and not sio(4) for serial ports because interrupt handling has
1221 been optimized for multi-port serial cards and only uart(4)
1222 implements the interface to support it.
1225 The scc(4) driver replaces puc(4) for Serial Communications
1226 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1227 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1228 configuration to make sure that the serial ports remain
1232 Most world/kernel related NO_* build options changed names.
1233 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1234 after FreeBSD ports) and should be set in /etc/src.conf
1235 (the src.conf(5) manpage is provided). Full backwards
1236 compatibility is maintained for the time being though it's
1237 highly recommended to start moving old options out of the
1238 system-wide /etc/make.conf file into the new /etc/src.conf
1239 while also properly renaming them. More conversions will
1240 likely follow. Posting to current@:
1242 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1245 The NETSMBCRYPTO kernel option has been retired because its
1246 functionality is always included in NETSMB and smbfs.ko now.
1249 The TDFX_LINUX kernel option was retired and replaced by the
1250 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1251 kernel module. Loading it alone should suffice to get 3dfx support
1252 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1256 The 'audit' group was added to support the new auditing functionality
1257 in the base system. Be sure to follow the directions for updating,
1258 including the requirement to run mergemaster -p.
1261 The kernel ABI to file system modules was changed on i386.
1262 Please make sure that your kernel and modules are in sync.
1265 This actually occured some time ago, but installing the kernel
1266 now also installs a bunch of symbol files for the kernel modules.
1267 This increases the size of /boot/kernel to about 67Mbytes. You
1268 will need twice this if you will eventually back this up to kernel.old
1269 on your next install.
1270 If you have a shortage of room in your root partition, you should add
1271 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1272 to your /etc/make.conf.
1275 libc's malloc implementation has been replaced. This change has the
1276 potential to uncover application bugs that previously went unnoticed.
1277 See the malloc(3) manual page for more details.
1280 The generic netgraph(4) cookie has been changed. If you upgrade
1281 kernel passing this point, you also need to upgrade userland
1282 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1285 si(4)'s device files now contain the unit number.
1286 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1289 The kernel ABI was mostly destroyed due to a change in the size
1290 of struct lock_object which is nested in other structures such
1291 as mutexes which are nested in all sorts of other structures.
1292 Make sure your kernel and modules are in sync.
1295 The page coloring algorithm in the VM subsystem was converted
1296 from tuning with kernel options to autotuning. Please remove
1297 any PQ_* option except PQ_NOOPT from your kernel config.
1300 The net80211-related tools in the tools/tools/ath directory
1301 have been moved to tools/tools/net80211 and renamed with a
1302 "wlan" prefix. Scripts that use them should be adjusted
1306 Scripts in the local_startup directories (as defined in
1307 /etc/defaults/rc.conf) that have the new rc.d semantics will
1308 now be run as part of the base system rcorder. If there are
1309 errors or problems with one of these local scripts, it could
1310 cause boot problems. If you encounter such problems, boot in
1311 single user mode, remove that script from the */rc.d directory.
1312 Please report the problem to the port's maintainer, and the
1313 freebsd-ports@freebsd.org mailing list.
1316 The nodev mount option was deprecated in RELENG_6 (where it
1317 was a no-op), and is now unsupported. If you have nodev or dev listed
1318 in /etc/fstab, remove it, otherwise it will result in a mount error.
1321 ABI between ipfw(4) and ipfw(8) has been changed. You need
1322 to rebuild ipfw(8) when rebuilding kernel.
1325 rp(4)'s device files now contain the unit number.
1326 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1329 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1330 Its /etc/rc.conf.d configuration file has been `ppp' from
1331 the beginning, and hence there is no need to touch it.
1334 Now most modules get their build-time options from the kernel
1335 configuration file. A few modules still have fixed options
1336 due to their non-conformant implementation, but they will be
1337 corrected eventually. You may need to review the options of
1338 the modules in use, explicitly specify the non-default options
1339 in the kernel configuration file, and rebuild the kernel and
1343 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1344 to turn polling(4) on your interfaces.
1347 The old bridge(4) implementation was retired. The new
1348 if_bridge(4) serves as a full functional replacement.
1351 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1352 to conform to POSIX-2001. This change broke an ABI
1353 compatibility on 64 bit architecture. You have to recompile
1354 userland programs that use getaddrinfo(3) on 64 bit
1358 RELENG_6 branched here.
1361 The pccard_ifconfig rc.conf variable has been removed and a new
1362 variable, ifconfig_DEFAULT has been introduced. Unlike
1363 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1364 do not have ifconfig_ifn entries rather than just those in
1365 removable_interfaces.
1368 Some previous versions of PAM have permitted the use of
1369 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1370 to third party PAM modules in /usr/local/lib. A change has been
1371 made to require the use of absolute paths in order to avoid
1372 ambiguity and dependence on library path configuration, which may
1373 affect existing configurations.
1376 Major changes to network interface API. All drivers must be
1377 recompiled. Drivers not in the base system will need to be
1378 updated to the new APIs.
1381 Changes were made to kinfo_proc in sys/user.h. Please recompile
1382 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1383 will not behave correctly.
1385 The API and ABI for hwpmc(4) have changed with the addition
1386 of sampling support. Please recompile lib/libpmc(3) and
1387 usr.sbin/{pmcstat,pmccontrol}.
1390 The OpenBSD dhclient was imported in place of the ISC dhclient
1391 and the network interface configuration scripts were updated
1392 accordingly. If you use DHCP to configure your interfaces, you
1393 must now run devd. Also, DNS updating was lost so you will need
1394 to find a workaround if you use this feature.
1396 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1397 sure to run mergemaster -p (like you are supposed to do every time
1401 if_bridge was added to the tree. This has changed struct ifnet.
1402 Please recompile userland and all network related modules.
1405 The n_net of a struct netent was changed to an uint32_t, and
1406 1st argument of getnetbyaddr() was changed to an uint32_t, to
1407 conform to POSIX-2001. These changes broke an ABI
1408 compatibility on 64 bit architecture. With these changes,
1409 shlib major of libpcap was bumped. You have to recompile
1410 userland programs that use getnetbyaddr(3), getnetbyname(3),
1411 getnetent(3) and/or libpcap on 64 bit architecture.
1414 Kernel parsing of extra options on '#!' first lines of shell
1415 scripts has changed. Lines with multiple options likely will
1416 fail after this date. For full details, please see
1417 http://people.freebsd.org/~gad/Updating-20050528.txt
1420 The packet filter (pf) code has been updated to OpenBSD 3.7
1421 Please note the changed anchor syntax and the fact that
1422 authpf(8) now needs a mounted fdescfs(5) to function.
1425 The NO_MIXED_MODE kernel option has been removed from the i386
1426 amd64 platforms as its use has been superceded by the new local
1427 APIC timer code. Any kernel config files containing this option
1431 The on-disk format of LC_CTYPE files was changed to be machine
1432 independent. Please make sure NOT to use NO_CLEAN buildworld
1433 when crossing this point. Crossing this point also requires
1434 recompile or reinstall of all locale depended packages.
1437 The ifi_epoch member of struct if_data has been changed to
1438 contain the uptime at which the interface was created or the
1439 statistics zeroed rather then the wall clock time because
1440 wallclock time may go backwards. This should have no impact
1441 unless an snmp implementation is using this value (I know of
1442 none at this point.)
1445 The acpi_perf and acpi_throttle drivers are now part of the
1446 acpi(4) main module. They are no longer built separately.
1449 The layout of struct image_params has changed. You have to
1450 recompile all compatibility modules (linux, svr4, etc) for use
1451 with the new kernel.
1454 The p4tcc driver has been merged into cpufreq(4). This makes
1455 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1456 compile in "device cpufreq" to restore this functionality.
1459 The responsibility of recomputing the file system summary of
1460 a SoftUpdates-enabled dirty volume has been transferred to the
1461 background fsck. A rebuild of fsck(8) utility is recommended
1462 if you have updated the kernel.
1464 To get the old behavior (recompute file system summary at mount
1465 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1466 mounting the new volume.
1469 The cpufreq import is complete. As part of this, the sysctls for
1470 acpi(4) throttling have been removed. The power_profile script
1471 has been updated, so you can use performance/economy_cpu_freq in
1472 rc.conf(5) to set AC on/offline cpu frequencies.
1475 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1476 requires recompiling libnetgraph and userland netgraph utilities.
1479 Support for abbreviated forms of a number of ipfw options is
1480 now deprecated. Warnings are printed to stderr indicating the
1481 correct full form when a match occurs. Some abbreviations may
1482 be supported at a later date based on user feedback. To be
1483 considered for support, abbreviations must be in use prior to
1484 this commit and unlikely to be confused with current key words.
1487 By a popular demand, a lot of NOFOO options were renamed
1488 to NO_FOO (see bsd.compat.mk for a full list). The old
1489 spellings are still supported, but will cause annoying
1490 warnings on stderr. Make sure you upgrade properly (see
1491 the COMMON ITEMS: section later in this file).
1494 Auto-loading of ancillary wlan modules such as wlan_wep has
1495 been temporarily disabled; you need to statically configure
1496 the modules you need into your kernel or explicitly load them
1497 prior to use. Specifically, if you intend to use WEP encryption
1498 with an 802.11 device load/configure wlan_wep; if you want to
1499 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1500 and wlan_xauth as required.
1503 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1504 (``enable lqr''), older versions would revert to LCP ECHO mode on
1505 negotiation failure. Now, ``enable echo'' is required for this
1506 behaviour. The ppp version number has been bumped to 3.4.2 to
1510 The wlan support has been updated to split the crypto support
1511 into separate modules. For static WEP you must configure the
1512 wlan_wep module in your system or build and install the module
1513 in place where it can be loaded (the kernel will auto-load
1514 the module when a wep key is configured).
1517 The ath driver has been updated to split the tx rate control
1518 algorithm into a separate module. You need to include either
1519 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1522 Support for systems with an 80386 CPU has been removed. Please
1523 use FreeBSD 5.x or earlier on systems with an 80386.
1526 We have had a hack which would mount the root filesystem
1527 R/W if the device were named 'md*'. As part of the vnode
1528 work I'm doing I have had to remove this hack. People
1529 building systems which use preloaded MD root filesystems
1530 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1531 their /etc/rc scripts.
1534 FreeBSD 5.3 shipped here.
1537 The size of struct tcpcb has changed again due to the removal
1538 of RFC1644 T/TCP. You have to recompile userland programs that
1539 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1542 The size of struct tcpcb has changed. You have to recompile
1543 userland programs that read kmem for tcp sockets directly
1544 (netstat, sockstat, etc.)
1547 RELENG_5 branched here. For older entries, please see updating
1548 in the RELENG_5 branch.
1554 Avoid using make -j when upgrading. From time to time in the
1555 past there have been problems using -j with buildworld and/or
1556 installworld. This is especially true when upgrading between
1557 "distant" versions (eg one that cross a major release boundary
1558 or several minor releases, or when several months have passed
1559 on the -current branch).
1561 Sometimes, obscure build problems are the result of environment
1562 poisoning. This can happen because the make utility reads its
1563 environment when searching for values for global variables.
1564 To run your build attempts in an "environmental clean room",
1565 prefix all make commands with 'env -i '. See the env(1) manual
1566 page for more details.
1568 When upgrading from one major version to another it is generally
1569 best to upgrade to the latest code in the currently installed branch
1570 first, then do an upgrade to the new branch. This is the best-tested
1571 upgrade path, and has the highest probability of being successful.
1572 Please try this approach before reporting problems with a major
1577 If you are updating from a prior version of FreeBSD (even one just
1578 a few days old), you should follow this procedure. It is the most
1579 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1581 make kernel-toolchain
1582 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1583 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1585 To test a kernel once
1586 ---------------------
1587 If you just want to boot a kernel once (because you are not sure
1588 if it works, or if you want to boot a known bad kernel to provide
1589 debugging information) run
1590 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1591 nextboot -k testkernel
1593 To just build a kernel when you know that it won't mess you up
1594 --------------------------------------------------------------
1595 This assumes you are already running a 5.X system. Replace
1596 ${arch} with the architecture of your machine (e.g. "i386",
1597 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1599 cd src/sys/${arch}/conf
1600 config KERNEL_NAME_HERE
1601 cd ../compile/KERNEL_NAME_HERE
1606 If this fails, go to the "To build a kernel" section.
1608 To rebuild everything and install it on the current system.
1609 -----------------------------------------------------------
1610 # Note: sometimes if you are running current you gotta do more than
1611 # is listed here if you are upgrading from a really old current.
1613 <make sure you have good level 0 dumps>
1615 make kernel KERNCONF=YOUR_KERNEL_HERE
1617 <reboot in single user> [3]
1625 To cross-install current onto a separate partition
1626 --------------------------------------------------
1627 # In this approach we use a separate partition to hold
1628 # current's root, 'usr', and 'var' directories. A partition
1629 # holding "/", "/usr" and "/var" should be about 2GB in
1632 <make sure you have good level 0 dumps>
1635 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1636 <maybe newfs current's root partition>
1637 <mount current's root partition on directory ${CURRENT_ROOT}>
1638 make installworld DESTDIR=${CURRENT_ROOT}
1639 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1640 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1641 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1642 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1643 <reboot into current>
1644 <do a "native" rebuild/install as described in the previous section>
1645 <maybe install compatibility libraries from ports/misc/compat*>
1649 To upgrade in-place from 5.x-stable to current
1650 ----------------------------------------------
1651 <make sure you have good level 0 dumps>
1653 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1655 <reboot in single user> [3]
1662 Make sure that you've read the UPDATING file to understand the
1663 tweaks to various things you need. At this point in the life
1664 cycle of current, things change often and you are on your own
1665 to cope. The defaults can also change, so please read ALL of
1666 the UPDATING entries.
1668 Also, if you are tracking -current, you must be subscribed to
1669 freebsd-current@freebsd.org. Make sure that before you update
1670 your sources that you have read and understood all the recent
1671 messages there. If in doubt, please track -stable which has
1672 much fewer pitfalls.
1674 [1] If you have third party modules, such as vmware, you
1675 should disable them at this point so they don't crash your
1678 [3] From the bootblocks, boot -s, and then do
1683 adjkerntz -i # if CMOS is wall time
1684 Also, when doing a major release upgrade, it is required that
1685 you boot into single user mode to do the installworld.
1687 [4] Note: This step is non-optional. Failure to do this step
1688 can result in a significant reduction in the functionality of the
1689 system. Attempting to do it by hand is not recommended and those
1690 that pursue this avenue should read this file carefully, as well
1691 as the archives of freebsd-current and freebsd-hackers mailing lists
1692 for potential gotchas.
1694 [5] Usually this step is a noop. However, from time to time
1695 you may need to do this if you get unknown user in the following
1696 step. It never hurts to do it all the time. You may need to
1697 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1698 install) after the buildworld before this step if you last updated
1699 from current before 20020224 or from -stable before 20020408.
1701 [8] In order to have a kernel that can run the 4.x binaries
1702 needed to do an installworld, you must include the COMPAT_FREEBSD4
1703 option in your kernel. Failure to do so may leave you with a system
1704 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1705 is required to run the 5.x binaries on more recent kernels.
1707 Make sure that you merge any new devices from GENERIC since the
1708 last time you updated your kernel config file.
1710 [9] When checking out sources, you must include the -P flag to have
1711 cvs prune empty directories.
1713 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1714 "?=" instead of the "=" assignment operator, so that buildworld can
1715 override the CPUTYPE if it needs to.
1717 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1718 not on the command line, or in /etc/make.conf. buildworld will
1719 warn if it is improperly defined.
1722 This file contains a list, in reverse chronological order, of major
1723 breakages in tracking -current. Not all things will be listed here,
1724 and it only starts on October 16, 2004. Updating files can found in
1725 previous releases if your system is older than this.
1727 Copyright information:
1729 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1731 Redistribution, publication, translation and use, with or without
1732 modification, in full or in part, in any form or format of this
1733 document are permitted without further permission from the author.
1735 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1736 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1737 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1738 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1739 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1740 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1741 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1742 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1743 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1744 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1745 POSSIBILITY OF SUCH DAMAGE.
1747 If you find this document useful, and you want to, you may buy the
1750 Contact Warner Losh if you have any questions about your use of