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.
19 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
20 to allow 32-bit compatibility on non-x86 platforms. All kernel
21 configurations on amd64 and ia64 platforms using these options must
22 be modified accordingly.
25 Introduce the kernel thread "deadlock resolver" (which can be enabled
26 via the DEADLKRES option, see NOTES for more details) and the
27 sleepq_type() function for sleepqueues.
30 802.11s D3.03 support was committed. This is incompatible with
31 the previous code, which was based on D3.0.
34 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
35 mount(8) and -a option for df(1) to see them.
38 Remove the option STOP_NMI. The default action is now to use NMI
39 only for KDB via the newly introduced function stop_cpus_hard()
40 and maintain stop_cpus() to just use a normal IPI_STOP on ia32
47 Bump the shared library version numbers for all libraries that
48 do not use symbol versioning as part of the 8.0-RELEASE cycle.
49 Bump __FreeBSD_version to 800105.
52 Due to changes in the implementation of virtual network stack
53 support, all network-related kernel modules must be recompiled.
54 As this change breaks the ABI, bump __FreeBSD_version to 800104.
57 The TOE interface to the TCP syncache has been modified to remove struct
58 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
59 cxgb driver is the only TOE consumer affected by this change, and needs
60 to be recompiled along with the kernel. As this change breaks the ABI,
61 bump __FreeBSD_version to 800103.
64 Padding has been added to struct tcpcb, sackhint and tcpstat in
65 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
66 maintainig the ABI. However, this change breaks the ABI, so bump
67 __FreeBSD_version to 800102. User space tools that rely on the size of
68 any of these structs (e.g. sockstat) need to be recompiled.
71 The NFS_LEGACYRPC option has been removed along with the old
72 kernel RPC implementation that this option selected. Kernel
73 configurations may need to be adjusted.
76 The network interface device nodes at /dev/net/<interface> have
77 been removed. All ioctl operations can be performed the normal
78 way using routing sockets. The kqueue functionality can
79 generally be replaced with routing sockets.
82 The documentation from the FreeBSD Documentation Project
83 (Handbook, FAQ, etc.) is now installed via packages by
84 sysinstall(8) and under the /usr/local/share/doc/freebsd
85 directory instead of /usr/share/doc.
88 The ABI of various structures related to the SYSV IPC API have
89 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
90 kernel options now all require COMPAT_FREEBSD7.
91 Bump __FreeBSD_version to 800100.
94 Layout of struct vnet has changed as routing related variables
95 were moved to their own Vimage module. Modules need to be
96 recompiled. Bump __FreeBSD_version to 800099.
99 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
100 and 1024 respectively. As long as no more than 16 groups per
101 process are used, no changes should be visible. When more
102 than 16 groups are used, old binaries may fail if they call
103 getgroups() or getgrouplist() with statically sized storage.
104 Recompiling will work around this, but applications should be
105 modified to use dynamically allocated storage for group arrays
106 as POSIX.1-2008 does not cap an implementation's number of
107 supported groups at NGROUPS_MAX+1 as previous versions did.
109 NFS and portalfs mounts may also be affected as the list of
110 groups is truncated to 16. Users of NFS who use more than 16
111 groups, should take care that negative group permissions are not
112 used on the exported file systems as they will not be reliable
113 unless a GSSAPI based authentication method is used.
116 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
117 This option compiles in the support for adaptive spinning for lockmgrs
118 which want to enable it. The lockinit() function now accepts the
119 flag LK_ADAPTIVE in order to make the lock object subject to
120 adaptive spinning when both held in write and read mode.
123 The layout of the structure returned by IEEE80211_IOC_STA_INFO
124 has changed. User applications that use this ioctl need to be
128 The layout of struct thread has changed. Kernel and modules
132 The layout of structs ifnet, domain, protosw and vnet_net has
133 changed. Kernel modules need to be rebuilt.
134 Bump __FreeBSD_version to 800097.
137 window(1) has been removed from the base system. It can now be
138 installed from ports. The port is called misc/window.
141 The way we are storing and accessing `routing table' entries
142 has changed. Programs reading the FIB, like netstat, need to
146 A new netisr implementation has been added for FreeBSD 8. Network
147 file system modules, such as igmp, ipdivert, and others, should be
149 Bump __FreeBSD_version to 800096.
152 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
156 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
157 Bump __FreeBSD_version to 800094.
160 Add mnt_xflag field to 'struct mount'. File system modules
162 Bump __FreeBSD_version to 800093.
165 The compiling option ADAPTIVE_SX has been retired while it has been
166 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
167 The KPI for sx_init_flags() changes as accepting flags:
168 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
169 has been introduced in order to handle the reversed logic.
170 Bump __FreeBSD_version to 800092.
173 Add support for hierarchical jails. Remove global securelevel.
174 Bump __FreeBSD_version to 800091.
177 The layout of struct vnet_net has changed, therefore modules
179 Bump __FreeBSD_version to 800090.
182 The newly imported zic(8) produces a new format in the
183 output. Please run tzsetup(8) to install the newly created
184 data to /etc/localtime.
187 The sysctl tree for the usb stack has renamed from hw.usb2.* to
188 hw.usb.* and is now consistent again with previous releases.
191 802.11 monitor mode support was revised and driver api's
192 were changed. Drivers dependent on net80211 now support
193 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
194 user-visible data structures were changed but applications
195 that use DLT_IEEE802_11 may require changes.
196 Bump __FreeBSD_version to 800088.
199 The layout of the following structs has changed: sysctl_oid,
200 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
201 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
202 panics may be experienced. World rebuild is required for
203 correctly checking networking state from userland.
204 Bump __FreeBSD_version to 800085.
207 MLDv2 and Source-Specific Multicast (SSM) have been merged
208 to the IPv6 stack. VIMAGE hooks are in but not yet used.
209 The implementation of SSM within FreeBSD's IPv6 stack closely
210 follows the IPv4 implementation.
212 For kernel developers:
214 * The most important changes are that the ip6_output() and
215 ip6_input() paths no longer take the IN6_MULTI_LOCK,
216 and this lock has been downgraded to a non-recursive mutex.
218 * As with the changes to the IPv4 stack to support SSM, filtering
219 of inbound multicast traffic must now be performed by transport
220 protocols within the IPv6 stack. This does not apply to TCP and
221 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
223 * The KPIs used by IPv6 multicast are similar to those used by
224 the IPv4 stack, with the following differences:
225 * im6o_mc_filter() is analogous to imo_multicast_filter().
226 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
227 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
228 * IN6_LOOKUP_MULTI() has been deprecated and removed.
229 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
230 for MLDv1 have an additional 'timer' argument which is used to
231 jitter the initial membership report for the solicited-node
232 multicast membership on-link.
233 * This is not strictly needed for MLDv2, which already jitters
234 its report transmissions. However, the 'timer' argument is
235 preserved in case MLDv1 is active on the interface.
237 * The KAME linked-list based IPv6 membership implementation has
238 been refactored to use a vector similar to that used by the IPv4
240 Code which maintains a list of its own multicast memberships
241 internally, e.g. carp, has been updated to reflect the new
244 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
245 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
246 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
247 implementation constraint which needs to be addressed in HEAD.
249 For application developers:
251 * The changes are broadly similar to those made for the IPv4
254 * The use of IPv4 and IPv6 multicast socket options on the same
255 socket, using mapped addresses, HAS NOT been tested or supported.
257 * There are a number of issues with the implementation of various
258 IPv6 multicast APIs which need to be resolved in the API surface
259 before the implementation is fully compatible with KAME userland
260 use, and these are mostly to do with interface index treatment.
262 * The literature available discusses the use of either the delta / ASM
263 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
264 using setsourcefilter(3)/getsourcefilter(3). For more information
265 please refer to RFC 3768, 'Socket Interface Extensions for
266 Multicast Source Filters'.
268 * Applications which use the published RFC 3678 APIs should be fine.
270 For systems administrators:
272 * The mtest(8) utility has been refactored to support IPv6, in
273 addition to IPv4. Interface addresses are no longer accepted
274 as arguments, their names must be used instead. The utility
275 will map the interface name to its first IPv4 address as
276 returned by getifaddrs(3).
278 * The ifmcstat(8) utility has also been updated to print the MLDv2
279 endpoint state and source filter lists via sysctl(3).
281 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
282 loopback of IPv6 multicast datagrams by default; it defaults to 1
283 to preserve the existing behaviour. Disabling multicast loopback is
284 recommended for optimal system performance.
286 * The IPv6 MROUTING code has been changed to examine this sysctl
287 instead of attempting to perform a group lookup before looping
288 back forwarded datagrams.
290 Bump __FreeBSD_version to 800084.
293 Implement low-level Bluetooth HCI API.
294 Bump __FreeBSD_version to 800083.
297 The layout of struct malloc_type, used by modules to register new
298 memory allocation types, has changed. Most modules will need to
299 be rebuilt or panics may be experienced.
300 Bump __FreeBSD_version to 800081.
303 Anticipate overflowing inp_flags - add inp_flags2.
304 This changes most offsets in inpcb, so checking v4 connection
305 state will require a world rebuild.
306 Bump __FreeBSD_version to 800080.
309 Add an llentry to struct route and struct route_in6. Modules
310 embedding a struct route will need to be recompiled.
311 Bump __FreeBSD_version to 800079.
314 The size of rt_metrics_lite and by extension rtentry has changed.
315 Networking administration apps will need to be recompiled.
316 The route command now supports show as an alias for get, weighting
317 of routes, sticky and nostick flags to alter the behavior of stateful
319 Bump __FreeBSD_version to 800078.
322 Do not use Giant for kbdmux(4) locking. This is wrong and
323 apparently causing more problems than it solves. This will
324 re-open the issue where interrupt handlers may race with
325 kbdmux(4) in polling mode. Typical symptoms include (but
326 not limited to) duplicated and/or missing characters when
327 low level console functions (such as gets) are used while
328 interrupts are enabled (for example geli password prompt,
329 mountroot prompt etc.). Disabling kbdmux(4) may help.
332 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
333 kernel modules referencing any of the above need to be recompiled.
334 Bump __FreeBSD_version to 800075.
337 GEOM_PART has become the default partition slicer for storage devices,
338 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
339 introduces some changes:
341 MSDOS/EBR: the devices created from MSDOS extended partition entries
342 (EBR) can be named differently than with GEOM_MBR and are now symlinks
343 to devices with offset-based names. fstabs may need to be modified.
345 BSD: the "geometry does not match label" warning is harmless in most
346 cases but it points to problems in file system misalignment with
347 disk geometry. The "c" partition is now implicit, covers the whole
348 top-level drive and cannot be (mis)used by users.
350 General: Kernel dumps are now not allowed to be written to devices
351 whose partition types indicate they are meant to be used for file
352 systems (or, in case of MSDOS partitions, as something else than
355 Most of these changes date approximately from 200812.
358 The uscanner(4) driver has been removed from the kernel. This follows
359 Linux removing theirs in 2.6 and making libusb the default interface
363 The multicast forwarding code has been cleaned up. netstat(1)
364 only relies on KVM now for printing bandwidth upcall meters.
365 The IPv4 and IPv6 modules are split into ip_mroute_mod and
366 ip6_mroute_mod respectively. The config(5) options for statically
367 compiling this code remain the same, i.e. 'options MROUTING'.
370 Support for the IFF_NEEDSGIANT network interface flag has been
371 removed, which means that non-MPSAFE network device drivers are no
372 longer supported. In particular, if_ar, if_sr, and network device
373 drivers from the old (legacy) USB stack can no longer be built or
377 POSIX.1 Native Language Support (NLS) has been enabled in libc and
378 a bunch of new language catalog files have also been added.
379 This means that some common libc messages are now localized and
380 they depend on the LC_MESSAGES environmental variable.
383 The k8temp(4) driver has been renamed to amdtemp(4) since
384 support for K10 and K11 CPU families was added.
387 IGMPv3 and Source-Specific Multicast (SSM) have been merged
388 to the IPv4 stack. VIMAGE hooks are in but not yet used.
390 For kernel developers, the most important changes are that the
391 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
392 and this lock has been downgraded to a non-recursive mutex.
394 Transport protocols (UDP, Raw IP) are now responsible for filtering
395 inbound multicast traffic according to group membership and source
396 filters. The imo_multicast_filter() KPI exists for this purpose.
397 Transports which do not use multicast (SCTP, TCP) already reject
398 multicast by default. Forwarding and receive performance may improve
399 as a mutex acquisition is no longer needed in the ip_input()
400 low-level input path. in_addmulti() and in_delmulti() are shimmed
401 to new KPIs which exist to support SSM in-kernel.
403 For application developers, it is recommended that loopback of
404 multicast datagrams be disabled for best performance, as this
405 will still cause the lock to be taken for each looped-back
406 datagram transmission. The net.inet.ip.mcast.loop sysctl may
407 be tuned to 0 to disable loopback by default; it defaults to 1
408 to preserve the existing behaviour.
410 For systems administrators, to obtain best performance with
411 multicast reception and multiple groups, it is always recommended
412 that a card with a suitably precise hash filter is used. Hash
413 collisions will still result in the lock being taken within the
414 transport protocol input path to check group membership.
416 If deploying FreeBSD in an environment with IGMP snooping switches,
417 it is recommended that the net.inet.igmp.sendlocal sysctl remain
418 enabled; this forces 224.0.0.0/24 group membership to be announced
421 The size of 'struct igmpstat' has changed; netstat needs to be
422 recompiled to reflect this.
423 Bump __FreeBSD_version to 800070.
426 libusb20.so.1 is now installed as libusb.so.1 and the ports system
427 updated to use it. This requires a buildworld/installworld in order to
428 update the library and dependencies (usbconfig, etc). Its advisable to
429 rebuild all ports which uses libusb. More specific directions are given
430 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
431 libusb are no longer required and can be removed.
434 A workaround is committed to allow the creation of System V shared
435 memory segment of size > 2 GB on the 64-bit architectures.
436 Due to a limitation of the existing ABI, the shm_segsz member
437 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
438 wrong for large segments. Note that limits must be explicitly
439 raised to allow such segments to be created.
442 The layout of struct ifnet has changed, requiring a rebuild of all
443 network device driver modules.
446 The /dev handling for the new USB stack has changed, a
447 buildworld/installworld is required for libusb20.
450 The new USB2 stack has now been permanently moved in and all kernel and
451 module names reverted to their previous values (eg, usb, ehci, ohci,
452 ums, ...). The old usb stack can be compiled in by prefixing the name
453 with the letter 'o', the old usb modules have been removed.
454 Updating entry 20090216 for xorg and 20090215 for libmap may still
458 The rc.conf(5) option if_up_delay has been renamed to
459 defaultroute_delay to better reflect its purpose. If you have
460 customized this setting in /etc/rc.conf you need to update it to
464 xorg 7.4 wants to configure its input devices via hald which does not
465 yet work with USB2. If the keyboard/mouse does not work in xorg then
467 Option "AllowEmptyInput" "off"
468 to your ServerLayout section. This will cause X to use the configured
469 kbd and mouse sections from your xorg.conf.
472 The GENERIC kernels for all architectures now default to the new USB2
473 stack. No kernel config options or code have been removed so if a
474 problem arises please report it and optionally revert to the old USB
475 stack. If you are loading USB kernel modules or have a custom kernel
476 that includes GENERIC then ensure that usb names are also changed over,
477 eg uftdi -> usb2_serial_ftdi.
479 Older programs linked against the ports libusb 0.1 need to be
480 redirected to the new stack's libusb20. /etc/libmap.conf can
482 # Map old usb library to new one for usb2 stack
483 libusb-0.1.so.8 libusb20.so.1
486 All USB ethernet devices now attach as interfaces under the name ueN
487 (eg. ue0). This is to provide a predictable name as vendors often
488 change usb chipsets in a product without notice.
491 The ichsmb(4) driver has been changed to require SMBus slave
492 addresses be left-justified (xxxxxxx0b) rather than right-justified.
493 All of the other SMBus controller drivers require left-justified
494 slave addresses, so this change makes all the drivers provide the
498 INET6 statistics (struct ip6stat) was updated.
499 netstat(1) needs to be recompiled.
502 NTFS has been removed from GENERIC kernel on amd64 to match
503 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
504 will load ntfs.ko module automatically when NTFS support is
505 actually needed, unless ntfs.ko is not installed or security
506 level prohibits loading kernel modules. If either is the case,
507 "options NTFS" has to be added into kernel config.
510 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
511 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
512 800061. User space tools that rely on the size of struct tcpcb in
513 tcp_var.h (e.g. sockstat) need to be recompiled.
516 ng_tty(4) module updated to match the new TTY subsystem.
517 Due to API change, user-level applications must be updated.
518 New API support added to mpd5 CVS and expected to be present
519 in next mpd5.3 release.
522 With __FreeBSD_version 800060 the makefs tool is part of
523 the base system (it was a port).
526 The afdata and ifnet locks have been changed from mutexes to
527 rwlocks, network modules will need to be re-compiled.
530 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
531 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
532 The new code reduced struct rtentry{} by 16 bytes on 32-bit
533 architecture and 40 bytes on 64-bit architecture. The userland
534 applications "arp" and "ndp" have been updated accordingly.
535 The output from "netstat -r" shows only routing entries and
536 none of the L2 information.
539 __FreeBSD_version 800057 marks the switchover from the
540 binary ath hal to source code. Users must add the line:
542 options AH_SUPPORT_AR5416
544 to their kernel config files when specifying:
548 The ath_hal module no longer exists; the code is now compiled
549 together with the driver in the ath module. It is now
550 possible to tailor chip support (i.e. reduce the set of chips
551 and thereby the code size); consult ath_hal(4) for details.
554 __FreeBSD_version 800054 adds memory barriers to
555 <machine/atomic.h>, new interfaces to ifnet to facilitate
556 multiple hardware transmit queues for cards that support
557 them, and a lock-less ring-buffer implementation to
558 enable drivers to more efficiently manage queueing of
562 A new version of ZFS (version 13) has been merged to -HEAD.
563 This version has zpool attribute "listsnapshots" off by
564 default, which means "zfs list" does not show snapshots,
565 and is the same as Solaris behavior.
568 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
571 The uhci, ohci, ehci and slhci USB Host controller drivers have
572 been put into separate modules. If you load the usb module
573 separately through loader.conf you will need to load the
574 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
575 controller add the following to loader.conf:
581 The ABI used by the PMC toolset has changed. Please keep
582 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
586 atapci kernel module now includes only generic PCI ATA
587 driver. AHCI driver moved to ataahci kernel module.
588 All vendor-specific code moved into separate kernel modules:
589 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
590 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
591 atamarvell, atamicron, atanational, atanetcell, atanvidia,
592 atapromise, ataserverworks, atasiliconimage, atasis, atavia
595 The TTY subsystem of the kernel has been replaced by a new
596 implementation, which provides better scalability and an
597 improved driver model. Most common drivers have been migrated to
598 the new TTY subsystem, while others have not. The following
599 drivers have not yet been ported to the new TTY layer:
602 cy, digi, rc, rp, sio
608 ng_h4, ng_tty, ppp, sl, snp
610 Adding these drivers to your kernel configuration file shall
611 cause compilation to fail.
614 ntpd has been upgraded to 4.2.4p5.
617 OpenSSH has been upgraded to 5.1p1.
619 For many years, FreeBSD's version of OpenSSH preferred DSA
620 over RSA for host and user authentication keys. With this
621 upgrade, we've switched to the vendor's default of RSA over
622 DSA. This may cause upgraded clients to warn about unknown
623 host keys even for previously known hosts. Users should
624 follow the usual procedure for verifying host keys before
625 accepting the RSA key.
627 This can be circumvented by setting the "HostKeyAlgorithms"
628 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
631 Please note that the sequence of keys offered for
632 authentication has been changed as well. You may want to
633 specify IdentityFile in a different order to revert this
637 The sio(4) driver has been removed from the i386 and amd64
638 kernel configuration files. This means uart(4) is now the
639 default serial port driver on those platforms as well.
641 To prevent collisions with the sio(4) driver, the uart(4) driver
642 uses different names for its device nodes. This means the
643 onboard serial port will now most likely be called "ttyu0"
644 instead of "ttyd0". You may need to reconfigure applications to
645 use the new device names.
647 When using the serial port as a boot console, be sure to update
648 /boot/device.hints and /etc/ttys before booting the new kernel.
649 If you forget to do so, you can still manually specify the hints
650 at the loader prompt:
652 set hint.uart.0.at="isa"
653 set hint.uart.0.port="0x3F8"
654 set hint.uart.0.flags="0x10"
655 set hint.uart.0.irq="4"
659 The gpt(8) utility has been removed. Use gpart(8) to partition
663 The version that Linuxulator emulates was changed from 2.4.2
664 to 2.6.16. If you experience any problems with Linux binaries
665 please try to set sysctl compat.linux.osrelease to 2.4.2 and
666 if it fixes the problem contact emulation mailing list.
669 ISDN4BSD (I4B) was removed from the src tree. You may need to
670 update a your kernel configuration and remove relevant entries.
673 I have checked in code to support multiple routing tables.
674 See the man pages setfib(1) and setfib(2).
675 This is a hopefully backwards compatible version,
676 but to make use of it you need to compile your kernel
677 with options ROUTETABLES=2 (or more up to 16).
680 The 802.11 wireless support was redone to enable multi-bss
681 operation on devices that are capable. The underlying device
682 is no longer used directly but instead wlanX devices are
683 cloned with ifconfig. This requires changes to rc.conf files.
685 ifconfig_ath0="WPA DHCP"
688 ifconfig_wlan0="WPA DHCP"
689 see rc.conf(5) for more details. In addition, mergemaster of
690 /etc/rc.d is highly recommended. Simultaneous update of userland
691 and kernel wouldn't hurt either.
693 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
694 modules were merged into the base wlan module. All references
695 to these modules (e.g. in kernel config files) must be removed.
698 psm(4) has gained write(2) support in native operation level.
699 Arbitrary commands can be written to /dev/psm%d and status can
700 be read back from it. Therefore, an application is responsible
701 for status validation and error recovery. It is a no-op in
702 other operation levels.
705 Support for KSE threading has been removed from the kernel. To
706 run legacy applications linked against KSE libmap.conf may
707 be used. The following libmap.conf may be used to ensure
708 compatibility with any prior release:
710 libpthread.so.1 libthr.so.1
711 libpthread.so.2 libthr.so.2
712 libkse.so.3 libthr.so.3
715 The layout of struct vmspace has changed. This affects libkvm
716 and any executables that link against libkvm and use the
717 kvm_getprocs() function. In particular, but not exclusively,
718 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
719 The effects are minimal, but it's advisable to upgrade world
723 The latest em driver no longer has support in it for the
724 82575 adapter, this is now moved to the igb driver. The
725 split was done to make new features that are incompatible
726 with older hardware easier to do.
729 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
730 likewise the kernel option is now GEOM_LINUX_LVM.
733 The default NFS mount mode has changed from UDP to TCP for
734 increased reliability. If you rely on (insecurely) NFS
735 mounting across a firewall you may need to update your
739 Belatedly note the addition of m_collapse for compacting
743 The fts(3) structures have been changed to use adequate
744 integer types for their members and so to be able to cope
745 with huge file trees. The old fts(3) ABI is preserved
746 through symbol versioning in libc, so third-party binaries
747 using fts(3) should still work, although they will not take
748 advantage of the extended types. At the same time, some
749 third-party software might fail to build after this change
750 due to unportable assumptions made in its source code about
751 fts(3) structure members. Such software should be fixed
752 by its vendor or, in the worst case, in the ports tree.
753 FreeBSD_version 800015 marks this change for the unlikely
754 case that a portable fix is impossible.
757 To upgrade to -current after this date, you must be running
758 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
759 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
762 The ADAPTIVE_GIANT kernel option has been retired because its
763 functionality is the default now.
766 The AT keyboard emulation of sunkbd(4) has been turned on
767 by default. In order to make the special symbols of the Sun
768 keyboards driven by sunkbd(4) work under X these now have
769 to be configured the same way as Sun USB keyboards driven
770 by ukbd(4) (which also does AT keyboard emulation), f.e.:
772 Option "XkbLayout" "us"
773 Option "XkbRules" "xorg"
774 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
777 It has been decided that it is desirable to provide ABI
778 backwards compatibility to the FreeBSD 4/5/6 versions of the
779 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
780 broken with the introduction of PCI domain support (see the
781 20070930 entry). Unfortunately, this required the ABI of
782 PCIOCGETCONF to be broken again in order to be able to
783 provide backwards compatibility to the old version of that
784 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
785 again. As for prominent ports this affects neither pciutils
786 nor xorg-server this time, the hal port needs to be rebuilt
790 The misnamed kthread_create() and friends have been renamed
791 to kproc_create() etc. Many of the callers already
793 I will return kthread_create() and friends in a while
794 with implementations that actually create threads, not procs.
795 Renaming corresponds with version 800002.
801 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
802 WITHOUT_LIBTHR are set.
805 The PCI code has been made aware of PCI domains. This means that
806 the location strings as used by pciconf(8) etc are now in the
807 following format: pci<domain>:<bus>:<device>[:<function>]. It
808 also means that consumers of <sys/pciio.h> potentially need to
809 be recompiled; this includes the hal and xorg-server ports.
812 The caching daemon (cached) was renamed to nscd. nscd.conf
813 configuration file should be used instead of cached.conf and
814 nscd_enable, nscd_pidfile and nscd_flags options should be used
815 instead of cached_enable, cached_pidfile and cached_flags in
819 The getfacl(1) utility now prints owning user and group name
820 instead of owning uid and gid in the three line comment header.
821 This is the same behavior as getfacl(1) on Solaris and Linux.
824 The new IPsec code is now compiled in using the IPSEC option. The
825 IPSEC option now requires "device crypto" be defined in your kernel
826 configuration. The FAST_IPSEC kernel option is now deprecated.
829 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
830 note the changed syntax - keep state is now on by default. Also
831 note the fact that ftp-proxy(8) has been changed from bottom up and
832 has been moved from libexec to usr/sbin. Changes in the ALTQ
833 handling also affect users of IPFW's ALTQ capabilities.
836 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
837 only IPsec supported by FreeBSD. The new IPsec stack
838 supports both IPv4 and IPv6. The kernel option will change
839 after the code changes have settled in. For now the kernel
840 option IPSEC is deprecated and FAST_IPSEC is the only option, that
841 will change after some settling time.
844 The wicontrol(8) utility has been removed from the base system. wi(4)
845 cards should be configured using ifconfig(8), see the man page for more
849 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
850 instead of the nve(4) driver. Please update your configuration
854 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
855 database if it is missing or older than the aliases file. If
856 desired, set the new rc.conf option sendmail_rebuild_aliases
857 to "YES" to restore that functionality.
860 The IPv4 multicast socket code has been considerably modified, and
861 moved to the file sys/netinet/in_mcast.c. Initial support for the
862 RFC 3678 Source-Specific Multicast Socket API has been added to
863 the IPv4 network stack.
865 Strict multicast and broadcast reception is now the default for
866 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
867 has now been removed.
869 The RFC 1724 hack for interface selection has been removed; the use
870 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
871 been added to replace it. Consumers such as routed will soon be
872 updated to reflect this.
874 These changes affect users who are running routed(8) or rdisc(8)
875 from the FreeBSD base system on point-to-point or unnumbered
879 The net80211 layer has changed significantly and all wireless
880 drivers that depend on it need to be recompiled. Further these
881 changes require that any program that interacts with the wireless
882 support in the kernel be recompiled; this includes: ifconfig,
883 wpa_supplicant, hostapd, and wlanstats. Users must also, for
884 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
885 if they use modules for wireless support. These modules implement
886 scanning support for station and ap modes, respectively. Failure
887 to load the appropriate module before marking a wireless interface
888 up will result in a message to the console and the device not
892 The pam_nologin(8) module ceases to provide an authentication
893 function and starts providing an account management function.
894 Consequent changes to /etc/pam.d should be brought in using
895 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
896 need manual editing as follows. Locate this line (or similar):
898 auth required pam_nologin.so no_warn
900 and change it according to this example:
902 account required pam_nologin.so no_warn
904 That is, the first word needs to be changed from "auth" to
905 "account". The new line can be moved to the account section
906 within the file for clarity. Not updating pam.conf(5) files
907 will result in nologin(5) ignored by the respective services.
910 The ether_ioctl() function has been synchronized with ioctl(2)
911 and ifnet.if_ioctl. Due to that, the size of one of its arguments
912 has changed on 64-bit architectures. All kernel modules using
913 ether_ioctl() need to be rebuilt on such architectures.
916 Improved INCLUDE_CONFIG_FILE support has been introduced to the
917 config(8) utility. In order to take advantage of this new
918 functionality, you are expected to recompile and install
919 src/usr.sbin/config. If you don't rebuild config(8), and your
920 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
921 build will be broken because of a missing "kernconfstring"
925 Symbol versioning is enabled by default. To disable it, use
926 option WITHOUT_SYMVER. It is not advisable to attempt to
927 disable symbol versioning once it is enabled; your installworld
928 will break because a symbol version-less libc will get installed
929 before the install tools. As a result, the old install tools,
930 which previously had symbol dependencies to FBSD_1.0, will fail
931 because the freshly installed libc will not have them.
933 The default threading library (providing "libpthread") has been
934 changed to libthr. If you wish to have libkse as your default,
935 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
938 The ABI breakage in sendmail(8)'s libmilter has been repaired
939 so it is no longer necessary to recompile mail filters (aka,
940 milters). If you recompiled mail filters after the 20070408
941 note, it is not necessary to recompile them again.
944 The new trunk(4) driver has been renamed to lagg(4) as it better
945 reflects its purpose. ifconfig will need to be recompiled.
948 sendmail(8) has been updated to version 8.14.1. Mail filters
949 (aka, milters) compiled against the libmilter included in the
950 base operating system should be recompiled.
953 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
954 In order to use them one must agree to the respective LICENSE in
955 share/doc/legal and define legal.intel_<name>.license_ack=1 via
956 loader.conf(5) or kenv(1). Make sure to deinstall the now
957 deprecated modules from the respective firmware ports.
960 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
961 were removed from FreeBSD's libc. These originally came from INRIA
962 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
963 deprecated in previous releases.
964 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
965 replace it as a more portable (and re-entrant) API.
968 To support interrupt filtering a modification to the newbus API
969 has occurred, ABI was broken and __FreeBSD_version was bumped
970 to 700031. Please make sure that your kernel and modules are in
972 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
975 The IPv6 multicast forwarding code may now be loaded into GENERIC
976 kernels by loading the ip_mroute.ko module. This is built into the
977 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
978 set; see src.conf(5) for more information.
981 The output of netstat -r has changed. Without -n, we now only
982 print a "network name" without the prefix length if the network
983 address and mask exactly match a Class A/B/C network, and an entry
984 exists in the nsswitch "networks" map.
985 With -n, we print the full unabbreviated CIDR network prefix in
986 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
987 This change is in preparation for changes such as equal-cost
988 multipath, and to more generally assist operational deployment
989 of FreeBSD as a modern IPv4 router.
992 PIM has been turned on by default in the IPv4 multicast
993 routing code. The kernel option 'PIM' has now been removed.
994 PIM is now built by default if option 'MROUTING' is specified.
995 It may now be loaded into GENERIC kernels by loading the
999 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
1000 has been removed. Its functionality may be achieved by explicitly
1001 configuring gif(4) interfaces and using the 'phyint' keyword in
1003 XORP does not support source-routed IPv4 multicast tunnels nor the
1004 integrated IPIP tunneling, therefore it is not affected by this
1005 change. The __FreeBSD_version macro has been bumped to 700030.
1008 Support for PCI Message Signalled Interrupts has been
1009 re-enabled in the bge driver, only for those chips which are
1010 believed to support it properly. If there are any problems,
1011 MSI can be disabled completely by setting the
1012 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
1016 Support for PCI Message Signalled Interrupts has been
1017 disabled again in the bge driver. Many revisions of the
1018 hardware fail to support it properly. Support can be
1019 re-enabled by removing the #define of BGE_DISABLE_MSI in
1020 "src/sys/dev/bge/if_bge.c".
1023 Support for PCI Message Signalled Interrupts has been added
1024 to the bge driver. If there are any problems, MSI can be
1025 disabled completely by setting the 'hw.pci.enable_msi' and
1026 'hw.pci.enable_msix' tunables to 0 in the loader.
1029 The removal of several facets of the experimental Threading
1030 system from the kernel means that the proc and thread structures
1031 have changed quite a bit. I suggest all kernel modules that might
1032 reference these structures be recompiled.. Especially the
1036 Sound infrastructure has been updated with various fixes and
1037 improvements. Most of the changes are pretty much transparent,
1038 with exceptions of followings:
1039 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1040 moved to their own dev sysctl nodes, for example:
1041 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1042 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1043 own chardev in the form of "dsp%d.<function>%d", where <function>
1044 is p = playback, r = record and v = virtual, respectively. Users
1045 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1046 This does not affect those who are using "/dev/dsp".
1049 geom(4)'s gmirror(8) class metadata structure has been
1050 rev'd from v3 to v4. If you update across this point and
1051 your metadata is converted for you, you will not be easily
1052 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1053 kernel module will be unable to read the v4 metadata. You
1054 can resolve this by doing from the loader(8) prompt:
1056 set vfs.root.mountfrom="ufs:/dev/XXX"
1058 where XXX is the root slice of one of the disks that composed
1059 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1060 the array the same way you built it originally.
1063 The following binaries have been disconnected from the build:
1064 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1065 and mount_std. The functionality of these programs has been
1066 moved into the mount program. For example, to mount a devfs
1067 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1068 This does not affect entries in /etc/fstab, since entries in
1069 /etc/fstab are always processed with "mount -t fstype".
1072 Support for PCI Message Signalled Interrupts on i386 and amd64
1073 has been added to the kernel and various drivers will soon be
1074 updated to use MSI when it is available. If there are any problems,
1075 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1076 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1079 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1080 The lockmgr object layout has been changed as a result of having
1081 a lock_object embedded in it. As a consequence all file system
1082 kernel modules must be re-compiled. The mutex profiling man page
1083 has not yet been updated to reflect this change.
1086 KSE in the kernel has now been made optional and turned on by
1087 default. Use 'nooption KSE' in your kernel config to turn it
1088 off. All kernel modules *must* be recompiled after this change.
1089 There-after, modules from a KSE kernel should be compatible with
1090 modules from a NOKSE kernel due to the temporary padding fields
1091 added to 'struct proc'.
1094 mrouted and its utilities have been removed from the base system.
1097 Some ioctl(2) command codes have changed. Full backward ABI
1098 compatibility is provided if the "options COMPAT_FREEBSD6" is
1099 present in the kernel configuration file. Make sure to add
1100 this option to your kernel config file, or recompile X.Org
1101 and the rest of ports; otherwise they may refuse to work.
1104 tcpslice has been removed from the base system.
1107 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1108 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1109 systat needs to be rebuilt.
1112 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1115 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1116 for IPFIREWALL_FORWARD is now as it was before when it was first
1117 committed and for years after. The behaviour is now ON.
1120 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1121 Now it can decrypt files created from different architectures.
1122 Unfortunately, it is no longer able to decrypt a cipher text
1123 generated with an older version on 64 bit architectures.
1124 If you have such a file, you need old utility to decrypt it.
1127 The interface version of the i4b kernel part has changed. So
1128 after updating the kernel sources and compiling a new kernel,
1129 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1130 be rebuilt, and vice versa.
1133 The XBOX kernel now defaults to the nfe(4) driver instead of
1134 the nve(4) driver. Please update your configuration
1138 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1139 PCnet family of NICs has been removed. The new le(4) driver serves
1140 as an equivalent but cross-platform replacement with the pcn(4)
1141 driver still providing performance-optimized support for the subset
1142 of AMD Am79C971 PCnet-FAST and greater chips as before.
1145 The machdep.* sysctls and the adjkerntz utility have been
1146 modified a bit. The new adjkerntz utility uses the new
1147 sysctl names and sysctlbyname() calls, so it may be impossible
1148 to run an old /sbin/adjkerntz utility in single-user mode
1149 with a new kernel. Replace the `adjkerntz -i' step before
1150 `make installworld' with:
1152 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1154 and proceed as usual with the rest of the installworld-stage
1155 steps. Otherwise, you risk installing binaries with their
1156 timestamp set several hours in the future, especially if
1157 you are running with local time set to GMT+X hours.
1160 The ip6fw utility has been removed. The behavior provided by
1161 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1162 have been updated to deal with it. There are some rules that
1163 might not migrate cleanly. Use rc.firewall6 as a template to
1167 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1168 attachments have been removed. Make sure to configure scc(4)
1169 on sparc64. Note also that by default puc(4) will use uart(4)
1170 and not sio(4) for serial ports because interrupt handling has
1171 been optimized for multi-port serial cards and only uart(4)
1172 implements the interface to support it.
1175 The scc(4) driver replaces puc(4) for Serial Communications
1176 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1177 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1178 configuration to make sure that the serial ports remain
1182 Most world/kernel related NO_* build options changed names.
1183 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1184 after FreeBSD ports) and should be set in /etc/src.conf
1185 (the src.conf(5) manpage is provided). Full backwards
1186 compatibility is maintained for the time being though it's
1187 highly recommended to start moving old options out of the
1188 system-wide /etc/make.conf file into the new /etc/src.conf
1189 while also properly renaming them. More conversions will
1190 likely follow. Posting to current@:
1192 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1195 The NETSMBCRYPTO kernel option has been retired because its
1196 functionality is always included in NETSMB and smbfs.ko now.
1199 The TDFX_LINUX kernel option was retired and replaced by the
1200 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1201 kernel module. Loading it alone should suffice to get 3dfx support
1202 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1206 The 'audit' group was added to support the new auditing functionality
1207 in the base system. Be sure to follow the directions for updating,
1208 including the requirement to run mergemaster -p.
1211 The kernel ABI to file system modules was changed on i386.
1212 Please make sure that your kernel and modules are in sync.
1215 This actually occured some time ago, but installing the kernel
1216 now also installs a bunch of symbol files for the kernel modules.
1217 This increases the size of /boot/kernel to about 67Mbytes. You
1218 will need twice this if you will eventually back this up to kernel.old
1219 on your next install.
1220 If you have a shortage of room in your root partition, you should add
1221 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1222 to your /etc/make.conf.
1225 libc's malloc implementation has been replaced. This change has the
1226 potential to uncover application bugs that previously went unnoticed.
1227 See the malloc(3) manual page for more details.
1230 The generic netgraph(4) cookie has been changed. If you upgrade
1231 kernel passing this point, you also need to upgrade userland
1232 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1235 si(4)'s device files now contain the unit number.
1236 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1239 The kernel ABI was mostly destroyed due to a change in the size
1240 of struct lock_object which is nested in other structures such
1241 as mutexes which are nested in all sorts of other structures.
1242 Make sure your kernel and modules are in sync.
1245 The page coloring algorithm in the VM subsystem was converted
1246 from tuning with kernel options to autotuning. Please remove
1247 any PQ_* option except PQ_NOOPT from your kernel config.
1250 The net80211-related tools in the tools/tools/ath directory
1251 have been moved to tools/tools/net80211 and renamed with a
1252 "wlan" prefix. Scripts that use them should be adjusted
1256 Scripts in the local_startup directories (as defined in
1257 /etc/defaults/rc.conf) that have the new rc.d semantics will
1258 now be run as part of the base system rcorder. If there are
1259 errors or problems with one of these local scripts, it could
1260 cause boot problems. If you encounter such problems, boot in
1261 single user mode, remove that script from the */rc.d directory.
1262 Please report the problem to the port's maintainer, and the
1263 freebsd-ports@freebsd.org mailing list.
1266 The nodev mount option was deprecated in RELENG_6 (where it
1267 was a no-op), and is now unsupported. If you have nodev or dev listed
1268 in /etc/fstab, remove it, otherwise it will result in a mount error.
1271 ABI between ipfw(4) and ipfw(8) has been changed. You need
1272 to rebuild ipfw(8) when rebuilding kernel.
1275 rp(4)'s device files now contain the unit number.
1276 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1279 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1280 Its /etc/rc.conf.d configuration file has been `ppp' from
1281 the beginning, and hence there is no need to touch it.
1284 Now most modules get their build-time options from the kernel
1285 configuration file. A few modules still have fixed options
1286 due to their non-conformant implementation, but they will be
1287 corrected eventually. You may need to review the options of
1288 the modules in use, explicitly specify the non-default options
1289 in the kernel configuration file, and rebuild the kernel and
1293 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1294 to turn polling(4) on your interfaces.
1297 The old bridge(4) implementation was retired. The new
1298 if_bridge(4) serves as a full functional replacement.
1301 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1302 to conform to POSIX-2001. This change broke an ABI
1303 compatibility on 64 bit architecture. You have to recompile
1304 userland programs that use getaddrinfo(3) on 64 bit
1308 RELENG_6 branched here.
1311 The pccard_ifconfig rc.conf variable has been removed and a new
1312 variable, ifconfig_DEFAULT has been introduced. Unlike
1313 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1314 do not have ifconfig_ifn entries rather than just those in
1315 removable_interfaces.
1318 Some previous versions of PAM have permitted the use of
1319 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1320 to third party PAM modules in /usr/local/lib. A change has been
1321 made to require the use of absolute paths in order to avoid
1322 ambiguity and dependence on library path configuration, which may
1323 affect existing configurations.
1326 Major changes to network interface API. All drivers must be
1327 recompiled. Drivers not in the base system will need to be
1328 updated to the new APIs.
1331 Changes were made to kinfo_proc in sys/user.h. Please recompile
1332 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1333 will not behave correctly.
1335 The API and ABI for hwpmc(4) have changed with the addition
1336 of sampling support. Please recompile lib/libpmc(3) and
1337 usr.sbin/{pmcstat,pmccontrol}.
1340 The OpenBSD dhclient was imported in place of the ISC dhclient
1341 and the network interface configuration scripts were updated
1342 accordingly. If you use DHCP to configure your interfaces, you
1343 must now run devd. Also, DNS updating was lost so you will need
1344 to find a workaround if you use this feature.
1346 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1347 sure to run mergemaster -p (like you are supposed to do every time
1351 if_bridge was added to the tree. This has changed struct ifnet.
1352 Please recompile userland and all network related modules.
1355 The n_net of a struct netent was changed to an uint32_t, and
1356 1st argument of getnetbyaddr() was changed to an uint32_t, to
1357 conform to POSIX-2001. These changes broke an ABI
1358 compatibility on 64 bit architecture. With these changes,
1359 shlib major of libpcap was bumped. You have to recompile
1360 userland programs that use getnetbyaddr(3), getnetbyname(3),
1361 getnetent(3) and/or libpcap on 64 bit architecture.
1364 Kernel parsing of extra options on '#!' first lines of shell
1365 scripts has changed. Lines with multiple options likely will
1366 fail after this date. For full details, please see
1367 http://people.freebsd.org/~gad/Updating-20050528.txt
1370 The packet filter (pf) code has been updated to OpenBSD 3.7
1371 Please note the changed anchor syntax and the fact that
1372 authpf(8) now needs a mounted fdescfs(5) to function.
1375 The NO_MIXED_MODE kernel option has been removed from the i386
1376 amd64 platforms as its use has been superceded by the new local
1377 APIC timer code. Any kernel config files containing this option
1381 The on-disk format of LC_CTYPE files was changed to be machine
1382 independent. Please make sure NOT to use NO_CLEAN buildworld
1383 when crossing this point. Crossing this point also requires
1384 recompile or reinstall of all locale depended packages.
1387 The ifi_epoch member of struct if_data has been changed to
1388 contain the uptime at which the interface was created or the
1389 statistics zeroed rather then the wall clock time because
1390 wallclock time may go backwards. This should have no impact
1391 unless an snmp implementation is using this value (I know of
1392 none at this point.)
1395 The acpi_perf and acpi_throttle drivers are now part of the
1396 acpi(4) main module. They are no longer built separately.
1399 The layout of struct image_params has changed. You have to
1400 recompile all compatibility modules (linux, svr4, etc) for use
1401 with the new kernel.
1404 The p4tcc driver has been merged into cpufreq(4). This makes
1405 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1406 compile in "device cpufreq" to restore this functionality.
1409 The responsibility of recomputing the file system summary of
1410 a SoftUpdates-enabled dirty volume has been transferred to the
1411 background fsck. A rebuild of fsck(8) utility is recommended
1412 if you have updated the kernel.
1414 To get the old behavior (recompute file system summary at mount
1415 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1416 mounting the new volume.
1419 The cpufreq import is complete. As part of this, the sysctls for
1420 acpi(4) throttling have been removed. The power_profile script
1421 has been updated, so you can use performance/economy_cpu_freq in
1422 rc.conf(5) to set AC on/offline cpu frequencies.
1425 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1426 requires recompiling libnetgraph and userland netgraph utilities.
1429 Support for abbreviated forms of a number of ipfw options is
1430 now deprecated. Warnings are printed to stderr indicating the
1431 correct full form when a match occurs. Some abbreviations may
1432 be supported at a later date based on user feedback. To be
1433 considered for support, abbreviations must be in use prior to
1434 this commit and unlikely to be confused with current key words.
1437 By a popular demand, a lot of NOFOO options were renamed
1438 to NO_FOO (see bsd.compat.mk for a full list). The old
1439 spellings are still supported, but will cause annoying
1440 warnings on stderr. Make sure you upgrade properly (see
1441 the COMMON ITEMS: section later in this file).
1444 Auto-loading of ancillary wlan modules such as wlan_wep has
1445 been temporarily disabled; you need to statically configure
1446 the modules you need into your kernel or explicitly load them
1447 prior to use. Specifically, if you intend to use WEP encryption
1448 with an 802.11 device load/configure wlan_wep; if you want to
1449 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1450 and wlan_xauth as required.
1453 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1454 (``enable lqr''), older versions would revert to LCP ECHO mode on
1455 negotiation failure. Now, ``enable echo'' is required for this
1456 behaviour. The ppp version number has been bumped to 3.4.2 to
1460 The wlan support has been updated to split the crypto support
1461 into separate modules. For static WEP you must configure the
1462 wlan_wep module in your system or build and install the module
1463 in place where it can be loaded (the kernel will auto-load
1464 the module when a wep key is configured).
1467 The ath driver has been updated to split the tx rate control
1468 algorithm into a separate module. You need to include either
1469 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1472 Support for systems with an 80386 CPU has been removed. Please
1473 use FreeBSD 5.x or earlier on systems with an 80386.
1476 We have had a hack which would mount the root filesystem
1477 R/W if the device were named 'md*'. As part of the vnode
1478 work I'm doing I have had to remove this hack. People
1479 building systems which use preloaded MD root filesystems
1480 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1481 their /etc/rc scripts.
1484 FreeBSD 5.3 shipped here.
1487 The size of struct tcpcb has changed again due to the removal
1488 of RFC1644 T/TCP. You have to recompile userland programs that
1489 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1492 The size of struct tcpcb has changed. You have to recompile
1493 userland programs that read kmem for tcp sockets directly
1494 (netstat, sockstat, etc.)
1497 RELENG_5 branched here. For older entries, please see updating
1498 in the RELENG_5 branch.
1504 Avoid using make -j when upgrading. From time to time in the
1505 past there have been problems using -j with buildworld and/or
1506 installworld. This is especially true when upgrading between
1507 "distant" versions (eg one that cross a major release boundary
1508 or several minor releases, or when several months have passed
1509 on the -current branch).
1511 Sometimes, obscure build problems are the result of environment
1512 poisoning. This can happen because the make utility reads its
1513 environment when searching for values for global variables.
1514 To run your build attempts in an "environmental clean room",
1515 prefix all make commands with 'env -i '. See the env(1) manual
1516 page for more details.
1518 When upgrading from one major version to another it is generally
1519 best to upgrade to the latest code in the currently installed branch
1520 first, then do an upgrade to the new branch. This is the best-tested
1521 upgrade path, and has the highest probability of being successful.
1522 Please try this approach before reporting problems with a major
1527 If you are updating from a prior version of FreeBSD (even one just
1528 a few days old), you should follow this procedure. It is the most
1529 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1531 make kernel-toolchain
1532 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1533 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1535 To test a kernel once
1536 ---------------------
1537 If you just want to boot a kernel once (because you are not sure
1538 if it works, or if you want to boot a known bad kernel to provide
1539 debugging information) run
1540 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1541 nextboot -k testkernel
1543 To just build a kernel when you know that it won't mess you up
1544 --------------------------------------------------------------
1545 This assumes you are already running a 5.X system. Replace
1546 ${arch} with the architecture of your machine (e.g. "i386",
1547 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1549 cd src/sys/${arch}/conf
1550 config KERNEL_NAME_HERE
1551 cd ../compile/KERNEL_NAME_HERE
1556 If this fails, go to the "To build a kernel" section.
1558 To rebuild everything and install it on the current system.
1559 -----------------------------------------------------------
1560 # Note: sometimes if you are running current you gotta do more than
1561 # is listed here if you are upgrading from a really old current.
1563 <make sure you have good level 0 dumps>
1565 make kernel KERNCONF=YOUR_KERNEL_HERE
1567 <reboot in single user> [3]
1575 To cross-install current onto a separate partition
1576 --------------------------------------------------
1577 # In this approach we use a separate partition to hold
1578 # current's root, 'usr', and 'var' directories. A partition
1579 # holding "/", "/usr" and "/var" should be about 2GB in
1582 <make sure you have good level 0 dumps>
1585 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1586 <maybe newfs current's root partition>
1587 <mount current's root partition on directory ${CURRENT_ROOT}>
1588 make installworld DESTDIR=${CURRENT_ROOT}
1589 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1590 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1591 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1592 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1593 <reboot into current>
1594 <do a "native" rebuild/install as described in the previous section>
1595 <maybe install compatibility libraries from ports/misc/compat*>
1599 To upgrade in-place from 5.x-stable to current
1600 ----------------------------------------------
1601 <make sure you have good level 0 dumps>
1603 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1605 <reboot in single user> [3]
1612 Make sure that you've read the UPDATING file to understand the
1613 tweaks to various things you need. At this point in the life
1614 cycle of current, things change often and you are on your own
1615 to cope. The defaults can also change, so please read ALL of
1616 the UPDATING entries.
1618 Also, if you are tracking -current, you must be subscribed to
1619 freebsd-current@freebsd.org. Make sure that before you update
1620 your sources that you have read and understood all the recent
1621 messages there. If in doubt, please track -stable which has
1622 much fewer pitfalls.
1624 [1] If you have third party modules, such as vmware, you
1625 should disable them at this point so they don't crash your
1628 [3] From the bootblocks, boot -s, and then do
1633 adjkerntz -i # if CMOS is wall time
1634 Also, when doing a major release upgrade, it is required that
1635 you boot into single user mode to do the installworld.
1637 [4] Note: This step is non-optional. Failure to do this step
1638 can result in a significant reduction in the functionality of the
1639 system. Attempting to do it by hand is not recommended and those
1640 that pursue this avenue should read this file carefully, as well
1641 as the archives of freebsd-current and freebsd-hackers mailing lists
1642 for potential gotchas.
1644 [5] Usually this step is a noop. However, from time to time
1645 you may need to do this if you get unknown user in the following
1646 step. It never hurts to do it all the time. You may need to
1647 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1648 install) after the buildworld before this step if you last updated
1649 from current before 20020224 or from -stable before 20020408.
1651 [8] In order to have a kernel that can run the 4.x binaries
1652 needed to do an installworld, you must include the COMPAT_FREEBSD4
1653 option in your kernel. Failure to do so may leave you with a system
1654 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1655 is required to run the 5.x binaries on more recent kernels.
1657 Make sure that you merge any new devices from GENERIC since the
1658 last time you updated your kernel config file.
1660 [9] When checking out sources, you must include the -P flag to have
1661 cvs prune empty directories.
1663 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1664 "?=" instead of the "=" assignment operator, so that buildworld can
1665 override the CPUTYPE if it needs to.
1667 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1668 not on the command line, or in /etc/make.conf. buildworld will
1669 warn if it is improperly defined.
1672 This file contains a list, in reverse chronological order, of major
1673 breakages in tracking -current. Not all things will be listed here,
1674 and it only starts on October 16, 2004. Updating files can found in
1675 previous releases if your system is older than this.
1677 Copyright information:
1679 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1681 Redistribution, publication, translation and use, with or without
1682 modification, in full or in part, in any form or format of this
1683 document are permitted without further permission from the author.
1685 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1686 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1687 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1688 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1689 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1690 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1691 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1692 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1693 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1694 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1695 POSSIBILITY OF SUCH DAMAGE.
1697 If you find this document useful, and you want to, you may buy the
1700 Contact Warner Losh if you have any questions about your use of