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.
19 802.11s D3.03 support was committed. This is incompatible with
20 the previous code, which was based on D3.0.
23 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
24 mount(8) and -a option for df(1) to see them.
27 Remove the option STOP_NMI. The default action is now to use NMI
28 only for KDB via the newly introduced function stop_cpus_hard()
29 and maintain stop_cpus() to just use a normal IPI_STOP on ia32
36 Bump the shared library version numbers for all libraries that
37 do not use symbol versioning as part of the 8.0-RELEASE cycle.
38 Bump __FreeBSD_version to 800105.
41 Due to changes in the implementation of virtual network stack
42 support, all network-related kernel modules must be recompiled.
43 As this change breaks the ABI, bump __FreeBSD_version to 800104.
46 The TOE interface to the TCP syncache has been modified to remove struct
47 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
48 cxgb driver is the only TOE consumer affected by this change, and needs
49 to be recompiled along with the kernel. As this change breaks the ABI,
50 bump __FreeBSD_version to 800103.
53 Padding has been added to struct tcpcb, sackhint and tcpstat in
54 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
55 maintainig the ABI. However, this change breaks the ABI, so bump
56 __FreeBSD_version to 800102. User space tools that rely on the size of
57 any of these structs (e.g. sockstat) need to be recompiled.
60 The NFS_LEGACYRPC option has been removed along with the old
61 kernel RPC implementation that this option selected. Kernel
62 configurations may need to be adjusted.
65 The network interface device nodes at /dev/net/<interface> have
66 been removed. All ioctl operations can be performed the normal
67 way using routing sockets. The kqueue functionality can
68 generally be replaced with routing sockets.
71 The documentation from the FreeBSD Documentation Project
72 (Handbook, FAQ, etc.) is now installed via packages by
73 sysinstall(8) and under the /usr/local/share/doc/freebsd
74 directory instead of /usr/share/doc.
77 The ABI of various structures related to the SYSV IPC API have
78 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
79 kernel options now all require COMPAT_FREEBSD7.
80 Bump __FreeBSD_version to 800100.
83 Layout of struct vnet has changed as routing related variables
84 were moved to their own Vimage module. Modules need to be
85 recompiled. Bump __FreeBSD_version to 800099.
88 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
89 and 1024 respectively. As long as no more than 16 groups per
90 process are used, no changes should be visible. When more
91 than 16 groups are used, old binaries may fail if they call
92 getgroups() or getgrouplist() with statically sized storage.
93 Recompiling will work around this, but applications should be
94 modified to use dynamically allocated storage for group arrays
95 as POSIX.1-2008 does not cap an implementation's number of
96 supported groups at NGROUPS_MAX+1 as previous versions did.
98 NFS and portalfs mounts may also be affected as the list of
99 groups is truncated to 16. Users of NFS who use more than 16
100 groups, should take care that negative group permissions are not
101 used on the exported file systems as they will not be reliable
102 unless a GSSAPI based authentication method is used.
105 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
106 This option compiles in the support for adaptive spinning for lockmgrs
107 which want to enable it. The lockinit() function now accepts the
108 flag LK_ADAPTIVE in order to make the lock object subject to
109 adaptive spinning when both held in write and read mode.
112 The layout of the structure returned by IEEE80211_IOC_STA_INFO
113 has changed. User applications that use this ioctl need to be
117 The layout of struct thread has changed. Kernel and modules
121 The layout of structs ifnet, domain, protosw and vnet_net has
122 changed. Kernel modules need to be rebuilt.
123 Bump __FreeBSD_version to 800097.
126 window(1) has been removed from the base system. It can now be
127 installed from ports. The port is called misc/window.
130 The way we are storing and accessing `routing table' entries
131 has changed. Programs reading the FIB, like netstat, need to
135 A new netisr implementation has been added for FreeBSD 8. Network
136 file system modules, such as igmp, ipdivert, and others, should be
138 Bump __FreeBSD_version to 800096.
141 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
145 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
146 Bump __FreeBSD_version to 800094.
149 Add mnt_xflag field to 'struct mount'. File system modules
151 Bump __FreeBSD_version to 800093.
154 The compiling option ADAPTIVE_SX has been retired while it has been
155 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
156 The KPI for sx_init_flags() changes as accepting flags:
157 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
158 has been introduced in order to handle the reversed logic.
159 Bump __FreeBSD_version to 800092.
162 Add support for hierarchical jails. Remove global securelevel.
163 Bump __FreeBSD_version to 800091.
166 The layout of struct vnet_net has changed, therefore modules
168 Bump __FreeBSD_version to 800090.
171 The newly imported zic(8) produces a new format in the
172 output. Please run tzsetup(8) to install the newly created
173 data to /etc/localtime.
176 The sysctl tree for the usb stack has renamed from hw.usb2.* to
177 hw.usb.* and is now consistent again with previous releases.
180 802.11 monitor mode support was revised and driver api's
181 were changed. Drivers dependent on net80211 now support
182 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
183 user-visible data structures were changed but applications
184 that use DLT_IEEE802_11 may require changes.
185 Bump __FreeBSD_version to 800088.
188 The layout of the following structs has changed: sysctl_oid,
189 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
190 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
191 panics may be experienced. World rebuild is required for
192 correctly checking networking state from userland.
193 Bump __FreeBSD_version to 800085.
196 MLDv2 and Source-Specific Multicast (SSM) have been merged
197 to the IPv6 stack. VIMAGE hooks are in but not yet used.
198 The implementation of SSM within FreeBSD's IPv6 stack closely
199 follows the IPv4 implementation.
201 For kernel developers:
203 * The most important changes are that the ip6_output() and
204 ip6_input() paths no longer take the IN6_MULTI_LOCK,
205 and this lock has been downgraded to a non-recursive mutex.
207 * As with the changes to the IPv4 stack to support SSM, filtering
208 of inbound multicast traffic must now be performed by transport
209 protocols within the IPv6 stack. This does not apply to TCP and
210 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
212 * The KPIs used by IPv6 multicast are similar to those used by
213 the IPv4 stack, with the following differences:
214 * im6o_mc_filter() is analogous to imo_multicast_filter().
215 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
216 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
217 * IN6_LOOKUP_MULTI() has been deprecated and removed.
218 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
219 for MLDv1 have an additional 'timer' argument which is used to
220 jitter the initial membership report for the solicited-node
221 multicast membership on-link.
222 * This is not strictly needed for MLDv2, which already jitters
223 its report transmissions. However, the 'timer' argument is
224 preserved in case MLDv1 is active on the interface.
226 * The KAME linked-list based IPv6 membership implementation has
227 been refactored to use a vector similar to that used by the IPv4
229 Code which maintains a list of its own multicast memberships
230 internally, e.g. carp, has been updated to reflect the new
233 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
234 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
235 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
236 implementation constraint which needs to be addressed in HEAD.
238 For application developers:
240 * The changes are broadly similar to those made for the IPv4
243 * The use of IPv4 and IPv6 multicast socket options on the same
244 socket, using mapped addresses, HAS NOT been tested or supported.
246 * There are a number of issues with the implementation of various
247 IPv6 multicast APIs which need to be resolved in the API surface
248 before the implementation is fully compatible with KAME userland
249 use, and these are mostly to do with interface index treatment.
251 * The literature available discusses the use of either the delta / ASM
252 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
253 using setsourcefilter(3)/getsourcefilter(3). For more information
254 please refer to RFC 3768, 'Socket Interface Extensions for
255 Multicast Source Filters'.
257 * Applications which use the published RFC 3678 APIs should be fine.
259 For systems administrators:
261 * The mtest(8) utility has been refactored to support IPv6, in
262 addition to IPv4. Interface addresses are no longer accepted
263 as arguments, their names must be used instead. The utility
264 will map the interface name to its first IPv4 address as
265 returned by getifaddrs(3).
267 * The ifmcstat(8) utility has also been updated to print the MLDv2
268 endpoint state and source filter lists via sysctl(3).
270 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
271 loopback of IPv6 multicast datagrams by default; it defaults to 1
272 to preserve the existing behaviour. Disabling multicast loopback is
273 recommended for optimal system performance.
275 * The IPv6 MROUTING code has been changed to examine this sysctl
276 instead of attempting to perform a group lookup before looping
277 back forwarded datagrams.
279 Bump __FreeBSD_version to 800084.
282 Implement low-level Bluetooth HCI API.
283 Bump __FreeBSD_version to 800083.
286 The layout of struct malloc_type, used by modules to register new
287 memory allocation types, has changed. Most modules will need to
288 be rebuilt or panics may be experienced.
289 Bump __FreeBSD_version to 800081.
292 Anticipate overflowing inp_flags - add inp_flags2.
293 This changes most offsets in inpcb, so checking v4 connection
294 state will require a world rebuild.
295 Bump __FreeBSD_version to 800080.
298 Add an llentry to struct route and struct route_in6. Modules
299 embedding a struct route will need to be recompiled.
300 Bump __FreeBSD_version to 800079.
303 The size of rt_metrics_lite and by extension rtentry has changed.
304 Networking administration apps will need to be recompiled.
305 The route command now supports show as an alias for get, weighting
306 of routes, sticky and nostick flags to alter the behavior of stateful
308 Bump __FreeBSD_version to 800078.
311 Do not use Giant for kbdmux(4) locking. This is wrong and
312 apparently causing more problems than it solves. This will
313 re-open the issue where interrupt handlers may race with
314 kbdmux(4) in polling mode. Typical symptoms include (but
315 not limited to) duplicated and/or missing characters when
316 low level console functions (such as gets) are used while
317 interrupts are enabled (for example geli password prompt,
318 mountroot prompt etc.). Disabling kbdmux(4) may help.
321 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
322 kernel modules referencing any of the above need to be recompiled.
323 Bump __FreeBSD_version to 800075.
326 GEOM_PART has become the default partition slicer for storage devices,
327 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
328 introduces some changes:
330 MSDOS/EBR: the devices created from MSDOS extended partition entries
331 (EBR) can be named differently than with GEOM_MBR and are now symlinks
332 to devices with offset-based names. fstabs may need to be modified.
334 BSD: the "geometry does not match label" warning is harmless in most
335 cases but it points to problems in file system misalignment with
336 disk geometry. The "c" partition is now implicit, covers the whole
337 top-level drive and cannot be (mis)used by users.
339 General: Kernel dumps are now not allowed to be written to devices
340 whose partition types indicate they are meant to be used for file
341 systems (or, in case of MSDOS partitions, as something else than
344 Most of these changes date approximately from 200812.
347 The uscanner(4) driver has been removed from the kernel. This follows
348 Linux removing theirs in 2.6 and making libusb the default interface
352 The multicast forwarding code has been cleaned up. netstat(1)
353 only relies on KVM now for printing bandwidth upcall meters.
354 The IPv4 and IPv6 modules are split into ip_mroute_mod and
355 ip6_mroute_mod respectively. The config(5) options for statically
356 compiling this code remain the same, i.e. 'options MROUTING'.
359 Support for the IFF_NEEDSGIANT network interface flag has been
360 removed, which means that non-MPSAFE network device drivers are no
361 longer supported. In particular, if_ar, if_sr, and network device
362 drivers from the old (legacy) USB stack can no longer be built or
366 POSIX.1 Native Language Support (NLS) has been enabled in libc and
367 a bunch of new language catalog files have also been added.
368 This means that some common libc messages are now localized and
369 they depend on the LC_MESSAGES environmental variable.
372 The k8temp(4) driver has been renamed to amdtemp(4) since
373 support for K10 and K11 CPU families was added.
376 IGMPv3 and Source-Specific Multicast (SSM) have been merged
377 to the IPv4 stack. VIMAGE hooks are in but not yet used.
379 For kernel developers, the most important changes are that the
380 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
381 and this lock has been downgraded to a non-recursive mutex.
383 Transport protocols (UDP, Raw IP) are now responsible for filtering
384 inbound multicast traffic according to group membership and source
385 filters. The imo_multicast_filter() KPI exists for this purpose.
386 Transports which do not use multicast (SCTP, TCP) already reject
387 multicast by default. Forwarding and receive performance may improve
388 as a mutex acquisition is no longer needed in the ip_input()
389 low-level input path. in_addmulti() and in_delmulti() are shimmed
390 to new KPIs which exist to support SSM in-kernel.
392 For application developers, it is recommended that loopback of
393 multicast datagrams be disabled for best performance, as this
394 will still cause the lock to be taken for each looped-back
395 datagram transmission. The net.inet.ip.mcast.loop sysctl may
396 be tuned to 0 to disable loopback by default; it defaults to 1
397 to preserve the existing behaviour.
399 For systems administrators, to obtain best performance with
400 multicast reception and multiple groups, it is always recommended
401 that a card with a suitably precise hash filter is used. Hash
402 collisions will still result in the lock being taken within the
403 transport protocol input path to check group membership.
405 If deploying FreeBSD in an environment with IGMP snooping switches,
406 it is recommended that the net.inet.igmp.sendlocal sysctl remain
407 enabled; this forces 224.0.0.0/24 group membership to be announced
410 The size of 'struct igmpstat' has changed; netstat needs to be
411 recompiled to reflect this.
412 Bump __FreeBSD_version to 800070.
415 libusb20.so.1 is now installed as libusb.so.1 and the ports system
416 updated to use it. This requires a buildworld/installworld in order to
417 update the library and dependencies (usbconfig, etc). Its advisable to
418 rebuild all ports which uses libusb. More specific directions are given
419 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
420 libusb are no longer required and can be removed.
423 A workaround is committed to allow the creation of System V shared
424 memory segment of size > 2 GB on the 64-bit architectures.
425 Due to a limitation of the existing ABI, the shm_segsz member
426 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
427 wrong for large segments. Note that limits must be explicitly
428 raised to allow such segments to be created.
431 The layout of struct ifnet has changed, requiring a rebuild of all
432 network device driver modules.
435 The /dev handling for the new USB stack has changed, a
436 buildworld/installworld is required for libusb20.
439 The new USB2 stack has now been permanently moved in and all kernel and
440 module names reverted to their previous values (eg, usb, ehci, ohci,
441 ums, ...). The old usb stack can be compiled in by prefixing the name
442 with the letter 'o', the old usb modules have been removed.
443 Updating entry 20090216 for xorg and 20090215 for libmap may still
447 The rc.conf(5) option if_up_delay has been renamed to
448 defaultroute_delay to better reflect its purpose. If you have
449 customized this setting in /etc/rc.conf you need to update it to
453 xorg 7.4 wants to configure its input devices via hald which does not
454 yet work with USB2. If the keyboard/mouse does not work in xorg then
456 Option "AllowEmptyInput" "off"
457 to your ServerLayout section. This will cause X to use the configured
458 kbd and mouse sections from your xorg.conf.
461 The GENERIC kernels for all architectures now default to the new USB2
462 stack. No kernel config options or code have been removed so if a
463 problem arises please report it and optionally revert to the old USB
464 stack. If you are loading USB kernel modules or have a custom kernel
465 that includes GENERIC then ensure that usb names are also changed over,
466 eg uftdi -> usb2_serial_ftdi.
468 Older programs linked against the ports libusb 0.1 need to be
469 redirected to the new stack's libusb20. /etc/libmap.conf can
471 # Map old usb library to new one for usb2 stack
472 libusb-0.1.so.8 libusb20.so.1
475 All USB ethernet devices now attach as interfaces under the name ueN
476 (eg. ue0). This is to provide a predictable name as vendors often
477 change usb chipsets in a product without notice.
480 The ichsmb(4) driver has been changed to require SMBus slave
481 addresses be left-justified (xxxxxxx0b) rather than right-justified.
482 All of the other SMBus controller drivers require left-justified
483 slave addresses, so this change makes all the drivers provide the
487 INET6 statistics (struct ip6stat) was updated.
488 netstat(1) needs to be recompiled.
491 NTFS has been removed from GENERIC kernel on amd64 to match
492 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
493 will load ntfs.ko module automatically when NTFS support is
494 actually needed, unless ntfs.ko is not installed or security
495 level prohibits loading kernel modules. If either is the case,
496 "options NTFS" has to be added into kernel config.
499 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
500 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
501 800061. User space tools that rely on the size of struct tcpcb in
502 tcp_var.h (e.g. sockstat) need to be recompiled.
505 ng_tty(4) module updated to match the new TTY subsystem.
506 Due to API change, user-level applications must be updated.
507 New API support added to mpd5 CVS and expected to be present
508 in next mpd5.3 release.
511 With __FreeBSD_version 800060 the makefs tool is part of
512 the base system (it was a port).
515 The afdata and ifnet locks have been changed from mutexes to
516 rwlocks, network modules will need to be re-compiled.
519 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
520 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
521 The new code reduced struct rtentry{} by 16 bytes on 32-bit
522 architecture and 40 bytes on 64-bit architecture. The userland
523 applications "arp" and "ndp" have been updated accordingly.
524 The output from "netstat -r" shows only routing entries and
525 none of the L2 information.
528 __FreeBSD_version 800057 marks the switchover from the
529 binary ath hal to source code. Users must add the line:
531 options AH_SUPPORT_AR5416
533 to their kernel config files when specifying:
537 The ath_hal module no longer exists; the code is now compiled
538 together with the driver in the ath module. It is now
539 possible to tailor chip support (i.e. reduce the set of chips
540 and thereby the code size); consult ath_hal(4) for details.
543 __FreeBSD_version 800054 adds memory barriers to
544 <machine/atomic.h>, new interfaces to ifnet to facilitate
545 multiple hardware transmit queues for cards that support
546 them, and a lock-less ring-buffer implementation to
547 enable drivers to more efficiently manage queueing of
551 A new version of ZFS (version 13) has been merged to -HEAD.
552 This version has zpool attribute "listsnapshots" off by
553 default, which means "zfs list" does not show snapshots,
554 and is the same as Solaris behavior.
557 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
560 The uhci, ohci, ehci and slhci USB Host controller drivers have
561 been put into separate modules. If you load the usb module
562 separately through loader.conf you will need to load the
563 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
564 controller add the following to loader.conf:
570 The ABI used by the PMC toolset has changed. Please keep
571 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
575 atapci kernel module now includes only generic PCI ATA
576 driver. AHCI driver moved to ataahci kernel module.
577 All vendor-specific code moved into separate kernel modules:
578 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
579 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
580 atamarvell, atamicron, atanational, atanetcell, atanvidia,
581 atapromise, ataserverworks, atasiliconimage, atasis, atavia
584 The TTY subsystem of the kernel has been replaced by a new
585 implementation, which provides better scalability and an
586 improved driver model. Most common drivers have been migrated to
587 the new TTY subsystem, while others have not. The following
588 drivers have not yet been ported to the new TTY layer:
591 cy, digi, rc, rp, sio
597 ng_h4, ng_tty, ppp, sl, snp
599 Adding these drivers to your kernel configuration file shall
600 cause compilation to fail.
603 ntpd has been upgraded to 4.2.4p5.
606 OpenSSH has been upgraded to 5.1p1.
608 For many years, FreeBSD's version of OpenSSH preferred DSA
609 over RSA for host and user authentication keys. With this
610 upgrade, we've switched to the vendor's default of RSA over
611 DSA. This may cause upgraded clients to warn about unknown
612 host keys even for previously known hosts. Users should
613 follow the usual procedure for verifying host keys before
614 accepting the RSA key.
616 This can be circumvented by setting the "HostKeyAlgorithms"
617 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
620 Please note that the sequence of keys offered for
621 authentication has been changed as well. You may want to
622 specify IdentityFile in a different order to revert this
626 The sio(4) driver has been removed from the i386 and amd64
627 kernel configuration files. This means uart(4) is now the
628 default serial port driver on those platforms as well.
630 To prevent collisions with the sio(4) driver, the uart(4) driver
631 uses different names for its device nodes. This means the
632 onboard serial port will now most likely be called "ttyu0"
633 instead of "ttyd0". You may need to reconfigure applications to
634 use the new device names.
636 When using the serial port as a boot console, be sure to update
637 /boot/device.hints and /etc/ttys before booting the new kernel.
638 If you forget to do so, you can still manually specify the hints
639 at the loader prompt:
641 set hint.uart.0.at="isa"
642 set hint.uart.0.port="0x3F8"
643 set hint.uart.0.flags="0x10"
644 set hint.uart.0.irq="4"
648 The gpt(8) utility has been removed. Use gpart(8) to partition
652 The version that Linuxulator emulates was changed from 2.4.2
653 to 2.6.16. If you experience any problems with Linux binaries
654 please try to set sysctl compat.linux.osrelease to 2.4.2 and
655 if it fixes the problem contact emulation mailing list.
658 ISDN4BSD (I4B) was removed from the src tree. You may need to
659 update a your kernel configuration and remove relevant entries.
662 I have checked in code to support multiple routing tables.
663 See the man pages setfib(1) and setfib(2).
664 This is a hopefully backwards compatible version,
665 but to make use of it you need to compile your kernel
666 with options ROUTETABLES=2 (or more up to 16).
669 The 802.11 wireless support was redone to enable multi-bss
670 operation on devices that are capable. The underlying device
671 is no longer used directly but instead wlanX devices are
672 cloned with ifconfig. This requires changes to rc.conf files.
674 ifconfig_ath0="WPA DHCP"
677 ifconfig_wlan0="WPA DHCP"
678 see rc.conf(5) for more details. In addition, mergemaster of
679 /etc/rc.d is highly recommended. Simultaneous update of userland
680 and kernel wouldn't hurt either.
682 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
683 modules were merged into the base wlan module. All references
684 to these modules (e.g. in kernel config files) must be removed.
687 psm(4) has gained write(2) support in native operation level.
688 Arbitrary commands can be written to /dev/psm%d and status can
689 be read back from it. Therefore, an application is responsible
690 for status validation and error recovery. It is a no-op in
691 other operation levels.
694 Support for KSE threading has been removed from the kernel. To
695 run legacy applications linked against KSE libmap.conf may
696 be used. The following libmap.conf may be used to ensure
697 compatibility with any prior release:
699 libpthread.so.1 libthr.so.1
700 libpthread.so.2 libthr.so.2
701 libkse.so.3 libthr.so.3
704 The layout of struct vmspace has changed. This affects libkvm
705 and any executables that link against libkvm and use the
706 kvm_getprocs() function. In particular, but not exclusively,
707 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
708 The effects are minimal, but it's advisable to upgrade world
712 The latest em driver no longer has support in it for the
713 82575 adapter, this is now moved to the igb driver. The
714 split was done to make new features that are incompatible
715 with older hardware easier to do.
718 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
719 likewise the kernel option is now GEOM_LINUX_LVM.
722 The default NFS mount mode has changed from UDP to TCP for
723 increased reliability. If you rely on (insecurely) NFS
724 mounting across a firewall you may need to update your
728 Belatedly note the addition of m_collapse for compacting
732 The fts(3) structures have been changed to use adequate
733 integer types for their members and so to be able to cope
734 with huge file trees. The old fts(3) ABI is preserved
735 through symbol versioning in libc, so third-party binaries
736 using fts(3) should still work, although they will not take
737 advantage of the extended types. At the same time, some
738 third-party software might fail to build after this change
739 due to unportable assumptions made in its source code about
740 fts(3) structure members. Such software should be fixed
741 by its vendor or, in the worst case, in the ports tree.
742 FreeBSD_version 800015 marks this change for the unlikely
743 case that a portable fix is impossible.
746 To upgrade to -current after this date, you must be running
747 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
748 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
751 The ADAPTIVE_GIANT kernel option has been retired because its
752 functionality is the default now.
755 The AT keyboard emulation of sunkbd(4) has been turned on
756 by default. In order to make the special symbols of the Sun
757 keyboards driven by sunkbd(4) work under X these now have
758 to be configured the same way as Sun USB keyboards driven
759 by ukbd(4) (which also does AT keyboard emulation), f.e.:
761 Option "XkbLayout" "us"
762 Option "XkbRules" "xorg"
763 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
766 It has been decided that it is desirable to provide ABI
767 backwards compatibility to the FreeBSD 4/5/6 versions of the
768 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
769 broken with the introduction of PCI domain support (see the
770 20070930 entry). Unfortunately, this required the ABI of
771 PCIOCGETCONF to be broken again in order to be able to
772 provide backwards compatibility to the old version of that
773 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
774 again. As for prominent ports this affects neither pciutils
775 nor xorg-server this time, the hal port needs to be rebuilt
779 The misnamed kthread_create() and friends have been renamed
780 to kproc_create() etc. Many of the callers already
782 I will return kthread_create() and friends in a while
783 with implementations that actually create threads, not procs.
784 Renaming corresponds with version 800002.
790 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
791 WITHOUT_LIBTHR are set.
794 The PCI code has been made aware of PCI domains. This means that
795 the location strings as used by pciconf(8) etc are now in the
796 following format: pci<domain>:<bus>:<device>[:<function>]. It
797 also means that consumers of <sys/pciio.h> potentially need to
798 be recompiled; this includes the hal and xorg-server ports.
801 The caching daemon (cached) was renamed to nscd. nscd.conf
802 configuration file should be used instead of cached.conf and
803 nscd_enable, nscd_pidfile and nscd_flags options should be used
804 instead of cached_enable, cached_pidfile and cached_flags in
808 The getfacl(1) utility now prints owning user and group name
809 instead of owning uid and gid in the three line comment header.
810 This is the same behavior as getfacl(1) on Solaris and Linux.
813 The new IPsec code is now compiled in using the IPSEC option. The
814 IPSEC option now requires "device crypto" be defined in your kernel
815 configuration. The FAST_IPSEC kernel option is now deprecated.
818 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
819 note the changed syntax - keep state is now on by default. Also
820 note the fact that ftp-proxy(8) has been changed from bottom up and
821 has been moved from libexec to usr/sbin. Changes in the ALTQ
822 handling also affect users of IPFW's ALTQ capabilities.
825 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
826 only IPsec supported by FreeBSD. The new IPsec stack
827 supports both IPv4 and IPv6. The kernel option will change
828 after the code changes have settled in. For now the kernel
829 option IPSEC is deprecated and FAST_IPSEC is the only option, that
830 will change after some settling time.
833 The wicontrol(8) utility has been removed from the base system. wi(4)
834 cards should be configured using ifconfig(8), see the man page for more
838 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
839 instead of the nve(4) driver. Please update your configuration
843 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
844 database if it is missing or older than the aliases file. If
845 desired, set the new rc.conf option sendmail_rebuild_aliases
846 to "YES" to restore that functionality.
849 The IPv4 multicast socket code has been considerably modified, and
850 moved to the file sys/netinet/in_mcast.c. Initial support for the
851 RFC 3678 Source-Specific Multicast Socket API has been added to
852 the IPv4 network stack.
854 Strict multicast and broadcast reception is now the default for
855 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
856 has now been removed.
858 The RFC 1724 hack for interface selection has been removed; the use
859 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
860 been added to replace it. Consumers such as routed will soon be
861 updated to reflect this.
863 These changes affect users who are running routed(8) or rdisc(8)
864 from the FreeBSD base system on point-to-point or unnumbered
868 The net80211 layer has changed significantly and all wireless
869 drivers that depend on it need to be recompiled. Further these
870 changes require that any program that interacts with the wireless
871 support in the kernel be recompiled; this includes: ifconfig,
872 wpa_supplicant, hostapd, and wlanstats. Users must also, for
873 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
874 if they use modules for wireless support. These modules implement
875 scanning support for station and ap modes, respectively. Failure
876 to load the appropriate module before marking a wireless interface
877 up will result in a message to the console and the device not
881 The pam_nologin(8) module ceases to provide an authentication
882 function and starts providing an account management function.
883 Consequent changes to /etc/pam.d should be brought in using
884 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
885 need manual editing as follows. Locate this line (or similar):
887 auth required pam_nologin.so no_warn
889 and change it according to this example:
891 account required pam_nologin.so no_warn
893 That is, the first word needs to be changed from "auth" to
894 "account". The new line can be moved to the account section
895 within the file for clarity. Not updating pam.conf(5) files
896 will result in nologin(5) ignored by the respective services.
899 The ether_ioctl() function has been synchronized with ioctl(2)
900 and ifnet.if_ioctl. Due to that, the size of one of its arguments
901 has changed on 64-bit architectures. All kernel modules using
902 ether_ioctl() need to be rebuilt on such architectures.
905 Improved INCLUDE_CONFIG_FILE support has been introduced to the
906 config(8) utility. In order to take advantage of this new
907 functionality, you are expected to recompile and install
908 src/usr.sbin/config. If you don't rebuild config(8), and your
909 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
910 build will be broken because of a missing "kernconfstring"
914 Symbol versioning is enabled by default. To disable it, use
915 option WITHOUT_SYMVER. It is not advisable to attempt to
916 disable symbol versioning once it is enabled; your installworld
917 will break because a symbol version-less libc will get installed
918 before the install tools. As a result, the old install tools,
919 which previously had symbol dependencies to FBSD_1.0, will fail
920 because the freshly installed libc will not have them.
922 The default threading library (providing "libpthread") has been
923 changed to libthr. If you wish to have libkse as your default,
924 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
927 The ABI breakage in sendmail(8)'s libmilter has been repaired
928 so it is no longer necessary to recompile mail filters (aka,
929 milters). If you recompiled mail filters after the 20070408
930 note, it is not necessary to recompile them again.
933 The new trunk(4) driver has been renamed to lagg(4) as it better
934 reflects its purpose. ifconfig will need to be recompiled.
937 sendmail(8) has been updated to version 8.14.1. Mail filters
938 (aka, milters) compiled against the libmilter included in the
939 base operating system should be recompiled.
942 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
943 In order to use them one must agree to the respective LICENSE in
944 share/doc/legal and define legal.intel_<name>.license_ack=1 via
945 loader.conf(5) or kenv(1). Make sure to deinstall the now
946 deprecated modules from the respective firmware ports.
949 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
950 were removed from FreeBSD's libc. These originally came from INRIA
951 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
952 deprecated in previous releases.
953 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
954 replace it as a more portable (and re-entrant) API.
957 To support interrupt filtering a modification to the newbus API
958 has occurred, ABI was broken and __FreeBSD_version was bumped
959 to 700031. Please make sure that your kernel and modules are in
961 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
964 The IPv6 multicast forwarding code may now be loaded into GENERIC
965 kernels by loading the ip_mroute.ko module. This is built into the
966 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
967 set; see src.conf(5) for more information.
970 The output of netstat -r has changed. Without -n, we now only
971 print a "network name" without the prefix length if the network
972 address and mask exactly match a Class A/B/C network, and an entry
973 exists in the nsswitch "networks" map.
974 With -n, we print the full unabbreviated CIDR network prefix in
975 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
976 This change is in preparation for changes such as equal-cost
977 multipath, and to more generally assist operational deployment
978 of FreeBSD as a modern IPv4 router.
981 PIM has been turned on by default in the IPv4 multicast
982 routing code. The kernel option 'PIM' has now been removed.
983 PIM is now built by default if option 'MROUTING' is specified.
984 It may now be loaded into GENERIC kernels by loading the
988 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
989 has been removed. Its functionality may be achieved by explicitly
990 configuring gif(4) interfaces and using the 'phyint' keyword in
992 XORP does not support source-routed IPv4 multicast tunnels nor the
993 integrated IPIP tunneling, therefore it is not affected by this
994 change. The __FreeBSD_version macro has been bumped to 700030.
997 Support for PCI Message Signalled Interrupts has been
998 re-enabled in the bge driver, only for those chips which are
999 believed to support it properly. If there are any problems,
1000 MSI can be disabled completely by setting the
1001 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
1005 Support for PCI Message Signalled Interrupts has been
1006 disabled again in the bge driver. Many revisions of the
1007 hardware fail to support it properly. Support can be
1008 re-enabled by removing the #define of BGE_DISABLE_MSI in
1009 "src/sys/dev/bge/if_bge.c".
1012 Support for PCI Message Signalled Interrupts has been added
1013 to the bge driver. If there are any problems, MSI can be
1014 disabled completely by setting the 'hw.pci.enable_msi' and
1015 'hw.pci.enable_msix' tunables to 0 in the loader.
1018 The removal of several facets of the experimental Threading
1019 system from the kernel means that the proc and thread structures
1020 have changed quite a bit. I suggest all kernel modules that might
1021 reference these structures be recompiled.. Especially the
1025 Sound infrastructure has been updated with various fixes and
1026 improvements. Most of the changes are pretty much transparent,
1027 with exceptions of followings:
1028 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1029 moved to their own dev sysctl nodes, for example:
1030 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1031 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1032 own chardev in the form of "dsp%d.<function>%d", where <function>
1033 is p = playback, r = record and v = virtual, respectively. Users
1034 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1035 This does not affect those who are using "/dev/dsp".
1038 geom(4)'s gmirror(8) class metadata structure has been
1039 rev'd from v3 to v4. If you update across this point and
1040 your metadata is converted for you, you will not be easily
1041 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1042 kernel module will be unable to read the v4 metadata. You
1043 can resolve this by doing from the loader(8) prompt:
1045 set vfs.root.mountfrom="ufs:/dev/XXX"
1047 where XXX is the root slice of one of the disks that composed
1048 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1049 the array the same way you built it originally.
1052 The following binaries have been disconnected from the build:
1053 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1054 and mount_std. The functionality of these programs has been
1055 moved into the mount program. For example, to mount a devfs
1056 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1057 This does not affect entries in /etc/fstab, since entries in
1058 /etc/fstab are always processed with "mount -t fstype".
1061 Support for PCI Message Signalled Interrupts on i386 and amd64
1062 has been added to the kernel and various drivers will soon be
1063 updated to use MSI when it is available. If there are any problems,
1064 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1065 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1068 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1069 The lockmgr object layout has been changed as a result of having
1070 a lock_object embedded in it. As a consequence all file system
1071 kernel modules must be re-compiled. The mutex profiling man page
1072 has not yet been updated to reflect this change.
1075 KSE in the kernel has now been made optional and turned on by
1076 default. Use 'nooption KSE' in your kernel config to turn it
1077 off. All kernel modules *must* be recompiled after this change.
1078 There-after, modules from a KSE kernel should be compatible with
1079 modules from a NOKSE kernel due to the temporary padding fields
1080 added to 'struct proc'.
1083 mrouted and its utilities have been removed from the base system.
1086 Some ioctl(2) command codes have changed. Full backward ABI
1087 compatibility is provided if the "options COMPAT_FREEBSD6" is
1088 present in the kernel configuration file. Make sure to add
1089 this option to your kernel config file, or recompile X.Org
1090 and the rest of ports; otherwise they may refuse to work.
1093 tcpslice has been removed from the base system.
1096 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1097 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1098 systat needs to be rebuilt.
1101 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1104 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1105 for IPFIREWALL_FORWARD is now as it was before when it was first
1106 committed and for years after. The behaviour is now ON.
1109 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1110 Now it can decrypt files created from different architectures.
1111 Unfortunately, it is no longer able to decrypt a cipher text
1112 generated with an older version on 64 bit architectures.
1113 If you have such a file, you need old utility to decrypt it.
1116 The interface version of the i4b kernel part has changed. So
1117 after updating the kernel sources and compiling a new kernel,
1118 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1119 be rebuilt, and vice versa.
1122 The XBOX kernel now defaults to the nfe(4) driver instead of
1123 the nve(4) driver. Please update your configuration
1127 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1128 PCnet family of NICs has been removed. The new le(4) driver serves
1129 as an equivalent but cross-platform replacement with the pcn(4)
1130 driver still providing performance-optimized support for the subset
1131 of AMD Am79C971 PCnet-FAST and greater chips as before.
1134 The machdep.* sysctls and the adjkerntz utility have been
1135 modified a bit. The new adjkerntz utility uses the new
1136 sysctl names and sysctlbyname() calls, so it may be impossible
1137 to run an old /sbin/adjkerntz utility in single-user mode
1138 with a new kernel. Replace the `adjkerntz -i' step before
1139 `make installworld' with:
1141 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1143 and proceed as usual with the rest of the installworld-stage
1144 steps. Otherwise, you risk installing binaries with their
1145 timestamp set several hours in the future, especially if
1146 you are running with local time set to GMT+X hours.
1149 The ip6fw utility has been removed. The behavior provided by
1150 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1151 have been updated to deal with it. There are some rules that
1152 might not migrate cleanly. Use rc.firewall6 as a template to
1156 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1157 attachments have been removed. Make sure to configure scc(4)
1158 on sparc64. Note also that by default puc(4) will use uart(4)
1159 and not sio(4) for serial ports because interrupt handling has
1160 been optimized for multi-port serial cards and only uart(4)
1161 implements the interface to support it.
1164 The scc(4) driver replaces puc(4) for Serial Communications
1165 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1166 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1167 configuration to make sure that the serial ports remain
1171 Most world/kernel related NO_* build options changed names.
1172 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1173 after FreeBSD ports) and should be set in /etc/src.conf
1174 (the src.conf(5) manpage is provided). Full backwards
1175 compatibility is maintained for the time being though it's
1176 highly recommended to start moving old options out of the
1177 system-wide /etc/make.conf file into the new /etc/src.conf
1178 while also properly renaming them. More conversions will
1179 likely follow. Posting to current@:
1181 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1184 The NETSMBCRYPTO kernel option has been retired because its
1185 functionality is always included in NETSMB and smbfs.ko now.
1188 The TDFX_LINUX kernel option was retired and replaced by the
1189 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1190 kernel module. Loading it alone should suffice to get 3dfx support
1191 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1195 The 'audit' group was added to support the new auditing functionality
1196 in the base system. Be sure to follow the directions for updating,
1197 including the requirement to run mergemaster -p.
1200 The kernel ABI to file system modules was changed on i386.
1201 Please make sure that your kernel and modules are in sync.
1204 This actually occured some time ago, but installing the kernel
1205 now also installs a bunch of symbol files for the kernel modules.
1206 This increases the size of /boot/kernel to about 67Mbytes. You
1207 will need twice this if you will eventually back this up to kernel.old
1208 on your next install.
1209 If you have a shortage of room in your root partition, you should add
1210 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1211 to your /etc/make.conf.
1214 libc's malloc implementation has been replaced. This change has the
1215 potential to uncover application bugs that previously went unnoticed.
1216 See the malloc(3) manual page for more details.
1219 The generic netgraph(4) cookie has been changed. If you upgrade
1220 kernel passing this point, you also need to upgrade userland
1221 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1224 si(4)'s device files now contain the unit number.
1225 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1228 The kernel ABI was mostly destroyed due to a change in the size
1229 of struct lock_object which is nested in other structures such
1230 as mutexes which are nested in all sorts of other structures.
1231 Make sure your kernel and modules are in sync.
1234 The page coloring algorithm in the VM subsystem was converted
1235 from tuning with kernel options to autotuning. Please remove
1236 any PQ_* option except PQ_NOOPT from your kernel config.
1239 The net80211-related tools in the tools/tools/ath directory
1240 have been moved to tools/tools/net80211 and renamed with a
1241 "wlan" prefix. Scripts that use them should be adjusted
1245 Scripts in the local_startup directories (as defined in
1246 /etc/defaults/rc.conf) that have the new rc.d semantics will
1247 now be run as part of the base system rcorder. If there are
1248 errors or problems with one of these local scripts, it could
1249 cause boot problems. If you encounter such problems, boot in
1250 single user mode, remove that script from the */rc.d directory.
1251 Please report the problem to the port's maintainer, and the
1252 freebsd-ports@freebsd.org mailing list.
1255 The nodev mount option was deprecated in RELENG_6 (where it
1256 was a no-op), and is now unsupported. If you have nodev or dev listed
1257 in /etc/fstab, remove it, otherwise it will result in a mount error.
1260 ABI between ipfw(4) and ipfw(8) has been changed. You need
1261 to rebuild ipfw(8) when rebuilding kernel.
1264 rp(4)'s device files now contain the unit number.
1265 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1268 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1269 Its /etc/rc.conf.d configuration file has been `ppp' from
1270 the beginning, and hence there is no need to touch it.
1273 Now most modules get their build-time options from the kernel
1274 configuration file. A few modules still have fixed options
1275 due to their non-conformant implementation, but they will be
1276 corrected eventually. You may need to review the options of
1277 the modules in use, explicitly specify the non-default options
1278 in the kernel configuration file, and rebuild the kernel and
1282 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1283 to turn polling(4) on your interfaces.
1286 The old bridge(4) implementation was retired. The new
1287 if_bridge(4) serves as a full functional replacement.
1290 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1291 to conform to POSIX-2001. This change broke an ABI
1292 compatibility on 64 bit architecture. You have to recompile
1293 userland programs that use getaddrinfo(3) on 64 bit
1297 RELENG_6 branched here.
1300 The pccard_ifconfig rc.conf variable has been removed and a new
1301 variable, ifconfig_DEFAULT has been introduced. Unlike
1302 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1303 do not have ifconfig_ifn entries rather than just those in
1304 removable_interfaces.
1307 Some previous versions of PAM have permitted the use of
1308 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1309 to third party PAM modules in /usr/local/lib. A change has been
1310 made to require the use of absolute paths in order to avoid
1311 ambiguity and dependence on library path configuration, which may
1312 affect existing configurations.
1315 Major changes to network interface API. All drivers must be
1316 recompiled. Drivers not in the base system will need to be
1317 updated to the new APIs.
1320 Changes were made to kinfo_proc in sys/user.h. Please recompile
1321 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1322 will not behave correctly.
1324 The API and ABI for hwpmc(4) have changed with the addition
1325 of sampling support. Please recompile lib/libpmc(3) and
1326 usr.sbin/{pmcstat,pmccontrol}.
1329 The OpenBSD dhclient was imported in place of the ISC dhclient
1330 and the network interface configuration scripts were updated
1331 accordingly. If you use DHCP to configure your interfaces, you
1332 must now run devd. Also, DNS updating was lost so you will need
1333 to find a workaround if you use this feature.
1335 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1336 sure to run mergemaster -p (like you are supposed to do every time
1340 if_bridge was added to the tree. This has changed struct ifnet.
1341 Please recompile userland and all network related modules.
1344 The n_net of a struct netent was changed to an uint32_t, and
1345 1st argument of getnetbyaddr() was changed to an uint32_t, to
1346 conform to POSIX-2001. These changes broke an ABI
1347 compatibility on 64 bit architecture. With these changes,
1348 shlib major of libpcap was bumped. You have to recompile
1349 userland programs that use getnetbyaddr(3), getnetbyname(3),
1350 getnetent(3) and/or libpcap on 64 bit architecture.
1353 Kernel parsing of extra options on '#!' first lines of shell
1354 scripts has changed. Lines with multiple options likely will
1355 fail after this date. For full details, please see
1356 http://people.freebsd.org/~gad/Updating-20050528.txt
1359 The packet filter (pf) code has been updated to OpenBSD 3.7
1360 Please note the changed anchor syntax and the fact that
1361 authpf(8) now needs a mounted fdescfs(5) to function.
1364 The NO_MIXED_MODE kernel option has been removed from the i386
1365 amd64 platforms as its use has been superceded by the new local
1366 APIC timer code. Any kernel config files containing this option
1370 The on-disk format of LC_CTYPE files was changed to be machine
1371 independent. Please make sure NOT to use NO_CLEAN buildworld
1372 when crossing this point. Crossing this point also requires
1373 recompile or reinstall of all locale depended packages.
1376 The ifi_epoch member of struct if_data has been changed to
1377 contain the uptime at which the interface was created or the
1378 statistics zeroed rather then the wall clock time because
1379 wallclock time may go backwards. This should have no impact
1380 unless an snmp implementation is using this value (I know of
1381 none at this point.)
1384 The acpi_perf and acpi_throttle drivers are now part of the
1385 acpi(4) main module. They are no longer built separately.
1388 The layout of struct image_params has changed. You have to
1389 recompile all compatibility modules (linux, svr4, etc) for use
1390 with the new kernel.
1393 The p4tcc driver has been merged into cpufreq(4). This makes
1394 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1395 compile in "device cpufreq" to restore this functionality.
1398 The responsibility of recomputing the file system summary of
1399 a SoftUpdates-enabled dirty volume has been transferred to the
1400 background fsck. A rebuild of fsck(8) utility is recommended
1401 if you have updated the kernel.
1403 To get the old behavior (recompute file system summary at mount
1404 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1405 mounting the new volume.
1408 The cpufreq import is complete. As part of this, the sysctls for
1409 acpi(4) throttling have been removed. The power_profile script
1410 has been updated, so you can use performance/economy_cpu_freq in
1411 rc.conf(5) to set AC on/offline cpu frequencies.
1414 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1415 requires recompiling libnetgraph and userland netgraph utilities.
1418 Support for abbreviated forms of a number of ipfw options is
1419 now deprecated. Warnings are printed to stderr indicating the
1420 correct full form when a match occurs. Some abbreviations may
1421 be supported at a later date based on user feedback. To be
1422 considered for support, abbreviations must be in use prior to
1423 this commit and unlikely to be confused with current key words.
1426 By a popular demand, a lot of NOFOO options were renamed
1427 to NO_FOO (see bsd.compat.mk for a full list). The old
1428 spellings are still supported, but will cause annoying
1429 warnings on stderr. Make sure you upgrade properly (see
1430 the COMMON ITEMS: section later in this file).
1433 Auto-loading of ancillary wlan modules such as wlan_wep has
1434 been temporarily disabled; you need to statically configure
1435 the modules you need into your kernel or explicitly load them
1436 prior to use. Specifically, if you intend to use WEP encryption
1437 with an 802.11 device load/configure wlan_wep; if you want to
1438 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1439 and wlan_xauth as required.
1442 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1443 (``enable lqr''), older versions would revert to LCP ECHO mode on
1444 negotiation failure. Now, ``enable echo'' is required for this
1445 behaviour. The ppp version number has been bumped to 3.4.2 to
1449 The wlan support has been updated to split the crypto support
1450 into separate modules. For static WEP you must configure the
1451 wlan_wep module in your system or build and install the module
1452 in place where it can be loaded (the kernel will auto-load
1453 the module when a wep key is configured).
1456 The ath driver has been updated to split the tx rate control
1457 algorithm into a separate module. You need to include either
1458 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1461 Support for systems with an 80386 CPU has been removed. Please
1462 use FreeBSD 5.x or earlier on systems with an 80386.
1465 We have had a hack which would mount the root filesystem
1466 R/W if the device were named 'md*'. As part of the vnode
1467 work I'm doing I have had to remove this hack. People
1468 building systems which use preloaded MD root filesystems
1469 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1470 their /etc/rc scripts.
1473 FreeBSD 5.3 shipped here.
1476 The size of struct tcpcb has changed again due to the removal
1477 of RFC1644 T/TCP. You have to recompile userland programs that
1478 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1481 The size of struct tcpcb has changed. You have to recompile
1482 userland programs that read kmem for tcp sockets directly
1483 (netstat, sockstat, etc.)
1486 RELENG_5 branched here. For older entries, please see updating
1487 in the RELENG_5 branch.
1493 Avoid using make -j when upgrading. From time to time in the
1494 past there have been problems using -j with buildworld and/or
1495 installworld. This is especially true when upgrading between
1496 "distant" versions (eg one that cross a major release boundary
1497 or several minor releases, or when several months have passed
1498 on the -current branch).
1500 Sometimes, obscure build problems are the result of environment
1501 poisoning. This can happen because the make utility reads its
1502 environment when searching for values for global variables.
1503 To run your build attempts in an "environmental clean room",
1504 prefix all make commands with 'env -i '. See the env(1) manual
1505 page for more details.
1507 When upgrading from one major version to another it is generally
1508 best to upgrade to the latest code in the currently installed branch
1509 first, then do an upgrade to the new branch. This is the best-tested
1510 upgrade path, and has the highest probability of being successful.
1511 Please try this approach before reporting problems with a major
1516 If you are updating from a prior version of FreeBSD (even one just
1517 a few days old), you should follow this procedure. It is the most
1518 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1520 make kernel-toolchain
1521 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1522 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1524 To test a kernel once
1525 ---------------------
1526 If you just want to boot a kernel once (because you are not sure
1527 if it works, or if you want to boot a known bad kernel to provide
1528 debugging information) run
1529 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1530 nextboot -k testkernel
1532 To just build a kernel when you know that it won't mess you up
1533 --------------------------------------------------------------
1534 This assumes you are already running a 5.X system. Replace
1535 ${arch} with the architecture of your machine (e.g. "i386",
1536 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1538 cd src/sys/${arch}/conf
1539 config KERNEL_NAME_HERE
1540 cd ../compile/KERNEL_NAME_HERE
1545 If this fails, go to the "To build a kernel" section.
1547 To rebuild everything and install it on the current system.
1548 -----------------------------------------------------------
1549 # Note: sometimes if you are running current you gotta do more than
1550 # is listed here if you are upgrading from a really old current.
1552 <make sure you have good level 0 dumps>
1554 make kernel KERNCONF=YOUR_KERNEL_HERE
1556 <reboot in single user> [3]
1564 To cross-install current onto a separate partition
1565 --------------------------------------------------
1566 # In this approach we use a separate partition to hold
1567 # current's root, 'usr', and 'var' directories. A partition
1568 # holding "/", "/usr" and "/var" should be about 2GB in
1571 <make sure you have good level 0 dumps>
1574 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1575 <maybe newfs current's root partition>
1576 <mount current's root partition on directory ${CURRENT_ROOT}>
1577 make installworld DESTDIR=${CURRENT_ROOT}
1578 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1579 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1580 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1581 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1582 <reboot into current>
1583 <do a "native" rebuild/install as described in the previous section>
1584 <maybe install compatibility libraries from ports/misc/compat*>
1588 To upgrade in-place from 5.x-stable to current
1589 ----------------------------------------------
1590 <make sure you have good level 0 dumps>
1592 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1594 <reboot in single user> [3]
1601 Make sure that you've read the UPDATING file to understand the
1602 tweaks to various things you need. At this point in the life
1603 cycle of current, things change often and you are on your own
1604 to cope. The defaults can also change, so please read ALL of
1605 the UPDATING entries.
1607 Also, if you are tracking -current, you must be subscribed to
1608 freebsd-current@freebsd.org. Make sure that before you update
1609 your sources that you have read and understood all the recent
1610 messages there. If in doubt, please track -stable which has
1611 much fewer pitfalls.
1613 [1] If you have third party modules, such as vmware, you
1614 should disable them at this point so they don't crash your
1617 [3] From the bootblocks, boot -s, and then do
1622 adjkerntz -i # if CMOS is wall time
1623 Also, when doing a major release upgrade, it is required that
1624 you boot into single user mode to do the installworld.
1626 [4] Note: This step is non-optional. Failure to do this step
1627 can result in a significant reduction in the functionality of the
1628 system. Attempting to do it by hand is not recommended and those
1629 that pursue this avenue should read this file carefully, as well
1630 as the archives of freebsd-current and freebsd-hackers mailing lists
1631 for potential gotchas.
1633 [5] Usually this step is a noop. However, from time to time
1634 you may need to do this if you get unknown user in the following
1635 step. It never hurts to do it all the time. You may need to
1636 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1637 install) after the buildworld before this step if you last updated
1638 from current before 20020224 or from -stable before 20020408.
1640 [8] In order to have a kernel that can run the 4.x binaries
1641 needed to do an installworld, you must include the COMPAT_FREEBSD4
1642 option in your kernel. Failure to do so may leave you with a system
1643 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1644 is required to run the 5.x binaries on more recent kernels.
1646 Make sure that you merge any new devices from GENERIC since the
1647 last time you updated your kernel config file.
1649 [9] When checking out sources, you must include the -P flag to have
1650 cvs prune empty directories.
1652 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1653 "?=" instead of the "=" assignment operator, so that buildworld can
1654 override the CPUTYPE if it needs to.
1656 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1657 not on the command line, or in /etc/make.conf. buildworld will
1658 warn if it is improperly defined.
1661 This file contains a list, in reverse chronological order, of major
1662 breakages in tracking -current. Not all things will be listed here,
1663 and it only starts on October 16, 2004. Updating files can found in
1664 previous releases if your system is older than this.
1666 Copyright information:
1668 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1670 Redistribution, publication, translation and use, with or without
1671 modification, in full or in part, in any form or format of this
1672 document are permitted without further permission from the author.
1674 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1675 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1676 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1677 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1678 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1679 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1680 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1681 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1682 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1683 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1684 POSSIBILITY OF SUCH DAMAGE.
1686 If you find this document useful, and you want to, you may buy the
1689 Contact Warner Losh if you have any questions about your use of