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:
12 FreeBSD 8.x has many debugging features turned on, in
13 both the kernel and userland. These features attempt to detect
14 incorrect use of system primitives, and encourage loud failure
15 through extra sanity checking and fail stop semantics. They
16 also substantially impact system performance. If you want to
17 do performance measurement, benchmarking, and optimization,
18 you'll want to turn them off. This includes various WITNESS-
19 related kernel options, INVARIANTS, malloc debugging flags
20 in userland, and various verbose features in the kernel. Many
21 developers choose to disable these features on build machines
22 to maximize performance. (To disable malloc debugging, run
23 ln -s aj /etc/malloc.conf.)
26 Bump the shared library version numbers for all libraries that
27 do not use symbol versioning as part of the 8.0-RELEASE cycle.
28 Bump __FreeBSD_version to 800105.
31 Due to changes in the implementation of virtual network stack
32 support, all network-related kernel modules must be recompiled.
33 As this change breaks the ABI, bump __FreeBSD_version to 800104.
36 The TOE interface to the TCP syncache has been modified to remove struct
37 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
38 cxgb driver is the only TOE consumer affected by this change, and needs
39 to be recompiled along with the kernel. As this change breaks the ABI,
40 bump __FreeBSD_version to 800103.
43 Padding has been added to struct tcpcb, sackhint and tcpstat in
44 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
45 maintainig the ABI. However, this change breaks the ABI, so bump
46 __FreeBSD_version to 800102. User space tools that rely on the size of
47 any of these structs (e.g. sockstat) need to be recompiled.
50 The NFS_LEGACYRPC option has been removed along with the old
51 kernel RPC implementation that this option selected. Kernel
52 configurations may need to be adjusted.
55 The network interface device nodes at /dev/net/<interface> have
56 been removed. All ioctl operations can be performed the normal
57 way using routing sockets. The kqueue functionality can
58 generally be replaced with routing sockets.
61 The documentation from the FreeBSD Documentation Project
62 (Handbook, FAQ, etc.) is now installed via packages by
63 sysinstall(8) and under the /usr/local/share/doc/freebsd
64 directory instead of /usr/share/doc.
67 The ABI of various structures related to the SYSV IPC API have
68 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
69 kernel options now all require COMPAT_FREEBSD7.
70 Bump __FreeBSD_version to 800100.
73 Layout of struct vnet has changed as routing related variables
74 were moved to their own Vimage module. Modules need to be
75 recompiled. Bump __FreeBSD_version to 800099.
78 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
79 and 1024 respectively. As long as no more than 16 groups per
80 process are used, no changes should be visible. When more
81 than 16 groups are used, old binaries may fail if they call
82 getgroups() or getgrouplist() with statically sized storage.
83 Recompiling will work around this, but applications should be
84 modified to use dynamically allocated storage for group arrays
85 as POSIX.1-2008 does not cap an implementation's number of
86 supported groups at NGROUPS_MAX+1 as previous versions did.
88 NFS and portalfs mounts may also be affected as the list of
89 groups is truncated to 16. Users of NFS who use more than 16
90 groups, should take care that negative group permissions are not
91 used on the exported file systems as they will not be reliable
92 unless a GSSAPI based authentication method is used.
95 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
96 This option compiles in the support for adaptive spinning for lockmgrs
97 which want to enable it. The lockinit() function now accepts the
98 flag LK_ADAPTIVE in order to make the lock object subject to
99 adaptive spinning when both held in write and read mode.
102 The layout of the structure returned by IEEE80211_IOC_STA_INFO
103 has changed. User applications that use this ioctl need to be
107 The layout of struct thread has changed. Kernel and modules
111 The layout of structs ifnet, domain, protosw and vnet_net has
112 changed. Kernel modules need to be rebuilt.
113 Bump __FreeBSD_version to 800097.
116 window(1) has been removed from the base system. It can now be
117 installed from ports. The port is called misc/window.
120 The way we are storing and accessing `routing table' entries
121 has changed. Programs reading the FIB, like netstat, need to
125 A new netisr implementation has been added for FreeBSD 8. Network
126 file system modules, such as igmp, ipdivert, and others, should be
128 Bump __FreeBSD_version to 800096.
131 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
135 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
136 Bump __FreeBSD_version to 800094.
139 Add mnt_xflag field to 'struct mount'. File system modules
141 Bump __FreeBSD_version to 800093.
144 The compiling option ADAPTIVE_SX has been retired while it has been
145 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
146 The KPI for sx_init_flags() changes as accepting flags:
147 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
148 has been introduced in order to handle the reversed logic.
149 Bump __FreeBSD_version to 800092.
152 Add support for hierarchical jails. Remove global securelevel.
153 Bump __FreeBSD_version to 800091.
156 The layout of struct vnet_net has changed, therefore modules
158 Bump __FreeBSD_version to 800090.
161 The newly imported zic(8) produces a new format in the
162 output. Please run tzsetup(8) to install the newly created
163 data to /etc/localtime.
166 The sysctl tree for the usb stack has renamed from hw.usb2.* to
167 hw.usb.* and is now consistent again with previous releases.
170 802.11 monitor mode support was revised and driver api's
171 were changed. Drivers dependent on net80211 now support
172 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
173 user-visible data structures were changed but applications
174 that use DLT_IEEE802_11 may require changes.
175 Bump __FreeBSD_version to 800088.
178 The layout of the following structs has changed: sysctl_oid,
179 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
180 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
181 panics may be experienced. World rebuild is required for
182 correctly checking networking state from userland.
183 Bump __FreeBSD_version to 800085.
186 MLDv2 and Source-Specific Multicast (SSM) have been merged
187 to the IPv6 stack. VIMAGE hooks are in but not yet used.
188 The implementation of SSM within FreeBSD's IPv6 stack closely
189 follows the IPv4 implementation.
191 For kernel developers:
193 * The most important changes are that the ip6_output() and
194 ip6_input() paths no longer take the IN6_MULTI_LOCK,
195 and this lock has been downgraded to a non-recursive mutex.
197 * As with the changes to the IPv4 stack to support SSM, filtering
198 of inbound multicast traffic must now be performed by transport
199 protocols within the IPv6 stack. This does not apply to TCP and
200 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
202 * The KPIs used by IPv6 multicast are similar to those used by
203 the IPv4 stack, with the following differences:
204 * im6o_mc_filter() is analogous to imo_multicast_filter().
205 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
206 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
207 * IN6_LOOKUP_MULTI() has been deprecated and removed.
208 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
209 for MLDv1 have an additional 'timer' argument which is used to
210 jitter the initial membership report for the solicited-node
211 multicast membership on-link.
212 * This is not strictly needed for MLDv2, which already jitters
213 its report transmissions. However, the 'timer' argument is
214 preserved in case MLDv1 is active on the interface.
216 * The KAME linked-list based IPv6 membership implementation has
217 been refactored to use a vector similar to that used by the IPv4
219 Code which maintains a list of its own multicast memberships
220 internally, e.g. carp, has been updated to reflect the new
223 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
224 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
225 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
226 implementation constraint which needs to be addressed in HEAD.
228 For application developers:
230 * The changes are broadly similar to those made for the IPv4
233 * The use of IPv4 and IPv6 multicast socket options on the same
234 socket, using mapped addresses, HAS NOT been tested or supported.
236 * There are a number of issues with the implementation of various
237 IPv6 multicast APIs which need to be resolved in the API surface
238 before the implementation is fully compatible with KAME userland
239 use, and these are mostly to do with interface index treatment.
241 * The literature available discusses the use of either the delta / ASM
242 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
243 using setsourcefilter(3)/getsourcefilter(3). For more information
244 please refer to RFC 3768, 'Socket Interface Extensions for
245 Multicast Source Filters'.
247 * Applications which use the published RFC 3678 APIs should be fine.
249 For systems administrators:
251 * The mtest(8) utility has been refactored to support IPv6, in
252 addition to IPv4. Interface addresses are no longer accepted
253 as arguments, their names must be used instead. The utility
254 will map the interface name to its first IPv4 address as
255 returned by getifaddrs(3).
257 * The ifmcstat(8) utility has also been updated to print the MLDv2
258 endpoint state and source filter lists via sysctl(3).
260 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
261 loopback of IPv6 multicast datagrams by default; it defaults to 1
262 to preserve the existing behaviour. Disabling multicast loopback is
263 recommended for optimal system performance.
265 * The IPv6 MROUTING code has been changed to examine this sysctl
266 instead of attempting to perform a group lookup before looping
267 back forwarded datagrams.
269 Bump __FreeBSD_version to 800084.
272 Implement low-level Bluetooth HCI API.
273 Bump __FreeBSD_version to 800083.
276 The layout of struct malloc_type, used by modules to register new
277 memory allocation types, has changed. Most modules will need to
278 be rebuilt or panics may be experienced.
279 Bump __FreeBSD_version to 800081.
282 Anticipate overflowing inp_flags - add inp_flags2.
283 This changes most offsets in inpcb, so checking v4 connection
284 state will require a world rebuild.
285 Bump __FreeBSD_version to 800080.
288 Add an llentry to struct route and struct route_in6. Modules
289 embedding a struct route will need to be recompiled.
290 Bump __FreeBSD_version to 800079.
293 The size of rt_metrics_lite and by extension rtentry has changed.
294 Networking administration apps will need to be recompiled.
295 The route command now supports show as an alias for get, weighting
296 of routes, sticky and nostick flags to alter the behavior of stateful
298 Bump __FreeBSD_version to 800078.
301 Do not use Giant for kbdmux(4) locking. This is wrong and
302 apparently causing more problems than it solves. This will
303 re-open the issue where interrupt handlers may race with
304 kbdmux(4) in polling mode. Typical symptoms include (but
305 not limited to) duplicated and/or missing characters when
306 low level console functions (such as gets) are used while
307 interrupts are enabled (for example geli password prompt,
308 mountroot prompt etc.). Disabling kbdmux(4) may help.
311 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
312 kernel modules referencing any of the above need to be recompiled.
313 Bump __FreeBSD_version to 800075.
316 GEOM_PART has become the default partition slicer for storage devices,
317 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
318 introduces some changes:
320 MSDOS/EBR: the devices created from MSDOS extended partition entries
321 (EBR) can be named differently than with GEOM_MBR and are now symlinks
322 to devices with offset-based names. fstabs may need to be modified.
324 BSD: the "geometry does not match label" warning is harmless in most
325 cases but it points to problems in file system misalignment with
326 disk geometry. The "c" partition is now implicit, covers the whole
327 top-level drive and cannot be (mis)used by users.
329 General: Kernel dumps are now not allowed to be written to devices
330 whose partition types indicate they are meant to be used for file
331 systems (or, in case of MSDOS partitions, as something else than
334 Most of these changes date approximately from 200812.
337 The uscanner(4) driver has been removed from the kernel. This follows
338 Linux removing theirs in 2.6 and making libusb the default interface
342 The multicast forwarding code has been cleaned up. netstat(1)
343 only relies on KVM now for printing bandwidth upcall meters.
344 The IPv4 and IPv6 modules are split into ip_mroute_mod and
345 ip6_mroute_mod respectively. The config(5) options for statically
346 compiling this code remain the same, i.e. 'options MROUTING'.
349 Support for the IFF_NEEDSGIANT network interface flag has been
350 removed, which means that non-MPSAFE network device drivers are no
351 longer supported. In particular, if_ar, if_sr, and network device
352 drivers from the old (legacy) USB stack can no longer be built or
356 POSIX.1 Native Language Support (NLS) has been enabled in libc and
357 a bunch of new language catalog files have also been added.
358 This means that some common libc messages are now localized and
359 they depend on the LC_MESSAGES environmental variable.
362 The k8temp(4) driver has been renamed to amdtemp(4) since
363 support for K10 and K11 CPU families was added.
366 IGMPv3 and Source-Specific Multicast (SSM) have been merged
367 to the IPv4 stack. VIMAGE hooks are in but not yet used.
369 For kernel developers, the most important changes are that the
370 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
371 and this lock has been downgraded to a non-recursive mutex.
373 Transport protocols (UDP, Raw IP) are now responsible for filtering
374 inbound multicast traffic according to group membership and source
375 filters. The imo_multicast_filter() KPI exists for this purpose.
376 Transports which do not use multicast (SCTP, TCP) already reject
377 multicast by default. Forwarding and receive performance may improve
378 as a mutex acquisition is no longer needed in the ip_input()
379 low-level input path. in_addmulti() and in_delmulti() are shimmed
380 to new KPIs which exist to support SSM in-kernel.
382 For application developers, it is recommended that loopback of
383 multicast datagrams be disabled for best performance, as this
384 will still cause the lock to be taken for each looped-back
385 datagram transmission. The net.inet.ip.mcast.loop sysctl may
386 be tuned to 0 to disable loopback by default; it defaults to 1
387 to preserve the existing behaviour.
389 For systems administrators, to obtain best performance with
390 multicast reception and multiple groups, it is always recommended
391 that a card with a suitably precise hash filter is used. Hash
392 collisions will still result in the lock being taken within the
393 transport protocol input path to check group membership.
395 If deploying FreeBSD in an environment with IGMP snooping switches,
396 it is recommended that the net.inet.igmp.sendlocal sysctl remain
397 enabled; this forces 224.0.0.0/24 group membership to be announced
400 The size of 'struct igmpstat' has changed; netstat needs to be
401 recompiled to reflect this.
402 Bump __FreeBSD_version to 800070.
405 libusb20.so.1 is now installed as libusb.so.1 and the ports system
406 updated to use it. This requires a buildworld/installworld in order to
407 update the library and dependencies (usbconfig, etc). Its advisable to
408 rebuild all ports which uses libusb. More specific directions are given
409 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
410 libusb are no longer required and can be removed.
413 A workaround is committed to allow the creation of System V shared
414 memory segment of size > 2 GB on the 64-bit architectures.
415 Due to a limitation of the existing ABI, the shm_segsz member
416 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
417 wrong for large segments. Note that limits must be explicitly
418 raised to allow such segments to be created.
421 The layout of struct ifnet has changed, requiring a rebuild of all
422 network device driver modules.
425 The /dev handling for the new USB stack has changed, a
426 buildworld/installworld is required for libusb20.
429 The new USB2 stack has now been permanently moved in and all kernel and
430 module names reverted to their previous values (eg, usb, ehci, ohci,
431 ums, ...). The old usb stack can be compiled in by prefixing the name
432 with the letter 'o', the old usb modules have been removed.
433 Updating entry 20090216 for xorg and 20090215 for libmap may still
437 The rc.conf(5) option if_up_delay has been renamed to
438 defaultroute_delay to better reflect its purpose. If you have
439 customized this setting in /etc/rc.conf you need to update it to
443 xorg 7.4 wants to configure its input devices via hald which does not
444 yet work with USB2. If the keyboard/mouse does not work in xorg then
446 Option "AllowEmptyInput" "off"
447 to your ServerLayout section. This will cause X to use the configured
448 kbd and mouse sections from your xorg.conf.
451 The GENERIC kernels for all architectures now default to the new USB2
452 stack. No kernel config options or code have been removed so if a
453 problem arises please report it and optionally revert to the old USB
454 stack. If you are loading USB kernel modules or have a custom kernel
455 that includes GENERIC then ensure that usb names are also changed over,
456 eg uftdi -> usb2_serial_ftdi.
458 Older programs linked against the ports libusb 0.1 need to be
459 redirected to the new stack's libusb20. /etc/libmap.conf can
461 # Map old usb library to new one for usb2 stack
462 libusb-0.1.so.8 libusb20.so.1
465 The ichsmb(4) driver has been changed to require SMBus slave
466 addresses be left-justified (xxxxxxx0b) rather than right-justified.
467 All of the other SMBus controller drivers require left-justified
468 slave addresses, so this change makes all the drivers provide the
472 INET6 statistics (struct ip6stat) was updated.
473 netstat(1) needs to be recompiled.
476 NTFS has been removed from GENERIC kernel on amd64 to match
477 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
478 will load ntfs.ko module automatically when NTFS support is
479 actually needed, unless ntfs.ko is not installed or security
480 level prohibits loading kernel modules. If either is the case,
481 "options NTFS" has to be added into kernel config.
484 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
485 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
486 800061. User space tools that rely on the size of struct tcpcb in
487 tcp_var.h (e.g. sockstat) need to be recompiled.
490 ng_tty(4) module updated to match the new TTY subsystem.
491 Due to API change, user-level applications must be updated.
492 New API support added to mpd5 CVS and expected to be present
493 in next mpd5.3 release.
496 With __FreeBSD_version 800060 the makefs tool is part of
497 the base system (it was a port).
500 The afdata and ifnet locks have been changed from mutexes to
501 rwlocks, network modules will need to be re-compiled.
504 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
505 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
506 The new code reduced struct rtentry{} by 16 bytes on 32-bit
507 architecture and 40 bytes on 64-bit architecture. The userland
508 applications "arp" and "ndp" have been updated accordingly.
509 The output from "netstat -r" shows only routing entries and
510 none of the L2 information.
513 __FreeBSD_version 800057 marks the switchover from the
514 binary ath hal to source code. Users must add the line:
516 options AH_SUPPORT_AR5416
518 to their kernel config files when specifying:
522 The ath_hal module no longer exists; the code is now compiled
523 together with the driver in the ath module. It is now
524 possible to tailor chip support (i.e. reduce the set of chips
525 and thereby the code size); consult ath_hal(4) for details.
528 __FreeBSD_version 800054 adds memory barriers to
529 <machine/atomic.h>, new interfaces to ifnet to facilitate
530 multiple hardware transmit queues for cards that support
531 them, and a lock-less ring-buffer implementation to
532 enable drivers to more efficiently manage queueing of
536 A new version of ZFS (version 13) has been merged to -HEAD.
537 This version has zpool attribute "listsnapshots" off by
538 default, which means "zfs list" does not show snapshots,
539 and is the same as Solaris behavior.
542 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
545 The uhci, ohci, ehci and slhci USB Host controller drivers have
546 been put into separate modules. If you load the usb module
547 separately through loader.conf you will need to load the
548 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
549 controller add the following to loader.conf:
555 The ABI used by the PMC toolset has changed. Please keep
556 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
560 The TTY subsystem of the kernel has been replaced by a new
561 implementation, which provides better scalability and an
562 improved driver model. Most common drivers have been migrated to
563 the new TTY subsystem, while others have not. The following
564 drivers have not yet been ported to the new TTY layer:
567 cy, digi, rc, rp, sio
573 ng_h4, ng_tty, ppp, sl, snp
575 Adding these drivers to your kernel configuration file shall
576 cause compilation to fail.
579 ntpd has been upgraded to 4.2.4p5.
582 OpenSSH has been upgraded to 5.1p1.
584 For many years, FreeBSD's version of OpenSSH preferred DSA
585 over RSA for host and user authentication keys. With this
586 upgrade, we've switched to the vendor's default of RSA over
587 DSA. This may cause upgraded clients to warn about unknown
588 host keys even for previously known hosts. Users should
589 follow the usual procedure for verifying host keys before
590 accepting the RSA key.
592 This can be circumvented by setting the "HostKeyAlgorithms"
593 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
596 Please note that the sequence of keys offered for
597 authentication has been changed as well. You may want to
598 specify IdentityFile in a different order to revert this
602 The sio(4) driver has been removed from the i386 and amd64
603 kernel configuration files. This means uart(4) is now the
604 default serial port driver on those platforms as well.
606 To prevent collisions with the sio(4) driver, the uart(4) driver
607 uses different names for its device nodes. This means the
608 onboard serial port will now most likely be called "ttyu0"
609 instead of "ttyd0". You may need to reconfigure applications to
610 use the new device names.
612 When using the serial port as a boot console, be sure to update
613 /boot/device.hints and /etc/ttys before booting the new kernel.
614 If you forget to do so, you can still manually specify the hints
615 at the loader prompt:
617 set hint.uart.0.at="isa"
618 set hint.uart.0.port="0x3F8"
619 set hint.uart.0.flags="0x10"
620 set hint.uart.0.irq="4"
624 The gpt(8) utility has been removed. Use gpart(8) to partition
628 The version that Linuxulator emulates was changed from 2.4.2
629 to 2.6.16. If you experience any problems with Linux binaries
630 please try to set sysctl compat.linux.osrelease to 2.4.2 and
631 if it fixes the problem contact emulation mailing list.
634 ISDN4BSD (I4B) was removed from the src tree. You may need to
635 update a your kernel configuration and remove relevant entries.
638 I have checked in code to support multiple routing tables.
639 See the man pages setfib(1) and setfib(2).
640 This is a hopefully backwards compatible version,
641 but to make use of it you need to compile your kernel
642 with options ROUTETABLES=2 (or more up to 16).
645 The 802.11 wireless support was redone to enable multi-bss
646 operation on devices that are capable. The underlying device
647 is no longer used directly but instead wlanX devices are
648 cloned with ifconfig. This requires changes to rc.conf files.
650 ifconfig_ath0="WPA DHCP"
653 ifconfig_wlan0="WPA DHCP"
654 see rc.conf(5) for more details. In addition, mergemaster of
655 /etc/rc.d is highly recommended. Simultaneous update of userland
656 and kernel wouldn't hurt either.
658 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
659 modules were merged into the base wlan module. All references
660 to these modules (e.g. in kernel config files) must be removed.
663 psm(4) has gained write(2) support in native operation level.
664 Arbitrary commands can be written to /dev/psm%d and status can
665 be read back from it. Therefore, an application is responsible
666 for status validation and error recovery. It is a no-op in
667 other operation levels.
670 Support for KSE threading has been removed from the kernel. To
671 run legacy applications linked against KSE libmap.conf may
672 be used. The following libmap.conf may be used to ensure
673 compatibility with any prior release:
675 libpthread.so.1 libthr.so.1
676 libpthread.so.2 libthr.so.2
677 libkse.so.3 libthr.so.3
680 The layout of struct vmspace has changed. This affects libkvm
681 and any executables that link against libkvm and use the
682 kvm_getprocs() function. In particular, but not exclusively,
683 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
684 The effects are minimal, but it's advisable to upgrade world
688 The latest em driver no longer has support in it for the
689 82575 adapter, this is now moved to the igb driver. The
690 split was done to make new features that are incompatible
691 with older hardware easier to do.
694 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
695 likewise the kernel option is now GEOM_LINUX_LVM.
698 The default NFS mount mode has changed from UDP to TCP for
699 increased reliability. If you rely on (insecurely) NFS
700 mounting across a firewall you may need to update your
704 Belatedly note the addition of m_collapse for compacting
708 The fts(3) structures have been changed to use adequate
709 integer types for their members and so to be able to cope
710 with huge file trees. The old fts(3) ABI is preserved
711 through symbol versioning in libc, so third-party binaries
712 using fts(3) should still work, although they will not take
713 advantage of the extended types. At the same time, some
714 third-party software might fail to build after this change
715 due to unportable assumptions made in its source code about
716 fts(3) structure members. Such software should be fixed
717 by its vendor or, in the worst case, in the ports tree.
718 FreeBSD_version 800015 marks this change for the unlikely
719 case that a portable fix is impossible.
722 To upgrade to -current after this date, you must be running
723 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
724 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
727 The ADAPTIVE_GIANT kernel option has been retired because its
728 functionality is the default now.
731 The AT keyboard emulation of sunkbd(4) has been turned on
732 by default. In order to make the special symbols of the Sun
733 keyboards driven by sunkbd(4) work under X these now have
734 to be configured the same way as Sun USB keyboards driven
735 by ukbd(4) (which also does AT keyboard emulation), f.e.:
737 Option "XkbLayout" "us"
738 Option "XkbRules" "xorg"
739 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
742 It has been decided that it is desirable to provide ABI
743 backwards compatibility to the FreeBSD 4/5/6 versions of the
744 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
745 broken with the introduction of PCI domain support (see the
746 20070930 entry). Unfortunately, this required the ABI of
747 PCIOCGETCONF to be broken again in order to be able to
748 provide backwards compatibility to the old version of that
749 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
750 again. As for prominent ports this affects neither pciutils
751 nor xorg-server this time, the hal port needs to be rebuilt
755 The misnamed kthread_create() and friends have been renamed
756 to kproc_create() etc. Many of the callers already
758 I will return kthread_create() and friends in a while
759 with implementations that actually create threads, not procs.
760 Renaming corresponds with version 800002.
766 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
767 WITHOUT_LIBTHR are set.
770 The PCI code has been made aware of PCI domains. This means that
771 the location strings as used by pciconf(8) etc are now in the
772 following format: pci<domain>:<bus>:<device>[:<function>]. It
773 also means that consumers of <sys/pciio.h> potentially need to
774 be recompiled; this includes the hal and xorg-server ports.
777 The caching daemon (cached) was renamed to nscd. nscd.conf
778 configuration file should be used instead of cached.conf and
779 nscd_enable, nscd_pidfile and nscd_flags options should be used
780 instead of cached_enable, cached_pidfile and cached_flags in
784 The getfacl(1) utility now prints owning user and group name
785 instead of owning uid and gid in the three line comment header.
786 This is the same behavior as getfacl(1) on Solaris and Linux.
789 The new IPsec code is now compiled in using the IPSEC option. The
790 IPSEC option now requires "device crypto" be defined in your kernel
791 configuration. The FAST_IPSEC kernel option is now deprecated.
794 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
795 note the changed syntax - keep state is now on by default. Also
796 note the fact that ftp-proxy(8) has been changed from bottom up and
797 has been moved from libexec to usr/sbin. Changes in the ALTQ
798 handling also affect users of IPFW's ALTQ capabilities.
801 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
802 only IPsec supported by FreeBSD. The new IPsec stack
803 supports both IPv4 and IPv6. The kernel option will change
804 after the code changes have settled in. For now the kernel
805 option IPSEC is deprecated and FAST_IPSEC is the only option, that
806 will change after some settling time.
809 The wicontrol(8) utility has been removed from the base system. wi(4)
810 cards should be configured using ifconfig(8), see the man page for more
814 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
815 instead of the nve(4) driver. Please update your configuration
819 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
820 database if it is missing or older than the aliases file. If
821 desired, set the new rc.conf option sendmail_rebuild_aliases
822 to "YES" to restore that functionality.
825 The IPv4 multicast socket code has been considerably modified, and
826 moved to the file sys/netinet/in_mcast.c. Initial support for the
827 RFC 3678 Source-Specific Multicast Socket API has been added to
828 the IPv4 network stack.
830 Strict multicast and broadcast reception is now the default for
831 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
832 has now been removed.
834 The RFC 1724 hack for interface selection has been removed; the use
835 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
836 been added to replace it. Consumers such as routed will soon be
837 updated to reflect this.
839 These changes affect users who are running routed(8) or rdisc(8)
840 from the FreeBSD base system on point-to-point or unnumbered
844 The net80211 layer has changed significantly and all wireless
845 drivers that depend on it need to be recompiled. Further these
846 changes require that any program that interacts with the wireless
847 support in the kernel be recompiled; this includes: ifconfig,
848 wpa_supplicant, hostapd, and wlanstats. Users must also, for
849 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
850 if they use modules for wireless support. These modules implement
851 scanning support for station and ap modes, respectively. Failure
852 to load the appropriate module before marking a wireless interface
853 up will result in a message to the console and the device not
857 The pam_nologin(8) module ceases to provide an authentication
858 function and starts providing an account management function.
859 Consequent changes to /etc/pam.d should be brought in using
860 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
861 need manual editing as follows. Locate this line (or similar):
863 auth required pam_nologin.so no_warn
865 and change it according to this example:
867 account required pam_nologin.so no_warn
869 That is, the first word needs to be changed from "auth" to
870 "account". The new line can be moved to the account section
871 within the file for clarity. Not updating pam.conf(5) files
872 will result in nologin(5) ignored by the respective services.
875 The ether_ioctl() function has been synchronized with ioctl(2)
876 and ifnet.if_ioctl. Due to that, the size of one of its arguments
877 has changed on 64-bit architectures. All kernel modules using
878 ether_ioctl() need to be rebuilt on such architectures.
881 Improved INCLUDE_CONFIG_FILE support has been introduced to the
882 config(8) utility. In order to take advantage of this new
883 functionality, you are expected to recompile and install
884 src/usr.sbin/config. If you don't rebuild config(8), and your
885 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
886 build will be broken because of a missing "kernconfstring"
890 Symbol versioning is enabled by default. To disable it, use
891 option WITHOUT_SYMVER. It is not advisable to attempt to
892 disable symbol versioning once it is enabled; your installworld
893 will break because a symbol version-less libc will get installed
894 before the install tools. As a result, the old install tools,
895 which previously had symbol dependencies to FBSD_1.0, will fail
896 because the freshly installed libc will not have them.
898 The default threading library (providing "libpthread") has been
899 changed to libthr. If you wish to have libkse as your default,
900 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
903 The ABI breakage in sendmail(8)'s libmilter has been repaired
904 so it is no longer necessary to recompile mail filters (aka,
905 milters). If you recompiled mail filters after the 20070408
906 note, it is not necessary to recompile them again.
909 The new trunk(4) driver has been renamed to lagg(4) as it better
910 reflects its purpose. ifconfig will need to be recompiled.
913 sendmail(8) has been updated to version 8.14.1. Mail filters
914 (aka, milters) compiled against the libmilter included in the
915 base operating system should be recompiled.
918 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
919 In order to use them one must agree to the respective LICENSE in
920 share/doc/legal and define legal.intel_<name>.license_ack=1 via
921 loader.conf(5) or kenv(1). Make sure to deinstall the now
922 deprecated modules from the respective firmware ports.
925 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
926 were removed from FreeBSD's libc. These originally came from INRIA
927 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
928 deprecated in previous releases.
929 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
930 replace it as a more portable (and re-entrant) API.
933 To support interrupt filtering a modification to the newbus API
934 has occurred, ABI was broken and __FreeBSD_version was bumped
935 to 700031. Please make sure that your kernel and modules are in
937 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
940 The IPv6 multicast forwarding code may now be loaded into GENERIC
941 kernels by loading the ip_mroute.ko module. This is built into the
942 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
943 set; see src.conf(5) for more information.
946 The output of netstat -r has changed. Without -n, we now only
947 print a "network name" without the prefix length if the network
948 address and mask exactly match a Class A/B/C network, and an entry
949 exists in the nsswitch "networks" map.
950 With -n, we print the full unabbreviated CIDR network prefix in
951 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
952 This change is in preparation for changes such as equal-cost
953 multipath, and to more generally assist operational deployment
954 of FreeBSD as a modern IPv4 router.
957 PIM has been turned on by default in the IPv4 multicast
958 routing code. The kernel option 'PIM' has now been removed.
959 PIM is now built by default if option 'MROUTING' is specified.
960 It may now be loaded into GENERIC kernels by loading the
964 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
965 has been removed. Its functionality may be achieved by explicitly
966 configuring gif(4) interfaces and using the 'phyint' keyword in
968 XORP does not support source-routed IPv4 multicast tunnels nor the
969 integrated IPIP tunneling, therefore it is not affected by this
970 change. The __FreeBSD_version macro has been bumped to 700030.
973 Support for PCI Message Signalled Interrupts has been
974 re-enabled in the bge driver, only for those chips which are
975 believed to support it properly. If there are any problems,
976 MSI can be disabled completely by setting the
977 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
981 Support for PCI Message Signalled Interrupts has been
982 disabled again in the bge driver. Many revisions of the
983 hardware fail to support it properly. Support can be
984 re-enabled by removing the #define of BGE_DISABLE_MSI in
985 "src/sys/dev/bge/if_bge.c".
988 Support for PCI Message Signalled Interrupts has been added
989 to the bge driver. If there are any problems, MSI can be
990 disabled completely by setting the 'hw.pci.enable_msi' and
991 'hw.pci.enable_msix' tunables to 0 in the loader.
994 The removal of several facets of the experimental Threading
995 system from the kernel means that the proc and thread structures
996 have changed quite a bit. I suggest all kernel modules that might
997 reference these structures be recompiled.. Especially the
1001 Sound infrastructure has been updated with various fixes and
1002 improvements. Most of the changes are pretty much transparent,
1003 with exceptions of followings:
1004 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1005 moved to their own dev sysctl nodes, for example:
1006 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1007 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1008 own chardev in the form of "dsp%d.<function>%d", where <function>
1009 is p = playback, r = record and v = virtual, respectively. Users
1010 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1011 This does not affect those who are using "/dev/dsp".
1014 geom(4)'s gmirror(8) class metadata structure has been
1015 rev'd from v3 to v4. If you update across this point and
1016 your metadata is converted for you, you will not be easily
1017 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1018 kernel module will be unable to read the v4 metadata. You
1019 can resolve this by doing from the loader(8) prompt:
1021 set vfs.root.mountfrom="ufs:/dev/XXX"
1023 where XXX is the root slice of one of the disks that composed
1024 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1025 the array the same way you built it originally.
1028 The following binaries have been disconnected from the build:
1029 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1030 and mount_std. The functionality of these programs has been
1031 moved into the mount program. For example, to mount a devfs
1032 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1033 This does not affect entries in /etc/fstab, since entries in
1034 /etc/fstab are always processed with "mount -t fstype".
1037 Support for PCI Message Signalled Interrupts on i386 and amd64
1038 has been added to the kernel and various drivers will soon be
1039 updated to use MSI when it is available. If there are any problems,
1040 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1041 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1044 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1045 The lockmgr object layout has been changed as a result of having
1046 a lock_object embedded in it. As a consequence all file system
1047 kernel modules must be re-compiled. The mutex profiling man page
1048 has not yet been updated to reflect this change.
1051 KSE in the kernel has now been made optional and turned on by
1052 default. Use 'nooption KSE' in your kernel config to turn it
1053 off. All kernel modules *must* be recompiled after this change.
1054 There-after, modules from a KSE kernel should be compatible with
1055 modules from a NOKSE kernel due to the temporary padding fields
1056 added to 'struct proc'.
1059 mrouted and its utilities have been removed from the base system.
1062 Some ioctl(2) command codes have changed. Full backward ABI
1063 compatibility is provided if the "options COMPAT_FREEBSD6" is
1064 present in the kernel configuration file. Make sure to add
1065 this option to your kernel config file, or recompile X.Org
1066 and the rest of ports; otherwise they may refuse to work.
1069 tcpslice has been removed from the base system.
1072 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1073 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1074 systat needs to be rebuilt.
1077 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1080 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1081 for IPFIREWALL_FORWARD is now as it was before when it was first
1082 committed and for years after. The behaviour is now ON.
1085 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1086 Now it can decrypt files created from different architectures.
1087 Unfortunately, it is no longer able to decrypt a cipher text
1088 generated with an older version on 64 bit architectures.
1089 If you have such a file, you need old utility to decrypt it.
1092 The interface version of the i4b kernel part has changed. So
1093 after updating the kernel sources and compiling a new kernel,
1094 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1095 be rebuilt, and vice versa.
1098 The XBOX kernel now defaults to the nfe(4) driver instead of
1099 the nve(4) driver. Please update your configuration
1103 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1104 PCnet family of NICs has been removed. The new le(4) driver serves
1105 as an equivalent but cross-platform replacement with the pcn(4)
1106 driver still providing performance-optimized support for the subset
1107 of AMD Am79C971 PCnet-FAST and greater chips as before.
1110 The machdep.* sysctls and the adjkerntz utility have been
1111 modified a bit. The new adjkerntz utility uses the new
1112 sysctl names and sysctlbyname() calls, so it may be impossible
1113 to run an old /sbin/adjkerntz utility in single-user mode
1114 with a new kernel. Replace the `adjkerntz -i' step before
1115 `make installworld' with:
1117 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1119 and proceed as usual with the rest of the installworld-stage
1120 steps. Otherwise, you risk installing binaries with their
1121 timestamp set several hours in the future, especially if
1122 you are running with local time set to GMT+X hours.
1125 The ip6fw utility has been removed. The behavior provided by
1126 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1127 have been updated to deal with it. There are some rules that
1128 might not migrate cleanly. Use rc.firewall6 as a template to
1132 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1133 attachments have been removed. Make sure to configure scc(4)
1134 on sparc64. Note also that by default puc(4) will use uart(4)
1135 and not sio(4) for serial ports because interrupt handling has
1136 been optimized for multi-port serial cards and only uart(4)
1137 implements the interface to support it.
1140 The scc(4) driver replaces puc(4) for Serial Communications
1141 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1142 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1143 configuration to make sure that the serial ports remain
1147 Most world/kernel related NO_* build options changed names.
1148 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1149 after FreeBSD ports) and should be set in /etc/src.conf
1150 (the src.conf(5) manpage is provided). Full backwards
1151 compatibility is maintained for the time being though it's
1152 highly recommended to start moving old options out of the
1153 system-wide /etc/make.conf file into the new /etc/src.conf
1154 while also properly renaming them. More conversions will
1155 likely follow. Posting to current@:
1157 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1160 The NETSMBCRYPTO kernel option has been retired because its
1161 functionality is always included in NETSMB and smbfs.ko now.
1164 The TDFX_LINUX kernel option was retired and replaced by the
1165 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1166 kernel module. Loading it alone should suffice to get 3dfx support
1167 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1171 The 'audit' group was added to support the new auditing functionality
1172 in the base system. Be sure to follow the directions for updating,
1173 including the requirement to run mergemaster -p.
1176 The kernel ABI to file system modules was changed on i386.
1177 Please make sure that your kernel and modules are in sync.
1180 This actually occured some time ago, but installing the kernel
1181 now also installs a bunch of symbol files for the kernel modules.
1182 This increases the size of /boot/kernel to about 67Mbytes. You
1183 will need twice this if you will eventually back this up to kernel.old
1184 on your next install.
1185 If you have a shortage of room in your root partition, you should add
1186 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1187 to your /etc/make.conf.
1190 libc's malloc implementation has been replaced. This change has the
1191 potential to uncover application bugs that previously went unnoticed.
1192 See the malloc(3) manual page for more details.
1195 The generic netgraph(4) cookie has been changed. If you upgrade
1196 kernel passing this point, you also need to upgrade userland
1197 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1200 si(4)'s device files now contain the unit number.
1201 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1204 The kernel ABI was mostly destroyed due to a change in the size
1205 of struct lock_object which is nested in other structures such
1206 as mutexes which are nested in all sorts of other structures.
1207 Make sure your kernel and modules are in sync.
1210 The page coloring algorithm in the VM subsystem was converted
1211 from tuning with kernel options to autotuning. Please remove
1212 any PQ_* option except PQ_NOOPT from your kernel config.
1215 The net80211-related tools in the tools/tools/ath directory
1216 have been moved to tools/tools/net80211 and renamed with a
1217 "wlan" prefix. Scripts that use them should be adjusted
1221 Scripts in the local_startup directories (as defined in
1222 /etc/defaults/rc.conf) that have the new rc.d semantics will
1223 now be run as part of the base system rcorder. If there are
1224 errors or problems with one of these local scripts, it could
1225 cause boot problems. If you encounter such problems, boot in
1226 single user mode, remove that script from the */rc.d directory.
1227 Please report the problem to the port's maintainer, and the
1228 freebsd-ports@freebsd.org mailing list.
1231 The nodev mount option was deprecated in RELENG_6 (where it
1232 was a no-op), and is now unsupported. If you have nodev or dev listed
1233 in /etc/fstab, remove it, otherwise it will result in a mount error.
1236 ABI between ipfw(4) and ipfw(8) has been changed. You need
1237 to rebuild ipfw(8) when rebuilding kernel.
1240 rp(4)'s device files now contain the unit number.
1241 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1244 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1245 Its /etc/rc.conf.d configuration file has been `ppp' from
1246 the beginning, and hence there is no need to touch it.
1249 Now most modules get their build-time options from the kernel
1250 configuration file. A few modules still have fixed options
1251 due to their non-conformant implementation, but they will be
1252 corrected eventually. You may need to review the options of
1253 the modules in use, explicitly specify the non-default options
1254 in the kernel configuration file, and rebuild the kernel and
1258 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1259 to turn polling(4) on your interfaces.
1262 The old bridge(4) implementation was retired. The new
1263 if_bridge(4) serves as a full functional replacement.
1266 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1267 to conform to POSIX-2001. This change broke an ABI
1268 compatibility on 64 bit architecture. You have to recompile
1269 userland programs that use getaddrinfo(3) on 64 bit
1273 RELENG_6 branched here.
1276 The pccard_ifconfig rc.conf variable has been removed and a new
1277 variable, ifconfig_DEFAULT has been introduced. Unlike
1278 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1279 do not have ifconfig_ifn entries rather than just those in
1280 removable_interfaces.
1283 Some previous versions of PAM have permitted the use of
1284 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1285 to third party PAM modules in /usr/local/lib. A change has been
1286 made to require the use of absolute paths in order to avoid
1287 ambiguity and dependence on library path configuration, which may
1288 affect existing configurations.
1291 Major changes to network interface API. All drivers must be
1292 recompiled. Drivers not in the base system will need to be
1293 updated to the new APIs.
1296 Changes were made to kinfo_proc in sys/user.h. Please recompile
1297 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1298 will not behave correctly.
1300 The API and ABI for hwpmc(4) have changed with the addition
1301 of sampling support. Please recompile lib/libpmc(3) and
1302 usr.sbin/{pmcstat,pmccontrol}.
1305 The OpenBSD dhclient was imported in place of the ISC dhclient
1306 and the network interface configuration scripts were updated
1307 accordingly. If you use DHCP to configure your interfaces, you
1308 must now run devd. Also, DNS updating was lost so you will need
1309 to find a workaround if you use this feature.
1311 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1312 sure to run mergemaster -p (like you are supposed to do every time
1316 if_bridge was added to the tree. This has changed struct ifnet.
1317 Please recompile userland and all network related modules.
1320 The n_net of a struct netent was changed to an uint32_t, and
1321 1st argument of getnetbyaddr() was changed to an uint32_t, to
1322 conform to POSIX-2001. These changes broke an ABI
1323 compatibility on 64 bit architecture. With these changes,
1324 shlib major of libpcap was bumped. You have to recompile
1325 userland programs that use getnetbyaddr(3), getnetbyname(3),
1326 getnetent(3) and/or libpcap on 64 bit architecture.
1329 Kernel parsing of extra options on '#!' first lines of shell
1330 scripts has changed. Lines with multiple options likely will
1331 fail after this date. For full details, please see
1332 http://people.freebsd.org/~gad/Updating-20050528.txt
1335 The packet filter (pf) code has been updated to OpenBSD 3.7
1336 Please note the changed anchor syntax and the fact that
1337 authpf(8) now needs a mounted fdescfs(5) to function.
1340 The NO_MIXED_MODE kernel option has been removed from the i386
1341 amd64 platforms as its use has been superceded by the new local
1342 APIC timer code. Any kernel config files containing this option
1346 The on-disk format of LC_CTYPE files was changed to be machine
1347 independent. Please make sure NOT to use NO_CLEAN buildworld
1348 when crossing this point. Crossing this point also requires
1349 recompile or reinstall of all locale depended packages.
1352 The ifi_epoch member of struct if_data has been changed to
1353 contain the uptime at which the interface was created or the
1354 statistics zeroed rather then the wall clock time because
1355 wallclock time may go backwards. This should have no impact
1356 unless an snmp implementation is using this value (I know of
1357 none at this point.)
1360 The acpi_perf and acpi_throttle drivers are now part of the
1361 acpi(4) main module. They are no longer built separately.
1364 The layout of struct image_params has changed. You have to
1365 recompile all compatibility modules (linux, svr4, etc) for use
1366 with the new kernel.
1369 The p4tcc driver has been merged into cpufreq(4). This makes
1370 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1371 compile in "device cpufreq" to restore this functionality.
1374 The responsibility of recomputing the file system summary of
1375 a SoftUpdates-enabled dirty volume has been transferred to the
1376 background fsck. A rebuild of fsck(8) utility is recommended
1377 if you have updated the kernel.
1379 To get the old behavior (recompute file system summary at mount
1380 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1381 mounting the new volume.
1384 The cpufreq import is complete. As part of this, the sysctls for
1385 acpi(4) throttling have been removed. The power_profile script
1386 has been updated, so you can use performance/economy_cpu_freq in
1387 rc.conf(5) to set AC on/offline cpu frequencies.
1390 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1391 requires recompiling libnetgraph and userland netgraph utilities.
1394 Support for abbreviated forms of a number of ipfw options is
1395 now deprecated. Warnings are printed to stderr indicating the
1396 correct full form when a match occurs. Some abbreviations may
1397 be supported at a later date based on user feedback. To be
1398 considered for support, abbreviations must be in use prior to
1399 this commit and unlikely to be confused with current key words.
1402 By a popular demand, a lot of NOFOO options were renamed
1403 to NO_FOO (see bsd.compat.mk for a full list). The old
1404 spellings are still supported, but will cause annoying
1405 warnings on stderr. Make sure you upgrade properly (see
1406 the COMMON ITEMS: section later in this file).
1409 Auto-loading of ancillary wlan modules such as wlan_wep has
1410 been temporarily disabled; you need to statically configure
1411 the modules you need into your kernel or explicitly load them
1412 prior to use. Specifically, if you intend to use WEP encryption
1413 with an 802.11 device load/configure wlan_wep; if you want to
1414 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1415 and wlan_xauth as required.
1418 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1419 (``enable lqr''), older versions would revert to LCP ECHO mode on
1420 negotiation failure. Now, ``enable echo'' is required for this
1421 behaviour. The ppp version number has been bumped to 3.4.2 to
1425 The wlan support has been updated to split the crypto support
1426 into separate modules. For static WEP you must configure the
1427 wlan_wep module in your system or build and install the module
1428 in place where it can be loaded (the kernel will auto-load
1429 the module when a wep key is configured).
1432 The ath driver has been updated to split the tx rate control
1433 algorithm into a separate module. You need to include either
1434 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1437 Support for systems with an 80386 CPU has been removed. Please
1438 use FreeBSD 5.x or earlier on systems with an 80386.
1441 We have had a hack which would mount the root filesystem
1442 R/W if the device were named 'md*'. As part of the vnode
1443 work I'm doing I have had to remove this hack. People
1444 building systems which use preloaded MD root filesystems
1445 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1446 their /etc/rc scripts.
1449 FreeBSD 5.3 shipped here.
1452 The size of struct tcpcb has changed again due to the removal
1453 of RFC1644 T/TCP. You have to recompile userland programs that
1454 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1457 The size of struct tcpcb has changed. You have to recompile
1458 userland programs that read kmem for tcp sockets directly
1459 (netstat, sockstat, etc.)
1462 RELENG_5 branched here. For older entries, please see updating
1463 in the RELENG_5 branch.
1469 Avoid using make -j when upgrading. From time to time in the
1470 past there have been problems using -j with buildworld and/or
1471 installworld. This is especially true when upgrading between
1472 "distant" versions (eg one that cross a major release boundary
1473 or several minor releases, or when several months have passed
1474 on the -current branch).
1476 Sometimes, obscure build problems are the result of environment
1477 poisoning. This can happen because the make utility reads its
1478 environment when searching for values for global variables.
1479 To run your build attempts in an "environmental clean room",
1480 prefix all make commands with 'env -i '. See the env(1) manual
1481 page for more details.
1483 When upgrading from one major version to another it is generally
1484 best to upgrade to the latest code in the currently installed branch
1485 first, then do an upgrade to the new branch. This is the best-tested
1486 upgrade path, and has the highest probability of being successful.
1487 Please try this approach before reporting problems with a major
1492 If you are updating from a prior version of FreeBSD (even one just
1493 a few days old), you should follow this procedure. It is the most
1494 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1496 make kernel-toolchain
1497 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1498 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1500 To test a kernel once
1501 ---------------------
1502 If you just want to boot a kernel once (because you are not sure
1503 if it works, or if you want to boot a known bad kernel to provide
1504 debugging information) run
1505 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1506 nextboot -k testkernel
1508 To just build a kernel when you know that it won't mess you up
1509 --------------------------------------------------------------
1510 This assumes you are already running a 5.X system. Replace
1511 ${arch} with the architecture of your machine (e.g. "i386",
1512 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1514 cd src/sys/${arch}/conf
1515 config KERNEL_NAME_HERE
1516 cd ../compile/KERNEL_NAME_HERE
1521 If this fails, go to the "To build a kernel" section.
1523 To rebuild everything and install it on the current system.
1524 -----------------------------------------------------------
1525 # Note: sometimes if you are running current you gotta do more than
1526 # is listed here if you are upgrading from a really old current.
1528 <make sure you have good level 0 dumps>
1530 make kernel KERNCONF=YOUR_KERNEL_HERE
1532 <reboot in single user> [3]
1540 To cross-install current onto a separate partition
1541 --------------------------------------------------
1542 # In this approach we use a separate partition to hold
1543 # current's root, 'usr', and 'var' directories. A partition
1544 # holding "/", "/usr" and "/var" should be about 2GB in
1547 <make sure you have good level 0 dumps>
1550 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1551 <maybe newfs current's root partition>
1552 <mount current's root partition on directory ${CURRENT_ROOT}>
1553 make installworld DESTDIR=${CURRENT_ROOT}
1554 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1555 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1556 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1557 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1558 <reboot into current>
1559 <do a "native" rebuild/install as described in the previous section>
1560 <maybe install compatibility libraries from ports/misc/compat*>
1564 To upgrade in-place from 5.x-stable to current
1565 ----------------------------------------------
1566 <make sure you have good level 0 dumps>
1568 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1570 <reboot in single user> [3]
1577 Make sure that you've read the UPDATING file to understand the
1578 tweaks to various things you need. At this point in the life
1579 cycle of current, things change often and you are on your own
1580 to cope. The defaults can also change, so please read ALL of
1581 the UPDATING entries.
1583 Also, if you are tracking -current, you must be subscribed to
1584 freebsd-current@freebsd.org. Make sure that before you update
1585 your sources that you have read and understood all the recent
1586 messages there. If in doubt, please track -stable which has
1587 much fewer pitfalls.
1589 [1] If you have third party modules, such as vmware, you
1590 should disable them at this point so they don't crash your
1593 [3] From the bootblocks, boot -s, and then do
1598 adjkerntz -i # if CMOS is wall time
1599 Also, when doing a major release upgrade, it is required that
1600 you boot into single user mode to do the installworld.
1602 [4] Note: This step is non-optional. Failure to do this step
1603 can result in a significant reduction in the functionality of the
1604 system. Attempting to do it by hand is not recommended and those
1605 that pursue this avenue should read this file carefully, as well
1606 as the archives of freebsd-current and freebsd-hackers mailing lists
1607 for potential gotchas.
1609 [5] Usually this step is a noop. However, from time to time
1610 you may need to do this if you get unknown user in the following
1611 step. It never hurts to do it all the time. You may need to
1612 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1613 install) after the buildworld before this step if you last updated
1614 from current before 20020224 or from -stable before 20020408.
1616 [8] In order to have a kernel that can run the 4.x binaries
1617 needed to do an installworld, you must include the COMPAT_FREEBSD4
1618 option in your kernel. Failure to do so may leave you with a system
1619 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1620 is required to run the 5.x binaries on more recent kernels.
1622 Make sure that you merge any new devices from GENERIC since the
1623 last time you updated your kernel config file.
1625 [9] When checking out sources, you must include the -P flag to have
1626 cvs prune empty directories.
1628 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1629 "?=" instead of the "=" assignment operator, so that buildworld can
1630 override the CPUTYPE if it needs to.
1632 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1633 not on the command line, or in /etc/make.conf. buildworld will
1634 warn if it is improperly defined.
1637 This file contains a list, in reverse chronological order, of major
1638 breakages in tracking -current. Not all things will be listed here,
1639 and it only starts on October 16, 2004. Updating files can found in
1640 previous releases if your system is older than this.
1642 Copyright information:
1644 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1646 Redistribution, publication, translation and use, with or without
1647 modification, in full or in part, in any form or format of this
1648 document are permitted without further permission from the author.
1650 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1651 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1652 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1653 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1654 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1655 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1656 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1657 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1658 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1659 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1660 POSSIBILITY OF SUCH DAMAGE.
1662 If you find this document useful, and you want to, you may buy the
1665 Contact Warner Losh if you have any questions about your use of