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 The NFS_LEGACYRPC option has been removed along with the old
27 kernel RPC implementation that this option selected. Kernel
28 configurations may need to be adjusted.
31 The network interface device nodes at /dev/net/<interface> have
32 been removed. All ioctl operations can be performed the normal
33 way using routing sockets. The kqueue functionality can
34 generally be replaced with routing sockets.
37 The documentation from the FreeBSD Documentation Project
38 (Handbook, FAQ, etc.) is now installed via packages by
39 sysinstall(8) and under the /usr/local/share/doc/freebsd
40 directory instead of /usr/share/doc.
43 The ABI of various structures related to the SYSV IPC API have
44 been changed. As a result, the COMPAT_FREEBSD[456] kernel
45 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version
49 Layout of struct vnet has changed as routing related variables
50 were moved to their own Vimage module. Modules need to be
51 recompiled. Bump __FreeBSD_version to 800099.
54 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
55 and 1024 respectively. As long as no more than 16 groups per
56 process are used, no changes should be visible. When more
57 than 16 groups are used, old binaries may fail if they call
58 getgroups() or getgrouplist() with statically sized storage.
59 Recompiling will work around this, but applications should be
60 modified to use dynamically allocated storage for group arrays
61 as POSIX.1-2008 does not cap an implementation's number of
62 supported groups at NGROUPS_MAX+1 as previous versions did.
64 NFS and portalfs mounts may also be affected as the list of
65 groups is truncated to 16. Users of NFS who use more than 16
66 groups, should take care that negative group permissions are not
67 used on the exported file systems as they will not be reliable
68 unless a GSSAPI based authentication method is used.
71 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
72 This option compiles in the support for adaptive spinning for lockmgrs
73 which want to enable it. The lockinit() function now accepts the
74 flag LK_ADAPTIVE in order to make the lock object subject to
75 adaptive spinning when both held in write and read mode.
78 The layout of the structure returned by IEEE80211_IOC_STA_INFO
79 has changed. User applications that use this ioctl need to be
83 The layout of struct thread has changed. Kernel and modules
87 The layout of structs ifnet, domain, protosw and vnet_net has
88 changed. Kernel modules need to be rebuilt.
89 Bump __FreeBSD_version to 800097.
92 window(1) has been removed from the base system. It can now be
93 installed from ports. The port is called misc/window.
96 The way we are storing and accessing `routing table' entries
97 has changed. Programs reading the FIB, like netstat, need to
101 A new netisr implementation has been added for FreeBSD 8. Network
102 file system modules, such as igmp, ipdivert, and others, should be
104 Bump __FreeBSD_version to 800096.
107 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
111 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
112 Bump __FreeBSD_version to 800094.
115 Add mnt_xflag field to 'struct mount'. File system modules
117 Bump __FreeBSD_version to 800093.
120 The compiling option ADAPTIVE_SX has been retired while it has been
121 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
122 The KPI for sx_init_flags() changes as accepting flags:
123 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
124 has been introduced in order to handle the reversed logic.
125 Bump __FreeBSD_version to 800092.
128 Add support for hierarchical jails. Remove global securelevel.
129 Bump __FreeBSD_version to 800091.
132 The layout of struct vnet_net has changed, therefore modules
134 Bump __FreeBSD_version to 800090.
137 The newly imported zic(8) produces a new format in the
138 output. Please run tzsetup(8) to install the newly created
139 data to /etc/localtime.
142 The sysctl tree for the usb stack has renamed from hw.usb2.* to
143 hw.usb.* and is now consistent again with previous releases.
146 802.11 monitor mode support was revised and driver api's
147 were changed. Drivers dependent on net80211 now support
148 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
149 user-visible data structures were changed but applications
150 that use DLT_IEEE802_11 may require changes.
151 Bump __FreeBSD_version to 800088.
154 The layout of the following structs has changed: sysctl_oid,
155 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
156 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
157 panics may be experienced. World rebuild is required for
158 correctly checking networking state from userland.
159 Bump __FreeBSD_version to 800085.
162 MLDv2 and Source-Specific Multicast (SSM) have been merged
163 to the IPv6 stack. VIMAGE hooks are in but not yet used.
164 The implementation of SSM within FreeBSD's IPv6 stack closely
165 follows the IPv4 implementation.
167 For kernel developers:
169 * The most important changes are that the ip6_output() and
170 ip6_input() paths no longer take the IN6_MULTI_LOCK,
171 and this lock has been downgraded to a non-recursive mutex.
173 * As with the changes to the IPv4 stack to support SSM, filtering
174 of inbound multicast traffic must now be performed by transport
175 protocols within the IPv6 stack. This does not apply to TCP and
176 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
178 * The KPIs used by IPv6 multicast are similar to those used by
179 the IPv4 stack, with the following differences:
180 * im6o_mc_filter() is analogous to imo_multicast_filter().
181 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
182 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
183 * IN6_LOOKUP_MULTI() has been deprecated and removed.
184 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
185 for MLDv1 have an additional 'timer' argument which is used to
186 jitter the initial membership report for the solicited-node
187 multicast membership on-link.
188 * This is not strictly needed for MLDv2, which already jitters
189 its report transmissions. However, the 'timer' argument is
190 preserved in case MLDv1 is active on the interface.
192 * The KAME linked-list based IPv6 membership implementation has
193 been refactored to use a vector similar to that used by the IPv4
195 Code which maintains a list of its own multicast memberships
196 internally, e.g. carp, has been updated to reflect the new
199 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
200 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
201 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
202 implementation constraint which needs to be addressed in HEAD.
204 For application developers:
206 * The changes are broadly similar to those made for the IPv4
209 * The use of IPv4 and IPv6 multicast socket options on the same
210 socket, using mapped addresses, HAS NOT been tested or supported.
212 * There are a number of issues with the implementation of various
213 IPv6 multicast APIs which need to be resolved in the API surface
214 before the implementation is fully compatible with KAME userland
215 use, and these are mostly to do with interface index treatment.
217 * The literature available discusses the use of either the delta / ASM
218 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
219 using setsourcefilter(3)/getsourcefilter(3). For more information
220 please refer to RFC 3768, 'Socket Interface Extensions for
221 Multicast Source Filters'.
223 * Applications which use the published RFC 3678 APIs should be fine.
225 For systems administrators:
227 * The mtest(8) utility has been refactored to support IPv6, in
228 addition to IPv4. Interface addresses are no longer accepted
229 as arguments, their names must be used instead. The utility
230 will map the interface name to its first IPv4 address as
231 returned by getifaddrs(3).
233 * The ifmcstat(8) utility has also been updated to print the MLDv2
234 endpoint state and source filter lists via sysctl(3).
236 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
237 loopback of IPv6 multicast datagrams by default; it defaults to 1
238 to preserve the existing behaviour. Disabling multicast loopback is
239 recommended for optimal system performance.
241 * The IPv6 MROUTING code has been changed to examine this sysctl
242 instead of attempting to perform a group lookup before looping
243 back forwarded datagrams.
245 Bump __FreeBSD_version to 800084.
248 Implement low-level Bluetooth HCI API.
249 Bump __FreeBSD_version to 800083.
252 The layout of struct malloc_type, used by modules to register new
253 memory allocation types, has changed. Most modules will need to
254 be rebuilt or panics may be experienced.
255 Bump __FreeBSD_version to 800081.
258 Anticipate overflowing inp_flags - add inp_flags2.
259 This changes most offsets in inpcb, so checking v4 connection
260 state will require a world rebuild.
261 Bump __FreeBSD_version to 800080.
264 Add an llentry to struct route and struct route_in6. Modules
265 embedding a struct route will need to be recompiled.
266 Bump __FreeBSD_version to 800079.
269 The size of rt_metrics_lite and by extension rtentry has changed.
270 Networking administration apps will need to be recompiled.
271 The route command now supports show as an alias for get, weighting
272 of routes, sticky and nostick flags to alter the behavior of stateful
274 Bump __FreeBSD_version to 800078.
277 Do not use Giant for kbdmux(4) locking. This is wrong and
278 apparently causing more problems than it solves. This will
279 re-open the issue where interrupt handlers may race with
280 kbdmux(4) in polling mode. Typical symptoms include (but
281 not limited to) duplicated and/or missing characters when
282 low level console functions (such as gets) are used while
283 interrupts are enabled (for example geli password prompt,
284 mountroot prompt etc.). Disabling kbdmux(4) may help.
287 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
288 kernel modules referencing any of the above need to be recompiled.
289 Bump __FreeBSD_version to 800075.
292 GEOM_PART has become the default partition slicer for storage devices,
293 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
294 introduces some changes:
296 MSDOS/EBR: the devices created from MSDOS extended partition entries
297 (EBR) can be named differently than with GEOM_MBR and are now symlinks
298 to devices with offset-based names. fstabs may need to be modified.
300 BSD: the "geometry does not match label" warning is harmless in most
301 cases but it points to problems in file system misalignment with
302 disk geometry. The "c" partition is now implicit, covers the whole
303 top-level drive and cannot be (mis)used by users.
305 General: Kernel dumps are now not allowed to be written to devices
306 whose partition types indicate they are meant to be used for file
307 systems (or, in case of MSDOS partitions, as something else than
310 Most of these changes date approximately from 200812.
313 The uscanner(4) driver has been removed from the kernel. This follows
314 Linux removing theirs in 2.6 and making libusb the default interface
318 The multicast forwarding code has been cleaned up. netstat(1)
319 only relies on KVM now for printing bandwidth upcall meters.
320 The IPv4 and IPv6 modules are split into ip_mroute_mod and
321 ip6_mroute_mod respectively. The config(5) options for statically
322 compiling this code remain the same, i.e. 'options MROUTING'.
325 Support for the IFF_NEEDSGIANT network interface flag has been
326 removed, which means that non-MPSAFE network device drivers are no
327 longer supported. In particular, if_ar, if_sr, and network device
328 drivers from the old (legacy) USB stack can no longer be built or
332 POSIX.1 Native Language Support (NLS) has been enabled in libc and
333 a bunch of new language catalog files have also been added.
334 This means that some common libc messages are now localized and
335 they depend on the LC_MESSAGES environmental variable.
338 The k8temp(4) driver has been renamed to amdtemp(4) since
339 support for K10 and K11 CPU families was added.
342 IGMPv3 and Source-Specific Multicast (SSM) have been merged
343 to the IPv4 stack. VIMAGE hooks are in but not yet used.
345 For kernel developers, the most important changes are that the
346 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
347 and this lock has been downgraded to a non-recursive mutex.
349 Transport protocols (UDP, Raw IP) are now responsible for filtering
350 inbound multicast traffic according to group membership and source
351 filters. The imo_multicast_filter() KPI exists for this purpose.
352 Transports which do not use multicast (SCTP, TCP) already reject
353 multicast by default. Forwarding and receive performance may improve
354 as a mutex acquisition is no longer needed in the ip_input()
355 low-level input path. in_addmulti() and in_delmulti() are shimmed
356 to new KPIs which exist to support SSM in-kernel.
358 For application developers, it is recommended that loopback of
359 multicast datagrams be disabled for best performance, as this
360 will still cause the lock to be taken for each looped-back
361 datagram transmission. The net.inet.ip.mcast.loop sysctl may
362 be tuned to 0 to disable loopback by default; it defaults to 1
363 to preserve the existing behaviour.
365 For systems administrators, to obtain best performance with
366 multicast reception and multiple groups, it is always recommended
367 that a card with a suitably precise hash filter is used. Hash
368 collisions will still result in the lock being taken within the
369 transport protocol input path to check group membership.
371 If deploying FreeBSD in an environment with IGMP snooping switches,
372 it is recommended that the net.inet.igmp.sendlocal sysctl remain
373 enabled; this forces 224.0.0.0/24 group membership to be announced
376 The size of 'struct igmpstat' has changed; netstat needs to be
377 recompiled to reflect this.
378 Bump __FreeBSD_version to 800070.
381 libusb20.so.1 is now installed as libusb.so.1 and the ports system
382 updated to use it. This requires a buildworld/installworld in order to
383 update the library and dependencies (usbconfig, etc). Its advisable to
384 rebuild all ports which uses libusb. More specific directions are given
385 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
386 libusb are no longer required and can be removed.
389 A workaround is committed to allow the creation of System V shared
390 memory segment of size > 2 GB on the 64-bit architectures.
391 Due to a limitation of the existing ABI, the shm_segsz member
392 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
393 wrong for large segments. Note that limits must be explicitly
394 raised to allow such segments to be created.
397 The layout of struct ifnet has changed, requiring a rebuild of all
398 network device driver modules.
401 The /dev handling for the new USB stack has changed, a
402 buildworld/installworld is required for libusb20.
405 The new USB2 stack has now been permanently moved in and all kernel and
406 module names reverted to their previous values (eg, usb, ehci, ohci,
407 ums, ...). The old usb stack can be compiled in by prefixing the name
408 with the letter 'o', the old usb modules have been removed.
409 Updating entry 20090216 for xorg and 20090215 for libmap may still
413 The rc.conf(5) option if_up_delay has been renamed to
414 defaultroute_delay to better reflect its purpose. If you have
415 customized this setting in /etc/rc.conf you need to update it to
419 xorg 7.4 wants to configure its input devices via hald which does not
420 yet work with USB2. If the keyboard/mouse does not work in xorg then
422 Option "AllowEmptyInput" "off"
423 to your ServerLayout section. This will cause X to use the configured
424 kbd and mouse sections from your xorg.conf.
427 The GENERIC kernels for all architectures now default to the new USB2
428 stack. No kernel config options or code have been removed so if a
429 problem arises please report it and optionally revert to the old USB
430 stack. If you are loading USB kernel modules or have a custom kernel
431 that includes GENERIC then ensure that usb names are also changed over,
432 eg uftdi -> usb2_serial_ftdi.
434 Older programs linked against the ports libusb 0.1 need to be
435 redirected to the new stack's libusb20. /etc/libmap.conf can
437 # Map old usb library to new one for usb2 stack
438 libusb-0.1.so.8 libusb20.so.1
441 The ichsmb(4) driver has been changed to require SMBus slave
442 addresses be left-justified (xxxxxxx0b) rather than right-justified.
443 All of the other SMBus controller drivers require left-justified
444 slave addresses, so this change makes all the drivers provide the
448 INET6 statistics (struct ip6stat) was updated.
449 netstat(1) needs to be recompiled.
452 NTFS has been removed from GENERIC kernel on amd64 to match
453 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
454 will load ntfs.ko module automatically when NTFS support is
455 actually needed, unless ntfs.ko is not installed or security
456 level prohibits loading kernel modules. If either is the case,
457 "options NTFS" has to be added into kernel config.
460 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
461 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
462 800061. User space tools that rely on the size of struct tcpcb in
463 tcp_var.h (e.g. sockstat) need to be recompiled.
466 ng_tty(4) module updated to match the new TTY subsystem.
467 Due to API change, user-level applications must be updated.
468 New API support added to mpd5 CVS and expected to be present
469 in next mpd5.3 release.
472 With __FreeBSD_version 800060 the makefs tool is part of
473 the base system (it was a port).
476 The afdata and ifnet locks have been changed from mutexes to
477 rwlocks, network modules will need to be re-compiled.
480 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
481 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
482 The new code reduced struct rtentry{} by 16 bytes on 32-bit
483 architecture and 40 bytes on 64-bit architecture. The userland
484 applications "arp" and "ndp" have been updated accordingly.
485 The output from "netstat -r" shows only routing entries and
486 none of the L2 information.
489 __FreeBSD_version 800057 marks the switchover from the
490 binary ath hal to source code. Users must add the line:
492 options AH_SUPPORT_AR5416
494 to their kernel config files when specifying:
498 The ath_hal module no longer exists; the code is now compiled
499 together with the driver in the ath module. It is now
500 possible to tailor chip support (i.e. reduce the set of chips
501 and thereby the code size); consult ath_hal(4) for details.
504 __FreeBSD_version 800054 adds memory barriers to
505 <machine/atomic.h>, new interfaces to ifnet to facilitate
506 multiple hardware transmit queues for cards that support
507 them, and a lock-less ring-buffer implementation to
508 enable drivers to more efficiently manage queueing of
512 A new version of ZFS (version 13) has been merged to -HEAD.
513 This version has zpool attribute "listsnapshots" off by
514 default, which means "zfs list" does not show snapshots,
515 and is the same as Solaris behavior.
518 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
521 The uhci, ohci, ehci and slhci USB Host controller drivers have
522 been put into separate modules. If you load the usb module
523 separately through loader.conf you will need to load the
524 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
525 controller add the following to loader.conf:
531 The ABI used by the PMC toolset has changed. Please keep
532 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
536 The TTY subsystem of the kernel has been replaced by a new
537 implementation, which provides better scalability and an
538 improved driver model. Most common drivers have been migrated to
539 the new TTY subsystem, while others have not. The following
540 drivers have not yet been ported to the new TTY layer:
543 cy, digi, rc, rp, sio
549 ng_h4, ng_tty, ppp, sl, snp
551 Adding these drivers to your kernel configuration file shall
552 cause compilation to fail.
555 ntpd has been upgraded to 4.2.4p5.
558 OpenSSH has been upgraded to 5.1p1.
560 For many years, FreeBSD's version of OpenSSH preferred DSA
561 over RSA for host and user authentication keys. With this
562 upgrade, we've switched to the vendor's default of RSA over
563 DSA. This may cause upgraded clients to warn about unknown
564 host keys even for previously known hosts. Users should
565 follow the usual procedure for verifying host keys before
566 accepting the RSA key.
568 This can be circumvented by setting the "HostKeyAlgorithms"
569 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
572 Please note that the sequence of keys offered for
573 authentication has been changed as well. You may want to
574 specify IdentityFile in a different order to revert this
578 The sio(4) driver has been removed from the i386 and amd64
579 kernel configuration files. This means uart(4) is now the
580 default serial port driver on those platforms as well.
582 To prevent collisions with the sio(4) driver, the uart(4) driver
583 uses different names for its device nodes. This means the
584 onboard serial port will now most likely be called "ttyu0"
585 instead of "ttyd0". You may need to reconfigure applications to
586 use the new device names.
588 When using the serial port as a boot console, be sure to update
589 /boot/device.hints and /etc/ttys before booting the new kernel.
590 If you forget to do so, you can still manually specify the hints
591 at the loader prompt:
593 set hint.uart.0.at="isa"
594 set hint.uart.0.port="0x3F8"
595 set hint.uart.0.flags="0x10"
596 set hint.uart.0.irq="4"
600 The gpt(8) utility has been removed. Use gpart(8) to partition
604 The version that Linuxulator emulates was changed from 2.4.2
605 to 2.6.16. If you experience any problems with Linux binaries
606 please try to set sysctl compat.linux.osrelease to 2.4.2 and
607 if it fixes the problem contact emulation mailing list.
610 ISDN4BSD (I4B) was removed from the src tree. You may need to
611 update a your kernel configuration and remove relevant entries.
614 I have checked in code to support multiple routing tables.
615 See the man pages setfib(1) and setfib(2).
616 This is a hopefully backwards compatible version,
617 but to make use of it you need to compile your kernel
618 with options ROUTETABLES=2 (or more up to 16).
621 The 802.11 wireless support was redone to enable multi-bss
622 operation on devices that are capable. The underlying device
623 is no longer used directly but instead wlanX devices are
624 cloned with ifconfig. This requires changes to rc.conf files.
626 ifconfig_ath0="WPA DHCP"
629 ifconfig_wlan0="WPA DHCP"
630 see rc.conf(5) for more details. In addition, mergemaster of
631 /etc/rc.d is highly recommended. Simultaneous update of userland
632 and kernel wouldn't hurt either.
634 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
635 modules were merged into the base wlan module. All references
636 to these modules (e.g. in kernel config files) must be removed.
639 psm(4) has gained write(2) support in native operation level.
640 Arbitrary commands can be written to /dev/psm%d and status can
641 be read back from it. Therefore, an application is responsible
642 for status validation and error recovery. It is a no-op in
643 other operation levels.
646 Support for KSE threading has been removed from the kernel. To
647 run legacy applications linked against KSE libmap.conf may
648 be used. The following libmap.conf may be used to ensure
649 compatibility with any prior release:
651 libpthread.so.1 libthr.so.1
652 libpthread.so.2 libthr.so.2
653 libkse.so.3 libthr.so.3
656 The layout of struct vmspace has changed. This affects libkvm
657 and any executables that link against libkvm and use the
658 kvm_getprocs() function. In particular, but not exclusively,
659 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
660 The effects are minimal, but it's advisable to upgrade world
664 The latest em driver no longer has support in it for the
665 82575 adapter, this is now moved to the igb driver. The
666 split was done to make new features that are incompatible
667 with older hardware easier to do.
670 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
671 likewise the kernel option is now GEOM_LINUX_LVM.
674 The default NFS mount mode has changed from UDP to TCP for
675 increased reliability. If you rely on (insecurely) NFS
676 mounting across a firewall you may need to update your
680 Belatedly note the addition of m_collapse for compacting
684 The fts(3) structures have been changed to use adequate
685 integer types for their members and so to be able to cope
686 with huge file trees. The old fts(3) ABI is preserved
687 through symbol versioning in libc, so third-party binaries
688 using fts(3) should still work, although they will not take
689 advantage of the extended types. At the same time, some
690 third-party software might fail to build after this change
691 due to unportable assumptions made in its source code about
692 fts(3) structure members. Such software should be fixed
693 by its vendor or, in the worst case, in the ports tree.
694 FreeBSD_version 800015 marks this change for the unlikely
695 case that a portable fix is impossible.
698 To upgrade to -current after this date, you must be running
699 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
700 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
703 The ADAPTIVE_GIANT kernel option has been retired because its
704 functionality is the default now.
707 The AT keyboard emulation of sunkbd(4) has been turned on
708 by default. In order to make the special symbols of the Sun
709 keyboards driven by sunkbd(4) work under X these now have
710 to be configured the same way as Sun USB keyboards driven
711 by ukbd(4) (which also does AT keyboard emulation), f.e.:
713 Option "XkbLayout" "us"
714 Option "XkbRules" "xorg"
715 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
718 It has been decided that it is desirable to provide ABI
719 backwards compatibility to the FreeBSD 4/5/6 versions of the
720 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
721 broken with the introduction of PCI domain support (see the
722 20070930 entry). Unfortunately, this required the ABI of
723 PCIOCGETCONF to be broken again in order to be able to
724 provide backwards compatibility to the old version of that
725 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
726 again. As for prominent ports this affects neither pciutils
727 nor xorg-server this time, the hal port needs to be rebuilt
731 The misnamed kthread_create() and friends have been renamed
732 to kproc_create() etc. Many of the callers already
734 I will return kthread_create() and friends in a while
735 with implementations that actually create threads, not procs.
736 Renaming corresponds with version 800002.
742 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
743 WITHOUT_LIBTHR are set.
746 The PCI code has been made aware of PCI domains. This means that
747 the location strings as used by pciconf(8) etc are now in the
748 following format: pci<domain>:<bus>:<device>[:<function>]. It
749 also means that consumers of <sys/pciio.h> potentially need to
750 be recompiled; this includes the hal and xorg-server ports.
753 The caching daemon (cached) was renamed to nscd. nscd.conf
754 configuration file should be used instead of cached.conf and
755 nscd_enable, nscd_pidfile and nscd_flags options should be used
756 instead of cached_enable, cached_pidfile and cached_flags in
760 The getfacl(1) utility now prints owning user and group name
761 instead of owning uid and gid in the three line comment header.
762 This is the same behavior as getfacl(1) on Solaris and Linux.
765 The new IPsec code is now compiled in using the IPSEC option. The
766 IPSEC option now requires "device crypto" be defined in your kernel
767 configuration. The FAST_IPSEC kernel option is now deprecated.
770 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
771 note the changed syntax - keep state is now on by default. Also
772 note the fact that ftp-proxy(8) has been changed from bottom up and
773 has been moved from libexec to usr/sbin. Changes in the ALTQ
774 handling also affect users of IPFW's ALTQ capabilities.
777 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
778 only IPsec supported by FreeBSD. The new IPsec stack
779 supports both IPv4 and IPv6. The kernel option will change
780 after the code changes have settled in. For now the kernel
781 option IPSEC is deprecated and FAST_IPSEC is the only option, that
782 will change after some settling time.
785 The wicontrol(8) utility has been removed from the base system. wi(4)
786 cards should be configured using ifconfig(8), see the man page for more
790 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
791 instead of the nve(4) driver. Please update your configuration
795 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
796 database if it is missing or older than the aliases file. If
797 desired, set the new rc.conf option sendmail_rebuild_aliases
798 to "YES" to restore that functionality.
801 The IPv4 multicast socket code has been considerably modified, and
802 moved to the file sys/netinet/in_mcast.c. Initial support for the
803 RFC 3678 Source-Specific Multicast Socket API has been added to
804 the IPv4 network stack.
806 Strict multicast and broadcast reception is now the default for
807 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
808 has now been removed.
810 The RFC 1724 hack for interface selection has been removed; the use
811 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
812 been added to replace it. Consumers such as routed will soon be
813 updated to reflect this.
815 These changes affect users who are running routed(8) or rdisc(8)
816 from the FreeBSD base system on point-to-point or unnumbered
820 The net80211 layer has changed significantly and all wireless
821 drivers that depend on it need to be recompiled. Further these
822 changes require that any program that interacts with the wireless
823 support in the kernel be recompiled; this includes: ifconfig,
824 wpa_supplicant, hostapd, and wlanstats. Users must also, for
825 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
826 if they use modules for wireless support. These modules implement
827 scanning support for station and ap modes, respectively. Failure
828 to load the appropriate module before marking a wireless interface
829 up will result in a message to the console and the device not
833 The pam_nologin(8) module ceases to provide an authentication
834 function and starts providing an account management function.
835 Consequent changes to /etc/pam.d should be brought in using
836 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
837 need manual editing as follows. Locate this line (or similar):
839 auth required pam_nologin.so no_warn
841 and change it according to this example:
843 account required pam_nologin.so no_warn
845 That is, the first word needs to be changed from "auth" to
846 "account". The new line can be moved to the account section
847 within the file for clarity. Not updating pam.conf(5) files
848 will result in nologin(5) ignored by the respective services.
851 The ether_ioctl() function has been synchronized with ioctl(2)
852 and ifnet.if_ioctl. Due to that, the size of one of its arguments
853 has changed on 64-bit architectures. All kernel modules using
854 ether_ioctl() need to be rebuilt on such architectures.
857 Improved INCLUDE_CONFIG_FILE support has been introduced to the
858 config(8) utility. In order to take advantage of this new
859 functionality, you are expected to recompile and install
860 src/usr.sbin/config. If you don't rebuild config(8), and your
861 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
862 build will be broken because of a missing "kernconfstring"
866 Symbol versioning is enabled by default. To disable it, use
867 option WITHOUT_SYMVER. It is not advisable to attempt to
868 disable symbol versioning once it is enabled; your installworld
869 will break because a symbol version-less libc will get installed
870 before the install tools. As a result, the old install tools,
871 which previously had symbol dependencies to FBSD_1.0, will fail
872 because the freshly installed libc will not have them.
874 The default threading library (providing "libpthread") has been
875 changed to libthr. If you wish to have libkse as your default,
876 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
879 The ABI breakage in sendmail(8)'s libmilter has been repaired
880 so it is no longer necessary to recompile mail filters (aka,
881 milters). If you recompiled mail filters after the 20070408
882 note, it is not necessary to recompile them again.
885 The new trunk(4) driver has been renamed to lagg(4) as it better
886 reflects its purpose. ifconfig will need to be recompiled.
889 sendmail(8) has been updated to version 8.14.1. Mail filters
890 (aka, milters) compiled against the libmilter included in the
891 base operating system should be recompiled.
894 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
895 In order to use them one must agree to the respective LICENSE in
896 share/doc/legal and define legal.intel_<name>.license_ack=1 via
897 loader.conf(5) or kenv(1). Make sure to deinstall the now
898 deprecated modules from the respective firmware ports.
901 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
902 were removed from FreeBSD's libc. These originally came from INRIA
903 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
904 deprecated in previous releases.
905 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
906 replace it as a more portable (and re-entrant) API.
909 To support interrupt filtering a modification to the newbus API
910 has occurred, ABI was broken and __FreeBSD_version was bumped
911 to 700031. Please make sure that your kernel and modules are in
913 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
916 The IPv6 multicast forwarding code may now be loaded into GENERIC
917 kernels by loading the ip_mroute.ko module. This is built into the
918 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
919 set; see src.conf(5) for more information.
922 The output of netstat -r has changed. Without -n, we now only
923 print a "network name" without the prefix length if the network
924 address and mask exactly match a Class A/B/C network, and an entry
925 exists in the nsswitch "networks" map.
926 With -n, we print the full unabbreviated CIDR network prefix in
927 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
928 This change is in preparation for changes such as equal-cost
929 multipath, and to more generally assist operational deployment
930 of FreeBSD as a modern IPv4 router.
933 PIM has been turned on by default in the IPv4 multicast
934 routing code. The kernel option 'PIM' has now been removed.
935 PIM is now built by default if option 'MROUTING' is specified.
936 It may now be loaded into GENERIC kernels by loading the
940 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
941 has been removed. Its functionality may be achieved by explicitly
942 configuring gif(4) interfaces and using the 'phyint' keyword in
944 XORP does not support source-routed IPv4 multicast tunnels nor the
945 integrated IPIP tunneling, therefore it is not affected by this
946 change. The __FreeBSD_version macro has been bumped to 700030.
949 Support for PCI Message Signalled Interrupts has been
950 re-enabled in the bge driver, only for those chips which are
951 believed to support it properly. If there are any problems,
952 MSI can be disabled completely by setting the
953 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
957 Support for PCI Message Signalled Interrupts has been
958 disabled again in the bge driver. Many revisions of the
959 hardware fail to support it properly. Support can be
960 re-enabled by removing the #define of BGE_DISABLE_MSI in
961 "src/sys/dev/bge/if_bge.c".
964 Support for PCI Message Signalled Interrupts has been added
965 to the bge driver. If there are any problems, MSI can be
966 disabled completely by setting the 'hw.pci.enable_msi' and
967 'hw.pci.enable_msix' tunables to 0 in the loader.
970 The removal of several facets of the experimental Threading
971 system from the kernel means that the proc and thread structures
972 have changed quite a bit. I suggest all kernel modules that might
973 reference these structures be recompiled.. Especially the
977 Sound infrastructure has been updated with various fixes and
978 improvements. Most of the changes are pretty much transparent,
979 with exceptions of followings:
980 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
981 moved to their own dev sysctl nodes, for example:
982 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
983 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
984 own chardev in the form of "dsp%d.<function>%d", where <function>
985 is p = playback, r = record and v = virtual, respectively. Users
986 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
987 This does not affect those who are using "/dev/dsp".
990 geom(4)'s gmirror(8) class metadata structure has been
991 rev'd from v3 to v4. If you update across this point and
992 your metadata is converted for you, you will not be easily
993 able to downgrade since the /boot/kernel.old/geom_mirror.ko
994 kernel module will be unable to read the v4 metadata. You
995 can resolve this by doing from the loader(8) prompt:
997 set vfs.root.mountfrom="ufs:/dev/XXX"
999 where XXX is the root slice of one of the disks that composed
1000 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1001 the array the same way you built it originally.
1004 The following binaries have been disconnected from the build:
1005 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1006 and mount_std. The functionality of these programs has been
1007 moved into the mount program. For example, to mount a devfs
1008 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1009 This does not affect entries in /etc/fstab, since entries in
1010 /etc/fstab are always processed with "mount -t fstype".
1013 Support for PCI Message Signalled Interrupts on i386 and amd64
1014 has been added to the kernel and various drivers will soon be
1015 updated to use MSI when it is available. If there are any problems,
1016 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1017 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1020 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1021 The lockmgr object layout has been changed as a result of having
1022 a lock_object embedded in it. As a consequence all file system
1023 kernel modules must be re-compiled. The mutex profiling man page
1024 has not yet been updated to reflect this change.
1027 KSE in the kernel has now been made optional and turned on by
1028 default. Use 'nooption KSE' in your kernel config to turn it
1029 off. All kernel modules *must* be recompiled after this change.
1030 There-after, modules from a KSE kernel should be compatible with
1031 modules from a NOKSE kernel due to the temporary padding fields
1032 added to 'struct proc'.
1035 mrouted and its utilities have been removed from the base system.
1038 Some ioctl(2) command codes have changed. Full backward ABI
1039 compatibility is provided if the "options COMPAT_FREEBSD6" is
1040 present in the kernel configuration file. Make sure to add
1041 this option to your kernel config file, or recompile X.Org
1042 and the rest of ports; otherwise they may refuse to work.
1045 tcpslice has been removed from the base system.
1048 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1049 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1050 systat needs to be rebuilt.
1053 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1056 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1057 for IPFIREWALL_FORWARD is now as it was before when it was first
1058 committed and for years after. The behaviour is now ON.
1061 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1062 Now it can decrypt files created from different architectures.
1063 Unfortunately, it is no longer able to decrypt a cipher text
1064 generated with an older version on 64 bit architectures.
1065 If you have such a file, you need old utility to decrypt it.
1068 The interface version of the i4b kernel part has changed. So
1069 after updating the kernel sources and compiling a new kernel,
1070 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1071 be rebuilt, and vice versa.
1074 The XBOX kernel now defaults to the nfe(4) driver instead of
1075 the nve(4) driver. Please update your configuration
1079 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1080 PCnet family of NICs has been removed. The new le(4) driver serves
1081 as an equivalent but cross-platform replacement with the pcn(4)
1082 driver still providing performance-optimized support for the subset
1083 of AMD Am79C971 PCnet-FAST and greater chips as before.
1086 The machdep.* sysctls and the adjkerntz utility have been
1087 modified a bit. The new adjkerntz utility uses the new
1088 sysctl names and sysctlbyname() calls, so it may be impossible
1089 to run an old /sbin/adjkerntz utility in single-user mode
1090 with a new kernel. Replace the `adjkerntz -i' step before
1091 `make installworld' with:
1093 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1095 and proceed as usual with the rest of the installworld-stage
1096 steps. Otherwise, you risk installing binaries with their
1097 timestamp set several hours in the future, especially if
1098 you are running with local time set to GMT+X hours.
1101 The ip6fw utility has been removed. The behavior provided by
1102 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1103 have been updated to deal with it. There are some rules that
1104 might not migrate cleanly. Use rc.firewall6 as a template to
1108 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1109 attachments have been removed. Make sure to configure scc(4)
1110 on sparc64. Note also that by default puc(4) will use uart(4)
1111 and not sio(4) for serial ports because interrupt handling has
1112 been optimized for multi-port serial cards and only uart(4)
1113 implements the interface to support it.
1116 The scc(4) driver replaces puc(4) for Serial Communications
1117 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1118 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1119 configuration to make sure that the serial ports remain
1123 Most world/kernel related NO_* build options changed names.
1124 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1125 after FreeBSD ports) and should be set in /etc/src.conf
1126 (the src.conf(5) manpage is provided). Full backwards
1127 compatibility is maintained for the time being though it's
1128 highly recommended to start moving old options out of the
1129 system-wide /etc/make.conf file into the new /etc/src.conf
1130 while also properly renaming them. More conversions will
1131 likely follow. Posting to current@:
1133 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1136 The NETSMBCRYPTO kernel option has been retired because its
1137 functionality is always included in NETSMB and smbfs.ko now.
1140 The TDFX_LINUX kernel option was retired and replaced by the
1141 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1142 kernel module. Loading it alone should suffice to get 3dfx support
1143 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1147 The 'audit' group was added to support the new auditing functionality
1148 in the base system. Be sure to follow the directions for updating,
1149 including the requirement to run mergemaster -p.
1152 The kernel ABI to file system modules was changed on i386.
1153 Please make sure that your kernel and modules are in sync.
1156 This actually occured some time ago, but installing the kernel
1157 now also installs a bunch of symbol files for the kernel modules.
1158 This increases the size of /boot/kernel to about 67Mbytes. You
1159 will need twice this if you will eventually back this up to kernel.old
1160 on your next install.
1161 If you have a shortage of room in your root partition, you should add
1162 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1163 to your /etc/make.conf.
1166 libc's malloc implementation has been replaced. This change has the
1167 potential to uncover application bugs that previously went unnoticed.
1168 See the malloc(3) manual page for more details.
1171 The generic netgraph(4) cookie has been changed. If you upgrade
1172 kernel passing this point, you also need to upgrade userland
1173 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1176 si(4)'s device files now contain the unit number.
1177 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1180 The kernel ABI was mostly destroyed due to a change in the size
1181 of struct lock_object which is nested in other structures such
1182 as mutexes which are nested in all sorts of other structures.
1183 Make sure your kernel and modules are in sync.
1186 The page coloring algorithm in the VM subsystem was converted
1187 from tuning with kernel options to autotuning. Please remove
1188 any PQ_* option except PQ_NOOPT from your kernel config.
1191 The net80211-related tools in the tools/tools/ath directory
1192 have been moved to tools/tools/net80211 and renamed with a
1193 "wlan" prefix. Scripts that use them should be adjusted
1197 Scripts in the local_startup directories (as defined in
1198 /etc/defaults/rc.conf) that have the new rc.d semantics will
1199 now be run as part of the base system rcorder. If there are
1200 errors or problems with one of these local scripts, it could
1201 cause boot problems. If you encounter such problems, boot in
1202 single user mode, remove that script from the */rc.d directory.
1203 Please report the problem to the port's maintainer, and the
1204 freebsd-ports@freebsd.org mailing list.
1207 The nodev mount option was deprecated in RELENG_6 (where it
1208 was a no-op), and is now unsupported. If you have nodev or dev listed
1209 in /etc/fstab, remove it, otherwise it will result in a mount error.
1212 ABI between ipfw(4) and ipfw(8) has been changed. You need
1213 to rebuild ipfw(8) when rebuilding kernel.
1216 rp(4)'s device files now contain the unit number.
1217 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1220 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1221 Its /etc/rc.conf.d configuration file has been `ppp' from
1222 the beginning, and hence there is no need to touch it.
1225 Now most modules get their build-time options from the kernel
1226 configuration file. A few modules still have fixed options
1227 due to their non-conformant implementation, but they will be
1228 corrected eventually. You may need to review the options of
1229 the modules in use, explicitly specify the non-default options
1230 in the kernel configuration file, and rebuild the kernel and
1234 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1235 to turn polling(4) on your interfaces.
1238 The old bridge(4) implementation was retired. The new
1239 if_bridge(4) serves as a full functional replacement.
1242 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1243 to conform to POSIX-2001. This change broke an ABI
1244 compatibility on 64 bit architecture. You have to recompile
1245 userland programs that use getaddrinfo(3) on 64 bit
1249 RELENG_6 branched here.
1252 The pccard_ifconfig rc.conf variable has been removed and a new
1253 variable, ifconfig_DEFAULT has been introduced. Unlike
1254 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1255 do not have ifconfig_ifn entries rather than just those in
1256 removable_interfaces.
1259 Some previous versions of PAM have permitted the use of
1260 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1261 to third party PAM modules in /usr/local/lib. A change has been
1262 made to require the use of absolute paths in order to avoid
1263 ambiguity and dependence on library path configuration, which may
1264 affect existing configurations.
1267 Major changes to network interface API. All drivers must be
1268 recompiled. Drivers not in the base system will need to be
1269 updated to the new APIs.
1272 Changes were made to kinfo_proc in sys/user.h. Please recompile
1273 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1274 will not behave correctly.
1276 The API and ABI for hwpmc(4) have changed with the addition
1277 of sampling support. Please recompile lib/libpmc(3) and
1278 usr.sbin/{pmcstat,pmccontrol}.
1281 The OpenBSD dhclient was imported in place of the ISC dhclient
1282 and the network interface configuration scripts were updated
1283 accordingly. If you use DHCP to configure your interfaces, you
1284 must now run devd. Also, DNS updating was lost so you will need
1285 to find a workaround if you use this feature.
1287 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1288 sure to run mergemaster -p (like you are supposed to do every time
1292 if_bridge was added to the tree. This has changed struct ifnet.
1293 Please recompile userland and all network related modules.
1296 The n_net of a struct netent was changed to an uint32_t, and
1297 1st argument of getnetbyaddr() was changed to an uint32_t, to
1298 conform to POSIX-2001. These changes broke an ABI
1299 compatibility on 64 bit architecture. With these changes,
1300 shlib major of libpcap was bumped. You have to recompile
1301 userland programs that use getnetbyaddr(3), getnetbyname(3),
1302 getnetent(3) and/or libpcap on 64 bit architecture.
1305 Kernel parsing of extra options on '#!' first lines of shell
1306 scripts has changed. Lines with multiple options likely will
1307 fail after this date. For full details, please see
1308 http://people.freebsd.org/~gad/Updating-20050528.txt
1311 The packet filter (pf) code has been updated to OpenBSD 3.7
1312 Please note the changed anchor syntax and the fact that
1313 authpf(8) now needs a mounted fdescfs(5) to function.
1316 The NO_MIXED_MODE kernel option has been removed from the i386
1317 amd64 platforms as its use has been superceded by the new local
1318 APIC timer code. Any kernel config files containing this option
1322 The on-disk format of LC_CTYPE files was changed to be machine
1323 independent. Please make sure NOT to use NO_CLEAN buildworld
1324 when crossing this point. Crossing this point also requires
1325 recompile or reinstall of all locale depended packages.
1328 The ifi_epoch member of struct if_data has been changed to
1329 contain the uptime at which the interface was created or the
1330 statistics zeroed rather then the wall clock time because
1331 wallclock time may go backwards. This should have no impact
1332 unless an snmp implementation is using this value (I know of
1333 none at this point.)
1336 The acpi_perf and acpi_throttle drivers are now part of the
1337 acpi(4) main module. They are no longer built separately.
1340 The layout of struct image_params has changed. You have to
1341 recompile all compatibility modules (linux, svr4, etc) for use
1342 with the new kernel.
1345 The p4tcc driver has been merged into cpufreq(4). This makes
1346 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1347 compile in "device cpufreq" to restore this functionality.
1350 The responsibility of recomputing the file system summary of
1351 a SoftUpdates-enabled dirty volume has been transferred to the
1352 background fsck. A rebuild of fsck(8) utility is recommended
1353 if you have updated the kernel.
1355 To get the old behavior (recompute file system summary at mount
1356 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1357 mounting the new volume.
1360 The cpufreq import is complete. As part of this, the sysctls for
1361 acpi(4) throttling have been removed. The power_profile script
1362 has been updated, so you can use performance/economy_cpu_freq in
1363 rc.conf(5) to set AC on/offline cpu frequencies.
1366 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1367 requires recompiling libnetgraph and userland netgraph utilities.
1370 Support for abbreviated forms of a number of ipfw options is
1371 now deprecated. Warnings are printed to stderr indicating the
1372 correct full form when a match occurs. Some abbreviations may
1373 be supported at a later date based on user feedback. To be
1374 considered for support, abbreviations must be in use prior to
1375 this commit and unlikely to be confused with current key words.
1378 By a popular demand, a lot of NOFOO options were renamed
1379 to NO_FOO (see bsd.compat.mk for a full list). The old
1380 spellings are still supported, but will cause annoying
1381 warnings on stderr. Make sure you upgrade properly (see
1382 the COMMON ITEMS: section later in this file).
1385 Auto-loading of ancillary wlan modules such as wlan_wep has
1386 been temporarily disabled; you need to statically configure
1387 the modules you need into your kernel or explicitly load them
1388 prior to use. Specifically, if you intend to use WEP encryption
1389 with an 802.11 device load/configure wlan_wep; if you want to
1390 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1391 and wlan_xauth as required.
1394 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1395 (``enable lqr''), older versions would revert to LCP ECHO mode on
1396 negotiation failure. Now, ``enable echo'' is required for this
1397 behaviour. The ppp version number has been bumped to 3.4.2 to
1401 The wlan support has been updated to split the crypto support
1402 into separate modules. For static WEP you must configure the
1403 wlan_wep module in your system or build and install the module
1404 in place where it can be loaded (the kernel will auto-load
1405 the module when a wep key is configured).
1408 The ath driver has been updated to split the tx rate control
1409 algorithm into a separate module. You need to include either
1410 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1413 Support for systems with an 80386 CPU has been removed. Please
1414 use FreeBSD 5.x or earlier on systems with an 80386.
1417 We have had a hack which would mount the root filesystem
1418 R/W if the device were named 'md*'. As part of the vnode
1419 work I'm doing I have had to remove this hack. People
1420 building systems which use preloaded MD root filesystems
1421 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1422 their /etc/rc scripts.
1425 FreeBSD 5.3 shipped here.
1428 The size of struct tcpcb has changed again due to the removal
1429 of RFC1644 T/TCP. You have to recompile userland programs that
1430 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1433 The size of struct tcpcb has changed. You have to recompile
1434 userland programs that read kmem for tcp sockets directly
1435 (netstat, sockstat, etc.)
1438 RELENG_5 branched here. For older entries, please see updating
1439 in the RELENG_5 branch.
1445 Avoid using make -j when upgrading. From time to time in the
1446 past there have been problems using -j with buildworld and/or
1447 installworld. This is especially true when upgrading between
1448 "distant" versions (eg one that cross a major release boundary
1449 or several minor releases, or when several months have passed
1450 on the -current branch).
1452 Sometimes, obscure build problems are the result of environment
1453 poisoning. This can happen because the make utility reads its
1454 environment when searching for values for global variables.
1455 To run your build attempts in an "environmental clean room",
1456 prefix all make commands with 'env -i '. See the env(1) manual
1457 page for more details.
1459 When upgrading from one major version to another it is generally
1460 best to upgrade to the latest code in the currently installed branch
1461 first, then do an upgrade to the new branch. This is the best-tested
1462 upgrade path, and has the highest probability of being successful.
1463 Please try this approach before reporting problems with a major
1468 If you are updating from a prior version of FreeBSD (even one just
1469 a few days old), you should follow this procedure. It is the most
1470 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1472 make kernel-toolchain
1473 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1474 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1476 To test a kernel once
1477 ---------------------
1478 If you just want to boot a kernel once (because you are not sure
1479 if it works, or if you want to boot a known bad kernel to provide
1480 debugging information) run
1481 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1482 nextboot -k testkernel
1484 To just build a kernel when you know that it won't mess you up
1485 --------------------------------------------------------------
1486 This assumes you are already running a 5.X system. Replace
1487 ${arch} with the architecture of your machine (e.g. "i386",
1488 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1490 cd src/sys/${arch}/conf
1491 config KERNEL_NAME_HERE
1492 cd ../compile/KERNEL_NAME_HERE
1497 If this fails, go to the "To build a kernel" section.
1499 To rebuild everything and install it on the current system.
1500 -----------------------------------------------------------
1501 # Note: sometimes if you are running current you gotta do more than
1502 # is listed here if you are upgrading from a really old current.
1504 <make sure you have good level 0 dumps>
1506 make kernel KERNCONF=YOUR_KERNEL_HERE
1508 <reboot in single user> [3]
1516 To cross-install current onto a separate partition
1517 --------------------------------------------------
1518 # In this approach we use a separate partition to hold
1519 # current's root, 'usr', and 'var' directories. A partition
1520 # holding "/", "/usr" and "/var" should be about 2GB in
1523 <make sure you have good level 0 dumps>
1526 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1527 <maybe newfs current's root partition>
1528 <mount current's root partition on directory ${CURRENT_ROOT}>
1529 make installworld DESTDIR=${CURRENT_ROOT}
1530 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1531 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1532 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1533 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1534 <reboot into current>
1535 <do a "native" rebuild/install as described in the previous section>
1536 <maybe install compatibility libraries from ports/misc/compat*>
1540 To upgrade in-place from 5.x-stable to current
1541 ----------------------------------------------
1542 <make sure you have good level 0 dumps>
1544 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1546 <reboot in single user> [3]
1553 Make sure that you've read the UPDATING file to understand the
1554 tweaks to various things you need. At this point in the life
1555 cycle of current, things change often and you are on your own
1556 to cope. The defaults can also change, so please read ALL of
1557 the UPDATING entries.
1559 Also, if you are tracking -current, you must be subscribed to
1560 freebsd-current@freebsd.org. Make sure that before you update
1561 your sources that you have read and understood all the recent
1562 messages there. If in doubt, please track -stable which has
1563 much fewer pitfalls.
1565 [1] If you have third party modules, such as vmware, you
1566 should disable them at this point so they don't crash your
1569 [3] From the bootblocks, boot -s, and then do
1574 adjkerntz -i # if CMOS is wall time
1575 Also, when doing a major release upgrade, it is required that
1576 you boot into single user mode to do the installworld.
1578 [4] Note: This step is non-optional. Failure to do this step
1579 can result in a significant reduction in the functionality of the
1580 system. Attempting to do it by hand is not recommended and those
1581 that pursue this avenue should read this file carefully, as well
1582 as the archives of freebsd-current and freebsd-hackers mailing lists
1583 for potential gotchas.
1585 [5] Usually this step is a noop. However, from time to time
1586 you may need to do this if you get unknown user in the following
1587 step. It never hurts to do it all the time. You may need to
1588 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1589 install) after the buildworld before this step if you last updated
1590 from current before 20020224 or from -stable before 20020408.
1592 [8] In order to have a kernel that can run the 4.x binaries
1593 needed to do an installworld, you must include the COMPAT_FREEBSD4
1594 option in your kernel. Failure to do so may leave you with a system
1595 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1596 is required to run the 5.x binaries on more recent kernels.
1598 Make sure that you merge any new devices from GENERIC since the
1599 last time you updated your kernel config file.
1601 [9] When checking out sources, you must include the -P flag to have
1602 cvs prune empty directories.
1604 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1605 "?=" instead of the "=" assignment operator, so that buildworld can
1606 override the CPUTYPE if it needs to.
1608 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1609 not on the command line, or in /etc/make.conf. buildworld will
1610 warn if it is improperly defined.
1613 This file contains a list, in reverse chronological order, of major
1614 breakages in tracking -current. Not all things will be listed here,
1615 and it only starts on October 16, 2004. Updating files can found in
1616 previous releases if your system is older than this.
1618 Copyright information:
1620 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1622 Redistribution, publication, translation and use, with or without
1623 modification, in full or in part, in any form or format of this
1624 document are permitted without further permission from the author.
1626 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1627 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1628 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1629 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1630 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1631 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1632 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1633 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1634 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1635 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1636 POSSIBILITY OF SUCH DAMAGE.
1638 If you find this document useful, and you want to, you may buy the
1641 Contact Warner Losh if you have any questions about your use of