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 9.x IS SLOW:
12 FreeBSD 9.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 Remove the option STOP_NMI. The default action is now to use NMI
27 only for KDB via the newly introduced function stop_cpus_hard()
28 and maintain stop_cpus() to just use a normal IPI_STOP on ia32
32 Bump the shared library version numbers for all libraries that
33 do not use symbol versioning as part of the 8.0-RELEASE cycle.
34 Bump __FreeBSD_version to 800105.
37 Due to changes in the implementation of virtual network stack
38 support, all network-related kernel modules must be recompiled.
39 As this change breaks the ABI, bump __FreeBSD_version to 800104.
42 The TOE interface to the TCP syncache has been modified to remove struct
43 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
44 cxgb driver is the only TOE consumer affected by this change, and needs
45 to be recompiled along with the kernel. As this change breaks the ABI,
46 bump __FreeBSD_version to 800103.
49 Padding has been added to struct tcpcb, sackhint and tcpstat in
50 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
51 maintainig the ABI. However, this change breaks the ABI, so bump
52 __FreeBSD_version to 800102. User space tools that rely on the size of
53 any of these structs (e.g. sockstat) need to be recompiled.
56 The NFS_LEGACYRPC option has been removed along with the old
57 kernel RPC implementation that this option selected. Kernel
58 configurations may need to be adjusted.
61 The network interface device nodes at /dev/net/<interface> have
62 been removed. All ioctl operations can be performed the normal
63 way using routing sockets. The kqueue functionality can
64 generally be replaced with routing sockets.
67 The documentation from the FreeBSD Documentation Project
68 (Handbook, FAQ, etc.) is now installed via packages by
69 sysinstall(8) and under the /usr/local/share/doc/freebsd
70 directory instead of /usr/share/doc.
73 The ABI of various structures related to the SYSV IPC API have
74 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
75 kernel options now all require COMPAT_FREEBSD7.
76 Bump __FreeBSD_version to 800100.
79 Layout of struct vnet has changed as routing related variables
80 were moved to their own Vimage module. Modules need to be
81 recompiled. Bump __FreeBSD_version to 800099.
84 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
85 and 1024 respectively. As long as no more than 16 groups per
86 process are used, no changes should be visible. When more
87 than 16 groups are used, old binaries may fail if they call
88 getgroups() or getgrouplist() with statically sized storage.
89 Recompiling will work around this, but applications should be
90 modified to use dynamically allocated storage for group arrays
91 as POSIX.1-2008 does not cap an implementation's number of
92 supported groups at NGROUPS_MAX+1 as previous versions did.
94 NFS and portalfs mounts may also be affected as the list of
95 groups is truncated to 16. Users of NFS who use more than 16
96 groups, should take care that negative group permissions are not
97 used on the exported file systems as they will not be reliable
98 unless a GSSAPI based authentication method is used.
101 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
102 This option compiles in the support for adaptive spinning for lockmgrs
103 which want to enable it. The lockinit() function now accepts the
104 flag LK_ADAPTIVE in order to make the lock object subject to
105 adaptive spinning when both held in write and read mode.
108 The layout of the structure returned by IEEE80211_IOC_STA_INFO
109 has changed. User applications that use this ioctl need to be
113 The layout of struct thread has changed. Kernel and modules
117 The layout of structs ifnet, domain, protosw and vnet_net has
118 changed. Kernel modules need to be rebuilt.
119 Bump __FreeBSD_version to 800097.
122 window(1) has been removed from the base system. It can now be
123 installed from ports. The port is called misc/window.
126 The way we are storing and accessing `routing table' entries
127 has changed. Programs reading the FIB, like netstat, need to
131 A new netisr implementation has been added for FreeBSD 8. Network
132 file system modules, such as igmp, ipdivert, and others, should be
134 Bump __FreeBSD_version to 800096.
137 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
141 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
142 Bump __FreeBSD_version to 800094.
145 Add mnt_xflag field to 'struct mount'. File system modules
147 Bump __FreeBSD_version to 800093.
150 The compiling option ADAPTIVE_SX has been retired while it has been
151 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
152 The KPI for sx_init_flags() changes as accepting flags:
153 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
154 has been introduced in order to handle the reversed logic.
155 Bump __FreeBSD_version to 800092.
158 Add support for hierarchical jails. Remove global securelevel.
159 Bump __FreeBSD_version to 800091.
162 The layout of struct vnet_net has changed, therefore modules
164 Bump __FreeBSD_version to 800090.
167 The newly imported zic(8) produces a new format in the
168 output. Please run tzsetup(8) to install the newly created
169 data to /etc/localtime.
172 The sysctl tree for the usb stack has renamed from hw.usb2.* to
173 hw.usb.* and is now consistent again with previous releases.
176 802.11 monitor mode support was revised and driver api's
177 were changed. Drivers dependent on net80211 now support
178 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
179 user-visible data structures were changed but applications
180 that use DLT_IEEE802_11 may require changes.
181 Bump __FreeBSD_version to 800088.
184 The layout of the following structs has changed: sysctl_oid,
185 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
186 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
187 panics may be experienced. World rebuild is required for
188 correctly checking networking state from userland.
189 Bump __FreeBSD_version to 800085.
192 MLDv2 and Source-Specific Multicast (SSM) have been merged
193 to the IPv6 stack. VIMAGE hooks are in but not yet used.
194 The implementation of SSM within FreeBSD's IPv6 stack closely
195 follows the IPv4 implementation.
197 For kernel developers:
199 * The most important changes are that the ip6_output() and
200 ip6_input() paths no longer take the IN6_MULTI_LOCK,
201 and this lock has been downgraded to a non-recursive mutex.
203 * As with the changes to the IPv4 stack to support SSM, filtering
204 of inbound multicast traffic must now be performed by transport
205 protocols within the IPv6 stack. This does not apply to TCP and
206 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
208 * The KPIs used by IPv6 multicast are similar to those used by
209 the IPv4 stack, with the following differences:
210 * im6o_mc_filter() is analogous to imo_multicast_filter().
211 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
212 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
213 * IN6_LOOKUP_MULTI() has been deprecated and removed.
214 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
215 for MLDv1 have an additional 'timer' argument which is used to
216 jitter the initial membership report for the solicited-node
217 multicast membership on-link.
218 * This is not strictly needed for MLDv2, which already jitters
219 its report transmissions. However, the 'timer' argument is
220 preserved in case MLDv1 is active on the interface.
222 * The KAME linked-list based IPv6 membership implementation has
223 been refactored to use a vector similar to that used by the IPv4
225 Code which maintains a list of its own multicast memberships
226 internally, e.g. carp, has been updated to reflect the new
229 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
230 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
231 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
232 implementation constraint which needs to be addressed in HEAD.
234 For application developers:
236 * The changes are broadly similar to those made for the IPv4
239 * The use of IPv4 and IPv6 multicast socket options on the same
240 socket, using mapped addresses, HAS NOT been tested or supported.
242 * There are a number of issues with the implementation of various
243 IPv6 multicast APIs which need to be resolved in the API surface
244 before the implementation is fully compatible with KAME userland
245 use, and these are mostly to do with interface index treatment.
247 * The literature available discusses the use of either the delta / ASM
248 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
249 using setsourcefilter(3)/getsourcefilter(3). For more information
250 please refer to RFC 3768, 'Socket Interface Extensions for
251 Multicast Source Filters'.
253 * Applications which use the published RFC 3678 APIs should be fine.
255 For systems administrators:
257 * The mtest(8) utility has been refactored to support IPv6, in
258 addition to IPv4. Interface addresses are no longer accepted
259 as arguments, their names must be used instead. The utility
260 will map the interface name to its first IPv4 address as
261 returned by getifaddrs(3).
263 * The ifmcstat(8) utility has also been updated to print the MLDv2
264 endpoint state and source filter lists via sysctl(3).
266 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
267 loopback of IPv6 multicast datagrams by default; it defaults to 1
268 to preserve the existing behaviour. Disabling multicast loopback is
269 recommended for optimal system performance.
271 * The IPv6 MROUTING code has been changed to examine this sysctl
272 instead of attempting to perform a group lookup before looping
273 back forwarded datagrams.
275 Bump __FreeBSD_version to 800084.
278 Implement low-level Bluetooth HCI API.
279 Bump __FreeBSD_version to 800083.
282 The layout of struct malloc_type, used by modules to register new
283 memory allocation types, has changed. Most modules will need to
284 be rebuilt or panics may be experienced.
285 Bump __FreeBSD_version to 800081.
288 Anticipate overflowing inp_flags - add inp_flags2.
289 This changes most offsets in inpcb, so checking v4 connection
290 state will require a world rebuild.
291 Bump __FreeBSD_version to 800080.
294 Add an llentry to struct route and struct route_in6. Modules
295 embedding a struct route will need to be recompiled.
296 Bump __FreeBSD_version to 800079.
299 The size of rt_metrics_lite and by extension rtentry has changed.
300 Networking administration apps will need to be recompiled.
301 The route command now supports show as an alias for get, weighting
302 of routes, sticky and nostick flags to alter the behavior of stateful
304 Bump __FreeBSD_version to 800078.
307 Do not use Giant for kbdmux(4) locking. This is wrong and
308 apparently causing more problems than it solves. This will
309 re-open the issue where interrupt handlers may race with
310 kbdmux(4) in polling mode. Typical symptoms include (but
311 not limited to) duplicated and/or missing characters when
312 low level console functions (such as gets) are used while
313 interrupts are enabled (for example geli password prompt,
314 mountroot prompt etc.). Disabling kbdmux(4) may help.
317 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
318 kernel modules referencing any of the above need to be recompiled.
319 Bump __FreeBSD_version to 800075.
322 GEOM_PART has become the default partition slicer for storage devices,
323 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
324 introduces some changes:
326 MSDOS/EBR: the devices created from MSDOS extended partition entries
327 (EBR) can be named differently than with GEOM_MBR and are now symlinks
328 to devices with offset-based names. fstabs may need to be modified.
330 BSD: the "geometry does not match label" warning is harmless in most
331 cases but it points to problems in file system misalignment with
332 disk geometry. The "c" partition is now implicit, covers the whole
333 top-level drive and cannot be (mis)used by users.
335 General: Kernel dumps are now not allowed to be written to devices
336 whose partition types indicate they are meant to be used for file
337 systems (or, in case of MSDOS partitions, as something else than
340 Most of these changes date approximately from 200812.
343 The uscanner(4) driver has been removed from the kernel. This follows
344 Linux removing theirs in 2.6 and making libusb the default interface
348 The multicast forwarding code has been cleaned up. netstat(1)
349 only relies on KVM now for printing bandwidth upcall meters.
350 The IPv4 and IPv6 modules are split into ip_mroute_mod and
351 ip6_mroute_mod respectively. The config(5) options for statically
352 compiling this code remain the same, i.e. 'options MROUTING'.
355 Support for the IFF_NEEDSGIANT network interface flag has been
356 removed, which means that non-MPSAFE network device drivers are no
357 longer supported. In particular, if_ar, if_sr, and network device
358 drivers from the old (legacy) USB stack can no longer be built or
362 POSIX.1 Native Language Support (NLS) has been enabled in libc and
363 a bunch of new language catalog files have also been added.
364 This means that some common libc messages are now localized and
365 they depend on the LC_MESSAGES environmental variable.
368 The k8temp(4) driver has been renamed to amdtemp(4) since
369 support for K10 and K11 CPU families was added.
372 IGMPv3 and Source-Specific Multicast (SSM) have been merged
373 to the IPv4 stack. VIMAGE hooks are in but not yet used.
375 For kernel developers, the most important changes are that the
376 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
377 and this lock has been downgraded to a non-recursive mutex.
379 Transport protocols (UDP, Raw IP) are now responsible for filtering
380 inbound multicast traffic according to group membership and source
381 filters. The imo_multicast_filter() KPI exists for this purpose.
382 Transports which do not use multicast (SCTP, TCP) already reject
383 multicast by default. Forwarding and receive performance may improve
384 as a mutex acquisition is no longer needed in the ip_input()
385 low-level input path. in_addmulti() and in_delmulti() are shimmed
386 to new KPIs which exist to support SSM in-kernel.
388 For application developers, it is recommended that loopback of
389 multicast datagrams be disabled for best performance, as this
390 will still cause the lock to be taken for each looped-back
391 datagram transmission. The net.inet.ip.mcast.loop sysctl may
392 be tuned to 0 to disable loopback by default; it defaults to 1
393 to preserve the existing behaviour.
395 For systems administrators, to obtain best performance with
396 multicast reception and multiple groups, it is always recommended
397 that a card with a suitably precise hash filter is used. Hash
398 collisions will still result in the lock being taken within the
399 transport protocol input path to check group membership.
401 If deploying FreeBSD in an environment with IGMP snooping switches,
402 it is recommended that the net.inet.igmp.sendlocal sysctl remain
403 enabled; this forces 224.0.0.0/24 group membership to be announced
406 The size of 'struct igmpstat' has changed; netstat needs to be
407 recompiled to reflect this.
408 Bump __FreeBSD_version to 800070.
411 libusb20.so.1 is now installed as libusb.so.1 and the ports system
412 updated to use it. This requires a buildworld/installworld in order to
413 update the library and dependencies (usbconfig, etc). Its advisable to
414 rebuild all ports which uses libusb. More specific directions are given
415 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
416 libusb are no longer required and can be removed.
419 A workaround is committed to allow the creation of System V shared
420 memory segment of size > 2 GB on the 64-bit architectures.
421 Due to a limitation of the existing ABI, the shm_segsz member
422 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
423 wrong for large segments. Note that limits must be explicitly
424 raised to allow such segments to be created.
427 The layout of struct ifnet has changed, requiring a rebuild of all
428 network device driver modules.
431 The /dev handling for the new USB stack has changed, a
432 buildworld/installworld is required for libusb20.
435 The new USB2 stack has now been permanently moved in and all kernel and
436 module names reverted to their previous values (eg, usb, ehci, ohci,
437 ums, ...). The old usb stack can be compiled in by prefixing the name
438 with the letter 'o', the old usb modules have been removed.
439 Updating entry 20090216 for xorg and 20090215 for libmap may still
443 The rc.conf(5) option if_up_delay has been renamed to
444 defaultroute_delay to better reflect its purpose. If you have
445 customized this setting in /etc/rc.conf you need to update it to
449 xorg 7.4 wants to configure its input devices via hald which does not
450 yet work with USB2. If the keyboard/mouse does not work in xorg then
452 Option "AllowEmptyInput" "off"
453 to your ServerLayout section. This will cause X to use the configured
454 kbd and mouse sections from your xorg.conf.
457 The GENERIC kernels for all architectures now default to the new USB2
458 stack. No kernel config options or code have been removed so if a
459 problem arises please report it and optionally revert to the old USB
460 stack. If you are loading USB kernel modules or have a custom kernel
461 that includes GENERIC then ensure that usb names are also changed over,
462 eg uftdi -> usb2_serial_ftdi.
464 Older programs linked against the ports libusb 0.1 need to be
465 redirected to the new stack's libusb20. /etc/libmap.conf can
467 # Map old usb library to new one for usb2 stack
468 libusb-0.1.so.8 libusb20.so.1
471 The ichsmb(4) driver has been changed to require SMBus slave
472 addresses be left-justified (xxxxxxx0b) rather than right-justified.
473 All of the other SMBus controller drivers require left-justified
474 slave addresses, so this change makes all the drivers provide the
478 INET6 statistics (struct ip6stat) was updated.
479 netstat(1) needs to be recompiled.
482 NTFS has been removed from GENERIC kernel on amd64 to match
483 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
484 will load ntfs.ko module automatically when NTFS support is
485 actually needed, unless ntfs.ko is not installed or security
486 level prohibits loading kernel modules. If either is the case,
487 "options NTFS" has to be added into kernel config.
490 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
491 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
492 800061. User space tools that rely on the size of struct tcpcb in
493 tcp_var.h (e.g. sockstat) need to be recompiled.
496 ng_tty(4) module updated to match the new TTY subsystem.
497 Due to API change, user-level applications must be updated.
498 New API support added to mpd5 CVS and expected to be present
499 in next mpd5.3 release.
502 With __FreeBSD_version 800060 the makefs tool is part of
503 the base system (it was a port).
506 The afdata and ifnet locks have been changed from mutexes to
507 rwlocks, network modules will need to be re-compiled.
510 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
511 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
512 The new code reduced struct rtentry{} by 16 bytes on 32-bit
513 architecture and 40 bytes on 64-bit architecture. The userland
514 applications "arp" and "ndp" have been updated accordingly.
515 The output from "netstat -r" shows only routing entries and
516 none of the L2 information.
519 __FreeBSD_version 800057 marks the switchover from the
520 binary ath hal to source code. Users must add the line:
522 options AH_SUPPORT_AR5416
524 to their kernel config files when specifying:
528 The ath_hal module no longer exists; the code is now compiled
529 together with the driver in the ath module. It is now
530 possible to tailor chip support (i.e. reduce the set of chips
531 and thereby the code size); consult ath_hal(4) for details.
534 __FreeBSD_version 800054 adds memory barriers to
535 <machine/atomic.h>, new interfaces to ifnet to facilitate
536 multiple hardware transmit queues for cards that support
537 them, and a lock-less ring-buffer implementation to
538 enable drivers to more efficiently manage queueing of
542 A new version of ZFS (version 13) has been merged to -HEAD.
543 This version has zpool attribute "listsnapshots" off by
544 default, which means "zfs list" does not show snapshots,
545 and is the same as Solaris behavior.
548 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
551 The uhci, ohci, ehci and slhci USB Host controller drivers have
552 been put into separate modules. If you load the usb module
553 separately through loader.conf you will need to load the
554 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
555 controller add the following to loader.conf:
561 The ABI used by the PMC toolset has changed. Please keep
562 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
566 The TTY subsystem of the kernel has been replaced by a new
567 implementation, which provides better scalability and an
568 improved driver model. Most common drivers have been migrated to
569 the new TTY subsystem, while others have not. The following
570 drivers have not yet been ported to the new TTY layer:
573 cy, digi, rc, rp, sio
579 ng_h4, ng_tty, ppp, sl, snp
581 Adding these drivers to your kernel configuration file shall
582 cause compilation to fail.
585 ntpd has been upgraded to 4.2.4p5.
588 OpenSSH has been upgraded to 5.1p1.
590 For many years, FreeBSD's version of OpenSSH preferred DSA
591 over RSA for host and user authentication keys. With this
592 upgrade, we've switched to the vendor's default of RSA over
593 DSA. This may cause upgraded clients to warn about unknown
594 host keys even for previously known hosts. Users should
595 follow the usual procedure for verifying host keys before
596 accepting the RSA key.
598 This can be circumvented by setting the "HostKeyAlgorithms"
599 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
602 Please note that the sequence of keys offered for
603 authentication has been changed as well. You may want to
604 specify IdentityFile in a different order to revert this
608 The sio(4) driver has been removed from the i386 and amd64
609 kernel configuration files. This means uart(4) is now the
610 default serial port driver on those platforms as well.
612 To prevent collisions with the sio(4) driver, the uart(4) driver
613 uses different names for its device nodes. This means the
614 onboard serial port will now most likely be called "ttyu0"
615 instead of "ttyd0". You may need to reconfigure applications to
616 use the new device names.
618 When using the serial port as a boot console, be sure to update
619 /boot/device.hints and /etc/ttys before booting the new kernel.
620 If you forget to do so, you can still manually specify the hints
621 at the loader prompt:
623 set hint.uart.0.at="isa"
624 set hint.uart.0.port="0x3F8"
625 set hint.uart.0.flags="0x10"
626 set hint.uart.0.irq="4"
630 The gpt(8) utility has been removed. Use gpart(8) to partition
634 The version that Linuxulator emulates was changed from 2.4.2
635 to 2.6.16. If you experience any problems with Linux binaries
636 please try to set sysctl compat.linux.osrelease to 2.4.2 and
637 if it fixes the problem contact emulation mailing list.
640 ISDN4BSD (I4B) was removed from the src tree. You may need to
641 update a your kernel configuration and remove relevant entries.
644 I have checked in code to support multiple routing tables.
645 See the man pages setfib(1) and setfib(2).
646 This is a hopefully backwards compatible version,
647 but to make use of it you need to compile your kernel
648 with options ROUTETABLES=2 (or more up to 16).
651 The 802.11 wireless support was redone to enable multi-bss
652 operation on devices that are capable. The underlying device
653 is no longer used directly but instead wlanX devices are
654 cloned with ifconfig. This requires changes to rc.conf files.
656 ifconfig_ath0="WPA DHCP"
659 ifconfig_wlan0="WPA DHCP"
660 see rc.conf(5) for more details. In addition, mergemaster of
661 /etc/rc.d is highly recommended. Simultaneous update of userland
662 and kernel wouldn't hurt either.
664 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
665 modules were merged into the base wlan module. All references
666 to these modules (e.g. in kernel config files) must be removed.
669 psm(4) has gained write(2) support in native operation level.
670 Arbitrary commands can be written to /dev/psm%d and status can
671 be read back from it. Therefore, an application is responsible
672 for status validation and error recovery. It is a no-op in
673 other operation levels.
676 Support for KSE threading has been removed from the kernel. To
677 run legacy applications linked against KSE libmap.conf may
678 be used. The following libmap.conf may be used to ensure
679 compatibility with any prior release:
681 libpthread.so.1 libthr.so.1
682 libpthread.so.2 libthr.so.2
683 libkse.so.3 libthr.so.3
686 The layout of struct vmspace has changed. This affects libkvm
687 and any executables that link against libkvm and use the
688 kvm_getprocs() function. In particular, but not exclusively,
689 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
690 The effects are minimal, but it's advisable to upgrade world
694 The latest em driver no longer has support in it for the
695 82575 adapter, this is now moved to the igb driver. The
696 split was done to make new features that are incompatible
697 with older hardware easier to do.
700 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
701 likewise the kernel option is now GEOM_LINUX_LVM.
704 The default NFS mount mode has changed from UDP to TCP for
705 increased reliability. If you rely on (insecurely) NFS
706 mounting across a firewall you may need to update your
710 Belatedly note the addition of m_collapse for compacting
714 The fts(3) structures have been changed to use adequate
715 integer types for their members and so to be able to cope
716 with huge file trees. The old fts(3) ABI is preserved
717 through symbol versioning in libc, so third-party binaries
718 using fts(3) should still work, although they will not take
719 advantage of the extended types. At the same time, some
720 third-party software might fail to build after this change
721 due to unportable assumptions made in its source code about
722 fts(3) structure members. Such software should be fixed
723 by its vendor or, in the worst case, in the ports tree.
724 FreeBSD_version 800015 marks this change for the unlikely
725 case that a portable fix is impossible.
728 To upgrade to -current after this date, you must be running
729 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
730 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
733 The ADAPTIVE_GIANT kernel option has been retired because its
734 functionality is the default now.
737 The AT keyboard emulation of sunkbd(4) has been turned on
738 by default. In order to make the special symbols of the Sun
739 keyboards driven by sunkbd(4) work under X these now have
740 to be configured the same way as Sun USB keyboards driven
741 by ukbd(4) (which also does AT keyboard emulation), f.e.:
743 Option "XkbLayout" "us"
744 Option "XkbRules" "xorg"
745 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
748 It has been decided that it is desirable to provide ABI
749 backwards compatibility to the FreeBSD 4/5/6 versions of the
750 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
751 broken with the introduction of PCI domain support (see the
752 20070930 entry). Unfortunately, this required the ABI of
753 PCIOCGETCONF to be broken again in order to be able to
754 provide backwards compatibility to the old version of that
755 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
756 again. As for prominent ports this affects neither pciutils
757 nor xorg-server this time, the hal port needs to be rebuilt
761 The misnamed kthread_create() and friends have been renamed
762 to kproc_create() etc. Many of the callers already
764 I will return kthread_create() and friends in a while
765 with implementations that actually create threads, not procs.
766 Renaming corresponds with version 800002.
772 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
773 WITHOUT_LIBTHR are set.
776 The PCI code has been made aware of PCI domains. This means that
777 the location strings as used by pciconf(8) etc are now in the
778 following format: pci<domain>:<bus>:<device>[:<function>]. It
779 also means that consumers of <sys/pciio.h> potentially need to
780 be recompiled; this includes the hal and xorg-server ports.
783 The caching daemon (cached) was renamed to nscd. nscd.conf
784 configuration file should be used instead of cached.conf and
785 nscd_enable, nscd_pidfile and nscd_flags options should be used
786 instead of cached_enable, cached_pidfile and cached_flags in
790 The getfacl(1) utility now prints owning user and group name
791 instead of owning uid and gid in the three line comment header.
792 This is the same behavior as getfacl(1) on Solaris and Linux.
795 The new IPsec code is now compiled in using the IPSEC option. The
796 IPSEC option now requires "device crypto" be defined in your kernel
797 configuration. The FAST_IPSEC kernel option is now deprecated.
800 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
801 note the changed syntax - keep state is now on by default. Also
802 note the fact that ftp-proxy(8) has been changed from bottom up and
803 has been moved from libexec to usr/sbin. Changes in the ALTQ
804 handling also affect users of IPFW's ALTQ capabilities.
807 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
808 only IPsec supported by FreeBSD. The new IPsec stack
809 supports both IPv4 and IPv6. The kernel option will change
810 after the code changes have settled in. For now the kernel
811 option IPSEC is deprecated and FAST_IPSEC is the only option, that
812 will change after some settling time.
815 The wicontrol(8) utility has been removed from the base system. wi(4)
816 cards should be configured using ifconfig(8), see the man page for more
820 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
821 instead of the nve(4) driver. Please update your configuration
825 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
826 database if it is missing or older than the aliases file. If
827 desired, set the new rc.conf option sendmail_rebuild_aliases
828 to "YES" to restore that functionality.
831 The IPv4 multicast socket code has been considerably modified, and
832 moved to the file sys/netinet/in_mcast.c. Initial support for the
833 RFC 3678 Source-Specific Multicast Socket API has been added to
834 the IPv4 network stack.
836 Strict multicast and broadcast reception is now the default for
837 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
838 has now been removed.
840 The RFC 1724 hack for interface selection has been removed; the use
841 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
842 been added to replace it. Consumers such as routed will soon be
843 updated to reflect this.
845 These changes affect users who are running routed(8) or rdisc(8)
846 from the FreeBSD base system on point-to-point or unnumbered
850 The net80211 layer has changed significantly and all wireless
851 drivers that depend on it need to be recompiled. Further these
852 changes require that any program that interacts with the wireless
853 support in the kernel be recompiled; this includes: ifconfig,
854 wpa_supplicant, hostapd, and wlanstats. Users must also, for
855 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
856 if they use modules for wireless support. These modules implement
857 scanning support for station and ap modes, respectively. Failure
858 to load the appropriate module before marking a wireless interface
859 up will result in a message to the console and the device not
863 The pam_nologin(8) module ceases to provide an authentication
864 function and starts providing an account management function.
865 Consequent changes to /etc/pam.d should be brought in using
866 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
867 need manual editing as follows. Locate this line (or similar):
869 auth required pam_nologin.so no_warn
871 and change it according to this example:
873 account required pam_nologin.so no_warn
875 That is, the first word needs to be changed from "auth" to
876 "account". The new line can be moved to the account section
877 within the file for clarity. Not updating pam.conf(5) files
878 will result in nologin(5) ignored by the respective services.
881 The ether_ioctl() function has been synchronized with ioctl(2)
882 and ifnet.if_ioctl. Due to that, the size of one of its arguments
883 has changed on 64-bit architectures. All kernel modules using
884 ether_ioctl() need to be rebuilt on such architectures.
887 Improved INCLUDE_CONFIG_FILE support has been introduced to the
888 config(8) utility. In order to take advantage of this new
889 functionality, you are expected to recompile and install
890 src/usr.sbin/config. If you don't rebuild config(8), and your
891 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
892 build will be broken because of a missing "kernconfstring"
896 Symbol versioning is enabled by default. To disable it, use
897 option WITHOUT_SYMVER. It is not advisable to attempt to
898 disable symbol versioning once it is enabled; your installworld
899 will break because a symbol version-less libc will get installed
900 before the install tools. As a result, the old install tools,
901 which previously had symbol dependencies to FBSD_1.0, will fail
902 because the freshly installed libc will not have them.
904 The default threading library (providing "libpthread") has been
905 changed to libthr. If you wish to have libkse as your default,
906 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
909 The ABI breakage in sendmail(8)'s libmilter has been repaired
910 so it is no longer necessary to recompile mail filters (aka,
911 milters). If you recompiled mail filters after the 20070408
912 note, it is not necessary to recompile them again.
915 The new trunk(4) driver has been renamed to lagg(4) as it better
916 reflects its purpose. ifconfig will need to be recompiled.
919 sendmail(8) has been updated to version 8.14.1. Mail filters
920 (aka, milters) compiled against the libmilter included in the
921 base operating system should be recompiled.
924 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
925 In order to use them one must agree to the respective LICENSE in
926 share/doc/legal and define legal.intel_<name>.license_ack=1 via
927 loader.conf(5) or kenv(1). Make sure to deinstall the now
928 deprecated modules from the respective firmware ports.
931 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
932 were removed from FreeBSD's libc. These originally came from INRIA
933 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
934 deprecated in previous releases.
935 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
936 replace it as a more portable (and re-entrant) API.
939 To support interrupt filtering a modification to the newbus API
940 has occurred, ABI was broken and __FreeBSD_version was bumped
941 to 700031. Please make sure that your kernel and modules are in
943 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
946 The IPv6 multicast forwarding code may now be loaded into GENERIC
947 kernels by loading the ip_mroute.ko module. This is built into the
948 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
949 set; see src.conf(5) for more information.
952 The output of netstat -r has changed. Without -n, we now only
953 print a "network name" without the prefix length if the network
954 address and mask exactly match a Class A/B/C network, and an entry
955 exists in the nsswitch "networks" map.
956 With -n, we print the full unabbreviated CIDR network prefix in
957 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
958 This change is in preparation for changes such as equal-cost
959 multipath, and to more generally assist operational deployment
960 of FreeBSD as a modern IPv4 router.
963 PIM has been turned on by default in the IPv4 multicast
964 routing code. The kernel option 'PIM' has now been removed.
965 PIM is now built by default if option 'MROUTING' is specified.
966 It may now be loaded into GENERIC kernels by loading the
970 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
971 has been removed. Its functionality may be achieved by explicitly
972 configuring gif(4) interfaces and using the 'phyint' keyword in
974 XORP does not support source-routed IPv4 multicast tunnels nor the
975 integrated IPIP tunneling, therefore it is not affected by this
976 change. The __FreeBSD_version macro has been bumped to 700030.
979 Support for PCI Message Signalled Interrupts has been
980 re-enabled in the bge driver, only for those chips which are
981 believed to support it properly. If there are any problems,
982 MSI can be disabled completely by setting the
983 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
987 Support for PCI Message Signalled Interrupts has been
988 disabled again in the bge driver. Many revisions of the
989 hardware fail to support it properly. Support can be
990 re-enabled by removing the #define of BGE_DISABLE_MSI in
991 "src/sys/dev/bge/if_bge.c".
994 Support for PCI Message Signalled Interrupts has been added
995 to the bge driver. If there are any problems, MSI can be
996 disabled completely by setting the 'hw.pci.enable_msi' and
997 'hw.pci.enable_msix' tunables to 0 in the loader.
1000 The removal of several facets of the experimental Threading
1001 system from the kernel means that the proc and thread structures
1002 have changed quite a bit. I suggest all kernel modules that might
1003 reference these structures be recompiled.. Especially the
1007 Sound infrastructure has been updated with various fixes and
1008 improvements. Most of the changes are pretty much transparent,
1009 with exceptions of followings:
1010 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1011 moved to their own dev sysctl nodes, for example:
1012 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1013 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1014 own chardev in the form of "dsp%d.<function>%d", where <function>
1015 is p = playback, r = record and v = virtual, respectively. Users
1016 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1017 This does not affect those who are using "/dev/dsp".
1020 geom(4)'s gmirror(8) class metadata structure has been
1021 rev'd from v3 to v4. If you update across this point and
1022 your metadata is converted for you, you will not be easily
1023 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1024 kernel module will be unable to read the v4 metadata. You
1025 can resolve this by doing from the loader(8) prompt:
1027 set vfs.root.mountfrom="ufs:/dev/XXX"
1029 where XXX is the root slice of one of the disks that composed
1030 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1031 the array the same way you built it originally.
1034 The following binaries have been disconnected from the build:
1035 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1036 and mount_std. The functionality of these programs has been
1037 moved into the mount program. For example, to mount a devfs
1038 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1039 This does not affect entries in /etc/fstab, since entries in
1040 /etc/fstab are always processed with "mount -t fstype".
1043 Support for PCI Message Signalled Interrupts on i386 and amd64
1044 has been added to the kernel and various drivers will soon be
1045 updated to use MSI when it is available. If there are any problems,
1046 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1047 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1050 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1051 The lockmgr object layout has been changed as a result of having
1052 a lock_object embedded in it. As a consequence all file system
1053 kernel modules must be re-compiled. The mutex profiling man page
1054 has not yet been updated to reflect this change.
1057 KSE in the kernel has now been made optional and turned on by
1058 default. Use 'nooption KSE' in your kernel config to turn it
1059 off. All kernel modules *must* be recompiled after this change.
1060 There-after, modules from a KSE kernel should be compatible with
1061 modules from a NOKSE kernel due to the temporary padding fields
1062 added to 'struct proc'.
1065 mrouted and its utilities have been removed from the base system.
1068 Some ioctl(2) command codes have changed. Full backward ABI
1069 compatibility is provided if the "options COMPAT_FREEBSD6" is
1070 present in the kernel configuration file. Make sure to add
1071 this option to your kernel config file, or recompile X.Org
1072 and the rest of ports; otherwise they may refuse to work.
1075 tcpslice has been removed from the base system.
1078 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1079 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1080 systat needs to be rebuilt.
1083 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1086 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1087 for IPFIREWALL_FORWARD is now as it was before when it was first
1088 committed and for years after. The behaviour is now ON.
1091 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1092 Now it can decrypt files created from different architectures.
1093 Unfortunately, it is no longer able to decrypt a cipher text
1094 generated with an older version on 64 bit architectures.
1095 If you have such a file, you need old utility to decrypt it.
1098 The interface version of the i4b kernel part has changed. So
1099 after updating the kernel sources and compiling a new kernel,
1100 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1101 be rebuilt, and vice versa.
1104 The XBOX kernel now defaults to the nfe(4) driver instead of
1105 the nve(4) driver. Please update your configuration
1109 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1110 PCnet family of NICs has been removed. The new le(4) driver serves
1111 as an equivalent but cross-platform replacement with the pcn(4)
1112 driver still providing performance-optimized support for the subset
1113 of AMD Am79C971 PCnet-FAST and greater chips as before.
1116 The machdep.* sysctls and the adjkerntz utility have been
1117 modified a bit. The new adjkerntz utility uses the new
1118 sysctl names and sysctlbyname() calls, so it may be impossible
1119 to run an old /sbin/adjkerntz utility in single-user mode
1120 with a new kernel. Replace the `adjkerntz -i' step before
1121 `make installworld' with:
1123 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1125 and proceed as usual with the rest of the installworld-stage
1126 steps. Otherwise, you risk installing binaries with their
1127 timestamp set several hours in the future, especially if
1128 you are running with local time set to GMT+X hours.
1131 The ip6fw utility has been removed. The behavior provided by
1132 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1133 have been updated to deal with it. There are some rules that
1134 might not migrate cleanly. Use rc.firewall6 as a template to
1138 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1139 attachments have been removed. Make sure to configure scc(4)
1140 on sparc64. Note also that by default puc(4) will use uart(4)
1141 and not sio(4) for serial ports because interrupt handling has
1142 been optimized for multi-port serial cards and only uart(4)
1143 implements the interface to support it.
1146 The scc(4) driver replaces puc(4) for Serial Communications
1147 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1148 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1149 configuration to make sure that the serial ports remain
1153 Most world/kernel related NO_* build options changed names.
1154 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1155 after FreeBSD ports) and should be set in /etc/src.conf
1156 (the src.conf(5) manpage is provided). Full backwards
1157 compatibility is maintained for the time being though it's
1158 highly recommended to start moving old options out of the
1159 system-wide /etc/make.conf file into the new /etc/src.conf
1160 while also properly renaming them. More conversions will
1161 likely follow. Posting to current@:
1163 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1166 The NETSMBCRYPTO kernel option has been retired because its
1167 functionality is always included in NETSMB and smbfs.ko now.
1170 The TDFX_LINUX kernel option was retired and replaced by the
1171 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1172 kernel module. Loading it alone should suffice to get 3dfx support
1173 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1177 The 'audit' group was added to support the new auditing functionality
1178 in the base system. Be sure to follow the directions for updating,
1179 including the requirement to run mergemaster -p.
1182 The kernel ABI to file system modules was changed on i386.
1183 Please make sure that your kernel and modules are in sync.
1186 This actually occured some time ago, but installing the kernel
1187 now also installs a bunch of symbol files for the kernel modules.
1188 This increases the size of /boot/kernel to about 67Mbytes. You
1189 will need twice this if you will eventually back this up to kernel.old
1190 on your next install.
1191 If you have a shortage of room in your root partition, you should add
1192 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1193 to your /etc/make.conf.
1196 libc's malloc implementation has been replaced. This change has the
1197 potential to uncover application bugs that previously went unnoticed.
1198 See the malloc(3) manual page for more details.
1201 The generic netgraph(4) cookie has been changed. If you upgrade
1202 kernel passing this point, you also need to upgrade userland
1203 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1206 si(4)'s device files now contain the unit number.
1207 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1210 The kernel ABI was mostly destroyed due to a change in the size
1211 of struct lock_object which is nested in other structures such
1212 as mutexes which are nested in all sorts of other structures.
1213 Make sure your kernel and modules are in sync.
1216 The page coloring algorithm in the VM subsystem was converted
1217 from tuning with kernel options to autotuning. Please remove
1218 any PQ_* option except PQ_NOOPT from your kernel config.
1221 The net80211-related tools in the tools/tools/ath directory
1222 have been moved to tools/tools/net80211 and renamed with a
1223 "wlan" prefix. Scripts that use them should be adjusted
1227 Scripts in the local_startup directories (as defined in
1228 /etc/defaults/rc.conf) that have the new rc.d semantics will
1229 now be run as part of the base system rcorder. If there are
1230 errors or problems with one of these local scripts, it could
1231 cause boot problems. If you encounter such problems, boot in
1232 single user mode, remove that script from the */rc.d directory.
1233 Please report the problem to the port's maintainer, and the
1234 freebsd-ports@freebsd.org mailing list.
1237 The nodev mount option was deprecated in RELENG_6 (where it
1238 was a no-op), and is now unsupported. If you have nodev or dev listed
1239 in /etc/fstab, remove it, otherwise it will result in a mount error.
1242 ABI between ipfw(4) and ipfw(8) has been changed. You need
1243 to rebuild ipfw(8) when rebuilding kernel.
1246 rp(4)'s device files now contain the unit number.
1247 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1250 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1251 Its /etc/rc.conf.d configuration file has been `ppp' from
1252 the beginning, and hence there is no need to touch it.
1255 Now most modules get their build-time options from the kernel
1256 configuration file. A few modules still have fixed options
1257 due to their non-conformant implementation, but they will be
1258 corrected eventually. You may need to review the options of
1259 the modules in use, explicitly specify the non-default options
1260 in the kernel configuration file, and rebuild the kernel and
1264 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1265 to turn polling(4) on your interfaces.
1268 The old bridge(4) implementation was retired. The new
1269 if_bridge(4) serves as a full functional replacement.
1272 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1273 to conform to POSIX-2001. This change broke an ABI
1274 compatibility on 64 bit architecture. You have to recompile
1275 userland programs that use getaddrinfo(3) on 64 bit
1279 RELENG_6 branched here.
1282 The pccard_ifconfig rc.conf variable has been removed and a new
1283 variable, ifconfig_DEFAULT has been introduced. Unlike
1284 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1285 do not have ifconfig_ifn entries rather than just those in
1286 removable_interfaces.
1289 Some previous versions of PAM have permitted the use of
1290 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1291 to third party PAM modules in /usr/local/lib. A change has been
1292 made to require the use of absolute paths in order to avoid
1293 ambiguity and dependence on library path configuration, which may
1294 affect existing configurations.
1297 Major changes to network interface API. All drivers must be
1298 recompiled. Drivers not in the base system will need to be
1299 updated to the new APIs.
1302 Changes were made to kinfo_proc in sys/user.h. Please recompile
1303 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1304 will not behave correctly.
1306 The API and ABI for hwpmc(4) have changed with the addition
1307 of sampling support. Please recompile lib/libpmc(3) and
1308 usr.sbin/{pmcstat,pmccontrol}.
1311 The OpenBSD dhclient was imported in place of the ISC dhclient
1312 and the network interface configuration scripts were updated
1313 accordingly. If you use DHCP to configure your interfaces, you
1314 must now run devd. Also, DNS updating was lost so you will need
1315 to find a workaround if you use this feature.
1317 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1318 sure to run mergemaster -p (like you are supposed to do every time
1322 if_bridge was added to the tree. This has changed struct ifnet.
1323 Please recompile userland and all network related modules.
1326 The n_net of a struct netent was changed to an uint32_t, and
1327 1st argument of getnetbyaddr() was changed to an uint32_t, to
1328 conform to POSIX-2001. These changes broke an ABI
1329 compatibility on 64 bit architecture. With these changes,
1330 shlib major of libpcap was bumped. You have to recompile
1331 userland programs that use getnetbyaddr(3), getnetbyname(3),
1332 getnetent(3) and/or libpcap on 64 bit architecture.
1335 Kernel parsing of extra options on '#!' first lines of shell
1336 scripts has changed. Lines with multiple options likely will
1337 fail after this date. For full details, please see
1338 http://people.freebsd.org/~gad/Updating-20050528.txt
1341 The packet filter (pf) code has been updated to OpenBSD 3.7
1342 Please note the changed anchor syntax and the fact that
1343 authpf(8) now needs a mounted fdescfs(5) to function.
1346 The NO_MIXED_MODE kernel option has been removed from the i386
1347 amd64 platforms as its use has been superceded by the new local
1348 APIC timer code. Any kernel config files containing this option
1352 The on-disk format of LC_CTYPE files was changed to be machine
1353 independent. Please make sure NOT to use NO_CLEAN buildworld
1354 when crossing this point. Crossing this point also requires
1355 recompile or reinstall of all locale depended packages.
1358 The ifi_epoch member of struct if_data has been changed to
1359 contain the uptime at which the interface was created or the
1360 statistics zeroed rather then the wall clock time because
1361 wallclock time may go backwards. This should have no impact
1362 unless an snmp implementation is using this value (I know of
1363 none at this point.)
1366 The acpi_perf and acpi_throttle drivers are now part of the
1367 acpi(4) main module. They are no longer built separately.
1370 The layout of struct image_params has changed. You have to
1371 recompile all compatibility modules (linux, svr4, etc) for use
1372 with the new kernel.
1375 The p4tcc driver has been merged into cpufreq(4). This makes
1376 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1377 compile in "device cpufreq" to restore this functionality.
1380 The responsibility of recomputing the file system summary of
1381 a SoftUpdates-enabled dirty volume has been transferred to the
1382 background fsck. A rebuild of fsck(8) utility is recommended
1383 if you have updated the kernel.
1385 To get the old behavior (recompute file system summary at mount
1386 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1387 mounting the new volume.
1390 The cpufreq import is complete. As part of this, the sysctls for
1391 acpi(4) throttling have been removed. The power_profile script
1392 has been updated, so you can use performance/economy_cpu_freq in
1393 rc.conf(5) to set AC on/offline cpu frequencies.
1396 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1397 requires recompiling libnetgraph and userland netgraph utilities.
1400 Support for abbreviated forms of a number of ipfw options is
1401 now deprecated. Warnings are printed to stderr indicating the
1402 correct full form when a match occurs. Some abbreviations may
1403 be supported at a later date based on user feedback. To be
1404 considered for support, abbreviations must be in use prior to
1405 this commit and unlikely to be confused with current key words.
1408 By a popular demand, a lot of NOFOO options were renamed
1409 to NO_FOO (see bsd.compat.mk for a full list). The old
1410 spellings are still supported, but will cause annoying
1411 warnings on stderr. Make sure you upgrade properly (see
1412 the COMMON ITEMS: section later in this file).
1415 Auto-loading of ancillary wlan modules such as wlan_wep has
1416 been temporarily disabled; you need to statically configure
1417 the modules you need into your kernel or explicitly load them
1418 prior to use. Specifically, if you intend to use WEP encryption
1419 with an 802.11 device load/configure wlan_wep; if you want to
1420 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1421 and wlan_xauth as required.
1424 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1425 (``enable lqr''), older versions would revert to LCP ECHO mode on
1426 negotiation failure. Now, ``enable echo'' is required for this
1427 behaviour. The ppp version number has been bumped to 3.4.2 to
1431 The wlan support has been updated to split the crypto support
1432 into separate modules. For static WEP you must configure the
1433 wlan_wep module in your system or build and install the module
1434 in place where it can be loaded (the kernel will auto-load
1435 the module when a wep key is configured).
1438 The ath driver has been updated to split the tx rate control
1439 algorithm into a separate module. You need to include either
1440 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1443 Support for systems with an 80386 CPU has been removed. Please
1444 use FreeBSD 5.x or earlier on systems with an 80386.
1447 We have had a hack which would mount the root filesystem
1448 R/W if the device were named 'md*'. As part of the vnode
1449 work I'm doing I have had to remove this hack. People
1450 building systems which use preloaded MD root filesystems
1451 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1452 their /etc/rc scripts.
1455 FreeBSD 5.3 shipped here.
1458 The size of struct tcpcb has changed again due to the removal
1459 of RFC1644 T/TCP. You have to recompile userland programs that
1460 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1463 The size of struct tcpcb has changed. You have to recompile
1464 userland programs that read kmem for tcp sockets directly
1465 (netstat, sockstat, etc.)
1468 RELENG_5 branched here. For older entries, please see updating
1469 in the RELENG_5 branch.
1475 Avoid using make -j when upgrading. From time to time in the
1476 past there have been problems using -j with buildworld and/or
1477 installworld. This is especially true when upgrading between
1478 "distant" versions (eg one that cross a major release boundary
1479 or several minor releases, or when several months have passed
1480 on the -current branch).
1482 Sometimes, obscure build problems are the result of environment
1483 poisoning. This can happen because the make utility reads its
1484 environment when searching for values for global variables.
1485 To run your build attempts in an "environmental clean room",
1486 prefix all make commands with 'env -i '. See the env(1) manual
1487 page for more details.
1489 When upgrading from one major version to another it is generally
1490 best to upgrade to the latest code in the currently installed branch
1491 first, then do an upgrade to the new branch. This is the best-tested
1492 upgrade path, and has the highest probability of being successful.
1493 Please try this approach before reporting problems with a major
1498 If you are updating from a prior version of FreeBSD (even one just
1499 a few days old), you should follow this procedure. It is the most
1500 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1502 make kernel-toolchain
1503 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1504 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1506 To test a kernel once
1507 ---------------------
1508 If you just want to boot a kernel once (because you are not sure
1509 if it works, or if you want to boot a known bad kernel to provide
1510 debugging information) run
1511 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1512 nextboot -k testkernel
1514 To just build a kernel when you know that it won't mess you up
1515 --------------------------------------------------------------
1516 This assumes you are already running a 5.X system. Replace
1517 ${arch} with the architecture of your machine (e.g. "i386",
1518 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1520 cd src/sys/${arch}/conf
1521 config KERNEL_NAME_HERE
1522 cd ../compile/KERNEL_NAME_HERE
1527 If this fails, go to the "To build a kernel" section.
1529 To rebuild everything and install it on the current system.
1530 -----------------------------------------------------------
1531 # Note: sometimes if you are running current you gotta do more than
1532 # is listed here if you are upgrading from a really old current.
1534 <make sure you have good level 0 dumps>
1536 make kernel KERNCONF=YOUR_KERNEL_HERE
1538 <reboot in single user> [3]
1546 To cross-install current onto a separate partition
1547 --------------------------------------------------
1548 # In this approach we use a separate partition to hold
1549 # current's root, 'usr', and 'var' directories. A partition
1550 # holding "/", "/usr" and "/var" should be about 2GB in
1553 <make sure you have good level 0 dumps>
1556 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1557 <maybe newfs current's root partition>
1558 <mount current's root partition on directory ${CURRENT_ROOT}>
1559 make installworld DESTDIR=${CURRENT_ROOT}
1560 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1561 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1562 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1563 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1564 <reboot into current>
1565 <do a "native" rebuild/install as described in the previous section>
1566 <maybe install compatibility libraries from ports/misc/compat*>
1570 To upgrade in-place from 5.x-stable to current
1571 ----------------------------------------------
1572 <make sure you have good level 0 dumps>
1574 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1576 <reboot in single user> [3]
1583 Make sure that you've read the UPDATING file to understand the
1584 tweaks to various things you need. At this point in the life
1585 cycle of current, things change often and you are on your own
1586 to cope. The defaults can also change, so please read ALL of
1587 the UPDATING entries.
1589 Also, if you are tracking -current, you must be subscribed to
1590 freebsd-current@freebsd.org. Make sure that before you update
1591 your sources that you have read and understood all the recent
1592 messages there. If in doubt, please track -stable which has
1593 much fewer pitfalls.
1595 [1] If you have third party modules, such as vmware, you
1596 should disable them at this point so they don't crash your
1599 [3] From the bootblocks, boot -s, and then do
1604 adjkerntz -i # if CMOS is wall time
1605 Also, when doing a major release upgrade, it is required that
1606 you boot into single user mode to do the installworld.
1608 [4] Note: This step is non-optional. Failure to do this step
1609 can result in a significant reduction in the functionality of the
1610 system. Attempting to do it by hand is not recommended and those
1611 that pursue this avenue should read this file carefully, as well
1612 as the archives of freebsd-current and freebsd-hackers mailing lists
1613 for potential gotchas.
1615 [5] Usually this step is a noop. However, from time to time
1616 you may need to do this if you get unknown user in the following
1617 step. It never hurts to do it all the time. You may need to
1618 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1619 install) after the buildworld before this step if you last updated
1620 from current before 20020224 or from -stable before 20020408.
1622 [8] In order to have a kernel that can run the 4.x binaries
1623 needed to do an installworld, you must include the COMPAT_FREEBSD4
1624 option in your kernel. Failure to do so may leave you with a system
1625 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1626 is required to run the 5.x binaries on more recent kernels.
1628 Make sure that you merge any new devices from GENERIC since the
1629 last time you updated your kernel config file.
1631 [9] When checking out sources, you must include the -P flag to have
1632 cvs prune empty directories.
1634 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1635 "?=" instead of the "=" assignment operator, so that buildworld can
1636 override the CPUTYPE if it needs to.
1638 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1639 not on the command line, or in /etc/make.conf. buildworld will
1640 warn if it is improperly defined.
1643 This file contains a list, in reverse chronological order, of major
1644 breakages in tracking -current. Not all things will be listed here,
1645 and it only starts on October 16, 2004. Updating files can found in
1646 previous releases if your system is older than this.
1648 Copyright information:
1650 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1652 Redistribution, publication, translation and use, with or without
1653 modification, in full or in part, in any form or format of this
1654 document are permitted without further permission from the author.
1656 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1657 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1658 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1659 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1660 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1661 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1662 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1663 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1664 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1665 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1666 POSSIBILITY OF SUCH DAMAGE.
1668 If you find this document useful, and you want to, you may buy the
1671 Contact Warner Losh if you have any questions about your use of