1 Updating Information for FreeBSD current users
3 This file is maintained and copyrighted by M. Warner Losh
4 <imp@village.org>. See end of file for further details. For commonly
5 done items, please see the COMMON ITEMS: section later in the file.
7 Items affecting the ports and packages system can be found in
8 /usr/ports/UPDATING. Please read that file before running
11 NOTE TO PEOPLE WHO THINK THAT FreeBSD 8.x IS SLOW ON IA64 OR SUN4V:
12 For ia64 the INVARIANTS and INVARIANT_SUPPORT kernel options
13 were left in the GENERIC kernel because the kernel does not
14 work properly without them. For sun4v all of the normal kernel
15 debugging tools present in HEAD were left in place because
16 sun4v support still needs work to become production ready.
18 20100920: p5 FreeBSD-SA-10:08.bzip2
19 Fix an integer overflow in RLE length parsing when decompressing
22 20100713: p4 FreeBSD-SA-10:07.mbuf
23 Correctly copy the M_RDONLY flag when duplicating a reference
24 to an mbuf external buffer.
26 20100526: p3 FreeBSD-SA-10:04.jail, FreeBSD-SA-10:05.opie,
27 FreeBSD-SA-10:06.nfsclient
28 Change the current working directory to be inside the jail created by
29 the jail(8) command. [10:04]
31 Fix a one-NUL-byte buffer overflow in libopie. [10:05]
33 Correctly sanity-check a buffer length in nfs mount. [10:06]
35 20100106: p2 FreeBSD-SA-10:01.bind, FreeBSD-SA-10:02.ntpd,
36 FreeBSD-SA-10:03.zfs, FreeBSD-EN-10:01.freebsd
37 Fix BIND named(8) cache poisoning with DNSSEC validation.
40 Fix ntpd mode 7 denial of service. [SA-10:02]
42 Fix ZFS ZIL playback with insecure permissions. [SA-10:03]
44 Various FreeBSD 8.0-RELEASE improvements. [EN-10:01]
46 20091203: p1 FreeBSD-SA-09:15.ssl, FreeBSD-SA-09:16.rtld,
47 FreeBSD-SA-09:17.freebsd-update
48 Disable SSL renegotiation in order to protect against a serious
49 protocol flaw. [09:15]
51 Correctly handle failures from unsetenv resulting from a corrupt
52 environment in rtld-elf. [09:16]
54 Fix permissions in freebsd-update in order to prevent leakage of
55 sensitive files. [09:17]
61 802.11s D3.03 support was committed. This is incompatible with
62 the previous code, which was based on D3.0.
65 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
66 mount(8) and -a option for df(1) to see them.
69 Remove the option STOP_NMI. The default action is now to use NMI
70 only for KDB via the newly introduced function stop_cpus_hard()
71 and maintain stop_cpus() to just use a normal IPI_STOP on ia32
78 Bump the shared library version numbers for all libraries that
79 do not use symbol versioning as part of the 8.0-RELEASE cycle.
80 Bump __FreeBSD_version to 800105.
83 Due to changes in the implementation of virtual network stack
84 support, all network-related kernel modules must be recompiled.
85 As this change breaks the ABI, bump __FreeBSD_version to 800104.
88 The TOE interface to the TCP syncache has been modified to remove struct
89 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
90 cxgb driver is the only TOE consumer affected by this change, and needs
91 to be recompiled along with the kernel. As this change breaks the ABI,
92 bump __FreeBSD_version to 800103.
95 Padding has been added to struct tcpcb, sackhint and tcpstat in
96 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
97 maintainig the ABI. However, this change breaks the ABI, so bump
98 __FreeBSD_version to 800102. User space tools that rely on the size of
99 any of these structs (e.g. sockstat) need to be recompiled.
102 The NFS_LEGACYRPC option has been removed along with the old
103 kernel RPC implementation that this option selected. Kernel
104 configurations may need to be adjusted.
107 The network interface device nodes at /dev/net/<interface> have
108 been removed. All ioctl operations can be performed the normal
109 way using routing sockets. The kqueue functionality can
110 generally be replaced with routing sockets.
113 The documentation from the FreeBSD Documentation Project
114 (Handbook, FAQ, etc.) is now installed via packages by
115 sysinstall(8) and under the /usr/local/share/doc/freebsd
116 directory instead of /usr/share/doc.
119 The ABI of various structures related to the SYSV IPC API have
120 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
121 kernel options now all require COMPAT_FREEBSD7.
122 Bump __FreeBSD_version to 800100.
125 Layout of struct vnet has changed as routing related variables
126 were moved to their own Vimage module. Modules need to be
127 recompiled. Bump __FreeBSD_version to 800099.
130 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
131 and 1024 respectively. As long as no more than 16 groups per
132 process are used, no changes should be visible. When more
133 than 16 groups are used, old binaries may fail if they call
134 getgroups() or getgrouplist() with statically sized storage.
135 Recompiling will work around this, but applications should be
136 modified to use dynamically allocated storage for group arrays
137 as POSIX.1-2008 does not cap an implementation's number of
138 supported groups at NGROUPS_MAX+1 as previous versions did.
140 NFS and portalfs mounts may also be affected as the list of
141 groups is truncated to 16. Users of NFS who use more than 16
142 groups, should take care that negative group permissions are not
143 used on the exported file systems as they will not be reliable
144 unless a GSSAPI based authentication method is used.
147 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
148 This option compiles in the support for adaptive spinning for lockmgrs
149 which want to enable it. The lockinit() function now accepts the
150 flag LK_ADAPTIVE in order to make the lock object subject to
151 adaptive spinning when both held in write and read mode.
154 The layout of the structure returned by IEEE80211_IOC_STA_INFO
155 has changed. User applications that use this ioctl need to be
159 The layout of struct thread has changed. Kernel and modules
163 The layout of structs ifnet, domain, protosw and vnet_net has
164 changed. Kernel modules need to be rebuilt.
165 Bump __FreeBSD_version to 800097.
168 window(1) has been removed from the base system. It can now be
169 installed from ports. The port is called misc/window.
172 The way we are storing and accessing `routing table' entries
173 has changed. Programs reading the FIB, like netstat, need to
177 A new netisr implementation has been added for FreeBSD 8. Network
178 file system modules, such as igmp, ipdivert, and others, should be
180 Bump __FreeBSD_version to 800096.
183 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
187 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
188 Bump __FreeBSD_version to 800094.
191 Add mnt_xflag field to 'struct mount'. File system modules
193 Bump __FreeBSD_version to 800093.
196 The compiling option ADAPTIVE_SX has been retired while it has been
197 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
198 The KPI for sx_init_flags() changes as accepting flags:
199 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
200 has been introduced in order to handle the reversed logic.
201 Bump __FreeBSD_version to 800092.
204 Add support for hierarchical jails. Remove global securelevel.
205 Bump __FreeBSD_version to 800091.
208 The layout of struct vnet_net has changed, therefore modules
210 Bump __FreeBSD_version to 800090.
213 The newly imported zic(8) produces a new format in the
214 output. Please run tzsetup(8) to install the newly created
215 data to /etc/localtime.
218 The sysctl tree for the usb stack has renamed from hw.usb2.* to
219 hw.usb.* and is now consistent again with previous releases.
222 802.11 monitor mode support was revised and driver api's
223 were changed. Drivers dependent on net80211 now support
224 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
225 user-visible data structures were changed but applications
226 that use DLT_IEEE802_11 may require changes.
227 Bump __FreeBSD_version to 800088.
230 The layout of the following structs has changed: sysctl_oid,
231 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
232 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
233 panics may be experienced. World rebuild is required for
234 correctly checking networking state from userland.
235 Bump __FreeBSD_version to 800085.
238 MLDv2 and Source-Specific Multicast (SSM) have been merged
239 to the IPv6 stack. VIMAGE hooks are in but not yet used.
240 The implementation of SSM within FreeBSD's IPv6 stack closely
241 follows the IPv4 implementation.
243 For kernel developers:
245 * The most important changes are that the ip6_output() and
246 ip6_input() paths no longer take the IN6_MULTI_LOCK,
247 and this lock has been downgraded to a non-recursive mutex.
249 * As with the changes to the IPv4 stack to support SSM, filtering
250 of inbound multicast traffic must now be performed by transport
251 protocols within the IPv6 stack. This does not apply to TCP and
252 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
254 * The KPIs used by IPv6 multicast are similar to those used by
255 the IPv4 stack, with the following differences:
256 * im6o_mc_filter() is analogous to imo_multicast_filter().
257 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
258 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
259 * IN6_LOOKUP_MULTI() has been deprecated and removed.
260 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
261 for MLDv1 have an additional 'timer' argument which is used to
262 jitter the initial membership report for the solicited-node
263 multicast membership on-link.
264 * This is not strictly needed for MLDv2, which already jitters
265 its report transmissions. However, the 'timer' argument is
266 preserved in case MLDv1 is active on the interface.
268 * The KAME linked-list based IPv6 membership implementation has
269 been refactored to use a vector similar to that used by the IPv4
271 Code which maintains a list of its own multicast memberships
272 internally, e.g. carp, has been updated to reflect the new
275 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
276 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
277 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
278 implementation constraint which needs to be addressed in HEAD.
280 For application developers:
282 * The changes are broadly similar to those made for the IPv4
285 * The use of IPv4 and IPv6 multicast socket options on the same
286 socket, using mapped addresses, HAS NOT been tested or supported.
288 * There are a number of issues with the implementation of various
289 IPv6 multicast APIs which need to be resolved in the API surface
290 before the implementation is fully compatible with KAME userland
291 use, and these are mostly to do with interface index treatment.
293 * The literature available discusses the use of either the delta / ASM
294 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
295 using setsourcefilter(3)/getsourcefilter(3). For more information
296 please refer to RFC 3768, 'Socket Interface Extensions for
297 Multicast Source Filters'.
299 * Applications which use the published RFC 3678 APIs should be fine.
301 For systems administrators:
303 * The mtest(8) utility has been refactored to support IPv6, in
304 addition to IPv4. Interface addresses are no longer accepted
305 as arguments, their names must be used instead. The utility
306 will map the interface name to its first IPv4 address as
307 returned by getifaddrs(3).
309 * The ifmcstat(8) utility has also been updated to print the MLDv2
310 endpoint state and source filter lists via sysctl(3).
312 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
313 loopback of IPv6 multicast datagrams by default; it defaults to 1
314 to preserve the existing behaviour. Disabling multicast loopback is
315 recommended for optimal system performance.
317 * The IPv6 MROUTING code has been changed to examine this sysctl
318 instead of attempting to perform a group lookup before looping
319 back forwarded datagrams.
321 Bump __FreeBSD_version to 800084.
324 Implement low-level Bluetooth HCI API.
325 Bump __FreeBSD_version to 800083.
328 The layout of struct malloc_type, used by modules to register new
329 memory allocation types, has changed. Most modules will need to
330 be rebuilt or panics may be experienced.
331 Bump __FreeBSD_version to 800081.
334 Anticipate overflowing inp_flags - add inp_flags2.
335 This changes most offsets in inpcb, so checking v4 connection
336 state will require a world rebuild.
337 Bump __FreeBSD_version to 800080.
340 Add an llentry to struct route and struct route_in6. Modules
341 embedding a struct route will need to be recompiled.
342 Bump __FreeBSD_version to 800079.
345 The size of rt_metrics_lite and by extension rtentry has changed.
346 Networking administration apps will need to be recompiled.
347 The route command now supports show as an alias for get, weighting
348 of routes, sticky and nostick flags to alter the behavior of stateful
350 Bump __FreeBSD_version to 800078.
353 Do not use Giant for kbdmux(4) locking. This is wrong and
354 apparently causing more problems than it solves. This will
355 re-open the issue where interrupt handlers may race with
356 kbdmux(4) in polling mode. Typical symptoms include (but
357 not limited to) duplicated and/or missing characters when
358 low level console functions (such as gets) are used while
359 interrupts are enabled (for example geli password prompt,
360 mountroot prompt etc.). Disabling kbdmux(4) may help.
363 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
364 kernel modules referencing any of the above need to be recompiled.
365 Bump __FreeBSD_version to 800075.
368 GEOM_PART has become the default partition slicer for storage devices,
369 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
370 introduces some changes:
372 MSDOS/EBR: the devices created from MSDOS extended partition entries
373 (EBR) can be named differently than with GEOM_MBR and are now symlinks
374 to devices with offset-based names. fstabs may need to be modified.
376 BSD: the "geometry does not match label" warning is harmless in most
377 cases but it points to problems in file system misalignment with
378 disk geometry. The "c" partition is now implicit, covers the whole
379 top-level drive and cannot be (mis)used by users.
381 General: Kernel dumps are now not allowed to be written to devices
382 whose partition types indicate they are meant to be used for file
383 systems (or, in case of MSDOS partitions, as something else than
386 Most of these changes date approximately from 200812.
389 The uscanner(4) driver has been removed from the kernel. This follows
390 Linux removing theirs in 2.6 and making libusb the default interface
394 The multicast forwarding code has been cleaned up. netstat(1)
395 only relies on KVM now for printing bandwidth upcall meters.
396 The IPv4 and IPv6 modules are split into ip_mroute_mod and
397 ip6_mroute_mod respectively. The config(5) options for statically
398 compiling this code remain the same, i.e. 'options MROUTING'.
401 Support for the IFF_NEEDSGIANT network interface flag has been
402 removed, which means that non-MPSAFE network device drivers are no
403 longer supported. In particular, if_ar, if_sr, and network device
404 drivers from the old (legacy) USB stack can no longer be built or
408 POSIX.1 Native Language Support (NLS) has been enabled in libc and
409 a bunch of new language catalog files have also been added.
410 This means that some common libc messages are now localized and
411 they depend on the LC_MESSAGES environmental variable.
414 The k8temp(4) driver has been renamed to amdtemp(4) since
415 support for K10 and K11 CPU families was added.
418 IGMPv3 and Source-Specific Multicast (SSM) have been merged
419 to the IPv4 stack. VIMAGE hooks are in but not yet used.
421 For kernel developers, the most important changes are that the
422 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
423 and this lock has been downgraded to a non-recursive mutex.
425 Transport protocols (UDP, Raw IP) are now responsible for filtering
426 inbound multicast traffic according to group membership and source
427 filters. The imo_multicast_filter() KPI exists for this purpose.
428 Transports which do not use multicast (SCTP, TCP) already reject
429 multicast by default. Forwarding and receive performance may improve
430 as a mutex acquisition is no longer needed in the ip_input()
431 low-level input path. in_addmulti() and in_delmulti() are shimmed
432 to new KPIs which exist to support SSM in-kernel.
434 For application developers, it is recommended that loopback of
435 multicast datagrams be disabled for best performance, as this
436 will still cause the lock to be taken for each looped-back
437 datagram transmission. The net.inet.ip.mcast.loop sysctl may
438 be tuned to 0 to disable loopback by default; it defaults to 1
439 to preserve the existing behaviour.
441 For systems administrators, to obtain best performance with
442 multicast reception and multiple groups, it is always recommended
443 that a card with a suitably precise hash filter is used. Hash
444 collisions will still result in the lock being taken within the
445 transport protocol input path to check group membership.
447 If deploying FreeBSD in an environment with IGMP snooping switches,
448 it is recommended that the net.inet.igmp.sendlocal sysctl remain
449 enabled; this forces 224.0.0.0/24 group membership to be announced
452 The size of 'struct igmpstat' has changed; netstat needs to be
453 recompiled to reflect this.
454 Bump __FreeBSD_version to 800070.
457 libusb20.so.1 is now installed as libusb.so.1 and the ports system
458 updated to use it. This requires a buildworld/installworld in order to
459 update the library and dependencies (usbconfig, etc). Its advisable to
460 rebuild all ports which uses libusb. More specific directions are given
461 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
462 libusb are no longer required and can be removed.
465 A workaround is committed to allow the creation of System V shared
466 memory segment of size > 2 GB on the 64-bit architectures.
467 Due to a limitation of the existing ABI, the shm_segsz member
468 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
469 wrong for large segments. Note that limits must be explicitly
470 raised to allow such segments to be created.
473 The layout of struct ifnet has changed, requiring a rebuild of all
474 network device driver modules.
477 The /dev handling for the new USB stack has changed, a
478 buildworld/installworld is required for libusb20.
481 The new USB2 stack has now been permanently moved in and all kernel and
482 module names reverted to their previous values (eg, usb, ehci, ohci,
483 ums, ...). The old usb stack can be compiled in by prefixing the name
484 with the letter 'o', the old usb modules have been removed.
485 Updating entry 20090216 for xorg and 20090215 for libmap may still
489 The rc.conf(5) option if_up_delay has been renamed to
490 defaultroute_delay to better reflect its purpose. If you have
491 customized this setting in /etc/rc.conf you need to update it to
495 xorg 7.4 wants to configure its input devices via hald which does not
496 yet work with USB2. If the keyboard/mouse does not work in xorg then
498 Option "AllowEmptyInput" "off"
499 to your ServerLayout section. This will cause X to use the configured
500 kbd and mouse sections from your xorg.conf.
503 The GENERIC kernels for all architectures now default to the new USB2
504 stack. No kernel config options or code have been removed so if a
505 problem arises please report it and optionally revert to the old USB
506 stack. If you are loading USB kernel modules or have a custom kernel
507 that includes GENERIC then ensure that usb names are also changed over,
508 eg uftdi -> usb2_serial_ftdi.
510 Older programs linked against the ports libusb 0.1 need to be
511 redirected to the new stack's libusb20. /etc/libmap.conf can
513 # Map old usb library to new one for usb2 stack
514 libusb-0.1.so.8 libusb20.so.1
517 The ichsmb(4) driver has been changed to require SMBus slave
518 addresses be left-justified (xxxxxxx0b) rather than right-justified.
519 All of the other SMBus controller drivers require left-justified
520 slave addresses, so this change makes all the drivers provide the
524 INET6 statistics (struct ip6stat) was updated.
525 netstat(1) needs to be recompiled.
528 NTFS has been removed from GENERIC kernel on amd64 to match
529 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
530 will load ntfs.ko module automatically when NTFS support is
531 actually needed, unless ntfs.ko is not installed or security
532 level prohibits loading kernel modules. If either is the case,
533 "options NTFS" has to be added into kernel config.
536 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
537 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
538 800061. User space tools that rely on the size of struct tcpcb in
539 tcp_var.h (e.g. sockstat) need to be recompiled.
542 ng_tty(4) module updated to match the new TTY subsystem.
543 Due to API change, user-level applications must be updated.
544 New API support added to mpd5 CVS and expected to be present
545 in next mpd5.3 release.
548 With __FreeBSD_version 800060 the makefs tool is part of
549 the base system (it was a port).
552 The afdata and ifnet locks have been changed from mutexes to
553 rwlocks, network modules will need to be re-compiled.
556 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
557 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
558 The new code reduced struct rtentry{} by 16 bytes on 32-bit
559 architecture and 40 bytes on 64-bit architecture. The userland
560 applications "arp" and "ndp" have been updated accordingly.
561 The output from "netstat -r" shows only routing entries and
562 none of the L2 information.
565 __FreeBSD_version 800057 marks the switchover from the
566 binary ath hal to source code. Users must add the line:
568 options AH_SUPPORT_AR5416
570 to their kernel config files when specifying:
574 The ath_hal module no longer exists; the code is now compiled
575 together with the driver in the ath module. It is now
576 possible to tailor chip support (i.e. reduce the set of chips
577 and thereby the code size); consult ath_hal(4) for details.
580 __FreeBSD_version 800054 adds memory barriers to
581 <machine/atomic.h>, new interfaces to ifnet to facilitate
582 multiple hardware transmit queues for cards that support
583 them, and a lock-less ring-buffer implementation to
584 enable drivers to more efficiently manage queueing of
588 A new version of ZFS (version 13) has been merged to -HEAD.
589 This version has zpool attribute "listsnapshots" off by
590 default, which means "zfs list" does not show snapshots,
591 and is the same as Solaris behavior.
594 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
597 The uhci, ohci, ehci and slhci USB Host controller drivers have
598 been put into separate modules. If you load the usb module
599 separately through loader.conf you will need to load the
600 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
601 controller add the following to loader.conf:
607 The ABI used by the PMC toolset has changed. Please keep
608 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
612 atapci kernel module now includes only generic PCI ATA
613 driver. AHCI driver moved to ataahci kernel module.
614 All vendor-specific code moved into separate kernel modules:
615 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
616 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
617 atamarvell, atamicron, atanational, atanetcell, atanvidia,
618 atapromise, ataserverworks, atasiliconimage, atasis, atavia
621 The TTY subsystem of the kernel has been replaced by a new
622 implementation, which provides better scalability and an
623 improved driver model. Most common drivers have been migrated to
624 the new TTY subsystem, while others have not. The following
625 drivers have not yet been ported to the new TTY layer:
628 cy, digi, rc, rp, sio
634 ng_h4, ng_tty, ppp, sl, snp
636 Adding these drivers to your kernel configuration file shall
637 cause compilation to fail.
640 ntpd has been upgraded to 4.2.4p5.
643 OpenSSH has been upgraded to 5.1p1.
645 For many years, FreeBSD's version of OpenSSH preferred DSA
646 over RSA for host and user authentication keys. With this
647 upgrade, we've switched to the vendor's default of RSA over
648 DSA. This may cause upgraded clients to warn about unknown
649 host keys even for previously known hosts. Users should
650 follow the usual procedure for verifying host keys before
651 accepting the RSA key.
653 This can be circumvented by setting the "HostKeyAlgorithms"
654 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
657 Please note that the sequence of keys offered for
658 authentication has been changed as well. You may want to
659 specify IdentityFile in a different order to revert this
663 The sio(4) driver has been removed from the i386 and amd64
664 kernel configuration files. This means uart(4) is now the
665 default serial port driver on those platforms as well.
667 To prevent collisions with the sio(4) driver, the uart(4) driver
668 uses different names for its device nodes. This means the
669 onboard serial port will now most likely be called "ttyu0"
670 instead of "ttyd0". You may need to reconfigure applications to
671 use the new device names.
673 When using the serial port as a boot console, be sure to update
674 /boot/device.hints and /etc/ttys before booting the new kernel.
675 If you forget to do so, you can still manually specify the hints
676 at the loader prompt:
678 set hint.uart.0.at="isa"
679 set hint.uart.0.port="0x3F8"
680 set hint.uart.0.flags="0x10"
681 set hint.uart.0.irq="4"
685 The gpt(8) utility has been removed. Use gpart(8) to partition
689 The version that Linuxulator emulates was changed from 2.4.2
690 to 2.6.16. If you experience any problems with Linux binaries
691 please try to set sysctl compat.linux.osrelease to 2.4.2 and
692 if it fixes the problem contact emulation mailing list.
695 ISDN4BSD (I4B) was removed from the src tree. You may need to
696 update a your kernel configuration and remove relevant entries.
699 I have checked in code to support multiple routing tables.
700 See the man pages setfib(1) and setfib(2).
701 This is a hopefully backwards compatible version,
702 but to make use of it you need to compile your kernel
703 with options ROUTETABLES=2 (or more up to 16).
706 The 802.11 wireless support was redone to enable multi-bss
707 operation on devices that are capable. The underlying device
708 is no longer used directly but instead wlanX devices are
709 cloned with ifconfig. This requires changes to rc.conf files.
711 ifconfig_ath0="WPA DHCP"
714 ifconfig_wlan0="WPA DHCP"
715 see rc.conf(5) for more details. In addition, mergemaster of
716 /etc/rc.d is highly recommended. Simultaneous update of userland
717 and kernel wouldn't hurt either.
719 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
720 modules were merged into the base wlan module. All references
721 to these modules (e.g. in kernel config files) must be removed.
724 psm(4) has gained write(2) support in native operation level.
725 Arbitrary commands can be written to /dev/psm%d and status can
726 be read back from it. Therefore, an application is responsible
727 for status validation and error recovery. It is a no-op in
728 other operation levels.
731 Support for KSE threading has been removed from the kernel. To
732 run legacy applications linked against KSE libmap.conf may
733 be used. The following libmap.conf may be used to ensure
734 compatibility with any prior release:
736 libpthread.so.1 libthr.so.1
737 libpthread.so.2 libthr.so.2
738 libkse.so.3 libthr.so.3
741 The layout of struct vmspace has changed. This affects libkvm
742 and any executables that link against libkvm and use the
743 kvm_getprocs() function. In particular, but not exclusively,
744 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
745 The effects are minimal, but it's advisable to upgrade world
749 The latest em driver no longer has support in it for the
750 82575 adapter, this is now moved to the igb driver. The
751 split was done to make new features that are incompatible
752 with older hardware easier to do.
755 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
756 likewise the kernel option is now GEOM_LINUX_LVM.
759 The default NFS mount mode has changed from UDP to TCP for
760 increased reliability. If you rely on (insecurely) NFS
761 mounting across a firewall you may need to update your
765 Belatedly note the addition of m_collapse for compacting
769 The fts(3) structures have been changed to use adequate
770 integer types for their members and so to be able to cope
771 with huge file trees. The old fts(3) ABI is preserved
772 through symbol versioning in libc, so third-party binaries
773 using fts(3) should still work, although they will not take
774 advantage of the extended types. At the same time, some
775 third-party software might fail to build after this change
776 due to unportable assumptions made in its source code about
777 fts(3) structure members. Such software should be fixed
778 by its vendor or, in the worst case, in the ports tree.
779 FreeBSD_version 800015 marks this change for the unlikely
780 case that a portable fix is impossible.
783 To upgrade to -current after this date, you must be running
784 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
785 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
788 The ADAPTIVE_GIANT kernel option has been retired because its
789 functionality is the default now.
792 The AT keyboard emulation of sunkbd(4) has been turned on
793 by default. In order to make the special symbols of the Sun
794 keyboards driven by sunkbd(4) work under X these now have
795 to be configured the same way as Sun USB keyboards driven
796 by ukbd(4) (which also does AT keyboard emulation), f.e.:
798 Option "XkbLayout" "us"
799 Option "XkbRules" "xorg"
800 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
803 It has been decided that it is desirable to provide ABI
804 backwards compatibility to the FreeBSD 4/5/6 versions of the
805 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
806 broken with the introduction of PCI domain support (see the
807 20070930 entry). Unfortunately, this required the ABI of
808 PCIOCGETCONF to be broken again in order to be able to
809 provide backwards compatibility to the old version of that
810 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
811 again. As for prominent ports this affects neither pciutils
812 nor xorg-server this time, the hal port needs to be rebuilt
816 The misnamed kthread_create() and friends have been renamed
817 to kproc_create() etc. Many of the callers already
819 I will return kthread_create() and friends in a while
820 with implementations that actually create threads, not procs.
821 Renaming corresponds with version 800002.
827 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
828 WITHOUT_LIBTHR are set.
831 The PCI code has been made aware of PCI domains. This means that
832 the location strings as used by pciconf(8) etc are now in the
833 following format: pci<domain>:<bus>:<device>[:<function>]. It
834 also means that consumers of <sys/pciio.h> potentially need to
835 be recompiled; this includes the hal and xorg-server ports.
838 The caching daemon (cached) was renamed to nscd. nscd.conf
839 configuration file should be used instead of cached.conf and
840 nscd_enable, nscd_pidfile and nscd_flags options should be used
841 instead of cached_enable, cached_pidfile and cached_flags in
845 The getfacl(1) utility now prints owning user and group name
846 instead of owning uid and gid in the three line comment header.
847 This is the same behavior as getfacl(1) on Solaris and Linux.
850 The new IPsec code is now compiled in using the IPSEC option. The
851 IPSEC option now requires "device crypto" be defined in your kernel
852 configuration. The FAST_IPSEC kernel option is now deprecated.
855 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
856 note the changed syntax - keep state is now on by default. Also
857 note the fact that ftp-proxy(8) has been changed from bottom up and
858 has been moved from libexec to usr/sbin. Changes in the ALTQ
859 handling also affect users of IPFW's ALTQ capabilities.
862 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
863 only IPsec supported by FreeBSD. The new IPsec stack
864 supports both IPv4 and IPv6. The kernel option will change
865 after the code changes have settled in. For now the kernel
866 option IPSEC is deprecated and FAST_IPSEC is the only option, that
867 will change after some settling time.
870 The wicontrol(8) utility has been removed from the base system. wi(4)
871 cards should be configured using ifconfig(8), see the man page for more
875 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
876 instead of the nve(4) driver. Please update your configuration
880 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
881 database if it is missing or older than the aliases file. If
882 desired, set the new rc.conf option sendmail_rebuild_aliases
883 to "YES" to restore that functionality.
886 The IPv4 multicast socket code has been considerably modified, and
887 moved to the file sys/netinet/in_mcast.c. Initial support for the
888 RFC 3678 Source-Specific Multicast Socket API has been added to
889 the IPv4 network stack.
891 Strict multicast and broadcast reception is now the default for
892 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
893 has now been removed.
895 The RFC 1724 hack for interface selection has been removed; the use
896 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
897 been added to replace it. Consumers such as routed will soon be
898 updated to reflect this.
900 These changes affect users who are running routed(8) or rdisc(8)
901 from the FreeBSD base system on point-to-point or unnumbered
905 The net80211 layer has changed significantly and all wireless
906 drivers that depend on it need to be recompiled. Further these
907 changes require that any program that interacts with the wireless
908 support in the kernel be recompiled; this includes: ifconfig,
909 wpa_supplicant, hostapd, and wlanstats. Users must also, for
910 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
911 if they use modules for wireless support. These modules implement
912 scanning support for station and ap modes, respectively. Failure
913 to load the appropriate module before marking a wireless interface
914 up will result in a message to the console and the device not
918 The pam_nologin(8) module ceases to provide an authentication
919 function and starts providing an account management function.
920 Consequent changes to /etc/pam.d should be brought in using
921 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
922 need manual editing as follows. Locate this line (or similar):
924 auth required pam_nologin.so no_warn
926 and change it according to this example:
928 account required pam_nologin.so no_warn
930 That is, the first word needs to be changed from "auth" to
931 "account". The new line can be moved to the account section
932 within the file for clarity. Not updating pam.conf(5) files
933 will result in nologin(5) ignored by the respective services.
936 The ether_ioctl() function has been synchronized with ioctl(2)
937 and ifnet.if_ioctl. Due to that, the size of one of its arguments
938 has changed on 64-bit architectures. All kernel modules using
939 ether_ioctl() need to be rebuilt on such architectures.
942 Improved INCLUDE_CONFIG_FILE support has been introduced to the
943 config(8) utility. In order to take advantage of this new
944 functionality, you are expected to recompile and install
945 src/usr.sbin/config. If you don't rebuild config(8), and your
946 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
947 build will be broken because of a missing "kernconfstring"
951 Symbol versioning is enabled by default. To disable it, use
952 option WITHOUT_SYMVER. It is not advisable to attempt to
953 disable symbol versioning once it is enabled; your installworld
954 will break because a symbol version-less libc will get installed
955 before the install tools. As a result, the old install tools,
956 which previously had symbol dependencies to FBSD_1.0, will fail
957 because the freshly installed libc will not have them.
959 The default threading library (providing "libpthread") has been
960 changed to libthr. If you wish to have libkse as your default,
961 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
964 The ABI breakage in sendmail(8)'s libmilter has been repaired
965 so it is no longer necessary to recompile mail filters (aka,
966 milters). If you recompiled mail filters after the 20070408
967 note, it is not necessary to recompile them again.
970 The new trunk(4) driver has been renamed to lagg(4) as it better
971 reflects its purpose. ifconfig will need to be recompiled.
974 sendmail(8) has been updated to version 8.14.1. Mail filters
975 (aka, milters) compiled against the libmilter included in the
976 base operating system should be recompiled.
979 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
980 In order to use them one must agree to the respective LICENSE in
981 share/doc/legal and define legal.intel_<name>.license_ack=1 via
982 loader.conf(5) or kenv(1). Make sure to deinstall the now
983 deprecated modules from the respective firmware ports.
986 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
987 were removed from FreeBSD's libc. These originally came from INRIA
988 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
989 deprecated in previous releases.
990 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
991 replace it as a more portable (and re-entrant) API.
994 To support interrupt filtering a modification to the newbus API
995 has occurred, ABI was broken and __FreeBSD_version was bumped
996 to 700031. Please make sure that your kernel and modules are in
998 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
1001 The IPv6 multicast forwarding code may now be loaded into GENERIC
1002 kernels by loading the ip_mroute.ko module. This is built into the
1003 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
1004 set; see src.conf(5) for more information.
1007 The output of netstat -r has changed. Without -n, we now only
1008 print a "network name" without the prefix length if the network
1009 address and mask exactly match a Class A/B/C network, and an entry
1010 exists in the nsswitch "networks" map.
1011 With -n, we print the full unabbreviated CIDR network prefix in
1012 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
1013 This change is in preparation for changes such as equal-cost
1014 multipath, and to more generally assist operational deployment
1015 of FreeBSD as a modern IPv4 router.
1018 PIM has been turned on by default in the IPv4 multicast
1019 routing code. The kernel option 'PIM' has now been removed.
1020 PIM is now built by default if option 'MROUTING' is specified.
1021 It may now be loaded into GENERIC kernels by loading the
1022 ip_mroute.ko module.
1025 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
1026 has been removed. Its functionality may be achieved by explicitly
1027 configuring gif(4) interfaces and using the 'phyint' keyword in
1029 XORP does not support source-routed IPv4 multicast tunnels nor the
1030 integrated IPIP tunneling, therefore it is not affected by this
1031 change. The __FreeBSD_version macro has been bumped to 700030.
1034 Support for PCI Message Signalled Interrupts has been
1035 re-enabled in the bge driver, only for those chips which are
1036 believed to support it properly. If there are any problems,
1037 MSI can be disabled completely by setting the
1038 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
1042 Support for PCI Message Signalled Interrupts has been
1043 disabled again in the bge driver. Many revisions of the
1044 hardware fail to support it properly. Support can be
1045 re-enabled by removing the #define of BGE_DISABLE_MSI in
1046 "src/sys/dev/bge/if_bge.c".
1049 Support for PCI Message Signalled Interrupts has been added
1050 to the bge driver. If there are any problems, MSI can be
1051 disabled completely by setting the 'hw.pci.enable_msi' and
1052 'hw.pci.enable_msix' tunables to 0 in the loader.
1055 The removal of several facets of the experimental Threading
1056 system from the kernel means that the proc and thread structures
1057 have changed quite a bit. I suggest all kernel modules that might
1058 reference these structures be recompiled.. Especially the
1062 Sound infrastructure has been updated with various fixes and
1063 improvements. Most of the changes are pretty much transparent,
1064 with exceptions of followings:
1065 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1066 moved to their own dev sysctl nodes, for example:
1067 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1068 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1069 own chardev in the form of "dsp%d.<function>%d", where <function>
1070 is p = playback, r = record and v = virtual, respectively. Users
1071 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1072 This does not affect those who are using "/dev/dsp".
1075 geom(4)'s gmirror(8) class metadata structure has been
1076 rev'd from v3 to v4. If you update across this point and
1077 your metadata is converted for you, you will not be easily
1078 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1079 kernel module will be unable to read the v4 metadata. You
1080 can resolve this by doing from the loader(8) prompt:
1082 set vfs.root.mountfrom="ufs:/dev/XXX"
1084 where XXX is the root slice of one of the disks that composed
1085 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1086 the array the same way you built it originally.
1089 The following binaries have been disconnected from the build:
1090 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1091 and mount_std. The functionality of these programs has been
1092 moved into the mount program. For example, to mount a devfs
1093 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1094 This does not affect entries in /etc/fstab, since entries in
1095 /etc/fstab are always processed with "mount -t fstype".
1098 Support for PCI Message Signalled Interrupts on i386 and amd64
1099 has been added to the kernel and various drivers will soon be
1100 updated to use MSI when it is available. If there are any problems,
1101 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1102 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1105 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1106 The lockmgr object layout has been changed as a result of having
1107 a lock_object embedded in it. As a consequence all file system
1108 kernel modules must be re-compiled. The mutex profiling man page
1109 has not yet been updated to reflect this change.
1112 KSE in the kernel has now been made optional and turned on by
1113 default. Use 'nooption KSE' in your kernel config to turn it
1114 off. All kernel modules *must* be recompiled after this change.
1115 There-after, modules from a KSE kernel should be compatible with
1116 modules from a NOKSE kernel due to the temporary padding fields
1117 added to 'struct proc'.
1120 mrouted and its utilities have been removed from the base system.
1123 Some ioctl(2) command codes have changed. Full backward ABI
1124 compatibility is provided if the "options COMPAT_FREEBSD6" is
1125 present in the kernel configuration file. Make sure to add
1126 this option to your kernel config file, or recompile X.Org
1127 and the rest of ports; otherwise they may refuse to work.
1130 tcpslice has been removed from the base system.
1133 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1134 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1135 systat needs to be rebuilt.
1138 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1141 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1142 for IPFIREWALL_FORWARD is now as it was before when it was first
1143 committed and for years after. The behaviour is now ON.
1146 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1147 Now it can decrypt files created from different architectures.
1148 Unfortunately, it is no longer able to decrypt a cipher text
1149 generated with an older version on 64 bit architectures.
1150 If you have such a file, you need old utility to decrypt it.
1153 The interface version of the i4b kernel part has changed. So
1154 after updating the kernel sources and compiling a new kernel,
1155 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1156 be rebuilt, and vice versa.
1159 The XBOX kernel now defaults to the nfe(4) driver instead of
1160 the nve(4) driver. Please update your configuration
1164 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1165 PCnet family of NICs has been removed. The new le(4) driver serves
1166 as an equivalent but cross-platform replacement with the pcn(4)
1167 driver still providing performance-optimized support for the subset
1168 of AMD Am79C971 PCnet-FAST and greater chips as before.
1171 The machdep.* sysctls and the adjkerntz utility have been
1172 modified a bit. The new adjkerntz utility uses the new
1173 sysctl names and sysctlbyname() calls, so it may be impossible
1174 to run an old /sbin/adjkerntz utility in single-user mode
1175 with a new kernel. Replace the `adjkerntz -i' step before
1176 `make installworld' with:
1178 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1180 and proceed as usual with the rest of the installworld-stage
1181 steps. Otherwise, you risk installing binaries with their
1182 timestamp set several hours in the future, especially if
1183 you are running with local time set to GMT+X hours.
1186 The ip6fw utility has been removed. The behavior provided by
1187 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1188 have been updated to deal with it. There are some rules that
1189 might not migrate cleanly. Use rc.firewall6 as a template to
1193 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1194 attachments have been removed. Make sure to configure scc(4)
1195 on sparc64. Note also that by default puc(4) will use uart(4)
1196 and not sio(4) for serial ports because interrupt handling has
1197 been optimized for multi-port serial cards and only uart(4)
1198 implements the interface to support it.
1201 The scc(4) driver replaces puc(4) for Serial Communications
1202 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1203 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1204 configuration to make sure that the serial ports remain
1208 Most world/kernel related NO_* build options changed names.
1209 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1210 after FreeBSD ports) and should be set in /etc/src.conf
1211 (the src.conf(5) manpage is provided). Full backwards
1212 compatibility is maintained for the time being though it's
1213 highly recommended to start moving old options out of the
1214 system-wide /etc/make.conf file into the new /etc/src.conf
1215 while also properly renaming them. More conversions will
1216 likely follow. Posting to current@:
1218 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1221 The NETSMBCRYPTO kernel option has been retired because its
1222 functionality is always included in NETSMB and smbfs.ko now.
1225 The TDFX_LINUX kernel option was retired and replaced by the
1226 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1227 kernel module. Loading it alone should suffice to get 3dfx support
1228 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1232 The 'audit' group was added to support the new auditing functionality
1233 in the base system. Be sure to follow the directions for updating,
1234 including the requirement to run mergemaster -p.
1237 The kernel ABI to file system modules was changed on i386.
1238 Please make sure that your kernel and modules are in sync.
1241 This actually occured some time ago, but installing the kernel
1242 now also installs a bunch of symbol files for the kernel modules.
1243 This increases the size of /boot/kernel to about 67Mbytes. You
1244 will need twice this if you will eventually back this up to kernel.old
1245 on your next install.
1246 If you have a shortage of room in your root partition, you should add
1247 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1248 to your /etc/make.conf.
1251 libc's malloc implementation has been replaced. This change has the
1252 potential to uncover application bugs that previously went unnoticed.
1253 See the malloc(3) manual page for more details.
1256 The generic netgraph(4) cookie has been changed. If you upgrade
1257 kernel passing this point, you also need to upgrade userland
1258 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1261 si(4)'s device files now contain the unit number.
1262 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1265 The kernel ABI was mostly destroyed due to a change in the size
1266 of struct lock_object which is nested in other structures such
1267 as mutexes which are nested in all sorts of other structures.
1268 Make sure your kernel and modules are in sync.
1271 The page coloring algorithm in the VM subsystem was converted
1272 from tuning with kernel options to autotuning. Please remove
1273 any PQ_* option except PQ_NOOPT from your kernel config.
1276 The net80211-related tools in the tools/tools/ath directory
1277 have been moved to tools/tools/net80211 and renamed with a
1278 "wlan" prefix. Scripts that use them should be adjusted
1282 Scripts in the local_startup directories (as defined in
1283 /etc/defaults/rc.conf) that have the new rc.d semantics will
1284 now be run as part of the base system rcorder. If there are
1285 errors or problems with one of these local scripts, it could
1286 cause boot problems. If you encounter such problems, boot in
1287 single user mode, remove that script from the */rc.d directory.
1288 Please report the problem to the port's maintainer, and the
1289 freebsd-ports@freebsd.org mailing list.
1292 The nodev mount option was deprecated in RELENG_6 (where it
1293 was a no-op), and is now unsupported. If you have nodev or dev listed
1294 in /etc/fstab, remove it, otherwise it will result in a mount error.
1297 ABI between ipfw(4) and ipfw(8) has been changed. You need
1298 to rebuild ipfw(8) when rebuilding kernel.
1301 rp(4)'s device files now contain the unit number.
1302 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1305 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1306 Its /etc/rc.conf.d configuration file has been `ppp' from
1307 the beginning, and hence there is no need to touch it.
1310 Now most modules get their build-time options from the kernel
1311 configuration file. A few modules still have fixed options
1312 due to their non-conformant implementation, but they will be
1313 corrected eventually. You may need to review the options of
1314 the modules in use, explicitly specify the non-default options
1315 in the kernel configuration file, and rebuild the kernel and
1319 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1320 to turn polling(4) on your interfaces.
1323 The old bridge(4) implementation was retired. The new
1324 if_bridge(4) serves as a full functional replacement.
1327 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1328 to conform to POSIX-2001. This change broke an ABI
1329 compatibility on 64 bit architecture. You have to recompile
1330 userland programs that use getaddrinfo(3) on 64 bit
1334 RELENG_6 branched here.
1337 The pccard_ifconfig rc.conf variable has been removed and a new
1338 variable, ifconfig_DEFAULT has been introduced. Unlike
1339 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1340 do not have ifconfig_ifn entries rather than just those in
1341 removable_interfaces.
1344 Some previous versions of PAM have permitted the use of
1345 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1346 to third party PAM modules in /usr/local/lib. A change has been
1347 made to require the use of absolute paths in order to avoid
1348 ambiguity and dependence on library path configuration, which may
1349 affect existing configurations.
1352 Major changes to network interface API. All drivers must be
1353 recompiled. Drivers not in the base system will need to be
1354 updated to the new APIs.
1357 Changes were made to kinfo_proc in sys/user.h. Please recompile
1358 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1359 will not behave correctly.
1361 The API and ABI for hwpmc(4) have changed with the addition
1362 of sampling support. Please recompile lib/libpmc(3) and
1363 usr.sbin/{pmcstat,pmccontrol}.
1366 The OpenBSD dhclient was imported in place of the ISC dhclient
1367 and the network interface configuration scripts were updated
1368 accordingly. If you use DHCP to configure your interfaces, you
1369 must now run devd. Also, DNS updating was lost so you will need
1370 to find a workaround if you use this feature.
1372 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1373 sure to run mergemaster -p (like you are supposed to do every time
1377 if_bridge was added to the tree. This has changed struct ifnet.
1378 Please recompile userland and all network related modules.
1381 The n_net of a struct netent was changed to an uint32_t, and
1382 1st argument of getnetbyaddr() was changed to an uint32_t, to
1383 conform to POSIX-2001. These changes broke an ABI
1384 compatibility on 64 bit architecture. With these changes,
1385 shlib major of libpcap was bumped. You have to recompile
1386 userland programs that use getnetbyaddr(3), getnetbyname(3),
1387 getnetent(3) and/or libpcap on 64 bit architecture.
1390 Kernel parsing of extra options on '#!' first lines of shell
1391 scripts has changed. Lines with multiple options likely will
1392 fail after this date. For full details, please see
1393 http://people.freebsd.org/~gad/Updating-20050528.txt
1396 The packet filter (pf) code has been updated to OpenBSD 3.7
1397 Please note the changed anchor syntax and the fact that
1398 authpf(8) now needs a mounted fdescfs(5) to function.
1401 The NO_MIXED_MODE kernel option has been removed from the i386
1402 amd64 platforms as its use has been superceded by the new local
1403 APIC timer code. Any kernel config files containing this option
1407 The on-disk format of LC_CTYPE files was changed to be machine
1408 independent. Please make sure NOT to use NO_CLEAN buildworld
1409 when crossing this point. Crossing this point also requires
1410 recompile or reinstall of all locale depended packages.
1413 The ifi_epoch member of struct if_data has been changed to
1414 contain the uptime at which the interface was created or the
1415 statistics zeroed rather then the wall clock time because
1416 wallclock time may go backwards. This should have no impact
1417 unless an snmp implementation is using this value (I know of
1418 none at this point.)
1421 The acpi_perf and acpi_throttle drivers are now part of the
1422 acpi(4) main module. They are no longer built separately.
1425 The layout of struct image_params has changed. You have to
1426 recompile all compatibility modules (linux, svr4, etc) for use
1427 with the new kernel.
1430 The p4tcc driver has been merged into cpufreq(4). This makes
1431 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1432 compile in "device cpufreq" to restore this functionality.
1435 The responsibility of recomputing the file system summary of
1436 a SoftUpdates-enabled dirty volume has been transferred to the
1437 background fsck. A rebuild of fsck(8) utility is recommended
1438 if you have updated the kernel.
1440 To get the old behavior (recompute file system summary at mount
1441 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1442 mounting the new volume.
1445 The cpufreq import is complete. As part of this, the sysctls for
1446 acpi(4) throttling have been removed. The power_profile script
1447 has been updated, so you can use performance/economy_cpu_freq in
1448 rc.conf(5) to set AC on/offline cpu frequencies.
1451 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1452 requires recompiling libnetgraph and userland netgraph utilities.
1455 Support for abbreviated forms of a number of ipfw options is
1456 now deprecated. Warnings are printed to stderr indicating the
1457 correct full form when a match occurs. Some abbreviations may
1458 be supported at a later date based on user feedback. To be
1459 considered for support, abbreviations must be in use prior to
1460 this commit and unlikely to be confused with current key words.
1463 By a popular demand, a lot of NOFOO options were renamed
1464 to NO_FOO (see bsd.compat.mk for a full list). The old
1465 spellings are still supported, but will cause annoying
1466 warnings on stderr. Make sure you upgrade properly (see
1467 the COMMON ITEMS: section later in this file).
1470 Auto-loading of ancillary wlan modules such as wlan_wep has
1471 been temporarily disabled; you need to statically configure
1472 the modules you need into your kernel or explicitly load them
1473 prior to use. Specifically, if you intend to use WEP encryption
1474 with an 802.11 device load/configure wlan_wep; if you want to
1475 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1476 and wlan_xauth as required.
1479 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1480 (``enable lqr''), older versions would revert to LCP ECHO mode on
1481 negotiation failure. Now, ``enable echo'' is required for this
1482 behaviour. The ppp version number has been bumped to 3.4.2 to
1486 The wlan support has been updated to split the crypto support
1487 into separate modules. For static WEP you must configure the
1488 wlan_wep module in your system or build and install the module
1489 in place where it can be loaded (the kernel will auto-load
1490 the module when a wep key is configured).
1493 The ath driver has been updated to split the tx rate control
1494 algorithm into a separate module. You need to include either
1495 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1498 Support for systems with an 80386 CPU has been removed. Please
1499 use FreeBSD 5.x or earlier on systems with an 80386.
1502 We have had a hack which would mount the root filesystem
1503 R/W if the device were named 'md*'. As part of the vnode
1504 work I'm doing I have had to remove this hack. People
1505 building systems which use preloaded MD root filesystems
1506 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1507 their /etc/rc scripts.
1510 FreeBSD 5.3 shipped here.
1513 The size of struct tcpcb has changed again due to the removal
1514 of RFC1644 T/TCP. You have to recompile userland programs that
1515 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1518 The size of struct tcpcb has changed. You have to recompile
1519 userland programs that read kmem for tcp sockets directly
1520 (netstat, sockstat, etc.)
1523 RELENG_5 branched here. For older entries, please see updating
1524 in the RELENG_5 branch.
1530 Avoid using make -j when upgrading. From time to time in the
1531 past there have been problems using -j with buildworld and/or
1532 installworld. This is especially true when upgrading between
1533 "distant" versions (eg one that cross a major release boundary
1534 or several minor releases, or when several months have passed
1535 on the -current branch).
1537 Sometimes, obscure build problems are the result of environment
1538 poisoning. This can happen because the make utility reads its
1539 environment when searching for values for global variables.
1540 To run your build attempts in an "environmental clean room",
1541 prefix all make commands with 'env -i '. See the env(1) manual
1542 page for more details.
1544 When upgrading from one major version to another it is generally
1545 best to upgrade to the latest code in the currently installed branch
1546 first, then do an upgrade to the new branch. This is the best-tested
1547 upgrade path, and has the highest probability of being successful.
1548 Please try this approach before reporting problems with a major
1553 If you are updating from a prior version of FreeBSD (even one just
1554 a few days old), you should follow this procedure. It is the most
1555 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1557 make kernel-toolchain
1558 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1559 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1561 To test a kernel once
1562 ---------------------
1563 If you just want to boot a kernel once (because you are not sure
1564 if it works, or if you want to boot a known bad kernel to provide
1565 debugging information) run
1566 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1567 nextboot -k testkernel
1569 To just build a kernel when you know that it won't mess you up
1570 --------------------------------------------------------------
1571 This assumes you are already running a 5.X system. Replace
1572 ${arch} with the architecture of your machine (e.g. "i386",
1573 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1575 cd src/sys/${arch}/conf
1576 config KERNEL_NAME_HERE
1577 cd ../compile/KERNEL_NAME_HERE
1582 If this fails, go to the "To build a kernel" section.
1584 To rebuild everything and install it on the current system.
1585 -----------------------------------------------------------
1586 # Note: sometimes if you are running current you gotta do more than
1587 # is listed here if you are upgrading from a really old current.
1589 <make sure you have good level 0 dumps>
1591 make kernel KERNCONF=YOUR_KERNEL_HERE
1593 <reboot in single user> [3]
1601 To cross-install current onto a separate partition
1602 --------------------------------------------------
1603 # In this approach we use a separate partition to hold
1604 # current's root, 'usr', and 'var' directories. A partition
1605 # holding "/", "/usr" and "/var" should be about 2GB in
1608 <make sure you have good level 0 dumps>
1611 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1612 <maybe newfs current's root partition>
1613 <mount current's root partition on directory ${CURRENT_ROOT}>
1614 make installworld DESTDIR=${CURRENT_ROOT}
1615 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1616 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1617 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1618 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1619 <reboot into current>
1620 <do a "native" rebuild/install as described in the previous section>
1621 <maybe install compatibility libraries from ports/misc/compat*>
1625 To upgrade in-place from 5.x-stable to current
1626 ----------------------------------------------
1627 <make sure you have good level 0 dumps>
1629 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1631 <reboot in single user> [3]
1638 Make sure that you've read the UPDATING file to understand the
1639 tweaks to various things you need. At this point in the life
1640 cycle of current, things change often and you are on your own
1641 to cope. The defaults can also change, so please read ALL of
1642 the UPDATING entries.
1644 Also, if you are tracking -current, you must be subscribed to
1645 freebsd-current@freebsd.org. Make sure that before you update
1646 your sources that you have read and understood all the recent
1647 messages there. If in doubt, please track -stable which has
1648 much fewer pitfalls.
1650 [1] If you have third party modules, such as vmware, you
1651 should disable them at this point so they don't crash your
1654 [3] From the bootblocks, boot -s, and then do
1659 adjkerntz -i # if CMOS is wall time
1660 Also, when doing a major release upgrade, it is required that
1661 you boot into single user mode to do the installworld.
1663 [4] Note: This step is non-optional. Failure to do this step
1664 can result in a significant reduction in the functionality of the
1665 system. Attempting to do it by hand is not recommended and those
1666 that pursue this avenue should read this file carefully, as well
1667 as the archives of freebsd-current and freebsd-hackers mailing lists
1668 for potential gotchas.
1670 [5] Usually this step is a noop. However, from time to time
1671 you may need to do this if you get unknown user in the following
1672 step. It never hurts to do it all the time. You may need to
1673 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1674 install) after the buildworld before this step if you last updated
1675 from current before 20020224 or from -stable before 20020408.
1677 [8] In order to have a kernel that can run the 4.x binaries
1678 needed to do an installworld, you must include the COMPAT_FREEBSD4
1679 option in your kernel. Failure to do so may leave you with a system
1680 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1681 is required to run the 5.x binaries on more recent kernels.
1683 Make sure that you merge any new devices from GENERIC since the
1684 last time you updated your kernel config file.
1686 [9] When checking out sources, you must include the -P flag to have
1687 cvs prune empty directories.
1689 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1690 "?=" instead of the "=" assignment operator, so that buildworld can
1691 override the CPUTYPE if it needs to.
1693 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1694 not on the command line, or in /etc/make.conf. buildworld will
1695 warn if it is improperly defined.
1698 This file contains a list, in reverse chronological order, of major
1699 breakages in tracking -current. Not all things will be listed here,
1700 and it only starts on October 16, 2004. Updating files can found in
1701 previous releases if your system is older than this.
1703 Copyright information:
1705 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1707 Redistribution, publication, translation and use, with or without
1708 modification, in full or in part, in any form or format of this
1709 document are permitted without further permission from the author.
1711 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1712 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1713 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1714 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1715 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1716 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1717 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1718 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1719 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1720 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1721 POSSIBILITY OF SUCH DAMAGE.
1723 If you find this document useful, and you want to, you may buy the
1726 Contact Warner Losh if you have any questions about your use of