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 20120503: p7 FreeBSD-SA-12:01.openssl
19 Fix multiple OpenSSL vulnerabilities.
21 20120104: p6 FreeBSD-EN-12:01.freebsd-update
22 Extend the character set accepted by freebsd-update(8) in file
23 names in order to allow upgrades to FreeBSD 9.0-RELEASE.
25 20111223: p5 FreeBSD-SA-11:06.bind, FreeBSD-SA-11:07.chroot
26 FreeBSD-SA-11:08.telnetd, FreeBSD-SA-11:09.pam_ssh
28 Fix a problem whereby a corrupt DNS record can cause named to crash.
31 Add an API for alerting internal libc routines to the presence of
32 "unsafe" paths post-chroot, and use it in ftpd. [11:07]
34 Fix a buffer overflow in telnetd. [11:08]
36 Make pam_ssh ignore unpassphrased keys unless the "nullok" option is
39 Add sanity checking of service names in pam_start. [11:10]
41 20111004: p4 FreeBSD-SA-11:05.unix (revised)
42 Fix a bug in UNIX socket handling in the linux emulator which was
43 exposed by the security fix in FreeBSD-SA-11:05.unix.
45 20110928: p3 FreeBSD-SA-11:04.compress, FreeBSD-SA-11:05.unix
46 Fix handling of corrupt compress(1)ed data. [11:04]
48 Add missing length checks on unix socket addresses. [11:05]
50 20110528: p2 FreeBSD-SA-11:02.bind
51 Fix BIND remote DoS with large RRSIG RRsets and negative
54 20110420: p1 FreeBSD-SA-11:01.mountd
55 Fix CIDR parsing bug in mountd ACLs.
61 New version of minidump format for amd64 architecture was
62 introduced in r215872. To analyze vmcore files produced by
63 kernels at or after this version you will need updated userland,
64 libkvm actually, that is able to handle the new version.
67 A workaround for a fixed ld bug has been removed in kernel code,
68 so make sure that your system ld is built from sources after
69 revision 211583 from 2010-08-21 (r210245 from 2010-07-19 if
70 building stable/8 kernel on head, r211584 from 2010-08-21 for
71 stable/7). A symptom of incorrect ld version is
72 different addresses for set_pcpu section and __start_set_pcpu
73 symbol in kernel and/or modules.
76 A new version of ZFS (version 15) has been merged.
77 This version uses a python library for the following subcommands:
78 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
79 For full functionality of these commands the following port must
80 be installed: sysutils/py-zfs
86 The config(8) command has been updated to maintain compatibility
87 with config files from 8.0-RELEASE. You will need a new version
88 of config to build kernels (this version can be used from 8.0-RELEASE
89 forward). The buildworld target will generate it, so following
90 the instructions in this file for updating will work glitch-free.
91 Merely doing a make buildkernel without first doing a make buildworld
92 (or kernel-toolchain), or attempting to build a kernel using
93 traidtional methods will generate a config version warning, indicating
97 The rc.firewall and rc.firewall6 were unified, and
98 rc.firewall6 and rc.d/ip6fw were removed.
99 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
100 variables are obsoleted. Instead, the following new rc
101 variables are added to rc.d/ipfw:
103 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
104 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
105 firewall_simple_onet_ipv6
107 The meanings correspond to the relevant IPv4 variables.
110 COMPAT_IA32 has been added as an alias for COMPAT_FREEBSD32. A new
111 version of config(8) is required. The error message when you hit this
112 condition is confusing (COMPAT_FREEBSD32 duplicate option), when it
113 should really say "your config is too old to compile this new kernel."
116 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
117 to allow 32-bit compatibility on non-x86 platforms. All kernel
118 configurations on amd64 and ia64 platforms using these options must
119 be modified accordingly.
122 Introduce the kernel thread "deadlock resolver" (which can be enabled
123 via the DEADLKRES option, see NOTES for more details) and the
124 sleepq_type() function for sleepqueues.
130 802.11s D3.03 support was committed. This is incompatible with
131 the previous code, which was based on D3.0.
134 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
135 mount(8) and -a option for df(1) to see them.
138 Remove the option STOP_NMI. The default action is now to use NMI
139 only for KDB via the newly introduced function stop_cpus_hard()
140 and maintain stop_cpus() to just use a normal IPI_STOP on ia32
147 Bump the shared library version numbers for all libraries that
148 do not use symbol versioning as part of the 8.0-RELEASE cycle.
149 Bump __FreeBSD_version to 800105.
152 Due to changes in the implementation of virtual network stack
153 support, all network-related kernel modules must be recompiled.
154 As this change breaks the ABI, bump __FreeBSD_version to 800104.
157 The TOE interface to the TCP syncache has been modified to remove struct
158 tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
159 cxgb driver is the only TOE consumer affected by this change, and needs
160 to be recompiled along with the kernel. As this change breaks the ABI,
161 bump __FreeBSD_version to 800103.
164 Padding has been added to struct tcpcb, sackhint and tcpstat in
165 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
166 maintainig the ABI. However, this change breaks the ABI, so bump
167 __FreeBSD_version to 800102. User space tools that rely on the size of
168 any of these structs (e.g. sockstat) need to be recompiled.
171 The NFS_LEGACYRPC option has been removed along with the old
172 kernel RPC implementation that this option selected. Kernel
173 configurations may need to be adjusted.
176 The network interface device nodes at /dev/net/<interface> have
177 been removed. All ioctl operations can be performed the normal
178 way using routing sockets. The kqueue functionality can
179 generally be replaced with routing sockets.
182 The documentation from the FreeBSD Documentation Project
183 (Handbook, FAQ, etc.) is now installed via packages by
184 sysinstall(8) and under the /usr/local/share/doc/freebsd
185 directory instead of /usr/share/doc.
188 The ABI of various structures related to the SYSV IPC API have
189 been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
190 kernel options now all require COMPAT_FREEBSD7.
191 Bump __FreeBSD_version to 800100.
194 Layout of struct vnet has changed as routing related variables
195 were moved to their own Vimage module. Modules need to be
196 recompiled. Bump __FreeBSD_version to 800099.
199 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
200 and 1024 respectively. As long as no more than 16 groups per
201 process are used, no changes should be visible. When more
202 than 16 groups are used, old binaries may fail if they call
203 getgroups() or getgrouplist() with statically sized storage.
204 Recompiling will work around this, but applications should be
205 modified to use dynamically allocated storage for group arrays
206 as POSIX.1-2008 does not cap an implementation's number of
207 supported groups at NGROUPS_MAX+1 as previous versions did.
209 NFS and portalfs mounts may also be affected as the list of
210 groups is truncated to 16. Users of NFS who use more than 16
211 groups, should take care that negative group permissions are not
212 used on the exported file systems as they will not be reliable
213 unless a GSSAPI based authentication method is used.
216 The compiling option ADAPTIVE_LOCKMGRS has been introduced.
217 This option compiles in the support for adaptive spinning for lockmgrs
218 which want to enable it. The lockinit() function now accepts the
219 flag LK_ADAPTIVE in order to make the lock object subject to
220 adaptive spinning when both held in write and read mode.
223 The layout of the structure returned by IEEE80211_IOC_STA_INFO
224 has changed. User applications that use this ioctl need to be
228 The layout of struct thread has changed. Kernel and modules
232 The layout of structs ifnet, domain, protosw and vnet_net has
233 changed. Kernel modules need to be rebuilt.
234 Bump __FreeBSD_version to 800097.
237 window(1) has been removed from the base system. It can now be
238 installed from ports. The port is called misc/window.
241 The way we are storing and accessing `routing table' entries
242 has changed. Programs reading the FIB, like netstat, need to
246 A new netisr implementation has been added for FreeBSD 8. Network
247 file system modules, such as igmp, ipdivert, and others, should be
249 Bump __FreeBSD_version to 800096.
252 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
256 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
257 Bump __FreeBSD_version to 800094.
260 Add mnt_xflag field to 'struct mount'. File system modules
262 Bump __FreeBSD_version to 800093.
265 The compiling option ADAPTIVE_SX has been retired while it has been
266 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
267 The KPI for sx_init_flags() changes as accepting flags:
268 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
269 has been introduced in order to handle the reversed logic.
270 Bump __FreeBSD_version to 800092.
273 Add support for hierarchical jails. Remove global securelevel.
274 Bump __FreeBSD_version to 800091.
277 The layout of struct vnet_net has changed, therefore modules
279 Bump __FreeBSD_version to 800090.
282 The newly imported zic(8) produces a new format in the
283 output. Please run tzsetup(8) to install the newly created
284 data to /etc/localtime.
287 The sysctl tree for the usb stack has renamed from hw.usb2.* to
288 hw.usb.* and is now consistent again with previous releases.
291 802.11 monitor mode support was revised and driver api's
292 were changed. Drivers dependent on net80211 now support
293 DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
294 user-visible data structures were changed but applications
295 that use DLT_IEEE802_11 may require changes.
296 Bump __FreeBSD_version to 800088.
299 The layout of the following structs has changed: sysctl_oid,
300 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
301 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
302 panics may be experienced. World rebuild is required for
303 correctly checking networking state from userland.
304 Bump __FreeBSD_version to 800085.
307 MLDv2 and Source-Specific Multicast (SSM) have been merged
308 to the IPv6 stack. VIMAGE hooks are in but not yet used.
309 The implementation of SSM within FreeBSD's IPv6 stack closely
310 follows the IPv4 implementation.
312 For kernel developers:
314 * The most important changes are that the ip6_output() and
315 ip6_input() paths no longer take the IN6_MULTI_LOCK,
316 and this lock has been downgraded to a non-recursive mutex.
318 * As with the changes to the IPv4 stack to support SSM, filtering
319 of inbound multicast traffic must now be performed by transport
320 protocols within the IPv6 stack. This does not apply to TCP and
321 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
323 * The KPIs used by IPv6 multicast are similar to those used by
324 the IPv4 stack, with the following differences:
325 * im6o_mc_filter() is analogous to imo_multicast_filter().
326 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
327 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
328 * IN6_LOOKUP_MULTI() has been deprecated and removed.
329 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
330 for MLDv1 have an additional 'timer' argument which is used to
331 jitter the initial membership report for the solicited-node
332 multicast membership on-link.
333 * This is not strictly needed for MLDv2, which already jitters
334 its report transmissions. However, the 'timer' argument is
335 preserved in case MLDv1 is active on the interface.
337 * The KAME linked-list based IPv6 membership implementation has
338 been refactored to use a vector similar to that used by the IPv4
340 Code which maintains a list of its own multicast memberships
341 internally, e.g. carp, has been updated to reflect the new
344 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
345 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
346 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
347 implementation constraint which needs to be addressed in HEAD.
349 For application developers:
351 * The changes are broadly similar to those made for the IPv4
354 * The use of IPv4 and IPv6 multicast socket options on the same
355 socket, using mapped addresses, HAS NOT been tested or supported.
357 * There are a number of issues with the implementation of various
358 IPv6 multicast APIs which need to be resolved in the API surface
359 before the implementation is fully compatible with KAME userland
360 use, and these are mostly to do with interface index treatment.
362 * The literature available discusses the use of either the delta / ASM
363 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
364 using setsourcefilter(3)/getsourcefilter(3). For more information
365 please refer to RFC 3768, 'Socket Interface Extensions for
366 Multicast Source Filters'.
368 * Applications which use the published RFC 3678 APIs should be fine.
370 For systems administrators:
372 * The mtest(8) utility has been refactored to support IPv6, in
373 addition to IPv4. Interface addresses are no longer accepted
374 as arguments, their names must be used instead. The utility
375 will map the interface name to its first IPv4 address as
376 returned by getifaddrs(3).
378 * The ifmcstat(8) utility has also been updated to print the MLDv2
379 endpoint state and source filter lists via sysctl(3).
381 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
382 loopback of IPv6 multicast datagrams by default; it defaults to 1
383 to preserve the existing behaviour. Disabling multicast loopback is
384 recommended for optimal system performance.
386 * The IPv6 MROUTING code has been changed to examine this sysctl
387 instead of attempting to perform a group lookup before looping
388 back forwarded datagrams.
390 Bump __FreeBSD_version to 800084.
393 Implement low-level Bluetooth HCI API.
394 Bump __FreeBSD_version to 800083.
397 The layout of struct malloc_type, used by modules to register new
398 memory allocation types, has changed. Most modules will need to
399 be rebuilt or panics may be experienced.
400 Bump __FreeBSD_version to 800081.
403 Anticipate overflowing inp_flags - add inp_flags2.
404 This changes most offsets in inpcb, so checking v4 connection
405 state will require a world rebuild.
406 Bump __FreeBSD_version to 800080.
409 Add an llentry to struct route and struct route_in6. Modules
410 embedding a struct route will need to be recompiled.
411 Bump __FreeBSD_version to 800079.
414 The size of rt_metrics_lite and by extension rtentry has changed.
415 Networking administration apps will need to be recompiled.
416 The route command now supports show as an alias for get, weighting
417 of routes, sticky and nostick flags to alter the behavior of stateful
419 Bump __FreeBSD_version to 800078.
422 Do not use Giant for kbdmux(4) locking. This is wrong and
423 apparently causing more problems than it solves. This will
424 re-open the issue where interrupt handlers may race with
425 kbdmux(4) in polling mode. Typical symptoms include (but
426 not limited to) duplicated and/or missing characters when
427 low level console functions (such as gets) are used while
428 interrupts are enabled (for example geli password prompt,
429 mountroot prompt etc.). Disabling kbdmux(4) may help.
432 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
433 kernel modules referencing any of the above need to be recompiled.
434 Bump __FreeBSD_version to 800075.
437 GEOM_PART has become the default partition slicer for storage devices,
438 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
439 introduces some changes:
441 MSDOS/EBR: the devices created from MSDOS extended partition entries
442 (EBR) can be named differently than with GEOM_MBR and are now symlinks
443 to devices with offset-based names. fstabs may need to be modified.
445 BSD: the "geometry does not match label" warning is harmless in most
446 cases but it points to problems in file system misalignment with
447 disk geometry. The "c" partition is now implicit, covers the whole
448 top-level drive and cannot be (mis)used by users.
450 General: Kernel dumps are now not allowed to be written to devices
451 whose partition types indicate they are meant to be used for file
452 systems (or, in case of MSDOS partitions, as something else than
455 Most of these changes date approximately from 200812.
458 The uscanner(4) driver has been removed from the kernel. This follows
459 Linux removing theirs in 2.6 and making libusb the default interface
463 The multicast forwarding code has been cleaned up. netstat(1)
464 only relies on KVM now for printing bandwidth upcall meters.
465 The IPv4 and IPv6 modules are split into ip_mroute_mod and
466 ip6_mroute_mod respectively. The config(5) options for statically
467 compiling this code remain the same, i.e. 'options MROUTING'.
470 Support for the IFF_NEEDSGIANT network interface flag has been
471 removed, which means that non-MPSAFE network device drivers are no
472 longer supported. In particular, if_ar, if_sr, and network device
473 drivers from the old (legacy) USB stack can no longer be built or
477 POSIX.1 Native Language Support (NLS) has been enabled in libc and
478 a bunch of new language catalog files have also been added.
479 This means that some common libc messages are now localized and
480 they depend on the LC_MESSAGES environmental variable.
483 The k8temp(4) driver has been renamed to amdtemp(4) since
484 support for K10 and K11 CPU families was added.
487 IGMPv3 and Source-Specific Multicast (SSM) have been merged
488 to the IPv4 stack. VIMAGE hooks are in but not yet used.
490 For kernel developers, the most important changes are that the
491 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
492 and this lock has been downgraded to a non-recursive mutex.
494 Transport protocols (UDP, Raw IP) are now responsible for filtering
495 inbound multicast traffic according to group membership and source
496 filters. The imo_multicast_filter() KPI exists for this purpose.
497 Transports which do not use multicast (SCTP, TCP) already reject
498 multicast by default. Forwarding and receive performance may improve
499 as a mutex acquisition is no longer needed in the ip_input()
500 low-level input path. in_addmulti() and in_delmulti() are shimmed
501 to new KPIs which exist to support SSM in-kernel.
503 For application developers, it is recommended that loopback of
504 multicast datagrams be disabled for best performance, as this
505 will still cause the lock to be taken for each looped-back
506 datagram transmission. The net.inet.ip.mcast.loop sysctl may
507 be tuned to 0 to disable loopback by default; it defaults to 1
508 to preserve the existing behaviour.
510 For systems administrators, to obtain best performance with
511 multicast reception and multiple groups, it is always recommended
512 that a card with a suitably precise hash filter is used. Hash
513 collisions will still result in the lock being taken within the
514 transport protocol input path to check group membership.
516 If deploying FreeBSD in an environment with IGMP snooping switches,
517 it is recommended that the net.inet.igmp.sendlocal sysctl remain
518 enabled; this forces 224.0.0.0/24 group membership to be announced
521 The size of 'struct igmpstat' has changed; netstat needs to be
522 recompiled to reflect this.
523 Bump __FreeBSD_version to 800070.
526 libusb20.so.1 is now installed as libusb.so.1 and the ports system
527 updated to use it. This requires a buildworld/installworld in order to
528 update the library and dependencies (usbconfig, etc). Its advisable to
529 rebuild all ports which uses libusb. More specific directions are given
530 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
531 libusb are no longer required and can be removed.
534 A workaround is committed to allow the creation of System V shared
535 memory segment of size > 2 GB on the 64-bit architectures.
536 Due to a limitation of the existing ABI, the shm_segsz member
537 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
538 wrong for large segments. Note that limits must be explicitly
539 raised to allow such segments to be created.
542 The layout of struct ifnet has changed, requiring a rebuild of all
543 network device driver modules.
546 The /dev handling for the new USB stack has changed, a
547 buildworld/installworld is required for libusb20.
550 The new USB2 stack has now been permanently moved in and all kernel and
551 module names reverted to their previous values (eg, usb, ehci, ohci,
552 ums, ...). The old usb stack can be compiled in by prefixing the name
553 with the letter 'o', the old usb modules have been removed.
554 Updating entry 20090216 for xorg and 20090215 for libmap may still
558 The rc.conf(5) option if_up_delay has been renamed to
559 defaultroute_delay to better reflect its purpose. If you have
560 customized this setting in /etc/rc.conf you need to update it to
564 xorg 7.4 wants to configure its input devices via hald which does not
565 yet work with USB2. If the keyboard/mouse does not work in xorg then
567 Option "AllowEmptyInput" "off"
568 to your ServerLayout section. This will cause X to use the configured
569 kbd and mouse sections from your xorg.conf.
572 The GENERIC kernels for all architectures now default to the new USB2
573 stack. No kernel config options or code have been removed so if a
574 problem arises please report it and optionally revert to the old USB
575 stack. If you are loading USB kernel modules or have a custom kernel
576 that includes GENERIC then ensure that usb names are also changed over,
577 eg uftdi -> usb2_serial_ftdi.
579 Older programs linked against the ports libusb 0.1 need to be
580 redirected to the new stack's libusb20. /etc/libmap.conf can
582 # Map old usb library to new one for usb2 stack
583 libusb-0.1.so.8 libusb20.so.1
586 All USB ethernet devices now attach as interfaces under the name ueN
587 (eg. ue0). This is to provide a predictable name as vendors often
588 change usb chipsets in a product without notice.
591 The ichsmb(4) driver has been changed to require SMBus slave
592 addresses be left-justified (xxxxxxx0b) rather than right-justified.
593 All of the other SMBus controller drivers require left-justified
594 slave addresses, so this change makes all the drivers provide the
598 INET6 statistics (struct ip6stat) was updated.
599 netstat(1) needs to be recompiled.
602 NTFS has been removed from GENERIC kernel on amd64 to match
603 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
604 will load ntfs.ko module automatically when NTFS support is
605 actually needed, unless ntfs.ko is not installed or security
606 level prohibits loading kernel modules. If either is the case,
607 "options NTFS" has to be added into kernel config.
610 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
611 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
612 800061. User space tools that rely on the size of struct tcpcb in
613 tcp_var.h (e.g. sockstat) need to be recompiled.
616 ng_tty(4) module updated to match the new TTY subsystem.
617 Due to API change, user-level applications must be updated.
618 New API support added to mpd5 CVS and expected to be present
619 in next mpd5.3 release.
622 With __FreeBSD_version 800060 the makefs tool is part of
623 the base system (it was a port).
626 The afdata and ifnet locks have been changed from mutexes to
627 rwlocks, network modules will need to be re-compiled.
630 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
631 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
632 The new code reduced struct rtentry{} by 16 bytes on 32-bit
633 architecture and 40 bytes on 64-bit architecture. The userland
634 applications "arp" and "ndp" have been updated accordingly.
635 The output from "netstat -r" shows only routing entries and
636 none of the L2 information.
639 __FreeBSD_version 800057 marks the switchover from the
640 binary ath hal to source code. Users must add the line:
642 options AH_SUPPORT_AR5416
644 to their kernel config files when specifying:
648 The ath_hal module no longer exists; the code is now compiled
649 together with the driver in the ath module. It is now
650 possible to tailor chip support (i.e. reduce the set of chips
651 and thereby the code size); consult ath_hal(4) for details.
654 __FreeBSD_version 800054 adds memory barriers to
655 <machine/atomic.h>, new interfaces to ifnet to facilitate
656 multiple hardware transmit queues for cards that support
657 them, and a lock-less ring-buffer implementation to
658 enable drivers to more efficiently manage queueing of
662 A new version of ZFS (version 13) has been merged to -HEAD.
663 This version has zpool attribute "listsnapshots" off by
664 default, which means "zfs list" does not show snapshots,
665 and is the same as Solaris behavior.
668 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
671 The uhci, ohci, ehci and slhci USB Host controller drivers have
672 been put into separate modules. If you load the usb module
673 separately through loader.conf you will need to load the
674 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
675 controller add the following to loader.conf:
681 The ABI used by the PMC toolset has changed. Please keep
682 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
686 atapci kernel module now includes only generic PCI ATA
687 driver. AHCI driver moved to ataahci kernel module.
688 All vendor-specific code moved into separate kernel modules:
689 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
690 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
691 atamarvell, atamicron, atanational, atanetcell, atanvidia,
692 atapromise, ataserverworks, atasiliconimage, atasis, atavia
695 The TTY subsystem of the kernel has been replaced by a new
696 implementation, which provides better scalability and an
697 improved driver model. Most common drivers have been migrated to
698 the new TTY subsystem, while others have not. The following
699 drivers have not yet been ported to the new TTY layer:
702 cy, digi, rc, rp, sio
708 ng_h4, ng_tty, ppp, sl, snp
710 Adding these drivers to your kernel configuration file shall
711 cause compilation to fail.
714 ntpd has been upgraded to 4.2.4p5.
717 OpenSSH has been upgraded to 5.1p1.
719 For many years, FreeBSD's version of OpenSSH preferred DSA
720 over RSA for host and user authentication keys. With this
721 upgrade, we've switched to the vendor's default of RSA over
722 DSA. This may cause upgraded clients to warn about unknown
723 host keys even for previously known hosts. Users should
724 follow the usual procedure for verifying host keys before
725 accepting the RSA key.
727 This can be circumvented by setting the "HostKeyAlgorithms"
728 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
731 Please note that the sequence of keys offered for
732 authentication has been changed as well. You may want to
733 specify IdentityFile in a different order to revert this
737 The sio(4) driver has been removed from the i386 and amd64
738 kernel configuration files. This means uart(4) is now the
739 default serial port driver on those platforms as well.
741 To prevent collisions with the sio(4) driver, the uart(4) driver
742 uses different names for its device nodes. This means the
743 onboard serial port will now most likely be called "ttyu0"
744 instead of "ttyd0". You may need to reconfigure applications to
745 use the new device names.
747 When using the serial port as a boot console, be sure to update
748 /boot/device.hints and /etc/ttys before booting the new kernel.
749 If you forget to do so, you can still manually specify the hints
750 at the loader prompt:
752 set hint.uart.0.at="isa"
753 set hint.uart.0.port="0x3F8"
754 set hint.uart.0.flags="0x10"
755 set hint.uart.0.irq="4"
759 The gpt(8) utility has been removed. Use gpart(8) to partition
763 The version that Linuxulator emulates was changed from 2.4.2
764 to 2.6.16. If you experience any problems with Linux binaries
765 please try to set sysctl compat.linux.osrelease to 2.4.2 and
766 if it fixes the problem contact emulation mailing list.
769 ISDN4BSD (I4B) was removed from the src tree. You may need to
770 update a your kernel configuration and remove relevant entries.
773 I have checked in code to support multiple routing tables.
774 See the man pages setfib(1) and setfib(2).
775 This is a hopefully backwards compatible version,
776 but to make use of it you need to compile your kernel
777 with options ROUTETABLES=2 (or more up to 16).
780 The 802.11 wireless support was redone to enable multi-bss
781 operation on devices that are capable. The underlying device
782 is no longer used directly but instead wlanX devices are
783 cloned with ifconfig. This requires changes to rc.conf files.
785 ifconfig_ath0="WPA DHCP"
788 ifconfig_wlan0="WPA DHCP"
789 see rc.conf(5) for more details. In addition, mergemaster of
790 /etc/rc.d is highly recommended. Simultaneous update of userland
791 and kernel wouldn't hurt either.
793 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
794 modules were merged into the base wlan module. All references
795 to these modules (e.g. in kernel config files) must be removed.
798 psm(4) has gained write(2) support in native operation level.
799 Arbitrary commands can be written to /dev/psm%d and status can
800 be read back from it. Therefore, an application is responsible
801 for status validation and error recovery. It is a no-op in
802 other operation levels.
805 Support for KSE threading has been removed from the kernel. To
806 run legacy applications linked against KSE libmap.conf may
807 be used. The following libmap.conf may be used to ensure
808 compatibility with any prior release:
810 libpthread.so.1 libthr.so.1
811 libpthread.so.2 libthr.so.2
812 libkse.so.3 libthr.so.3
815 The layout of struct vmspace has changed. This affects libkvm
816 and any executables that link against libkvm and use the
817 kvm_getprocs() function. In particular, but not exclusively,
818 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
819 The effects are minimal, but it's advisable to upgrade world
823 The latest em driver no longer has support in it for the
824 82575 adapter, this is now moved to the igb driver. The
825 split was done to make new features that are incompatible
826 with older hardware easier to do.
829 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
830 likewise the kernel option is now GEOM_LINUX_LVM.
833 The default NFS mount mode has changed from UDP to TCP for
834 increased reliability. If you rely on (insecurely) NFS
835 mounting across a firewall you may need to update your
839 Belatedly note the addition of m_collapse for compacting
843 The fts(3) structures have been changed to use adequate
844 integer types for their members and so to be able to cope
845 with huge file trees. The old fts(3) ABI is preserved
846 through symbol versioning in libc, so third-party binaries
847 using fts(3) should still work, although they will not take
848 advantage of the extended types. At the same time, some
849 third-party software might fail to build after this change
850 due to unportable assumptions made in its source code about
851 fts(3) structure members. Such software should be fixed
852 by its vendor or, in the worst case, in the ports tree.
853 FreeBSD_version 800015 marks this change for the unlikely
854 case that a portable fix is impossible.
857 To upgrade to -current after this date, you must be running
858 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
859 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
862 The ADAPTIVE_GIANT kernel option has been retired because its
863 functionality is the default now.
866 The AT keyboard emulation of sunkbd(4) has been turned on
867 by default. In order to make the special symbols of the Sun
868 keyboards driven by sunkbd(4) work under X these now have
869 to be configured the same way as Sun USB keyboards driven
870 by ukbd(4) (which also does AT keyboard emulation), f.e.:
872 Option "XkbLayout" "us"
873 Option "XkbRules" "xorg"
874 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
877 It has been decided that it is desirable to provide ABI
878 backwards compatibility to the FreeBSD 4/5/6 versions of the
879 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
880 broken with the introduction of PCI domain support (see the
881 20070930 entry). Unfortunately, this required the ABI of
882 PCIOCGETCONF to be broken again in order to be able to
883 provide backwards compatibility to the old version of that
884 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
885 again. As for prominent ports this affects neither pciutils
886 nor xorg-server this time, the hal port needs to be rebuilt
890 The misnamed kthread_create() and friends have been renamed
891 to kproc_create() etc. Many of the callers already
893 I will return kthread_create() and friends in a while
894 with implementations that actually create threads, not procs.
895 Renaming corresponds with version 800002.
901 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
902 WITHOUT_LIBTHR are set.
905 The PCI code has been made aware of PCI domains. This means that
906 the location strings as used by pciconf(8) etc are now in the
907 following format: pci<domain>:<bus>:<device>[:<function>]. It
908 also means that consumers of <sys/pciio.h> potentially need to
909 be recompiled; this includes the hal and xorg-server ports.
912 The caching daemon (cached) was renamed to nscd. nscd.conf
913 configuration file should be used instead of cached.conf and
914 nscd_enable, nscd_pidfile and nscd_flags options should be used
915 instead of cached_enable, cached_pidfile and cached_flags in
919 The getfacl(1) utility now prints owning user and group name
920 instead of owning uid and gid in the three line comment header.
921 This is the same behavior as getfacl(1) on Solaris and Linux.
924 The new IPsec code is now compiled in using the IPSEC option. The
925 IPSEC option now requires "device crypto" be defined in your kernel
926 configuration. The FAST_IPSEC kernel option is now deprecated.
929 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
930 note the changed syntax - keep state is now on by default. Also
931 note the fact that ftp-proxy(8) has been changed from bottom up and
932 has been moved from libexec to usr/sbin. Changes in the ALTQ
933 handling also affect users of IPFW's ALTQ capabilities.
936 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
937 only IPsec supported by FreeBSD. The new IPsec stack
938 supports both IPv4 and IPv6. The kernel option will change
939 after the code changes have settled in. For now the kernel
940 option IPSEC is deprecated and FAST_IPSEC is the only option, that
941 will change after some settling time.
944 The wicontrol(8) utility has been removed from the base system. wi(4)
945 cards should be configured using ifconfig(8), see the man page for more
949 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
950 instead of the nve(4) driver. Please update your configuration
954 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
955 database if it is missing or older than the aliases file. If
956 desired, set the new rc.conf option sendmail_rebuild_aliases
957 to "YES" to restore that functionality.
960 The IPv4 multicast socket code has been considerably modified, and
961 moved to the file sys/netinet/in_mcast.c. Initial support for the
962 RFC 3678 Source-Specific Multicast Socket API has been added to
963 the IPv4 network stack.
965 Strict multicast and broadcast reception is now the default for
966 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
967 has now been removed.
969 The RFC 1724 hack for interface selection has been removed; the use
970 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
971 been added to replace it. Consumers such as routed will soon be
972 updated to reflect this.
974 These changes affect users who are running routed(8) or rdisc(8)
975 from the FreeBSD base system on point-to-point or unnumbered
979 The net80211 layer has changed significantly and all wireless
980 drivers that depend on it need to be recompiled. Further these
981 changes require that any program that interacts with the wireless
982 support in the kernel be recompiled; this includes: ifconfig,
983 wpa_supplicant, hostapd, and wlanstats. Users must also, for
984 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
985 if they use modules for wireless support. These modules implement
986 scanning support for station and ap modes, respectively. Failure
987 to load the appropriate module before marking a wireless interface
988 up will result in a message to the console and the device not
992 The pam_nologin(8) module ceases to provide an authentication
993 function and starts providing an account management function.
994 Consequent changes to /etc/pam.d should be brought in using
995 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
996 need manual editing as follows. Locate this line (or similar):
998 auth required pam_nologin.so no_warn
1000 and change it according to this example:
1002 account required pam_nologin.so no_warn
1004 That is, the first word needs to be changed from "auth" to
1005 "account". The new line can be moved to the account section
1006 within the file for clarity. Not updating pam.conf(5) files
1007 will result in nologin(5) ignored by the respective services.
1010 The ether_ioctl() function has been synchronized with ioctl(2)
1011 and ifnet.if_ioctl. Due to that, the size of one of its arguments
1012 has changed on 64-bit architectures. All kernel modules using
1013 ether_ioctl() need to be rebuilt on such architectures.
1016 Improved INCLUDE_CONFIG_FILE support has been introduced to the
1017 config(8) utility. In order to take advantage of this new
1018 functionality, you are expected to recompile and install
1019 src/usr.sbin/config. If you don't rebuild config(8), and your
1020 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
1021 build will be broken because of a missing "kernconfstring"
1025 Symbol versioning is enabled by default. To disable it, use
1026 option WITHOUT_SYMVER. It is not advisable to attempt to
1027 disable symbol versioning once it is enabled; your installworld
1028 will break because a symbol version-less libc will get installed
1029 before the install tools. As a result, the old install tools,
1030 which previously had symbol dependencies to FBSD_1.0, will fail
1031 because the freshly installed libc will not have them.
1033 The default threading library (providing "libpthread") has been
1034 changed to libthr. If you wish to have libkse as your default,
1035 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
1038 The ABI breakage in sendmail(8)'s libmilter has been repaired
1039 so it is no longer necessary to recompile mail filters (aka,
1040 milters). If you recompiled mail filters after the 20070408
1041 note, it is not necessary to recompile them again.
1044 The new trunk(4) driver has been renamed to lagg(4) as it better
1045 reflects its purpose. ifconfig will need to be recompiled.
1048 sendmail(8) has been updated to version 8.14.1. Mail filters
1049 (aka, milters) compiled against the libmilter included in the
1050 base operating system should be recompiled.
1053 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
1054 In order to use them one must agree to the respective LICENSE in
1055 share/doc/legal and define legal.intel_<name>.license_ack=1 via
1056 loader.conf(5) or kenv(1). Make sure to deinstall the now
1057 deprecated modules from the respective firmware ports.
1060 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
1061 were removed from FreeBSD's libc. These originally came from INRIA
1062 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
1063 deprecated in previous releases.
1064 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
1065 replace it as a more portable (and re-entrant) API.
1068 To support interrupt filtering a modification to the newbus API
1069 has occurred, ABI was broken and __FreeBSD_version was bumped
1070 to 700031. Please make sure that your kernel and modules are in
1071 sync. For more info:
1072 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
1075 The IPv6 multicast forwarding code may now be loaded into GENERIC
1076 kernels by loading the ip_mroute.ko module. This is built into the
1077 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
1078 set; see src.conf(5) for more information.
1081 The output of netstat -r has changed. Without -n, we now only
1082 print a "network name" without the prefix length if the network
1083 address and mask exactly match a Class A/B/C network, and an entry
1084 exists in the nsswitch "networks" map.
1085 With -n, we print the full unabbreviated CIDR network prefix in
1086 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
1087 This change is in preparation for changes such as equal-cost
1088 multipath, and to more generally assist operational deployment
1089 of FreeBSD as a modern IPv4 router.
1092 PIM has been turned on by default in the IPv4 multicast
1093 routing code. The kernel option 'PIM' has now been removed.
1094 PIM is now built by default if option 'MROUTING' is specified.
1095 It may now be loaded into GENERIC kernels by loading the
1096 ip_mroute.ko module.
1099 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
1100 has been removed. Its functionality may be achieved by explicitly
1101 configuring gif(4) interfaces and using the 'phyint' keyword in
1103 XORP does not support source-routed IPv4 multicast tunnels nor the
1104 integrated IPIP tunneling, therefore it is not affected by this
1105 change. The __FreeBSD_version macro has been bumped to 700030.
1108 Support for PCI Message Signalled Interrupts has been
1109 re-enabled in the bge driver, only for those chips which are
1110 believed to support it properly. If there are any problems,
1111 MSI can be disabled completely by setting the
1112 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
1116 Support for PCI Message Signalled Interrupts has been
1117 disabled again in the bge driver. Many revisions of the
1118 hardware fail to support it properly. Support can be
1119 re-enabled by removing the #define of BGE_DISABLE_MSI in
1120 "src/sys/dev/bge/if_bge.c".
1123 Support for PCI Message Signalled Interrupts has been added
1124 to the bge driver. If there are any problems, MSI can be
1125 disabled completely by setting the 'hw.pci.enable_msi' and
1126 'hw.pci.enable_msix' tunables to 0 in the loader.
1129 The removal of several facets of the experimental Threading
1130 system from the kernel means that the proc and thread structures
1131 have changed quite a bit. I suggest all kernel modules that might
1132 reference these structures be recompiled.. Especially the
1136 Sound infrastructure has been updated with various fixes and
1137 improvements. Most of the changes are pretty much transparent,
1138 with exceptions of followings:
1139 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
1140 moved to their own dev sysctl nodes, for example:
1141 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
1142 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
1143 own chardev in the form of "dsp%d.<function>%d", where <function>
1144 is p = playback, r = record and v = virtual, respectively. Users
1145 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
1146 This does not affect those who are using "/dev/dsp".
1149 geom(4)'s gmirror(8) class metadata structure has been
1150 rev'd from v3 to v4. If you update across this point and
1151 your metadata is converted for you, you will not be easily
1152 able to downgrade since the /boot/kernel.old/geom_mirror.ko
1153 kernel module will be unable to read the v4 metadata. You
1154 can resolve this by doing from the loader(8) prompt:
1156 set vfs.root.mountfrom="ufs:/dev/XXX"
1158 where XXX is the root slice of one of the disks that composed
1159 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
1160 the array the same way you built it originally.
1163 The following binaries have been disconnected from the build:
1164 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
1165 and mount_std. The functionality of these programs has been
1166 moved into the mount program. For example, to mount a devfs
1167 filesystem, instead of using mount_devfs, use: "mount -t devfs".
1168 This does not affect entries in /etc/fstab, since entries in
1169 /etc/fstab are always processed with "mount -t fstype".
1172 Support for PCI Message Signalled Interrupts on i386 and amd64
1173 has been added to the kernel and various drivers will soon be
1174 updated to use MSI when it is available. If there are any problems,
1175 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
1176 and 'hw.pci.enable_msix' tunables to 0 in the loader.
1179 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
1180 The lockmgr object layout has been changed as a result of having
1181 a lock_object embedded in it. As a consequence all file system
1182 kernel modules must be re-compiled. The mutex profiling man page
1183 has not yet been updated to reflect this change.
1186 KSE in the kernel has now been made optional and turned on by
1187 default. Use 'nooption KSE' in your kernel config to turn it
1188 off. All kernel modules *must* be recompiled after this change.
1189 There-after, modules from a KSE kernel should be compatible with
1190 modules from a NOKSE kernel due to the temporary padding fields
1191 added to 'struct proc'.
1194 mrouted and its utilities have been removed from the base system.
1197 Some ioctl(2) command codes have changed. Full backward ABI
1198 compatibility is provided if the "options COMPAT_FREEBSD6" is
1199 present in the kernel configuration file. Make sure to add
1200 this option to your kernel config file, or recompile X.Org
1201 and the rest of ports; otherwise they may refuse to work.
1204 tcpslice has been removed from the base system.
1207 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
1208 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
1209 systat needs to be rebuilt.
1212 libpcap updated to v0.9.4 and tcpdump to v3.9.4
1215 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
1216 for IPFIREWALL_FORWARD is now as it was before when it was first
1217 committed and for years after. The behaviour is now ON.
1220 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
1221 Now it can decrypt files created from different architectures.
1222 Unfortunately, it is no longer able to decrypt a cipher text
1223 generated with an older version on 64 bit architectures.
1224 If you have such a file, you need old utility to decrypt it.
1227 The interface version of the i4b kernel part has changed. So
1228 after updating the kernel sources and compiling a new kernel,
1229 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
1230 be rebuilt, and vice versa.
1233 The XBOX kernel now defaults to the nfe(4) driver instead of
1234 the nve(4) driver. Please update your configuration
1238 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
1239 PCnet family of NICs has been removed. The new le(4) driver serves
1240 as an equivalent but cross-platform replacement with the pcn(4)
1241 driver still providing performance-optimized support for the subset
1242 of AMD Am79C971 PCnet-FAST and greater chips as before.
1245 The machdep.* sysctls and the adjkerntz utility have been
1246 modified a bit. The new adjkerntz utility uses the new
1247 sysctl names and sysctlbyname() calls, so it may be impossible
1248 to run an old /sbin/adjkerntz utility in single-user mode
1249 with a new kernel. Replace the `adjkerntz -i' step before
1250 `make installworld' with:
1252 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
1254 and proceed as usual with the rest of the installworld-stage
1255 steps. Otherwise, you risk installing binaries with their
1256 timestamp set several hours in the future, especially if
1257 you are running with local time set to GMT+X hours.
1260 The ip6fw utility has been removed. The behavior provided by
1261 ip6fw has been in ipfw2 for a good while and the rc.d scripts
1262 have been updated to deal with it. There are some rules that
1263 might not migrate cleanly. Use rc.firewall6 as a template to
1267 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
1268 attachments have been removed. Make sure to configure scc(4)
1269 on sparc64. Note also that by default puc(4) will use uart(4)
1270 and not sio(4) for serial ports because interrupt handling has
1271 been optimized for multi-port serial cards and only uart(4)
1272 implements the interface to support it.
1275 The scc(4) driver replaces puc(4) for Serial Communications
1276 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
1277 Z8530. On sparc64, it is advised to add scc(4) to the kernel
1278 configuration to make sure that the serial ports remain
1282 Most world/kernel related NO_* build options changed names.
1283 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
1284 after FreeBSD ports) and should be set in /etc/src.conf
1285 (the src.conf(5) manpage is provided). Full backwards
1286 compatibility is maintained for the time being though it's
1287 highly recommended to start moving old options out of the
1288 system-wide /etc/make.conf file into the new /etc/src.conf
1289 while also properly renaming them. More conversions will
1290 likely follow. Posting to current@:
1292 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
1295 The NETSMBCRYPTO kernel option has been retired because its
1296 functionality is always included in NETSMB and smbfs.ko now.
1299 The TDFX_LINUX kernel option was retired and replaced by the
1300 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
1301 kernel module. Loading it alone should suffice to get 3dfx support
1302 for Linux apps because it will pull in 3dfx.ko and linux.ko through
1306 The 'audit' group was added to support the new auditing functionality
1307 in the base system. Be sure to follow the directions for updating,
1308 including the requirement to run mergemaster -p.
1311 The kernel ABI to file system modules was changed on i386.
1312 Please make sure that your kernel and modules are in sync.
1315 This actually occured some time ago, but installing the kernel
1316 now also installs a bunch of symbol files for the kernel modules.
1317 This increases the size of /boot/kernel to about 67Mbytes. You
1318 will need twice this if you will eventually back this up to kernel.old
1319 on your next install.
1320 If you have a shortage of room in your root partition, you should add
1321 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
1322 to your /etc/make.conf.
1325 libc's malloc implementation has been replaced. This change has the
1326 potential to uncover application bugs that previously went unnoticed.
1327 See the malloc(3) manual page for more details.
1330 The generic netgraph(4) cookie has been changed. If you upgrade
1331 kernel passing this point, you also need to upgrade userland
1332 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
1335 si(4)'s device files now contain the unit number.
1336 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
1339 The kernel ABI was mostly destroyed due to a change in the size
1340 of struct lock_object which is nested in other structures such
1341 as mutexes which are nested in all sorts of other structures.
1342 Make sure your kernel and modules are in sync.
1345 The page coloring algorithm in the VM subsystem was converted
1346 from tuning with kernel options to autotuning. Please remove
1347 any PQ_* option except PQ_NOOPT from your kernel config.
1350 The net80211-related tools in the tools/tools/ath directory
1351 have been moved to tools/tools/net80211 and renamed with a
1352 "wlan" prefix. Scripts that use them should be adjusted
1356 Scripts in the local_startup directories (as defined in
1357 /etc/defaults/rc.conf) that have the new rc.d semantics will
1358 now be run as part of the base system rcorder. If there are
1359 errors or problems with one of these local scripts, it could
1360 cause boot problems. If you encounter such problems, boot in
1361 single user mode, remove that script from the */rc.d directory.
1362 Please report the problem to the port's maintainer, and the
1363 freebsd-ports@freebsd.org mailing list.
1366 The nodev mount option was deprecated in RELENG_6 (where it
1367 was a no-op), and is now unsupported. If you have nodev or dev listed
1368 in /etc/fstab, remove it, otherwise it will result in a mount error.
1371 ABI between ipfw(4) and ipfw(8) has been changed. You need
1372 to rebuild ipfw(8) when rebuilding kernel.
1375 rp(4)'s device files now contain the unit number.
1376 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
1379 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
1380 Its /etc/rc.conf.d configuration file has been `ppp' from
1381 the beginning, and hence there is no need to touch it.
1384 Now most modules get their build-time options from the kernel
1385 configuration file. A few modules still have fixed options
1386 due to their non-conformant implementation, but they will be
1387 corrected eventually. You may need to review the options of
1388 the modules in use, explicitly specify the non-default options
1389 in the kernel configuration file, and rebuild the kernel and
1393 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
1394 to turn polling(4) on your interfaces.
1397 The old bridge(4) implementation was retired. The new
1398 if_bridge(4) serves as a full functional replacement.
1401 The ai_addrlen of a struct addrinfo was changed to a socklen_t
1402 to conform to POSIX-2001. This change broke an ABI
1403 compatibility on 64 bit architecture. You have to recompile
1404 userland programs that use getaddrinfo(3) on 64 bit
1408 RELENG_6 branched here.
1411 The pccard_ifconfig rc.conf variable has been removed and a new
1412 variable, ifconfig_DEFAULT has been introduced. Unlike
1413 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
1414 do not have ifconfig_ifn entries rather than just those in
1415 removable_interfaces.
1418 Some previous versions of PAM have permitted the use of
1419 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
1420 to third party PAM modules in /usr/local/lib. A change has been
1421 made to require the use of absolute paths in order to avoid
1422 ambiguity and dependence on library path configuration, which may
1423 affect existing configurations.
1426 Major changes to network interface API. All drivers must be
1427 recompiled. Drivers not in the base system will need to be
1428 updated to the new APIs.
1431 Changes were made to kinfo_proc in sys/user.h. Please recompile
1432 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
1433 will not behave correctly.
1435 The API and ABI for hwpmc(4) have changed with the addition
1436 of sampling support. Please recompile lib/libpmc(3) and
1437 usr.sbin/{pmcstat,pmccontrol}.
1440 The OpenBSD dhclient was imported in place of the ISC dhclient
1441 and the network interface configuration scripts were updated
1442 accordingly. If you use DHCP to configure your interfaces, you
1443 must now run devd. Also, DNS updating was lost so you will need
1444 to find a workaround if you use this feature.
1446 The '_dhcp' user was added to support the OpenBSD dhclient. Be
1447 sure to run mergemaster -p (like you are supposed to do every time
1451 if_bridge was added to the tree. This has changed struct ifnet.
1452 Please recompile userland and all network related modules.
1455 The n_net of a struct netent was changed to an uint32_t, and
1456 1st argument of getnetbyaddr() was changed to an uint32_t, to
1457 conform to POSIX-2001. These changes broke an ABI
1458 compatibility on 64 bit architecture. With these changes,
1459 shlib major of libpcap was bumped. You have to recompile
1460 userland programs that use getnetbyaddr(3), getnetbyname(3),
1461 getnetent(3) and/or libpcap on 64 bit architecture.
1464 Kernel parsing of extra options on '#!' first lines of shell
1465 scripts has changed. Lines with multiple options likely will
1466 fail after this date. For full details, please see
1467 http://people.freebsd.org/~gad/Updating-20050528.txt
1470 The packet filter (pf) code has been updated to OpenBSD 3.7
1471 Please note the changed anchor syntax and the fact that
1472 authpf(8) now needs a mounted fdescfs(5) to function.
1475 The NO_MIXED_MODE kernel option has been removed from the i386
1476 amd64 platforms as its use has been superceded by the new local
1477 APIC timer code. Any kernel config files containing this option
1481 The on-disk format of LC_CTYPE files was changed to be machine
1482 independent. Please make sure NOT to use NO_CLEAN buildworld
1483 when crossing this point. Crossing this point also requires
1484 recompile or reinstall of all locale depended packages.
1487 The ifi_epoch member of struct if_data has been changed to
1488 contain the uptime at which the interface was created or the
1489 statistics zeroed rather then the wall clock time because
1490 wallclock time may go backwards. This should have no impact
1491 unless an snmp implementation is using this value (I know of
1492 none at this point.)
1495 The acpi_perf and acpi_throttle drivers are now part of the
1496 acpi(4) main module. They are no longer built separately.
1499 The layout of struct image_params has changed. You have to
1500 recompile all compatibility modules (linux, svr4, etc) for use
1501 with the new kernel.
1504 The p4tcc driver has been merged into cpufreq(4). This makes
1505 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1506 compile in "device cpufreq" to restore this functionality.
1509 The responsibility of recomputing the file system summary of
1510 a SoftUpdates-enabled dirty volume has been transferred to the
1511 background fsck. A rebuild of fsck(8) utility is recommended
1512 if you have updated the kernel.
1514 To get the old behavior (recompute file system summary at mount
1515 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1516 mounting the new volume.
1519 The cpufreq import is complete. As part of this, the sysctls for
1520 acpi(4) throttling have been removed. The power_profile script
1521 has been updated, so you can use performance/economy_cpu_freq in
1522 rc.conf(5) to set AC on/offline cpu frequencies.
1525 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1526 requires recompiling libnetgraph and userland netgraph utilities.
1529 Support for abbreviated forms of a number of ipfw options is
1530 now deprecated. Warnings are printed to stderr indicating the
1531 correct full form when a match occurs. Some abbreviations may
1532 be supported at a later date based on user feedback. To be
1533 considered for support, abbreviations must be in use prior to
1534 this commit and unlikely to be confused with current key words.
1537 By a popular demand, a lot of NOFOO options were renamed
1538 to NO_FOO (see bsd.compat.mk for a full list). The old
1539 spellings are still supported, but will cause annoying
1540 warnings on stderr. Make sure you upgrade properly (see
1541 the COMMON ITEMS: section later in this file).
1544 Auto-loading of ancillary wlan modules such as wlan_wep has
1545 been temporarily disabled; you need to statically configure
1546 the modules you need into your kernel or explicitly load them
1547 prior to use. Specifically, if you intend to use WEP encryption
1548 with an 802.11 device load/configure wlan_wep; if you want to
1549 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1550 and wlan_xauth as required.
1553 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1554 (``enable lqr''), older versions would revert to LCP ECHO mode on
1555 negotiation failure. Now, ``enable echo'' is required for this
1556 behaviour. The ppp version number has been bumped to 3.4.2 to
1560 The wlan support has been updated to split the crypto support
1561 into separate modules. For static WEP you must configure the
1562 wlan_wep module in your system or build and install the module
1563 in place where it can be loaded (the kernel will auto-load
1564 the module when a wep key is configured).
1567 The ath driver has been updated to split the tx rate control
1568 algorithm into a separate module. You need to include either
1569 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1572 Support for systems with an 80386 CPU has been removed. Please
1573 use FreeBSD 5.x or earlier on systems with an 80386.
1576 We have had a hack which would mount the root filesystem
1577 R/W if the device were named 'md*'. As part of the vnode
1578 work I'm doing I have had to remove this hack. People
1579 building systems which use preloaded MD root filesystems
1580 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1581 their /etc/rc scripts.
1584 FreeBSD 5.3 shipped here.
1587 The size of struct tcpcb has changed again due to the removal
1588 of RFC1644 T/TCP. You have to recompile userland programs that
1589 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1592 The size of struct tcpcb has changed. You have to recompile
1593 userland programs that read kmem for tcp sockets directly
1594 (netstat, sockstat, etc.)
1597 RELENG_5 branched here. For older entries, please see updating
1598 in the RELENG_5 branch.
1604 Avoid using make -j when upgrading. From time to time in the
1605 past there have been problems using -j with buildworld and/or
1606 installworld. This is especially true when upgrading between
1607 "distant" versions (eg one that cross a major release boundary
1608 or several minor releases, or when several months have passed
1609 on the -current branch).
1611 Sometimes, obscure build problems are the result of environment
1612 poisoning. This can happen because the make utility reads its
1613 environment when searching for values for global variables.
1614 To run your build attempts in an "environmental clean room",
1615 prefix all make commands with 'env -i '. See the env(1) manual
1616 page for more details.
1618 When upgrading from one major version to another it is generally
1619 best to upgrade to the latest code in the currently installed branch
1620 first, then do an upgrade to the new branch. This is the best-tested
1621 upgrade path, and has the highest probability of being successful.
1622 Please try this approach before reporting problems with a major
1627 When upgrading the boot ZFS pool to a new version, always follow
1630 1.) recompile and reinstall the ZFS boot loader and boot block
1631 (this is part of "make buildworld" and "make installworld")
1633 2.) update the ZFS boot block on your boot drive
1635 The following example updates the ZFS boot block on the first
1636 partition (freebsd-boot) of a GPT partitioned drive ad0:
1637 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
1639 Non-boot pools do not need these updates.
1643 If you are updating from a prior version of FreeBSD (even one just
1644 a few days old), you should follow this procedure. It is the most
1645 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1647 make kernel-toolchain
1648 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1649 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1651 To test a kernel once
1652 ---------------------
1653 If you just want to boot a kernel once (because you are not sure
1654 if it works, or if you want to boot a known bad kernel to provide
1655 debugging information) run
1656 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1657 nextboot -k testkernel
1659 To just build a kernel when you know that it won't mess you up
1660 --------------------------------------------------------------
1661 This assumes you are already running a 5.X system. Replace
1662 ${arch} with the architecture of your machine (e.g. "i386",
1663 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1665 cd src/sys/${arch}/conf
1666 config KERNEL_NAME_HERE
1667 cd ../compile/KERNEL_NAME_HERE
1672 If this fails, go to the "To build a kernel" section.
1674 To rebuild everything and install it on the current system.
1675 -----------------------------------------------------------
1676 # Note: sometimes if you are running current you gotta do more than
1677 # is listed here if you are upgrading from a really old current.
1679 <make sure you have good level 0 dumps>
1681 make kernel KERNCONF=YOUR_KERNEL_HERE
1683 <reboot in single user> [3]
1691 To cross-install current onto a separate partition
1692 --------------------------------------------------
1693 # In this approach we use a separate partition to hold
1694 # current's root, 'usr', and 'var' directories. A partition
1695 # holding "/", "/usr" and "/var" should be about 2GB in
1698 <make sure you have good level 0 dumps>
1701 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1702 <maybe newfs current's root partition>
1703 <mount current's root partition on directory ${CURRENT_ROOT}>
1704 make installworld DESTDIR=${CURRENT_ROOT}
1705 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1706 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1707 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1708 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1709 <reboot into current>
1710 <do a "native" rebuild/install as described in the previous section>
1711 <maybe install compatibility libraries from ports/misc/compat*>
1715 To upgrade in-place from 5.x-stable to current
1716 ----------------------------------------------
1717 <make sure you have good level 0 dumps>
1719 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1721 <reboot in single user> [3]
1728 Make sure that you've read the UPDATING file to understand the
1729 tweaks to various things you need. At this point in the life
1730 cycle of current, things change often and you are on your own
1731 to cope. The defaults can also change, so please read ALL of
1732 the UPDATING entries.
1734 Also, if you are tracking -current, you must be subscribed to
1735 freebsd-current@freebsd.org. Make sure that before you update
1736 your sources that you have read and understood all the recent
1737 messages there. If in doubt, please track -stable which has
1738 much fewer pitfalls.
1740 [1] If you have third party modules, such as vmware, you
1741 should disable them at this point so they don't crash your
1744 [3] From the bootblocks, boot -s, and then do
1749 adjkerntz -i # if CMOS is wall time
1750 Also, when doing a major release upgrade, it is required that
1751 you boot into single user mode to do the installworld.
1753 [4] Note: This step is non-optional. Failure to do this step
1754 can result in a significant reduction in the functionality of the
1755 system. Attempting to do it by hand is not recommended and those
1756 that pursue this avenue should read this file carefully, as well
1757 as the archives of freebsd-current and freebsd-hackers mailing lists
1758 for potential gotchas.
1760 [5] Usually this step is a noop. However, from time to time
1761 you may need to do this if you get unknown user in the following
1762 step. It never hurts to do it all the time. You may need to
1763 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1764 install) after the buildworld before this step if you last updated
1765 from current before 20020224 or from -stable before 20020408.
1767 [8] In order to have a kernel that can run the 4.x binaries
1768 needed to do an installworld, you must include the COMPAT_FREEBSD4
1769 option in your kernel. Failure to do so may leave you with a system
1770 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1771 is required to run the 5.x binaries on more recent kernels.
1773 Make sure that you merge any new devices from GENERIC since the
1774 last time you updated your kernel config file.
1776 [9] When checking out sources, you must include the -P flag to have
1777 cvs prune empty directories.
1779 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1780 "?=" instead of the "=" assignment operator, so that buildworld can
1781 override the CPUTYPE if it needs to.
1783 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1784 not on the command line, or in /etc/make.conf. buildworld will
1785 warn if it is improperly defined.
1788 This file contains a list, in reverse chronological order, of major
1789 breakages in tracking -current. Not all things will be listed here,
1790 and it only starts on October 16, 2004. Updating files can found in
1791 previous releases if your system is older than this.
1793 Copyright information:
1795 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1797 Redistribution, publication, translation and use, with or without
1798 modification, in full or in part, in any form or format of this
1799 document are permitted without further permission from the author.
1801 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1802 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1803 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1804 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1805 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1806 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1807 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1808 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1809 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1810 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1811 POSSIBILITY OF SUCH DAMAGE.
1813 If you find this document useful, and you want to, you may buy the
1816 Contact Warner Losh if you have any questions about your use of