1 Updating Information for FreeBSD current users
3 This file is maintained and copyrighted by M. Warner Losh
4 <imp@village.org>. See end of file for further details. For commonly
5 done items, please see the COMMON ITEMS: section later in the file.
7 Items affecting the ports and packages system can be found in
8 /usr/ports/UPDATING. Please read that file before running
11 NOTE TO PEOPLE WHO THINK THAT FreeBSD 8.x IS SLOW:
12 FreeBSD 8.x has many debugging features turned on, in
13 both the kernel and userland. These features attempt to detect
14 incorrect use of system primitives, and encourage loud failure
15 through extra sanity checking and fail stop semantics. They
16 also substantially impact system performance. If you want to
17 do performance measurement, benchmarking, and optimization,
18 you'll want to turn them off. This includes various WITNESS-
19 related kernel options, INVARIANTS, malloc debugging flags
20 in userland, and various verbose features in the kernel. Many
21 developers choose to disable these features on build machines
22 to maximize performance. (To disable malloc debugging, run
23 ln -s aj /etc/malloc.conf.)
26 The k8temp(4) driver has been renamed to amdtemp(4) since
27 support for K10 and K11 CPU families was added.
30 IGMPv3 and Source-Specific Multicast (SSM) have been merged
31 to the IPv4 stack. VIMAGE hooks are in but not yet used.
33 For kernel developers, the most important changes are that the
34 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
35 and this lock has been downgraded to a non-recursive mutex.
37 Transport protocols (UDP, Raw IP) are now responsible for filtering
38 inbound multicast traffic according to group membership and source
39 filters. The imo_multicast_filter() KPI exists for this purpose.
40 Transports which do not use multicast (SCTP, TCP) already reject
41 multicast by default. Forwarding and receive performance may improve
42 as a mutex acquisition is no longer needed in the ip_input()
43 low-level input path. in_addmulti() and in_delmulti() are shimmed
44 to new KPIs which exist to support SSM in-kernel.
46 For application developers, it is recommended that loopback of
47 multicast datagrams be disabled for best performance, as this
48 will still cause the lock to be taken for each looped-back
49 datagram transmission. The net.inet.ip.mcast.loop sysctl may
50 be tuned to 0 to disable loopback by default; it defaults to 1
51 to preserve the existing behaviour.
53 For systems administrators, to obtain best performance with
54 multicast reception and multiple groups, it is always recommended
55 that a card with a suitably precise hash filter is used. Hash
56 collisions will still result in the lock being taken within the
57 transport protocol input path to check group membership.
59 If deploying FreeBSD in an environment with IGMP snooping switches,
60 it is recommended that the net.inet.igmp.sendlocal sysctl remain
61 enabled; this forces 224.0.0.0/24 group membership to be announced
64 The size of 'struct igmpstat' has changed; netstat needs to be
65 recompiled to reflect this.
66 Bump __FreeBSD_version to 800070.
69 libusb20.so.1 is now installed as libusb.so.1 and the ports system
70 updated to use it. This requires a buildworld/installworld in order to
71 update the library and dependencies (usbconfig, etc). Its advisable to
72 rebuild all ports which uses libusb. More specific directions are given
73 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
74 libusb are no longer required and can be removed.
77 A workaround is committed to allow the creation of System V shared
78 memory segment of size > 2 GB on the 64-bit architectures.
79 Due to a limitation of the existing ABI, the shm_segsz member
80 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
81 wrong for large segments. Note that limits must be explicitely
82 raised to allow such segments to be created.
85 The layout of struct ifnet has changed, requiring a rebuild of all
86 network device driver modules.
89 The /dev handling for the new USB stack has changed, a
90 buildworld/installworld is required for libusb20.
93 The new USB2 stack has now been permanently moved in and all kernel and
94 module names reverted to their previous values (eg, usb, ehci, ohci,
95 ums, ...). The old usb stack can be compiled in by prefixing the name
96 with the letter 'o', the old usb modules have been removed.
97 Updating entry 20090216 for xorg and 20090215 for libmap may still
101 The rc.conf(5) option if_up_delay has been renamed to
102 defaultroute_delay to better reflect its purpose. If you have
103 customized this setting in /etc/rc.conf you need to update it to
107 xorg 7.4 wants to configure its input devices via hald which does not
108 yet work with USB2. If the keyboard/mouse does not work in xorg then
110 Option "AllowEmptyInput" "off"
111 to your ServerLayout section. This will cause X to use the configured
112 kbd and mouse sections from your xorg.conf.
115 The GENERIC kernels for all architectures now default to the new USB2
116 stack. No kernel config options or code have been removed so if a
117 problem arises please report it and optionally revert to the old USB
118 stack. If you are loading USB kernel modules or have a custom kernel
119 that includes GENERIC then ensure that usb names are also changed over,
120 eg uftdi -> usb2_serial_ftdi.
122 Older programs linked against the ports libusb 0.1 need to be
123 redirected to the new stack's libusb20. /etc/libmap.conf can
125 # Map old usb library to new one for usb2 stack
126 libusb-0.1.so.8 libusb20.so.1
129 The ichsmb(4) driver has been changed to require SMBus slave
130 addresses be left-justified (xxxxxxx0b) rather than right-justified.
131 All of the other SMBus controller drivers require left-justified
132 slave addresses, so this change makes all the drivers provide the
136 INET6 statistics (struct ip6stat) was updated.
137 netstat(1) needs to be recompiled.
140 NTFS has been removed from GENERIC kernel on amd64 to match
141 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
142 will load ntfs.ko module automatically when NTFS support is
143 actually needed, unless ntfs.ko is not installed or security
144 level prohibits loading kernel modules. If either is the case,
145 "options NTFS" has to be added into kernel config.
148 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
149 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
150 800061. User space tools that rely on the size of struct tcpcb in
151 tcp_var.h (e.g. sockstat) need to be recompiled.
154 ng_tty(4) module updated to match the new TTY subsystem.
155 Due to API change, user-level applications must be updated.
156 New API support added to mpd5 CVS and expected to be present
157 in next mpd5.3 release.
160 With __FreeBSD_version 800060 the makefs tool is part of
161 the base system (it was a port).
164 The afdata and ifnet locks have been changed from mutexes to
165 rwlocks, network modules will need to be re-compiled.
168 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
169 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
170 The new code reduced struct rtentry{} by 16 bytes on 32-bit
171 architecture and 40 bytes on 64-bit architecture. The userland
172 applications "arp" and "ndp" have been updated accordingly.
173 The output from "netstat -r" shows only routing entries and
174 none of the L2 information.
177 __FreeBSD_version 800057 marks the switchover from the
178 binary ath hal to source code. Users must add the line:
180 options AH_SUPPORT_AR5416
182 to their kernel config files when specifying:
186 The ath_hal module no longer exists; the code is now compiled
187 together with the driver in the ath module. It is now
188 possible to tailor chip support (i.e. reduce the set of chips
189 and thereby the code size); consult ath_hal(4) for details.
192 __FreeBSD_version 800054 adds memory barriers to
193 <machine/atomic.h>, new interfaces to ifnet to facilitate
194 multiple hardware transmit queues for cards that support
195 them, and a lock-less ring-buffer implementation to
196 enable drivers to more efficiently manage queueing of
200 A new version of ZFS (version 13) has been merged to -HEAD.
201 This version has zpool attribute "listsnapshots" off by
202 default, which means "zfs list" does not show snapshots,
203 and is the same as Solaris behavior.
206 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
209 The uhci, ohci, ehci and slhci USB Host controller drivers have
210 been put into separate modules. If you load the usb module
211 separately through loader.conf you will need to load the
212 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
213 controller add the following to loader.conf:
219 The ABI used by the PMC toolset has changed. Please keep
220 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
224 The TTY subsystem of the kernel has been replaced by a new
225 implementation, which provides better scalability and an
226 improved driver model. Most common drivers have been migrated to
227 the new TTY subsystem, while others have not. The following
228 drivers have not yet been ported to the new TTY layer:
231 cy, digi, rc, rp, sio
237 ng_h4, ng_tty, ppp, sl, snp
239 Adding these drivers to your kernel configuration file shall
240 cause compilation to fail.
243 ntpd has been upgraded to 4.2.4p5.
246 OpenSSH has been upgraded to 5.1p1.
248 For many years, FreeBSD's version of OpenSSH preferred DSA
249 over RSA for host and user authentication keys. With this
250 upgrade, we've switched to the vendor's default of RSA over
251 DSA. This may cause upgraded clients to warn about unknown
252 host keys even for previously known hosts. Users should
253 follow the usual procedure for verifying host keys before
254 accepting the RSA key.
256 This can be circumvented by setting the "HostKeyAlgorithms"
257 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
260 Please note that the sequence of keys offered for
261 authentication has been changed as well. You may want to
262 specify IdentityFile in a different order to revert this
266 The sio(4) driver has been removed from the i386 and amd64
267 kernel configuration files. This means uart(4) is now the
268 default serial port driver on those platforms as well.
270 To prevent collisions with the sio(4) driver, the uart(4) driver
271 uses different names for its device nodes. This means the
272 onboard serial port will now most likely be called "ttyu0"
273 instead of "ttyd0". You may need to reconfigure applications to
274 use the new device names.
276 When using the serial port as a boot console, be sure to update
277 /boot/device.hints and /etc/ttys before booting the new kernel.
278 If you forget to do so, you can still manually specify the hints
279 at the loader prompt:
281 set hint.uart.0.at="isa"
282 set hint.uart.0.port="0x3F8"
283 set hint.uart.0.flags="0x10"
284 set hint.uart.0.irq="4"
288 The gpt(8) utility has been removed. Use gpart(8) to partition
292 The version that Linuxulator emulates was changed from 2.4.2
293 to 2.6.16. If you experience any problems with Linux binaries
294 please try to set sysctl compat.linux.osrelease to 2.4.2 and
295 if it fixes the problem contact emulation mailing list.
298 ISDN4BSD (I4B) was removed from the src tree. You may need to
299 update a your kernel configuration and remove relevant entries.
302 I have checked in code to support multiple routing tables.
303 See the man pages setfib(1) and setfib(2).
304 This is a hopefully backwards compatible version,
305 but to make use of it you need to compile your kernel
306 with options ROUTETABLES=2 (or more up to 16).
309 The 802.11 wireless support was redone to enable multi-bss
310 operation on devices that are capable. The underlying device
311 is no longer used directly but instead wlanX devices are
312 cloned with ifconfig. This requires changes to rc.conf files.
314 ifconfig_ath0="WPA DHCP"
317 ifconfig_wlan0="WPA DHCP"
318 see rc.conf(5) for more details. In addition, mergemaster of
319 /etc/rc.d is highly recommended. Simultaneous update of userland
320 and kernel wouldn't hurt either.
322 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
323 modules were merged into the base wlan module. All references
324 to these modules (e.g. in kernel config files) must be removed.
327 psm(4) has gained write(2) support in native operation level.
328 Arbitrary commands can be written to /dev/psm%d and status can
329 be read back from it. Therefore, an application is responsible
330 for status validation and error recovery. It is a no-op in
331 other operation levels.
334 Support for KSE threading has been removed from the kernel. To
335 run legacy applications linked against KSE libmap.conf may
336 be used. The following libmap.conf may be used to ensure
337 compatibility with any prior release:
339 libpthread.so.1 libthr.so.1
340 libpthread.so.2 libthr.so.2
341 libkse.so.3 libthr.so.3
344 The layout of struct vmspace has changed. This affects libkvm
345 and any executables that link against libkvm and use the
346 kvm_getprocs() function. In particular, but not exclusively,
347 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
348 The effects are minimal, but it's advisable to upgrade world
352 The latest em driver no longer has support in it for the
353 82575 adapter, this is now moved to the igb driver. The
354 split was done to make new features that are incompatible
355 with older hardware easier to do.
358 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
359 likewise the kernel option is now GEOM_LINUX_LVM.
362 The default NFS mount mode has changed from UDP to TCP for
363 increased reliability. If you rely on (insecurely) NFS
364 mounting across a firewall you may need to update your
368 Belatedly note the addition of m_collapse for compacting
372 The fts(3) structures have been changed to use adequate
373 integer types for their members and so to be able to cope
374 with huge file trees. The old fts(3) ABI is preserved
375 through symbol versioning in libc, so third-party binaries
376 using fts(3) should still work, although they will not take
377 advantage of the extended types. At the same time, some
378 third-party software might fail to build after this change
379 due to unportable assumptions made in its source code about
380 fts(3) structure members. Such software should be fixed
381 by its vendor or, in the worst case, in the ports tree.
382 FreeBSD_version 800015 marks this change for the unlikely
383 case that a portable fix is impossible.
386 To upgrade to -current after this date, you must be running
387 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
388 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
391 The ADAPTIVE_GIANT kernel option has been retired because its
392 functionality is the default now.
395 The AT keyboard emulation of sunkbd(4) has been turned on
396 by default. In order to make the special symbols of the Sun
397 keyboards driven by sunkbd(4) work under X these now have
398 to be configured the same way as Sun USB keyboards driven
399 by ukbd(4) (which also does AT keyboard emulation), f.e.:
401 Option "XkbLayout" "us"
402 Option "XkbRules" "xorg"
403 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
406 It has been decided that it is desirable to provide ABI
407 backwards compatibility to the FreeBSD 4/5/6 versions of the
408 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
409 broken with the introduction of PCI domain support (see the
410 20070930 entry). Unfortunately, this required the ABI of
411 PCIOCGETCONF to be broken again in order to be able to
412 provide backwards compatibility to the old version of that
413 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
414 again. As for prominent ports this affects neither pciutils
415 nor xorg-server this time, the hal port needs to be rebuilt
419 The misnamed kthread_create() and friends have been renamed
420 to kproc_create() etc. Many of the callers already
422 I will return kthread_create() and friends in a while
423 with implementations that actually create threads, not procs.
424 Renaming corresponds with version 800002.
430 Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
431 WITHOUT_LIBTHR are set.
434 The PCI code has been made aware of PCI domains. This means that
435 the location strings as used by pciconf(8) etc are now in the
436 following format: pci<domain>:<bus>:<device>[:<function>]. It
437 also means that consumers of <sys/pciio.h> potentially need to
438 be recompiled; this includes the hal and xorg-server ports.
441 The caching daemon (cached) was renamed to nscd. nscd.conf
442 configuration file should be used instead of cached.conf and
443 nscd_enable, nscd_pidfile and nscd_flags options should be used
444 instead of cached_enable, cached_pidfile and cached_flags in
448 The getfacl(1) utility now prints owning user and group name
449 instead of owning uid and gid in the three line comment header.
450 This is the same behavior as getfacl(1) on Solaris and Linux.
453 The new IPsec code is now compiled in using the IPSEC option. The
454 IPSEC option now requires "device crypto" be defined in your kernel
455 configuration. The FAST_IPSEC kernel option is now deprecated.
458 The packet filter (pf) code has been updated to OpenBSD 4.1 Please
459 note the changed syntax - keep state is now on by default. Also
460 note the fact that ftp-proxy(8) has been changed from bottom up and
461 has been moved from libexec to usr/sbin. Changes in the ALTQ
462 handling also affect users of IPFW's ALTQ capabilities.
465 Remove KAME IPsec in favor of FAST_IPSEC, which is now the
466 only IPsec supported by FreeBSD. The new IPsec stack
467 supports both IPv4 and IPv6. The kernel option will change
468 after the code changes have settled in. For now the kernel
469 option IPSEC is deprecated and FAST_IPSEC is the only option, that
470 will change after some settling time.
473 The wicontrol(8) utility has been removed from the base system. wi(4)
474 cards should be configured using ifconfig(8), see the man page for more
478 The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
479 instead of the nve(4) driver. Please update your configuration
483 By default, /etc/rc.d/sendmail no longer rebuilds the aliases
484 database if it is missing or older than the aliases file. If
485 desired, set the new rc.conf option sendmail_rebuild_aliases
486 to "YES" to restore that functionality.
489 The IPv4 multicast socket code has been considerably modified, and
490 moved to the file sys/netinet/in_mcast.c. Initial support for the
491 RFC 3678 Source-Specific Multicast Socket API has been added to
492 the IPv4 network stack.
494 Strict multicast and broadcast reception is now the default for
495 UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
496 has now been removed.
498 The RFC 1724 hack for interface selection has been removed; the use
499 of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
500 been added to replace it. Consumers such as routed will soon be
501 updated to reflect this.
503 These changes affect users who are running routed(8) or rdisc(8)
504 from the FreeBSD base system on point-to-point or unnumbered
508 The net80211 layer has changed significantly and all wireless
509 drivers that depend on it need to be recompiled. Further these
510 changes require that any program that interacts with the wireless
511 support in the kernel be recompiled; this includes: ifconfig,
512 wpa_supplicant, hostapd, and wlanstats. Users must also, for
513 the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
514 if they use modules for wireless support. These modules implement
515 scanning support for station and ap modes, respectively. Failure
516 to load the appropriate module before marking a wireless interface
517 up will result in a message to the console and the device not
521 The pam_nologin(8) module ceases to provide an authentication
522 function and starts providing an account management function.
523 Consequent changes to /etc/pam.d should be brought in using
524 mergemaster(8). Third-party files in /usr/local/etc/pam.d may
525 need manual editing as follows. Locate this line (or similar):
527 auth required pam_nologin.so no_warn
529 and change it according to this example:
531 account required pam_nologin.so no_warn
533 That is, the first word needs to be changed from "auth" to
534 "account". The new line can be moved to the account section
535 within the file for clarity. Not updating pam.conf(5) files
536 will result in nologin(5) ignored by the respective services.
539 The ether_ioctl() function has been synchronized with ioctl(2)
540 and ifnet.if_ioctl. Due to that, the size of one of its arguments
541 has changed on 64-bit architectures. All kernel modules using
542 ether_ioctl() need to be rebuilt on such architectures.
545 Improved INCLUDE_CONFIG_FILE support has been introduced to the
546 config(8) utility. In order to take advantage of this new
547 functionality, you are expected to recompile and install
548 src/usr.sbin/config. If you don't rebuild config(8), and your
549 kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
550 build will be broken because of a missing "kernconfstring"
554 Symbol versioning is enabled by default. To disable it, use
555 option WITHOUT_SYMVER. It is not advisable to attempt to
556 disable symbol versioning once it is enabled; your installworld
557 will break because a symbol version-less libc will get installed
558 before the install tools. As a result, the old install tools,
559 which previously had symbol dependencies to FBSD_1.0, will fail
560 because the freshly installed libc will not have them.
562 The default threading library (providing "libpthread") has been
563 changed to libthr. If you wish to have libkse as your default,
564 use option DEFAULT_THREAD_LIB=libkse for the buildworld.
567 The ABI breakage in sendmail(8)'s libmilter has been repaired
568 so it is no longer necessary to recompile mail filters (aka,
569 milters). If you recompiled mail filters after the 20070408
570 note, it is not necessary to recompile them again.
573 The new trunk(4) driver has been renamed to lagg(4) as it better
574 reflects its purpose. ifconfig will need to be recompiled.
577 sendmail(8) has been updated to version 8.14.1. Mail filters
578 (aka, milters) compiled against the libmilter included in the
579 base operating system should be recompiled.
582 Firmwares for ipw(4) and iwi(4) are now included in the base tree.
583 In order to use them one must agree to the respective LICENSE in
584 share/doc/legal and define legal.intel_<name>.license_ack=1 via
585 loader.conf(5) or kenv(1). Make sure to deinstall the now
586 deprecated modules from the respective firmware ports.
589 The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
590 were removed from FreeBSD's libc. These originally came from INRIA
591 IPv6. Nothing in FreeBSD ever used them. They may be regarded as
592 deprecated in previous releases.
593 The AF_LINK support for getnameinfo(3) was merged from NetBSD to
594 replace it as a more portable (and re-entrant) API.
597 To support interrupt filtering a modification to the newbus API
598 has occurred, ABI was broken and __FreeBSD_version was bumped
599 to 700031. Please make sure that your kernel and modules are in
601 http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
604 The IPv6 multicast forwarding code may now be loaded into GENERIC
605 kernels by loading the ip_mroute.ko module. This is built into the
606 module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
607 set; see src.conf(5) for more information.
610 The output of netstat -r has changed. Without -n, we now only
611 print a "network name" without the prefix length if the network
612 address and mask exactly match a Class A/B/C network, and an entry
613 exists in the nsswitch "networks" map.
614 With -n, we print the full unabbreviated CIDR network prefix in
615 the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
616 This change is in preparation for changes such as equal-cost
617 multipath, and to more generally assist operational deployment
618 of FreeBSD as a modern IPv4 router.
621 PIM has been turned on by default in the IPv4 multicast
622 routing code. The kernel option 'PIM' has now been removed.
623 PIM is now built by default if option 'MROUTING' is specified.
624 It may now be loaded into GENERIC kernels by loading the
628 Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
629 has been removed. Its functionality may be achieved by explicitly
630 configuring gif(4) interfaces and using the 'phyint' keyword in
632 XORP does not support source-routed IPv4 multicast tunnels nor the
633 integrated IPIP tunneling, therefore it is not affected by this
634 change. The __FreeBSD_version macro has been bumped to 700030.
637 Support for PCI Message Signalled Interrupts has been
638 re-enabled in the bge driver, only for those chips which are
639 believed to support it properly. If there are any problems,
640 MSI can be disabled completely by setting the
641 'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
645 Support for PCI Message Signalled Interrupts has been
646 disabled again in the bge driver. Many revisions of the
647 hardware fail to support it properly. Support can be
648 re-enabled by removing the #define of BGE_DISABLE_MSI in
649 "src/sys/dev/bge/if_bge.c".
652 Support for PCI Message Signalled Interrupts has been added
653 to the bge driver. If there are any problems, MSI can be
654 disabled completely by setting the 'hw.pci.enable_msi' and
655 'hw.pci.enable_msix' tunables to 0 in the loader.
658 The removal of several facets of the experimental Threading
659 system from the kernel means that the proc and thread structures
660 have changed quite a bit. I suggest all kernel modules that might
661 reference these structures be recompiled.. Especially the
665 Sound infrastructure has been updated with various fixes and
666 improvements. Most of the changes are pretty much transparent,
667 with exceptions of followings:
668 1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
669 moved to their own dev sysctl nodes, for example:
670 hw.snd.pcm0.vchans -> dev.pcm.0.vchans
671 2) /dev/dspr%d.%d has been deprecated. Each channel now has its
672 own chardev in the form of "dsp%d.<function>%d", where <function>
673 is p = playback, r = record and v = virtual, respectively. Users
674 are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
675 This does not affect those who are using "/dev/dsp".
678 geom(4)'s gmirror(8) class metadata structure has been
679 rev'd from v3 to v4. If you update across this point and
680 your metadata is converted for you, you will not be easily
681 able to downgrade since the /boot/kernel.old/geom_mirror.ko
682 kernel module will be unable to read the v4 metadata. You
683 can resolve this by doing from the loader(8) prompt:
685 set vfs.root.mountfrom="ufs:/dev/XXX"
687 where XXX is the root slice of one of the disks that composed
688 the mirror (i.e.: /dev/ad0s1a). You can then rebuild
689 the array the same way you built it originally.
692 The following binaries have been disconnected from the build:
693 mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
694 and mount_std. The functionality of these programs has been
695 moved into the mount program. For example, to mount a devfs
696 filesystem, instead of using mount_devfs, use: "mount -t devfs".
697 This does not affect entries in /etc/fstab, since entries in
698 /etc/fstab are always processed with "mount -t fstype".
701 Support for PCI Message Signalled Interrupts on i386 and amd64
702 has been added to the kernel and various drivers will soon be
703 updated to use MSI when it is available. If there are any problems,
704 MSI can be disabled completely by setting the 'hw.pci.enable_msi'
705 and 'hw.pci.enable_msix' tunables to 0 in the loader.
708 The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
709 The lockmgr object layout has been changed as a result of having
710 a lock_object embedded in it. As a consequence all file system
711 kernel modules must be re-compiled. The mutex profiling man page
712 has not yet been updated to reflect this change.
715 KSE in the kernel has now been made optional and turned on by
716 default. Use 'nooption KSE' in your kernel config to turn it
717 off. All kernel modules *must* be recompiled after this change.
718 There-after, modules from a KSE kernel should be compatible with
719 modules from a NOKSE kernel due to the temporary padding fields
720 added to 'struct proc'.
723 mrouted and its utilities have been removed from the base system.
726 Some ioctl(2) command codes have changed. Full backward ABI
727 compatibility is provided if the "options COMPAT_FREEBSD6" is
728 present in the kernel configuration file. Make sure to add
729 this option to your kernel config file, or recompile X.Org
730 and the rest of ports; otherwise they may refuse to work.
733 tcpslice has been removed from the base system.
736 The sizes of struct tcpcb (and struct xtcpcb) have changed due to
737 the rewrite of TCP syncookies. Tools like netstat, sockstat, and
738 systat needs to be rebuilt.
741 libpcap updated to v0.9.4 and tcpdump to v3.9.4
744 The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
745 for IPFIREWALL_FORWARD is now as it was before when it was first
746 committed and for years after. The behaviour is now ON.
749 enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
750 Now it can decrypt files created from different architectures.
751 Unfortunately, it is no longer able to decrypt a cipher text
752 generated with an older version on 64 bit architectures.
753 If you have such a file, you need old utility to decrypt it.
756 The interface version of the i4b kernel part has changed. So
757 after updating the kernel sources and compiling a new kernel,
758 the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
759 be rebuilt, and vice versa.
762 The XBOX kernel now defaults to the nfe(4) driver instead of
763 the nve(4) driver. Please update your configuration
767 The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
768 PCnet family of NICs has been removed. The new le(4) driver serves
769 as an equivalent but cross-platform replacement with the pcn(4)
770 driver still providing performance-optimized support for the subset
771 of AMD Am79C971 PCnet-FAST and greater chips as before.
774 The machdep.* sysctls and the adjkerntz utility have been
775 modified a bit. The new adjkerntz utility uses the new
776 sysctl names and sysctlbyname() calls, so it may be impossible
777 to run an old /sbin/adjkerntz utility in single-user mode
778 with a new kernel. Replace the `adjkerntz -i' step before
779 `make installworld' with:
781 /usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
783 and proceed as usual with the rest of the installworld-stage
784 steps. Otherwise, you risk installing binaries with their
785 timestamp set several hours in the future, especially if
786 you are running with local time set to GMT+X hours.
789 The ip6fw utility has been removed. The behavior provided by
790 ip6fw has been in ipfw2 for a good while and the rc.d scripts
791 have been updated to deal with it. There are some rules that
792 might not migrate cleanly. Use rc.firewall6 as a template to
796 The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
797 attachments have been removed. Make sure to configure scc(4)
798 on sparc64. Note also that by default puc(4) will use uart(4)
799 and not sio(4) for serial ports because interrupt handling has
800 been optimized for multi-port serial cards and only uart(4)
801 implements the interface to support it.
804 The scc(4) driver replaces puc(4) for Serial Communications
805 Controllers (SCCs) like the Siemens SAB82532 and the Zilog
806 Z8530. On sparc64, it is advised to add scc(4) to the kernel
807 configuration to make sure that the serial ports remain
811 Most world/kernel related NO_* build options changed names.
812 New knobs have common prefixes WITHOUT_*/WITH_* (modelled
813 after FreeBSD ports) and should be set in /etc/src.conf
814 (the src.conf(5) manpage is provided). Full backwards
815 compatibility is maintained for the time being though it's
816 highly recommended to start moving old options out of the
817 system-wide /etc/make.conf file into the new /etc/src.conf
818 while also properly renaming them. More conversions will
819 likely follow. Posting to current@:
821 http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
824 The NETSMBCRYPTO kernel option has been retired because its
825 functionality is always included in NETSMB and smbfs.ko now.
828 The TDFX_LINUX kernel option was retired and replaced by the
829 tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
830 kernel module. Loading it alone should suffice to get 3dfx support
831 for Linux apps because it will pull in 3dfx.ko and linux.ko through
835 The 'audit' group was added to support the new auditing functionality
836 in the base system. Be sure to follow the directions for updating,
837 including the requirement to run mergemaster -p.
840 The kernel ABI to file system modules was changed on i386.
841 Please make sure that your kernel and modules are in sync.
844 This actually occured some time ago, but installing the kernel
845 now also installs a bunch of symbol files for the kernel modules.
846 This increases the size of /boot/kernel to about 67Mbytes. You
847 will need twice this if you will eventually back this up to kernel.old
848 on your next install.
849 If you have a shortage of room in your root partition, you should add
850 -DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
851 to your /etc/make.conf.
854 libc's malloc implementation has been replaced. This change has the
855 potential to uncover application bugs that previously went unnoticed.
856 See the malloc(3) manual page for more details.
859 The generic netgraph(4) cookie has been changed. If you upgrade
860 kernel passing this point, you also need to upgrade userland
861 and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
864 si(4)'s device files now contain the unit number.
865 Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
868 The kernel ABI was mostly destroyed due to a change in the size
869 of struct lock_object which is nested in other structures such
870 as mutexes which are nested in all sorts of other structures.
871 Make sure your kernel and modules are in sync.
874 The page coloring algorithm in the VM subsystem was converted
875 from tuning with kernel options to autotuning. Please remove
876 any PQ_* option except PQ_NOOPT from your kernel config.
879 The net80211-related tools in the tools/tools/ath directory
880 have been moved to tools/tools/net80211 and renamed with a
881 "wlan" prefix. Scripts that use them should be adjusted
885 Scripts in the local_startup directories (as defined in
886 /etc/defaults/rc.conf) that have the new rc.d semantics will
887 now be run as part of the base system rcorder. If there are
888 errors or problems with one of these local scripts, it could
889 cause boot problems. If you encounter such problems, boot in
890 single user mode, remove that script from the */rc.d directory.
891 Please report the problem to the port's maintainer, and the
892 freebsd-ports@freebsd.org mailing list.
895 The nodev mount option was deprecated in RELENG_6 (where it
896 was a no-op), and is now unsupported. If you have nodev or dev listed
897 in /etc/fstab, remove it, otherwise it will result in a mount error.
900 ABI between ipfw(4) and ipfw(8) has been changed. You need
901 to rebuild ipfw(8) when rebuilding kernel.
904 rp(4)'s device files now contain the unit number.
905 Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
908 /etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
909 Its /etc/rc.conf.d configuration file has been `ppp' from
910 the beginning, and hence there is no need to touch it.
913 Now most modules get their build-time options from the kernel
914 configuration file. A few modules still have fixed options
915 due to their non-conformant implementation, but they will be
916 corrected eventually. You may need to review the options of
917 the modules in use, explicitly specify the non-default options
918 in the kernel configuration file, and rebuild the kernel and
922 kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
923 to turn polling(4) on your interfaces.
926 The old bridge(4) implementation was retired. The new
927 if_bridge(4) serves as a full functional replacement.
930 The ai_addrlen of a struct addrinfo was changed to a socklen_t
931 to conform to POSIX-2001. This change broke an ABI
932 compatibility on 64 bit architecture. You have to recompile
933 userland programs that use getaddrinfo(3) on 64 bit
937 RELENG_6 branched here.
940 The pccard_ifconfig rc.conf variable has been removed and a new
941 variable, ifconfig_DEFAULT has been introduced. Unlike
942 pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
943 do not have ifconfig_ifn entries rather than just those in
944 removable_interfaces.
947 Some previous versions of PAM have permitted the use of
948 non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
949 to third party PAM modules in /usr/local/lib. A change has been
950 made to require the use of absolute paths in order to avoid
951 ambiguity and dependence on library path configuration, which may
952 affect existing configurations.
955 Major changes to network interface API. All drivers must be
956 recompiled. Drivers not in the base system will need to be
957 updated to the new APIs.
960 Changes were made to kinfo_proc in sys/user.h. Please recompile
961 userland, or commands like `fstat', `pkill', `ps', `top' and `w'
962 will not behave correctly.
964 The API and ABI for hwpmc(4) have changed with the addition
965 of sampling support. Please recompile lib/libpmc(3) and
966 usr.sbin/{pmcstat,pmccontrol}.
969 The OpenBSD dhclient was imported in place of the ISC dhclient
970 and the network interface configuration scripts were updated
971 accordingly. If you use DHCP to configure your interfaces, you
972 must now run devd. Also, DNS updating was lost so you will need
973 to find a workaround if you use this feature.
975 The '_dhcp' user was added to support the OpenBSD dhclient. Be
976 sure to run mergemaster -p (like you are supposed to do every time
980 if_bridge was added to the tree. This has changed struct ifnet.
981 Please recompile userland and all network related modules.
984 The n_net of a struct netent was changed to an uint32_t, and
985 1st argument of getnetbyaddr() was changed to an uint32_t, to
986 conform to POSIX-2001. These changes broke an ABI
987 compatibility on 64 bit architecture. With these changes,
988 shlib major of libpcap was bumped. You have to recompile
989 userland programs that use getnetbyaddr(3), getnetbyname(3),
990 getnetent(3) and/or libpcap on 64 bit architecture.
993 Kernel parsing of extra options on '#!' first lines of shell
994 scripts has changed. Lines with multiple options likely will
995 fail after this date. For full details, please see
996 http://people.freebsd.org/~gad/Updating-20050528.txt
999 The packet filter (pf) code has been updated to OpenBSD 3.7
1000 Please note the changed anchor syntax and the fact that
1001 authpf(8) now needs a mounted fdescfs(5) to function.
1004 The NO_MIXED_MODE kernel option has been removed from the i386
1005 amd64 platforms as its use has been superceded by the new local
1006 APIC timer code. Any kernel config files containing this option
1010 The on-disk format of LC_CTYPE files was changed to be machine
1011 independent. Please make sure NOT to use NO_CLEAN buildworld
1012 when crossing this point. Crossing this point also requires
1013 recompile or reinstall of all locale depended packages.
1016 The ifi_epoch member of struct if_data has been changed to
1017 contain the uptime at which the interface was created or the
1018 statistics zeroed rather then the wall clock time because
1019 wallclock time may go backwards. This should have no impact
1020 unless an snmp implementation is using this value (I know of
1021 none at this point.)
1024 The acpi_perf and acpi_throttle drivers are now part of the
1025 acpi(4) main module. They are no longer built separately.
1028 The layout of struct image_params has changed. You have to
1029 recompile all compatibility modules (linux, svr4, etc) for use
1030 with the new kernel.
1033 The p4tcc driver has been merged into cpufreq(4). This makes
1034 "options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
1035 compile in "device cpufreq" to restore this functionality.
1038 The responsibility of recomputing the file system summary of
1039 a SoftUpdates-enabled dirty volume has been transferred to the
1040 background fsck. A rebuild of fsck(8) utility is recommended
1041 if you have updated the kernel.
1043 To get the old behavior (recompute file system summary at mount
1044 time), you can set vfs.ffs.compute_summary_at_mount=1 before
1045 mounting the new volume.
1048 The cpufreq import is complete. As part of this, the sysctls for
1049 acpi(4) throttling have been removed. The power_profile script
1050 has been updated, so you can use performance/economy_cpu_freq in
1051 rc.conf(5) to set AC on/offline cpu frequencies.
1054 NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
1055 requires recompiling libnetgraph and userland netgraph utilities.
1058 Support for abbreviated forms of a number of ipfw options is
1059 now deprecated. Warnings are printed to stderr indicating the
1060 correct full form when a match occurs. Some abbreviations may
1061 be supported at a later date based on user feedback. To be
1062 considered for support, abbreviations must be in use prior to
1063 this commit and unlikely to be confused with current key words.
1066 By a popular demand, a lot of NOFOO options were renamed
1067 to NO_FOO (see bsd.compat.mk for a full list). The old
1068 spellings are still supported, but will cause annoying
1069 warnings on stderr. Make sure you upgrade properly (see
1070 the COMMON ITEMS: section later in this file).
1073 Auto-loading of ancillary wlan modules such as wlan_wep has
1074 been temporarily disabled; you need to statically configure
1075 the modules you need into your kernel or explicitly load them
1076 prior to use. Specifically, if you intend to use WEP encryption
1077 with an 802.11 device load/configure wlan_wep; if you want to
1078 use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
1079 and wlan_xauth as required.
1082 The behaviour of ppp(8) has changed slightly. If lqr is enabled
1083 (``enable lqr''), older versions would revert to LCP ECHO mode on
1084 negotiation failure. Now, ``enable echo'' is required for this
1085 behaviour. The ppp version number has been bumped to 3.4.2 to
1089 The wlan support has been updated to split the crypto support
1090 into separate modules. For static WEP you must configure the
1091 wlan_wep module in your system or build and install the module
1092 in place where it can be loaded (the kernel will auto-load
1093 the module when a wep key is configured).
1096 The ath driver has been updated to split the tx rate control
1097 algorithm into a separate module. You need to include either
1098 ath_rate_onoe or ath_rate_amrr when configuring the kernel.
1101 Support for systems with an 80386 CPU has been removed. Please
1102 use FreeBSD 5.x or earlier on systems with an 80386.
1105 We have had a hack which would mount the root filesystem
1106 R/W if the device were named 'md*'. As part of the vnode
1107 work I'm doing I have had to remove this hack. People
1108 building systems which use preloaded MD root filesystems
1109 may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
1110 their /etc/rc scripts.
1113 FreeBSD 5.3 shipped here.
1116 The size of struct tcpcb has changed again due to the removal
1117 of RFC1644 T/TCP. You have to recompile userland programs that
1118 read kmem for tcp sockets directly (netstat, sockstat, etc.)
1121 The size of struct tcpcb has changed. You have to recompile
1122 userland programs that read kmem for tcp sockets directly
1123 (netstat, sockstat, etc.)
1126 RELENG_5 branched here. For older entries, please see updating
1127 in the RELENG_5 branch.
1133 Avoid using make -j when upgrading. From time to time in the
1134 past there have been problems using -j with buildworld and/or
1135 installworld. This is especially true when upgrading between
1136 "distant" versions (eg one that cross a major release boundary
1137 or several minor releases, or when several months have passed
1138 on the -current branch).
1140 Sometimes, obscure build problems are the result of environment
1141 poisoning. This can happen because the make utility reads its
1142 environment when searching for values for global variables.
1143 To run your build attempts in an "environmental clean room",
1144 prefix all make commands with 'env -i '. See the env(1) manual
1145 page for more details.
1147 When upgrading from one major version to another it is generally
1148 best to upgrade to the latest code in the currently installed branch
1149 first, then do an upgrade to the new branch. This is the best-tested
1150 upgrade path, and has the highest probability of being successful.
1151 Please try this approach before reporting problems with a major
1156 If you are updating from a prior version of FreeBSD (even one just
1157 a few days old), you should follow this procedure. It is the most
1158 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1160 make kernel-toolchain
1161 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1162 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1164 To test a kernel once
1165 ---------------------
1166 If you just want to boot a kernel once (because you are not sure
1167 if it works, or if you want to boot a known bad kernel to provide
1168 debugging information) run
1169 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1170 nextboot -k testkernel
1172 To just build a kernel when you know that it won't mess you up
1173 --------------------------------------------------------------
1174 This assumes you are already running a 5.X system. Replace
1175 ${arch} with the architecture of your machine (e.g. "i386",
1176 "alpha", "amd64", "ia64", "pc98", "sparc64", etc).
1178 cd src/sys/${arch}/conf
1179 config KERNEL_NAME_HERE
1180 cd ../compile/KERNEL_NAME_HERE
1185 If this fails, go to the "To build a kernel" section.
1187 To rebuild everything and install it on the current system.
1188 -----------------------------------------------------------
1189 # Note: sometimes if you are running current you gotta do more than
1190 # is listed here if you are upgrading from a really old current.
1192 <make sure you have good level 0 dumps>
1194 make kernel KERNCONF=YOUR_KERNEL_HERE
1196 <reboot in single user> [3]
1204 To cross-install current onto a separate partition
1205 --------------------------------------------------
1206 # In this approach we use a separate partition to hold
1207 # current's root, 'usr', and 'var' directories. A partition
1208 # holding "/", "/usr" and "/var" should be about 2GB in
1211 <make sure you have good level 0 dumps>
1214 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1215 <maybe newfs current's root partition>
1216 <mount current's root partition on directory ${CURRENT_ROOT}>
1217 make installworld DESTDIR=${CURRENT_ROOT}
1218 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1219 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1220 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1221 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1222 <reboot into current>
1223 <do a "native" rebuild/install as described in the previous section>
1224 <maybe install compatibility libraries from ports/misc/compat*>
1228 To upgrade in-place from 5.x-stable to current
1229 ----------------------------------------------
1230 <make sure you have good level 0 dumps>
1232 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1234 <reboot in single user> [3]
1241 Make sure that you've read the UPDATING file to understand the
1242 tweaks to various things you need. At this point in the life
1243 cycle of current, things change often and you are on your own
1244 to cope. The defaults can also change, so please read ALL of
1245 the UPDATING entries.
1247 Also, if you are tracking -current, you must be subscribed to
1248 freebsd-current@freebsd.org. Make sure that before you update
1249 your sources that you have read and understood all the recent
1250 messages there. If in doubt, please track -stable which has
1251 much fewer pitfalls.
1253 [1] If you have third party modules, such as vmware, you
1254 should disable them at this point so they don't crash your
1257 [3] From the bootblocks, boot -s, and then do
1262 adjkerntz -i # if CMOS is wall time
1263 Also, when doing a major release upgrade, it is required that
1264 you boot into single user mode to do the installworld.
1266 [4] Note: This step is non-optional. Failure to do this step
1267 can result in a significant reduction in the functionality of the
1268 system. Attempting to do it by hand is not recommended and those
1269 that pursue this avenue should read this file carefully, as well
1270 as the archives of freebsd-current and freebsd-hackers mailing lists
1271 for potential gotchas.
1273 [5] Usually this step is a noop. However, from time to time
1274 you may need to do this if you get unknown user in the following
1275 step. It never hurts to do it all the time. You may need to
1276 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1277 install) after the buildworld before this step if you last updated
1278 from current before 20020224 or from -stable before 20020408.
1280 [8] In order to have a kernel that can run the 4.x binaries
1281 needed to do an installworld, you must include the COMPAT_FREEBSD4
1282 option in your kernel. Failure to do so may leave you with a system
1283 that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
1284 is required to run the 5.x binaries on more recent kernels.
1286 Make sure that you merge any new devices from GENERIC since the
1287 last time you updated your kernel config file.
1289 [9] When checking out sources, you must include the -P flag to have
1290 cvs prune empty directories.
1292 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1293 "?=" instead of the "=" assignment operator, so that buildworld can
1294 override the CPUTYPE if it needs to.
1296 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1297 not on the command line, or in /etc/make.conf. buildworld will
1298 warn if it is improperly defined.
1301 This file contains a list, in reverse chronological order, of major
1302 breakages in tracking -current. Not all things will be listed here,
1303 and it only starts on October 16, 2004. Updating files can found in
1304 previous releases if your system is older than this.
1306 Copyright information:
1308 Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
1310 Redistribution, publication, translation and use, with or without
1311 modification, in full or in part, in any form or format of this
1312 document are permitted without further permission from the author.
1314 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1315 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1316 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1317 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1318 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1319 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1320 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1321 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1322 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1323 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1324 POSSIBILITY OF SUCH DAMAGE.
1326 If you find this document useful, and you want to, you may buy the
1329 Contact Warner Losh if you have any questions about your use of