UPDATING revision 286902
1Updating Information for FreeBSD current users 2 3This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>. 4See end of file for further details. For commonly done items, please see the 5COMMON ITEMS: section later in the file. These instructions assume that you 6basically know what you are doing. If not, then please consult the FreeBSD 7handbook: 8 9 http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html 10 11Items affecting the ports and packages system can be found in 12/usr/ports/UPDATING. Please read that file before running portupgrade. 13 1420150818: p23 FreeBSD-SA-15:20.expat 15 16 Fix multiple integer overflows in expat (libbsdxml) XML parser. 17 [SA-15:20] 18 1920150805: p22 FreeBSD-SA-15:19.routed 20 21 Fix routed remote denial of service vulnerability. 22 2320150728: p21 FreeBSD-SA-15:15.tcp 24 FreeBSD-SA-15:16.openssh 25 FreeBSD-SA-15:17.bind 26 27 Fix resource exhaustion in TCP reassembly. [SA-15:15] 28 29 Fix OpenSSH multiple vulnerabilities. [SA-15:16] 30 31 Fix BIND remote denial of service vulnerability. [SA-15:17] 32 3320150721: p20 FreeBSD-SA-15:13.tcp 34 35 Fix resource exhaustion due to sessions stuck in LAST_ACK state. 36 [SA-15:13] 37 3820150707: p19 FreeBSD-SA-15:11.bind 39 Fix BIND resolver remote denial of service when validating. 40 4120150630: p18 FreeBSD-EN-15:08.sendmail [revised] 42 FreeBSD-EN-15:09.xlocale 43 44 Improvements to sendmail TLS/DH interoperability. [EN-15:08] 45 46 Fix inconsistency between locale and rune locale states. 47 [EN-15:09] 48 4920150618: p17 FreeBSD-EN-15:08.sendmail 50 Improvements to sendmail TLS/DH interoperability. [EN-15:08] 51 5220150612: p16 FreeBSD-SA-15:10.openssl 53 Fix multiple vulnerabilities in OpenSSL. [SA-15:10] 54 5520150609: p15 FreeBSD-EN-15:06.file 56 57 Updated base system file(1) to 5.22 to address multiple denial 58 of service issues. 59 6020150513: p14 FreeBSD-EN-15:04.freebsd-update 61 62 Fix bug with freebsd-update(8) that does not ensure the previous 63 upgrade was completed. [EN-15:04] 64 6520150407: p13 FreeBSD-SA-15:04.igmp [revised] 66 FreeBSD-SA-15:07.ntp 67 FreeBSD-SA-15:09.ipv6 68 69 Improved patch for SA-15:04.igmp. 70 71 Fix multiple vulnerabilities of ntp. [SA-15:07] 72 73 Fix Denial of Service with IPv6 Router Advertisements. [SA-15:09] 74 7520150320: p12 76 Fix patch for SA-15:06.openssl. 77 7820150319: p11 FreeBSD-SA-15:06.openssl 79 Fix multiple vulnerabilities in OpenSSL. [SA-15:06] 80 8120150225: p10 FreeBSD-SA-15:04.igmp 82 FreeBSD-SA-15:05.bind 83 FreeBSD-EN-15:01.vt 84 FreeBSD-EN-15:02.openssl 85 FreeBSD-EN-15:03.freebsd-update 86 87 Fix integer overflow in IGMP protocol. [SA-15:04] 88 89 Fix BIND remote denial of service vulnerability. [SA-15:05] 90 91 Fix vt(4) crash with improper ioctl parameters. [EN-15:01] 92 93 Updated base system OpenSSL to 0.9.8zd. [EN-15:02] 94 95 Fix freebsd-update libraries update ordering issue. [EN-15:03] 96 9720150127: p9 FreeBSD-SA-15:02.kmem 98 FreeBSD-SA-15:03.sctp 99 100 Fix SCTP SCTP_SS_VALUE kernel memory corruption and disclosure 101 vulnerability. [SA-15:02] 102 103 Fix SCTP stream reset vulnerability. [SA-15:03] 104 10520150114: p8 FreeBSD-SA-15:01.openssl 106 Fix multiple vulnerabilities in OpenSSL. [SA-15:01] 107 10820141223: p7 FreeBSD-SA-14:31.ntp 109 FreeBSD-EN-14:13.freebsd-update 110 111 Fix multiple vulnerabilities in NTP suite. [SA-14:31] 112 Fix directory deletion issue in freebsd-update. [EN-14:13] 113 11420141210: p6 FreeBSD-SA-14:28.file 115 FreeBSD-SA-14:29.bind 116 117 Fix multiple vulnerabilities in file(1) and libmagic(3). 118 [SA-14:28] 119 120 Fix BIND remote denial of service vulnerability. [SA-14:29] 121 12220141104: p5 FreeBSD-SA-14:25.setlogin 123 FreeBSD-SA-14:26.ftp 124 FreeBSD-EN-14:12.zfs 125 126 Fix kernel stack disclosure in setlogin(2) / getlogin(2). 127 [SA-14:25] 128 129 Fix remote command execution in ftp(1). [SA-14:26] 130 131 Fix NFSv4 and ZFS cache consistency issue. [EN-14:12] 132 13320141022: p4 FreeBSD-EN-14:10.tzdata 134 FreeBSD-EN-14:11.crypt 135 136 Time zone data file update. [EN-14:10] 137 138 Change crypt(3) default hashing algorithm back to DES. [EN-14:11] 139 14020141021: p3 FreeBSD-SA-14:20.rtsold 141 FreeBSD-SA-14:21.routed 142 FreeBSD-SA-14:22.namei 143 FreeBSD-SA-14:23.openssl 144 145 Fix rtsold(8) remote buffer overflow vulnerability. [SA-14:20] 146 147 Fix routed(8) remote denial of service vulnerability. [SA-14:21] 148 149 Fix memory leak in sandboxed namei lookup. [SA-14:22] 150 151 Fix OpenSSL multiple vulnerabilities. [SA-14:23] 152 15320140916: p2 FreeBSD-SA-14:19.tcp 154 Fix Denial of Service in TCP packet processing. [SA-14:19] 155 15620140909: p1 FreeBSD-SA-14:18.openssl 157 Fix OpenSSL multiple vulnerabilities. [SA-14:18] 158 15920140716: 160 9.3-RELEASE. 161 16220140608: 163 On i386 and amd64 systems, the onifconsole flag is now set by default 164 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled 165 as a login TTY if it is set in the bootloader as an active kernel 166 console. No changes in behavior should result otherwise. To revert to 167 the previous behavior, set ttyu0 to "off" in /etc/ttys. 168 16920140512: 170 Clang and llvm have been upgraded to 3.4.1 release. 171 17220140321: 173 Clang and llvm have been upgraded to 3.4 release. 174 17520140216: 176 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has 177 been deprecated and will not be part of FreeBSD 11.0 and later 178 releases. If you use this driver, please consider switching to 179 the nfe(4) driver instead. 180 18120131216: 182 The behavior of gss_pseudo_random() for the krb5 mechanism 183 has changed, for applications requesting a longer random string 184 than produced by the underlying enctype's pseudo-random() function. 185 In particular, the random string produced from a session key of 186 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 187 be different at the 17th octet and later, after this change. 188 The counter used in the PRF+ construction is now encoded as a 189 big-endian integer in accordance with RFC 4402. 190 __FreeBSD_version is bumped to 902505. 191 19220130930: 193 9.2-RELEASE. 194 19520130823: 196 Behavior of devfs rules path matching has been changed. 197 Pattern is now always matched against fully qualified devfs 198 path and slash characters must be explicitly matched by 199 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 200 subdirectories must be reviewed. 201 20220130705: 203 hastctl(8)'s `status' command output changed to terse one-liner format. 204 Scripts using this should switch to `list' command or be rewritten. 205 20620130618: 207 Fix a bug that allowed a tracing process (e.g. gdb) to write 208 to a memory-mapped file in the traced process's address space 209 even if neither the traced process nor the tracing process had 210 write access to that file. 211 21220130605: 213 Added ZFS TRIM support which is enabled by default. To disable 214 ZFS TRIM support set vfs.zfs.trim.enabled=0 in loader.conf. 215 216 Creating new ZFS pools and adding new devices to existing pools 217 first performs a full device level TRIM which can take a significant 218 amount of time. The sysctl vfs.zfs.vdev.trim_on_init can be set to 0 219 to disable this behaviour. 220 221 ZFS TRIM requires the underlying device support BIO_DELETE which 222 is currently provided by methods such as ATA TRIM and SCSI UNMAP 223 via CAM, which are typically supported by SSD's. 224 225 Stats for ZFS TRIM can be monitored by looking at the sysctl's 226 under kstat.zfs.misc.zio_trim. 227 22820130524: 229 `list' command has been added to hastctl(8). For now, it is full 230 equivalent of `status' command. 231 WARNING: in the near future the output of hastctl's status command 232 will change to more terse format. If you use `hastctl status' 233 for parsing in your scripts, switch to `hastctl list'. 234 23520130430: 236 The mergemaster command now uses the default MAKEOBJDIRPREFIX 237 rather than creating it's own in the temporary directory in 238 order allow access to bootstrapped versions of tools such as 239 install and mtree. When upgrading from version of FreeBSD where 240 the install command does not support -l, you will need to 241 install a new mergemaster command if mergemaster -p is required. 242 This can be accomplished with the command (cd src/usr.sbin/mergemaster 243 && make install). 244 245 Due to the use of the new -l option to install(1) during build 246 and install, you must take care not to directly set the INSTALL 247 make variable in your /etc/make.conf, /etc/src.conf, or on the 248 command line. If you wish to use the -C flag for all installs 249 you may be able to add INSTALL+=-C to /etc/make.conf or 250 /etc/src.conf. 251 25220130429: 253 Fix a bug that allows NFS clients to issue READDIR on files. 254 25520130315: 256 The install(1) option -M has changed meaning and now takes an 257 argument that is a file or path to append logs to. In the 258 unlikely event that -M was the last option on the command line 259 and the command line contained at least two files and a target 260 directory the first file will have logs appended to it. The -M 261 option served little practical purpose in the last decade so it's 262 used expected to be extremely rare. 263 26420130225: 265 A new compression method (lz4) has been merged to. Please refer to 266 zpool-features(7) for more information. 267 268 Please refer to the "ZFS notes" section of this file for information 269 on upgrading boot ZFS pools. 270 27120121224: 272 The VFS KBI was changed with the merge of several nullfs 273 optimizations and fixes. All filesystem modules must be 274 recompiled. 275 27620121218: 277 With the addition of auditdistd(8), a new auditdistd user is now 278 depended on during installworld. "mergemaster -p" can be used to add 279 the user prior to installworld, as documented in the handbook. 280 28120121205: 282 9.1-RELEASE. 283 28420121129: 285 A new version of ZFS (pool version 5000) has been merged to 9-STABLE. 286 Starting with this version the old system of ZFS pool versioning 287 is superseded by "feature flags". This concept enables forward 288 compatibility against certain future changes in functionality of ZFS 289 pools. The first two read-only compatible "feature flags" for ZFS 290 pools are "com.delphix:async_destroy" and "com.delphix:empty_bpobj". 291 For more information read the new zpool-features(7) manual page. 292 Please refer to the "ZFS notes" section of this file for information 293 on upgrading boot ZFS pools. 294 29520121114: 296 The commit introducing bsd.compiler.mk breaks the traditional 297 building of kernels before this point. Add -m ${SRC}/share/mk 298 (for the right value of SRC) to your command lines to work 299 around; update your useland to a point after this; or use the 300 buildkernel/installkernel top-level targets. See also 20120829. 301 30220121102: 303 The IPFIREWALL_FORWARD kernel option has been removed. Its 304 functionality now turned on by default. 305 30620120913: 307 The random(4) support for the VIA hardware random number 308 generator (`PADLOCK') is no longer enabled unconditionally. 309 Add the PADLOCK_RNG option in the custom kernel config if 310 needed. The GENERIC kernels on i386 and amd64 do include the 311 option, so the change only affects the custom kernel 312 configurations. 313 31420120829: 315 The amd64 kernel now uses xsetbv, xrstor instructions. To compile with 316 the traditional method, you must update your system with an installworld 317 before the kernel will build. The documented make buildkernel/installkernel 318 interfaces (coupled with fresh make kernel-toolchain) continue to work. 319 32020120727: 321 The sparc64 ZFS loader has been changed to no longer try to auto- 322 detect ZFS providers based on diskN aliases but now requires these 323 to be explicitly listed in the OFW boot-device environment variable. 324 32520120422: 326 Now unix domain sockets behave "as expected" on nullfs(5). Previously 327 nullfs(5) did not pass through all behaviours to the underlying layer, 328 as a result if we bound to a socket on the lower layer we could connect 329 only to the lower path; if we bound to the upper layer we could connect 330 only to the upper path. The new behavior is one can connect to both the 331 lower and the upper paths regardless what layer path one binds to. 332 33320120109: 334 The acpi_wmi(4) status device /dev/wmistat has been renamed to 335 /dev/wmistat0. 336 33720120106: 338 A new VOP_ADVISE() was added to support posix_fadvise(2). All 339 filesystem modules must be recompiled. 340 34120120106: 342 The interface of the VOP_VPTOCNP(9) changed, now the returned 343 vnode shall be referenced, previously it was required to be 344 only held. All in-tree filesystems are converted. 345 34620120106: 347 9.0-RELEASE. 348 34920111101: 350 The broken amd(4) driver has been replaced with esp(4) in the amd64, 351 i386 and pc98 GENERIC kernel configuration files. 352 35320110913: 354 This commit modifies vfs_register() so that it uses a hash 355 calculation to set vfc_typenum, which is enabled by default. 356 The first time a system is booted after this change, the 357 vfc_typenum values will change for all file systems. The 358 main effect of this is a change to the NFS server file handles 359 for file systems that use vfc_typenum in their fsid, such as ZFS. 360 It will, however, prevent vfc_typenum from changing when file 361 systems are loaded in a different order for subsequent reboots. 362 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 363 until you are ready to remount all NFS clients after a reboot. 364 36520110828: 366 Bump the shared library version numbers for libraries that 367 do not use symbol versioning, have changed the ABI compared 368 to stable/8 and which shared library version was not bumped. 369 Done as part of 9.0-RELEASE cycle. 370 37120110815: 372 During the merge of Capsicum features, the fget(9) KPI was modified. 373 This may require the rebuilding of out-of-tree device drivers -- 374 issues have been reported specifically with the nVidia device driver. 375 __FreeBSD_version is bumped to 900041. 376 377 Also, there is a period between 20110811 and 20110814 where the 378 special devices /dev/{stdin,stdout,stderr} did not work correctly. 379 Building world from a kernel during that window may not work. 380 38120110628: 382 The packet filter (pf) code has been updated to OpenBSD 4.5. 383 You need to update userland tools to be in sync with kernel. 384 This update breaks backward compatibility with earlier pfsync(4) 385 versions. Care must be taken when updating redundant firewall setups. 386 38720110608: 388 The following sysctls and tunables are retired on x86 platforms: 389 machdep.hlt_cpus 390 machdep.hlt_logical_cpus 391 The following sysctl is retired: 392 machdep.hyperthreading_allowed 393 The sysctls were supposed to provide a way to dynamically offline and 394 online selected CPUs on x86 platforms, but the implementation has not 395 been reliable especially with SCHED_ULE scheduler. 396 machdep.hyperthreading_allowed tunable is still available to ignore 397 hyperthreading CPUs at OS level. 398 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 399 where X is an APIC ID of a CPU. Be advised, though, that disabling 400 CPUs in non-uniform fashion will result in non-uniform topology and 401 may lead to sub-optimal system performance with SCHED_ULE, which is 402 a default scheduler. 403 40420110607: 405 cpumask_t type is retired and cpuset_t is used in order to describe 406 a mask of CPUs. 407 40820110531: 409 Changes to ifconfig(8) for dynamic address family detection mandate 410 that you are running a kernel of 20110525 or later. Make sure to 411 follow the update procedure to boot a new kernel before installing 412 world. 413 41420110513: 415 Support for sun4v architecture is officially dropped 416 41720110503: 418 Several KPI breaking changes have been committed to the mii(4) layer, 419 the PHY drivers and consequently some Ethernet drivers using mii(4). 420 This means that miibus.ko and the modules of the affected Ethernet 421 drivers need to be recompiled. 422 423 Note to kernel developers: Given that the OUI bit reversion problem 424 was fixed as part of these changes all mii(4) commits related to OUIs, 425 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 426 handling, no longer can be merged verbatim to stable/8 and previous 427 branches. 428 42920110430: 430 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 431 into their kernel configurations along with 'device pci'. 432 43320110427: 434 The default NFS client is now the new NFS client, so fstype "newnfs" 435 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 436 Although mounts via fstype "nfs" will usually work without userland 437 changes, it is recommended that the mount(8) and mount_nfs(8) 438 commands be rebuilt from sources and that a link to mount_nfs called 439 mount_oldnfs be created. The new client is compiled into the 440 kernel with "options NFSCL" and this is needed for diskless root 441 file systems. The GENERIC kernel configs have been changed to use 442 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 443 To use the regular/old client, you can "mount -t oldnfs ...". For 444 a diskless root file system, you must also include a line like: 445 446 vfs.root.mountfrom="oldnfs:" 447 448 in the boot/loader.conf on the root fs on the NFS server to make 449 a diskless root fs use the old client. 450 45120110424: 452 The GENERIC kernels for all architectures now default to the new 453 CAM-based ATA stack. It means that all legacy ATA drivers were 454 removed and replaced by respective CAM drivers. If you are using 455 ATA device names in /etc/fstab or other places, make sure to update 456 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 457 where 'Y's are the sequential numbers starting from zero for each type 458 in order of detection, unless configured otherwise with tunables, 459 see cam(4)). There will be symbolic links created in /dev/ to map 460 old adX devices to the respective adaY. They should provide basic 461 compatibility for file systems mounting in most cases, but they do 462 not support old user-level APIs and do not have respective providers 463 in GEOM. Consider using updated management tools with new device names. 464 465 It is possible to load devices ahci, ata, siis and mvs as modules, 466 but option ATA_CAM should remain in kernel configuration to make ata 467 module work as CAM driver supporting legacy ATA controllers. Device ata 468 still can be used in modular fashion (atacore + ...). Modules atadisk 469 and atapi* are not used and won't affect operation in ATA_CAM mode. 470 Note that to use CAM-based ATA kernel should include CAM devices 471 scbus, pass, da (or explicitly ada), cd and optionally others. All of 472 them are parts of the cam module. 473 474 ataraid(4) functionality is now supported by the RAID GEOM class. 475 To use it you can load geom_raid kernel module and use graid(8) tool 476 for management. Instead of /dev/arX device names, use /dev/raid/rX. 477 478 No kernel config options or code have been removed, so if a problem 479 arises, please report it and optionally revert to the old ATA stack. 480 In order to do it you can remove from the kernel config: 481 options ATA_CAM 482 device ahci 483 device mvs 484 device siis 485 , and instead add back: 486 device atadisk # ATA disk drives 487 device ataraid # ATA RAID drives 488 device atapicd # ATAPI CDROM drives 489 device atapifd # ATAPI floppy drives 490 device atapist # ATAPI tape drives 491 49220110423: 493 The default NFS server has been changed to the new server, which 494 was referred to as the experimental server. If you need to switch 495 back to the old NFS server, you must now put the "-o" option on 496 both the mountd and nfsd commands. This can be done using the 497 mountd_flags and nfs_server_flags rc.conf variables until an 498 update to the rc scripts is committed, which is coming soon. 499 50020110418: 501 The GNU Objective-C runtime library (libobjc), and other Objective-C 502 related components have been removed from the base system. If you 503 require an Objective-C library, please use one of the available ports. 504 50520110331: 506 ath(4) has been split into bus- and device- modules. if_ath contains 507 the HAL, the TX rate control and the network device code. if_ath_pci 508 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 509 contains the AHB glue. Users need to load both if_ath_pci and if_ath 510 in order to use ath on everything else. 511 512 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 513 need to load if_ath and if_ath_pci for ath(4) operation. 514 51520110314: 516 As part of the replacement of sysinstall, the process of building 517 release media has changed significantly. For details, please re-read 518 release(7), which has been updated to reflect the new build process. 519 52020110218: 521 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 522 is the last available version under GPLv2. It brings a number of new 523 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 524 4.1 and SSE 4.2), better support for powerpc64, a number of new 525 directives, and lots of other small improvements. See the ChangeLog 526 file in contrib/binutils for the full details. 527 52820110218: 529 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 530 compliant, and will now use half of hash for authentication. 531 This will break interoperability with all stacks (including all 532 actual FreeBSD versions) who implement 533 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 534 authentication). 535 The only workaround with such peers is to use another HMAC 536 algorithm for IPsec ("phase 2") authentication. 537 53820110207: 539 Remove the uio_yield prototype and symbol. This function has 540 been misnamed since it was introduced and should not be 541 globally exposed with this name. The equivalent functionality 542 is now available using kern_yield(curthread->td_user_pri). 543 The function remains undocumented. 544 54520110112: 546 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 547 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 548 for scalar sysctls is defined but disabled. Code that needs 549 UQUAD to pass the type checking that must compile on older 550 systems where the define is not present can check against 551 __FreeBSD_version >= 900030. 552 553 The system dialog(1) has been replaced with a new version previously 554 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 555 with the previous version, but the libdialog associated with it has 556 a largely incompatible API. As such, the original version of libdialog 557 will be kept temporarily as libodialog, until its base system consumers 558 are replaced or updated. Bump __FreeBSD_version to 900030. 559 56020110103: 561 If you are trying to run make universe on a -stable system, and you get 562 the following warning: 563 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 564 unknown. config(8) likely too old." 565 or something similar to it, then you must upgrade your -stable system 566 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 567 stable/8) or build the config from the latest stable/8 branch and 568 install it on your system. 569 570 Prior to this date, building a current universe on 8-stable system from 571 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 572 error in the first kernel build phase. A new config on those old 573 systems will fix that problem for older versions of -current. 574 57520101228: 576 The TCP stack has been modified to allow Khelp modules to interact with 577 it via helper hook points and store per-connection data in the TCP 578 control block. Bump __FreeBSD_version to 900029. User space tools that 579 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 580 be recompiled. 581 58220101114: 583 Generic IEEE 802.3 annex 31B full duplex flow control support has been 584 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 585 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 586 to take advantage of it instead of using custom implementations. This 587 means that these drivers now no longer unconditionally advertise 588 support for flow control but only do so if flow control is a selected 589 media option. This was implemented in the generic support that way in 590 order to allow flow control to be switched on and off via ifconfig(8) 591 with the PHY specific default to typically off in order to protect 592 from unwanted effects. Consequently, if you used flow control with 593 one of the above mentioned drivers you now need to explicitly enable 594 it, for example via: 595 ifconfig bge0 media auto mediaopt flowcontrol 596 597 Along with the above mentioned changes generic support for setting 598 1000baseT master mode also has been added and brgphy(4), ciphy(4), 599 e1000phy(4) as well as ip1000phy(4) have been converted to take 600 advantage of it. This means that these drivers now no longer take the 601 link0 parameter for selecting master mode but the master media option 602 has to be used instead, for example like in the following: 603 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 604 605 Selection of master mode now is also available with all other PHY 606 drivers supporting 1000baseT. 607 60820101111: 609 The TCP stack has received a significant update to add support for 610 modularised congestion control and generally improve the clarity of 611 congestion control decisions. Bump __FreeBSD_version to 900025. User 612 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 613 sockstat) need to be recompiled. 614 61520101002: 616 The man(1) utility has been replaced by a new version that no longer 617 uses /etc/manpath.config. Please consult man.conf(5) for how to 618 migrate local entries to the new format. 619 62020100928: 621 The copyright strings printed by login(1) and sshd(8) at the time of a 622 new connection have been removed to follow other operating systems and 623 upstream sshd. 624 62520100915: 626 A workaround for a fixed ld bug has been removed in kernel code, 627 so make sure that your system ld is built from sources after 628 revision 210245 from 2010-07-19 (r211583 if building head kernel 629 on stable/8, r211584 for stable/7; both from 2010-08-21). 630 A symptom of incorrect ld version is different addresses for 631 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 632 63320100913: 634 The $ipv6_prefer variable in rc.conf(5) has been split into 635 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 636 637 The $ip6addrctl_policy is a variable to choose a pre-defined 638 address selection policy set by ip6addrctl(8). A value 639 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 640 default is "AUTO". 641 642 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 643 flag (see an entry of 20090926) is set on an interface with no 644 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 645 security reason. If you want IPv6 link-local address on all 646 interfaces by default, set this to "YES". 647 648 The old ipv6_prefer="YES" is equivalent to 649 ipv6_activate_all_interfaces="YES" and 650 ip6addrctl_policy="ipv6_prefer". 651 65220100913: 653 DTrace has grown support for userland tracing. Due to this, DTrace is 654 now i386 and amd64 only. 655 dtruss(1) is now installed by default on those systems and a new 656 kernel module is needed for userland tracing: fasttrap. 657 No changes to your kernel config file are necessary to enable 658 userland tracing, but you might consider adding 'STRIP=' and 659 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 660 to have informative userland stack traces in DTrace (ustack). 661 66220100725: 663 The acpi_aiboost(4) driver has been removed in favor of the new 664 aibs(4) driver. You should update your kernel configuration file. 665 66620100722: 667 BSD grep has been imported to the base system and it is built by 668 default. It is completely BSD licensed, highly GNU-compatible, uses 669 less memory than its GNU counterpart and has a small codebase. 670 However, it is slower than its GNU counterpart, which is mostly 671 noticeable for larger searches, for smaller ones it is measurable 672 but not significant. The reason is complex, the most important factor 673 is that we lack a modern and efficient regex library and GNU 674 overcomes this by optimizing the searches internally. Future work 675 on improving the regex performance is planned, for the meantime, 676 users that need better performance, can build GNU grep instead by 677 setting the WITH_GNU_GREP knob. 678 67920100713: 680 Due to the import of powerpc64 support, all existing powerpc kernel 681 configuration files must be updated with a machine directive like this: 682 machine powerpc powerpc 683 684 In addition, an updated config(8) is required to build powerpc kernels 685 after this change. 686 68720100713: 688 A new version of ZFS (version 15) has been merged to -HEAD. 689 This version uses a python library for the following subcommands: 690 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 691 For full functionality of these commands the following port must 692 be installed: sysutils/py-zfs 693 69420100429: 695 'vm_page's are now hashed by physical address to an array of mutexes. 696 Currently this is only used to serialize access to hold_count. Over 697 time the page queue mutex will be peeled away. This changes the size 698 of pmap on every architecture. And requires all callers of vm_page_hold 699 and vm_page_unhold to be updated. 700 70120100402: 702 WITH_CTF can now be specified in src.conf (not recommended, there 703 are some problems with static executables), make.conf (would also 704 affect ports which do not use GNU make and do not override the 705 compile targets) or in the kernel config (via "makeoptions 706 WITH_CTF=yes"). 707 When WITH_CTF was specified there before this was silently ignored, 708 so make sure that WITH_CTF is not used in places which could lead 709 to unwanted behavior. 710 71120100311: 712 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 713 to allow 32-bit compatibility on non-x86 platforms. All kernel 714 configurations on amd64 and ia64 platforms using these options must 715 be modified accordingly. 716 71720100113: 718 The utmp user accounting database has been replaced with utmpx, 719 the user accounting interface standardized by POSIX. 720 Unfortunately the semantics of utmp and utmpx don't match, 721 making it practically impossible to support both interfaces. 722 The user accounting database is used by tools like finger(1), 723 last(1), talk(1), w(1) and ac(8). 724 725 All applications in the base system use utmpx. This means only 726 local binaries (e.g. from the ports tree) may still use these 727 utmp database files. These applications must be rebuilt to make 728 use of utmpx. 729 730 After the system has been upgraded, it is safe to remove the old 731 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 732 assuming their contents is of no importance anymore. Old wtmp 733 databases can only be used by last(1) and ac(8) after they have 734 been converted to the new format using wtmpcvt(1). 735 73620100108: 737 Introduce the kernel thread "deadlock resolver" (which can be enabled 738 via the DEADLKRES option, see NOTES for more details) and the 739 sleepq_type() function for sleepqueues. 740 74120091202: 742 The rc.firewall and rc.firewall6 were unified, and 743 rc.firewall6 and rc.d/ip6fw were removed. 744 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 745 variables are obsoleted. Instead, the following new rc 746 variables are added to rc.d/ipfw: 747 748 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 749 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 750 firewall_simple_onet_ipv6, firewall_trusted_ipv6 751 752 The meanings correspond to the relevant IPv4 variables. 753 75420091125: 755 8.0-RELEASE. 756 75720091113: 758 The default terminal emulation for syscons(4) has been changed 759 from cons25 to xterm on all platforms except pc98. This means 760 that the /etc/ttys file needs to be updated to ensure correct 761 operation of applications on the console. 762 763 The terminal emulation style can be toggled per window by using 764 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 765 options can be used to change the compile-time default back to 766 cons25. 767 768 To prevent graphical artifacts, make sure the TERM environment 769 variable is set to match the terminal emulation that is being 770 performed by syscons(4). 771 77220091109: 773 The layout of the structure ieee80211req_scan_result has changed. 774 Applications that require wireless scan results (e.g. ifconfig(8)) 775 from net80211 need to be recompiled. 776 777 Applications such as wpa_supplicant(8) may require a full world 778 build without using NO_CLEAN in order to get synchronized with the 779 new structure. 780 78120091025: 782 The iwn(4) driver has been updated to support the 5000 and 5150 series. 783 There's one kernel module for each firmware. Adding "device iwnfw" 784 to the kernel configuration file means including all three firmware 785 images inside the kernel. If you want to include just the one for 786 your wireless card, use the devices iwn4965fw, iwn5000fw or 787 iwn5150fw. 788 78920090926: 790 The rc.d/network_ipv6, IPv6 configuration script has been integrated 791 into rc.d/netif. The changes are the following: 792 793 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 794 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 795 Note that both variables need the "inet6" keyword at the head. 796 797 Do not set $ipv6_network_interfaces manually if you do not 798 understand what you are doing. It is not needed in most cases. 799 800 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 801 they are obsolete. 802 803 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 804 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 805 806 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 807 all configured interfaces have "inet6 accept_rtadv" in the 808 $ifconfig_IF_ipv6. These are for backward compatibility. 809 810 3. A new variable $ipv6_prefer has been added. If NO, IPv6 811 functionality of interfaces with no corresponding 812 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 813 and the default address selection policy of ip6addrctl(8) 814 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 815 Note that if you want to configure IPv6 functionality on the 816 disabled interfaces after boot, first you need to clear the flag by 817 using ifconfig(8) like: 818 819 ifconfig em0 inet6 -ifdisabled 820 821 If YES, the default address selection policy is set as 822 IPv6-preferred. 823 824 The default value of $ipv6_prefer is NO. 825 826 4. If your system need to receive Router Advertisement messages, 827 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 828 scripts automatically invoke rtsol(8) when the interface becomes 829 UP. The Router Advertisement messages are used for SLAAC 830 (State-Less Address AutoConfiguration). 831 83220090922: 833 802.11s D3.03 support was committed. This is incompatible with the 834 previous code, which was based on D3.0. 835 83620090912: 837 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 838 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 839 control whether accepting Router Advertisement messages or not. 840 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 841 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 842 The ifconfig(8) utility now supports these flags. 843 84420090910: 845 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 846 mount(8) and -a option for df(1) to see them. 847 84820090825: 849 The old tunable hw.bus.devctl_disable has been superseded by 850 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 851 replaced by hw.bus.devctl_queue=0. The default for this new tunable 852 is 1000. 853 85420090813: 855 Remove the option STOP_NMI. The default action is now to use NMI only 856 for KDB via the newly introduced function stop_cpus_hard() and 857 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 858 85920090803: 860 The stable/8 branch created in subversion. This corresponds to the 861 RELENG_8 branch in CVS. 862 86320090719: 864 Bump the shared library version numbers for all libraries that do not 865 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 866 __FreeBSD_version to 800105. 867 86820090714: 869 Due to changes in the implementation of virtual network stack support, 870 all network-related kernel modules must be recompiled. As this change 871 breaks the ABI, bump __FreeBSD_version to 800104. 872 87320090713: 874 The TOE interface to the TCP syncache has been modified to remove 875 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 876 The cxgb driver is the only TOE consumer affected by this change, and 877 needs to be recompiled along with the kernel. As this change breaks 878 the ABI, bump __FreeBSD_version to 800103. 879 88020090712: 881 Padding has been added to struct tcpcb, sackhint and tcpstat in 882 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 883 maintaining the ABI. However, this change breaks the ABI, so bump 884 __FreeBSD_version to 800102. User space tools that rely on the size of 885 any of these structs (e.g. sockstat) need to be recompiled. 886 88720090630: 888 The NFS_LEGACYRPC option has been removed along with the old kernel 889 RPC implementation that this option selected. Kernel configurations 890 may need to be adjusted. 891 89220090629: 893 The network interface device nodes at /dev/net/<interface> have been 894 removed. All ioctl operations can be performed the normal way using 895 routing sockets. The kqueue functionality can generally be replaced 896 with routing sockets. 897 89820090628: 899 The documentation from the FreeBSD Documentation Project (Handbook, 900 FAQ, etc.) is now installed via packages by sysinstall(8) and under 901 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 902 90320090624: 904 The ABI of various structures related to the SYSV IPC API have been 905 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 906 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 907 800100. 908 90920090622: 910 Layout of struct vnet has changed as routing related variables were 911 moved to their own Vimage module. Modules need to be recompiled. Bump 912 __FreeBSD_version to 800099. 913 91420090619: 915 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 916 respectively. As long as no more than 16 groups per process are used, 917 no changes should be visible. When more than 16 groups are used, old 918 binaries may fail if they call getgroups() or getgrouplist() with 919 statically sized storage. Recompiling will work around this, but 920 applications should be modified to use dynamically allocated storage 921 for group arrays as POSIX.1-2008 does not cap an implementation's 922 number of supported groups at NGROUPS_MAX+1 as previous versions did. 923 924 NFS and portalfs mounts may also be affected as the list of groups is 925 truncated to 16. Users of NFS who use more than 16 groups, should 926 take care that negative group permissions are not used on the exported 927 file systems as they will not be reliable unless a GSSAPI based 928 authentication method is used. 929 93020090616: 931 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 932 option compiles in the support for adaptive spinning for lockmgrs 933 which want to enable it. The lockinit() function now accepts the flag 934 LK_ADAPTIVE in order to make the lock object subject to adaptive 935 spinning when both held in write and read mode. 936 93720090613: 938 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 939 changed. User applications that use this ioctl need to be rebuilt. 940 94120090611: 942 The layout of struct thread has changed. Kernel and modules need to 943 be rebuilt. 944 94520090608: 946 The layout of structs ifnet, domain, protosw and vnet_net has changed. 947 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 948 94920090602: 950 window(1) has been removed from the base system. It can now be 951 installed from ports. The port is called misc/window. 952 95320090601: 954 The way we are storing and accessing `routing table' entries has 955 changed. Programs reading the FIB, like netstat, need to be 956 re-compiled. 957 95820090601: 959 A new netisr implementation has been added for FreeBSD 8. Network 960 file system modules, such as igmp, ipdivert, and others, should be 961 rebuilt. 962 Bump __FreeBSD_version to 800096. 963 96420090530: 965 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 966 more valid. 967 96820090530: 969 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 970 Bump __FreeBSD_version to 800094. 971 97220090529: 973 Add mnt_xflag field to 'struct mount'. File system modules need to be 974 rebuilt. 975 Bump __FreeBSD_version to 800093. 976 97720090528: 978 The compiling option ADAPTIVE_SX has been retired while it has been 979 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 980 The KPI for sx_init_flags() changes as accepting flags: 981 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 982 been introduced in order to handle the reversed logic. 983 Bump __FreeBSD_version to 800092. 984 98520090527: 986 Add support for hierarchical jails. Remove global securelevel. 987 Bump __FreeBSD_version to 800091. 988 98920090523: 990 The layout of struct vnet_net has changed, therefore modules 991 need to be rebuilt. 992 Bump __FreeBSD_version to 800090. 993 99420090523: 995 The newly imported zic(8) produces a new format in the output. Please 996 run tzsetup(8) to install the newly created data to /etc/localtime. 997 99820090520: 999 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1000 hw.usb.* and is now consistent again with previous releases. 1001 100220090520: 1003 802.11 monitor mode support was revised and driver api's were changed. 1004 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1005 of DLT_IEEE802_11. No user-visible data structures were changed but 1006 applications that use DLT_IEEE802_11 may require changes. 1007 Bump __FreeBSD_version to 800088. 1008 100920090430: 1010 The layout of the following structs has changed: sysctl_oid, 1011 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1012 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1013 panics may be experienced. World rebuild is required for 1014 correctly checking networking state from userland. 1015 Bump __FreeBSD_version to 800085. 1016 101720090429: 1018 MLDv2 and Source-Specific Multicast (SSM) have been merged 1019 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1020 The implementation of SSM within FreeBSD's IPv6 stack closely 1021 follows the IPv4 implementation. 1022 1023 For kernel developers: 1024 1025 * The most important changes are that the ip6_output() and 1026 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1027 and this lock has been downgraded to a non-recursive mutex. 1028 1029 * As with the changes to the IPv4 stack to support SSM, filtering 1030 of inbound multicast traffic must now be performed by transport 1031 protocols within the IPv6 stack. This does not apply to TCP and 1032 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1033 1034 * The KPIs used by IPv6 multicast are similar to those used by 1035 the IPv4 stack, with the following differences: 1036 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1037 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1038 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1039 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1040 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1041 for MLDv1 have an additional 'timer' argument which is used to 1042 jitter the initial membership report for the solicited-node 1043 multicast membership on-link. 1044 * This is not strictly needed for MLDv2, which already jitters 1045 its report transmissions. However, the 'timer' argument is 1046 preserved in case MLDv1 is active on the interface. 1047 1048 * The KAME linked-list based IPv6 membership implementation has 1049 been refactored to use a vector similar to that used by the IPv4 1050 stack. 1051 Code which maintains a list of its own multicast memberships 1052 internally, e.g. carp, has been updated to reflect the new 1053 semantics. 1054 1055 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1056 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1057 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1058 implementation constraint which needs to be addressed in HEAD. 1059 1060 For application developers: 1061 1062 * The changes are broadly similar to those made for the IPv4 1063 stack. 1064 1065 * The use of IPv4 and IPv6 multicast socket options on the same 1066 socket, using mapped addresses, HAS NOT been tested or supported. 1067 1068 * There are a number of issues with the implementation of various 1069 IPv6 multicast APIs which need to be resolved in the API surface 1070 before the implementation is fully compatible with KAME userland 1071 use, and these are mostly to do with interface index treatment. 1072 1073 * The literature available discusses the use of either the delta / ASM 1074 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1075 using setsourcefilter(3)/getsourcefilter(3). For more information 1076 please refer to RFC 3768, 'Socket Interface Extensions for 1077 Multicast Source Filters'. 1078 1079 * Applications which use the published RFC 3678 APIs should be fine. 1080 1081 For systems administrators: 1082 1083 * The mtest(8) utility has been refactored to support IPv6, in 1084 addition to IPv4. Interface addresses are no longer accepted 1085 as arguments, their names must be used instead. The utility 1086 will map the interface name to its first IPv4 address as 1087 returned by getifaddrs(3). 1088 1089 * The ifmcstat(8) utility has also been updated to print the MLDv2 1090 endpoint state and source filter lists via sysctl(3). 1091 1092 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1093 loopback of IPv6 multicast datagrams by default; it defaults to 1 1094 to preserve the existing behaviour. Disabling multicast loopback is 1095 recommended for optimal system performance. 1096 1097 * The IPv6 MROUTING code has been changed to examine this sysctl 1098 instead of attempting to perform a group lookup before looping 1099 back forwarded datagrams. 1100 1101 Bump __FreeBSD_version to 800084. 1102 110320090422: 1104 Implement low-level Bluetooth HCI API. 1105 Bump __FreeBSD_version to 800083. 1106 110720090419: 1108 The layout of struct malloc_type, used by modules to register new 1109 memory allocation types, has changed. Most modules will need to 1110 be rebuilt or panics may be experienced. 1111 Bump __FreeBSD_version to 800081. 1112 111320090415: 1114 Anticipate overflowing inp_flags - add inp_flags2. 1115 This changes most offsets in inpcb, so checking v4 connection 1116 state will require a world rebuild. 1117 Bump __FreeBSD_version to 800080. 1118 111920090415: 1120 Add an llentry to struct route and struct route_in6. Modules 1121 embedding a struct route will need to be recompiled. 1122 Bump __FreeBSD_version to 800079. 1123 112420090414: 1125 The size of rt_metrics_lite and by extension rtentry has changed. 1126 Networking administration apps will need to be recompiled. 1127 The route command now supports show as an alias for get, weighting 1128 of routes, sticky and nostick flags to alter the behavior of stateful 1129 load balancing. 1130 Bump __FreeBSD_version to 800078. 1131 113220090408: 1133 Do not use Giant for kbdmux(4) locking. This is wrong and 1134 apparently causing more problems than it solves. This will 1135 re-open the issue where interrupt handlers may race with 1136 kbdmux(4) in polling mode. Typical symptoms include (but 1137 not limited to) duplicated and/or missing characters when 1138 low level console functions (such as gets) are used while 1139 interrupts are enabled (for example geli password prompt, 1140 mountroot prompt etc.). Disabling kbdmux(4) may help. 1141 114220090407: 1143 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1144 kernel modules referencing any of the above need to be recompiled. 1145 Bump __FreeBSD_version to 800075. 1146 114720090320: 1148 GEOM_PART has become the default partition slicer for storage devices, 1149 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1150 introduces some changes: 1151 1152 MSDOS/EBR: the devices created from MSDOS extended partition entries 1153 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1154 to devices with offset-based names. fstabs may need to be modified. 1155 1156 BSD: the "geometry does not match label" warning is harmless in most 1157 cases but it points to problems in file system misalignment with 1158 disk geometry. The "c" partition is now implicit, covers the whole 1159 top-level drive and cannot be (mis)used by users. 1160 1161 General: Kernel dumps are now not allowed to be written to devices 1162 whose partition types indicate they are meant to be used for file 1163 systems (or, in case of MSDOS partitions, as something else than 1164 the "386BSD" type). 1165 1166 Most of these changes date approximately from 200812. 1167 116820090319: 1169 The uscanner(4) driver has been removed from the kernel. This follows 1170 Linux removing theirs in 2.6 and making libusb the default interface 1171 (supported by sane). 1172 117320090319: 1174 The multicast forwarding code has been cleaned up. netstat(1) 1175 only relies on KVM now for printing bandwidth upcall meters. 1176 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1177 ip6_mroute_mod respectively. The config(5) options for statically 1178 compiling this code remain the same, i.e. 'options MROUTING'. 1179 118020090315: 1181 Support for the IFF_NEEDSGIANT network interface flag has been 1182 removed, which means that non-MPSAFE network device drivers are no 1183 longer supported. In particular, if_ar, if_sr, and network device 1184 drivers from the old (legacy) USB stack can no longer be built or 1185 used. 1186 118720090313: 1188 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1189 a bunch of new language catalog files have also been added. 1190 This means that some common libc messages are now localized and 1191 they depend on the LC_MESSAGES environmental variable. 1192 119320090313: 1194 The k8temp(4) driver has been renamed to amdtemp(4) since 1195 support for Family 10 and Family 11 CPU families was added. 1196 119720090309: 1198 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1199 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1200 1201 For kernel developers, the most important changes are that the 1202 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1203 and this lock has been downgraded to a non-recursive mutex. 1204 1205 Transport protocols (UDP, Raw IP) are now responsible for filtering 1206 inbound multicast traffic according to group membership and source 1207 filters. The imo_multicast_filter() KPI exists for this purpose. 1208 Transports which do not use multicast (SCTP, TCP) already reject 1209 multicast by default. Forwarding and receive performance may improve 1210 as a mutex acquisition is no longer needed in the ip_input() 1211 low-level input path. in_addmulti() and in_delmulti() are shimmed 1212 to new KPIs which exist to support SSM in-kernel. 1213 1214 For application developers, it is recommended that loopback of 1215 multicast datagrams be disabled for best performance, as this 1216 will still cause the lock to be taken for each looped-back 1217 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1218 be tuned to 0 to disable loopback by default; it defaults to 1 1219 to preserve the existing behaviour. 1220 1221 For systems administrators, to obtain best performance with 1222 multicast reception and multiple groups, it is always recommended 1223 that a card with a suitably precise hash filter is used. Hash 1224 collisions will still result in the lock being taken within the 1225 transport protocol input path to check group membership. 1226 1227 If deploying FreeBSD in an environment with IGMP snooping switches, 1228 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1229 enabled; this forces 224.0.0.0/24 group membership to be announced 1230 via IGMP. 1231 1232 The size of 'struct igmpstat' has changed; netstat needs to be 1233 recompiled to reflect this. 1234 Bump __FreeBSD_version to 800070. 1235 123620090309: 1237 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1238 updated to use it. This requires a buildworld/installworld in order to 1239 update the library and dependencies (usbconfig, etc). Its advisable to 1240 rebuild all ports which uses libusb. More specific directions are given 1241 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1242 libusb are no longer required and can be removed. 1243 124420090302: 1245 A workaround is committed to allow the creation of System V shared 1246 memory segment of size > 2 GB on the 64-bit architectures. 1247 Due to a limitation of the existing ABI, the shm_segsz member 1248 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1249 wrong for large segments. Note that limits must be explicitly 1250 raised to allow such segments to be created. 1251 125220090301: 1253 The layout of struct ifnet has changed, requiring a rebuild of all 1254 network device driver modules. 1255 125620090227: 1257 The /dev handling for the new USB stack has changed, a 1258 buildworld/installworld is required for libusb20. 1259 126020090223: 1261 The new USB2 stack has now been permanently moved in and all kernel and 1262 module names reverted to their previous values (eg, usb, ehci, ohci, 1263 ums, ...). The old usb stack can be compiled in by prefixing the name 1264 with the letter 'o', the old usb modules have been removed. 1265 Updating entry 20090216 for xorg and 20090215 for libmap may still 1266 apply. 1267 126820090217: 1269 The rc.conf(5) option if_up_delay has been renamed to 1270 defaultroute_delay to better reflect its purpose. If you have 1271 customized this setting in /etc/rc.conf you need to update it to 1272 use the new name. 1273 127420090216: 1275 xorg 7.4 wants to configure its input devices via hald which does not 1276 yet work with USB2. If the keyboard/mouse does not work in xorg then 1277 add 1278 Option "AllowEmptyInput" "off" 1279 to your ServerLayout section. This will cause X to use the configured 1280 kbd and mouse sections from your xorg.conf. 1281 128220090215: 1283 The GENERIC kernels for all architectures now default to the new USB2 1284 stack. No kernel config options or code have been removed so if a 1285 problem arises please report it and optionally revert to the old USB 1286 stack. If you are loading USB kernel modules or have a custom kernel 1287 that includes GENERIC then ensure that usb names are also changed over, 1288 eg uftdi -> usb2_serial_ftdi. 1289 1290 Older programs linked against the ports libusb 0.1 need to be 1291 redirected to the new stack's libusb20. /etc/libmap.conf can 1292 be used for this: 1293 # Map old usb library to new one for usb2 stack 1294 libusb-0.1.so.8 libusb20.so.1 1295 129620090209: 1297 All USB ethernet devices now attach as interfaces under the name ueN 1298 (eg. ue0). This is to provide a predictable name as vendors often 1299 change usb chipsets in a product without notice. 1300 130120090203: 1302 The ichsmb(4) driver has been changed to require SMBus slave 1303 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1304 All of the other SMBus controller drivers require left-justified 1305 slave addresses, so this change makes all the drivers provide the 1306 same interface. 1307 130820090201: 1309 INET6 statistics (struct ip6stat) was updated. 1310 netstat(1) needs to be recompiled. 1311 131220090119: 1313 NTFS has been removed from GENERIC kernel on amd64 to match 1314 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1315 will load ntfs.ko module automatically when NTFS support is 1316 actually needed, unless ntfs.ko is not installed or security 1317 level prohibits loading kernel modules. If either is the case, 1318 "options NTFS" has to be added into kernel config. 1319 132020090115: 1321 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1322 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1323 800061. User space tools that rely on the size of struct tcpcb in 1324 tcp_var.h (e.g. sockstat) need to be recompiled. 1325 132620081225: 1327 ng_tty(4) module updated to match the new TTY subsystem. 1328 Due to API change, user-level applications must be updated. 1329 New API support added to mpd5 CVS and expected to be present 1330 in next mpd5.3 release. 1331 133220081219: 1333 With __FreeBSD_version 800060 the makefs tool is part of 1334 the base system (it was a port). 1335 133620081216: 1337 The afdata and ifnet locks have been changed from mutexes to 1338 rwlocks, network modules will need to be re-compiled. 1339 134020081214: 1341 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1342 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1343 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1344 architecture and 40 bytes on 64-bit architecture. The userland 1345 applications "arp" and "ndp" have been updated accordingly. 1346 The output from "netstat -r" shows only routing entries and 1347 none of the L2 information. 1348 134920081130: 1350 __FreeBSD_version 800057 marks the switchover from the 1351 binary ath hal to source code. Users must add the line: 1352 1353 options AH_SUPPORT_AR5416 1354 1355 to their kernel config files when specifying: 1356 1357 device ath_hal 1358 1359 The ath_hal module no longer exists; the code is now compiled 1360 together with the driver in the ath module. It is now 1361 possible to tailor chip support (i.e. reduce the set of chips 1362 and thereby the code size); consult ath_hal(4) for details. 1363 136420081121: 1365 __FreeBSD_version 800054 adds memory barriers to 1366 <machine/atomic.h>, new interfaces to ifnet to facilitate 1367 multiple hardware transmit queues for cards that support 1368 them, and a lock-less ring-buffer implementation to 1369 enable drivers to more efficiently manage queueing of 1370 packets. 1371 137220081117: 1373 A new version of ZFS (version 13) has been merged to -HEAD. 1374 This version has zpool attribute "listsnapshots" off by 1375 default, which means "zfs list" does not show snapshots, 1376 and is the same as Solaris behavior. 1377 137820081028: 1379 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1380 138120081009: 1382 The uhci, ohci, ehci and slhci USB Host controller drivers have 1383 been put into separate modules. If you load the usb module 1384 separately through loader.conf you will need to load the 1385 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1386 controller add the following to loader.conf: 1387 1388 uhci_load="YES" 1389 ehci_load="YES" 1390 139120081009: 1392 The ABI used by the PMC toolset has changed. Please keep 1393 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1394 sync. 1395 139620081009: 1397 atapci kernel module now includes only generic PCI ATA 1398 driver. AHCI driver moved to ataahci kernel module. 1399 All vendor-specific code moved into separate kernel modules: 1400 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1401 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1402 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1403 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1404 140520080820: 1406 The TTY subsystem of the kernel has been replaced by a new 1407 implementation, which provides better scalability and an 1408 improved driver model. Most common drivers have been migrated to 1409 the new TTY subsystem, while others have not. The following 1410 drivers have not yet been ported to the new TTY layer: 1411 1412 PCI/ISA: 1413 cy, digi, rc, rp, sio 1414 1415 USB: 1416 ubser, ucycom 1417 1418 Line disciplines: 1419 ng_h4, ng_tty, ppp, sl, snp 1420 1421 Adding these drivers to your kernel configuration file shall 1422 cause compilation to fail. 1423 142420080818: 1425 ntpd has been upgraded to 4.2.4p5. 1426 142720080801: 1428 OpenSSH has been upgraded to 5.1p1. 1429 1430 For many years, FreeBSD's version of OpenSSH preferred DSA 1431 over RSA for host and user authentication keys. With this 1432 upgrade, we've switched to the vendor's default of RSA over 1433 DSA. This may cause upgraded clients to warn about unknown 1434 host keys even for previously known hosts. Users should 1435 follow the usual procedure for verifying host keys before 1436 accepting the RSA key. 1437 1438 This can be circumvented by setting the "HostKeyAlgorithms" 1439 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1440 command line. 1441 1442 Please note that the sequence of keys offered for 1443 authentication has been changed as well. You may want to 1444 specify IdentityFile in a different order to revert this 1445 behavior. 1446 144720080713: 1448 The sio(4) driver has been removed from the i386 and amd64 1449 kernel configuration files. This means uart(4) is now the 1450 default serial port driver on those platforms as well. 1451 1452 To prevent collisions with the sio(4) driver, the uart(4) driver 1453 uses different names for its device nodes. This means the 1454 onboard serial port will now most likely be called "ttyu0" 1455 instead of "ttyd0". You may need to reconfigure applications to 1456 use the new device names. 1457 1458 When using the serial port as a boot console, be sure to update 1459 /boot/device.hints and /etc/ttys before booting the new kernel. 1460 If you forget to do so, you can still manually specify the hints 1461 at the loader prompt: 1462 1463 set hint.uart.0.at="isa" 1464 set hint.uart.0.port="0x3F8" 1465 set hint.uart.0.flags="0x10" 1466 set hint.uart.0.irq="4" 1467 boot -s 1468 146920080609: 1470 The gpt(8) utility has been removed. Use gpart(8) to partition 1471 disks instead. 1472 147320080603: 1474 The version that Linuxulator emulates was changed from 2.4.2 1475 to 2.6.16. If you experience any problems with Linux binaries 1476 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1477 if it fixes the problem contact emulation mailing list. 1478 147920080525: 1480 ISDN4BSD (I4B) was removed from the src tree. You may need to 1481 update a your kernel configuration and remove relevant entries. 1482 148320080509: 1484 I have checked in code to support multiple routing tables. 1485 See the man pages setfib(1) and setfib(2). 1486 This is a hopefully backwards compatible version, 1487 but to make use of it you need to compile your kernel 1488 with options ROUTETABLES=2 (or more up to 16). 1489 149020080420: 1491 The 802.11 wireless support was redone to enable multi-bss 1492 operation on devices that are capable. The underlying device 1493 is no longer used directly but instead wlanX devices are 1494 cloned with ifconfig. This requires changes to rc.conf files. 1495 For example, change: 1496 ifconfig_ath0="WPA DHCP" 1497 to 1498 wlans_ath0=wlan0 1499 ifconfig_wlan0="WPA DHCP" 1500 see rc.conf(5) for more details. In addition, mergemaster of 1501 /etc/rc.d is highly recommended. Simultaneous update of userland 1502 and kernel wouldn't hurt either. 1503 1504 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1505 modules were merged into the base wlan module. All references 1506 to these modules (e.g. in kernel config files) must be removed. 1507 150820080408: 1509 psm(4) has gained write(2) support in native operation level. 1510 Arbitrary commands can be written to /dev/psm%d and status can 1511 be read back from it. Therefore, an application is responsible 1512 for status validation and error recovery. It is a no-op in 1513 other operation levels. 1514 151520080312: 1516 Support for KSE threading has been removed from the kernel. To 1517 run legacy applications linked against KSE libmap.conf may 1518 be used. The following libmap.conf may be used to ensure 1519 compatibility with any prior release: 1520 1521 libpthread.so.1 libthr.so.1 1522 libpthread.so.2 libthr.so.2 1523 libkse.so.3 libthr.so.3 1524 152520080301: 1526 The layout of struct vmspace has changed. This affects libkvm 1527 and any executables that link against libkvm and use the 1528 kvm_getprocs() function. In particular, but not exclusively, 1529 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1530 The effects are minimal, but it's advisable to upgrade world 1531 nonetheless. 1532 153320080229: 1534 The latest em driver no longer has support in it for the 1535 82575 adapter, this is now moved to the igb driver. The 1536 split was done to make new features that are incompatible 1537 with older hardware easier to do. 1538 153920080220: 1540 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1541 likewise the kernel option is now GEOM_LINUX_LVM. 1542 154320080211: 1544 The default NFS mount mode has changed from UDP to TCP for 1545 increased reliability. If you rely on (insecurely) NFS 1546 mounting across a firewall you may need to update your 1547 firewall rules. 1548 154920080208: 1550 Belatedly note the addition of m_collapse for compacting 1551 mbuf chains. 1552 155320080126: 1554 The fts(3) structures have been changed to use adequate 1555 integer types for their members and so to be able to cope 1556 with huge file trees. The old fts(3) ABI is preserved 1557 through symbol versioning in libc, so third-party binaries 1558 using fts(3) should still work, although they will not take 1559 advantage of the extended types. At the same time, some 1560 third-party software might fail to build after this change 1561 due to unportable assumptions made in its source code about 1562 fts(3) structure members. Such software should be fixed 1563 by its vendor or, in the worst case, in the ports tree. 1564 FreeBSD_version 800015 marks this change for the unlikely 1565 case that a portable fix is impossible. 1566 156720080123: 1568 To upgrade to -current after this date, you must be running 1569 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1570 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1571 157220071128: 1573 The ADAPTIVE_GIANT kernel option has been retired because its 1574 functionality is the default now. 1575 157620071118: 1577 The AT keyboard emulation of sunkbd(4) has been turned on 1578 by default. In order to make the special symbols of the Sun 1579 keyboards driven by sunkbd(4) work under X these now have 1580 to be configured the same way as Sun USB keyboards driven 1581 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1582 1583 Option "XkbLayout" "us" 1584 Option "XkbRules" "xorg" 1585 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1586 158720071024: 1588 It has been decided that it is desirable to provide ABI 1589 backwards compatibility to the FreeBSD 4/5/6 versions of the 1590 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1591 broken with the introduction of PCI domain support (see the 1592 20070930 entry). Unfortunately, this required the ABI of 1593 PCIOCGETCONF to be broken again in order to be able to 1594 provide backwards compatibility to the old version of that 1595 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1596 again. As for prominent ports this affects neither pciutils 1597 nor xorg-server this time, the hal port needs to be rebuilt 1598 however. 1599 160020071020: 1601 The misnamed kthread_create() and friends have been renamed 1602 to kproc_create() etc. Many of the callers already 1603 used kproc_start().. 1604 I will return kthread_create() and friends in a while 1605 with implementations that actually create threads, not procs. 1606 Renaming corresponds with version 800002. 1607 160820071010: 1609 RELENG_7 branched. 1610 1611COMMON ITEMS: 1612 1613 General Notes 1614 ------------- 1615 Avoid using make -j when upgrading. While generally safe, there are 1616 sometimes problems using -j to upgrade. If your upgrade fails with 1617 -j, please try again without -j. From time to time in the past there 1618 have been problems using -j with buildworld and/or installworld. This 1619 is especially true when upgrading between "distant" versions (eg one 1620 that cross a major release boundary or several minor releases, or when 1621 several months have passed on the -current branch). 1622 1623 Sometimes, obscure build problems are the result of environment 1624 poisoning. This can happen because the make utility reads its 1625 environment when searching for values for global variables. To run 1626 your build attempts in an "environmental clean room", prefix all make 1627 commands with 'env -i '. See the env(1) manual page for more details. 1628 1629 When upgrading from one major version to another it is generally best 1630 to upgrade to the latest code in the currently installed branch first, 1631 then do an upgrade to the new branch. This is the best-tested upgrade 1632 path, and has the highest probability of being successful. Please try 1633 this approach before reporting problems with a major version upgrade. 1634 1635 ZFS notes 1636 --------- 1637 When upgrading the boot ZFS pool to a new version, always follow 1638 these two steps: 1639 1640 1.) recompile and reinstall the ZFS boot loader and boot block 1641 (this is part of "make buildworld" and "make installworld") 1642 1643 2.) update the ZFS boot block on your boot drive 1644 1645 The following example updates the ZFS boot block on the first 1646 partition (freebsd-boot) of a GPT partitioned drive ad0: 1647 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1648 1649 Non-boot pools do not need these updates. 1650 1651 To build a kernel 1652 ----------------- 1653 If you are updating from a prior version of FreeBSD (even one just 1654 a few days old), you should follow this procedure. It is the most 1655 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1656 1657 make kernel-toolchain 1658 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1659 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1660 1661 To test a kernel once 1662 --------------------- 1663 If you just want to boot a kernel once (because you are not sure 1664 if it works, or if you want to boot a known bad kernel to provide 1665 debugging information) run 1666 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1667 nextboot -k testkernel 1668 1669 To just build a kernel when you know that it won't mess you up 1670 -------------------------------------------------------------- 1671 This assumes you are already running a CURRENT system. Replace 1672 ${arch} with the architecture of your machine (e.g. "i386", 1673 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1674 1675 cd src/sys/${arch}/conf 1676 config KERNEL_NAME_HERE 1677 cd ../compile/KERNEL_NAME_HERE 1678 make depend 1679 make 1680 make install 1681 1682 If this fails, go to the "To build a kernel" section. 1683 1684 To rebuild everything and install it on the current system. 1685 ----------------------------------------------------------- 1686 # Note: sometimes if you are running current you gotta do more than 1687 # is listed here if you are upgrading from a really old current. 1688 1689 <make sure you have good level 0 dumps> 1690 make buildworld 1691 make kernel KERNCONF=YOUR_KERNEL_HERE 1692 [1] 1693 <reboot in single user> [3] 1694 mergemaster -p [5] 1695 make installworld 1696 mergemaster -i [4] 1697 make delete-old [6] 1698 <reboot> 1699 1700 1701 To cross-install current onto a separate partition 1702 -------------------------------------------------- 1703 # In this approach we use a separate partition to hold 1704 # current's root, 'usr', and 'var' directories. A partition 1705 # holding "/", "/usr" and "/var" should be about 2GB in 1706 # size. 1707 1708 <make sure you have good level 0 dumps> 1709 <boot into -stable> 1710 make buildworld 1711 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1712 <maybe newfs current's root partition> 1713 <mount current's root partition on directory ${CURRENT_ROOT}> 1714 make installworld DESTDIR=${CURRENT_ROOT} 1715 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1716 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1717 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1718 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1719 <reboot into current> 1720 <do a "native" rebuild/install as described in the previous section> 1721 <maybe install compatibility libraries from ports/misc/compat*> 1722 <reboot> 1723 1724 1725 To upgrade in-place from stable to current 1726 ---------------------------------------------- 1727 <make sure you have good level 0 dumps> 1728 make buildworld [9] 1729 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1730 [1] 1731 <reboot in single user> [3] 1732 mergemaster -p [5] 1733 make installworld 1734 mergemaster -i [4] 1735 make delete-old [6] 1736 <reboot> 1737 1738 Make sure that you've read the UPDATING file to understand the 1739 tweaks to various things you need. At this point in the life 1740 cycle of current, things change often and you are on your own 1741 to cope. The defaults can also change, so please read ALL of 1742 the UPDATING entries. 1743 1744 Also, if you are tracking -current, you must be subscribed to 1745 freebsd-current@freebsd.org. Make sure that before you update 1746 your sources that you have read and understood all the recent 1747 messages there. If in doubt, please track -stable which has 1748 much fewer pitfalls. 1749 1750 [1] If you have third party modules, such as vmware, you 1751 should disable them at this point so they don't crash your 1752 system on reboot. 1753 1754 [3] From the bootblocks, boot -s, and then do 1755 fsck -p 1756 mount -u / 1757 mount -a 1758 cd src 1759 adjkerntz -i # if CMOS is wall time 1760 Also, when doing a major release upgrade, it is required that 1761 you boot into single user mode to do the installworld. 1762 1763 [4] Note: This step is non-optional. Failure to do this step 1764 can result in a significant reduction in the functionality of the 1765 system. Attempting to do it by hand is not recommended and those 1766 that pursue this avenue should read this file carefully, as well 1767 as the archives of freebsd-current and freebsd-hackers mailing lists 1768 for potential gotchas. The -U option is also useful to consider. 1769 See mergemaster(8) for more information. 1770 1771 [5] Usually this step is a noop. However, from time to time 1772 you may need to do this if you get unknown user in the following 1773 step. It never hurts to do it all the time. You may need to 1774 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1775 install) after the buildworld before this step if you last updated 1776 from [78]-stable or 9-stable before 20130430. 1777 1778 [6] This only deletes old files and directories. Old libraries 1779 can be deleted by "make delete-old-libs", but you have to make 1780 sure that no program is using those libraries anymore. 1781 1782 [8] In order to have a kernel that can run the 4.x binaries needed to 1783 do an installworld, you must include the COMPAT_FREEBSD4 option in 1784 your kernel. Failure to do so may leave you with a system that is 1785 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1786 required to run the 5.x binaries on more recent kernels. And so on 1787 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1788 1789 Make sure that you merge any new devices from GENERIC since the 1790 last time you updated your kernel config file. 1791 1792 [9] When checking out sources, you must include the -P flag to have 1793 cvs prune empty directories. 1794 1795 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 1796 "?=" instead of the "=" assignment operator, so that buildworld can 1797 override the CPUTYPE if it needs to. 1798 1799 MAKEOBJDIRPREFIX must be defined in an environment variable, and 1800 not on the command line, or in /etc/make.conf. buildworld will 1801 warn if it is improperly defined. 1802FORMAT: 1803 1804This file contains a list, in reverse chronological order, of major 1805breakages in tracking -current. It is not guaranteed to be a complete 1806list of such breakages, and only contains entries since October 10, 2007. 1807If you need to see UPDATING entries from before that date, you will need 1808to fetch an UPDATING file from an older FreeBSD release. 1809 1810Copyright information: 1811 1812Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 1813 1814Redistribution, publication, translation and use, with or without 1815modification, in full or in part, in any form or format of this 1816document are permitted without further permission from the author. 1817 1818THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 1819IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1820WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 1821DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 1822INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 1823(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 1824SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 1825HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 1826STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 1827IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1828POSSIBILITY OF SUCH DAMAGE. 1829 1830Contact Warner Losh if you have any questions about your use of 1831this document. 1832 1833$FreeBSD: releng/9.3/UPDATING 286902 2015-08-18 19:30:35Z delphij $ 1834