UPDATING revision 287410
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 1420150902: p25 FreeBSD-SA-15:23.bind 15 16 Fix BIND remote denial of service vulnerability. [SA-15:23] 17 1820150825: p24 FreeBSD-SA-15:21.amd64 19 FreeBSD-SA-15:22.openssh 20 FreeBSD-EN-15:15.pkg 21 22 Fix local privilege escalation in IRET handler. [SA-15:21] 23 24 Fix OpenSSH multiple vulnerabilities. [SA-15:22] 25 26 Fix insufficient check of unsupported pkg(7) signature methods. 27 [EN-15:15] 28 2920150818: p23 FreeBSD-SA-15:20.expat 30 31 Fix multiple integer overflows in expat (libbsdxml) XML parser. 32 [SA-15:20] 33 3420150805: p22 FreeBSD-SA-15:19.routed 35 36 Fix routed remote denial of service vulnerability. 37 3820150728: p21 FreeBSD-SA-15:15.tcp 39 FreeBSD-SA-15:16.openssh 40 FreeBSD-SA-15:17.bind 41 42 Fix resource exhaustion in TCP reassembly. [SA-15:15] 43 44 Fix OpenSSH multiple vulnerabilities. [SA-15:16] 45 46 Fix BIND remote denial of service vulnerability. [SA-15:17] 47 4820150721: p20 FreeBSD-SA-15:13.tcp 49 50 Fix resource exhaustion due to sessions stuck in LAST_ACK state. 51 [SA-15:13] 52 5320150707: p19 FreeBSD-SA-15:11.bind 54 Fix BIND resolver remote denial of service when validating. 55 5620150630: p18 FreeBSD-EN-15:08.sendmail [revised] 57 FreeBSD-EN-15:09.xlocale 58 59 Improvements to sendmail TLS/DH interoperability. [EN-15:08] 60 61 Fix inconsistency between locale and rune locale states. 62 [EN-15:09] 63 6420150618: p17 FreeBSD-EN-15:08.sendmail 65 Improvements to sendmail TLS/DH interoperability. [EN-15:08] 66 6720150612: p16 FreeBSD-SA-15:10.openssl 68 Fix multiple vulnerabilities in OpenSSL. [SA-15:10] 69 7020150609: p15 FreeBSD-EN-15:06.file 71 72 Updated base system file(1) to 5.22 to address multiple denial 73 of service issues. 74 7520150513: p14 FreeBSD-EN-15:04.freebsd-update 76 77 Fix bug with freebsd-update(8) that does not ensure the previous 78 upgrade was completed. [EN-15:04] 79 8020150407: p13 FreeBSD-SA-15:04.igmp [revised] 81 FreeBSD-SA-15:07.ntp 82 FreeBSD-SA-15:09.ipv6 83 84 Improved patch for SA-15:04.igmp. 85 86 Fix multiple vulnerabilities of ntp. [SA-15:07] 87 88 Fix Denial of Service with IPv6 Router Advertisements. [SA-15:09] 89 9020150320: p12 91 Fix patch for SA-15:06.openssl. 92 9320150319: p11 FreeBSD-SA-15:06.openssl 94 Fix multiple vulnerabilities in OpenSSL. [SA-15:06] 95 9620150225: p10 FreeBSD-SA-15:04.igmp 97 FreeBSD-SA-15:05.bind 98 FreeBSD-EN-15:01.vt 99 FreeBSD-EN-15:02.openssl 100 FreeBSD-EN-15:03.freebsd-update 101 102 Fix integer overflow in IGMP protocol. [SA-15:04] 103 104 Fix BIND remote denial of service vulnerability. [SA-15:05] 105 106 Fix vt(4) crash with improper ioctl parameters. [EN-15:01] 107 108 Updated base system OpenSSL to 0.9.8zd. [EN-15:02] 109 110 Fix freebsd-update libraries update ordering issue. [EN-15:03] 111 11220150127: p9 FreeBSD-SA-15:02.kmem 113 FreeBSD-SA-15:03.sctp 114 115 Fix SCTP SCTP_SS_VALUE kernel memory corruption and disclosure 116 vulnerability. [SA-15:02] 117 118 Fix SCTP stream reset vulnerability. [SA-15:03] 119 12020150114: p8 FreeBSD-SA-15:01.openssl 121 Fix multiple vulnerabilities in OpenSSL. [SA-15:01] 122 12320141223: p7 FreeBSD-SA-14:31.ntp 124 FreeBSD-EN-14:13.freebsd-update 125 126 Fix multiple vulnerabilities in NTP suite. [SA-14:31] 127 Fix directory deletion issue in freebsd-update. [EN-14:13] 128 12920141210: p6 FreeBSD-SA-14:28.file 130 FreeBSD-SA-14:29.bind 131 132 Fix multiple vulnerabilities in file(1) and libmagic(3). 133 [SA-14:28] 134 135 Fix BIND remote denial of service vulnerability. [SA-14:29] 136 13720141104: p5 FreeBSD-SA-14:25.setlogin 138 FreeBSD-SA-14:26.ftp 139 FreeBSD-EN-14:12.zfs 140 141 Fix kernel stack disclosure in setlogin(2) / getlogin(2). 142 [SA-14:25] 143 144 Fix remote command execution in ftp(1). [SA-14:26] 145 146 Fix NFSv4 and ZFS cache consistency issue. [EN-14:12] 147 14820141022: p4 FreeBSD-EN-14:10.tzdata 149 FreeBSD-EN-14:11.crypt 150 151 Time zone data file update. [EN-14:10] 152 153 Change crypt(3) default hashing algorithm back to DES. [EN-14:11] 154 15520141021: p3 FreeBSD-SA-14:20.rtsold 156 FreeBSD-SA-14:21.routed 157 FreeBSD-SA-14:22.namei 158 FreeBSD-SA-14:23.openssl 159 160 Fix rtsold(8) remote buffer overflow vulnerability. [SA-14:20] 161 162 Fix routed(8) remote denial of service vulnerability. [SA-14:21] 163 164 Fix memory leak in sandboxed namei lookup. [SA-14:22] 165 166 Fix OpenSSL multiple vulnerabilities. [SA-14:23] 167 16820140916: p2 FreeBSD-SA-14:19.tcp 169 Fix Denial of Service in TCP packet processing. [SA-14:19] 170 17120140909: p1 FreeBSD-SA-14:18.openssl 172 Fix OpenSSL multiple vulnerabilities. [SA-14:18] 173 17420140716: 175 9.3-RELEASE. 176 17720140608: 178 On i386 and amd64 systems, the onifconsole flag is now set by default 179 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled 180 as a login TTY if it is set in the bootloader as an active kernel 181 console. No changes in behavior should result otherwise. To revert to 182 the previous behavior, set ttyu0 to "off" in /etc/ttys. 183 18420140512: 185 Clang and llvm have been upgraded to 3.4.1 release. 186 18720140321: 188 Clang and llvm have been upgraded to 3.4 release. 189 19020140216: 191 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has 192 been deprecated and will not be part of FreeBSD 11.0 and later 193 releases. If you use this driver, please consider switching to 194 the nfe(4) driver instead. 195 19620131216: 197 The behavior of gss_pseudo_random() for the krb5 mechanism 198 has changed, for applications requesting a longer random string 199 than produced by the underlying enctype's pseudo-random() function. 200 In particular, the random string produced from a session key of 201 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 202 be different at the 17th octet and later, after this change. 203 The counter used in the PRF+ construction is now encoded as a 204 big-endian integer in accordance with RFC 4402. 205 __FreeBSD_version is bumped to 902505. 206 20720130930: 208 9.2-RELEASE. 209 21020130823: 211 Behavior of devfs rules path matching has been changed. 212 Pattern is now always matched against fully qualified devfs 213 path and slash characters must be explicitly matched by 214 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 215 subdirectories must be reviewed. 216 21720130705: 218 hastctl(8)'s `status' command output changed to terse one-liner format. 219 Scripts using this should switch to `list' command or be rewritten. 220 22120130618: 222 Fix a bug that allowed a tracing process (e.g. gdb) to write 223 to a memory-mapped file in the traced process's address space 224 even if neither the traced process nor the tracing process had 225 write access to that file. 226 22720130605: 228 Added ZFS TRIM support which is enabled by default. To disable 229 ZFS TRIM support set vfs.zfs.trim.enabled=0 in loader.conf. 230 231 Creating new ZFS pools and adding new devices to existing pools 232 first performs a full device level TRIM which can take a significant 233 amount of time. The sysctl vfs.zfs.vdev.trim_on_init can be set to 0 234 to disable this behaviour. 235 236 ZFS TRIM requires the underlying device support BIO_DELETE which 237 is currently provided by methods such as ATA TRIM and SCSI UNMAP 238 via CAM, which are typically supported by SSD's. 239 240 Stats for ZFS TRIM can be monitored by looking at the sysctl's 241 under kstat.zfs.misc.zio_trim. 242 24320130524: 244 `list' command has been added to hastctl(8). For now, it is full 245 equivalent of `status' command. 246 WARNING: in the near future the output of hastctl's status command 247 will change to more terse format. If you use `hastctl status' 248 for parsing in your scripts, switch to `hastctl list'. 249 25020130430: 251 The mergemaster command now uses the default MAKEOBJDIRPREFIX 252 rather than creating it's own in the temporary directory in 253 order allow access to bootstrapped versions of tools such as 254 install and mtree. When upgrading from version of FreeBSD where 255 the install command does not support -l, you will need to 256 install a new mergemaster command if mergemaster -p is required. 257 This can be accomplished with the command (cd src/usr.sbin/mergemaster 258 && make install). 259 260 Due to the use of the new -l option to install(1) during build 261 and install, you must take care not to directly set the INSTALL 262 make variable in your /etc/make.conf, /etc/src.conf, or on the 263 command line. If you wish to use the -C flag for all installs 264 you may be able to add INSTALL+=-C to /etc/make.conf or 265 /etc/src.conf. 266 26720130429: 268 Fix a bug that allows NFS clients to issue READDIR on files. 269 27020130315: 271 The install(1) option -M has changed meaning and now takes an 272 argument that is a file or path to append logs to. In the 273 unlikely event that -M was the last option on the command line 274 and the command line contained at least two files and a target 275 directory the first file will have logs appended to it. The -M 276 option served little practical purpose in the last decade so it's 277 used expected to be extremely rare. 278 27920130225: 280 A new compression method (lz4) has been merged to. Please refer to 281 zpool-features(7) for more information. 282 283 Please refer to the "ZFS notes" section of this file for information 284 on upgrading boot ZFS pools. 285 28620121224: 287 The VFS KBI was changed with the merge of several nullfs 288 optimizations and fixes. All filesystem modules must be 289 recompiled. 290 29120121218: 292 With the addition of auditdistd(8), a new auditdistd user is now 293 depended on during installworld. "mergemaster -p" can be used to add 294 the user prior to installworld, as documented in the handbook. 295 29620121205: 297 9.1-RELEASE. 298 29920121129: 300 A new version of ZFS (pool version 5000) has been merged to 9-STABLE. 301 Starting with this version the old system of ZFS pool versioning 302 is superseded by "feature flags". This concept enables forward 303 compatibility against certain future changes in functionality of ZFS 304 pools. The first two read-only compatible "feature flags" for ZFS 305 pools are "com.delphix:async_destroy" and "com.delphix:empty_bpobj". 306 For more information read the new zpool-features(7) manual page. 307 Please refer to the "ZFS notes" section of this file for information 308 on upgrading boot ZFS pools. 309 31020121114: 311 The commit introducing bsd.compiler.mk breaks the traditional 312 building of kernels before this point. Add -m ${SRC}/share/mk 313 (for the right value of SRC) to your command lines to work 314 around; update your useland to a point after this; or use the 315 buildkernel/installkernel top-level targets. See also 20120829. 316 31720121102: 318 The IPFIREWALL_FORWARD kernel option has been removed. Its 319 functionality now turned on by default. 320 32120120913: 322 The random(4) support for the VIA hardware random number 323 generator (`PADLOCK') is no longer enabled unconditionally. 324 Add the PADLOCK_RNG option in the custom kernel config if 325 needed. The GENERIC kernels on i386 and amd64 do include the 326 option, so the change only affects the custom kernel 327 configurations. 328 32920120829: 330 The amd64 kernel now uses xsetbv, xrstor instructions. To compile with 331 the traditional method, you must update your system with an installworld 332 before the kernel will build. The documented make buildkernel/installkernel 333 interfaces (coupled with fresh make kernel-toolchain) continue to work. 334 33520120727: 336 The sparc64 ZFS loader has been changed to no longer try to auto- 337 detect ZFS providers based on diskN aliases but now requires these 338 to be explicitly listed in the OFW boot-device environment variable. 339 34020120422: 341 Now unix domain sockets behave "as expected" on nullfs(5). Previously 342 nullfs(5) did not pass through all behaviours to the underlying layer, 343 as a result if we bound to a socket on the lower layer we could connect 344 only to the lower path; if we bound to the upper layer we could connect 345 only to the upper path. The new behavior is one can connect to both the 346 lower and the upper paths regardless what layer path one binds to. 347 34820120109: 349 The acpi_wmi(4) status device /dev/wmistat has been renamed to 350 /dev/wmistat0. 351 35220120106: 353 A new VOP_ADVISE() was added to support posix_fadvise(2). All 354 filesystem modules must be recompiled. 355 35620120106: 357 The interface of the VOP_VPTOCNP(9) changed, now the returned 358 vnode shall be referenced, previously it was required to be 359 only held. All in-tree filesystems are converted. 360 36120120106: 362 9.0-RELEASE. 363 36420111101: 365 The broken amd(4) driver has been replaced with esp(4) in the amd64, 366 i386 and pc98 GENERIC kernel configuration files. 367 36820110913: 369 This commit modifies vfs_register() so that it uses a hash 370 calculation to set vfc_typenum, which is enabled by default. 371 The first time a system is booted after this change, the 372 vfc_typenum values will change for all file systems. The 373 main effect of this is a change to the NFS server file handles 374 for file systems that use vfc_typenum in their fsid, such as ZFS. 375 It will, however, prevent vfc_typenum from changing when file 376 systems are loaded in a different order for subsequent reboots. 377 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 378 until you are ready to remount all NFS clients after a reboot. 379 38020110828: 381 Bump the shared library version numbers for libraries that 382 do not use symbol versioning, have changed the ABI compared 383 to stable/8 and which shared library version was not bumped. 384 Done as part of 9.0-RELEASE cycle. 385 38620110815: 387 During the merge of Capsicum features, the fget(9) KPI was modified. 388 This may require the rebuilding of out-of-tree device drivers -- 389 issues have been reported specifically with the nVidia device driver. 390 __FreeBSD_version is bumped to 900041. 391 392 Also, there is a period between 20110811 and 20110814 where the 393 special devices /dev/{stdin,stdout,stderr} did not work correctly. 394 Building world from a kernel during that window may not work. 395 39620110628: 397 The packet filter (pf) code has been updated to OpenBSD 4.5. 398 You need to update userland tools to be in sync with kernel. 399 This update breaks backward compatibility with earlier pfsync(4) 400 versions. Care must be taken when updating redundant firewall setups. 401 40220110608: 403 The following sysctls and tunables are retired on x86 platforms: 404 machdep.hlt_cpus 405 machdep.hlt_logical_cpus 406 The following sysctl is retired: 407 machdep.hyperthreading_allowed 408 The sysctls were supposed to provide a way to dynamically offline and 409 online selected CPUs on x86 platforms, but the implementation has not 410 been reliable especially with SCHED_ULE scheduler. 411 machdep.hyperthreading_allowed tunable is still available to ignore 412 hyperthreading CPUs at OS level. 413 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 414 where X is an APIC ID of a CPU. Be advised, though, that disabling 415 CPUs in non-uniform fashion will result in non-uniform topology and 416 may lead to sub-optimal system performance with SCHED_ULE, which is 417 a default scheduler. 418 41920110607: 420 cpumask_t type is retired and cpuset_t is used in order to describe 421 a mask of CPUs. 422 42320110531: 424 Changes to ifconfig(8) for dynamic address family detection mandate 425 that you are running a kernel of 20110525 or later. Make sure to 426 follow the update procedure to boot a new kernel before installing 427 world. 428 42920110513: 430 Support for sun4v architecture is officially dropped 431 43220110503: 433 Several KPI breaking changes have been committed to the mii(4) layer, 434 the PHY drivers and consequently some Ethernet drivers using mii(4). 435 This means that miibus.ko and the modules of the affected Ethernet 436 drivers need to be recompiled. 437 438 Note to kernel developers: Given that the OUI bit reversion problem 439 was fixed as part of these changes all mii(4) commits related to OUIs, 440 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 441 handling, no longer can be merged verbatim to stable/8 and previous 442 branches. 443 44420110430: 445 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 446 into their kernel configurations along with 'device pci'. 447 44820110427: 449 The default NFS client is now the new NFS client, so fstype "newnfs" 450 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 451 Although mounts via fstype "nfs" will usually work without userland 452 changes, it is recommended that the mount(8) and mount_nfs(8) 453 commands be rebuilt from sources and that a link to mount_nfs called 454 mount_oldnfs be created. The new client is compiled into the 455 kernel with "options NFSCL" and this is needed for diskless root 456 file systems. The GENERIC kernel configs have been changed to use 457 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 458 To use the regular/old client, you can "mount -t oldnfs ...". For 459 a diskless root file system, you must also include a line like: 460 461 vfs.root.mountfrom="oldnfs:" 462 463 in the boot/loader.conf on the root fs on the NFS server to make 464 a diskless root fs use the old client. 465 46620110424: 467 The GENERIC kernels for all architectures now default to the new 468 CAM-based ATA stack. It means that all legacy ATA drivers were 469 removed and replaced by respective CAM drivers. If you are using 470 ATA device names in /etc/fstab or other places, make sure to update 471 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 472 where 'Y's are the sequential numbers starting from zero for each type 473 in order of detection, unless configured otherwise with tunables, 474 see cam(4)). There will be symbolic links created in /dev/ to map 475 old adX devices to the respective adaY. They should provide basic 476 compatibility for file systems mounting in most cases, but they do 477 not support old user-level APIs and do not have respective providers 478 in GEOM. Consider using updated management tools with new device names. 479 480 It is possible to load devices ahci, ata, siis and mvs as modules, 481 but option ATA_CAM should remain in kernel configuration to make ata 482 module work as CAM driver supporting legacy ATA controllers. Device ata 483 still can be used in modular fashion (atacore + ...). Modules atadisk 484 and atapi* are not used and won't affect operation in ATA_CAM mode. 485 Note that to use CAM-based ATA kernel should include CAM devices 486 scbus, pass, da (or explicitly ada), cd and optionally others. All of 487 them are parts of the cam module. 488 489 ataraid(4) functionality is now supported by the RAID GEOM class. 490 To use it you can load geom_raid kernel module and use graid(8) tool 491 for management. Instead of /dev/arX device names, use /dev/raid/rX. 492 493 No kernel config options or code have been removed, so if a problem 494 arises, please report it and optionally revert to the old ATA stack. 495 In order to do it you can remove from the kernel config: 496 options ATA_CAM 497 device ahci 498 device mvs 499 device siis 500 , and instead add back: 501 device atadisk # ATA disk drives 502 device ataraid # ATA RAID drives 503 device atapicd # ATAPI CDROM drives 504 device atapifd # ATAPI floppy drives 505 device atapist # ATAPI tape drives 506 50720110423: 508 The default NFS server has been changed to the new server, which 509 was referred to as the experimental server. If you need to switch 510 back to the old NFS server, you must now put the "-o" option on 511 both the mountd and nfsd commands. This can be done using the 512 mountd_flags and nfs_server_flags rc.conf variables until an 513 update to the rc scripts is committed, which is coming soon. 514 51520110418: 516 The GNU Objective-C runtime library (libobjc), and other Objective-C 517 related components have been removed from the base system. If you 518 require an Objective-C library, please use one of the available ports. 519 52020110331: 521 ath(4) has been split into bus- and device- modules. if_ath contains 522 the HAL, the TX rate control and the network device code. if_ath_pci 523 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 524 contains the AHB glue. Users need to load both if_ath_pci and if_ath 525 in order to use ath on everything else. 526 527 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 528 need to load if_ath and if_ath_pci for ath(4) operation. 529 53020110314: 531 As part of the replacement of sysinstall, the process of building 532 release media has changed significantly. For details, please re-read 533 release(7), which has been updated to reflect the new build process. 534 53520110218: 536 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 537 is the last available version under GPLv2. It brings a number of new 538 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 539 4.1 and SSE 4.2), better support for powerpc64, a number of new 540 directives, and lots of other small improvements. See the ChangeLog 541 file in contrib/binutils for the full details. 542 54320110218: 544 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 545 compliant, and will now use half of hash for authentication. 546 This will break interoperability with all stacks (including all 547 actual FreeBSD versions) who implement 548 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 549 authentication). 550 The only workaround with such peers is to use another HMAC 551 algorithm for IPsec ("phase 2") authentication. 552 55320110207: 554 Remove the uio_yield prototype and symbol. This function has 555 been misnamed since it was introduced and should not be 556 globally exposed with this name. The equivalent functionality 557 is now available using kern_yield(curthread->td_user_pri). 558 The function remains undocumented. 559 56020110112: 561 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 562 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 563 for scalar sysctls is defined but disabled. Code that needs 564 UQUAD to pass the type checking that must compile on older 565 systems where the define is not present can check against 566 __FreeBSD_version >= 900030. 567 568 The system dialog(1) has been replaced with a new version previously 569 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 570 with the previous version, but the libdialog associated with it has 571 a largely incompatible API. As such, the original version of libdialog 572 will be kept temporarily as libodialog, until its base system consumers 573 are replaced or updated. Bump __FreeBSD_version to 900030. 574 57520110103: 576 If you are trying to run make universe on a -stable system, and you get 577 the following warning: 578 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 579 unknown. config(8) likely too old." 580 or something similar to it, then you must upgrade your -stable system 581 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 582 stable/8) or build the config from the latest stable/8 branch and 583 install it on your system. 584 585 Prior to this date, building a current universe on 8-stable system from 586 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 587 error in the first kernel build phase. A new config on those old 588 systems will fix that problem for older versions of -current. 589 59020101228: 591 The TCP stack has been modified to allow Khelp modules to interact with 592 it via helper hook points and store per-connection data in the TCP 593 control block. Bump __FreeBSD_version to 900029. User space tools that 594 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 595 be recompiled. 596 59720101114: 598 Generic IEEE 802.3 annex 31B full duplex flow control support has been 599 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 600 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 601 to take advantage of it instead of using custom implementations. This 602 means that these drivers now no longer unconditionally advertise 603 support for flow control but only do so if flow control is a selected 604 media option. This was implemented in the generic support that way in 605 order to allow flow control to be switched on and off via ifconfig(8) 606 with the PHY specific default to typically off in order to protect 607 from unwanted effects. Consequently, if you used flow control with 608 one of the above mentioned drivers you now need to explicitly enable 609 it, for example via: 610 ifconfig bge0 media auto mediaopt flowcontrol 611 612 Along with the above mentioned changes generic support for setting 613 1000baseT master mode also has been added and brgphy(4), ciphy(4), 614 e1000phy(4) as well as ip1000phy(4) have been converted to take 615 advantage of it. This means that these drivers now no longer take the 616 link0 parameter for selecting master mode but the master media option 617 has to be used instead, for example like in the following: 618 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 619 620 Selection of master mode now is also available with all other PHY 621 drivers supporting 1000baseT. 622 62320101111: 624 The TCP stack has received a significant update to add support for 625 modularised congestion control and generally improve the clarity of 626 congestion control decisions. Bump __FreeBSD_version to 900025. User 627 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 628 sockstat) need to be recompiled. 629 63020101002: 631 The man(1) utility has been replaced by a new version that no longer 632 uses /etc/manpath.config. Please consult man.conf(5) for how to 633 migrate local entries to the new format. 634 63520100928: 636 The copyright strings printed by login(1) and sshd(8) at the time of a 637 new connection have been removed to follow other operating systems and 638 upstream sshd. 639 64020100915: 641 A workaround for a fixed ld bug has been removed in kernel code, 642 so make sure that your system ld is built from sources after 643 revision 210245 from 2010-07-19 (r211583 if building head kernel 644 on stable/8, r211584 for stable/7; both from 2010-08-21). 645 A symptom of incorrect ld version is different addresses for 646 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 647 64820100913: 649 The $ipv6_prefer variable in rc.conf(5) has been split into 650 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 651 652 The $ip6addrctl_policy is a variable to choose a pre-defined 653 address selection policy set by ip6addrctl(8). A value 654 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 655 default is "AUTO". 656 657 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 658 flag (see an entry of 20090926) is set on an interface with no 659 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 660 security reason. If you want IPv6 link-local address on all 661 interfaces by default, set this to "YES". 662 663 The old ipv6_prefer="YES" is equivalent to 664 ipv6_activate_all_interfaces="YES" and 665 ip6addrctl_policy="ipv6_prefer". 666 66720100913: 668 DTrace has grown support for userland tracing. Due to this, DTrace is 669 now i386 and amd64 only. 670 dtruss(1) is now installed by default on those systems and a new 671 kernel module is needed for userland tracing: fasttrap. 672 No changes to your kernel config file are necessary to enable 673 userland tracing, but you might consider adding 'STRIP=' and 674 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 675 to have informative userland stack traces in DTrace (ustack). 676 67720100725: 678 The acpi_aiboost(4) driver has been removed in favor of the new 679 aibs(4) driver. You should update your kernel configuration file. 680 68120100722: 682 BSD grep has been imported to the base system and it is built by 683 default. It is completely BSD licensed, highly GNU-compatible, uses 684 less memory than its GNU counterpart and has a small codebase. 685 However, it is slower than its GNU counterpart, which is mostly 686 noticeable for larger searches, for smaller ones it is measurable 687 but not significant. The reason is complex, the most important factor 688 is that we lack a modern and efficient regex library and GNU 689 overcomes this by optimizing the searches internally. Future work 690 on improving the regex performance is planned, for the meantime, 691 users that need better performance, can build GNU grep instead by 692 setting the WITH_GNU_GREP knob. 693 69420100713: 695 Due to the import of powerpc64 support, all existing powerpc kernel 696 configuration files must be updated with a machine directive like this: 697 machine powerpc powerpc 698 699 In addition, an updated config(8) is required to build powerpc kernels 700 after this change. 701 70220100713: 703 A new version of ZFS (version 15) has been merged to -HEAD. 704 This version uses a python library for the following subcommands: 705 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 706 For full functionality of these commands the following port must 707 be installed: sysutils/py-zfs 708 70920100429: 710 'vm_page's are now hashed by physical address to an array of mutexes. 711 Currently this is only used to serialize access to hold_count. Over 712 time the page queue mutex will be peeled away. This changes the size 713 of pmap on every architecture. And requires all callers of vm_page_hold 714 and vm_page_unhold to be updated. 715 71620100402: 717 WITH_CTF can now be specified in src.conf (not recommended, there 718 are some problems with static executables), make.conf (would also 719 affect ports which do not use GNU make and do not override the 720 compile targets) or in the kernel config (via "makeoptions 721 WITH_CTF=yes"). 722 When WITH_CTF was specified there before this was silently ignored, 723 so make sure that WITH_CTF is not used in places which could lead 724 to unwanted behavior. 725 72620100311: 727 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 728 to allow 32-bit compatibility on non-x86 platforms. All kernel 729 configurations on amd64 and ia64 platforms using these options must 730 be modified accordingly. 731 73220100113: 733 The utmp user accounting database has been replaced with utmpx, 734 the user accounting interface standardized by POSIX. 735 Unfortunately the semantics of utmp and utmpx don't match, 736 making it practically impossible to support both interfaces. 737 The user accounting database is used by tools like finger(1), 738 last(1), talk(1), w(1) and ac(8). 739 740 All applications in the base system use utmpx. This means only 741 local binaries (e.g. from the ports tree) may still use these 742 utmp database files. These applications must be rebuilt to make 743 use of utmpx. 744 745 After the system has been upgraded, it is safe to remove the old 746 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 747 assuming their contents is of no importance anymore. Old wtmp 748 databases can only be used by last(1) and ac(8) after they have 749 been converted to the new format using wtmpcvt(1). 750 75120100108: 752 Introduce the kernel thread "deadlock resolver" (which can be enabled 753 via the DEADLKRES option, see NOTES for more details) and the 754 sleepq_type() function for sleepqueues. 755 75620091202: 757 The rc.firewall and rc.firewall6 were unified, and 758 rc.firewall6 and rc.d/ip6fw were removed. 759 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 760 variables are obsoleted. Instead, the following new rc 761 variables are added to rc.d/ipfw: 762 763 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 764 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 765 firewall_simple_onet_ipv6, firewall_trusted_ipv6 766 767 The meanings correspond to the relevant IPv4 variables. 768 76920091125: 770 8.0-RELEASE. 771 77220091113: 773 The default terminal emulation for syscons(4) has been changed 774 from cons25 to xterm on all platforms except pc98. This means 775 that the /etc/ttys file needs to be updated to ensure correct 776 operation of applications on the console. 777 778 The terminal emulation style can be toggled per window by using 779 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 780 options can be used to change the compile-time default back to 781 cons25. 782 783 To prevent graphical artifacts, make sure the TERM environment 784 variable is set to match the terminal emulation that is being 785 performed by syscons(4). 786 78720091109: 788 The layout of the structure ieee80211req_scan_result has changed. 789 Applications that require wireless scan results (e.g. ifconfig(8)) 790 from net80211 need to be recompiled. 791 792 Applications such as wpa_supplicant(8) may require a full world 793 build without using NO_CLEAN in order to get synchronized with the 794 new structure. 795 79620091025: 797 The iwn(4) driver has been updated to support the 5000 and 5150 series. 798 There's one kernel module for each firmware. Adding "device iwnfw" 799 to the kernel configuration file means including all three firmware 800 images inside the kernel. If you want to include just the one for 801 your wireless card, use the devices iwn4965fw, iwn5000fw or 802 iwn5150fw. 803 80420090926: 805 The rc.d/network_ipv6, IPv6 configuration script has been integrated 806 into rc.d/netif. The changes are the following: 807 808 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 809 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 810 Note that both variables need the "inet6" keyword at the head. 811 812 Do not set $ipv6_network_interfaces manually if you do not 813 understand what you are doing. It is not needed in most cases. 814 815 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 816 they are obsolete. 817 818 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 819 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 820 821 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 822 all configured interfaces have "inet6 accept_rtadv" in the 823 $ifconfig_IF_ipv6. These are for backward compatibility. 824 825 3. A new variable $ipv6_prefer has been added. If NO, IPv6 826 functionality of interfaces with no corresponding 827 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 828 and the default address selection policy of ip6addrctl(8) 829 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 830 Note that if you want to configure IPv6 functionality on the 831 disabled interfaces after boot, first you need to clear the flag by 832 using ifconfig(8) like: 833 834 ifconfig em0 inet6 -ifdisabled 835 836 If YES, the default address selection policy is set as 837 IPv6-preferred. 838 839 The default value of $ipv6_prefer is NO. 840 841 4. If your system need to receive Router Advertisement messages, 842 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 843 scripts automatically invoke rtsol(8) when the interface becomes 844 UP. The Router Advertisement messages are used for SLAAC 845 (State-Less Address AutoConfiguration). 846 84720090922: 848 802.11s D3.03 support was committed. This is incompatible with the 849 previous code, which was based on D3.0. 850 85120090912: 852 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 853 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 854 control whether accepting Router Advertisement messages or not. 855 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 856 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 857 The ifconfig(8) utility now supports these flags. 858 85920090910: 860 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 861 mount(8) and -a option for df(1) to see them. 862 86320090825: 864 The old tunable hw.bus.devctl_disable has been superseded by 865 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 866 replaced by hw.bus.devctl_queue=0. The default for this new tunable 867 is 1000. 868 86920090813: 870 Remove the option STOP_NMI. The default action is now to use NMI only 871 for KDB via the newly introduced function stop_cpus_hard() and 872 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 873 87420090803: 875 The stable/8 branch created in subversion. This corresponds to the 876 RELENG_8 branch in CVS. 877 87820090719: 879 Bump the shared library version numbers for all libraries that do not 880 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 881 __FreeBSD_version to 800105. 882 88320090714: 884 Due to changes in the implementation of virtual network stack support, 885 all network-related kernel modules must be recompiled. As this change 886 breaks the ABI, bump __FreeBSD_version to 800104. 887 88820090713: 889 The TOE interface to the TCP syncache has been modified to remove 890 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 891 The cxgb driver is the only TOE consumer affected by this change, and 892 needs to be recompiled along with the kernel. As this change breaks 893 the ABI, bump __FreeBSD_version to 800103. 894 89520090712: 896 Padding has been added to struct tcpcb, sackhint and tcpstat in 897 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 898 maintaining the ABI. However, this change breaks the ABI, so bump 899 __FreeBSD_version to 800102. User space tools that rely on the size of 900 any of these structs (e.g. sockstat) need to be recompiled. 901 90220090630: 903 The NFS_LEGACYRPC option has been removed along with the old kernel 904 RPC implementation that this option selected. Kernel configurations 905 may need to be adjusted. 906 90720090629: 908 The network interface device nodes at /dev/net/<interface> have been 909 removed. All ioctl operations can be performed the normal way using 910 routing sockets. The kqueue functionality can generally be replaced 911 with routing sockets. 912 91320090628: 914 The documentation from the FreeBSD Documentation Project (Handbook, 915 FAQ, etc.) is now installed via packages by sysinstall(8) and under 916 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 917 91820090624: 919 The ABI of various structures related to the SYSV IPC API have been 920 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 921 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 922 800100. 923 92420090622: 925 Layout of struct vnet has changed as routing related variables were 926 moved to their own Vimage module. Modules need to be recompiled. Bump 927 __FreeBSD_version to 800099. 928 92920090619: 930 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 931 respectively. As long as no more than 16 groups per process are used, 932 no changes should be visible. When more than 16 groups are used, old 933 binaries may fail if they call getgroups() or getgrouplist() with 934 statically sized storage. Recompiling will work around this, but 935 applications should be modified to use dynamically allocated storage 936 for group arrays as POSIX.1-2008 does not cap an implementation's 937 number of supported groups at NGROUPS_MAX+1 as previous versions did. 938 939 NFS and portalfs mounts may also be affected as the list of groups is 940 truncated to 16. Users of NFS who use more than 16 groups, should 941 take care that negative group permissions are not used on the exported 942 file systems as they will not be reliable unless a GSSAPI based 943 authentication method is used. 944 94520090616: 946 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 947 option compiles in the support for adaptive spinning for lockmgrs 948 which want to enable it. The lockinit() function now accepts the flag 949 LK_ADAPTIVE in order to make the lock object subject to adaptive 950 spinning when both held in write and read mode. 951 95220090613: 953 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 954 changed. User applications that use this ioctl need to be rebuilt. 955 95620090611: 957 The layout of struct thread has changed. Kernel and modules need to 958 be rebuilt. 959 96020090608: 961 The layout of structs ifnet, domain, protosw and vnet_net has changed. 962 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 963 96420090602: 965 window(1) has been removed from the base system. It can now be 966 installed from ports. The port is called misc/window. 967 96820090601: 969 The way we are storing and accessing `routing table' entries has 970 changed. Programs reading the FIB, like netstat, need to be 971 re-compiled. 972 97320090601: 974 A new netisr implementation has been added for FreeBSD 8. Network 975 file system modules, such as igmp, ipdivert, and others, should be 976 rebuilt. 977 Bump __FreeBSD_version to 800096. 978 97920090530: 980 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 981 more valid. 982 98320090530: 984 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 985 Bump __FreeBSD_version to 800094. 986 98720090529: 988 Add mnt_xflag field to 'struct mount'. File system modules need to be 989 rebuilt. 990 Bump __FreeBSD_version to 800093. 991 99220090528: 993 The compiling option ADAPTIVE_SX has been retired while it has been 994 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 995 The KPI for sx_init_flags() changes as accepting flags: 996 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 997 been introduced in order to handle the reversed logic. 998 Bump __FreeBSD_version to 800092. 999 100020090527: 1001 Add support for hierarchical jails. Remove global securelevel. 1002 Bump __FreeBSD_version to 800091. 1003 100420090523: 1005 The layout of struct vnet_net has changed, therefore modules 1006 need to be rebuilt. 1007 Bump __FreeBSD_version to 800090. 1008 100920090523: 1010 The newly imported zic(8) produces a new format in the output. Please 1011 run tzsetup(8) to install the newly created data to /etc/localtime. 1012 101320090520: 1014 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1015 hw.usb.* and is now consistent again with previous releases. 1016 101720090520: 1018 802.11 monitor mode support was revised and driver api's were changed. 1019 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1020 of DLT_IEEE802_11. No user-visible data structures were changed but 1021 applications that use DLT_IEEE802_11 may require changes. 1022 Bump __FreeBSD_version to 800088. 1023 102420090430: 1025 The layout of the following structs has changed: sysctl_oid, 1026 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1027 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1028 panics may be experienced. World rebuild is required for 1029 correctly checking networking state from userland. 1030 Bump __FreeBSD_version to 800085. 1031 103220090429: 1033 MLDv2 and Source-Specific Multicast (SSM) have been merged 1034 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1035 The implementation of SSM within FreeBSD's IPv6 stack closely 1036 follows the IPv4 implementation. 1037 1038 For kernel developers: 1039 1040 * The most important changes are that the ip6_output() and 1041 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1042 and this lock has been downgraded to a non-recursive mutex. 1043 1044 * As with the changes to the IPv4 stack to support SSM, filtering 1045 of inbound multicast traffic must now be performed by transport 1046 protocols within the IPv6 stack. This does not apply to TCP and 1047 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1048 1049 * The KPIs used by IPv6 multicast are similar to those used by 1050 the IPv4 stack, with the following differences: 1051 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1052 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1053 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1054 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1055 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1056 for MLDv1 have an additional 'timer' argument which is used to 1057 jitter the initial membership report for the solicited-node 1058 multicast membership on-link. 1059 * This is not strictly needed for MLDv2, which already jitters 1060 its report transmissions. However, the 'timer' argument is 1061 preserved in case MLDv1 is active on the interface. 1062 1063 * The KAME linked-list based IPv6 membership implementation has 1064 been refactored to use a vector similar to that used by the IPv4 1065 stack. 1066 Code which maintains a list of its own multicast memberships 1067 internally, e.g. carp, has been updated to reflect the new 1068 semantics. 1069 1070 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1071 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1072 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1073 implementation constraint which needs to be addressed in HEAD. 1074 1075 For application developers: 1076 1077 * The changes are broadly similar to those made for the IPv4 1078 stack. 1079 1080 * The use of IPv4 and IPv6 multicast socket options on the same 1081 socket, using mapped addresses, HAS NOT been tested or supported. 1082 1083 * There are a number of issues with the implementation of various 1084 IPv6 multicast APIs which need to be resolved in the API surface 1085 before the implementation is fully compatible with KAME userland 1086 use, and these are mostly to do with interface index treatment. 1087 1088 * The literature available discusses the use of either the delta / ASM 1089 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1090 using setsourcefilter(3)/getsourcefilter(3). For more information 1091 please refer to RFC 3768, 'Socket Interface Extensions for 1092 Multicast Source Filters'. 1093 1094 * Applications which use the published RFC 3678 APIs should be fine. 1095 1096 For systems administrators: 1097 1098 * The mtest(8) utility has been refactored to support IPv6, in 1099 addition to IPv4. Interface addresses are no longer accepted 1100 as arguments, their names must be used instead. The utility 1101 will map the interface name to its first IPv4 address as 1102 returned by getifaddrs(3). 1103 1104 * The ifmcstat(8) utility has also been updated to print the MLDv2 1105 endpoint state and source filter lists via sysctl(3). 1106 1107 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1108 loopback of IPv6 multicast datagrams by default; it defaults to 1 1109 to preserve the existing behaviour. Disabling multicast loopback is 1110 recommended for optimal system performance. 1111 1112 * The IPv6 MROUTING code has been changed to examine this sysctl 1113 instead of attempting to perform a group lookup before looping 1114 back forwarded datagrams. 1115 1116 Bump __FreeBSD_version to 800084. 1117 111820090422: 1119 Implement low-level Bluetooth HCI API. 1120 Bump __FreeBSD_version to 800083. 1121 112220090419: 1123 The layout of struct malloc_type, used by modules to register new 1124 memory allocation types, has changed. Most modules will need to 1125 be rebuilt or panics may be experienced. 1126 Bump __FreeBSD_version to 800081. 1127 112820090415: 1129 Anticipate overflowing inp_flags - add inp_flags2. 1130 This changes most offsets in inpcb, so checking v4 connection 1131 state will require a world rebuild. 1132 Bump __FreeBSD_version to 800080. 1133 113420090415: 1135 Add an llentry to struct route and struct route_in6. Modules 1136 embedding a struct route will need to be recompiled. 1137 Bump __FreeBSD_version to 800079. 1138 113920090414: 1140 The size of rt_metrics_lite and by extension rtentry has changed. 1141 Networking administration apps will need to be recompiled. 1142 The route command now supports show as an alias for get, weighting 1143 of routes, sticky and nostick flags to alter the behavior of stateful 1144 load balancing. 1145 Bump __FreeBSD_version to 800078. 1146 114720090408: 1148 Do not use Giant for kbdmux(4) locking. This is wrong and 1149 apparently causing more problems than it solves. This will 1150 re-open the issue where interrupt handlers may race with 1151 kbdmux(4) in polling mode. Typical symptoms include (but 1152 not limited to) duplicated and/or missing characters when 1153 low level console functions (such as gets) are used while 1154 interrupts are enabled (for example geli password prompt, 1155 mountroot prompt etc.). Disabling kbdmux(4) may help. 1156 115720090407: 1158 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1159 kernel modules referencing any of the above need to be recompiled. 1160 Bump __FreeBSD_version to 800075. 1161 116220090320: 1163 GEOM_PART has become the default partition slicer for storage devices, 1164 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1165 introduces some changes: 1166 1167 MSDOS/EBR: the devices created from MSDOS extended partition entries 1168 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1169 to devices with offset-based names. fstabs may need to be modified. 1170 1171 BSD: the "geometry does not match label" warning is harmless in most 1172 cases but it points to problems in file system misalignment with 1173 disk geometry. The "c" partition is now implicit, covers the whole 1174 top-level drive and cannot be (mis)used by users. 1175 1176 General: Kernel dumps are now not allowed to be written to devices 1177 whose partition types indicate they are meant to be used for file 1178 systems (or, in case of MSDOS partitions, as something else than 1179 the "386BSD" type). 1180 1181 Most of these changes date approximately from 200812. 1182 118320090319: 1184 The uscanner(4) driver has been removed from the kernel. This follows 1185 Linux removing theirs in 2.6 and making libusb the default interface 1186 (supported by sane). 1187 118820090319: 1189 The multicast forwarding code has been cleaned up. netstat(1) 1190 only relies on KVM now for printing bandwidth upcall meters. 1191 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1192 ip6_mroute_mod respectively. The config(5) options for statically 1193 compiling this code remain the same, i.e. 'options MROUTING'. 1194 119520090315: 1196 Support for the IFF_NEEDSGIANT network interface flag has been 1197 removed, which means that non-MPSAFE network device drivers are no 1198 longer supported. In particular, if_ar, if_sr, and network device 1199 drivers from the old (legacy) USB stack can no longer be built or 1200 used. 1201 120220090313: 1203 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1204 a bunch of new language catalog files have also been added. 1205 This means that some common libc messages are now localized and 1206 they depend on the LC_MESSAGES environmental variable. 1207 120820090313: 1209 The k8temp(4) driver has been renamed to amdtemp(4) since 1210 support for Family 10 and Family 11 CPU families was added. 1211 121220090309: 1213 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1214 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1215 1216 For kernel developers, the most important changes are that the 1217 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1218 and this lock has been downgraded to a non-recursive mutex. 1219 1220 Transport protocols (UDP, Raw IP) are now responsible for filtering 1221 inbound multicast traffic according to group membership and source 1222 filters. The imo_multicast_filter() KPI exists for this purpose. 1223 Transports which do not use multicast (SCTP, TCP) already reject 1224 multicast by default. Forwarding and receive performance may improve 1225 as a mutex acquisition is no longer needed in the ip_input() 1226 low-level input path. in_addmulti() and in_delmulti() are shimmed 1227 to new KPIs which exist to support SSM in-kernel. 1228 1229 For application developers, it is recommended that loopback of 1230 multicast datagrams be disabled for best performance, as this 1231 will still cause the lock to be taken for each looped-back 1232 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1233 be tuned to 0 to disable loopback by default; it defaults to 1 1234 to preserve the existing behaviour. 1235 1236 For systems administrators, to obtain best performance with 1237 multicast reception and multiple groups, it is always recommended 1238 that a card with a suitably precise hash filter is used. Hash 1239 collisions will still result in the lock being taken within the 1240 transport protocol input path to check group membership. 1241 1242 If deploying FreeBSD in an environment with IGMP snooping switches, 1243 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1244 enabled; this forces 224.0.0.0/24 group membership to be announced 1245 via IGMP. 1246 1247 The size of 'struct igmpstat' has changed; netstat needs to be 1248 recompiled to reflect this. 1249 Bump __FreeBSD_version to 800070. 1250 125120090309: 1252 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1253 updated to use it. This requires a buildworld/installworld in order to 1254 update the library and dependencies (usbconfig, etc). Its advisable to 1255 rebuild all ports which uses libusb. More specific directions are given 1256 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1257 libusb are no longer required and can be removed. 1258 125920090302: 1260 A workaround is committed to allow the creation of System V shared 1261 memory segment of size > 2 GB on the 64-bit architectures. 1262 Due to a limitation of the existing ABI, the shm_segsz member 1263 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1264 wrong for large segments. Note that limits must be explicitly 1265 raised to allow such segments to be created. 1266 126720090301: 1268 The layout of struct ifnet has changed, requiring a rebuild of all 1269 network device driver modules. 1270 127120090227: 1272 The /dev handling for the new USB stack has changed, a 1273 buildworld/installworld is required for libusb20. 1274 127520090223: 1276 The new USB2 stack has now been permanently moved in and all kernel and 1277 module names reverted to their previous values (eg, usb, ehci, ohci, 1278 ums, ...). The old usb stack can be compiled in by prefixing the name 1279 with the letter 'o', the old usb modules have been removed. 1280 Updating entry 20090216 for xorg and 20090215 for libmap may still 1281 apply. 1282 128320090217: 1284 The rc.conf(5) option if_up_delay has been renamed to 1285 defaultroute_delay to better reflect its purpose. If you have 1286 customized this setting in /etc/rc.conf you need to update it to 1287 use the new name. 1288 128920090216: 1290 xorg 7.4 wants to configure its input devices via hald which does not 1291 yet work with USB2. If the keyboard/mouse does not work in xorg then 1292 add 1293 Option "AllowEmptyInput" "off" 1294 to your ServerLayout section. This will cause X to use the configured 1295 kbd and mouse sections from your xorg.conf. 1296 129720090215: 1298 The GENERIC kernels for all architectures now default to the new USB2 1299 stack. No kernel config options or code have been removed so if a 1300 problem arises please report it and optionally revert to the old USB 1301 stack. If you are loading USB kernel modules or have a custom kernel 1302 that includes GENERIC then ensure that usb names are also changed over, 1303 eg uftdi -> usb2_serial_ftdi. 1304 1305 Older programs linked against the ports libusb 0.1 need to be 1306 redirected to the new stack's libusb20. /etc/libmap.conf can 1307 be used for this: 1308 # Map old usb library to new one for usb2 stack 1309 libusb-0.1.so.8 libusb20.so.1 1310 131120090209: 1312 All USB ethernet devices now attach as interfaces under the name ueN 1313 (eg. ue0). This is to provide a predictable name as vendors often 1314 change usb chipsets in a product without notice. 1315 131620090203: 1317 The ichsmb(4) driver has been changed to require SMBus slave 1318 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1319 All of the other SMBus controller drivers require left-justified 1320 slave addresses, so this change makes all the drivers provide the 1321 same interface. 1322 132320090201: 1324 INET6 statistics (struct ip6stat) was updated. 1325 netstat(1) needs to be recompiled. 1326 132720090119: 1328 NTFS has been removed from GENERIC kernel on amd64 to match 1329 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1330 will load ntfs.ko module automatically when NTFS support is 1331 actually needed, unless ntfs.ko is not installed or security 1332 level prohibits loading kernel modules. If either is the case, 1333 "options NTFS" has to be added into kernel config. 1334 133520090115: 1336 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1337 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1338 800061. User space tools that rely on the size of struct tcpcb in 1339 tcp_var.h (e.g. sockstat) need to be recompiled. 1340 134120081225: 1342 ng_tty(4) module updated to match the new TTY subsystem. 1343 Due to API change, user-level applications must be updated. 1344 New API support added to mpd5 CVS and expected to be present 1345 in next mpd5.3 release. 1346 134720081219: 1348 With __FreeBSD_version 800060 the makefs tool is part of 1349 the base system (it was a port). 1350 135120081216: 1352 The afdata and ifnet locks have been changed from mutexes to 1353 rwlocks, network modules will need to be re-compiled. 1354 135520081214: 1356 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1357 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1358 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1359 architecture and 40 bytes on 64-bit architecture. The userland 1360 applications "arp" and "ndp" have been updated accordingly. 1361 The output from "netstat -r" shows only routing entries and 1362 none of the L2 information. 1363 136420081130: 1365 __FreeBSD_version 800057 marks the switchover from the 1366 binary ath hal to source code. Users must add the line: 1367 1368 options AH_SUPPORT_AR5416 1369 1370 to their kernel config files when specifying: 1371 1372 device ath_hal 1373 1374 The ath_hal module no longer exists; the code is now compiled 1375 together with the driver in the ath module. It is now 1376 possible to tailor chip support (i.e. reduce the set of chips 1377 and thereby the code size); consult ath_hal(4) for details. 1378 137920081121: 1380 __FreeBSD_version 800054 adds memory barriers to 1381 <machine/atomic.h>, new interfaces to ifnet to facilitate 1382 multiple hardware transmit queues for cards that support 1383 them, and a lock-less ring-buffer implementation to 1384 enable drivers to more efficiently manage queueing of 1385 packets. 1386 138720081117: 1388 A new version of ZFS (version 13) has been merged to -HEAD. 1389 This version has zpool attribute "listsnapshots" off by 1390 default, which means "zfs list" does not show snapshots, 1391 and is the same as Solaris behavior. 1392 139320081028: 1394 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1395 139620081009: 1397 The uhci, ohci, ehci and slhci USB Host controller drivers have 1398 been put into separate modules. If you load the usb module 1399 separately through loader.conf you will need to load the 1400 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1401 controller add the following to loader.conf: 1402 1403 uhci_load="YES" 1404 ehci_load="YES" 1405 140620081009: 1407 The ABI used by the PMC toolset has changed. Please keep 1408 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1409 sync. 1410 141120081009: 1412 atapci kernel module now includes only generic PCI ATA 1413 driver. AHCI driver moved to ataahci kernel module. 1414 All vendor-specific code moved into separate kernel modules: 1415 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1416 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1417 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1418 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1419 142020080820: 1421 The TTY subsystem of the kernel has been replaced by a new 1422 implementation, which provides better scalability and an 1423 improved driver model. Most common drivers have been migrated to 1424 the new TTY subsystem, while others have not. The following 1425 drivers have not yet been ported to the new TTY layer: 1426 1427 PCI/ISA: 1428 cy, digi, rc, rp, sio 1429 1430 USB: 1431 ubser, ucycom 1432 1433 Line disciplines: 1434 ng_h4, ng_tty, ppp, sl, snp 1435 1436 Adding these drivers to your kernel configuration file shall 1437 cause compilation to fail. 1438 143920080818: 1440 ntpd has been upgraded to 4.2.4p5. 1441 144220080801: 1443 OpenSSH has been upgraded to 5.1p1. 1444 1445 For many years, FreeBSD's version of OpenSSH preferred DSA 1446 over RSA for host and user authentication keys. With this 1447 upgrade, we've switched to the vendor's default of RSA over 1448 DSA. This may cause upgraded clients to warn about unknown 1449 host keys even for previously known hosts. Users should 1450 follow the usual procedure for verifying host keys before 1451 accepting the RSA key. 1452 1453 This can be circumvented by setting the "HostKeyAlgorithms" 1454 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1455 command line. 1456 1457 Please note that the sequence of keys offered for 1458 authentication has been changed as well. You may want to 1459 specify IdentityFile in a different order to revert this 1460 behavior. 1461 146220080713: 1463 The sio(4) driver has been removed from the i386 and amd64 1464 kernel configuration files. This means uart(4) is now the 1465 default serial port driver on those platforms as well. 1466 1467 To prevent collisions with the sio(4) driver, the uart(4) driver 1468 uses different names for its device nodes. This means the 1469 onboard serial port will now most likely be called "ttyu0" 1470 instead of "ttyd0". You may need to reconfigure applications to 1471 use the new device names. 1472 1473 When using the serial port as a boot console, be sure to update 1474 /boot/device.hints and /etc/ttys before booting the new kernel. 1475 If you forget to do so, you can still manually specify the hints 1476 at the loader prompt: 1477 1478 set hint.uart.0.at="isa" 1479 set hint.uart.0.port="0x3F8" 1480 set hint.uart.0.flags="0x10" 1481 set hint.uart.0.irq="4" 1482 boot -s 1483 148420080609: 1485 The gpt(8) utility has been removed. Use gpart(8) to partition 1486 disks instead. 1487 148820080603: 1489 The version that Linuxulator emulates was changed from 2.4.2 1490 to 2.6.16. If you experience any problems with Linux binaries 1491 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1492 if it fixes the problem contact emulation mailing list. 1493 149420080525: 1495 ISDN4BSD (I4B) was removed from the src tree. You may need to 1496 update a your kernel configuration and remove relevant entries. 1497 149820080509: 1499 I have checked in code to support multiple routing tables. 1500 See the man pages setfib(1) and setfib(2). 1501 This is a hopefully backwards compatible version, 1502 but to make use of it you need to compile your kernel 1503 with options ROUTETABLES=2 (or more up to 16). 1504 150520080420: 1506 The 802.11 wireless support was redone to enable multi-bss 1507 operation on devices that are capable. The underlying device 1508 is no longer used directly but instead wlanX devices are 1509 cloned with ifconfig. This requires changes to rc.conf files. 1510 For example, change: 1511 ifconfig_ath0="WPA DHCP" 1512 to 1513 wlans_ath0=wlan0 1514 ifconfig_wlan0="WPA DHCP" 1515 see rc.conf(5) for more details. In addition, mergemaster of 1516 /etc/rc.d is highly recommended. Simultaneous update of userland 1517 and kernel wouldn't hurt either. 1518 1519 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1520 modules were merged into the base wlan module. All references 1521 to these modules (e.g. in kernel config files) must be removed. 1522 152320080408: 1524 psm(4) has gained write(2) support in native operation level. 1525 Arbitrary commands can be written to /dev/psm%d and status can 1526 be read back from it. Therefore, an application is responsible 1527 for status validation and error recovery. It is a no-op in 1528 other operation levels. 1529 153020080312: 1531 Support for KSE threading has been removed from the kernel. To 1532 run legacy applications linked against KSE libmap.conf may 1533 be used. The following libmap.conf may be used to ensure 1534 compatibility with any prior release: 1535 1536 libpthread.so.1 libthr.so.1 1537 libpthread.so.2 libthr.so.2 1538 libkse.so.3 libthr.so.3 1539 154020080301: 1541 The layout of struct vmspace has changed. This affects libkvm 1542 and any executables that link against libkvm and use the 1543 kvm_getprocs() function. In particular, but not exclusively, 1544 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1545 The effects are minimal, but it's advisable to upgrade world 1546 nonetheless. 1547 154820080229: 1549 The latest em driver no longer has support in it for the 1550 82575 adapter, this is now moved to the igb driver. The 1551 split was done to make new features that are incompatible 1552 with older hardware easier to do. 1553 155420080220: 1555 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1556 likewise the kernel option is now GEOM_LINUX_LVM. 1557 155820080211: 1559 The default NFS mount mode has changed from UDP to TCP for 1560 increased reliability. If you rely on (insecurely) NFS 1561 mounting across a firewall you may need to update your 1562 firewall rules. 1563 156420080208: 1565 Belatedly note the addition of m_collapse for compacting 1566 mbuf chains. 1567 156820080126: 1569 The fts(3) structures have been changed to use adequate 1570 integer types for their members and so to be able to cope 1571 with huge file trees. The old fts(3) ABI is preserved 1572 through symbol versioning in libc, so third-party binaries 1573 using fts(3) should still work, although they will not take 1574 advantage of the extended types. At the same time, some 1575 third-party software might fail to build after this change 1576 due to unportable assumptions made in its source code about 1577 fts(3) structure members. Such software should be fixed 1578 by its vendor or, in the worst case, in the ports tree. 1579 FreeBSD_version 800015 marks this change for the unlikely 1580 case that a portable fix is impossible. 1581 158220080123: 1583 To upgrade to -current after this date, you must be running 1584 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1585 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1586 158720071128: 1588 The ADAPTIVE_GIANT kernel option has been retired because its 1589 functionality is the default now. 1590 159120071118: 1592 The AT keyboard emulation of sunkbd(4) has been turned on 1593 by default. In order to make the special symbols of the Sun 1594 keyboards driven by sunkbd(4) work under X these now have 1595 to be configured the same way as Sun USB keyboards driven 1596 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1597 1598 Option "XkbLayout" "us" 1599 Option "XkbRules" "xorg" 1600 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1601 160220071024: 1603 It has been decided that it is desirable to provide ABI 1604 backwards compatibility to the FreeBSD 4/5/6 versions of the 1605 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1606 broken with the introduction of PCI domain support (see the 1607 20070930 entry). Unfortunately, this required the ABI of 1608 PCIOCGETCONF to be broken again in order to be able to 1609 provide backwards compatibility to the old version of that 1610 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1611 again. As for prominent ports this affects neither pciutils 1612 nor xorg-server this time, the hal port needs to be rebuilt 1613 however. 1614 161520071020: 1616 The misnamed kthread_create() and friends have been renamed 1617 to kproc_create() etc. Many of the callers already 1618 used kproc_start().. 1619 I will return kthread_create() and friends in a while 1620 with implementations that actually create threads, not procs. 1621 Renaming corresponds with version 800002. 1622 162320071010: 1624 RELENG_7 branched. 1625 1626COMMON ITEMS: 1627 1628 General Notes 1629 ------------- 1630 Avoid using make -j when upgrading. While generally safe, there are 1631 sometimes problems using -j to upgrade. If your upgrade fails with 1632 -j, please try again without -j. From time to time in the past there 1633 have been problems using -j with buildworld and/or installworld. This 1634 is especially true when upgrading between "distant" versions (eg one 1635 that cross a major release boundary or several minor releases, or when 1636 several months have passed on the -current branch). 1637 1638 Sometimes, obscure build problems are the result of environment 1639 poisoning. This can happen because the make utility reads its 1640 environment when searching for values for global variables. To run 1641 your build attempts in an "environmental clean room", prefix all make 1642 commands with 'env -i '. See the env(1) manual page for more details. 1643 1644 When upgrading from one major version to another it is generally best 1645 to upgrade to the latest code in the currently installed branch first, 1646 then do an upgrade to the new branch. This is the best-tested upgrade 1647 path, and has the highest probability of being successful. Please try 1648 this approach before reporting problems with a major version upgrade. 1649 1650 ZFS notes 1651 --------- 1652 When upgrading the boot ZFS pool to a new version, always follow 1653 these two steps: 1654 1655 1.) recompile and reinstall the ZFS boot loader and boot block 1656 (this is part of "make buildworld" and "make installworld") 1657 1658 2.) update the ZFS boot block on your boot drive 1659 1660 The following example updates the ZFS boot block on the first 1661 partition (freebsd-boot) of a GPT partitioned drive ad0: 1662 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1663 1664 Non-boot pools do not need these updates. 1665 1666 To build a kernel 1667 ----------------- 1668 If you are updating from a prior version of FreeBSD (even one just 1669 a few days old), you should follow this procedure. It is the most 1670 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1671 1672 make kernel-toolchain 1673 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1674 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1675 1676 To test a kernel once 1677 --------------------- 1678 If you just want to boot a kernel once (because you are not sure 1679 if it works, or if you want to boot a known bad kernel to provide 1680 debugging information) run 1681 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1682 nextboot -k testkernel 1683 1684 To just build a kernel when you know that it won't mess you up 1685 -------------------------------------------------------------- 1686 This assumes you are already running a CURRENT system. Replace 1687 ${arch} with the architecture of your machine (e.g. "i386", 1688 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1689 1690 cd src/sys/${arch}/conf 1691 config KERNEL_NAME_HERE 1692 cd ../compile/KERNEL_NAME_HERE 1693 make depend 1694 make 1695 make install 1696 1697 If this fails, go to the "To build a kernel" section. 1698 1699 To rebuild everything and install it on the current system. 1700 ----------------------------------------------------------- 1701 # Note: sometimes if you are running current you gotta do more than 1702 # is listed here if you are upgrading from a really old current. 1703 1704 <make sure you have good level 0 dumps> 1705 make buildworld 1706 make kernel KERNCONF=YOUR_KERNEL_HERE 1707 [1] 1708 <reboot in single user> [3] 1709 mergemaster -p [5] 1710 make installworld 1711 mergemaster -i [4] 1712 make delete-old [6] 1713 <reboot> 1714 1715 1716 To cross-install current onto a separate partition 1717 -------------------------------------------------- 1718 # In this approach we use a separate partition to hold 1719 # current's root, 'usr', and 'var' directories. A partition 1720 # holding "/", "/usr" and "/var" should be about 2GB in 1721 # size. 1722 1723 <make sure you have good level 0 dumps> 1724 <boot into -stable> 1725 make buildworld 1726 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1727 <maybe newfs current's root partition> 1728 <mount current's root partition on directory ${CURRENT_ROOT}> 1729 make installworld DESTDIR=${CURRENT_ROOT} 1730 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1731 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1732 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1733 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1734 <reboot into current> 1735 <do a "native" rebuild/install as described in the previous section> 1736 <maybe install compatibility libraries from ports/misc/compat*> 1737 <reboot> 1738 1739 1740 To upgrade in-place from stable to current 1741 ---------------------------------------------- 1742 <make sure you have good level 0 dumps> 1743 make buildworld [9] 1744 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1745 [1] 1746 <reboot in single user> [3] 1747 mergemaster -p [5] 1748 make installworld 1749 mergemaster -i [4] 1750 make delete-old [6] 1751 <reboot> 1752 1753 Make sure that you've read the UPDATING file to understand the 1754 tweaks to various things you need. At this point in the life 1755 cycle of current, things change often and you are on your own 1756 to cope. The defaults can also change, so please read ALL of 1757 the UPDATING entries. 1758 1759 Also, if you are tracking -current, you must be subscribed to 1760 freebsd-current@freebsd.org. Make sure that before you update 1761 your sources that you have read and understood all the recent 1762 messages there. If in doubt, please track -stable which has 1763 much fewer pitfalls. 1764 1765 [1] If you have third party modules, such as vmware, you 1766 should disable them at this point so they don't crash your 1767 system on reboot. 1768 1769 [3] From the bootblocks, boot -s, and then do 1770 fsck -p 1771 mount -u / 1772 mount -a 1773 cd src 1774 adjkerntz -i # if CMOS is wall time 1775 Also, when doing a major release upgrade, it is required that 1776 you boot into single user mode to do the installworld. 1777 1778 [4] Note: This step is non-optional. Failure to do this step 1779 can result in a significant reduction in the functionality of the 1780 system. Attempting to do it by hand is not recommended and those 1781 that pursue this avenue should read this file carefully, as well 1782 as the archives of freebsd-current and freebsd-hackers mailing lists 1783 for potential gotchas. The -U option is also useful to consider. 1784 See mergemaster(8) for more information. 1785 1786 [5] Usually this step is a noop. However, from time to time 1787 you may need to do this if you get unknown user in the following 1788 step. It never hurts to do it all the time. You may need to 1789 install a new mergemaster (cd src/usr.sbin/mergemaster && make 1790 install) after the buildworld before this step if you last updated 1791 from [78]-stable or 9-stable before 20130430. 1792 1793 [6] This only deletes old files and directories. Old libraries 1794 can be deleted by "make delete-old-libs", but you have to make 1795 sure that no program is using those libraries anymore. 1796 1797 [8] In order to have a kernel that can run the 4.x binaries needed to 1798 do an installworld, you must include the COMPAT_FREEBSD4 option in 1799 your kernel. Failure to do so may leave you with a system that is 1800 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 1801 required to run the 5.x binaries on more recent kernels. And so on 1802 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 1803 1804 Make sure that you merge any new devices from GENERIC since the 1805 last time you updated your kernel config file. 1806 1807 [9] When checking out sources, you must include the -P flag to have 1808 cvs prune empty directories. 1809 1810 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 1811 "?=" instead of the "=" assignment operator, so that buildworld can 1812 override the CPUTYPE if it needs to. 1813 1814 MAKEOBJDIRPREFIX must be defined in an environment variable, and 1815 not on the command line, or in /etc/make.conf. buildworld will 1816 warn if it is improperly defined. 1817FORMAT: 1818 1819This file contains a list, in reverse chronological order, of major 1820breakages in tracking -current. It is not guaranteed to be a complete 1821list of such breakages, and only contains entries since October 10, 2007. 1822If you need to see UPDATING entries from before that date, you will need 1823to fetch an UPDATING file from an older FreeBSD release. 1824 1825Copyright information: 1826 1827Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 1828 1829Redistribution, publication, translation and use, with or without 1830modification, in full or in part, in any form or format of this 1831document are permitted without further permission from the author. 1832 1833THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 1834IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1835WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 1836DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 1837INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 1838(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 1839SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 1840HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 1841STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 1842IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1843POSSIBILITY OF SUCH DAMAGE. 1844 1845Contact Warner Losh if you have any questions about your use of 1846this document. 1847 1848$FreeBSD: releng/9.3/UPDATING 287410 2015-09-02 20:07:03Z delphij $ 1849