UPDATING revision 270905
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 14NOTE: FreeBSD has switched from gcc to clang. If you have trouble bootstrapping 15from older versions of FreeBSD, try WITHOUT_CLANG to bootstrap to the tip of 16stable/10, and then rebuild without this option. The bootstrap process from 17older version of current is a bit fragile. 18 1920140831: 20 The libatf-c and libatf-c++ major versions were downgraded to 0 and 21 1 respectively to match the upstream numbers. They were out of 22 sync because, when they were originally added to FreeBSD, the 23 upstream versions were not respected. These libraries are private 24 and not yet built by default, so renumbering them should be a 25 non-issue. However, unclean source trees will yield broken test 26 programs once the operator executes "make delete-old-libs" after a 27 "make installworld". 28 29 If you are using WITH_TESTS=yes (not the default), wipe the object 30 tree and rebuild from scratch to prevent spurious test failures. 31 This is only needed once: the old, misnumbered libraries have been 32 added to OptionalObsoleteFiles.inc so they will be removed during a 33 clean upgrade. 34 3520140814: 36 The ixgbe tunables now match their sysctl counterparts, for example: 37 hw.ixgbe.enable_aim => hw.ix.enable_aim 38 Anyone using ixgbe tunables should ensure they update /boot/loader.conf. 39 4020140801: 41 The NFSv4.1 server committed by r269398 changes the internal 42 function call interfaces used between the NFS and krpc modules. 43 As such, __FreeBSD_version was bumped. 44 4520140729: 46 The default unbound configuration has been modified to address 47 issues with reverse lookups on networks that use private 48 address ranges. If you use the local_unbound service, run 49 "service local_unbound setup" as root to regenerate your 50 configuration, then "service local_unbound reload" to load the 51 new configuration. 52 5320140717: 54 It is no longer necessary to include the dwarf version in your DEBUG 55 options in your kernel config file. The bug that required it to be 56 placed in the config file has bene fixed. DEBUG should now just 57 contain -g. The build system will automatically update things 58 to do the right thing. 59 6020140715: 61 Several ABI breaking changes were merged to CTL and new iSCSI code. 62 All CTL and iSCSI-related tools, such as ctladm, ctld, iscsid and 63 iscsictl need to be rebuilt to work with a new kernel. 64 6520140708: 66 The WITHOUT_VT_SUPPORT kernel config knob has been renamed 67 WITHOUT_VT. (The other _SUPPORT knobs have a consistent meaning 68 which differs from the behaviour controlled by this knob.) 69 7020140608: 71 On i386 and amd64 systems, the onifconsole flag is now set by default 72 in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled 73 as a login TTY if it is set in the bootloader as an active kernel 74 console. No changes in behavior should result otherwise. To revert to 75 the previous behavior, set ttyu0 to "off" in /etc/ttys. 76 7720140512: 78 Clang and llvm have been upgraded to 3.4.1 release. 79 8020140321: 81 Clang and llvm have been upgraded to 3.4 release. 82 8320140306: 84 If a Makefile in a tests/ directory was auto-generating a Kyuafile 85 instead of providing an explicit one, this would prevent such 86 Makefile from providing its own Kyuafile in the future during 87 NO_CLEAN builds. This has been fixed in the Makefiles but manual 88 intervention is needed to clean an objdir if you use NO_CLEAN: 89 # find /usr/obj -name Kyuafile | xargs rm -f 90 9120140303: 92 OpenSSH will now ignore errors caused by kernel lacking of Capsicum 93 capability mode support. Please note that enabling the feature in 94 kernel is still highly recommended. 95 9620140227: 97 OpenSSH is now built with sandbox support, and will use sandbox as 98 the default privilege separation method. This requires Capsicum 99 capability mode support in kernel. 100 10120140216: 102 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has 103 been deprecated and will not be part of FreeBSD 11.0 and later 104 releases. If you use this driver, please consider switching to 105 the nfe(4) driver instead. 106 10720140120: 108 10.0-RELEASE. 109 11020131216: 111 The behavior of gss_pseudo_random() for the krb5 mechanism 112 has changed, for applications requesting a longer random string 113 than produced by the underlying enctype's pseudo-random() function. 114 In particular, the random string produced from a session key of 115 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 116 be different at the 17th octet and later, after this change. 117 The counter used in the PRF+ construction is now encoded as a 118 big-endian integer in accordance with RFC 4402. 119 __FreeBSD_version is bumped to 1000701. 120 12120131108: 122 The WITHOUT_ATF build knob has been removed and its functionality 123 has been subsumed into the more generic WITHOUT_TESTS. If you were 124 using the former to disable the build of the ATF libraries, you 125 should change your settings to use the latter. 126 12720131031: 128 The default version of mtree is nmtree which is obtained from 129 NetBSD. The output is generally the same, but may vary 130 slightly. If you found you need identical output adding 131 "-F freebsd9" to the command line should do the trick. For the 132 time being, the old mtree is available as fmtree. 133 13420131014: 135 libbsdyml has been renamed to libyaml and moved to /usr/lib/private. 136 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg 137 1.1.4_8 and verify bsdyml not linked in, before running "make 138 delete-old-libs": 139 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean 140 or 141 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml 142 14320131010: 144 The rc.d/jail script has been updated to support jail(8) 145 configuration file. The "jail_<jname>_*" rc.conf(5) variables 146 for per-jail configuration are automatically converted to 147 /var/run/jail.<jname>.conf before the jail(8) utility is invoked. 148 This is transparently backward compatible. See below about some 149 incompatibilities and rc.conf(5) manual page for more details. 150 151 These variables are now deprecated in favor of jail(8) configuration 152 file. One can use "rc.d/jail config <jname>" command to generate 153 a jail(8) configuration file in /var/run/jail.<jname>.conf without 154 running the jail(8) utility. The default pathname of the 155 configuration file is /etc/jail.conf and can be specified by 156 using $jail_conf or $jail_<jname>_conf variables. 157 158 Please note that jail_devfs_ruleset accepts an integer at 159 this moment. Please consider to rewrite the ruleset name 160 with an integer. 161 16220130930: 163 BIND has been removed from the base system. If all you need 164 is a local resolver, simply enable and start the local_unbound 165 service instead. Otherwise, several versions of BIND are 166 available in the ports tree. The dns/bind99 port is one example. 167 168 With this change, nslookup(1) and dig(1) are no longer in the base 169 system. Users should instead use host(1) and drill(1) which are 170 in the base system. Alternatively, nslookup and dig can 171 be obtained by installing the dns/bind-tools port. 172 17320130916: 174 With the addition of unbound(8), a new unbound user is now 175 required during installworld. "mergemaster -p" can be used to 176 add the user prior to installworld, as documented in the handbook. 177 17820130911: 179 OpenSSH is now built with DNSSEC support, and will by default 180 silently trust signed SSHFP records. This can be controlled with 181 the VerifyHostKeyDNS client configuration setting. DNSSEC support 182 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 183 18420130906: 185 The GNU Compiler Collection and C++ standard library (libstdc++) 186 are no longer built by default on platforms where clang is the system 187 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 188 options in src.conf. 189 19020130905: 191 The PROCDESC kernel option is now part of the GENERIC kernel 192 configuration and is required for the rwhod(8) to work. 193 If you are using custom kernel configuration, you should include 194 'options PROCDESC'. 195 19620130905: 197 The API and ABI related to the Capsicum framework was modified 198 in backward incompatible way. The userland libraries and programs 199 have to be recompiled to work with the new kernel. This includes the 200 following libraries and programs, but the whole buildworld is 201 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 202 kdump, procstat, rwho, rwhod, uniq. 203 20420130903: 205 AES-NI intrinsic support has been added to gcc. The AES-NI module 206 has been updated to use this support. A new gcc is required to build 207 the aesni module on both i386 and amd64. 208 20920130821: 210 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 211 Thus "device padlock_rng" and "device rdrand_rng" should be 212 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 213 21420130813: 215 WITH_ICONV has been split into two feature sets. WITH_ICONV now 216 enables just the iconv* functionality and is now on by default. 217 WITH_LIBICONV_COMPAT enables the libiconv api and link time 218 compatability. Set WITHOUT_ICONV to build the old way. 219 If you have been using WITH_ICONV before, you will very likely 220 need to turn on WITH_LIBICONV_COMPAT. 221 22220130806: 223 INVARIANTS option now enables DEBUG for code with OpenSolaris and 224 Illumos origin, including ZFS. If you have INVARIANTS in your 225 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 226 explicitly. 227 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 228 locks if WITNESS option was set. Because that generated a lot of 229 witness(9) reports and all of them were believed to be false 230 positives, this is no longer done. New option OPENSOLARIS_WITNESS 231 can be used to achieve the previous behavior. 232 23320130806: 234 Timer values in IPv6 data structures now use time_uptime instead 235 of time_second. Although this is not a user-visible functional 236 change, userland utilities which directly use them---ndp(8), 237 rtadvd(8), and rtsold(8) in the base system---need to be updated 238 to r253970 or later. 239 24020130802: 241 find -delete can now delete the pathnames given as arguments, 242 instead of only files found below them or if the pathname did 243 not contain any slashes. Formerly, the following error message 244 would result: 245 246 find: -delete: <path>: relative path potentially not safe 247 248 Deleting the pathnames given as arguments can be prevented 249 without error messages using -mindepth 1 or by changing 250 directory and passing "." as argument to find. This works in the 251 old as well as the new version of find. 252 25320130726: 254 Behavior of devfs rules path matching has been changed. 255 Pattern is now always matched against fully qualified devfs 256 path and slash characters must be explicitly matched by 257 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 258 subdirectories must be reviewed. 259 26020130716: 261 The default ARM ABI has changed to the ARM EABI. The old ABI is 262 incompatible with the ARM EABI and all programs and modules will 263 need to be rebuilt to work with a new kernel. 264 265 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 266 267 NOTE: Support for the old ABI will be removed in the future and 268 users are advised to upgrade. 269 27020130709: 271 pkg_install has been disconnected from the build if you really need it 272 you should add WITH_PKGTOOLS in your src.conf(5). 273 27420130709: 275 Most of network statistics structures were changed to be able 276 keep 64-bits counters. Thus all tools, that work with networking 277 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 278 27920130629: 280 Fix targets that run multiple make's to use && rather than ; 281 so that subsequent steps depend on success of previous. 282 283 NOTE: if building 'universe' with -j* on stable/8 or stable/9 284 it would be better to start the build using bmake, to avoid 285 overloading the machine. 286 28720130618: 288 Fix a bug that allowed a tracing process (e.g. gdb) to write 289 to a memory-mapped file in the traced process's address space 290 even if neither the traced process nor the tracing process had 291 write access to that file. 292 29320130615: 294 CVS has been removed from the base system. An exact copy 295 of the code is available from the devel/cvs port. 296 29720130613: 298 Some people report the following error after the switch to bmake: 299 300 make: illegal option -- J 301 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 302 ... 303 *** [buildworld] Error code 2 304 305 this likely due to an old instance of make in 306 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 307 which src/Makefile will use that blindly, if it exists, so if 308 you see the above error: 309 310 rm -rf `make -V MAKEPATH` 311 312 should resolve it. 313 31420130516: 315 Use bmake by default. 316 Whereas before one could choose to build with bmake via 317 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 318 make. The goal is to remove these knobs for 10-RELEASE. 319 320 It is worth noting that bmake (like gmake) treats the command 321 line as the unit of failure, rather than statements within the 322 command line. Thus '(cd some/where && dosomething)' is safer 323 than 'cd some/where; dosomething'. The '()' allows consistent 324 behavior in parallel build. 325 32620130429: 327 Fix a bug that allows NFS clients to issue READDIR on files. 328 32920130426: 330 The WITHOUT_IDEA option has been removed because 331 the IDEA patent expired. 332 33320130426: 334 The sysctl which controls TRIM support under ZFS has been renamed 335 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 336 enabled by default. 337 33820130425: 339 The mergemaster command now uses the default MAKEOBJDIRPREFIX 340 rather than creating it's own in the temporary directory in 341 order allow access to bootstrapped versions of tools such as 342 install and mtree. When upgrading from version of FreeBSD where 343 the install command does not support -l, you will need to 344 install a new mergemaster command if mergemaster -p is required. 345 This can be accomplished with the command (cd src/usr.sbin/mergemaster 346 && make install). 347 34820130404: 349 Legacy ATA stack, disabled and replaced by new CAM-based one since 350 FreeBSD 9.0, completely removed from the sources. Kernel modules 351 atadisk and atapi*, user-level tools atacontrol and burncd are 352 removed. Kernel option `options ATA_CAM` is now permanently enabled 353 and removed. 354 35520130319: 356 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 357 and socketpair(2). Software, in particular Kerberos, may 358 automatically detect and use these during building. The resulting 359 binaries will not work on older kernels. 360 36120130308: 362 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 363 information, see the respective 20130304 entry). 364 36520130304: 366 Recent commits to callout(9) changed the size of struct callout, 367 so the KBI is probably heavily disturbed. Also, some functions 368 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 369 by macros. Every kernel module using it won't load, so rebuild 370 is requested. 371 372 The ctl device has been re-enabled in GENERIC for i386 and amd64, 373 but does not initialize by default (because of the new CTL_DISABLE 374 option) to save memory. To re-enable it, remove the CTL_DISABLE 375 option from the kernel config file or set kern.cam.ctl.disable=0 376 in /boot/loader.conf. 377 37820130301: 379 The ctl device has been disabled in GENERIC for i386 and amd64. 380 This was done due to the extra memory being allocated at system 381 initialisation time by the ctl driver which was only used if 382 a CAM target device was created. This makes a FreeBSD system 383 unusable on 128MB or less of RAM. 384 38520130208: 386 A new compression method (lz4) has been merged to -HEAD. Please 387 refer to zpool-features(7) for more information. 388 389 Please refer to the "ZFS notes" section of this file for information 390 on upgrading boot ZFS pools. 391 39220130129: 393 A BSD-licensed patch(1) variant has been added and is installed 394 as bsdpatch, being the GNU version the default patch. 395 To inverse the logic and use the BSD-licensed one as default, 396 while having the GNU version installed as gnupatch, rebuild 397 and install world with the WITH_BSD_PATCH knob set. 398 39920130121: 400 Due to the use of the new -l option to install(1) during build 401 and install, you must take care not to directly set the INSTALL 402 make variable in your /etc/make.conf, /etc/src.conf, or on the 403 command line. If you wish to use the -C flag for all installs 404 you may be able to add INSTALL+=-C to /etc/make.conf or 405 /etc/src.conf. 406 40720130118: 408 The install(1) option -M has changed meaning and now takes an 409 argument that is a file or path to append logs to. In the 410 unlikely event that -M was the last option on the command line 411 and the command line contained at least two files and a target 412 directory the first file will have logs appended to it. The -M 413 option served little practical purpose in the last decade so its 414 use is expected to be extremely rare. 415 41620121223: 417 After switching to Clang as the default compiler some users of ZFS 418 on i386 systems started to experience stack overflow kernel panics. 419 Please consider using 'options KSTACK_PAGES=4' in such configurations. 420 42120121222: 422 GEOM_LABEL now mangles label names read from file system metadata. 423 Mangling affect labels containing spaces, non-printable characters, 424 '%' or '"'. Device names in /etc/fstab and other places may need to 425 be updated. 426 42720121217: 428 By default, only the 10 most recent kernel dumps will be saved. To 429 restore the previous behaviour (no limit on the number of kernel dumps 430 stored in the dump directory) add the following line to /etc/rc.conf: 431 432 savecore_flags="" 433 43420121201: 435 With the addition of auditdistd(8), a new auditdistd user is now 436 required during installworld. "mergemaster -p" can be used to 437 add the user prior to installworld, as documented in the handbook. 438 43920121117: 440 The sin6_scope_id member variable in struct sockaddr_in6 is now 441 filled by the kernel before passing the structure to the userland via 442 sysctl or routing socket. This means the KAME-specific embedded scope 443 id in sin6_addr.s6_addr[2] is always cleared in userland application. 444 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 445 __FreeBSD_version is bumped to 1000025. 446 44720121105: 448 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 449 This means that the world and kernel will be compiled with clang 450 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 451 and /usr/bin/cpp. To disable this behavior and revert to building 452 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 453 of current may need to bootstrap WITHOUT_CLANG first if the clang 454 build fails (its compatibility window doesn't extend to the 9 stable 455 branch point). 456 45720121102: 458 The IPFIREWALL_FORWARD kernel option has been removed. Its 459 functionality now turned on by default. 460 46120121023: 462 The ZERO_COPY_SOCKET kernel option has been removed and 463 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 464 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 465 mechanism which is not safe and may result in kernel crashes. 466 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 467 driver supports disposeable external page sized mbuf storage. 468 Proper replacements for both zero-copy mechanisms are under 469 consideration and will eventually lead to complete removal 470 of the two kernel options. 471 47220121023: 473 The IPv4 network stack has been converted to network byte 474 order. The following modules need to be recompiled together 475 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 476 pf(4), ipfw(4), ng_ipfw(4), stf(4). 477 47820121022: 479 Support for non-MPSAFE filesystems was removed from VFS. The 480 VFS_VERSION was bumped, all filesystem modules shall be 481 recompiled. 482 48320121018: 484 All the non-MPSAFE filesystems have been disconnected from 485 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 486 portalfs, smbfs, xfs. 487 48820121016: 489 The interface cloning API and ABI has changed. The following 490 modules need to be recompiled together with kernel: 491 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 492 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 493 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 494 49520121015: 496 The sdhci driver was split in two parts: sdhci (generic SD Host 497 Controller logic) and sdhci_pci (actual hardware driver). 498 No kernel config modifications are required, but if you 499 load sdhc as a module you must switch to sdhci_pci instead. 500 50120121014: 502 Import the FUSE kernel and userland support into base system. 503 50420121013: 505 The GNU sort(1) program has been removed since the BSD-licensed 506 sort(1) has been the default for quite some time and no serious 507 problems have been reported. The corresponding WITH_GNU_SORT 508 knob has also gone. 509 51020121006: 511 The pfil(9) API/ABI for AF_INET family has been changed. Packet 512 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 513 with new kernel. 514 51520121001: 516 The net80211(4) ABI has been changed to allow for improved driver 517 PS-POLL and power-save support. All wireless drivers need to be 518 recompiled to work with the new kernel. 519 52020120913: 521 The random(4) support for the VIA hardware random number 522 generator (`PADLOCK') is no longer enabled unconditionally. 523 Add the padlock_rng device in the custom kernel config if 524 needed. The GENERIC kernels on i386 and amd64 do include the 525 device, so the change only affects the custom kernel 526 configurations. 527 52820120908: 529 The pf(4) packet filter ABI has been changed. pfctl(8) and 530 snmp_pf module need to be recompiled to work with new kernel. 531 53220120828: 533 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 534 to -HEAD. Pools that have empty_bpobj in active state can not be 535 imported read-write with ZFS implementations that do not support 536 this feature. For more information read the zpool-features(5) 537 manual page. 538 53920120727: 540 The sparc64 ZFS loader has been changed to no longer try to auto- 541 detect ZFS providers based on diskN aliases but now requires these 542 to be explicitly listed in the OFW boot-device environment variable. 543 54420120712: 545 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 546 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 547 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 548 54920120712: 550 The following sysctls and tunables have been renamed for consistency 551 with other variables: 552 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 553 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 554 55520120628: 556 The sort utility has been replaced with BSD sort. For now, GNU sort 557 is also available as "gnusort" or the default can be set back to 558 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 559 installed as "bsdsort". 560 56120120611: 562 A new version of ZFS (pool version 5000) has been merged to -HEAD. 563 Starting with this version the old system of ZFS pool versioning 564 is superseded by "feature flags". This concept enables forward 565 compatibility against certain future changes in functionality of ZFS 566 pools. The first read-only compatible "feature flag" for ZFS pools 567 is named "com.delphix:async_destroy". For more information 568 read the new zpool-features(5) manual page. 569 Please refer to the "ZFS notes" section of this file for information 570 on upgrading boot ZFS pools. 571 57220120417: 573 The malloc(3) implementation embedded in libc now uses sources imported 574 as contrib/jemalloc. The most disruptive API change is to 575 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 576 delete it prior to installworld, and optionally re-create it using the 577 new format after rebooting. See malloc.conf(5) for details 578 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 579 NAMESPACE section). 580 58120120328: 582 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 583 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 584 now spelled mips. This is to aid compatibility with third-party 585 software that expects this naming scheme in uname(3). Little-endian 586 settings are unchanged. If you are updating a big-endian mips64 machine 587 from before this change, you may need to set MACHINE_ARCH=mips64 in 588 your environment before the new build system will recognize your machine. 589 59020120306: 591 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 592 platforms. 593 59420120229: 595 Now unix domain sockets behave "as expected" on nullfs(5). Previously 596 nullfs(5) did not pass through all behaviours to the underlying layer, 597 as a result if we bound to a socket on the lower layer we could connect 598 only to the lower path; if we bound to the upper layer we could connect 599 only to the upper path. The new behavior is one can connect to both the 600 lower and the upper paths regardless what layer path one binds to. 601 60220120211: 603 The getifaddrs upgrade path broken with 20111215 has been restored. 604 If you have upgraded in between 20111215 and 20120209 you need to 605 recompile libc again with your kernel. You still need to recompile 606 world to be able to configure CARP but this restriction already 607 comes from 20111215. 608 60920120114: 610 The set_rcvar() function has been removed from /etc/rc.subr. All 611 base and ports rc.d scripts have been updated, so if you have a 612 port installed with a script in /usr/local/etc/rc.d you can either 613 hand-edit the rcvar= line, or reinstall the port. 614 615 An easy way to handle the mass-update of /etc/rc.d: 616 rm /etc/rc.d/* && mergemaster -i 617 61820120109: 619 panic(9) now stops other CPUs in the SMP systems, disables interrupts 620 on the current CPU and prevents other threads from running. 621 This behavior can be reverted using the kern.stop_scheduler_on_panic 622 tunable/sysctl. 623 The new behavior can be incompatible with kern.sync_on_panic. 624 62520111215: 626 The carp(4) facility has been changed significantly. Configuration 627 of the CARP protocol via ifconfig(8) has changed, as well as format 628 of CARP events submitted to devd(8) has changed. See manual pages 629 for more information. The arpbalance feature of carp(4) is currently 630 not supported anymore. 631 632 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 633 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 634 need to be recompiled. 635 63620111122: 637 The acpi_wmi(4) status device /dev/wmistat has been renamed to 638 /dev/wmistat0. 639 64020111108: 641 The option VFS_ALLOW_NONMPSAFE option has been added in order to 642 explicitely support non-MPSAFE filesystems. 643 It is on by default for all supported platform at this present 644 time. 645 64620111101: 647 The broken amd(4) driver has been replaced with esp(4) in the amd64, 648 i386 and pc98 GENERIC kernel configuration files. 649 65020110930: 651 sysinstall has been removed 652 65320110923: 654 The stable/9 branch created in subversion. This corresponds to the 655 RELENG_9 branch in CVS. 656 65720110913: 658 This commit modifies vfs_register() so that it uses a hash 659 calculation to set vfc_typenum, which is enabled by default. 660 The first time a system is booted after this change, the 661 vfc_typenum values will change for all file systems. The 662 main effect of this is a change to the NFS server file handles 663 for file systems that use vfc_typenum in their fsid, such as ZFS. 664 It will, however, prevent vfc_typenum from changing when file 665 systems are loaded in a different order for subsequent reboots. 666 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 667 until you are ready to remount all NFS clients after a reboot. 668 66920110828: 670 Bump the shared library version numbers for libraries that 671 do not use symbol versioning, have changed the ABI compared 672 to stable/8 and which shared library version was not bumped. 673 Done as part of 9.0-RELEASE cycle. 674 67520110815: 676 During the merge of Capsicum features, the fget(9) KPI was modified. 677 This may require the rebuilding of out-of-tree device drivers -- 678 issues have been reported specifically with the nVidia device driver. 679 __FreeBSD_version is bumped to 900041. 680 681 Also, there is a period between 20110811 and 20110814 where the 682 special devices /dev/{stdin,stdout,stderr} did not work correctly. 683 Building world from a kernel during that window may not work. 684 68520110628: 686 The packet filter (pf) code has been updated to OpenBSD 4.5. 687 You need to update userland tools to be in sync with kernel. 688 This update breaks backward compatibility with earlier pfsync(4) 689 versions. Care must be taken when updating redundant firewall setups. 690 69120110608: 692 The following sysctls and tunables are retired on x86 platforms: 693 machdep.hlt_cpus 694 machdep.hlt_logical_cpus 695 The following sysctl is retired: 696 machdep.hyperthreading_allowed 697 The sysctls were supposed to provide a way to dynamically offline and 698 online selected CPUs on x86 platforms, but the implementation has not 699 been reliable especially with SCHED_ULE scheduler. 700 machdep.hyperthreading_allowed tunable is still available to ignore 701 hyperthreading CPUs at OS level. 702 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 703 where X is an APIC ID of a CPU. Be advised, though, that disabling 704 CPUs in non-uniform fashion will result in non-uniform topology and 705 may lead to sub-optimal system performance with SCHED_ULE, which is 706 a default scheduler. 707 70820110607: 709 cpumask_t type is retired and cpuset_t is used in order to describe 710 a mask of CPUs. 711 71220110531: 713 Changes to ifconfig(8) for dynamic address family detection mandate 714 that you are running a kernel of 20110525 or later. Make sure to 715 follow the update procedure to boot a new kernel before installing 716 world. 717 71820110513: 719 Support for sun4v architecture is officially dropped 720 72120110503: 722 Several KPI breaking changes have been committed to the mii(4) layer, 723 the PHY drivers and consequently some Ethernet drivers using mii(4). 724 This means that miibus.ko and the modules of the affected Ethernet 725 drivers need to be recompiled. 726 727 Note to kernel developers: Given that the OUI bit reversion problem 728 was fixed as part of these changes all mii(4) commits related to OUIs, 729 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 730 handling, no longer can be merged verbatim to stable/8 and previous 731 branches. 732 73320110430: 734 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 735 into their kernel configurations along with 'device pci'. 736 73720110427: 738 The default NFS client is now the new NFS client, so fstype "newnfs" 739 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 740 Although mounts via fstype "nfs" will usually work without userland 741 changes, it is recommended that the mount(8) and mount_nfs(8) 742 commands be rebuilt from sources and that a link to mount_nfs called 743 mount_oldnfs be created. The new client is compiled into the 744 kernel with "options NFSCL" and this is needed for diskless root 745 file systems. The GENERIC kernel configs have been changed to use 746 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 747 To use the regular/old client, you can "mount -t oldnfs ...". For 748 a diskless root file system, you must also include a line like: 749 750 vfs.root.mountfrom="oldnfs:" 751 752 in the boot/loader.conf on the root fs on the NFS server to make 753 a diskless root fs use the old client. 754 75520110424: 756 The GENERIC kernels for all architectures now default to the new 757 CAM-based ATA stack. It means that all legacy ATA drivers were 758 removed and replaced by respective CAM drivers. If you are using 759 ATA device names in /etc/fstab or other places, make sure to update 760 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 761 where 'Y's are the sequential numbers starting from zero for each type 762 in order of detection, unless configured otherwise with tunables, 763 see cam(4)). There will be symbolic links created in /dev/ to map 764 old adX devices to the respective adaY. They should provide basic 765 compatibility for file systems mounting in most cases, but they do 766 not support old user-level APIs and do not have respective providers 767 in GEOM. Consider using updated management tools with new device names. 768 769 It is possible to load devices ahci, ata, siis and mvs as modules, 770 but option ATA_CAM should remain in kernel configuration to make ata 771 module work as CAM driver supporting legacy ATA controllers. Device ata 772 still can be used in modular fashion (atacore + ...). Modules atadisk 773 and atapi* are not used and won't affect operation in ATA_CAM mode. 774 Note that to use CAM-based ATA kernel should include CAM devices 775 scbus, pass, da (or explicitly ada), cd and optionally others. All of 776 them are parts of the cam module. 777 778 ataraid(4) functionality is now supported by the RAID GEOM class. 779 To use it you can load geom_raid kernel module and use graid(8) tool 780 for management. Instead of /dev/arX device names, use /dev/raid/rX. 781 782 No kernel config options or code have been removed, so if a problem 783 arises, please report it and optionally revert to the old ATA stack. 784 In order to do it you can remove from the kernel config: 785 options ATA_CAM 786 device ahci 787 device mvs 788 device siis 789 , and instead add back: 790 device atadisk # ATA disk drives 791 device ataraid # ATA RAID drives 792 device atapicd # ATAPI CDROM drives 793 device atapifd # ATAPI floppy drives 794 device atapist # ATAPI tape drives 795 79620110423: 797 The default NFS server has been changed to the new server, which 798 was referred to as the experimental server. If you need to switch 799 back to the old NFS server, you must now put the "-o" option on 800 both the mountd and nfsd commands. This can be done using the 801 mountd_flags and nfs_server_flags rc.conf variables until an 802 update to the rc scripts is committed, which is coming soon. 803 80420110418: 805 The GNU Objective-C runtime library (libobjc), and other Objective-C 806 related components have been removed from the base system. If you 807 require an Objective-C library, please use one of the available ports. 808 80920110331: 810 ath(4) has been split into bus- and device- modules. if_ath contains 811 the HAL, the TX rate control and the network device code. if_ath_pci 812 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 813 contains the AHB glue. Users need to load both if_ath_pci and if_ath 814 in order to use ath on everything else. 815 816 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 817 need to load if_ath and if_ath_pci for ath(4) operation. 818 81920110314: 820 As part of the replacement of sysinstall, the process of building 821 release media has changed significantly. For details, please re-read 822 release(7), which has been updated to reflect the new build process. 823 82420110218: 825 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 826 is the last available version under GPLv2. It brings a number of new 827 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 828 4.1 and SSE 4.2), better support for powerpc64, a number of new 829 directives, and lots of other small improvements. See the ChangeLog 830 file in contrib/binutils for the full details. 831 83220110218: 833 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 834 compliant, and will now use half of hash for authentication. 835 This will break interoperability with all stacks (including all 836 actual FreeBSD versions) who implement 837 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 838 authentication). 839 The only workaround with such peers is to use another HMAC 840 algorithm for IPsec ("phase 2") authentication. 841 84220110207: 843 Remove the uio_yield prototype and symbol. This function has 844 been misnamed since it was introduced and should not be 845 globally exposed with this name. The equivalent functionality 846 is now available using kern_yield(curthread->td_user_pri). 847 The function remains undocumented. 848 84920110112: 850 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 851 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 852 for scalar sysctls is defined but disabled. Code that needs 853 UQUAD to pass the type checking that must compile on older 854 systems where the define is not present can check against 855 __FreeBSD_version >= 900030. 856 857 The system dialog(1) has been replaced with a new version previously 858 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 859 with the previous version, but the libdialog associated with it has 860 a largely incompatible API. As such, the original version of libdialog 861 will be kept temporarily as libodialog, until its base system consumers 862 are replaced or updated. Bump __FreeBSD_version to 900030. 863 86420110103: 865 If you are trying to run make universe on a -stable system, and you get 866 the following warning: 867 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 868 unknown. config(8) likely too old." 869 or something similar to it, then you must upgrade your -stable system 870 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 871 stable/8) or build the config from the latest stable/8 branch and 872 install it on your system. 873 874 Prior to this date, building a current universe on 8-stable system from 875 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 876 error in the first kernel build phase. A new config on those old 877 systems will fix that problem for older versions of -current. 878 87920101228: 880 The TCP stack has been modified to allow Khelp modules to interact with 881 it via helper hook points and store per-connection data in the TCP 882 control block. Bump __FreeBSD_version to 900029. User space tools that 883 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 884 be recompiled. 885 88620101114: 887 Generic IEEE 802.3 annex 31B full duplex flow control support has been 888 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 889 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 890 to take advantage of it instead of using custom implementations. This 891 means that these drivers now no longer unconditionally advertise 892 support for flow control but only do so if flow control is a selected 893 media option. This was implemented in the generic support that way in 894 order to allow flow control to be switched on and off via ifconfig(8) 895 with the PHY specific default to typically off in order to protect 896 from unwanted effects. Consequently, if you used flow control with 897 one of the above mentioned drivers you now need to explicitly enable 898 it, for example via: 899 ifconfig bge0 media auto mediaopt flowcontrol 900 901 Along with the above mentioned changes generic support for setting 902 1000baseT master mode also has been added and brgphy(4), ciphy(4), 903 e1000phy(4) as well as ip1000phy(4) have been converted to take 904 advantage of it. This means that these drivers now no longer take the 905 link0 parameter for selecting master mode but the master media option 906 has to be used instead, for example like in the following: 907 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 908 909 Selection of master mode now is also available with all other PHY 910 drivers supporting 1000baseT. 911 91220101111: 913 The TCP stack has received a significant update to add support for 914 modularised congestion control and generally improve the clarity of 915 congestion control decisions. Bump __FreeBSD_version to 900025. User 916 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 917 sockstat) need to be recompiled. 918 91920101002: 920 The man(1) utility has been replaced by a new version that no longer 921 uses /etc/manpath.config. Please consult man.conf(5) for how to 922 migrate local entries to the new format. 923 92420100928: 925 The copyright strings printed by login(1) and sshd(8) at the time of a 926 new connection have been removed to follow other operating systems and 927 upstream sshd. 928 92920100915: 930 A workaround for a fixed ld bug has been removed in kernel code, 931 so make sure that your system ld is built from sources after 932 revision 210245 from 2010-07-19 (r211583 if building head kernel 933 on stable/8, r211584 for stable/7; both from 2010-08-21). 934 A symptom of incorrect ld version is different addresses for 935 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 936 93720100913: 938 The $ipv6_prefer variable in rc.conf(5) has been split into 939 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 940 941 The $ip6addrctl_policy is a variable to choose a pre-defined 942 address selection policy set by ip6addrctl(8). A value 943 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 944 default is "AUTO". 945 946 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 947 flag (see an entry of 20090926) is set on an interface with no 948 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 949 security reason. If you want IPv6 link-local address on all 950 interfaces by default, set this to "YES". 951 952 The old ipv6_prefer="YES" is equivalent to 953 ipv6_activate_all_interfaces="YES" and 954 ip6addrctl_policy="ipv6_prefer". 955 95620100913: 957 DTrace has grown support for userland tracing. Due to this, DTrace is 958 now i386 and amd64 only. 959 dtruss(1) is now installed by default on those systems and a new 960 kernel module is needed for userland tracing: fasttrap. 961 No changes to your kernel config file are necessary to enable 962 userland tracing, but you might consider adding 'STRIP=' and 963 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 964 to have informative userland stack traces in DTrace (ustack). 965 96620100725: 967 The acpi_aiboost(4) driver has been removed in favor of the new 968 aibs(4) driver. You should update your kernel configuration file. 969 97020100722: 971 BSD grep has been imported to the base system and it is built by 972 default. It is completely BSD licensed, highly GNU-compatible, uses 973 less memory than its GNU counterpart and has a small codebase. 974 However, it is slower than its GNU counterpart, which is mostly 975 noticeable for larger searches, for smaller ones it is measurable 976 but not significant. The reason is complex, the most important factor 977 is that we lack a modern and efficient regex library and GNU 978 overcomes this by optimizing the searches internally. Future work 979 on improving the regex performance is planned, for the meantime, 980 users that need better performance, can build GNU grep instead by 981 setting the WITH_GNU_GREP knob. 982 98320100713: 984 Due to the import of powerpc64 support, all existing powerpc kernel 985 configuration files must be updated with a machine directive like this: 986 machine powerpc powerpc 987 988 In addition, an updated config(8) is required to build powerpc kernels 989 after this change. 990 99120100713: 992 A new version of ZFS (version 15) has been merged to -HEAD. 993 This version uses a python library for the following subcommands: 994 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 995 For full functionality of these commands the following port must 996 be installed: sysutils/py-zfs 997 99820100429: 999 'vm_page's are now hashed by physical address to an array of mutexes. 1000 Currently this is only used to serialize access to hold_count. Over 1001 time the page queue mutex will be peeled away. This changes the size 1002 of pmap on every architecture. And requires all callers of vm_page_hold 1003 and vm_page_unhold to be updated. 1004 100520100402: 1006 WITH_CTF can now be specified in src.conf (not recommended, there 1007 are some problems with static executables), make.conf (would also 1008 affect ports which do not use GNU make and do not override the 1009 compile targets) or in the kernel config (via "makeoptions 1010 WITH_CTF=yes"). 1011 When WITH_CTF was specified there before this was silently ignored, 1012 so make sure that WITH_CTF is not used in places which could lead 1013 to unwanted behavior. 1014 101520100311: 1016 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 1017 to allow 32-bit compatibility on non-x86 platforms. All kernel 1018 configurations on amd64 and ia64 platforms using these options must 1019 be modified accordingly. 1020 102120100113: 1022 The utmp user accounting database has been replaced with utmpx, 1023 the user accounting interface standardized by POSIX. 1024 Unfortunately the semantics of utmp and utmpx don't match, 1025 making it practically impossible to support both interfaces. 1026 The user accounting database is used by tools like finger(1), 1027 last(1), talk(1), w(1) and ac(8). 1028 1029 All applications in the base system use utmpx. This means only 1030 local binaries (e.g. from the ports tree) may still use these 1031 utmp database files. These applications must be rebuilt to make 1032 use of utmpx. 1033 1034 After the system has been upgraded, it is safe to remove the old 1035 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 1036 assuming their contents is of no importance anymore. Old wtmp 1037 databases can only be used by last(1) and ac(8) after they have 1038 been converted to the new format using wtmpcvt(1). 1039 104020100108: 1041 Introduce the kernel thread "deadlock resolver" (which can be enabled 1042 via the DEADLKRES option, see NOTES for more details) and the 1043 sleepq_type() function for sleepqueues. 1044 104520091202: 1046 The rc.firewall and rc.firewall6 were unified, and 1047 rc.firewall6 and rc.d/ip6fw were removed. 1048 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 1049 variables are obsoleted. Instead, the following new rc 1050 variables are added to rc.d/ipfw: 1051 1052 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 1053 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 1054 firewall_simple_onet_ipv6, firewall_trusted_ipv6 1055 1056 The meanings correspond to the relevant IPv4 variables. 1057 105820091125: 1059 8.0-RELEASE. 1060 106120091113: 1062 The default terminal emulation for syscons(4) has been changed 1063 from cons25 to xterm on all platforms except pc98. This means 1064 that the /etc/ttys file needs to be updated to ensure correct 1065 operation of applications on the console. 1066 1067 The terminal emulation style can be toggled per window by using 1068 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 1069 options can be used to change the compile-time default back to 1070 cons25. 1071 1072 To prevent graphical artifacts, make sure the TERM environment 1073 variable is set to match the terminal emulation that is being 1074 performed by syscons(4). 1075 107620091109: 1077 The layout of the structure ieee80211req_scan_result has changed. 1078 Applications that require wireless scan results (e.g. ifconfig(8)) 1079 from net80211 need to be recompiled. 1080 1081 Applications such as wpa_supplicant(8) may require a full world 1082 build without using NO_CLEAN in order to get synchronized with the 1083 new structure. 1084 108520091025: 1086 The iwn(4) driver has been updated to support the 5000 and 5150 series. 1087 There's one kernel module for each firmware. Adding "device iwnfw" 1088 to the kernel configuration file means including all three firmware 1089 images inside the kernel. If you want to include just the one for 1090 your wireless card, use the devices iwn4965fw, iwn5000fw or 1091 iwn5150fw. 1092 109320090926: 1094 The rc.d/network_ipv6, IPv6 configuration script has been integrated 1095 into rc.d/netif. The changes are the following: 1096 1097 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 1098 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 1099 Note that both variables need the "inet6" keyword at the head. 1100 1101 Do not set $ipv6_network_interfaces manually if you do not 1102 understand what you are doing. It is not needed in most cases. 1103 1104 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 1105 they are obsolete. 1106 1107 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 1108 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 1109 1110 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 1111 all configured interfaces have "inet6 accept_rtadv" in the 1112 $ifconfig_IF_ipv6. These are for backward compatibility. 1113 1114 3. A new variable $ipv6_prefer has been added. If NO, IPv6 1115 functionality of interfaces with no corresponding 1116 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 1117 and the default address selection policy of ip6addrctl(8) 1118 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 1119 Note that if you want to configure IPv6 functionality on the 1120 disabled interfaces after boot, first you need to clear the flag by 1121 using ifconfig(8) like: 1122 1123 ifconfig em0 inet6 -ifdisabled 1124 1125 If YES, the default address selection policy is set as 1126 IPv6-preferred. 1127 1128 The default value of $ipv6_prefer is NO. 1129 1130 4. If your system need to receive Router Advertisement messages, 1131 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 1132 scripts automatically invoke rtsol(8) when the interface becomes 1133 UP. The Router Advertisement messages are used for SLAAC 1134 (State-Less Address AutoConfiguration). 1135 113620090922: 1137 802.11s D3.03 support was committed. This is incompatible with the 1138 previous code, which was based on D3.0. 1139 114020090912: 1141 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 1142 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 1143 control whether accepting Router Advertisement messages or not. 1144 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 1145 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 1146 The ifconfig(8) utility now supports these flags. 1147 114820090910: 1149 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 1150 mount(8) and -a option for df(1) to see them. 1151 115220090825: 1153 The old tunable hw.bus.devctl_disable has been superseded by 1154 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 1155 replaced by hw.bus.devctl_queue=0. The default for this new tunable 1156 is 1000. 1157 115820090813: 1159 Remove the option STOP_NMI. The default action is now to use NMI only 1160 for KDB via the newly introduced function stop_cpus_hard() and 1161 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 1162 116320090803: 1164 The stable/8 branch created in subversion. This corresponds to the 1165 RELENG_8 branch in CVS. 1166 116720090719: 1168 Bump the shared library version numbers for all libraries that do not 1169 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 1170 __FreeBSD_version to 800105. 1171 117220090714: 1173 Due to changes in the implementation of virtual network stack support, 1174 all network-related kernel modules must be recompiled. As this change 1175 breaks the ABI, bump __FreeBSD_version to 800104. 1176 117720090713: 1178 The TOE interface to the TCP syncache has been modified to remove 1179 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 1180 The cxgb driver is the only TOE consumer affected by this change, and 1181 needs to be recompiled along with the kernel. As this change breaks 1182 the ABI, bump __FreeBSD_version to 800103. 1183 118420090712: 1185 Padding has been added to struct tcpcb, sackhint and tcpstat in 1186 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 1187 maintaining the ABI. However, this change breaks the ABI, so bump 1188 __FreeBSD_version to 800102. User space tools that rely on the size of 1189 any of these structs (e.g. sockstat) need to be recompiled. 1190 119120090630: 1192 The NFS_LEGACYRPC option has been removed along with the old kernel 1193 RPC implementation that this option selected. Kernel configurations 1194 may need to be adjusted. 1195 119620090629: 1197 The network interface device nodes at /dev/net/<interface> have been 1198 removed. All ioctl operations can be performed the normal way using 1199 routing sockets. The kqueue functionality can generally be replaced 1200 with routing sockets. 1201 120220090628: 1203 The documentation from the FreeBSD Documentation Project (Handbook, 1204 FAQ, etc.) is now installed via packages by sysinstall(8) and under 1205 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 1206 120720090624: 1208 The ABI of various structures related to the SYSV IPC API have been 1209 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 1210 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 1211 800100. 1212 121320090622: 1214 Layout of struct vnet has changed as routing related variables were 1215 moved to their own Vimage module. Modules need to be recompiled. Bump 1216 __FreeBSD_version to 800099. 1217 121820090619: 1219 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 1220 respectively. As long as no more than 16 groups per process are used, 1221 no changes should be visible. When more than 16 groups are used, old 1222 binaries may fail if they call getgroups() or getgrouplist() with 1223 statically sized storage. Recompiling will work around this, but 1224 applications should be modified to use dynamically allocated storage 1225 for group arrays as POSIX.1-2008 does not cap an implementation's 1226 number of supported groups at NGROUPS_MAX+1 as previous versions did. 1227 1228 NFS and portalfs mounts may also be affected as the list of groups is 1229 truncated to 16. Users of NFS who use more than 16 groups, should 1230 take care that negative group permissions are not used on the exported 1231 file systems as they will not be reliable unless a GSSAPI based 1232 authentication method is used. 1233 123420090616: 1235 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 1236 option compiles in the support for adaptive spinning for lockmgrs 1237 which want to enable it. The lockinit() function now accepts the flag 1238 LK_ADAPTIVE in order to make the lock object subject to adaptive 1239 spinning when both held in write and read mode. 1240 124120090613: 1242 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 1243 changed. User applications that use this ioctl need to be rebuilt. 1244 124520090611: 1246 The layout of struct thread has changed. Kernel and modules need to 1247 be rebuilt. 1248 124920090608: 1250 The layout of structs ifnet, domain, protosw and vnet_net has changed. 1251 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 1252 125320090602: 1254 window(1) has been removed from the base system. It can now be 1255 installed from ports. The port is called misc/window. 1256 125720090601: 1258 The way we are storing and accessing `routing table' entries has 1259 changed. Programs reading the FIB, like netstat, need to be 1260 re-compiled. 1261 126220090601: 1263 A new netisr implementation has been added for FreeBSD 8. Network 1264 file system modules, such as igmp, ipdivert, and others, should be 1265 rebuilt. 1266 Bump __FreeBSD_version to 800096. 1267 126820090530: 1269 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 1270 more valid. 1271 127220090530: 1273 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 1274 Bump __FreeBSD_version to 800094. 1275 127620090529: 1277 Add mnt_xflag field to 'struct mount'. File system modules need to be 1278 rebuilt. 1279 Bump __FreeBSD_version to 800093. 1280 128120090528: 1282 The compiling option ADAPTIVE_SX has been retired while it has been 1283 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1284 The KPI for sx_init_flags() changes as accepting flags: 1285 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1286 been introduced in order to handle the reversed logic. 1287 Bump __FreeBSD_version to 800092. 1288 128920090527: 1290 Add support for hierarchical jails. Remove global securelevel. 1291 Bump __FreeBSD_version to 800091. 1292 129320090523: 1294 The layout of struct vnet_net has changed, therefore modules 1295 need to be rebuilt. 1296 Bump __FreeBSD_version to 800090. 1297 129820090523: 1299 The newly imported zic(8) produces a new format in the output. Please 1300 run tzsetup(8) to install the newly created data to /etc/localtime. 1301 130220090520: 1303 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1304 hw.usb.* and is now consistent again with previous releases. 1305 130620090520: 1307 802.11 monitor mode support was revised and driver api's were changed. 1308 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1309 of DLT_IEEE802_11. No user-visible data structures were changed but 1310 applications that use DLT_IEEE802_11 may require changes. 1311 Bump __FreeBSD_version to 800088. 1312 131320090430: 1314 The layout of the following structs has changed: sysctl_oid, 1315 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1316 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1317 panics may be experienced. World rebuild is required for 1318 correctly checking networking state from userland. 1319 Bump __FreeBSD_version to 800085. 1320 132120090429: 1322 MLDv2 and Source-Specific Multicast (SSM) have been merged 1323 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1324 The implementation of SSM within FreeBSD's IPv6 stack closely 1325 follows the IPv4 implementation. 1326 1327 For kernel developers: 1328 1329 * The most important changes are that the ip6_output() and 1330 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1331 and this lock has been downgraded to a non-recursive mutex. 1332 1333 * As with the changes to the IPv4 stack to support SSM, filtering 1334 of inbound multicast traffic must now be performed by transport 1335 protocols within the IPv6 stack. This does not apply to TCP and 1336 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1337 1338 * The KPIs used by IPv6 multicast are similar to those used by 1339 the IPv4 stack, with the following differences: 1340 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1341 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1342 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1343 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1344 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1345 for MLDv1 have an additional 'timer' argument which is used to 1346 jitter the initial membership report for the solicited-node 1347 multicast membership on-link. 1348 * This is not strictly needed for MLDv2, which already jitters 1349 its report transmissions. However, the 'timer' argument is 1350 preserved in case MLDv1 is active on the interface. 1351 1352 * The KAME linked-list based IPv6 membership implementation has 1353 been refactored to use a vector similar to that used by the IPv4 1354 stack. 1355 Code which maintains a list of its own multicast memberships 1356 internally, e.g. carp, has been updated to reflect the new 1357 semantics. 1358 1359 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1360 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1361 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1362 implementation constraint which needs to be addressed in HEAD. 1363 1364 For application developers: 1365 1366 * The changes are broadly similar to those made for the IPv4 1367 stack. 1368 1369 * The use of IPv4 and IPv6 multicast socket options on the same 1370 socket, using mapped addresses, HAS NOT been tested or supported. 1371 1372 * There are a number of issues with the implementation of various 1373 IPv6 multicast APIs which need to be resolved in the API surface 1374 before the implementation is fully compatible with KAME userland 1375 use, and these are mostly to do with interface index treatment. 1376 1377 * The literature available discusses the use of either the delta / ASM 1378 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1379 using setsourcefilter(3)/getsourcefilter(3). For more information 1380 please refer to RFC 3768, 'Socket Interface Extensions for 1381 Multicast Source Filters'. 1382 1383 * Applications which use the published RFC 3678 APIs should be fine. 1384 1385 For systems administrators: 1386 1387 * The mtest(8) utility has been refactored to support IPv6, in 1388 addition to IPv4. Interface addresses are no longer accepted 1389 as arguments, their names must be used instead. The utility 1390 will map the interface name to its first IPv4 address as 1391 returned by getifaddrs(3). 1392 1393 * The ifmcstat(8) utility has also been updated to print the MLDv2 1394 endpoint state and source filter lists via sysctl(3). 1395 1396 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1397 loopback of IPv6 multicast datagrams by default; it defaults to 1 1398 to preserve the existing behaviour. Disabling multicast loopback is 1399 recommended for optimal system performance. 1400 1401 * The IPv6 MROUTING code has been changed to examine this sysctl 1402 instead of attempting to perform a group lookup before looping 1403 back forwarded datagrams. 1404 1405 Bump __FreeBSD_version to 800084. 1406 140720090422: 1408 Implement low-level Bluetooth HCI API. 1409 Bump __FreeBSD_version to 800083. 1410 141120090419: 1412 The layout of struct malloc_type, used by modules to register new 1413 memory allocation types, has changed. Most modules will need to 1414 be rebuilt or panics may be experienced. 1415 Bump __FreeBSD_version to 800081. 1416 141720090415: 1418 Anticipate overflowing inp_flags - add inp_flags2. 1419 This changes most offsets in inpcb, so checking v4 connection 1420 state will require a world rebuild. 1421 Bump __FreeBSD_version to 800080. 1422 142320090415: 1424 Add an llentry to struct route and struct route_in6. Modules 1425 embedding a struct route will need to be recompiled. 1426 Bump __FreeBSD_version to 800079. 1427 142820090414: 1429 The size of rt_metrics_lite and by extension rtentry has changed. 1430 Networking administration apps will need to be recompiled. 1431 The route command now supports show as an alias for get, weighting 1432 of routes, sticky and nostick flags to alter the behavior of stateful 1433 load balancing. 1434 Bump __FreeBSD_version to 800078. 1435 143620090408: 1437 Do not use Giant for kbdmux(4) locking. This is wrong and 1438 apparently causing more problems than it solves. This will 1439 re-open the issue where interrupt handlers may race with 1440 kbdmux(4) in polling mode. Typical symptoms include (but 1441 not limited to) duplicated and/or missing characters when 1442 low level console functions (such as gets) are used while 1443 interrupts are enabled (for example geli password prompt, 1444 mountroot prompt etc.). Disabling kbdmux(4) may help. 1445 144620090407: 1447 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1448 kernel modules referencing any of the above need to be recompiled. 1449 Bump __FreeBSD_version to 800075. 1450 145120090320: 1452 GEOM_PART has become the default partition slicer for storage devices, 1453 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1454 introduces some changes: 1455 1456 MSDOS/EBR: the devices created from MSDOS extended partition entries 1457 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1458 to devices with offset-based names. fstabs may need to be modified. 1459 1460 BSD: the "geometry does not match label" warning is harmless in most 1461 cases but it points to problems in file system misalignment with 1462 disk geometry. The "c" partition is now implicit, covers the whole 1463 top-level drive and cannot be (mis)used by users. 1464 1465 General: Kernel dumps are now not allowed to be written to devices 1466 whose partition types indicate they are meant to be used for file 1467 systems (or, in case of MSDOS partitions, as something else than 1468 the "386BSD" type). 1469 1470 Most of these changes date approximately from 200812. 1471 147220090319: 1473 The uscanner(4) driver has been removed from the kernel. This follows 1474 Linux removing theirs in 2.6 and making libusb the default interface 1475 (supported by sane). 1476 147720090319: 1478 The multicast forwarding code has been cleaned up. netstat(1) 1479 only relies on KVM now for printing bandwidth upcall meters. 1480 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1481 ip6_mroute_mod respectively. The config(5) options for statically 1482 compiling this code remain the same, i.e. 'options MROUTING'. 1483 148420090315: 1485 Support for the IFF_NEEDSGIANT network interface flag has been 1486 removed, which means that non-MPSAFE network device drivers are no 1487 longer supported. In particular, if_ar, if_sr, and network device 1488 drivers from the old (legacy) USB stack can no longer be built or 1489 used. 1490 149120090313: 1492 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1493 a bunch of new language catalog files have also been added. 1494 This means that some common libc messages are now localized and 1495 they depend on the LC_MESSAGES environmental variable. 1496 149720090313: 1498 The k8temp(4) driver has been renamed to amdtemp(4) since 1499 support for Family 10 and Family 11 CPU families was added. 1500 150120090309: 1502 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1503 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1504 1505 For kernel developers, the most important changes are that the 1506 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1507 and this lock has been downgraded to a non-recursive mutex. 1508 1509 Transport protocols (UDP, Raw IP) are now responsible for filtering 1510 inbound multicast traffic according to group membership and source 1511 filters. The imo_multicast_filter() KPI exists for this purpose. 1512 Transports which do not use multicast (SCTP, TCP) already reject 1513 multicast by default. Forwarding and receive performance may improve 1514 as a mutex acquisition is no longer needed in the ip_input() 1515 low-level input path. in_addmulti() and in_delmulti() are shimmed 1516 to new KPIs which exist to support SSM in-kernel. 1517 1518 For application developers, it is recommended that loopback of 1519 multicast datagrams be disabled for best performance, as this 1520 will still cause the lock to be taken for each looped-back 1521 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1522 be tuned to 0 to disable loopback by default; it defaults to 1 1523 to preserve the existing behaviour. 1524 1525 For systems administrators, to obtain best performance with 1526 multicast reception and multiple groups, it is always recommended 1527 that a card with a suitably precise hash filter is used. Hash 1528 collisions will still result in the lock being taken within the 1529 transport protocol input path to check group membership. 1530 1531 If deploying FreeBSD in an environment with IGMP snooping switches, 1532 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1533 enabled; this forces 224.0.0.0/24 group membership to be announced 1534 via IGMP. 1535 1536 The size of 'struct igmpstat' has changed; netstat needs to be 1537 recompiled to reflect this. 1538 Bump __FreeBSD_version to 800070. 1539 154020090309: 1541 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1542 updated to use it. This requires a buildworld/installworld in order to 1543 update the library and dependencies (usbconfig, etc). Its advisable to 1544 rebuild all ports which uses libusb. More specific directions are given 1545 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1546 libusb are no longer required and can be removed. 1547 154820090302: 1549 A workaround is committed to allow the creation of System V shared 1550 memory segment of size > 2 GB on the 64-bit architectures. 1551 Due to a limitation of the existing ABI, the shm_segsz member 1552 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1553 wrong for large segments. Note that limits must be explicitly 1554 raised to allow such segments to be created. 1555 155620090301: 1557 The layout of struct ifnet has changed, requiring a rebuild of all 1558 network device driver modules. 1559 156020090227: 1561 The /dev handling for the new USB stack has changed, a 1562 buildworld/installworld is required for libusb20. 1563 156420090223: 1565 The new USB2 stack has now been permanently moved in and all kernel and 1566 module names reverted to their previous values (eg, usb, ehci, ohci, 1567 ums, ...). The old usb stack can be compiled in by prefixing the name 1568 with the letter 'o', the old usb modules have been removed. 1569 Updating entry 20090216 for xorg and 20090215 for libmap may still 1570 apply. 1571 157220090217: 1573 The rc.conf(5) option if_up_delay has been renamed to 1574 defaultroute_delay to better reflect its purpose. If you have 1575 customized this setting in /etc/rc.conf you need to update it to 1576 use the new name. 1577 157820090216: 1579 xorg 7.4 wants to configure its input devices via hald which does not 1580 yet work with USB2. If the keyboard/mouse does not work in xorg then 1581 add 1582 Option "AllowEmptyInput" "off" 1583 to your ServerLayout section. This will cause X to use the configured 1584 kbd and mouse sections from your xorg.conf. 1585 158620090215: 1587 The GENERIC kernels for all architectures now default to the new USB2 1588 stack. No kernel config options or code have been removed so if a 1589 problem arises please report it and optionally revert to the old USB 1590 stack. If you are loading USB kernel modules or have a custom kernel 1591 that includes GENERIC then ensure that usb names are also changed over, 1592 eg uftdi -> usb2_serial_ftdi. 1593 1594 Older programs linked against the ports libusb 0.1 need to be 1595 redirected to the new stack's libusb20. /etc/libmap.conf can 1596 be used for this: 1597 # Map old usb library to new one for usb2 stack 1598 libusb-0.1.so.8 libusb20.so.1 1599 160020090209: 1601 All USB ethernet devices now attach as interfaces under the name ueN 1602 (eg. ue0). This is to provide a predictable name as vendors often 1603 change usb chipsets in a product without notice. 1604 160520090203: 1606 The ichsmb(4) driver has been changed to require SMBus slave 1607 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1608 All of the other SMBus controller drivers require left-justified 1609 slave addresses, so this change makes all the drivers provide the 1610 same interface. 1611 161220090201: 1613 INET6 statistics (struct ip6stat) was updated. 1614 netstat(1) needs to be recompiled. 1615 161620090119: 1617 NTFS has been removed from GENERIC kernel on amd64 to match 1618 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1619 will load ntfs.ko module automatically when NTFS support is 1620 actually needed, unless ntfs.ko is not installed or security 1621 level prohibits loading kernel modules. If either is the case, 1622 "options NTFS" has to be added into kernel config. 1623 162420090115: 1625 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1626 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1627 800061. User space tools that rely on the size of struct tcpcb in 1628 tcp_var.h (e.g. sockstat) need to be recompiled. 1629 163020081225: 1631 ng_tty(4) module updated to match the new TTY subsystem. 1632 Due to API change, user-level applications must be updated. 1633 New API support added to mpd5 CVS and expected to be present 1634 in next mpd5.3 release. 1635 163620081219: 1637 With __FreeBSD_version 800060 the makefs tool is part of 1638 the base system (it was a port). 1639 164020081216: 1641 The afdata and ifnet locks have been changed from mutexes to 1642 rwlocks, network modules will need to be re-compiled. 1643 164420081214: 1645 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1646 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1647 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1648 architecture and 40 bytes on 64-bit architecture. The userland 1649 applications "arp" and "ndp" have been updated accordingly. 1650 The output from "netstat -r" shows only routing entries and 1651 none of the L2 information. 1652 165320081130: 1654 __FreeBSD_version 800057 marks the switchover from the 1655 binary ath hal to source code. Users must add the line: 1656 1657 options AH_SUPPORT_AR5416 1658 1659 to their kernel config files when specifying: 1660 1661 device ath_hal 1662 1663 The ath_hal module no longer exists; the code is now compiled 1664 together with the driver in the ath module. It is now 1665 possible to tailor chip support (i.e. reduce the set of chips 1666 and thereby the code size); consult ath_hal(4) for details. 1667 166820081121: 1669 __FreeBSD_version 800054 adds memory barriers to 1670 <machine/atomic.h>, new interfaces to ifnet to facilitate 1671 multiple hardware transmit queues for cards that support 1672 them, and a lock-less ring-buffer implementation to 1673 enable drivers to more efficiently manage queueing of 1674 packets. 1675 167620081117: 1677 A new version of ZFS (version 13) has been merged to -HEAD. 1678 This version has zpool attribute "listsnapshots" off by 1679 default, which means "zfs list" does not show snapshots, 1680 and is the same as Solaris behavior. 1681 168220081028: 1683 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1684 168520081009: 1686 The uhci, ohci, ehci and slhci USB Host controller drivers have 1687 been put into separate modules. If you load the usb module 1688 separately through loader.conf you will need to load the 1689 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1690 controller add the following to loader.conf: 1691 1692 uhci_load="YES" 1693 ehci_load="YES" 1694 169520081009: 1696 The ABI used by the PMC toolset has changed. Please keep 1697 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1698 sync. 1699 170020081009: 1701 atapci kernel module now includes only generic PCI ATA 1702 driver. AHCI driver moved to ataahci kernel module. 1703 All vendor-specific code moved into separate kernel modules: 1704 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1705 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1706 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1707 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1708 170920080820: 1710 The TTY subsystem of the kernel has been replaced by a new 1711 implementation, which provides better scalability and an 1712 improved driver model. Most common drivers have been migrated to 1713 the new TTY subsystem, while others have not. The following 1714 drivers have not yet been ported to the new TTY layer: 1715 1716 PCI/ISA: 1717 cy, digi, rc, rp, sio 1718 1719 USB: 1720 ubser, ucycom 1721 1722 Line disciplines: 1723 ng_h4, ng_tty, ppp, sl, snp 1724 1725 Adding these drivers to your kernel configuration file shall 1726 cause compilation to fail. 1727 172820080818: 1729 ntpd has been upgraded to 4.2.4p5. 1730 173120080801: 1732 OpenSSH has been upgraded to 5.1p1. 1733 1734 For many years, FreeBSD's version of OpenSSH preferred DSA 1735 over RSA for host and user authentication keys. With this 1736 upgrade, we've switched to the vendor's default of RSA over 1737 DSA. This may cause upgraded clients to warn about unknown 1738 host keys even for previously known hosts. Users should 1739 follow the usual procedure for verifying host keys before 1740 accepting the RSA key. 1741 1742 This can be circumvented by setting the "HostKeyAlgorithms" 1743 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1744 command line. 1745 1746 Please note that the sequence of keys offered for 1747 authentication has been changed as well. You may want to 1748 specify IdentityFile in a different order to revert this 1749 behavior. 1750 175120080713: 1752 The sio(4) driver has been removed from the i386 and amd64 1753 kernel configuration files. This means uart(4) is now the 1754 default serial port driver on those platforms as well. 1755 1756 To prevent collisions with the sio(4) driver, the uart(4) driver 1757 uses different names for its device nodes. This means the 1758 onboard serial port will now most likely be called "ttyu0" 1759 instead of "ttyd0". You may need to reconfigure applications to 1760 use the new device names. 1761 1762 When using the serial port as a boot console, be sure to update 1763 /boot/device.hints and /etc/ttys before booting the new kernel. 1764 If you forget to do so, you can still manually specify the hints 1765 at the loader prompt: 1766 1767 set hint.uart.0.at="isa" 1768 set hint.uart.0.port="0x3F8" 1769 set hint.uart.0.flags="0x10" 1770 set hint.uart.0.irq="4" 1771 boot -s 1772 177320080609: 1774 The gpt(8) utility has been removed. Use gpart(8) to partition 1775 disks instead. 1776 177720080603: 1778 The version that Linuxulator emulates was changed from 2.4.2 1779 to 2.6.16. If you experience any problems with Linux binaries 1780 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1781 if it fixes the problem contact emulation mailing list. 1782 178320080525: 1784 ISDN4BSD (I4B) was removed from the src tree. You may need to 1785 update a your kernel configuration and remove relevant entries. 1786 178720080509: 1788 I have checked in code to support multiple routing tables. 1789 See the man pages setfib(1) and setfib(2). 1790 This is a hopefully backwards compatible version, 1791 but to make use of it you need to compile your kernel 1792 with options ROUTETABLES=2 (or more up to 16). 1793 179420080420: 1795 The 802.11 wireless support was redone to enable multi-bss 1796 operation on devices that are capable. The underlying device 1797 is no longer used directly but instead wlanX devices are 1798 cloned with ifconfig. This requires changes to rc.conf files. 1799 For example, change: 1800 ifconfig_ath0="WPA DHCP" 1801 to 1802 wlans_ath0=wlan0 1803 ifconfig_wlan0="WPA DHCP" 1804 see rc.conf(5) for more details. In addition, mergemaster of 1805 /etc/rc.d is highly recommended. Simultaneous update of userland 1806 and kernel wouldn't hurt either. 1807 1808 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1809 modules were merged into the base wlan module. All references 1810 to these modules (e.g. in kernel config files) must be removed. 1811 181220080408: 1813 psm(4) has gained write(2) support in native operation level. 1814 Arbitrary commands can be written to /dev/psm%d and status can 1815 be read back from it. Therefore, an application is responsible 1816 for status validation and error recovery. It is a no-op in 1817 other operation levels. 1818 181920080312: 1820 Support for KSE threading has been removed from the kernel. To 1821 run legacy applications linked against KSE libmap.conf may 1822 be used. The following libmap.conf may be used to ensure 1823 compatibility with any prior release: 1824 1825 libpthread.so.1 libthr.so.1 1826 libpthread.so.2 libthr.so.2 1827 libkse.so.3 libthr.so.3 1828 182920080301: 1830 The layout of struct vmspace has changed. This affects libkvm 1831 and any executables that link against libkvm and use the 1832 kvm_getprocs() function. In particular, but not exclusively, 1833 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1834 The effects are minimal, but it's advisable to upgrade world 1835 nonetheless. 1836 183720080229: 1838 The latest em driver no longer has support in it for the 1839 82575 adapter, this is now moved to the igb driver. The 1840 split was done to make new features that are incompatible 1841 with older hardware easier to do. 1842 184320080220: 1844 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1845 likewise the kernel option is now GEOM_LINUX_LVM. 1846 184720080211: 1848 The default NFS mount mode has changed from UDP to TCP for 1849 increased reliability. If you rely on (insecurely) NFS 1850 mounting across a firewall you may need to update your 1851 firewall rules. 1852 185320080208: 1854 Belatedly note the addition of m_collapse for compacting 1855 mbuf chains. 1856 185720080126: 1858 The fts(3) structures have been changed to use adequate 1859 integer types for their members and so to be able to cope 1860 with huge file trees. The old fts(3) ABI is preserved 1861 through symbol versioning in libc, so third-party binaries 1862 using fts(3) should still work, although they will not take 1863 advantage of the extended types. At the same time, some 1864 third-party software might fail to build after this change 1865 due to unportable assumptions made in its source code about 1866 fts(3) structure members. Such software should be fixed 1867 by its vendor or, in the worst case, in the ports tree. 1868 FreeBSD_version 800015 marks this change for the unlikely 1869 case that a portable fix is impossible. 1870 187120080123: 1872 To upgrade to -current after this date, you must be running 1873 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1874 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1875 187620071128: 1877 The ADAPTIVE_GIANT kernel option has been retired because its 1878 functionality is the default now. 1879 188020071118: 1881 The AT keyboard emulation of sunkbd(4) has been turned on 1882 by default. In order to make the special symbols of the Sun 1883 keyboards driven by sunkbd(4) work under X these now have 1884 to be configured the same way as Sun USB keyboards driven 1885 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1886 1887 Option "XkbLayout" "us" 1888 Option "XkbRules" "xorg" 1889 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1890 189120071024: 1892 It has been decided that it is desirable to provide ABI 1893 backwards compatibility to the FreeBSD 4/5/6 versions of the 1894 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1895 broken with the introduction of PCI domain support (see the 1896 20070930 entry). Unfortunately, this required the ABI of 1897 PCIOCGETCONF to be broken again in order to be able to 1898 provide backwards compatibility to the old version of that 1899 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1900 again. As for prominent ports this affects neither pciutils 1901 nor xorg-server this time, the hal port needs to be rebuilt 1902 however. 1903 190420071020: 1905 The misnamed kthread_create() and friends have been renamed 1906 to kproc_create() etc. Many of the callers already 1907 used kproc_start().. 1908 I will return kthread_create() and friends in a while 1909 with implementations that actually create threads, not procs. 1910 Renaming corresponds with version 800002. 1911 191220071010: 1913 RELENG_7 branched. 1914 1915COMMON ITEMS: 1916 1917 General Notes 1918 ------------- 1919 Avoid using make -j when upgrading. While generally safe, there are 1920 sometimes problems using -j to upgrade. If your upgrade fails with 1921 -j, please try again without -j. From time to time in the past there 1922 have been problems using -j with buildworld and/or installworld. This 1923 is especially true when upgrading between "distant" versions (eg one 1924 that cross a major release boundary or several minor releases, or when 1925 several months have passed on the -current branch). 1926 1927 Sometimes, obscure build problems are the result of environment 1928 poisoning. This can happen because the make utility reads its 1929 environment when searching for values for global variables. To run 1930 your build attempts in an "environmental clean room", prefix all make 1931 commands with 'env -i '. See the env(1) manual page for more details. 1932 1933 When upgrading from one major version to another it is generally best 1934 to upgrade to the latest code in the currently installed branch first, 1935 then do an upgrade to the new branch. This is the best-tested upgrade 1936 path, and has the highest probability of being successful. Please try 1937 this approach before reporting problems with a major version upgrade. 1938 1939 When upgrading a live system, having a root shell around before 1940 installing anything can help undo problems. Not having a root shell 1941 around can lead to problems if pam has changed too much from your 1942 starting point to allow continued authentication after the upgrade. 1943 1944 ZFS notes 1945 --------- 1946 When upgrading the boot ZFS pool to a new version, always follow 1947 these two steps: 1948 1949 1.) recompile and reinstall the ZFS boot loader and boot block 1950 (this is part of "make buildworld" and "make installworld") 1951 1952 2.) update the ZFS boot block on your boot drive 1953 1954 The following example updates the ZFS boot block on the first 1955 partition (freebsd-boot) of a GPT partitioned drive ad0: 1956 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1957 1958 Non-boot pools do not need these updates. 1959 1960 To build a kernel 1961 ----------------- 1962 If you are updating from a prior version of FreeBSD (even one just 1963 a few days old), you should follow this procedure. It is the most 1964 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1965 1966 make kernel-toolchain 1967 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1968 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1969 1970 To test a kernel once 1971 --------------------- 1972 If you just want to boot a kernel once (because you are not sure 1973 if it works, or if you want to boot a known bad kernel to provide 1974 debugging information) run 1975 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1976 nextboot -k testkernel 1977 1978 To just build a kernel when you know that it won't mess you up 1979 -------------------------------------------------------------- 1980 This assumes you are already running a CURRENT system. Replace 1981 ${arch} with the architecture of your machine (e.g. "i386", 1982 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1983 1984 cd src/sys/${arch}/conf 1985 config KERNEL_NAME_HERE 1986 cd ../compile/KERNEL_NAME_HERE 1987 make depend 1988 make 1989 make install 1990 1991 If this fails, go to the "To build a kernel" section. 1992 1993 To rebuild everything and install it on the current system. 1994 ----------------------------------------------------------- 1995 # Note: sometimes if you are running current you gotta do more than 1996 # is listed here if you are upgrading from a really old current. 1997 1998 <make sure you have good level 0 dumps> 1999 make buildworld 2000 make kernel KERNCONF=YOUR_KERNEL_HERE 2001 [1] 2002 <reboot in single user> [3] 2003 mergemaster -p [5] 2004 make installworld 2005 mergemaster -i [4] 2006 make delete-old [6] 2007 <reboot> 2008 2009 To cross-install current onto a separate partition 2010 -------------------------------------------------- 2011 # In this approach we use a separate partition to hold 2012 # current's root, 'usr', and 'var' directories. A partition 2013 # holding "/", "/usr" and "/var" should be about 2GB in 2014 # size. 2015 2016 <make sure you have good level 0 dumps> 2017 <boot into -stable> 2018 make buildworld 2019 make buildkernel KERNCONF=YOUR_KERNEL_HERE 2020 <maybe newfs current's root partition> 2021 <mount current's root partition on directory ${CURRENT_ROOT}> 2022 make installworld DESTDIR=${CURRENT_ROOT} 2023 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 2024 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 2025 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 2026 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 2027 <reboot into current> 2028 <do a "native" rebuild/install as described in the previous section> 2029 <maybe install compatibility libraries from ports/misc/compat*> 2030 <reboot> 2031 2032 2033 To upgrade in-place from stable to current 2034 ---------------------------------------------- 2035 <make sure you have good level 0 dumps> 2036 make buildworld [9] 2037 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 2038 [1] 2039 <reboot in single user> [3] 2040 mergemaster -p [5] 2041 make installworld 2042 mergemaster -i [4] 2043 make delete-old [6] 2044 <reboot> 2045 2046 Make sure that you've read the UPDATING file to understand the 2047 tweaks to various things you need. At this point in the life 2048 cycle of current, things change often and you are on your own 2049 to cope. The defaults can also change, so please read ALL of 2050 the UPDATING entries. 2051 2052 Also, if you are tracking -current, you must be subscribed to 2053 freebsd-current@freebsd.org. Make sure that before you update 2054 your sources that you have read and understood all the recent 2055 messages there. If in doubt, please track -stable which has 2056 much fewer pitfalls. 2057 2058 [1] If you have third party modules, such as vmware, you 2059 should disable them at this point so they don't crash your 2060 system on reboot. 2061 2062 [3] From the bootblocks, boot -s, and then do 2063 fsck -p 2064 mount -u / 2065 mount -a 2066 cd src 2067 adjkerntz -i # if CMOS is wall time 2068 Also, when doing a major release upgrade, it is required that 2069 you boot into single user mode to do the installworld. 2070 2071 [4] Note: This step is non-optional. Failure to do this step 2072 can result in a significant reduction in the functionality of the 2073 system. Attempting to do it by hand is not recommended and those 2074 that pursue this avenue should read this file carefully, as well 2075 as the archives of freebsd-current and freebsd-hackers mailing lists 2076 for potential gotchas. The -U option is also useful to consider. 2077 See mergemaster(8) for more information. 2078 2079 [5] Usually this step is a noop. However, from time to time 2080 you may need to do this if you get unknown user in the following 2081 step. It never hurts to do it all the time. You may need to 2082 install a new mergemaster (cd src/usr.sbin/mergemaster && make 2083 install) after the buildworld before this step if you last updated 2084 from current before 20130425 or from -stable before 20130430. 2085 2086 [6] This only deletes old files and directories. Old libraries 2087 can be deleted by "make delete-old-libs", but you have to make 2088 sure that no program is using those libraries anymore. 2089 2090 [8] In order to have a kernel that can run the 4.x binaries needed to 2091 do an installworld, you must include the COMPAT_FREEBSD4 option in 2092 your kernel. Failure to do so may leave you with a system that is 2093 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 2094 required to run the 5.x binaries on more recent kernels. And so on 2095 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 2096 2097 Make sure that you merge any new devices from GENERIC since the 2098 last time you updated your kernel config file. 2099 2100 [9] When checking out sources, you must include the -P flag to have 2101 cvs prune empty directories. 2102 2103 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 2104 "?=" instead of the "=" assignment operator, so that buildworld can 2105 override the CPUTYPE if it needs to. 2106 2107 MAKEOBJDIRPREFIX must be defined in an environment variable, and 2108 not on the command line, or in /etc/make.conf. buildworld will 2109 warn if it is improperly defined. 2110FORMAT: 2111 2112This file contains a list, in reverse chronological order, of major 2113breakages in tracking -current. It is not guaranteed to be a complete 2114list of such breakages, and only contains entries since October 10, 2007. 2115If you need to see UPDATING entries from before that date, you will need 2116to fetch an UPDATING file from an older FreeBSD release. 2117 2118Copyright information: 2119 2120Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 2121 2122Redistribution, publication, translation and use, with or without 2123modification, in full or in part, in any form or format of this 2124document are permitted without further permission from the author. 2125 2126THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 2127IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 2128WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2129DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 2130INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2131(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2132SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2133HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2134STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2135IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2136POSSIBILITY OF SUCH DAMAGE. 2137 2138Contact Warner Losh if you have any questions about your use of 2139this document. 2140 2141$FreeBSD: stable/10/UPDATING 270905 2014-08-31 23:09:23Z ngie $ 2142