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 16head, and then rebuild without this option. The bootstrap process from 17older version of current is a bit fragile. 18 19NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW: 20 FreeBSD 11.x has many debugging features turned on, in both the kernel 21 and userland. These features attempt to detect incorrect use of 22 system primitives, and encourage loud failure through extra sanity 23 checking and fail stop semantics. They also substantially impact 24 system performance. If you want to do performance measurement, 25 benchmarking, and optimization, you'll want to turn them off. This 26 includes various WITNESS- related kernel options, INVARIANTS, malloc 27 debugging flags in userland, and various verbose features in the 28 kernel. Many developers choose to disable these features on build 29 machines to maximize performance. (To completely disable malloc 30 debugging, define MALLOC_PRODUCTION in /etc/make.conf, or to merely 31 disable the most expensive debugging functionality run 32 "ln -s 'abort:false,junk:false' /etc/malloc.conf".) 33 3420140306: 35 Support for libwrap (TCP wrappers) in rpcbind was disabled by default 36 to improve performance. To re-enable it, if needed, run rpcbind 37 with command line option -W. 38 3920140226: 40 Switched back to the GPL dtc compiler due to updates in the upstream 41 dts files not being supported by the BSDL dtc compiler. You will need 42 to rebuild your kernel toolchain to pick up the new compiler. Core dumps 43 may result while building dtb files during a kernel build if you fail 44 to do so. Set WITHOUT_GPL_DTC if you require the BSDL compiler. 45 4620140216: 47 Clang and llvm have been upgraded to 3.4 release. 48 4920140216: 50 The nve(4) driver has been removed. Please use the nfe(4) driver 51 for NVIDIA nForce MCP Ethernet adapters instead. 52 5320140212: 54 An ABI incompatibility crept into the libc++ 3.4 import in r261283. 55 This could cause certain C++ applications using shared libraries built 56 against the previous version of libc++ to crash. The incompatibility 57 has now been fixed, but any C++ applications or shared libraries built 58 between r261283 and r261801 should be recompiled. 59 6020140204: 61 OpenSSH will now ignore errors caused by kernel lacking of Capsicum 62 capability mode support. Please note that enabling the feature in 63 kernel is still highly recommended. 64 6520140131: 66 OpenSSH is now built with sandbox support, and will use sandbox as 67 the default privilege separation method. This requires Capsicum 68 capability mode support in kernel. 69 7020140128: 71 The libelf and libdwarf libraries have been updated to newer 72 versions from upstream. Shared library version numbers for 73 these two libraries were bumped. Any ports or binaries 74 requiring these two libraries should be recompiled. 75 __FreeBSD_version is bumped to 1100006. 76 7720140110: 78 If a Makefile in a tests/ directory was auto-generating a Kyuafile 79 instead of providing an explicit one, this would prevent such 80 Makefile from providing its own Kyuafile in the future during 81 NO_CLEAN builds. This has been fixed in the Makefiles but manual 82 intervention is needed to clean an objdir if you use NO_CLEAN: 83 # find /usr/obj -name Kyuafile | xargs rm -f 84 8520131213: 86 The behavior of gss_pseudo_random() for the krb5 mechanism 87 has changed, for applications requesting a longer random string 88 than produced by the underlying enctype's pseudo-random() function. 89 In particular, the random string produced from a session key of 90 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 91 be different at the 17th octet and later, after this change. 92 The counter used in the PRF+ construction is now encoded as a 93 big-endian integer in accordance with RFC 4402. 94 __FreeBSD_version is bumped to 1100004. 95 9620131108: 97 The WITHOUT_ATF build knob has been removed and its functionality 98 has been subsumed into the more generic WITHOUT_TESTS. If you were 99 using the former to disable the build of the ATF libraries, you 100 should change your settings to use the latter. 101 10220131025: 103 The default version of mtree is nmtree which is obtained from 104 NetBSD. The output is generally the same, but may vary 105 slightly. If you found you need identical output adding 106 "-F freebsd9" to the command line should do the trick. For the 107 time being, the old mtree is available as fmtree. 108 10920131014: 110 libbsdyml has been renamed to libyaml and moved to /usr/lib/private. 111 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg 112 1.1.4_8 and verify bsdyml not linked in, before running "make 113 delete-old-libs": 114 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean 115 or 116 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml 117 11820131010: 119 The rc.d/jail script has been updated to support jail(8) 120 configuration file. The "jail_<jname>_*" rc.conf(5) variables 121 for per-jail configuration are automatically converted to 122 /var/run/jail.<jname>.conf before the jail(8) utility is invoked. 123 This is transparently backward compatible. See below about some 124 incompatibilities and rc.conf(5) manual page for more details. 125 126 These variables are now deprecated in favor of jail(8) configuration 127 file. One can use "rc.d/jail config <jname>" command to generate 128 a jail(8) configuration file in /var/run/jail.<jname>.conf without 129 running the jail(8) utility. The default pathname of the 130 configuration file is /etc/jail.conf and can be specified by 131 using $jail_conf or $jail_<jname>_conf variables. 132 133 Please note that jail_devfs_ruleset accepts an integer at 134 this moment. Please consider to rewrite the ruleset name 135 with an integer. 136 13720130930: 138 BIND has been removed from the base system. If all you need 139 is a local resolver, simply enable and start the local_unbound 140 service instead. Otherwise, several versions of BIND are 141 available in the ports tree. The dns/bind99 port is one example. 142 143 With this change, nslookup(1) and dig(1) are no longer in the base 144 system. Users should instead use host(1) and drill(1) which are 145 in the base system. Alternatively, nslookup and dig can 146 be obtained by installing the dns/bind-tools port. 147 14820130916: 149 With the addition of unbound(8), a new unbound user is now 150 required during installworld. "mergemaster -p" can be used to 151 add the user prior to installworld, as documented in the handbook. 152 15320130911: 154 OpenSSH is now built with DNSSEC support, and will by default 155 silently trust signed SSHFP records. This can be controlled with 156 the VerifyHostKeyDNS client configuration setting. DNSSEC support 157 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 158 15920130906: 160 The GNU Compiler Collection and C++ standard library (libstdc++) 161 are no longer built by default on platforms where clang is the system 162 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 163 options in src.conf. 164 16520130905: 166 The PROCDESC kernel option is now part of the GENERIC kernel 167 configuration and is required for the rwhod(8) to work. 168 If you are using custom kernel configuration, you should include 169 'options PROCDESC'. 170 17120130905: 172 The API and ABI related to the Capsicum framework was modified 173 in backward incompatible way. The userland libraries and programs 174 have to be recompiled to work with the new kernel. This includes the 175 following libraries and programs, but the whole buildworld is 176 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 177 kdump, procstat, rwho, rwhod, uniq. 178 17920130903: 180 AES-NI intrinsic support has been added to gcc. The AES-NI module 181 has been updated to use this support. A new gcc is required to build 182 the aesni module on both i386 and amd64. 183 18420130821: 185 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 186 Thus "device padlock_rng" and "device rdrand_rng" should be 187 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 188 18920130813: 190 WITH_ICONV has been split into two feature sets. WITH_ICONV now 191 enables just the iconv* functionality and is now on by default. 192 WITH_LIBICONV_COMPAT enables the libiconv api and link time 193 compatability. Set WITHOUT_ICONV to build the old way. 194 If you have been using WITH_ICONV before, you will very likely 195 need to turn on WITH_LIBICONV_COMPAT. 196 19720130806: 198 INVARIANTS option now enables DEBUG for code with OpenSolaris and 199 Illumos origin, including ZFS. If you have INVARIANTS in your 200 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 201 explicitly. 202 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 203 locks if WITNESS option was set. Because that generated a lot of 204 witness(9) reports and all of them were believed to be false 205 positives, this is no longer done. New option OPENSOLARIS_WITNESS 206 can be used to achieve the previous behavior. 207 20820130806: 209 Timer values in IPv6 data structures now use time_uptime instead 210 of time_second. Although this is not a user-visible functional 211 change, userland utilities which directly use them---ndp(8), 212 rtadvd(8), and rtsold(8) in the base system---need to be updated 213 to r253970 or later. 214 21520130802: 216 find -delete can now delete the pathnames given as arguments, 217 instead of only files found below them or if the pathname did 218 not contain any slashes. Formerly, the following error message 219 would result: 220 221 find: -delete: <path>: relative path potentially not safe 222 223 Deleting the pathnames given as arguments can be prevented 224 without error messages using -mindepth 1 or by changing 225 directory and passing "." as argument to find. This works in the 226 old as well as the new version of find. 227 22820130726: 229 Behavior of devfs rules path matching has been changed. 230 Pattern is now always matched against fully qualified devfs 231 path and slash characters must be explicitly matched by 232 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 233 subdirectories must be reviewed. 234 23520130716: 236 The default ARM ABI has changed to the ARM EABI. The old ABI is 237 incompatible with the ARM EABI and all programs and modules will 238 need to be rebuilt to work with a new kernel. 239 240 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 241 242 NOTE: Support for the old ABI will be removed in the future and 243 users are advised to upgrade. 244 24520130709: 246 pkg_install has been disconnected from the build if you really need it 247 you should add WITH_PKGTOOLS in your src.conf(5). 248 24920130709: 250 Most of network statistics structures were changed to be able 251 keep 64-bits counters. Thus all tools, that work with networking 252 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 253 25420130629: 255 Fix targets that run multiple make's to use && rather than ; 256 so that subsequent steps depend on success of previous. 257 258 NOTE: if building 'universe' with -j* on stable/8 or stable/9 259 it would be better to start the build using bmake, to avoid 260 overloading the machine. 261 26220130618: 263 Fix a bug that allowed a tracing process (e.g. gdb) to write 264 to a memory-mapped file in the traced process's address space 265 even if neither the traced process nor the tracing process had 266 write access to that file. 267 26820130615: 269 CVS has been removed from the base system. An exact copy 270 of the code is available from the devel/cvs port. 271 27220130613: 273 Some people report the following error after the switch to bmake: 274 275 make: illegal option -- J 276 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 277 ... 278 *** [buildworld] Error code 2 279 280 this likely due to an old instance of make in 281 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 282 which src/Makefile will use that blindly, if it exists, so if 283 you see the above error: 284 285 rm -rf `make -V MAKEPATH` 286 287 should resolve it. 288 28920130516: 290 Use bmake by default. 291 Whereas before one could choose to build with bmake via 292 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 293 make. The goal is to remove these knobs for 10-RELEASE. 294 295 It is worth noting that bmake (like gmake) treats the command 296 line as the unit of failure, rather than statements within the 297 command line. Thus '(cd some/where && dosomething)' is safer 298 than 'cd some/where; dosomething'. The '()' allows consistent 299 behavior in parallel build. 300 30120130429: 302 Fix a bug that allows NFS clients to issue READDIR on files. 303 30420130426: 305 The WITHOUT_IDEA option has been removed because 306 the IDEA patent expired. 307 30820130426: 309 The sysctl which controls TRIM support under ZFS has been renamed 310 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 311 enabled by default. 312 31320130425: 314 The mergemaster command now uses the default MAKEOBJDIRPREFIX 315 rather than creating it's own in the temporary directory in 316 order allow access to bootstrapped versions of tools such as 317 install and mtree. When upgrading from version of FreeBSD where 318 the install command does not support -l, you will need to 319 install a new mergemaster command if mergemaster -p is required. 320 This can be accomplished with the command (cd src/usr.sbin/mergemaster 321 && make install). 322 32320130404: 324 Legacy ATA stack, disabled and replaced by new CAM-based one since 325 FreeBSD 9.0, completely removed from the sources. Kernel modules 326 atadisk and atapi*, user-level tools atacontrol and burncd are 327 removed. Kernel option `options ATA_CAM` is now permanently enabled 328 and removed. 329 33020130319: 331 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 332 and socketpair(2). Software, in particular Kerberos, may 333 automatically detect and use these during building. The resulting 334 binaries will not work on older kernels. 335 33620130308: 337 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 338 information, see the respective 20130304 entry). 339 34020130304: 341 Recent commits to callout(9) changed the size of struct callout, 342 so the KBI is probably heavily disturbed. Also, some functions 343 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 344 by macros. Every kernel module using it won't load, so rebuild 345 is requested. 346 347 The ctl device has been re-enabled in GENERIC for i386 and amd64, 348 but does not initialize by default (because of the new CTL_DISABLE 349 option) to save memory. To re-enable it, remove the CTL_DISABLE 350 option from the kernel config file or set kern.cam.ctl.disable=0 351 in /boot/loader.conf. 352 35320130301: 354 The ctl device has been disabled in GENERIC for i386 and amd64. 355 This was done due to the extra memory being allocated at system 356 initialisation time by the ctl driver which was only used if 357 a CAM target device was created. This makes a FreeBSD system 358 unusable on 128MB or less of RAM. 359 36020130208: 361 A new compression method (lz4) has been merged to -HEAD. Please 362 refer to zpool-features(7) for more information. 363 364 Please refer to the "ZFS notes" section of this file for information 365 on upgrading boot ZFS pools. 366 36720130129: 368 A BSD-licensed patch(1) variant has been added and is installed 369 as bsdpatch, being the GNU version the default patch. 370 To inverse the logic and use the BSD-licensed one as default, 371 while having the GNU version installed as gnupatch, rebuild 372 and install world with the WITH_BSD_PATCH knob set. 373 37420130121: 375 Due to the use of the new -l option to install(1) during build 376 and install, you must take care not to directly set the INSTALL 377 make variable in your /etc/make.conf, /etc/src.conf, or on the 378 command line. If you wish to use the -C flag for all installs 379 you may be able to add INSTALL+=-C to /etc/make.conf or 380 /etc/src.conf. 381 38220130118: 383 The install(1) option -M has changed meaning and now takes an 384 argument that is a file or path to append logs to. In the 385 unlikely event that -M was the last option on the command line 386 and the command line contained at least two files and a target 387 directory the first file will have logs appended to it. The -M 388 option served little practical purpose in the last decade so its 389 use is expected to be extremely rare. 390 39120121223: 392 After switching to Clang as the default compiler some users of ZFS 393 on i386 systems started to experience stack overflow kernel panics. 394 Please consider using 'options KSTACK_PAGES=4' in such configurations. 395 39620121222: 397 GEOM_LABEL now mangles label names read from file system metadata. 398 Mangling affect labels containing spaces, non-printable characters, 399 '%' or '"'. Device names in /etc/fstab and other places may need to 400 be updated. 401 40220121217: 403 By default, only the 10 most recent kernel dumps will be saved. To 404 restore the previous behaviour (no limit on the number of kernel dumps 405 stored in the dump directory) add the following line to /etc/rc.conf: 406 407 savecore_flags="" 408 40920121201: 410 With the addition of auditdistd(8), a new auditdistd user is now 411 required during installworld. "mergemaster -p" can be used to 412 add the user prior to installworld, as documented in the handbook. 413 41420121117: 415 The sin6_scope_id member variable in struct sockaddr_in6 is now 416 filled by the kernel before passing the structure to the userland via 417 sysctl or routing socket. This means the KAME-specific embedded scope 418 id in sin6_addr.s6_addr[2] is always cleared in userland application. 419 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 420 __FreeBSD_version is bumped to 1000025. 421 42220121105: 423 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 424 This means that the world and kernel will be compiled with clang 425 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 426 and /usr/bin/cpp. To disable this behavior and revert to building 427 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 428 of current may need to bootstrap WITHOUT_CLANG first if the clang 429 build fails (its compatibility window doesn't extend to the 9 stable 430 branch point). 431 43220121102: 433 The IPFIREWALL_FORWARD kernel option has been removed. Its 434 functionality now turned on by default. 435 43620121023: 437 The ZERO_COPY_SOCKET kernel option has been removed and 438 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 439 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 440 mechanism which is not safe and may result in kernel crashes. 441 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 442 driver supports disposeable external page sized mbuf storage. 443 Proper replacements for both zero-copy mechanisms are under 444 consideration and will eventually lead to complete removal 445 of the two kernel options. 446 44720121023: 448 The IPv4 network stack has been converted to network byte 449 order. The following modules need to be recompiled together 450 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 451 pf(4), ipfw(4), ng_ipfw(4), stf(4). 452 45320121022: 454 Support for non-MPSAFE filesystems was removed from VFS. The 455 VFS_VERSION was bumped, all filesystem modules shall be 456 recompiled. 457 45820121018: 459 All the non-MPSAFE filesystems have been disconnected from 460 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 461 portalfs, smbfs, xfs. 462 46320121016: 464 The interface cloning API and ABI has changed. The following 465 modules need to be recompiled together with kernel: 466 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 467 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 468 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 469 47020121015: 471 The sdhci driver was split in two parts: sdhci (generic SD Host 472 Controller logic) and sdhci_pci (actual hardware driver). 473 No kernel config modifications are required, but if you 474 load sdhc as a module you must switch to sdhci_pci instead. 475 47620121014: 477 Import the FUSE kernel and userland support into base system. 478 47920121013: 480 The GNU sort(1) program has been removed since the BSD-licensed 481 sort(1) has been the default for quite some time and no serious 482 problems have been reported. The corresponding WITH_GNU_SORT 483 knob has also gone. 484 48520121006: 486 The pfil(9) API/ABI for AF_INET family has been changed. Packet 487 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 488 with new kernel. 489 49020121001: 491 The net80211(4) ABI has been changed to allow for improved driver 492 PS-POLL and power-save support. All wireless drivers need to be 493 recompiled to work with the new kernel. 494 49520120913: 496 The random(4) support for the VIA hardware random number 497 generator (`PADLOCK') is no longer enabled unconditionally. 498 Add the padlock_rng device in the custom kernel config if 499 needed. The GENERIC kernels on i386 and amd64 do include the 500 device, so the change only affects the custom kernel 501 configurations. 502 50320120908: 504 The pf(4) packet filter ABI has been changed. pfctl(8) and 505 snmp_pf module need to be recompiled to work with new kernel. 506 50720120828: 508 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 509 to -HEAD. Pools that have empty_bpobj in active state can not be 510 imported read-write with ZFS implementations that do not support 511 this feature. For more information read the zpool-features(5) 512 manual page. 513 51420120727: 515 The sparc64 ZFS loader has been changed to no longer try to auto- 516 detect ZFS providers based on diskN aliases but now requires these 517 to be explicitly listed in the OFW boot-device environment variable. 518 51920120712: 520 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 521 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 522 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 523 52420120712: 525 The following sysctls and tunables have been renamed for consistency 526 with other variables: 527 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 528 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 529 53020120628: 531 The sort utility has been replaced with BSD sort. For now, GNU sort 532 is also available as "gnusort" or the default can be set back to 533 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 534 installed as "bsdsort". 535 53620120611: 537 A new version of ZFS (pool version 5000) has been merged to -HEAD. 538 Starting with this version the old system of ZFS pool versioning 539 is superseded by "feature flags". This concept enables forward 540 compatibility against certain future changes in functionality of ZFS 541 pools. The first read-only compatible "feature flag" for ZFS pools 542 is named "com.delphix:async_destroy". For more information 543 read the new zpool-features(5) manual page. 544 Please refer to the "ZFS notes" section of this file for information 545 on upgrading boot ZFS pools. 546 54720120417: 548 The malloc(3) implementation embedded in libc now uses sources imported 549 as contrib/jemalloc. The most disruptive API change is to 550 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 551 delete it prior to installworld, and optionally re-create it using the 552 new format after rebooting. See malloc.conf(5) for details 553 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 554 NAMESPACE section). 555 55620120328: 557 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 558 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 559 now spelled mips. This is to aid compatibility with third-party 560 software that expects this naming scheme in uname(3). Little-endian 561 settings are unchanged. If you are updating a big-endian mips64 machine 562 from before this change, you may need to set MACHINE_ARCH=mips64 in 563 your environment before the new build system will recognize your machine. 564 56520120306: 566 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 567 platforms. 568 56920120229: 570 Now unix domain sockets behave "as expected" on nullfs(5). Previously 571 nullfs(5) did not pass through all behaviours to the underlying layer, 572 as a result if we bound to a socket on the lower layer we could connect 573 only to the lower path; if we bound to the upper layer we could connect 574 only to the upper path. The new behavior is one can connect to both the 575 lower and the upper paths regardless what layer path one binds to. 576 57720120211: 578 The getifaddrs upgrade path broken with 20111215 has been restored. 579 If you have upgraded in between 20111215 and 20120209 you need to 580 recompile libc again with your kernel. You still need to recompile 581 world to be able to configure CARP but this restriction already 582 comes from 20111215. 583 58420120114: 585 The set_rcvar() function has been removed from /etc/rc.subr. All 586 base and ports rc.d scripts have been updated, so if you have a 587 port installed with a script in /usr/local/etc/rc.d you can either 588 hand-edit the rcvar= line, or reinstall the port. 589 590 An easy way to handle the mass-update of /etc/rc.d: 591 rm /etc/rc.d/* && mergemaster -i 592 59320120109: 594 panic(9) now stops other CPUs in the SMP systems, disables interrupts 595 on the current CPU and prevents other threads from running. 596 This behavior can be reverted using the kern.stop_scheduler_on_panic 597 tunable/sysctl. 598 The new behavior can be incompatible with kern.sync_on_panic. 599 60020111215: 601 The carp(4) facility has been changed significantly. Configuration 602 of the CARP protocol via ifconfig(8) has changed, as well as format 603 of CARP events submitted to devd(8) has changed. See manual pages 604 for more information. The arpbalance feature of carp(4) is currently 605 not supported anymore. 606 607 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 608 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 609 need to be recompiled. 610 61120111122: 612 The acpi_wmi(4) status device /dev/wmistat has been renamed to 613 /dev/wmistat0. 614 61520111108: 616 The option VFS_ALLOW_NONMPSAFE option has been added in order to 617 explicitely support non-MPSAFE filesystems. 618 It is on by default for all supported platform at this present 619 time. 620 62120111101: 622 The broken amd(4) driver has been replaced with esp(4) in the amd64, 623 i386 and pc98 GENERIC kernel configuration files. 624 62520110930: 626 sysinstall has been removed 627 62820110923: 629 The stable/9 branch created in subversion. This corresponds to the 630 RELENG_9 branch in CVS. 631 63220110913: 633 This commit modifies vfs_register() so that it uses a hash 634 calculation to set vfc_typenum, which is enabled by default. 635 The first time a system is booted after this change, the 636 vfc_typenum values will change for all file systems. The 637 main effect of this is a change to the NFS server file handles 638 for file systems that use vfc_typenum in their fsid, such as ZFS. 639 It will, however, prevent vfc_typenum from changing when file 640 systems are loaded in a different order for subsequent reboots. 641 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 642 until you are ready to remount all NFS clients after a reboot. 643 64420110828: 645 Bump the shared library version numbers for libraries that 646 do not use symbol versioning, have changed the ABI compared 647 to stable/8 and which shared library version was not bumped. 648 Done as part of 9.0-RELEASE cycle. 649 65020110815: 651 During the merge of Capsicum features, the fget(9) KPI was modified. 652 This may require the rebuilding of out-of-tree device drivers -- 653 issues have been reported specifically with the nVidia device driver. 654 __FreeBSD_version is bumped to 900041. 655 656 Also, there is a period between 20110811 and 20110814 where the 657 special devices /dev/{stdin,stdout,stderr} did not work correctly. 658 Building world from a kernel during that window may not work. 659 66020110628: 661 The packet filter (pf) code has been updated to OpenBSD 4.5. 662 You need to update userland tools to be in sync with kernel. 663 This update breaks backward compatibility with earlier pfsync(4) 664 versions. Care must be taken when updating redundant firewall setups. 665 66620110608: 667 The following sysctls and tunables are retired on x86 platforms: 668 machdep.hlt_cpus 669 machdep.hlt_logical_cpus 670 The following sysctl is retired: 671 machdep.hyperthreading_allowed 672 The sysctls were supposed to provide a way to dynamically offline and 673 online selected CPUs on x86 platforms, but the implementation has not 674 been reliable especially with SCHED_ULE scheduler. 675 machdep.hyperthreading_allowed tunable is still available to ignore 676 hyperthreading CPUs at OS level. 677 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 678 where X is an APIC ID of a CPU. Be advised, though, that disabling 679 CPUs in non-uniform fashion will result in non-uniform topology and 680 may lead to sub-optimal system performance with SCHED_ULE, which is 681 a default scheduler. 682 68320110607: 684 cpumask_t type is retired and cpuset_t is used in order to describe 685 a mask of CPUs. 686 68720110531: 688 Changes to ifconfig(8) for dynamic address family detection mandate 689 that you are running a kernel of 20110525 or later. Make sure to 690 follow the update procedure to boot a new kernel before installing 691 world. 692 69320110513: 694 Support for sun4v architecture is officially dropped 695 69620110503: 697 Several KPI breaking changes have been committed to the mii(4) layer, 698 the PHY drivers and consequently some Ethernet drivers using mii(4). 699 This means that miibus.ko and the modules of the affected Ethernet 700 drivers need to be recompiled. 701 702 Note to kernel developers: Given that the OUI bit reversion problem 703 was fixed as part of these changes all mii(4) commits related to OUIs, 704 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 705 handling, no longer can be merged verbatim to stable/8 and previous 706 branches. 707 70820110430: 709 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 710 into their kernel configurations along with 'device pci'. 711 71220110427: 713 The default NFS client is now the new NFS client, so fstype "newnfs" 714 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 715 Although mounts via fstype "nfs" will usually work without userland 716 changes, it is recommended that the mount(8) and mount_nfs(8) 717 commands be rebuilt from sources and that a link to mount_nfs called 718 mount_oldnfs be created. The new client is compiled into the 719 kernel with "options NFSCL" and this is needed for diskless root 720 file systems. The GENERIC kernel configs have been changed to use 721 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 722 To use the regular/old client, you can "mount -t oldnfs ...". For 723 a diskless root file system, you must also include a line like: 724 725 vfs.root.mountfrom="oldnfs:" 726 727 in the boot/loader.conf on the root fs on the NFS server to make 728 a diskless root fs use the old client. 729 73020110424: 731 The GENERIC kernels for all architectures now default to the new 732 CAM-based ATA stack. It means that all legacy ATA drivers were 733 removed and replaced by respective CAM drivers. If you are using 734 ATA device names in /etc/fstab or other places, make sure to update 735 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 736 where 'Y's are the sequential numbers starting from zero for each type 737 in order of detection, unless configured otherwise with tunables, 738 see cam(4)). There will be symbolic links created in /dev/ to map 739 old adX devices to the respective adaY. They should provide basic 740 compatibility for file systems mounting in most cases, but they do 741 not support old user-level APIs and do not have respective providers 742 in GEOM. Consider using updated management tools with new device names. 743 744 It is possible to load devices ahci, ata, siis and mvs as modules, 745 but option ATA_CAM should remain in kernel configuration to make ata 746 module work as CAM driver supporting legacy ATA controllers. Device ata 747 still can be used in modular fashion (atacore + ...). Modules atadisk 748 and atapi* are not used and won't affect operation in ATA_CAM mode. 749 Note that to use CAM-based ATA kernel should include CAM devices 750 scbus, pass, da (or explicitly ada), cd and optionally others. All of 751 them are parts of the cam module. 752 753 ataraid(4) functionality is now supported by the RAID GEOM class. 754 To use it you can load geom_raid kernel module and use graid(8) tool 755 for management. Instead of /dev/arX device names, use /dev/raid/rX. 756 757 No kernel config options or code have been removed, so if a problem 758 arises, please report it and optionally revert to the old ATA stack. 759 In order to do it you can remove from the kernel config: 760 options ATA_CAM 761 device ahci 762 device mvs 763 device siis 764 , and instead add back: 765 device atadisk # ATA disk drives 766 device ataraid # ATA RAID drives 767 device atapicd # ATAPI CDROM drives 768 device atapifd # ATAPI floppy drives 769 device atapist # ATAPI tape drives 770 77120110423: 772 The default NFS server has been changed to the new server, which 773 was referred to as the experimental server. If you need to switch 774 back to the old NFS server, you must now put the "-o" option on 775 both the mountd and nfsd commands. This can be done using the 776 mountd_flags and nfs_server_flags rc.conf variables until an 777 update to the rc scripts is committed, which is coming soon. 778 77920110418: 780 The GNU Objective-C runtime library (libobjc), and other Objective-C 781 related components have been removed from the base system. If you 782 require an Objective-C library, please use one of the available ports. 783 78420110331: 785 ath(4) has been split into bus- and device- modules. if_ath contains 786 the HAL, the TX rate control and the network device code. if_ath_pci 787 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 788 contains the AHB glue. Users need to load both if_ath_pci and if_ath 789 in order to use ath on everything else. 790 791 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 792 need to load if_ath and if_ath_pci for ath(4) operation. 793 79420110314: 795 As part of the replacement of sysinstall, the process of building 796 release media has changed significantly. For details, please re-read 797 release(7), which has been updated to reflect the new build process. 798 79920110218: 800 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 801 is the last available version under GPLv2. It brings a number of new 802 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 803 4.1 and SSE 4.2), better support for powerpc64, a number of new 804 directives, and lots of other small improvements. See the ChangeLog 805 file in contrib/binutils for the full details. 806 80720110218: 808 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 809 compliant, and will now use half of hash for authentication. 810 This will break interoperability with all stacks (including all 811 actual FreeBSD versions) who implement 812 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 813 authentication). 814 The only workaround with such peers is to use another HMAC 815 algorithm for IPsec ("phase 2") authentication. 816 81720110207: 818 Remove the uio_yield prototype and symbol. This function has 819 been misnamed since it was introduced and should not be 820 globally exposed with this name. The equivalent functionality 821 is now available using kern_yield(curthread->td_user_pri). 822 The function remains undocumented. 823 82420110112: 825 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 826 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 827 for scalar sysctls is defined but disabled. Code that needs 828 UQUAD to pass the type checking that must compile on older 829 systems where the define is not present can check against 830 __FreeBSD_version >= 900030. 831 832 The system dialog(1) has been replaced with a new version previously 833 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 834 with the previous version, but the libdialog associated with it has 835 a largely incompatible API. As such, the original version of libdialog 836 will be kept temporarily as libodialog, until its base system consumers 837 are replaced or updated. Bump __FreeBSD_version to 900030. 838 83920110103: 840 If you are trying to run make universe on a -stable system, and you get 841 the following warning: 842 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 843 unknown. config(8) likely too old." 844 or something similar to it, then you must upgrade your -stable system 845 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 846 stable/8) or build the config from the latest stable/8 branch and 847 install it on your system. 848 849 Prior to this date, building a current universe on 8-stable system from 850 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 851 error in the first kernel build phase. A new config on those old 852 systems will fix that problem for older versions of -current. 853 85420101228: 855 The TCP stack has been modified to allow Khelp modules to interact with 856 it via helper hook points and store per-connection data in the TCP 857 control block. Bump __FreeBSD_version to 900029. User space tools that 858 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 859 be recompiled. 860 86120101114: 862 Generic IEEE 802.3 annex 31B full duplex flow control support has been 863 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 864 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 865 to take advantage of it instead of using custom implementations. This 866 means that these drivers now no longer unconditionally advertise 867 support for flow control but only do so if flow control is a selected 868 media option. This was implemented in the generic support that way in 869 order to allow flow control to be switched on and off via ifconfig(8) 870 with the PHY specific default to typically off in order to protect 871 from unwanted effects. Consequently, if you used flow control with 872 one of the above mentioned drivers you now need to explicitly enable 873 it, for example via: 874 ifconfig bge0 media auto mediaopt flowcontrol 875 876 Along with the above mentioned changes generic support for setting 877 1000baseT master mode also has been added and brgphy(4), ciphy(4), 878 e1000phy(4) as well as ip1000phy(4) have been converted to take 879 advantage of it. This means that these drivers now no longer take the 880 link0 parameter for selecting master mode but the master media option 881 has to be used instead, for example like in the following: 882 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 883 884 Selection of master mode now is also available with all other PHY 885 drivers supporting 1000baseT. 886 88720101111: 888 The TCP stack has received a significant update to add support for 889 modularised congestion control and generally improve the clarity of 890 congestion control decisions. Bump __FreeBSD_version to 900025. User 891 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 892 sockstat) need to be recompiled. 893 89420101002: 895 The man(1) utility has been replaced by a new version that no longer 896 uses /etc/manpath.config. Please consult man.conf(5) for how to 897 migrate local entries to the new format. 898 89920100928: 900 The copyright strings printed by login(1) and sshd(8) at the time of a 901 new connection have been removed to follow other operating systems and 902 upstream sshd. 903 90420100915: 905 A workaround for a fixed ld bug has been removed in kernel code, 906 so make sure that your system ld is built from sources after 907 revision 210245 from 2010-07-19 (r211583 if building head kernel 908 on stable/8, r211584 for stable/7; both from 2010-08-21). 909 A symptom of incorrect ld version is different addresses for 910 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 911 91220100913: 913 The $ipv6_prefer variable in rc.conf(5) has been split into 914 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 915 916 The $ip6addrctl_policy is a variable to choose a pre-defined 917 address selection policy set by ip6addrctl(8). A value 918 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 919 default is "AUTO". 920 921 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 922 flag (see an entry of 20090926) is set on an interface with no 923 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 924 security reason. If you want IPv6 link-local address on all 925 interfaces by default, set this to "YES". 926 927 The old ipv6_prefer="YES" is equivalent to 928 ipv6_activate_all_interfaces="YES" and 929 ip6addrctl_policy="ipv6_prefer". 930 93120100913: 932 DTrace has grown support for userland tracing. Due to this, DTrace is 933 now i386 and amd64 only. 934 dtruss(1) is now installed by default on those systems and a new 935 kernel module is needed for userland tracing: fasttrap. 936 No changes to your kernel config file are necessary to enable 937 userland tracing, but you might consider adding 'STRIP=' and 938 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 939 to have informative userland stack traces in DTrace (ustack). 940 94120100725: 942 The acpi_aiboost(4) driver has been removed in favor of the new 943 aibs(4) driver. You should update your kernel configuration file. 944 94520100722: 946 BSD grep has been imported to the base system and it is built by 947 default. It is completely BSD licensed, highly GNU-compatible, uses 948 less memory than its GNU counterpart and has a small codebase. 949 However, it is slower than its GNU counterpart, which is mostly 950 noticeable for larger searches, for smaller ones it is measurable 951 but not significant. The reason is complex, the most important factor 952 is that we lack a modern and efficient regex library and GNU 953 overcomes this by optimizing the searches internally. Future work 954 on improving the regex performance is planned, for the meantime, 955 users that need better performance, can build GNU grep instead by 956 setting the WITH_GNU_GREP knob. 957 95820100713: 959 Due to the import of powerpc64 support, all existing powerpc kernel 960 configuration files must be updated with a machine directive like this: 961 machine powerpc powerpc 962 963 In addition, an updated config(8) is required to build powerpc kernels 964 after this change. 965 96620100713: 967 A new version of ZFS (version 15) has been merged to -HEAD. 968 This version uses a python library for the following subcommands: 969 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 970 For full functionality of these commands the following port must 971 be installed: sysutils/py-zfs 972 97320100429: 974 'vm_page's are now hashed by physical address to an array of mutexes. 975 Currently this is only used to serialize access to hold_count. Over 976 time the page queue mutex will be peeled away. This changes the size 977 of pmap on every architecture. And requires all callers of vm_page_hold 978 and vm_page_unhold to be updated. 979 98020100402: 981 WITH_CTF can now be specified in src.conf (not recommended, there 982 are some problems with static executables), make.conf (would also 983 affect ports which do not use GNU make and do not override the 984 compile targets) or in the kernel config (via "makeoptions 985 WITH_CTF=yes"). 986 When WITH_CTF was specified there before this was silently ignored, 987 so make sure that WITH_CTF is not used in places which could lead 988 to unwanted behavior. 989 99020100311: 991 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 992 to allow 32-bit compatibility on non-x86 platforms. All kernel 993 configurations on amd64 and ia64 platforms using these options must 994 be modified accordingly. 995 99620100113: 997 The utmp user accounting database has been replaced with utmpx, 998 the user accounting interface standardized by POSIX. 999 Unfortunately the semantics of utmp and utmpx don't match, 1000 making it practically impossible to support both interfaces. 1001 The user accounting database is used by tools like finger(1), 1002 last(1), talk(1), w(1) and ac(8). 1003 1004 All applications in the base system use utmpx. This means only 1005 local binaries (e.g. from the ports tree) may still use these 1006 utmp database files. These applications must be rebuilt to make 1007 use of utmpx. 1008 1009 After the system has been upgraded, it is safe to remove the old 1010 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 1011 assuming their contents is of no importance anymore. Old wtmp 1012 databases can only be used by last(1) and ac(8) after they have 1013 been converted to the new format using wtmpcvt(1). 1014 101520100108: 1016 Introduce the kernel thread "deadlock resolver" (which can be enabled 1017 via the DEADLKRES option, see NOTES for more details) and the 1018 sleepq_type() function for sleepqueues. 1019 102020091202: 1021 The rc.firewall and rc.firewall6 were unified, and 1022 rc.firewall6 and rc.d/ip6fw were removed. 1023 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 1024 variables are obsoleted. Instead, the following new rc 1025 variables are added to rc.d/ipfw: 1026 1027 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 1028 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 1029 firewall_simple_onet_ipv6, firewall_trusted_ipv6 1030 1031 The meanings correspond to the relevant IPv4 variables. 1032 103320091125: 1034 8.0-RELEASE. 1035 103620091113: 1037 The default terminal emulation for syscons(4) has been changed 1038 from cons25 to xterm on all platforms except pc98. This means 1039 that the /etc/ttys file needs to be updated to ensure correct 1040 operation of applications on the console. 1041 1042 The terminal emulation style can be toggled per window by using 1043 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 1044 options can be used to change the compile-time default back to 1045 cons25. 1046 1047 To prevent graphical artifacts, make sure the TERM environment 1048 variable is set to match the terminal emulation that is being 1049 performed by syscons(4). 1050 105120091109: 1052 The layout of the structure ieee80211req_scan_result has changed. 1053 Applications that require wireless scan results (e.g. ifconfig(8)) 1054 from net80211 need to be recompiled. 1055 1056 Applications such as wpa_supplicant(8) may require a full world 1057 build without using NO_CLEAN in order to get synchronized with the 1058 new structure. 1059 106020091025: 1061 The iwn(4) driver has been updated to support the 5000 and 5150 series. 1062 There's one kernel module for each firmware. Adding "device iwnfw" 1063 to the kernel configuration file means including all three firmware 1064 images inside the kernel. If you want to include just the one for 1065 your wireless card, use the devices iwn4965fw, iwn5000fw or 1066 iwn5150fw. 1067 106820090926: 1069 The rc.d/network_ipv6, IPv6 configuration script has been integrated 1070 into rc.d/netif. The changes are the following: 1071 1072 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 1073 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 1074 Note that both variables need the "inet6" keyword at the head. 1075 1076 Do not set $ipv6_network_interfaces manually if you do not 1077 understand what you are doing. It is not needed in most cases. 1078 1079 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 1080 they are obsolete. 1081 1082 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 1083 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 1084 1085 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 1086 all configured interfaces have "inet6 accept_rtadv" in the 1087 $ifconfig_IF_ipv6. These are for backward compatibility. 1088 1089 3. A new variable $ipv6_prefer has been added. If NO, IPv6 1090 functionality of interfaces with no corresponding 1091 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 1092 and the default address selection policy of ip6addrctl(8) 1093 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 1094 Note that if you want to configure IPv6 functionality on the 1095 disabled interfaces after boot, first you need to clear the flag by 1096 using ifconfig(8) like: 1097 1098 ifconfig em0 inet6 -ifdisabled 1099 1100 If YES, the default address selection policy is set as 1101 IPv6-preferred. 1102 1103 The default value of $ipv6_prefer is NO. 1104 1105 4. If your system need to receive Router Advertisement messages, 1106 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 1107 scripts automatically invoke rtsol(8) when the interface becomes 1108 UP. The Router Advertisement messages are used for SLAAC 1109 (State-Less Address AutoConfiguration). 1110 111120090922: 1112 802.11s D3.03 support was committed. This is incompatible with the 1113 previous code, which was based on D3.0. 1114 111520090912: 1116 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 1117 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 1118 control whether accepting Router Advertisement messages or not. 1119 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 1120 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 1121 The ifconfig(8) utility now supports these flags. 1122 112320090910: 1124 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 1125 mount(8) and -a option for df(1) to see them. 1126 112720090825: 1128 The old tunable hw.bus.devctl_disable has been superseded by 1129 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 1130 replaced by hw.bus.devctl_queue=0. The default for this new tunable 1131 is 1000. 1132 113320090813: 1134 Remove the option STOP_NMI. The default action is now to use NMI only 1135 for KDB via the newly introduced function stop_cpus_hard() and 1136 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 1137 113820090803: 1139 The stable/8 branch created in subversion. This corresponds to the 1140 RELENG_8 branch in CVS. 1141 114220090719: 1143 Bump the shared library version numbers for all libraries that do not 1144 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 1145 __FreeBSD_version to 800105. 1146 114720090714: 1148 Due to changes in the implementation of virtual network stack support, 1149 all network-related kernel modules must be recompiled. As this change 1150 breaks the ABI, bump __FreeBSD_version to 800104. 1151 115220090713: 1153 The TOE interface to the TCP syncache has been modified to remove 1154 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 1155 The cxgb driver is the only TOE consumer affected by this change, and 1156 needs to be recompiled along with the kernel. As this change breaks 1157 the ABI, bump __FreeBSD_version to 800103. 1158 115920090712: 1160 Padding has been added to struct tcpcb, sackhint and tcpstat in 1161 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 1162 maintaining the ABI. However, this change breaks the ABI, so bump 1163 __FreeBSD_version to 800102. User space tools that rely on the size of 1164 any of these structs (e.g. sockstat) need to be recompiled. 1165 116620090630: 1167 The NFS_LEGACYRPC option has been removed along with the old kernel 1168 RPC implementation that this option selected. Kernel configurations 1169 may need to be adjusted. 1170 117120090629: 1172 The network interface device nodes at /dev/net/<interface> have been 1173 removed. All ioctl operations can be performed the normal way using 1174 routing sockets. The kqueue functionality can generally be replaced 1175 with routing sockets. 1176 117720090628: 1178 The documentation from the FreeBSD Documentation Project (Handbook, 1179 FAQ, etc.) is now installed via packages by sysinstall(8) and under 1180 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 1181 118220090624: 1183 The ABI of various structures related to the SYSV IPC API have been 1184 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 1185 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 1186 800100. 1187 118820090622: 1189 Layout of struct vnet has changed as routing related variables were 1190 moved to their own Vimage module. Modules need to be recompiled. Bump 1191 __FreeBSD_version to 800099. 1192 119320090619: 1194 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 1195 respectively. As long as no more than 16 groups per process are used, 1196 no changes should be visible. When more than 16 groups are used, old 1197 binaries may fail if they call getgroups() or getgrouplist() with 1198 statically sized storage. Recompiling will work around this, but 1199 applications should be modified to use dynamically allocated storage 1200 for group arrays as POSIX.1-2008 does not cap an implementation's 1201 number of supported groups at NGROUPS_MAX+1 as previous versions did. 1202 1203 NFS and portalfs mounts may also be affected as the list of groups is 1204 truncated to 16. Users of NFS who use more than 16 groups, should 1205 take care that negative group permissions are not used on the exported 1206 file systems as they will not be reliable unless a GSSAPI based 1207 authentication method is used. 1208 120920090616: 1210 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 1211 option compiles in the support for adaptive spinning for lockmgrs 1212 which want to enable it. The lockinit() function now accepts the flag 1213 LK_ADAPTIVE in order to make the lock object subject to adaptive 1214 spinning when both held in write and read mode. 1215 121620090613: 1217 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 1218 changed. User applications that use this ioctl need to be rebuilt. 1219 122020090611: 1221 The layout of struct thread has changed. Kernel and modules need to 1222 be rebuilt. 1223 122420090608: 1225 The layout of structs ifnet, domain, protosw and vnet_net has changed. 1226 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 1227 122820090602: 1229 window(1) has been removed from the base system. It can now be 1230 installed from ports. The port is called misc/window. 1231 123220090601: 1233 The way we are storing and accessing `routing table' entries has 1234 changed. Programs reading the FIB, like netstat, need to be 1235 re-compiled. 1236 123720090601: 1238 A new netisr implementation has been added for FreeBSD 8. Network 1239 file system modules, such as igmp, ipdivert, and others, should be 1240 rebuilt. 1241 Bump __FreeBSD_version to 800096. 1242 124320090530: 1244 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 1245 more valid. 1246 124720090530: 1248 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 1249 Bump __FreeBSD_version to 800094. 1250 125120090529: 1252 Add mnt_xflag field to 'struct mount'. File system modules need to be 1253 rebuilt. 1254 Bump __FreeBSD_version to 800093. 1255 125620090528: 1257 The compiling option ADAPTIVE_SX has been retired while it has been 1258 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1259 The KPI for sx_init_flags() changes as accepting flags: 1260 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1261 been introduced in order to handle the reversed logic. 1262 Bump __FreeBSD_version to 800092. 1263 126420090527: 1265 Add support for hierarchical jails. Remove global securelevel. 1266 Bump __FreeBSD_version to 800091. 1267 126820090523: 1269 The layout of struct vnet_net has changed, therefore modules 1270 need to be rebuilt. 1271 Bump __FreeBSD_version to 800090. 1272 127320090523: 1274 The newly imported zic(8) produces a new format in the output. Please 1275 run tzsetup(8) to install the newly created data to /etc/localtime. 1276 127720090520: 1278 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1279 hw.usb.* and is now consistent again with previous releases. 1280 128120090520: 1282 802.11 monitor mode support was revised and driver api's were changed. 1283 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1284 of DLT_IEEE802_11. No user-visible data structures were changed but 1285 applications that use DLT_IEEE802_11 may require changes. 1286 Bump __FreeBSD_version to 800088. 1287 128820090430: 1289 The layout of the following structs has changed: sysctl_oid, 1290 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1291 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1292 panics may be experienced. World rebuild is required for 1293 correctly checking networking state from userland. 1294 Bump __FreeBSD_version to 800085. 1295 129620090429: 1297 MLDv2 and Source-Specific Multicast (SSM) have been merged 1298 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1299 The implementation of SSM within FreeBSD's IPv6 stack closely 1300 follows the IPv4 implementation. 1301 1302 For kernel developers: 1303 1304 * The most important changes are that the ip6_output() and 1305 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1306 and this lock has been downgraded to a non-recursive mutex. 1307 1308 * As with the changes to the IPv4 stack to support SSM, filtering 1309 of inbound multicast traffic must now be performed by transport 1310 protocols within the IPv6 stack. This does not apply to TCP and 1311 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1312 1313 * The KPIs used by IPv6 multicast are similar to those used by 1314 the IPv4 stack, with the following differences: 1315 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1316 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1317 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1318 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1319 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1320 for MLDv1 have an additional 'timer' argument which is used to 1321 jitter the initial membership report for the solicited-node 1322 multicast membership on-link. 1323 * This is not strictly needed for MLDv2, which already jitters 1324 its report transmissions. However, the 'timer' argument is 1325 preserved in case MLDv1 is active on the interface. 1326 1327 * The KAME linked-list based IPv6 membership implementation has 1328 been refactored to use a vector similar to that used by the IPv4 1329 stack. 1330 Code which maintains a list of its own multicast memberships 1331 internally, e.g. carp, has been updated to reflect the new 1332 semantics. 1333 1334 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1335 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1336 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1337 implementation constraint which needs to be addressed in HEAD. 1338 1339 For application developers: 1340 1341 * The changes are broadly similar to those made for the IPv4 1342 stack. 1343 1344 * The use of IPv4 and IPv6 multicast socket options on the same 1345 socket, using mapped addresses, HAS NOT been tested or supported. 1346 1347 * There are a number of issues with the implementation of various 1348 IPv6 multicast APIs which need to be resolved in the API surface 1349 before the implementation is fully compatible with KAME userland 1350 use, and these are mostly to do with interface index treatment. 1351 1352 * The literature available discusses the use of either the delta / ASM 1353 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1354 using setsourcefilter(3)/getsourcefilter(3). For more information 1355 please refer to RFC 3768, 'Socket Interface Extensions for 1356 Multicast Source Filters'. 1357 1358 * Applications which use the published RFC 3678 APIs should be fine. 1359 1360 For systems administrators: 1361 1362 * The mtest(8) utility has been refactored to support IPv6, in 1363 addition to IPv4. Interface addresses are no longer accepted 1364 as arguments, their names must be used instead. The utility 1365 will map the interface name to its first IPv4 address as 1366 returned by getifaddrs(3). 1367 1368 * The ifmcstat(8) utility has also been updated to print the MLDv2 1369 endpoint state and source filter lists via sysctl(3). 1370 1371 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1372 loopback of IPv6 multicast datagrams by default; it defaults to 1 1373 to preserve the existing behaviour. Disabling multicast loopback is 1374 recommended for optimal system performance. 1375 1376 * The IPv6 MROUTING code has been changed to examine this sysctl 1377 instead of attempting to perform a group lookup before looping 1378 back forwarded datagrams. 1379 1380 Bump __FreeBSD_version to 800084. 1381 138220090422: 1383 Implement low-level Bluetooth HCI API. 1384 Bump __FreeBSD_version to 800083. 1385 138620090419: 1387 The layout of struct malloc_type, used by modules to register new 1388 memory allocation types, has changed. Most modules will need to 1389 be rebuilt or panics may be experienced. 1390 Bump __FreeBSD_version to 800081. 1391 139220090415: 1393 Anticipate overflowing inp_flags - add inp_flags2. 1394 This changes most offsets in inpcb, so checking v4 connection 1395 state will require a world rebuild. 1396 Bump __FreeBSD_version to 800080. 1397 139820090415: 1399 Add an llentry to struct route and struct route_in6. Modules 1400 embedding a struct route will need to be recompiled. 1401 Bump __FreeBSD_version to 800079. 1402 140320090414: 1404 The size of rt_metrics_lite and by extension rtentry has changed. 1405 Networking administration apps will need to be recompiled. 1406 The route command now supports show as an alias for get, weighting 1407 of routes, sticky and nostick flags to alter the behavior of stateful 1408 load balancing. 1409 Bump __FreeBSD_version to 800078. 1410 141120090408: 1412 Do not use Giant for kbdmux(4) locking. This is wrong and 1413 apparently causing more problems than it solves. This will 1414 re-open the issue where interrupt handlers may race with 1415 kbdmux(4) in polling mode. Typical symptoms include (but 1416 not limited to) duplicated and/or missing characters when 1417 low level console functions (such as gets) are used while 1418 interrupts are enabled (for example geli password prompt, 1419 mountroot prompt etc.). Disabling kbdmux(4) may help. 1420 142120090407: 1422 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1423 kernel modules referencing any of the above need to be recompiled. 1424 Bump __FreeBSD_version to 800075. 1425 142620090320: 1427 GEOM_PART has become the default partition slicer for storage devices, 1428 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1429 introduces some changes: 1430 1431 MSDOS/EBR: the devices created from MSDOS extended partition entries 1432 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1433 to devices with offset-based names. fstabs may need to be modified. 1434 1435 BSD: the "geometry does not match label" warning is harmless in most 1436 cases but it points to problems in file system misalignment with 1437 disk geometry. The "c" partition is now implicit, covers the whole 1438 top-level drive and cannot be (mis)used by users. 1439 1440 General: Kernel dumps are now not allowed to be written to devices 1441 whose partition types indicate they are meant to be used for file 1442 systems (or, in case of MSDOS partitions, as something else than 1443 the "386BSD" type). 1444 1445 Most of these changes date approximately from 200812. 1446 144720090319: 1448 The uscanner(4) driver has been removed from the kernel. This follows 1449 Linux removing theirs in 2.6 and making libusb the default interface 1450 (supported by sane). 1451 145220090319: 1453 The multicast forwarding code has been cleaned up. netstat(1) 1454 only relies on KVM now for printing bandwidth upcall meters. 1455 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1456 ip6_mroute_mod respectively. The config(5) options for statically 1457 compiling this code remain the same, i.e. 'options MROUTING'. 1458 145920090315: 1460 Support for the IFF_NEEDSGIANT network interface flag has been 1461 removed, which means that non-MPSAFE network device drivers are no 1462 longer supported. In particular, if_ar, if_sr, and network device 1463 drivers from the old (legacy) USB stack can no longer be built or 1464 used. 1465 146620090313: 1467 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1468 a bunch of new language catalog files have also been added. 1469 This means that some common libc messages are now localized and 1470 they depend on the LC_MESSAGES environmental variable. 1471 147220090313: 1473 The k8temp(4) driver has been renamed to amdtemp(4) since 1474 support for Family 10 and Family 11 CPU families was added. 1475 147620090309: 1477 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1478 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1479 1480 For kernel developers, the most important changes are that the 1481 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1482 and this lock has been downgraded to a non-recursive mutex. 1483 1484 Transport protocols (UDP, Raw IP) are now responsible for filtering 1485 inbound multicast traffic according to group membership and source 1486 filters. The imo_multicast_filter() KPI exists for this purpose. 1487 Transports which do not use multicast (SCTP, TCP) already reject 1488 multicast by default. Forwarding and receive performance may improve 1489 as a mutex acquisition is no longer needed in the ip_input() 1490 low-level input path. in_addmulti() and in_delmulti() are shimmed 1491 to new KPIs which exist to support SSM in-kernel. 1492 1493 For application developers, it is recommended that loopback of 1494 multicast datagrams be disabled for best performance, as this 1495 will still cause the lock to be taken for each looped-back 1496 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1497 be tuned to 0 to disable loopback by default; it defaults to 1 1498 to preserve the existing behaviour. 1499 1500 For systems administrators, to obtain best performance with 1501 multicast reception and multiple groups, it is always recommended 1502 that a card with a suitably precise hash filter is used. Hash 1503 collisions will still result in the lock being taken within the 1504 transport protocol input path to check group membership. 1505 1506 If deploying FreeBSD in an environment with IGMP snooping switches, 1507 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1508 enabled; this forces 224.0.0.0/24 group membership to be announced 1509 via IGMP. 1510 1511 The size of 'struct igmpstat' has changed; netstat needs to be 1512 recompiled to reflect this. 1513 Bump __FreeBSD_version to 800070. 1514 151520090309: 1516 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1517 updated to use it. This requires a buildworld/installworld in order to 1518 update the library and dependencies (usbconfig, etc). Its advisable to 1519 rebuild all ports which uses libusb. More specific directions are given 1520 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1521 libusb are no longer required and can be removed. 1522 152320090302: 1524 A workaround is committed to allow the creation of System V shared 1525 memory segment of size > 2 GB on the 64-bit architectures. 1526 Due to a limitation of the existing ABI, the shm_segsz member 1527 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1528 wrong for large segments. Note that limits must be explicitly 1529 raised to allow such segments to be created. 1530 153120090301: 1532 The layout of struct ifnet has changed, requiring a rebuild of all 1533 network device driver modules. 1534 153520090227: 1536 The /dev handling for the new USB stack has changed, a 1537 buildworld/installworld is required for libusb20. 1538 153920090223: 1540 The new USB2 stack has now been permanently moved in and all kernel and 1541 module names reverted to their previous values (eg, usb, ehci, ohci, 1542 ums, ...). The old usb stack can be compiled in by prefixing the name 1543 with the letter 'o', the old usb modules have been removed. 1544 Updating entry 20090216 for xorg and 20090215 for libmap may still 1545 apply. 1546 154720090217: 1548 The rc.conf(5) option if_up_delay has been renamed to 1549 defaultroute_delay to better reflect its purpose. If you have 1550 customized this setting in /etc/rc.conf you need to update it to 1551 use the new name. 1552 155320090216: 1554 xorg 7.4 wants to configure its input devices via hald which does not 1555 yet work with USB2. If the keyboard/mouse does not work in xorg then 1556 add 1557 Option "AllowEmptyInput" "off" 1558 to your ServerLayout section. This will cause X to use the configured 1559 kbd and mouse sections from your xorg.conf. 1560 156120090215: 1562 The GENERIC kernels for all architectures now default to the new USB2 1563 stack. No kernel config options or code have been removed so if a 1564 problem arises please report it and optionally revert to the old USB 1565 stack. If you are loading USB kernel modules or have a custom kernel 1566 that includes GENERIC then ensure that usb names are also changed over, 1567 eg uftdi -> usb2_serial_ftdi. 1568 1569 Older programs linked against the ports libusb 0.1 need to be 1570 redirected to the new stack's libusb20. /etc/libmap.conf can 1571 be used for this: 1572 # Map old usb library to new one for usb2 stack 1573 libusb-0.1.so.8 libusb20.so.1 1574 157520090209: 1576 All USB ethernet devices now attach as interfaces under the name ueN 1577 (eg. ue0). This is to provide a predictable name as vendors often 1578 change usb chipsets in a product without notice. 1579 158020090203: 1581 The ichsmb(4) driver has been changed to require SMBus slave 1582 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1583 All of the other SMBus controller drivers require left-justified 1584 slave addresses, so this change makes all the drivers provide the 1585 same interface. 1586 158720090201: 1588 INET6 statistics (struct ip6stat) was updated. 1589 netstat(1) needs to be recompiled. 1590 159120090119: 1592 NTFS has been removed from GENERIC kernel on amd64 to match 1593 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1594 will load ntfs.ko module automatically when NTFS support is 1595 actually needed, unless ntfs.ko is not installed or security 1596 level prohibits loading kernel modules. If either is the case, 1597 "options NTFS" has to be added into kernel config. 1598 159920090115: 1600 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1601 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1602 800061. User space tools that rely on the size of struct tcpcb in 1603 tcp_var.h (e.g. sockstat) need to be recompiled. 1604 160520081225: 1606 ng_tty(4) module updated to match the new TTY subsystem. 1607 Due to API change, user-level applications must be updated. 1608 New API support added to mpd5 CVS and expected to be present 1609 in next mpd5.3 release. 1610 161120081219: 1612 With __FreeBSD_version 800060 the makefs tool is part of 1613 the base system (it was a port). 1614 161520081216: 1616 The afdata and ifnet locks have been changed from mutexes to 1617 rwlocks, network modules will need to be re-compiled. 1618 161920081214: 1620 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1621 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1622 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1623 architecture and 40 bytes on 64-bit architecture. The userland 1624 applications "arp" and "ndp" have been updated accordingly. 1625 The output from "netstat -r" shows only routing entries and 1626 none of the L2 information. 1627 162820081130: 1629 __FreeBSD_version 800057 marks the switchover from the 1630 binary ath hal to source code. Users must add the line: 1631 1632 options AH_SUPPORT_AR5416 1633 1634 to their kernel config files when specifying: 1635 1636 device ath_hal 1637 1638 The ath_hal module no longer exists; the code is now compiled 1639 together with the driver in the ath module. It is now 1640 possible to tailor chip support (i.e. reduce the set of chips 1641 and thereby the code size); consult ath_hal(4) for details. 1642 164320081121: 1644 __FreeBSD_version 800054 adds memory barriers to 1645 <machine/atomic.h>, new interfaces to ifnet to facilitate 1646 multiple hardware transmit queues for cards that support 1647 them, and a lock-less ring-buffer implementation to 1648 enable drivers to more efficiently manage queueing of 1649 packets. 1650 165120081117: 1652 A new version of ZFS (version 13) has been merged to -HEAD. 1653 This version has zpool attribute "listsnapshots" off by 1654 default, which means "zfs list" does not show snapshots, 1655 and is the same as Solaris behavior. 1656 165720081028: 1658 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1659 166020081009: 1661 The uhci, ohci, ehci and slhci USB Host controller drivers have 1662 been put into separate modules. If you load the usb module 1663 separately through loader.conf you will need to load the 1664 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1665 controller add the following to loader.conf: 1666 1667 uhci_load="YES" 1668 ehci_load="YES" 1669 167020081009: 1671 The ABI used by the PMC toolset has changed. Please keep 1672 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1673 sync. 1674 167520081009: 1676 atapci kernel module now includes only generic PCI ATA 1677 driver. AHCI driver moved to ataahci kernel module. 1678 All vendor-specific code moved into separate kernel modules: 1679 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1680 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1681 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1682 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1683 168420080820: 1685 The TTY subsystem of the kernel has been replaced by a new 1686 implementation, which provides better scalability and an 1687 improved driver model. Most common drivers have been migrated to 1688 the new TTY subsystem, while others have not. The following 1689 drivers have not yet been ported to the new TTY layer: 1690 1691 PCI/ISA: 1692 cy, digi, rc, rp, sio 1693 1694 USB: 1695 ubser, ucycom 1696 1697 Line disciplines: 1698 ng_h4, ng_tty, ppp, sl, snp 1699 1700 Adding these drivers to your kernel configuration file shall 1701 cause compilation to fail. 1702 170320080818: 1704 ntpd has been upgraded to 4.2.4p5. 1705 170620080801: 1707 OpenSSH has been upgraded to 5.1p1. 1708 1709 For many years, FreeBSD's version of OpenSSH preferred DSA 1710 over RSA for host and user authentication keys. With this 1711 upgrade, we've switched to the vendor's default of RSA over 1712 DSA. This may cause upgraded clients to warn about unknown 1713 host keys even for previously known hosts. Users should 1714 follow the usual procedure for verifying host keys before 1715 accepting the RSA key. 1716 1717 This can be circumvented by setting the "HostKeyAlgorithms" 1718 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1719 command line. 1720 1721 Please note that the sequence of keys offered for 1722 authentication has been changed as well. You may want to 1723 specify IdentityFile in a different order to revert this 1724 behavior. 1725 172620080713: 1727 The sio(4) driver has been removed from the i386 and amd64 1728 kernel configuration files. This means uart(4) is now the 1729 default serial port driver on those platforms as well. 1730 1731 To prevent collisions with the sio(4) driver, the uart(4) driver 1732 uses different names for its device nodes. This means the 1733 onboard serial port will now most likely be called "ttyu0" 1734 instead of "ttyd0". You may need to reconfigure applications to 1735 use the new device names. 1736 1737 When using the serial port as a boot console, be sure to update 1738 /boot/device.hints and /etc/ttys before booting the new kernel. 1739 If you forget to do so, you can still manually specify the hints 1740 at the loader prompt: 1741 1742 set hint.uart.0.at="isa" 1743 set hint.uart.0.port="0x3F8" 1744 set hint.uart.0.flags="0x10" 1745 set hint.uart.0.irq="4" 1746 boot -s 1747 174820080609: 1749 The gpt(8) utility has been removed. Use gpart(8) to partition 1750 disks instead. 1751 175220080603: 1753 The version that Linuxulator emulates was changed from 2.4.2 1754 to 2.6.16. If you experience any problems with Linux binaries 1755 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1756 if it fixes the problem contact emulation mailing list. 1757 175820080525: 1759 ISDN4BSD (I4B) was removed from the src tree. You may need to 1760 update a your kernel configuration and remove relevant entries. 1761 176220080509: 1763 I have checked in code to support multiple routing tables. 1764 See the man pages setfib(1) and setfib(2). 1765 This is a hopefully backwards compatible version, 1766 but to make use of it you need to compile your kernel 1767 with options ROUTETABLES=2 (or more up to 16). 1768 176920080420: 1770 The 802.11 wireless support was redone to enable multi-bss 1771 operation on devices that are capable. The underlying device 1772 is no longer used directly but instead wlanX devices are 1773 cloned with ifconfig. This requires changes to rc.conf files. 1774 For example, change: 1775 ifconfig_ath0="WPA DHCP" 1776 to 1777 wlans_ath0=wlan0 1778 ifconfig_wlan0="WPA DHCP" 1779 see rc.conf(5) for more details. In addition, mergemaster of 1780 /etc/rc.d is highly recommended. Simultaneous update of userland 1781 and kernel wouldn't hurt either. 1782 1783 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1784 modules were merged into the base wlan module. All references 1785 to these modules (e.g. in kernel config files) must be removed. 1786 178720080408: 1788 psm(4) has gained write(2) support in native operation level. 1789 Arbitrary commands can be written to /dev/psm%d and status can 1790 be read back from it. Therefore, an application is responsible 1791 for status validation and error recovery. It is a no-op in 1792 other operation levels. 1793 179420080312: 1795 Support for KSE threading has been removed from the kernel. To 1796 run legacy applications linked against KSE libmap.conf may 1797 be used. The following libmap.conf may be used to ensure 1798 compatibility with any prior release: 1799 1800 libpthread.so.1 libthr.so.1 1801 libpthread.so.2 libthr.so.2 1802 libkse.so.3 libthr.so.3 1803 180420080301: 1805 The layout of struct vmspace has changed. This affects libkvm 1806 and any executables that link against libkvm and use the 1807 kvm_getprocs() function. In particular, but not exclusively, 1808 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1809 The effects are minimal, but it's advisable to upgrade world 1810 nonetheless. 1811 181220080229: 1813 The latest em driver no longer has support in it for the 1814 82575 adapter, this is now moved to the igb driver. The 1815 split was done to make new features that are incompatible 1816 with older hardware easier to do. 1817 181820080220: 1819 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1820 likewise the kernel option is now GEOM_LINUX_LVM. 1821 182220080211: 1823 The default NFS mount mode has changed from UDP to TCP for 1824 increased reliability. If you rely on (insecurely) NFS 1825 mounting across a firewall you may need to update your 1826 firewall rules. 1827 182820080208: 1829 Belatedly note the addition of m_collapse for compacting 1830 mbuf chains. 1831 183220080126: 1833 The fts(3) structures have been changed to use adequate 1834 integer types for their members and so to be able to cope 1835 with huge file trees. The old fts(3) ABI is preserved 1836 through symbol versioning in libc, so third-party binaries 1837 using fts(3) should still work, although they will not take 1838 advantage of the extended types. At the same time, some 1839 third-party software might fail to build after this change 1840 due to unportable assumptions made in its source code about 1841 fts(3) structure members. Such software should be fixed 1842 by its vendor or, in the worst case, in the ports tree. 1843 FreeBSD_version 800015 marks this change for the unlikely 1844 case that a portable fix is impossible. 1845 184620080123: 1847 To upgrade to -current after this date, you must be running 1848 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1849 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1850 185120071128: 1852 The ADAPTIVE_GIANT kernel option has been retired because its 1853 functionality is the default now. 1854 185520071118: 1856 The AT keyboard emulation of sunkbd(4) has been turned on 1857 by default. In order to make the special symbols of the Sun 1858 keyboards driven by sunkbd(4) work under X these now have 1859 to be configured the same way as Sun USB keyboards driven 1860 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1861 1862 Option "XkbLayout" "us" 1863 Option "XkbRules" "xorg" 1864 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1865 186620071024: 1867 It has been decided that it is desirable to provide ABI 1868 backwards compatibility to the FreeBSD 4/5/6 versions of the 1869 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1870 broken with the introduction of PCI domain support (see the 1871 20070930 entry). Unfortunately, this required the ABI of 1872 PCIOCGETCONF to be broken again in order to be able to 1873 provide backwards compatibility to the old version of that 1874 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1875 again. As for prominent ports this affects neither pciutils 1876 nor xorg-server this time, the hal port needs to be rebuilt 1877 however. 1878 187920071020: 1880 The misnamed kthread_create() and friends have been renamed 1881 to kproc_create() etc. Many of the callers already 1882 used kproc_start().. 1883 I will return kthread_create() and friends in a while 1884 with implementations that actually create threads, not procs. 1885 Renaming corresponds with version 800002. 1886 188720071010: 1888 RELENG_7 branched. 1889 1890COMMON ITEMS: 1891 1892 General Notes 1893 ------------- 1894 Avoid using make -j when upgrading. While generally safe, there are 1895 sometimes problems using -j to upgrade. If your upgrade fails with 1896 -j, please try again without -j. From time to time in the past there 1897 have been problems using -j with buildworld and/or installworld. This 1898 is especially true when upgrading between "distant" versions (eg one 1899 that cross a major release boundary or several minor releases, or when 1900 several months have passed on the -current branch). 1901 1902 Sometimes, obscure build problems are the result of environment 1903 poisoning. This can happen because the make utility reads its 1904 environment when searching for values for global variables. To run 1905 your build attempts in an "environmental clean room", prefix all make 1906 commands with 'env -i '. See the env(1) manual page for more details. 1907 1908 When upgrading from one major version to another it is generally best 1909 to upgrade to the latest code in the currently installed branch first, 1910 then do an upgrade to the new branch. This is the best-tested upgrade 1911 path, and has the highest probability of being successful. Please try 1912 this approach before reporting problems with a major version upgrade. 1913 1914 When upgrading a live system, having a root shell around before 1915 installing anything can help undo problems. Not having a root shell 1916 around can lead to problems if pam has changed too much from your 1917 starting point to allow continued authentication after the upgrade. 1918 1919 ZFS notes 1920 --------- 1921 When upgrading the boot ZFS pool to a new version, always follow 1922 these two steps: 1923 1924 1.) recompile and reinstall the ZFS boot loader and boot block 1925 (this is part of "make buildworld" and "make installworld") 1926 1927 2.) update the ZFS boot block on your boot drive 1928 1929 The following example updates the ZFS boot block on the first 1930 partition (freebsd-boot) of a GPT partitioned drive ad0: 1931 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1932 1933 Non-boot pools do not need these updates. 1934 1935 To build a kernel 1936 ----------------- 1937 If you are updating from a prior version of FreeBSD (even one just 1938 a few days old), you should follow this procedure. It is the most 1939 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1940 1941 make kernel-toolchain 1942 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1943 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1944 1945 To test a kernel once 1946 --------------------- 1947 If you just want to boot a kernel once (because you are not sure 1948 if it works, or if you want to boot a known bad kernel to provide 1949 debugging information) run 1950 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1951 nextboot -k testkernel 1952 1953 To just build a kernel when you know that it won't mess you up 1954 -------------------------------------------------------------- 1955 This assumes you are already running a CURRENT system. Replace 1956 ${arch} with the architecture of your machine (e.g. "i386", 1957 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1958 1959 cd src/sys/${arch}/conf 1960 config KERNEL_NAME_HERE 1961 cd ../compile/KERNEL_NAME_HERE 1962 make depend 1963 make 1964 make install 1965 1966 If this fails, go to the "To build a kernel" section. 1967 1968 To rebuild everything and install it on the current system. 1969 ----------------------------------------------------------- 1970 # Note: sometimes if you are running current you gotta do more than 1971 # is listed here if you are upgrading from a really old current. 1972 1973 <make sure you have good level 0 dumps> 1974 make buildworld 1975 make kernel KERNCONF=YOUR_KERNEL_HERE 1976 [1] 1977 <reboot in single user> [3] 1978 mergemaster -Fp [5] 1979 make installworld 1980 mergemaster -Fi [4] 1981 make delete-old [6] 1982 <reboot> 1983 1984 To cross-install current onto a separate partition 1985 -------------------------------------------------- 1986 # In this approach we use a separate partition to hold 1987 # current's root, 'usr', and 'var' directories. A partition 1988 # holding "/", "/usr" and "/var" should be about 2GB in 1989 # size. 1990 1991 <make sure you have good level 0 dumps> 1992 <boot into -stable> 1993 make buildworld 1994 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1995 <maybe newfs current's root partition> 1996 <mount current's root partition on directory ${CURRENT_ROOT}> 1997 make installworld DESTDIR=${CURRENT_ROOT} -DDB_FROM_SRC 1998 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1999 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 2000 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 2001 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 2002 <reboot into current> 2003 <do a "native" rebuild/install as described in the previous section> 2004 <maybe install compatibility libraries from ports/misc/compat*> 2005 <reboot> 2006 2007 2008 To upgrade in-place from stable to current 2009 ---------------------------------------------- 2010 <make sure you have good level 0 dumps> 2011 make buildworld [9] 2012 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 2013 [1] 2014 <reboot in single user> [3] 2015 mergemaster -Fp [5] 2016 make installworld 2017 mergemaster -Fi [4] 2018 make delete-old [6] 2019 <reboot> 2020 2021 Make sure that you've read the UPDATING file to understand the 2022 tweaks to various things you need. At this point in the life 2023 cycle of current, things change often and you are on your own 2024 to cope. The defaults can also change, so please read ALL of 2025 the UPDATING entries. 2026 2027 Also, if you are tracking -current, you must be subscribed to 2028 freebsd-current@freebsd.org. Make sure that before you update 2029 your sources that you have read and understood all the recent 2030 messages there. If in doubt, please track -stable which has 2031 much fewer pitfalls. 2032 2033 [1] If you have third party modules, such as vmware, you 2034 should disable them at this point so they don't crash your 2035 system on reboot. 2036 2037 [3] From the bootblocks, boot -s, and then do 2038 fsck -p 2039 mount -u / 2040 mount -a 2041 cd src 2042 adjkerntz -i # if CMOS is wall time 2043 Also, when doing a major release upgrade, it is required that 2044 you boot into single user mode to do the installworld. 2045 2046 [4] Note: This step is non-optional. Failure to do this step 2047 can result in a significant reduction in the functionality of the 2048 system. Attempting to do it by hand is not recommended and those 2049 that pursue this avenue should read this file carefully, as well 2050 as the archives of freebsd-current and freebsd-hackers mailing lists 2051 for potential gotchas. The -U option is also useful to consider. 2052 See mergemaster(8) for more information. 2053 2054 [5] Usually this step is a noop. However, from time to time 2055 you may need to do this if you get unknown user in the following 2056 step. It never hurts to do it all the time. You may need to 2057 install a new mergemaster (cd src/usr.sbin/mergemaster && make 2058 install) after the buildworld before this step if you last updated 2059 from current before 20130425 or from -stable before 20130430. 2060 2061 [6] This only deletes old files and directories. Old libraries 2062 can be deleted by "make delete-old-libs", but you have to make 2063 sure that no program is using those libraries anymore. 2064 2065 [8] In order to have a kernel that can run the 4.x binaries needed to 2066 do an installworld, you must include the COMPAT_FREEBSD4 option in 2067 your kernel. Failure to do so may leave you with a system that is 2068 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 2069 required to run the 5.x binaries on more recent kernels. And so on 2070 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 2071 2072 Make sure that you merge any new devices from GENERIC since the 2073 last time you updated your kernel config file. 2074 2075 [9] When checking out sources, you must include the -P flag to have 2076 cvs prune empty directories. 2077 2078 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 2079 "?=" instead of the "=" assignment operator, so that buildworld can 2080 override the CPUTYPE if it needs to. 2081 2082 MAKEOBJDIRPREFIX must be defined in an environment variable, and 2083 not on the command line, or in /etc/make.conf. buildworld will 2084 warn if it is improperly defined. 2085FORMAT: 2086 2087This file contains a list, in reverse chronological order, of major 2088breakages in tracking -current. It is not guaranteed to be a complete 2089list of such breakages, and only contains entries since October 10, 2007. 2090If you need to see UPDATING entries from before that date, you will need 2091to fetch an UPDATING file from an older FreeBSD release. 2092 2093Copyright information: 2094 2095Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 2096 2097Redistribution, publication, translation and use, with or without 2098modification, in full or in part, in any form or format of this 2099document are permitted without further permission from the author. 2100 2101THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 2102IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 2103WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2104DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 2105INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2106(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2107SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2108HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2109STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2110IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2111POSSIBILITY OF SUCH DAMAGE. 2112 2113Contact Warner Losh if you have any questions about your use of 2114this document. 2115 2116$FreeBSD$ 2117