UPDATING revision 273415
1Updating Information for FreeBSD current users 2 3This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>. 4See end of file for further details. For commonly done items, please see the 5COMMON ITEMS: section later in the file. These instructions assume that you 6basically know what you are doing. If not, then please consult the FreeBSD 7handbook: 8 9 http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html 10 11Items affecting the ports and packages system can be found in 12/usr/ports/UPDATING. Please read that file before running portupgrade. 13 14NOTE: FreeBSD has switched from gcc to clang. If you have trouble bootstrapping 15from older versions of FreeBSD, try WITHOUT_CLANG to bootstrap to the tip of 16stable/10, and then rebuild without this option. The bootstrap process from 17older version of current is a bit fragile. 18 1920141021: p10 FreeBSD-SA-14:20.rtsold 20 FreeBSD-SA-14:21.routed 21 FreeBSD-SA-14:22.namei 22 FreeBSD-SA-14:23.openssl 23 24 Fix rtsold(8) remote buffer overflow vulnerability. [SA-14:20] 25 26 Fix routed(8) remote denial of service vulnerability. [SA-14:21] 27 28 Fix memory leak in sandboxed namei lookup. [SA-14:22] 29 30 Fix OpenSSL multiple vulnerabilities. [SA-14:23] 31 3220140916: p9 FreeBSD-SA-14:19.tcp 33 Fix Denial of Service in TCP packet processing. [SA-14:19] 34 3520140909: p8 FreeBSD-SA-14:18.openssl 36 Fix OpenSSL multiple vulnerabilities. [SA-14:18] 37 3820140708: p7 FreeBSD-SA-14:17.kmem 39 Fix kernel memory disclosure in control messages and SCTP 40 notifications. [SA-14:17] 41 4220140624: p6 FreeBSD-SA-14:15.iconv 43 FreeBSD-SA-14:16.file 44 FreeBSD-EN-14:07.pmap 45 46 Fix iconv(3) NULL pointer dereference and out-of-bounds array 47 access. [SA-14:15] 48 49 Fix multiple vulnerabilities in file(1) and libmagic(3). 50 [SA-14:16] 51 52 Worked around bug with PCID implementation. [EN-14:07] 53 5420140605: p5 FreeBSD-SA-14:14.openssl 55 Fix OpenSSL multiple vulnerabilities. [SA-14:14] 56 5720140603: p4 FreeBSD-SA-14:11.sendmail 58 FreeBSD-SA-14:13.pam 59 FreeBSD-EN-14:06.exec 60 61 Fix sendmail improper close-on-exec flag handling. [SA-14:11] 62 63 Fix incorrect error handling in PAM policy parser. [SA-14:13] 64 65 Fix triple-fault when executing from a threaded process. 66 [EN-14:06] 67 6820140513: p3 FreeBSD-SA-14:10.openssl 69 FreeBSD-EN-14:05.ciss 70 71 Fix OpenSSL NULL pointer deference vulnerability. [SA-14:10] 72 73 Fix data corruption with ciss(4). [EN-14:05] 74 7520140430: p2 FreeBSD-SA-14:07.devfs 76 FreeBSD-SA-14:08.tcp 77 FreeBSD-SA-14:09.openssl 78 79 Fix devfs rules not applied by default for jails. [SA-14:07] 80 81 Fix TCP reassembly vulnerability. [SA-14:08] 82 83 Fix OpenSSL use-after-free vulnerability. [SA-14:09] 84 8520140408: p1 FreeBSD-SA-14:05.nfsserver 86 FreeBSD-SA-14:06.openssl 87 Fix deadlock in the NFS server. [SA-14:05] 88 89 Fix multiple vulnerabilities in OpenSSL. [SA-14:06] 90 9120131223: 92 The behavior of gss_pseudo_random() for the krb5 mechanism 93 has changed, for applications requesting a longer random string 94 than produced by the underlying enctype's pseudo-random() function. 95 In particular, the random string produced from a session key of 96 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 97 be different at the 17th octet and later, after this change. 98 The counter used in the PRF+ construction is now encoded as a 99 big-endian integer in accordance with RFC 4402. 100 10120131031: 102 The default version of mtree is nmtree which is obtained from 103 NetBSD. The output is generally the same, but may vary 104 slightly. If you found you need identical output adding 105 "-F freebsd9" to the command line should do the trick. For the 106 time being, the old mtree is available as fmtree. 107 10820131014: 109 libbsdyml has been renamed to libyaml and moved to /usr/lib/private. 110 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg 111 1.1.4_8 and verify bsdyml not linked in, before running "make 112 delete-old-libs": 113 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean 114 or 115 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml 116 11720131010: 118 The rc.d/jail script has been updated to support jail(8) 119 configuration file. The "jail_<jname>_*" rc.conf(5) variables 120 for per-jail configuration are automatically converted to 121 /var/run/jail.<jname>.conf before the jail(8) utility is invoked. 122 This is transparently backward compatible. See below about some 123 incompatibilities and rc.conf(5) manual page for more details. 124 125 These variables are now deprecated in favor of jail(8) configuration 126 file. One can use "rc.d/jail config <jname>" command to generate 127 a jail(8) configuration file in /var/run/jail.<jname>.conf without 128 running the jail(8) utility. The default pathname of the 129 configuration file is /etc/jail.conf and can be specified by 130 using $jail_conf or $jail_<jname>_conf variables. 131 132 Please note that jail_devfs_ruleset accepts an integer at 133 this moment. Please consider to rewrite the ruleset name 134 with an integer. 135 13620130930: 137 BIND has been removed from the base system. If all you need 138 is a local resolver, simply enable and start the local_unbound 139 service instead. Otherwise, several versions of BIND are 140 available in the ports tree. The dns/bind99 port is one example. 141 142 With this change, nslookup(1) and dig(1) are no longer in the base 143 system. Users should instead use host(1) and drill(1) which are 144 in the base system. Alternatively, nslookup and dig can 145 be obtained by installing the dns/bind-tools port. 146 14720130916: 148 With the addition of unbound(8), a new unbound user is now 149 required during installworld. "mergemaster -p" can be used to 150 add the user prior to installworld, as documented in the handbook. 151 15220130911: 153 OpenSSH is now built with DNSSEC support, and will by default 154 silently trust signed SSHFP records. This can be controlled with 155 the VerifyHostKeyDNS client configuration setting. DNSSEC support 156 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 157 15820130906: 159 The GNU Compiler Collection and C++ standard library (libstdc++) 160 are no longer built by default on platforms where clang is the system 161 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 162 options in src.conf. 163 16420130905: 165 The PROCDESC kernel option is now part of the GENERIC kernel 166 configuration and is required for the rwhod(8) to work. 167 If you are using custom kernel configuration, you should include 168 'options PROCDESC'. 169 17020130905: 171 The API and ABI related to the Capsicum framework was modified 172 in backward incompatible way. The userland libraries and programs 173 have to be recompiled to work with the new kernel. This includes the 174 following libraries and programs, but the whole buildworld is 175 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 176 kdump, procstat, rwho, rwhod, uniq. 177 17820130903: 179 AES-NI intrinsic support has been added to gcc. The AES-NI module 180 has been updated to use this support. A new gcc is required to build 181 the aesni module on both i386 and amd64. 182 18320130821: 184 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 185 Thus "device padlock_rng" and "device rdrand_rng" should be 186 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 187 18820130813: 189 WITH_ICONV has been split into two feature sets. WITH_ICONV now 190 enables just the iconv* functionality and is now on by default. 191 WITH_LIBICONV_COMPAT enables the libiconv api and link time 192 compatability. Set WITHOUT_ICONV to build the old way. 193 If you have been using WITH_ICONV before, you will very likely 194 need to turn on WITH_LIBICONV_COMPAT. 195 19620130806: 197 INVARIANTS option now enables DEBUG for code with OpenSolaris and 198 Illumos origin, including ZFS. If you have INVARIANTS in your 199 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 200 explicitly. 201 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 202 locks if WITNESS option was set. Because that generated a lot of 203 witness(9) reports and all of them were believed to be false 204 positives, this is no longer done. New option OPENSOLARIS_WITNESS 205 can be used to achieve the previous behavior. 206 20720130806: 208 Timer values in IPv6 data structures now use time_uptime instead 209 of time_second. Although this is not a user-visible functional 210 change, userland utilities which directly use them---ndp(8), 211 rtadvd(8), and rtsold(8) in the base system---need to be updated 212 to r253970 or later. 213 21420130802: 215 find -delete can now delete the pathnames given as arguments, 216 instead of only files found below them or if the pathname did 217 not contain any slashes. Formerly, the following error message 218 would result: 219 220 find: -delete: <path>: relative path potentially not safe 221 222 Deleting the pathnames given as arguments can be prevented 223 without error messages using -mindepth 1 or by changing 224 directory and passing "." as argument to find. This works in the 225 old as well as the new version of find. 226 22720130726: 228 Behavior of devfs rules path matching has been changed. 229 Pattern is now always matched against fully qualified devfs 230 path and slash characters must be explicitly matched by 231 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 232 subdirectories must be reviewed. 233 23420130716: 235 The default ARM ABI has changed to the ARM EABI. The old ABI is 236 incompatible with the ARM EABI and all programs and modules will 237 need to be rebuilt to work with a new kernel. 238 239 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 240 241 NOTE: Support for the old ABI will be removed in the future and 242 users are advised to upgrade. 243 24420130709: 245 pkg_install has been disconnected from the build if you really need it 246 you should add WITH_PKGTOOLS in your src.conf(5). 247 24820130709: 249 Most of network statistics structures were changed to be able 250 keep 64-bits counters. Thus all tools, that work with networking 251 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 252 25320130629: 254 Fix targets that run multiple make's to use && rather than ; 255 so that subsequent steps depend on success of previous. 256 257 NOTE: if building 'universe' with -j* on stable/8 or stable/9 258 it would be better to start the build using bmake, to avoid 259 overloading the machine. 260 26120130618: 262 Fix a bug that allowed a tracing process (e.g. gdb) to write 263 to a memory-mapped file in the traced process's address space 264 even if neither the traced process nor the tracing process had 265 write access to that file. 266 26720130615: 268 CVS has been removed from the base system. An exact copy 269 of the code is available from the devel/cvs port. 270 27120130613: 272 Some people report the following error after the switch to bmake: 273 274 make: illegal option -- J 275 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 276 ... 277 *** [buildworld] Error code 2 278 279 this likely due to an old instance of make in 280 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 281 which src/Makefile will use that blindly, if it exists, so if 282 you see the above error: 283 284 rm -rf `make -V MAKEPATH` 285 286 should resolve it. 287 28820130516: 289 Use bmake by default. 290 Whereas before one could choose to build with bmake via 291 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 292 make. The goal is to remove these knobs for 10-RELEASE. 293 294 It is worth noting that bmake (like gmake) treats the command 295 line as the unit of failure, rather than statements within the 296 command line. Thus '(cd some/where && dosomething)' is safer 297 than 'cd some/where; dosomething'. The '()' allows consistent 298 behavior in parallel build. 299 30020130429: 301 Fix a bug that allows NFS clients to issue READDIR on files. 302 30320130426: 304 The WITHOUT_IDEA option has been removed because 305 the IDEA patent expired. 306 30720130426: 308 The sysctl which controls TRIM support under ZFS has been renamed 309 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 310 enabled by default. 311 31220130425: 313 The mergemaster command now uses the default MAKEOBJDIRPREFIX 314 rather than creating it's own in the temporary directory in 315 order allow access to bootstrapped versions of tools such as 316 install and mtree. When upgrading from version of FreeBSD where 317 the install command does not support -l, you will need to 318 install a new mergemaster command if mergemaster -p is required. 319 This can be accomplished with the command (cd src/usr.sbin/mergemaster 320 && make install). 321 32220130404: 323 Legacy ATA stack, disabled and replaced by new CAM-based one since 324 FreeBSD 9.0, completely removed from the sources. Kernel modules 325 atadisk and atapi*, user-level tools atacontrol and burncd are 326 removed. Kernel option `options ATA_CAM` is now permanently enabled 327 and removed. 328 32920130319: 330 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 331 and socketpair(2). Software, in particular Kerberos, may 332 automatically detect and use these during building. The resulting 333 binaries will not work on older kernels. 334 33520130308: 336 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 337 information, see the respective 20130304 entry). 338 33920130304: 340 Recent commits to callout(9) changed the size of struct callout, 341 so the KBI is probably heavily disturbed. Also, some functions 342 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 343 by macros. Every kernel module using it won't load, so rebuild 344 is requested. 345 346 The ctl device has been re-enabled in GENERIC for i386 and amd64, 347 but does not initialize by default (because of the new CTL_DISABLE 348 option) to save memory. To re-enable it, remove the CTL_DISABLE 349 option from the kernel config file or set kern.cam.ctl.disable=0 350 in /boot/loader.conf. 351 35220130301: 353 The ctl device has been disabled in GENERIC for i386 and amd64. 354 This was done due to the extra memory being allocated at system 355 initialisation time by the ctl driver which was only used if 356 a CAM target device was created. This makes a FreeBSD system 357 unusable on 128MB or less of RAM. 358 35920130208: 360 A new compression method (lz4) has been merged to -HEAD. Please 361 refer to zpool-features(7) for more information. 362 363 Please refer to the "ZFS notes" section of this file for information 364 on upgrading boot ZFS pools. 365 36620130129: 367 A BSD-licensed patch(1) variant has been added and is installed 368 as bsdpatch, being the GNU version the default patch. 369 To inverse the logic and use the BSD-licensed one as default, 370 while having the GNU version installed as gnupatch, rebuild 371 and install world with the WITH_BSD_PATCH knob set. 372 37320130121: 374 Due to the use of the new -l option to install(1) during build 375 and install, you must take care not to directly set the INSTALL 376 make variable in your /etc/make.conf, /etc/src.conf, or on the 377 command line. If you wish to use the -C flag for all installs 378 you may be able to add INSTALL+=-C to /etc/make.conf or 379 /etc/src.conf. 380 38120130118: 382 The install(1) option -M has changed meaning and now takes an 383 argument that is a file or path to append logs to. In the 384 unlikely event that -M was the last option on the command line 385 and the command line contained at least two files and a target 386 directory the first file will have logs appended to it. The -M 387 option served little practical purpose in the last decade so its 388 use is expected to be extremely rare. 389 39020121223: 391 After switching to Clang as the default compiler some users of ZFS 392 on i386 systems started to experience stack overflow kernel panics. 393 Please consider using 'options KSTACK_PAGES=4' in such configurations. 394 39520121222: 396 GEOM_LABEL now mangles label names read from file system metadata. 397 Mangling affect labels containing spaces, non-printable characters, 398 '%' or '"'. Device names in /etc/fstab and other places may need to 399 be updated. 400 40120121217: 402 By default, only the 10 most recent kernel dumps will be saved. To 403 restore the previous behaviour (no limit on the number of kernel dumps 404 stored in the dump directory) add the following line to /etc/rc.conf: 405 406 savecore_flags="" 407 40820121201: 409 With the addition of auditdistd(8), a new auditdistd user is now 410 required during installworld. "mergemaster -p" can be used to 411 add the user prior to installworld, as documented in the handbook. 412 41320121117: 414 The sin6_scope_id member variable in struct sockaddr_in6 is now 415 filled by the kernel before passing the structure to the userland via 416 sysctl or routing socket. This means the KAME-specific embedded scope 417 id in sin6_addr.s6_addr[2] is always cleared in userland application. 418 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 419 __FreeBSD_version is bumped to 1000025. 420 42120121105: 422 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 423 This means that the world and kernel will be compiled with clang 424 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 425 and /usr/bin/cpp. To disable this behavior and revert to building 426 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 427 of current may need to bootstrap WITHOUT_CLANG first if the clang 428 build fails (its compatibility window doesn't extend to the 9 stable 429 branch point). 430 43120121102: 432 The IPFIREWALL_FORWARD kernel option has been removed. Its 433 functionality now turned on by default. 434 43520121023: 436 The ZERO_COPY_SOCKET kernel option has been removed and 437 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 438 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 439 mechanism which is not safe and may result in kernel crashes. 440 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 441 driver supports disposeable external page sized mbuf storage. 442 Proper replacements for both zero-copy mechanisms are under 443 consideration and will eventually lead to complete removal 444 of the two kernel options. 445 44620121023: 447 The IPv4 network stack has been converted to network byte 448 order. The following modules need to be recompiled together 449 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 450 pf(4), ipfw(4), ng_ipfw(4), stf(4). 451 45220121022: 453 Support for non-MPSAFE filesystems was removed from VFS. The 454 VFS_VERSION was bumped, all filesystem modules shall be 455 recompiled. 456 45720121018: 458 All the non-MPSAFE filesystems have been disconnected from 459 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 460 portalfs, smbfs, xfs. 461 46220121016: 463 The interface cloning API and ABI has changed. The following 464 modules need to be recompiled together with kernel: 465 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 466 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 467 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 468 46920121015: 470 The sdhci driver was split in two parts: sdhci (generic SD Host 471 Controller logic) and sdhci_pci (actual hardware driver). 472 No kernel config modifications are required, but if you 473 load sdhc as a module you must switch to sdhci_pci instead. 474 47520121014: 476 Import the FUSE kernel and userland support into base system. 477 47820121013: 479 The GNU sort(1) program has been removed since the BSD-licensed 480 sort(1) has been the default for quite some time and no serious 481 problems have been reported. The corresponding WITH_GNU_SORT 482 knob has also gone. 483 48420121006: 485 The pfil(9) API/ABI for AF_INET family has been changed. Packet 486 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 487 with new kernel. 488 48920121001: 490 The net80211(4) ABI has been changed to allow for improved driver 491 PS-POLL and power-save support. All wireless drivers need to be 492 recompiled to work with the new kernel. 493 49420120913: 495 The random(4) support for the VIA hardware random number 496 generator (`PADLOCK') is no longer enabled unconditionally. 497 Add the padlock_rng device in the custom kernel config if 498 needed. The GENERIC kernels on i386 and amd64 do include the 499 device, so the change only affects the custom kernel 500 configurations. 501 50220120908: 503 The pf(4) packet filter ABI has been changed. pfctl(8) and 504 snmp_pf module need to be recompiled to work with new kernel. 505 50620120828: 507 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 508 to -HEAD. Pools that have empty_bpobj in active state can not be 509 imported read-write with ZFS implementations that do not support 510 this feature. For more information read the zpool-features(5) 511 manual page. 512 51320120727: 514 The sparc64 ZFS loader has been changed to no longer try to auto- 515 detect ZFS providers based on diskN aliases but now requires these 516 to be explicitly listed in the OFW boot-device environment variable. 517 51820120712: 519 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 520 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 521 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 522 52320120712: 524 The following sysctls and tunables have been renamed for consistency 525 with other variables: 526 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 527 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 528 52920120628: 530 The sort utility has been replaced with BSD sort. For now, GNU sort 531 is also available as "gnusort" or the default can be set back to 532 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 533 installed as "bsdsort". 534 53520120611: 536 A new version of ZFS (pool version 5000) has been merged to -HEAD. 537 Starting with this version the old system of ZFS pool versioning 538 is superseded by "feature flags". This concept enables forward 539 compatibility against certain future changes in functionality of ZFS 540 pools. The first read-only compatible "feature flag" for ZFS pools 541 is named "com.delphix:async_destroy". For more information 542 read the new zpool-features(5) manual page. 543 Please refer to the "ZFS notes" section of this file for information 544 on upgrading boot ZFS pools. 545 54620120417: 547 The malloc(3) implementation embedded in libc now uses sources imported 548 as contrib/jemalloc. The most disruptive API change is to 549 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 550 delete it prior to installworld, and optionally re-create it using the 551 new format after rebooting. See malloc.conf(5) for details 552 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 553 NAMESPACE section). 554 55520120328: 556 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 557 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 558 now spelled mips. This is to aid compatibility with third-party 559 software that expects this naming scheme in uname(3). Little-endian 560 settings are unchanged. If you are updating a big-endian mips64 machine 561 from before this change, you may need to set MACHINE_ARCH=mips64 in 562 your environment before the new build system will recognize your machine. 563 56420120306: 565 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 566 platforms. 567 56820120229: 569 Now unix domain sockets behave "as expected" on nullfs(5). Previously 570 nullfs(5) did not pass through all behaviours to the underlying layer, 571 as a result if we bound to a socket on the lower layer we could connect 572 only to the lower path; if we bound to the upper layer we could connect 573 only to the upper path. The new behavior is one can connect to both the 574 lower and the upper paths regardless what layer path one binds to. 575 57620120211: 577 The getifaddrs upgrade path broken with 20111215 has been restored. 578 If you have upgraded in between 20111215 and 20120209 you need to 579 recompile libc again with your kernel. You still need to recompile 580 world to be able to configure CARP but this restriction already 581 comes from 20111215. 582 58320120114: 584 The set_rcvar() function has been removed from /etc/rc.subr. All 585 base and ports rc.d scripts have been updated, so if you have a 586 port installed with a script in /usr/local/etc/rc.d you can either 587 hand-edit the rcvar= line, or reinstall the port. 588 589 An easy way to handle the mass-update of /etc/rc.d: 590 rm /etc/rc.d/* && mergemaster -i 591 59220120109: 593 panic(9) now stops other CPUs in the SMP systems, disables interrupts 594 on the current CPU and prevents other threads from running. 595 This behavior can be reverted using the kern.stop_scheduler_on_panic 596 tunable/sysctl. 597 The new behavior can be incompatible with kern.sync_on_panic. 598 59920111215: 600 The carp(4) facility has been changed significantly. Configuration 601 of the CARP protocol via ifconfig(8) has changed, as well as format 602 of CARP events submitted to devd(8) has changed. See manual pages 603 for more information. The arpbalance feature of carp(4) is currently 604 not supported anymore. 605 606 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 607 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 608 need to be recompiled. 609 61020111122: 611 The acpi_wmi(4) status device /dev/wmistat has been renamed to 612 /dev/wmistat0. 613 61420111108: 615 The option VFS_ALLOW_NONMPSAFE option has been added in order to 616 explicitely support non-MPSAFE filesystems. 617 It is on by default for all supported platform at this present 618 time. 619 62020111101: 621 The broken amd(4) driver has been replaced with esp(4) in the amd64, 622 i386 and pc98 GENERIC kernel configuration files. 623 62420110930: 625 sysinstall has been removed 626 62720110923: 628 The stable/9 branch created in subversion. This corresponds to the 629 RELENG_9 branch in CVS. 630 63120110913: 632 This commit modifies vfs_register() so that it uses a hash 633 calculation to set vfc_typenum, which is enabled by default. 634 The first time a system is booted after this change, the 635 vfc_typenum values will change for all file systems. The 636 main effect of this is a change to the NFS server file handles 637 for file systems that use vfc_typenum in their fsid, such as ZFS. 638 It will, however, prevent vfc_typenum from changing when file 639 systems are loaded in a different order for subsequent reboots. 640 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 641 until you are ready to remount all NFS clients after a reboot. 642 64320110828: 644 Bump the shared library version numbers for libraries that 645 do not use symbol versioning, have changed the ABI compared 646 to stable/8 and which shared library version was not bumped. 647 Done as part of 9.0-RELEASE cycle. 648 64920110815: 650 During the merge of Capsicum features, the fget(9) KPI was modified. 651 This may require the rebuilding of out-of-tree device drivers -- 652 issues have been reported specifically with the nVidia device driver. 653 __FreeBSD_version is bumped to 900041. 654 655 Also, there is a period between 20110811 and 20110814 where the 656 special devices /dev/{stdin,stdout,stderr} did not work correctly. 657 Building world from a kernel during that window may not work. 658 65920110628: 660 The packet filter (pf) code has been updated to OpenBSD 4.5. 661 You need to update userland tools to be in sync with kernel. 662 This update breaks backward compatibility with earlier pfsync(4) 663 versions. Care must be taken when updating redundant firewall setups. 664 66520110608: 666 The following sysctls and tunables are retired on x86 platforms: 667 machdep.hlt_cpus 668 machdep.hlt_logical_cpus 669 The following sysctl is retired: 670 machdep.hyperthreading_allowed 671 The sysctls were supposed to provide a way to dynamically offline and 672 online selected CPUs on x86 platforms, but the implementation has not 673 been reliable especially with SCHED_ULE scheduler. 674 machdep.hyperthreading_allowed tunable is still available to ignore 675 hyperthreading CPUs at OS level. 676 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 677 where X is an APIC ID of a CPU. Be advised, though, that disabling 678 CPUs in non-uniform fashion will result in non-uniform topology and 679 may lead to sub-optimal system performance with SCHED_ULE, which is 680 a default scheduler. 681 68220110607: 683 cpumask_t type is retired and cpuset_t is used in order to describe 684 a mask of CPUs. 685 68620110531: 687 Changes to ifconfig(8) for dynamic address family detection mandate 688 that you are running a kernel of 20110525 or later. Make sure to 689 follow the update procedure to boot a new kernel before installing 690 world. 691 69220110513: 693 Support for sun4v architecture is officially dropped 694 69520110503: 696 Several KPI breaking changes have been committed to the mii(4) layer, 697 the PHY drivers and consequently some Ethernet drivers using mii(4). 698 This means that miibus.ko and the modules of the affected Ethernet 699 drivers need to be recompiled. 700 701 Note to kernel developers: Given that the OUI bit reversion problem 702 was fixed as part of these changes all mii(4) commits related to OUIs, 703 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 704 handling, no longer can be merged verbatim to stable/8 and previous 705 branches. 706 70720110430: 708 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 709 into their kernel configurations along with 'device pci'. 710 71120110427: 712 The default NFS client is now the new NFS client, so fstype "newnfs" 713 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 714 Although mounts via fstype "nfs" will usually work without userland 715 changes, it is recommended that the mount(8) and mount_nfs(8) 716 commands be rebuilt from sources and that a link to mount_nfs called 717 mount_oldnfs be created. The new client is compiled into the 718 kernel with "options NFSCL" and this is needed for diskless root 719 file systems. The GENERIC kernel configs have been changed to use 720 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 721 To use the regular/old client, you can "mount -t oldnfs ...". For 722 a diskless root file system, you must also include a line like: 723 724 vfs.root.mountfrom="oldnfs:" 725 726 in the boot/loader.conf on the root fs on the NFS server to make 727 a diskless root fs use the old client. 728 72920110424: 730 The GENERIC kernels for all architectures now default to the new 731 CAM-based ATA stack. It means that all legacy ATA drivers were 732 removed and replaced by respective CAM drivers. If you are using 733 ATA device names in /etc/fstab or other places, make sure to update 734 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 735 where 'Y's are the sequential numbers starting from zero for each type 736 in order of detection, unless configured otherwise with tunables, 737 see cam(4)). There will be symbolic links created in /dev/ to map 738 old adX devices to the respective adaY. They should provide basic 739 compatibility for file systems mounting in most cases, but they do 740 not support old user-level APIs and do not have respective providers 741 in GEOM. Consider using updated management tools with new device names. 742 743 It is possible to load devices ahci, ata, siis and mvs as modules, 744 but option ATA_CAM should remain in kernel configuration to make ata 745 module work as CAM driver supporting legacy ATA controllers. Device ata 746 still can be used in modular fashion (atacore + ...). Modules atadisk 747 and atapi* are not used and won't affect operation in ATA_CAM mode. 748 Note that to use CAM-based ATA kernel should include CAM devices 749 scbus, pass, da (or explicitly ada), cd and optionally others. All of 750 them are parts of the cam module. 751 752 ataraid(4) functionality is now supported by the RAID GEOM class. 753 To use it you can load geom_raid kernel module and use graid(8) tool 754 for management. Instead of /dev/arX device names, use /dev/raid/rX. 755 756 No kernel config options or code have been removed, so if a problem 757 arises, please report it and optionally revert to the old ATA stack. 758 In order to do it you can remove from the kernel config: 759 options ATA_CAM 760 device ahci 761 device mvs 762 device siis 763 , and instead add back: 764 device atadisk # ATA disk drives 765 device ataraid # ATA RAID drives 766 device atapicd # ATAPI CDROM drives 767 device atapifd # ATAPI floppy drives 768 device atapist # ATAPI tape drives 769 77020110423: 771 The default NFS server has been changed to the new server, which 772 was referred to as the experimental server. If you need to switch 773 back to the old NFS server, you must now put the "-o" option on 774 both the mountd and nfsd commands. This can be done using the 775 mountd_flags and nfs_server_flags rc.conf variables until an 776 update to the rc scripts is committed, which is coming soon. 777 77820110418: 779 The GNU Objective-C runtime library (libobjc), and other Objective-C 780 related components have been removed from the base system. If you 781 require an Objective-C library, please use one of the available ports. 782 78320110331: 784 ath(4) has been split into bus- and device- modules. if_ath contains 785 the HAL, the TX rate control and the network device code. if_ath_pci 786 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 787 contains the AHB glue. Users need to load both if_ath_pci and if_ath 788 in order to use ath on everything else. 789 790 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 791 need to load if_ath and if_ath_pci for ath(4) operation. 792 79320110314: 794 As part of the replacement of sysinstall, the process of building 795 release media has changed significantly. For details, please re-read 796 release(7), which has been updated to reflect the new build process. 797 79820110218: 799 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 800 is the last available version under GPLv2. It brings a number of new 801 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 802 4.1 and SSE 4.2), better support for powerpc64, a number of new 803 directives, and lots of other small improvements. See the ChangeLog 804 file in contrib/binutils for the full details. 805 80620110218: 807 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 808 compliant, and will now use half of hash for authentication. 809 This will break interoperability with all stacks (including all 810 actual FreeBSD versions) who implement 811 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 812 authentication). 813 The only workaround with such peers is to use another HMAC 814 algorithm for IPsec ("phase 2") authentication. 815 81620110207: 817 Remove the uio_yield prototype and symbol. This function has 818 been misnamed since it was introduced and should not be 819 globally exposed with this name. The equivalent functionality 820 is now available using kern_yield(curthread->td_user_pri). 821 The function remains undocumented. 822 82320110112: 824 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 825 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 826 for scalar sysctls is defined but disabled. Code that needs 827 UQUAD to pass the type checking that must compile on older 828 systems where the define is not present can check against 829 __FreeBSD_version >= 900030. 830 831 The system dialog(1) has been replaced with a new version previously 832 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 833 with the previous version, but the libdialog associated with it has 834 a largely incompatible API. As such, the original version of libdialog 835 will be kept temporarily as libodialog, until its base system consumers 836 are replaced or updated. Bump __FreeBSD_version to 900030. 837 83820110103: 839 If you are trying to run make universe on a -stable system, and you get 840 the following warning: 841 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 842 unknown. config(8) likely too old." 843 or something similar to it, then you must upgrade your -stable system 844 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 845 stable/8) or build the config from the latest stable/8 branch and 846 install it on your system. 847 848 Prior to this date, building a current universe on 8-stable system from 849 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 850 error in the first kernel build phase. A new config on those old 851 systems will fix that problem for older versions of -current. 852 85320101228: 854 The TCP stack has been modified to allow Khelp modules to interact with 855 it via helper hook points and store per-connection data in the TCP 856 control block. Bump __FreeBSD_version to 900029. User space tools that 857 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 858 be recompiled. 859 86020101114: 861 Generic IEEE 802.3 annex 31B full duplex flow control support has been 862 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 863 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 864 to take advantage of it instead of using custom implementations. This 865 means that these drivers now no longer unconditionally advertise 866 support for flow control but only do so if flow control is a selected 867 media option. This was implemented in the generic support that way in 868 order to allow flow control to be switched on and off via ifconfig(8) 869 with the PHY specific default to typically off in order to protect 870 from unwanted effects. Consequently, if you used flow control with 871 one of the above mentioned drivers you now need to explicitly enable 872 it, for example via: 873 ifconfig bge0 media auto mediaopt flowcontrol 874 875 Along with the above mentioned changes generic support for setting 876 1000baseT master mode also has been added and brgphy(4), ciphy(4), 877 e1000phy(4) as well as ip1000phy(4) have been converted to take 878 advantage of it. This means that these drivers now no longer take the 879 link0 parameter for selecting master mode but the master media option 880 has to be used instead, for example like in the following: 881 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 882 883 Selection of master mode now is also available with all other PHY 884 drivers supporting 1000baseT. 885 88620101111: 887 The TCP stack has received a significant update to add support for 888 modularised congestion control and generally improve the clarity of 889 congestion control decisions. Bump __FreeBSD_version to 900025. User 890 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 891 sockstat) need to be recompiled. 892 89320101002: 894 The man(1) utility has been replaced by a new version that no longer 895 uses /etc/manpath.config. Please consult man.conf(5) for how to 896 migrate local entries to the new format. 897 89820100928: 899 The copyright strings printed by login(1) and sshd(8) at the time of a 900 new connection have been removed to follow other operating systems and 901 upstream sshd. 902 90320100915: 904 A workaround for a fixed ld bug has been removed in kernel code, 905 so make sure that your system ld is built from sources after 906 revision 210245 from 2010-07-19 (r211583 if building head kernel 907 on stable/8, r211584 for stable/7; both from 2010-08-21). 908 A symptom of incorrect ld version is different addresses for 909 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 910 91120100913: 912 The $ipv6_prefer variable in rc.conf(5) has been split into 913 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 914 915 The $ip6addrctl_policy is a variable to choose a pre-defined 916 address selection policy set by ip6addrctl(8). A value 917 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 918 default is "AUTO". 919 920 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 921 flag (see an entry of 20090926) is set on an interface with no 922 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 923 security reason. If you want IPv6 link-local address on all 924 interfaces by default, set this to "YES". 925 926 The old ipv6_prefer="YES" is equivalent to 927 ipv6_activate_all_interfaces="YES" and 928 ip6addrctl_policy="ipv6_prefer". 929 93020100913: 931 DTrace has grown support for userland tracing. Due to this, DTrace is 932 now i386 and amd64 only. 933 dtruss(1) is now installed by default on those systems and a new 934 kernel module is needed for userland tracing: fasttrap. 935 No changes to your kernel config file are necessary to enable 936 userland tracing, but you might consider adding 'STRIP=' and 937 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 938 to have informative userland stack traces in DTrace (ustack). 939 94020100725: 941 The acpi_aiboost(4) driver has been removed in favor of the new 942 aibs(4) driver. You should update your kernel configuration file. 943 94420100722: 945 BSD grep has been imported to the base system and it is built by 946 default. It is completely BSD licensed, highly GNU-compatible, uses 947 less memory than its GNU counterpart and has a small codebase. 948 However, it is slower than its GNU counterpart, which is mostly 949 noticeable for larger searches, for smaller ones it is measurable 950 but not significant. The reason is complex, the most important factor 951 is that we lack a modern and efficient regex library and GNU 952 overcomes this by optimizing the searches internally. Future work 953 on improving the regex performance is planned, for the meantime, 954 users that need better performance, can build GNU grep instead by 955 setting the WITH_GNU_GREP knob. 956 95720100713: 958 Due to the import of powerpc64 support, all existing powerpc kernel 959 configuration files must be updated with a machine directive like this: 960 machine powerpc powerpc 961 962 In addition, an updated config(8) is required to build powerpc kernels 963 after this change. 964 96520100713: 966 A new version of ZFS (version 15) has been merged to -HEAD. 967 This version uses a python library for the following subcommands: 968 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 969 For full functionality of these commands the following port must 970 be installed: sysutils/py-zfs 971 97220100429: 973 'vm_page's are now hashed by physical address to an array of mutexes. 974 Currently this is only used to serialize access to hold_count. Over 975 time the page queue mutex will be peeled away. This changes the size 976 of pmap on every architecture. And requires all callers of vm_page_hold 977 and vm_page_unhold to be updated. 978 97920100402: 980 WITH_CTF can now be specified in src.conf (not recommended, there 981 are some problems with static executables), make.conf (would also 982 affect ports which do not use GNU make and do not override the 983 compile targets) or in the kernel config (via "makeoptions 984 WITH_CTF=yes"). 985 When WITH_CTF was specified there before this was silently ignored, 986 so make sure that WITH_CTF is not used in places which could lead 987 to unwanted behavior. 988 98920100311: 990 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 991 to allow 32-bit compatibility on non-x86 platforms. All kernel 992 configurations on amd64 and ia64 platforms using these options must 993 be modified accordingly. 994 99520100113: 996 The utmp user accounting database has been replaced with utmpx, 997 the user accounting interface standardized by POSIX. 998 Unfortunately the semantics of utmp and utmpx don't match, 999 making it practically impossible to support both interfaces. 1000 The user accounting database is used by tools like finger(1), 1001 last(1), talk(1), w(1) and ac(8). 1002 1003 All applications in the base system use utmpx. This means only 1004 local binaries (e.g. from the ports tree) may still use these 1005 utmp database files. These applications must be rebuilt to make 1006 use of utmpx. 1007 1008 After the system has been upgraded, it is safe to remove the old 1009 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 1010 assuming their contents is of no importance anymore. Old wtmp 1011 databases can only be used by last(1) and ac(8) after they have 1012 been converted to the new format using wtmpcvt(1). 1013 101420100108: 1015 Introduce the kernel thread "deadlock resolver" (which can be enabled 1016 via the DEADLKRES option, see NOTES for more details) and the 1017 sleepq_type() function for sleepqueues. 1018 101920091202: 1020 The rc.firewall and rc.firewall6 were unified, and 1021 rc.firewall6 and rc.d/ip6fw were removed. 1022 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 1023 variables are obsoleted. Instead, the following new rc 1024 variables are added to rc.d/ipfw: 1025 1026 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 1027 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 1028 firewall_simple_onet_ipv6, firewall_trusted_ipv6 1029 1030 The meanings correspond to the relevant IPv4 variables. 1031 103220091125: 1033 8.0-RELEASE. 1034 103520091113: 1036 The default terminal emulation for syscons(4) has been changed 1037 from cons25 to xterm on all platforms except pc98. This means 1038 that the /etc/ttys file needs to be updated to ensure correct 1039 operation of applications on the console. 1040 1041 The terminal emulation style can be toggled per window by using 1042 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 1043 options can be used to change the compile-time default back to 1044 cons25. 1045 1046 To prevent graphical artifacts, make sure the TERM environment 1047 variable is set to match the terminal emulation that is being 1048 performed by syscons(4). 1049 105020091109: 1051 The layout of the structure ieee80211req_scan_result has changed. 1052 Applications that require wireless scan results (e.g. ifconfig(8)) 1053 from net80211 need to be recompiled. 1054 1055 Applications such as wpa_supplicant(8) may require a full world 1056 build without using NO_CLEAN in order to get synchronized with the 1057 new structure. 1058 105920091025: 1060 The iwn(4) driver has been updated to support the 5000 and 5150 series. 1061 There's one kernel module for each firmware. Adding "device iwnfw" 1062 to the kernel configuration file means including all three firmware 1063 images inside the kernel. If you want to include just the one for 1064 your wireless card, use the devices iwn4965fw, iwn5000fw or 1065 iwn5150fw. 1066 106720090926: 1068 The rc.d/network_ipv6, IPv6 configuration script has been integrated 1069 into rc.d/netif. The changes are the following: 1070 1071 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 1072 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 1073 Note that both variables need the "inet6" keyword at the head. 1074 1075 Do not set $ipv6_network_interfaces manually if you do not 1076 understand what you are doing. It is not needed in most cases. 1077 1078 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 1079 they are obsolete. 1080 1081 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 1082 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 1083 1084 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 1085 all configured interfaces have "inet6 accept_rtadv" in the 1086 $ifconfig_IF_ipv6. These are for backward compatibility. 1087 1088 3. A new variable $ipv6_prefer has been added. If NO, IPv6 1089 functionality of interfaces with no corresponding 1090 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 1091 and the default address selection policy of ip6addrctl(8) 1092 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 1093 Note that if you want to configure IPv6 functionality on the 1094 disabled interfaces after boot, first you need to clear the flag by 1095 using ifconfig(8) like: 1096 1097 ifconfig em0 inet6 -ifdisabled 1098 1099 If YES, the default address selection policy is set as 1100 IPv6-preferred. 1101 1102 The default value of $ipv6_prefer is NO. 1103 1104 4. If your system need to receive Router Advertisement messages, 1105 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 1106 scripts automatically invoke rtsol(8) when the interface becomes 1107 UP. The Router Advertisement messages are used for SLAAC 1108 (State-Less Address AutoConfiguration). 1109 111020090922: 1111 802.11s D3.03 support was committed. This is incompatible with the 1112 previous code, which was based on D3.0. 1113 111420090912: 1115 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 1116 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 1117 control whether accepting Router Advertisement messages or not. 1118 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 1119 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 1120 The ifconfig(8) utility now supports these flags. 1121 112220090910: 1123 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 1124 mount(8) and -a option for df(1) to see them. 1125 112620090825: 1127 The old tunable hw.bus.devctl_disable has been superseded by 1128 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 1129 replaced by hw.bus.devctl_queue=0. The default for this new tunable 1130 is 1000. 1131 113220090813: 1133 Remove the option STOP_NMI. The default action is now to use NMI only 1134 for KDB via the newly introduced function stop_cpus_hard() and 1135 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 1136 113720090803: 1138 The stable/8 branch created in subversion. This corresponds to the 1139 RELENG_8 branch in CVS. 1140 114120090719: 1142 Bump the shared library version numbers for all libraries that do not 1143 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 1144 __FreeBSD_version to 800105. 1145 114620090714: 1147 Due to changes in the implementation of virtual network stack support, 1148 all network-related kernel modules must be recompiled. As this change 1149 breaks the ABI, bump __FreeBSD_version to 800104. 1150 115120090713: 1152 The TOE interface to the TCP syncache has been modified to remove 1153 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 1154 The cxgb driver is the only TOE consumer affected by this change, and 1155 needs to be recompiled along with the kernel. As this change breaks 1156 the ABI, bump __FreeBSD_version to 800103. 1157 115820090712: 1159 Padding has been added to struct tcpcb, sackhint and tcpstat in 1160 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 1161 maintaining the ABI. However, this change breaks the ABI, so bump 1162 __FreeBSD_version to 800102. User space tools that rely on the size of 1163 any of these structs (e.g. sockstat) need to be recompiled. 1164 116520090630: 1166 The NFS_LEGACYRPC option has been removed along with the old kernel 1167 RPC implementation that this option selected. Kernel configurations 1168 may need to be adjusted. 1169 117020090629: 1171 The network interface device nodes at /dev/net/<interface> have been 1172 removed. All ioctl operations can be performed the normal way using 1173 routing sockets. The kqueue functionality can generally be replaced 1174 with routing sockets. 1175 117620090628: 1177 The documentation from the FreeBSD Documentation Project (Handbook, 1178 FAQ, etc.) is now installed via packages by sysinstall(8) and under 1179 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 1180 118120090624: 1182 The ABI of various structures related to the SYSV IPC API have been 1183 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 1184 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 1185 800100. 1186 118720090622: 1188 Layout of struct vnet has changed as routing related variables were 1189 moved to their own Vimage module. Modules need to be recompiled. Bump 1190 __FreeBSD_version to 800099. 1191 119220090619: 1193 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 1194 respectively. As long as no more than 16 groups per process are used, 1195 no changes should be visible. When more than 16 groups are used, old 1196 binaries may fail if they call getgroups() or getgrouplist() with 1197 statically sized storage. Recompiling will work around this, but 1198 applications should be modified to use dynamically allocated storage 1199 for group arrays as POSIX.1-2008 does not cap an implementation's 1200 number of supported groups at NGROUPS_MAX+1 as previous versions did. 1201 1202 NFS and portalfs mounts may also be affected as the list of groups is 1203 truncated to 16. Users of NFS who use more than 16 groups, should 1204 take care that negative group permissions are not used on the exported 1205 file systems as they will not be reliable unless a GSSAPI based 1206 authentication method is used. 1207 120820090616: 1209 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 1210 option compiles in the support for adaptive spinning for lockmgrs 1211 which want to enable it. The lockinit() function now accepts the flag 1212 LK_ADAPTIVE in order to make the lock object subject to adaptive 1213 spinning when both held in write and read mode. 1214 121520090613: 1216 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 1217 changed. User applications that use this ioctl need to be rebuilt. 1218 121920090611: 1220 The layout of struct thread has changed. Kernel and modules need to 1221 be rebuilt. 1222 122320090608: 1224 The layout of structs ifnet, domain, protosw and vnet_net has changed. 1225 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 1226 122720090602: 1228 window(1) has been removed from the base system. It can now be 1229 installed from ports. The port is called misc/window. 1230 123120090601: 1232 The way we are storing and accessing `routing table' entries has 1233 changed. Programs reading the FIB, like netstat, need to be 1234 re-compiled. 1235 123620090601: 1237 A new netisr implementation has been added for FreeBSD 8. Network 1238 file system modules, such as igmp, ipdivert, and others, should be 1239 rebuilt. 1240 Bump __FreeBSD_version to 800096. 1241 124220090530: 1243 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 1244 more valid. 1245 124620090530: 1247 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 1248 Bump __FreeBSD_version to 800094. 1249 125020090529: 1251 Add mnt_xflag field to 'struct mount'. File system modules need to be 1252 rebuilt. 1253 Bump __FreeBSD_version to 800093. 1254 125520090528: 1256 The compiling option ADAPTIVE_SX has been retired while it has been 1257 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1258 The KPI for sx_init_flags() changes as accepting flags: 1259 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1260 been introduced in order to handle the reversed logic. 1261 Bump __FreeBSD_version to 800092. 1262 126320090527: 1264 Add support for hierarchical jails. Remove global securelevel. 1265 Bump __FreeBSD_version to 800091. 1266 126720090523: 1268 The layout of struct vnet_net has changed, therefore modules 1269 need to be rebuilt. 1270 Bump __FreeBSD_version to 800090. 1271 127220090523: 1273 The newly imported zic(8) produces a new format in the output. Please 1274 run tzsetup(8) to install the newly created data to /etc/localtime. 1275 127620090520: 1277 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1278 hw.usb.* and is now consistent again with previous releases. 1279 128020090520: 1281 802.11 monitor mode support was revised and driver api's were changed. 1282 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1283 of DLT_IEEE802_11. No user-visible data structures were changed but 1284 applications that use DLT_IEEE802_11 may require changes. 1285 Bump __FreeBSD_version to 800088. 1286 128720090430: 1288 The layout of the following structs has changed: sysctl_oid, 1289 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1290 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1291 panics may be experienced. World rebuild is required for 1292 correctly checking networking state from userland. 1293 Bump __FreeBSD_version to 800085. 1294 129520090429: 1296 MLDv2 and Source-Specific Multicast (SSM) have been merged 1297 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1298 The implementation of SSM within FreeBSD's IPv6 stack closely 1299 follows the IPv4 implementation. 1300 1301 For kernel developers: 1302 1303 * The most important changes are that the ip6_output() and 1304 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1305 and this lock has been downgraded to a non-recursive mutex. 1306 1307 * As with the changes to the IPv4 stack to support SSM, filtering 1308 of inbound multicast traffic must now be performed by transport 1309 protocols within the IPv6 stack. This does not apply to TCP and 1310 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1311 1312 * The KPIs used by IPv6 multicast are similar to those used by 1313 the IPv4 stack, with the following differences: 1314 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1315 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1316 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1317 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1318 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1319 for MLDv1 have an additional 'timer' argument which is used to 1320 jitter the initial membership report for the solicited-node 1321 multicast membership on-link. 1322 * This is not strictly needed for MLDv2, which already jitters 1323 its report transmissions. However, the 'timer' argument is 1324 preserved in case MLDv1 is active on the interface. 1325 1326 * The KAME linked-list based IPv6 membership implementation has 1327 been refactored to use a vector similar to that used by the IPv4 1328 stack. 1329 Code which maintains a list of its own multicast memberships 1330 internally, e.g. carp, has been updated to reflect the new 1331 semantics. 1332 1333 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1334 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1335 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1336 implementation constraint which needs to be addressed in HEAD. 1337 1338 For application developers: 1339 1340 * The changes are broadly similar to those made for the IPv4 1341 stack. 1342 1343 * The use of IPv4 and IPv6 multicast socket options on the same 1344 socket, using mapped addresses, HAS NOT been tested or supported. 1345 1346 * There are a number of issues with the implementation of various 1347 IPv6 multicast APIs which need to be resolved in the API surface 1348 before the implementation is fully compatible with KAME userland 1349 use, and these are mostly to do with interface index treatment. 1350 1351 * The literature available discusses the use of either the delta / ASM 1352 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1353 using setsourcefilter(3)/getsourcefilter(3). For more information 1354 please refer to RFC 3768, 'Socket Interface Extensions for 1355 Multicast Source Filters'. 1356 1357 * Applications which use the published RFC 3678 APIs should be fine. 1358 1359 For systems administrators: 1360 1361 * The mtest(8) utility has been refactored to support IPv6, in 1362 addition to IPv4. Interface addresses are no longer accepted 1363 as arguments, their names must be used instead. The utility 1364 will map the interface name to its first IPv4 address as 1365 returned by getifaddrs(3). 1366 1367 * The ifmcstat(8) utility has also been updated to print the MLDv2 1368 endpoint state and source filter lists via sysctl(3). 1369 1370 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1371 loopback of IPv6 multicast datagrams by default; it defaults to 1 1372 to preserve the existing behaviour. Disabling multicast loopback is 1373 recommended for optimal system performance. 1374 1375 * The IPv6 MROUTING code has been changed to examine this sysctl 1376 instead of attempting to perform a group lookup before looping 1377 back forwarded datagrams. 1378 1379 Bump __FreeBSD_version to 800084. 1380 138120090422: 1382 Implement low-level Bluetooth HCI API. 1383 Bump __FreeBSD_version to 800083. 1384 138520090419: 1386 The layout of struct malloc_type, used by modules to register new 1387 memory allocation types, has changed. Most modules will need to 1388 be rebuilt or panics may be experienced. 1389 Bump __FreeBSD_version to 800081. 1390 139120090415: 1392 Anticipate overflowing inp_flags - add inp_flags2. 1393 This changes most offsets in inpcb, so checking v4 connection 1394 state will require a world rebuild. 1395 Bump __FreeBSD_version to 800080. 1396 139720090415: 1398 Add an llentry to struct route and struct route_in6. Modules 1399 embedding a struct route will need to be recompiled. 1400 Bump __FreeBSD_version to 800079. 1401 140220090414: 1403 The size of rt_metrics_lite and by extension rtentry has changed. 1404 Networking administration apps will need to be recompiled. 1405 The route command now supports show as an alias for get, weighting 1406 of routes, sticky and nostick flags to alter the behavior of stateful 1407 load balancing. 1408 Bump __FreeBSD_version to 800078. 1409 141020090408: 1411 Do not use Giant for kbdmux(4) locking. This is wrong and 1412 apparently causing more problems than it solves. This will 1413 re-open the issue where interrupt handlers may race with 1414 kbdmux(4) in polling mode. Typical symptoms include (but 1415 not limited to) duplicated and/or missing characters when 1416 low level console functions (such as gets) are used while 1417 interrupts are enabled (for example geli password prompt, 1418 mountroot prompt etc.). Disabling kbdmux(4) may help. 1419 142020090407: 1421 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1422 kernel modules referencing any of the above need to be recompiled. 1423 Bump __FreeBSD_version to 800075. 1424 142520090320: 1426 GEOM_PART has become the default partition slicer for storage devices, 1427 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1428 introduces some changes: 1429 1430 MSDOS/EBR: the devices created from MSDOS extended partition entries 1431 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1432 to devices with offset-based names. fstabs may need to be modified. 1433 1434 BSD: the "geometry does not match label" warning is harmless in most 1435 cases but it points to problems in file system misalignment with 1436 disk geometry. The "c" partition is now implicit, covers the whole 1437 top-level drive and cannot be (mis)used by users. 1438 1439 General: Kernel dumps are now not allowed to be written to devices 1440 whose partition types indicate they are meant to be used for file 1441 systems (or, in case of MSDOS partitions, as something else than 1442 the "386BSD" type). 1443 1444 Most of these changes date approximately from 200812. 1445 144620090319: 1447 The uscanner(4) driver has been removed from the kernel. This follows 1448 Linux removing theirs in 2.6 and making libusb the default interface 1449 (supported by sane). 1450 145120090319: 1452 The multicast forwarding code has been cleaned up. netstat(1) 1453 only relies on KVM now for printing bandwidth upcall meters. 1454 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1455 ip6_mroute_mod respectively. The config(5) options for statically 1456 compiling this code remain the same, i.e. 'options MROUTING'. 1457 145820090315: 1459 Support for the IFF_NEEDSGIANT network interface flag has been 1460 removed, which means that non-MPSAFE network device drivers are no 1461 longer supported. In particular, if_ar, if_sr, and network device 1462 drivers from the old (legacy) USB stack can no longer be built or 1463 used. 1464 146520090313: 1466 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1467 a bunch of new language catalog files have also been added. 1468 This means that some common libc messages are now localized and 1469 they depend on the LC_MESSAGES environmental variable. 1470 147120090313: 1472 The k8temp(4) driver has been renamed to amdtemp(4) since 1473 support for Family 10 and Family 11 CPU families was added. 1474 147520090309: 1476 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1477 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1478 1479 For kernel developers, the most important changes are that the 1480 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1481 and this lock has been downgraded to a non-recursive mutex. 1482 1483 Transport protocols (UDP, Raw IP) are now responsible for filtering 1484 inbound multicast traffic according to group membership and source 1485 filters. The imo_multicast_filter() KPI exists for this purpose. 1486 Transports which do not use multicast (SCTP, TCP) already reject 1487 multicast by default. Forwarding and receive performance may improve 1488 as a mutex acquisition is no longer needed in the ip_input() 1489 low-level input path. in_addmulti() and in_delmulti() are shimmed 1490 to new KPIs which exist to support SSM in-kernel. 1491 1492 For application developers, it is recommended that loopback of 1493 multicast datagrams be disabled for best performance, as this 1494 will still cause the lock to be taken for each looped-back 1495 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1496 be tuned to 0 to disable loopback by default; it defaults to 1 1497 to preserve the existing behaviour. 1498 1499 For systems administrators, to obtain best performance with 1500 multicast reception and multiple groups, it is always recommended 1501 that a card with a suitably precise hash filter is used. Hash 1502 collisions will still result in the lock being taken within the 1503 transport protocol input path to check group membership. 1504 1505 If deploying FreeBSD in an environment with IGMP snooping switches, 1506 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1507 enabled; this forces 224.0.0.0/24 group membership to be announced 1508 via IGMP. 1509 1510 The size of 'struct igmpstat' has changed; netstat needs to be 1511 recompiled to reflect this. 1512 Bump __FreeBSD_version to 800070. 1513 151420090309: 1515 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1516 updated to use it. This requires a buildworld/installworld in order to 1517 update the library and dependencies (usbconfig, etc). Its advisable to 1518 rebuild all ports which uses libusb. More specific directions are given 1519 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1520 libusb are no longer required and can be removed. 1521 152220090302: 1523 A workaround is committed to allow the creation of System V shared 1524 memory segment of size > 2 GB on the 64-bit architectures. 1525 Due to a limitation of the existing ABI, the shm_segsz member 1526 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1527 wrong for large segments. Note that limits must be explicitly 1528 raised to allow such segments to be created. 1529 153020090301: 1531 The layout of struct ifnet has changed, requiring a rebuild of all 1532 network device driver modules. 1533 153420090227: 1535 The /dev handling for the new USB stack has changed, a 1536 buildworld/installworld is required for libusb20. 1537 153820090223: 1539 The new USB2 stack has now been permanently moved in and all kernel and 1540 module names reverted to their previous values (eg, usb, ehci, ohci, 1541 ums, ...). The old usb stack can be compiled in by prefixing the name 1542 with the letter 'o', the old usb modules have been removed. 1543 Updating entry 20090216 for xorg and 20090215 for libmap may still 1544 apply. 1545 154620090217: 1547 The rc.conf(5) option if_up_delay has been renamed to 1548 defaultroute_delay to better reflect its purpose. If you have 1549 customized this setting in /etc/rc.conf you need to update it to 1550 use the new name. 1551 155220090216: 1553 xorg 7.4 wants to configure its input devices via hald which does not 1554 yet work with USB2. If the keyboard/mouse does not work in xorg then 1555 add 1556 Option "AllowEmptyInput" "off" 1557 to your ServerLayout section. This will cause X to use the configured 1558 kbd and mouse sections from your xorg.conf. 1559 156020090215: 1561 The GENERIC kernels for all architectures now default to the new USB2 1562 stack. No kernel config options or code have been removed so if a 1563 problem arises please report it and optionally revert to the old USB 1564 stack. If you are loading USB kernel modules or have a custom kernel 1565 that includes GENERIC then ensure that usb names are also changed over, 1566 eg uftdi -> usb2_serial_ftdi. 1567 1568 Older programs linked against the ports libusb 0.1 need to be 1569 redirected to the new stack's libusb20. /etc/libmap.conf can 1570 be used for this: 1571 # Map old usb library to new one for usb2 stack 1572 libusb-0.1.so.8 libusb20.so.1 1573 157420090209: 1575 All USB ethernet devices now attach as interfaces under the name ueN 1576 (eg. ue0). This is to provide a predictable name as vendors often 1577 change usb chipsets in a product without notice. 1578 157920090203: 1580 The ichsmb(4) driver has been changed to require SMBus slave 1581 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1582 All of the other SMBus controller drivers require left-justified 1583 slave addresses, so this change makes all the drivers provide the 1584 same interface. 1585 158620090201: 1587 INET6 statistics (struct ip6stat) was updated. 1588 netstat(1) needs to be recompiled. 1589 159020090119: 1591 NTFS has been removed from GENERIC kernel on amd64 to match 1592 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1593 will load ntfs.ko module automatically when NTFS support is 1594 actually needed, unless ntfs.ko is not installed or security 1595 level prohibits loading kernel modules. If either is the case, 1596 "options NTFS" has to be added into kernel config. 1597 159820090115: 1599 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1600 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1601 800061. User space tools that rely on the size of struct tcpcb in 1602 tcp_var.h (e.g. sockstat) need to be recompiled. 1603 160420081225: 1605 ng_tty(4) module updated to match the new TTY subsystem. 1606 Due to API change, user-level applications must be updated. 1607 New API support added to mpd5 CVS and expected to be present 1608 in next mpd5.3 release. 1609 161020081219: 1611 With __FreeBSD_version 800060 the makefs tool is part of 1612 the base system (it was a port). 1613 161420081216: 1615 The afdata and ifnet locks have been changed from mutexes to 1616 rwlocks, network modules will need to be re-compiled. 1617 161820081214: 1619 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1620 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1621 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1622 architecture and 40 bytes on 64-bit architecture. The userland 1623 applications "arp" and "ndp" have been updated accordingly. 1624 The output from "netstat -r" shows only routing entries and 1625 none of the L2 information. 1626 162720081130: 1628 __FreeBSD_version 800057 marks the switchover from the 1629 binary ath hal to source code. Users must add the line: 1630 1631 options AH_SUPPORT_AR5416 1632 1633 to their kernel config files when specifying: 1634 1635 device ath_hal 1636 1637 The ath_hal module no longer exists; the code is now compiled 1638 together with the driver in the ath module. It is now 1639 possible to tailor chip support (i.e. reduce the set of chips 1640 and thereby the code size); consult ath_hal(4) for details. 1641 164220081121: 1643 __FreeBSD_version 800054 adds memory barriers to 1644 <machine/atomic.h>, new interfaces to ifnet to facilitate 1645 multiple hardware transmit queues for cards that support 1646 them, and a lock-less ring-buffer implementation to 1647 enable drivers to more efficiently manage queueing of 1648 packets. 1649 165020081117: 1651 A new version of ZFS (version 13) has been merged to -HEAD. 1652 This version has zpool attribute "listsnapshots" off by 1653 default, which means "zfs list" does not show snapshots, 1654 and is the same as Solaris behavior. 1655 165620081028: 1657 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1658 165920081009: 1660 The uhci, ohci, ehci and slhci USB Host controller drivers have 1661 been put into separate modules. If you load the usb module 1662 separately through loader.conf you will need to load the 1663 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1664 controller add the following to loader.conf: 1665 1666 uhci_load="YES" 1667 ehci_load="YES" 1668 166920081009: 1670 The ABI used by the PMC toolset has changed. Please keep 1671 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1672 sync. 1673 167420081009: 1675 atapci kernel module now includes only generic PCI ATA 1676 driver. AHCI driver moved to ataahci kernel module. 1677 All vendor-specific code moved into separate kernel modules: 1678 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1679 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1680 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1681 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1682 168320080820: 1684 The TTY subsystem of the kernel has been replaced by a new 1685 implementation, which provides better scalability and an 1686 improved driver model. Most common drivers have been migrated to 1687 the new TTY subsystem, while others have not. The following 1688 drivers have not yet been ported to the new TTY layer: 1689 1690 PCI/ISA: 1691 cy, digi, rc, rp, sio 1692 1693 USB: 1694 ubser, ucycom 1695 1696 Line disciplines: 1697 ng_h4, ng_tty, ppp, sl, snp 1698 1699 Adding these drivers to your kernel configuration file shall 1700 cause compilation to fail. 1701 170220080818: 1703 ntpd has been upgraded to 4.2.4p5. 1704 170520080801: 1706 OpenSSH has been upgraded to 5.1p1. 1707 1708 For many years, FreeBSD's version of OpenSSH preferred DSA 1709 over RSA for host and user authentication keys. With this 1710 upgrade, we've switched to the vendor's default of RSA over 1711 DSA. This may cause upgraded clients to warn about unknown 1712 host keys even for previously known hosts. Users should 1713 follow the usual procedure for verifying host keys before 1714 accepting the RSA key. 1715 1716 This can be circumvented by setting the "HostKeyAlgorithms" 1717 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1718 command line. 1719 1720 Please note that the sequence of keys offered for 1721 authentication has been changed as well. You may want to 1722 specify IdentityFile in a different order to revert this 1723 behavior. 1724 172520080713: 1726 The sio(4) driver has been removed from the i386 and amd64 1727 kernel configuration files. This means uart(4) is now the 1728 default serial port driver on those platforms as well. 1729 1730 To prevent collisions with the sio(4) driver, the uart(4) driver 1731 uses different names for its device nodes. This means the 1732 onboard serial port will now most likely be called "ttyu0" 1733 instead of "ttyd0". You may need to reconfigure applications to 1734 use the new device names. 1735 1736 When using the serial port as a boot console, be sure to update 1737 /boot/device.hints and /etc/ttys before booting the new kernel. 1738 If you forget to do so, you can still manually specify the hints 1739 at the loader prompt: 1740 1741 set hint.uart.0.at="isa" 1742 set hint.uart.0.port="0x3F8" 1743 set hint.uart.0.flags="0x10" 1744 set hint.uart.0.irq="4" 1745 boot -s 1746 174720080609: 1748 The gpt(8) utility has been removed. Use gpart(8) to partition 1749 disks instead. 1750 175120080603: 1752 The version that Linuxulator emulates was changed from 2.4.2 1753 to 2.6.16. If you experience any problems with Linux binaries 1754 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1755 if it fixes the problem contact emulation mailing list. 1756 175720080525: 1758 ISDN4BSD (I4B) was removed from the src tree. You may need to 1759 update a your kernel configuration and remove relevant entries. 1760 176120080509: 1762 I have checked in code to support multiple routing tables. 1763 See the man pages setfib(1) and setfib(2). 1764 This is a hopefully backwards compatible version, 1765 but to make use of it you need to compile your kernel 1766 with options ROUTETABLES=2 (or more up to 16). 1767 176820080420: 1769 The 802.11 wireless support was redone to enable multi-bss 1770 operation on devices that are capable. The underlying device 1771 is no longer used directly but instead wlanX devices are 1772 cloned with ifconfig. This requires changes to rc.conf files. 1773 For example, change: 1774 ifconfig_ath0="WPA DHCP" 1775 to 1776 wlans_ath0=wlan0 1777 ifconfig_wlan0="WPA DHCP" 1778 see rc.conf(5) for more details. In addition, mergemaster of 1779 /etc/rc.d is highly recommended. Simultaneous update of userland 1780 and kernel wouldn't hurt either. 1781 1782 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1783 modules were merged into the base wlan module. All references 1784 to these modules (e.g. in kernel config files) must be removed. 1785 178620080408: 1787 psm(4) has gained write(2) support in native operation level. 1788 Arbitrary commands can be written to /dev/psm%d and status can 1789 be read back from it. Therefore, an application is responsible 1790 for status validation and error recovery. It is a no-op in 1791 other operation levels. 1792 179320080312: 1794 Support for KSE threading has been removed from the kernel. To 1795 run legacy applications linked against KSE libmap.conf may 1796 be used. The following libmap.conf may be used to ensure 1797 compatibility with any prior release: 1798 1799 libpthread.so.1 libthr.so.1 1800 libpthread.so.2 libthr.so.2 1801 libkse.so.3 libthr.so.3 1802 180320080301: 1804 The layout of struct vmspace has changed. This affects libkvm 1805 and any executables that link against libkvm and use the 1806 kvm_getprocs() function. In particular, but not exclusively, 1807 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1808 The effects are minimal, but it's advisable to upgrade world 1809 nonetheless. 1810 181120080229: 1812 The latest em driver no longer has support in it for the 1813 82575 adapter, this is now moved to the igb driver. The 1814 split was done to make new features that are incompatible 1815 with older hardware easier to do. 1816 181720080220: 1818 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1819 likewise the kernel option is now GEOM_LINUX_LVM. 1820 182120080211: 1822 The default NFS mount mode has changed from UDP to TCP for 1823 increased reliability. If you rely on (insecurely) NFS 1824 mounting across a firewall you may need to update your 1825 firewall rules. 1826 182720080208: 1828 Belatedly note the addition of m_collapse for compacting 1829 mbuf chains. 1830 183120080126: 1832 The fts(3) structures have been changed to use adequate 1833 integer types for their members and so to be able to cope 1834 with huge file trees. The old fts(3) ABI is preserved 1835 through symbol versioning in libc, so third-party binaries 1836 using fts(3) should still work, although they will not take 1837 advantage of the extended types. At the same time, some 1838 third-party software might fail to build after this change 1839 due to unportable assumptions made in its source code about 1840 fts(3) structure members. Such software should be fixed 1841 by its vendor or, in the worst case, in the ports tree. 1842 FreeBSD_version 800015 marks this change for the unlikely 1843 case that a portable fix is impossible. 1844 184520080123: 1846 To upgrade to -current after this date, you must be running 1847 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1848 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1849 185020071128: 1851 The ADAPTIVE_GIANT kernel option has been retired because its 1852 functionality is the default now. 1853 185420071118: 1855 The AT keyboard emulation of sunkbd(4) has been turned on 1856 by default. In order to make the special symbols of the Sun 1857 keyboards driven by sunkbd(4) work under X these now have 1858 to be configured the same way as Sun USB keyboards driven 1859 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1860 1861 Option "XkbLayout" "us" 1862 Option "XkbRules" "xorg" 1863 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1864 186520071024: 1866 It has been decided that it is desirable to provide ABI 1867 backwards compatibility to the FreeBSD 4/5/6 versions of the 1868 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1869 broken with the introduction of PCI domain support (see the 1870 20070930 entry). Unfortunately, this required the ABI of 1871 PCIOCGETCONF to be broken again in order to be able to 1872 provide backwards compatibility to the old version of that 1873 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1874 again. As for prominent ports this affects neither pciutils 1875 nor xorg-server this time, the hal port needs to be rebuilt 1876 however. 1877 187820071020: 1879 The misnamed kthread_create() and friends have been renamed 1880 to kproc_create() etc. Many of the callers already 1881 used kproc_start().. 1882 I will return kthread_create() and friends in a while 1883 with implementations that actually create threads, not procs. 1884 Renaming corresponds with version 800002. 1885 188620071010: 1887 RELENG_7 branched. 1888 1889COMMON ITEMS: 1890 1891 General Notes 1892 ------------- 1893 Avoid using make -j when upgrading. While generally safe, there are 1894 sometimes problems using -j to upgrade. If your upgrade fails with 1895 -j, please try again without -j. From time to time in the past there 1896 have been problems using -j with buildworld and/or installworld. This 1897 is especially true when upgrading between "distant" versions (eg one 1898 that cross a major release boundary or several minor releases, or when 1899 several months have passed on the -current branch). 1900 1901 Sometimes, obscure build problems are the result of environment 1902 poisoning. This can happen because the make utility reads its 1903 environment when searching for values for global variables. To run 1904 your build attempts in an "environmental clean room", prefix all make 1905 commands with 'env -i '. See the env(1) manual page for more details. 1906 1907 When upgrading from one major version to another it is generally best 1908 to upgrade to the latest code in the currently installed branch first, 1909 then do an upgrade to the new branch. This is the best-tested upgrade 1910 path, and has the highest probability of being successful. Please try 1911 this approach before reporting problems with a major version upgrade. 1912 1913 When upgrading a live system, having a root shell around before 1914 installing anything can help undo problems. Not having a root shell 1915 around can lead to problems if pam has changed too much from your 1916 starting point to allow continued authentication after the upgrade. 1917 1918 ZFS notes 1919 --------- 1920 When upgrading the boot ZFS pool to a new version, always follow 1921 these two steps: 1922 1923 1.) recompile and reinstall the ZFS boot loader and boot block 1924 (this is part of "make buildworld" and "make installworld") 1925 1926 2.) update the ZFS boot block on your boot drive 1927 1928 The following example updates the ZFS boot block on the first 1929 partition (freebsd-boot) of a GPT partitioned drive ad0: 1930 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1931 1932 Non-boot pools do not need these updates. 1933 1934 To build a kernel 1935 ----------------- 1936 If you are updating from a prior version of FreeBSD (even one just 1937 a few days old), you should follow this procedure. It is the most 1938 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1939 1940 make kernel-toolchain 1941 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1942 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1943 1944 To test a kernel once 1945 --------------------- 1946 If you just want to boot a kernel once (because you are not sure 1947 if it works, or if you want to boot a known bad kernel to provide 1948 debugging information) run 1949 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1950 nextboot -k testkernel 1951 1952 To just build a kernel when you know that it won't mess you up 1953 -------------------------------------------------------------- 1954 This assumes you are already running a CURRENT system. Replace 1955 ${arch} with the architecture of your machine (e.g. "i386", 1956 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1957 1958 cd src/sys/${arch}/conf 1959 config KERNEL_NAME_HERE 1960 cd ../compile/KERNEL_NAME_HERE 1961 make depend 1962 make 1963 make install 1964 1965 If this fails, go to the "To build a kernel" section. 1966 1967 To rebuild everything and install it on the current system. 1968 ----------------------------------------------------------- 1969 # Note: sometimes if you are running current you gotta do more than 1970 # is listed here if you are upgrading from a really old current. 1971 1972 <make sure you have good level 0 dumps> 1973 make buildworld 1974 make kernel KERNCONF=YOUR_KERNEL_HERE 1975 [1] 1976 <reboot in single user> [3] 1977 mergemaster -p [5] 1978 make installworld 1979 mergemaster -i [4] 1980 make delete-old [6] 1981 <reboot> 1982 1983 To cross-install current onto a separate partition 1984 -------------------------------------------------- 1985 # In this approach we use a separate partition to hold 1986 # current's root, 'usr', and 'var' directories. A partition 1987 # holding "/", "/usr" and "/var" should be about 2GB in 1988 # size. 1989 1990 <make sure you have good level 0 dumps> 1991 <boot into -stable> 1992 make buildworld 1993 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1994 <maybe newfs current's root partition> 1995 <mount current's root partition on directory ${CURRENT_ROOT}> 1996 make installworld DESTDIR=${CURRENT_ROOT} 1997 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1998 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1999 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 2000 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 2001 <reboot into current> 2002 <do a "native" rebuild/install as described in the previous section> 2003 <maybe install compatibility libraries from ports/misc/compat*> 2004 <reboot> 2005 2006 2007 To upgrade in-place from stable to current 2008 ---------------------------------------------- 2009 <make sure you have good level 0 dumps> 2010 make buildworld [9] 2011 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 2012 [1] 2013 <reboot in single user> [3] 2014 mergemaster -p [5] 2015 make installworld 2016 mergemaster -i [4] 2017 make delete-old [6] 2018 <reboot> 2019 2020 Make sure that you've read the UPDATING file to understand the 2021 tweaks to various things you need. At this point in the life 2022 cycle of current, things change often and you are on your own 2023 to cope. The defaults can also change, so please read ALL of 2024 the UPDATING entries. 2025 2026 Also, if you are tracking -current, you must be subscribed to 2027 freebsd-current@freebsd.org. Make sure that before you update 2028 your sources that you have read and understood all the recent 2029 messages there. If in doubt, please track -stable which has 2030 much fewer pitfalls. 2031 2032 [1] If you have third party modules, such as vmware, you 2033 should disable them at this point so they don't crash your 2034 system on reboot. 2035 2036 [3] From the bootblocks, boot -s, and then do 2037 fsck -p 2038 mount -u / 2039 mount -a 2040 cd src 2041 adjkerntz -i # if CMOS is wall time 2042 Also, when doing a major release upgrade, it is required that 2043 you boot into single user mode to do the installworld. 2044 2045 [4] Note: This step is non-optional. Failure to do this step 2046 can result in a significant reduction in the functionality of the 2047 system. Attempting to do it by hand is not recommended and those 2048 that pursue this avenue should read this file carefully, as well 2049 as the archives of freebsd-current and freebsd-hackers mailing lists 2050 for potential gotchas. The -U option is also useful to consider. 2051 See mergemaster(8) for more information. 2052 2053 [5] Usually this step is a noop. However, from time to time 2054 you may need to do this if you get unknown user in the following 2055 step. It never hurts to do it all the time. You may need to 2056 install a new mergemaster (cd src/usr.sbin/mergemaster && make 2057 install) after the buildworld before this step if you last updated 2058 from current before 20130425 or from -stable before 20130430. 2059 2060 [6] This only deletes old files and directories. Old libraries 2061 can be deleted by "make delete-old-libs", but you have to make 2062 sure that no program is using those libraries anymore. 2063 2064 [8] In order to have a kernel that can run the 4.x binaries needed to 2065 do an installworld, you must include the COMPAT_FREEBSD4 option in 2066 your kernel. Failure to do so may leave you with a system that is 2067 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 2068 required to run the 5.x binaries on more recent kernels. And so on 2069 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 2070 2071 Make sure that you merge any new devices from GENERIC since the 2072 last time you updated your kernel config file. 2073 2074 [9] When checking out sources, you must include the -P flag to have 2075 cvs prune empty directories. 2076 2077 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 2078 "?=" instead of the "=" assignment operator, so that buildworld can 2079 override the CPUTYPE if it needs to. 2080 2081 MAKEOBJDIRPREFIX must be defined in an environment variable, and 2082 not on the command line, or in /etc/make.conf. buildworld will 2083 warn if it is improperly defined. 2084FORMAT: 2085 2086This file contains a list, in reverse chronological order, of major 2087breakages in tracking -current. It is not guaranteed to be a complete 2088list of such breakages, and only contains entries since October 10, 2007. 2089If you need to see UPDATING entries from before that date, you will need 2090to fetch an UPDATING file from an older FreeBSD release. 2091 2092Copyright information: 2093 2094Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 2095 2096Redistribution, publication, translation and use, with or without 2097modification, in full or in part, in any form or format of this 2098document are permitted without further permission from the author. 2099 2100THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 2101IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 2102WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2103DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 2104INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2105(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2106SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2107HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2108STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2109IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2110POSSIBILITY OF SUCH DAMAGE. 2111 2112Contact Warner Losh if you have any questions about your use of 2113this document. 2114 2115$FreeBSD: releng/10.0/UPDATING 273415 2014-10-21 20:21:10Z delphij $ 2116