UPDATING revision 261989
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 19 2020140216: 21 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has 22 been deprecated and will not be part of FreeBSD 11.0 and later 23 releases. If you use this driver, please consider switching to 24 the nfe(4) driver instead. 25 2620140120: 27 10.0-RELEASE. 28 2920131216: 30 The behavior of gss_pseudo_random() for the krb5 mechanism 31 has changed, for applications requesting a longer random string 32 than produced by the underlying enctype's pseudo-random() function. 33 In particular, the random string produced from a session key of 34 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 35 be different at the 17th octet and later, after this change. 36 The counter used in the PRF+ construction is now encoded as a 37 big-endian integer in accordance with RFC 4402. 38 __FreeBSD_version is bumped to 1000701. 39 4020131108: 41 The WITHOUT_ATF build knob has been removed and its functionality 42 has been subsumed into the more generic WITHOUT_TESTS. If you were 43 using the former to disable the build of the ATF libraries, you 44 should change your settings to use the latter. 45 4620131031: 47 The default version of mtree is nmtree which is obtained from 48 NetBSD. The output is generally the same, but may vary 49 slightly. If you found you need identical output adding 50 "-F freebsd9" to the command line should do the trick. For the 51 time being, the old mtree is available as fmtree. 52 5320131014: 54 libbsdyml has been renamed to libyaml and moved to /usr/lib/private. 55 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg 56 1.1.4_8 and verify bsdyml not linked in, before running "make 57 delete-old-libs": 58 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean 59 or 60 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml 61 6220131010: 63 The rc.d/jail script has been updated to support jail(8) 64 configuration file. The "jail_<jname>_*" rc.conf(5) variables 65 for per-jail configuration are automatically converted to 66 /var/run/jail.<jname>.conf before the jail(8) utility is invoked. 67 This is transparently backward compatible. See below about some 68 incompatibilities and rc.conf(5) manual page for more details. 69 70 These variables are now deprecated in favor of jail(8) configuration 71 file. One can use "rc.d/jail config <jname>" command to generate 72 a jail(8) configuration file in /var/run/jail.<jname>.conf without 73 running the jail(8) utility. The default pathname of the 74 configuration file is /etc/jail.conf and can be specified by 75 using $jail_conf or $jail_<jname>_conf variables. 76 77 Please note that jail_devfs_ruleset accepts an integer at 78 this moment. Please consider to rewrite the ruleset name 79 with an integer. 80 8120130930: 82 BIND has been removed from the base system. If all you need 83 is a local resolver, simply enable and start the local_unbound 84 service instead. Otherwise, several versions of BIND are 85 available in the ports tree. The dns/bind99 port is one example. 86 87 With this change, nslookup(1) and dig(1) are no longer in the base 88 system. Users should instead use host(1) and drill(1) which are 89 in the base system. Alternatively, nslookup and dig can 90 be obtained by installing the dns/bind-tools port. 91 9220130916: 93 With the addition of unbound(8), a new unbound user is now 94 required during installworld. "mergemaster -p" can be used to 95 add the user prior to installworld, as documented in the handbook. 96 9720130911: 98 OpenSSH is now built with DNSSEC support, and will by default 99 silently trust signed SSHFP records. This can be controlled with 100 the VerifyHostKeyDNS client configuration setting. DNSSEC support 101 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 102 10320130906: 104 The GNU Compiler Collection and C++ standard library (libstdc++) 105 are no longer built by default on platforms where clang is the system 106 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 107 options in src.conf. 108 10920130905: 110 The PROCDESC kernel option is now part of the GENERIC kernel 111 configuration and is required for the rwhod(8) to work. 112 If you are using custom kernel configuration, you should include 113 'options PROCDESC'. 114 11520130905: 116 The API and ABI related to the Capsicum framework was modified 117 in backward incompatible way. The userland libraries and programs 118 have to be recompiled to work with the new kernel. This includes the 119 following libraries and programs, but the whole buildworld is 120 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 121 kdump, procstat, rwho, rwhod, uniq. 122 12320130903: 124 AES-NI intrinsic support has been added to gcc. The AES-NI module 125 has been updated to use this support. A new gcc is required to build 126 the aesni module on both i386 and amd64. 127 12820130821: 129 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 130 Thus "device padlock_rng" and "device rdrand_rng" should be 131 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 132 13320130813: 134 WITH_ICONV has been split into two feature sets. WITH_ICONV now 135 enables just the iconv* functionality and is now on by default. 136 WITH_LIBICONV_COMPAT enables the libiconv api and link time 137 compatability. Set WITHOUT_ICONV to build the old way. 138 If you have been using WITH_ICONV before, you will very likely 139 need to turn on WITH_LIBICONV_COMPAT. 140 14120130806: 142 INVARIANTS option now enables DEBUG for code with OpenSolaris and 143 Illumos origin, including ZFS. If you have INVARIANTS in your 144 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 145 explicitly. 146 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 147 locks if WITNESS option was set. Because that generated a lot of 148 witness(9) reports and all of them were believed to be false 149 positives, this is no longer done. New option OPENSOLARIS_WITNESS 150 can be used to achieve the previous behavior. 151 15220130806: 153 Timer values in IPv6 data structures now use time_uptime instead 154 of time_second. Although this is not a user-visible functional 155 change, userland utilities which directly use them---ndp(8), 156 rtadvd(8), and rtsold(8) in the base system---need to be updated 157 to r253970 or later. 158 15920130802: 160 find -delete can now delete the pathnames given as arguments, 161 instead of only files found below them or if the pathname did 162 not contain any slashes. Formerly, the following error message 163 would result: 164 165 find: -delete: <path>: relative path potentially not safe 166 167 Deleting the pathnames given as arguments can be prevented 168 without error messages using -mindepth 1 or by changing 169 directory and passing "." as argument to find. This works in the 170 old as well as the new version of find. 171 17220130726: 173 Behavior of devfs rules path matching has been changed. 174 Pattern is now always matched against fully qualified devfs 175 path and slash characters must be explicitly matched by 176 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 177 subdirectories must be reviewed. 178 17920130716: 180 The default ARM ABI has changed to the ARM EABI. The old ABI is 181 incompatible with the ARM EABI and all programs and modules will 182 need to be rebuilt to work with a new kernel. 183 184 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 185 186 NOTE: Support for the old ABI will be removed in the future and 187 users are advised to upgrade. 188 18920130709: 190 pkg_install has been disconnected from the build if you really need it 191 you should add WITH_PKGTOOLS in your src.conf(5). 192 19320130709: 194 Most of network statistics structures were changed to be able 195 keep 64-bits counters. Thus all tools, that work with networking 196 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 197 19820130629: 199 Fix targets that run multiple make's to use && rather than ; 200 so that subsequent steps depend on success of previous. 201 202 NOTE: if building 'universe' with -j* on stable/8 or stable/9 203 it would be better to start the build using bmake, to avoid 204 overloading the machine. 205 20620130618: 207 Fix a bug that allowed a tracing process (e.g. gdb) to write 208 to a memory-mapped file in the traced process's address space 209 even if neither the traced process nor the tracing process had 210 write access to that file. 211 21220130615: 213 CVS has been removed from the base system. An exact copy 214 of the code is available from the devel/cvs port. 215 21620130613: 217 Some people report the following error after the switch to bmake: 218 219 make: illegal option -- J 220 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 221 ... 222 *** [buildworld] Error code 2 223 224 this likely due to an old instance of make in 225 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 226 which src/Makefile will use that blindly, if it exists, so if 227 you see the above error: 228 229 rm -rf `make -V MAKEPATH` 230 231 should resolve it. 232 23320130516: 234 Use bmake by default. 235 Whereas before one could choose to build with bmake via 236 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 237 make. The goal is to remove these knobs for 10-RELEASE. 238 239 It is worth noting that bmake (like gmake) treats the command 240 line as the unit of failure, rather than statements within the 241 command line. Thus '(cd some/where && dosomething)' is safer 242 than 'cd some/where; dosomething'. The '()' allows consistent 243 behavior in parallel build. 244 24520130429: 246 Fix a bug that allows NFS clients to issue READDIR on files. 247 24820130426: 249 The WITHOUT_IDEA option has been removed because 250 the IDEA patent expired. 251 25220130426: 253 The sysctl which controls TRIM support under ZFS has been renamed 254 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 255 enabled by default. 256 25720130425: 258 The mergemaster command now uses the default MAKEOBJDIRPREFIX 259 rather than creating it's own in the temporary directory in 260 order allow access to bootstrapped versions of tools such as 261 install and mtree. When upgrading from version of FreeBSD where 262 the install command does not support -l, you will need to 263 install a new mergemaster command if mergemaster -p is required. 264 This can be accomplished with the command (cd src/usr.sbin/mergemaster 265 && make install). 266 26720130404: 268 Legacy ATA stack, disabled and replaced by new CAM-based one since 269 FreeBSD 9.0, completely removed from the sources. Kernel modules 270 atadisk and atapi*, user-level tools atacontrol and burncd are 271 removed. Kernel option `options ATA_CAM` is now permanently enabled 272 and removed. 273 27420130319: 275 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 276 and socketpair(2). Software, in particular Kerberos, may 277 automatically detect and use these during building. The resulting 278 binaries will not work on older kernels. 279 28020130308: 281 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 282 information, see the respective 20130304 entry). 283 28420130304: 285 Recent commits to callout(9) changed the size of struct callout, 286 so the KBI is probably heavily disturbed. Also, some functions 287 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 288 by macros. Every kernel module using it won't load, so rebuild 289 is requested. 290 291 The ctl device has been re-enabled in GENERIC for i386 and amd64, 292 but does not initialize by default (because of the new CTL_DISABLE 293 option) to save memory. To re-enable it, remove the CTL_DISABLE 294 option from the kernel config file or set kern.cam.ctl.disable=0 295 in /boot/loader.conf. 296 29720130301: 298 The ctl device has been disabled in GENERIC for i386 and amd64. 299 This was done due to the extra memory being allocated at system 300 initialisation time by the ctl driver which was only used if 301 a CAM target device was created. This makes a FreeBSD system 302 unusable on 128MB or less of RAM. 303 30420130208: 305 A new compression method (lz4) has been merged to -HEAD. Please 306 refer to zpool-features(7) for more information. 307 308 Please refer to the "ZFS notes" section of this file for information 309 on upgrading boot ZFS pools. 310 31120130129: 312 A BSD-licensed patch(1) variant has been added and is installed 313 as bsdpatch, being the GNU version the default patch. 314 To inverse the logic and use the BSD-licensed one as default, 315 while having the GNU version installed as gnupatch, rebuild 316 and install world with the WITH_BSD_PATCH knob set. 317 31820130121: 319 Due to the use of the new -l option to install(1) during build 320 and install, you must take care not to directly set the INSTALL 321 make variable in your /etc/make.conf, /etc/src.conf, or on the 322 command line. If you wish to use the -C flag for all installs 323 you may be able to add INSTALL+=-C to /etc/make.conf or 324 /etc/src.conf. 325 32620130118: 327 The install(1) option -M has changed meaning and now takes an 328 argument that is a file or path to append logs to. In the 329 unlikely event that -M was the last option on the command line 330 and the command line contained at least two files and a target 331 directory the first file will have logs appended to it. The -M 332 option served little practical purpose in the last decade so its 333 use is expected to be extremely rare. 334 33520121223: 336 After switching to Clang as the default compiler some users of ZFS 337 on i386 systems started to experience stack overflow kernel panics. 338 Please consider using 'options KSTACK_PAGES=4' in such configurations. 339 34020121222: 341 GEOM_LABEL now mangles label names read from file system metadata. 342 Mangling affect labels containing spaces, non-printable characters, 343 '%' or '"'. Device names in /etc/fstab and other places may need to 344 be updated. 345 34620121217: 347 By default, only the 10 most recent kernel dumps will be saved. To 348 restore the previous behaviour (no limit on the number of kernel dumps 349 stored in the dump directory) add the following line to /etc/rc.conf: 350 351 savecore_flags="" 352 35320121201: 354 With the addition of auditdistd(8), a new auditdistd user is now 355 required during installworld. "mergemaster -p" can be used to 356 add the user prior to installworld, as documented in the handbook. 357 35820121117: 359 The sin6_scope_id member variable in struct sockaddr_in6 is now 360 filled by the kernel before passing the structure to the userland via 361 sysctl or routing socket. This means the KAME-specific embedded scope 362 id in sin6_addr.s6_addr[2] is always cleared in userland application. 363 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 364 __FreeBSD_version is bumped to 1000025. 365 36620121105: 367 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 368 This means that the world and kernel will be compiled with clang 369 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 370 and /usr/bin/cpp. To disable this behavior and revert to building 371 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 372 of current may need to bootstrap WITHOUT_CLANG first if the clang 373 build fails (its compatibility window doesn't extend to the 9 stable 374 branch point). 375 37620121102: 377 The IPFIREWALL_FORWARD kernel option has been removed. Its 378 functionality now turned on by default. 379 38020121023: 381 The ZERO_COPY_SOCKET kernel option has been removed and 382 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 383 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 384 mechanism which is not safe and may result in kernel crashes. 385 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 386 driver supports disposeable external page sized mbuf storage. 387 Proper replacements for both zero-copy mechanisms are under 388 consideration and will eventually lead to complete removal 389 of the two kernel options. 390 39120121023: 392 The IPv4 network stack has been converted to network byte 393 order. The following modules need to be recompiled together 394 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 395 pf(4), ipfw(4), ng_ipfw(4), stf(4). 396 39720121022: 398 Support for non-MPSAFE filesystems was removed from VFS. The 399 VFS_VERSION was bumped, all filesystem modules shall be 400 recompiled. 401 40220121018: 403 All the non-MPSAFE filesystems have been disconnected from 404 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 405 portalfs, smbfs, xfs. 406 40720121016: 408 The interface cloning API and ABI has changed. The following 409 modules need to be recompiled together with kernel: 410 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 411 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 412 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 413 41420121015: 415 The sdhci driver was split in two parts: sdhci (generic SD Host 416 Controller logic) and sdhci_pci (actual hardware driver). 417 No kernel config modifications are required, but if you 418 load sdhc as a module you must switch to sdhci_pci instead. 419 42020121014: 421 Import the FUSE kernel and userland support into base system. 422 42320121013: 424 The GNU sort(1) program has been removed since the BSD-licensed 425 sort(1) has been the default for quite some time and no serious 426 problems have been reported. The corresponding WITH_GNU_SORT 427 knob has also gone. 428 42920121006: 430 The pfil(9) API/ABI for AF_INET family has been changed. Packet 431 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 432 with new kernel. 433 43420121001: 435 The net80211(4) ABI has been changed to allow for improved driver 436 PS-POLL and power-save support. All wireless drivers need to be 437 recompiled to work with the new kernel. 438 43920120913: 440 The random(4) support for the VIA hardware random number 441 generator (`PADLOCK') is no longer enabled unconditionally. 442 Add the padlock_rng device in the custom kernel config if 443 needed. The GENERIC kernels on i386 and amd64 do include the 444 device, so the change only affects the custom kernel 445 configurations. 446 44720120908: 448 The pf(4) packet filter ABI has been changed. pfctl(8) and 449 snmp_pf module need to be recompiled to work with new kernel. 450 45120120828: 452 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 453 to -HEAD. Pools that have empty_bpobj in active state can not be 454 imported read-write with ZFS implementations that do not support 455 this feature. For more information read the zpool-features(5) 456 manual page. 457 45820120727: 459 The sparc64 ZFS loader has been changed to no longer try to auto- 460 detect ZFS providers based on diskN aliases but now requires these 461 to be explicitly listed in the OFW boot-device environment variable. 462 46320120712: 464 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 465 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 466 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 467 46820120712: 469 The following sysctls and tunables have been renamed for consistency 470 with other variables: 471 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 472 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 473 47420120628: 475 The sort utility has been replaced with BSD sort. For now, GNU sort 476 is also available as "gnusort" or the default can be set back to 477 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 478 installed as "bsdsort". 479 48020120611: 481 A new version of ZFS (pool version 5000) has been merged to -HEAD. 482 Starting with this version the old system of ZFS pool versioning 483 is superseded by "feature flags". This concept enables forward 484 compatibility against certain future changes in functionality of ZFS 485 pools. The first read-only compatible "feature flag" for ZFS pools 486 is named "com.delphix:async_destroy". For more information 487 read the new zpool-features(5) manual page. 488 Please refer to the "ZFS notes" section of this file for information 489 on upgrading boot ZFS pools. 490 49120120417: 492 The malloc(3) implementation embedded in libc now uses sources imported 493 as contrib/jemalloc. The most disruptive API change is to 494 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 495 delete it prior to installworld, and optionally re-create it using the 496 new format after rebooting. See malloc.conf(5) for details 497 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 498 NAMESPACE section). 499 50020120328: 501 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 502 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 503 now spelled mips. This is to aid compatibility with third-party 504 software that expects this naming scheme in uname(3). Little-endian 505 settings are unchanged. If you are updating a big-endian mips64 machine 506 from before this change, you may need to set MACHINE_ARCH=mips64 in 507 your environment before the new build system will recognize your machine. 508 50920120306: 510 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 511 platforms. 512 51320120229: 514 Now unix domain sockets behave "as expected" on nullfs(5). Previously 515 nullfs(5) did not pass through all behaviours to the underlying layer, 516 as a result if we bound to a socket on the lower layer we could connect 517 only to the lower path; if we bound to the upper layer we could connect 518 only to the upper path. The new behavior is one can connect to both the 519 lower and the upper paths regardless what layer path one binds to. 520 52120120211: 522 The getifaddrs upgrade path broken with 20111215 has been restored. 523 If you have upgraded in between 20111215 and 20120209 you need to 524 recompile libc again with your kernel. You still need to recompile 525 world to be able to configure CARP but this restriction already 526 comes from 20111215. 527 52820120114: 529 The set_rcvar() function has been removed from /etc/rc.subr. All 530 base and ports rc.d scripts have been updated, so if you have a 531 port installed with a script in /usr/local/etc/rc.d you can either 532 hand-edit the rcvar= line, or reinstall the port. 533 534 An easy way to handle the mass-update of /etc/rc.d: 535 rm /etc/rc.d/* && mergemaster -i 536 53720120109: 538 panic(9) now stops other CPUs in the SMP systems, disables interrupts 539 on the current CPU and prevents other threads from running. 540 This behavior can be reverted using the kern.stop_scheduler_on_panic 541 tunable/sysctl. 542 The new behavior can be incompatible with kern.sync_on_panic. 543 54420111215: 545 The carp(4) facility has been changed significantly. Configuration 546 of the CARP protocol via ifconfig(8) has changed, as well as format 547 of CARP events submitted to devd(8) has changed. See manual pages 548 for more information. The arpbalance feature of carp(4) is currently 549 not supported anymore. 550 551 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 552 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 553 need to be recompiled. 554 55520111122: 556 The acpi_wmi(4) status device /dev/wmistat has been renamed to 557 /dev/wmistat0. 558 55920111108: 560 The option VFS_ALLOW_NONMPSAFE option has been added in order to 561 explicitely support non-MPSAFE filesystems. 562 It is on by default for all supported platform at this present 563 time. 564 56520111101: 566 The broken amd(4) driver has been replaced with esp(4) in the amd64, 567 i386 and pc98 GENERIC kernel configuration files. 568 56920110930: 570 sysinstall has been removed 571 57220110923: 573 The stable/9 branch created in subversion. This corresponds to the 574 RELENG_9 branch in CVS. 575 57620110913: 577 This commit modifies vfs_register() so that it uses a hash 578 calculation to set vfc_typenum, which is enabled by default. 579 The first time a system is booted after this change, the 580 vfc_typenum values will change for all file systems. The 581 main effect of this is a change to the NFS server file handles 582 for file systems that use vfc_typenum in their fsid, such as ZFS. 583 It will, however, prevent vfc_typenum from changing when file 584 systems are loaded in a different order for subsequent reboots. 585 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 586 until you are ready to remount all NFS clients after a reboot. 587 58820110828: 589 Bump the shared library version numbers for libraries that 590 do not use symbol versioning, have changed the ABI compared 591 to stable/8 and which shared library version was not bumped. 592 Done as part of 9.0-RELEASE cycle. 593 59420110815: 595 During the merge of Capsicum features, the fget(9) KPI was modified. 596 This may require the rebuilding of out-of-tree device drivers -- 597 issues have been reported specifically with the nVidia device driver. 598 __FreeBSD_version is bumped to 900041. 599 600 Also, there is a period between 20110811 and 20110814 where the 601 special devices /dev/{stdin,stdout,stderr} did not work correctly. 602 Building world from a kernel during that window may not work. 603 60420110628: 605 The packet filter (pf) code has been updated to OpenBSD 4.5. 606 You need to update userland tools to be in sync with kernel. 607 This update breaks backward compatibility with earlier pfsync(4) 608 versions. Care must be taken when updating redundant firewall setups. 609 61020110608: 611 The following sysctls and tunables are retired on x86 platforms: 612 machdep.hlt_cpus 613 machdep.hlt_logical_cpus 614 The following sysctl is retired: 615 machdep.hyperthreading_allowed 616 The sysctls were supposed to provide a way to dynamically offline and 617 online selected CPUs on x86 platforms, but the implementation has not 618 been reliable especially with SCHED_ULE scheduler. 619 machdep.hyperthreading_allowed tunable is still available to ignore 620 hyperthreading CPUs at OS level. 621 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 622 where X is an APIC ID of a CPU. Be advised, though, that disabling 623 CPUs in non-uniform fashion will result in non-uniform topology and 624 may lead to sub-optimal system performance with SCHED_ULE, which is 625 a default scheduler. 626 62720110607: 628 cpumask_t type is retired and cpuset_t is used in order to describe 629 a mask of CPUs. 630 63120110531: 632 Changes to ifconfig(8) for dynamic address family detection mandate 633 that you are running a kernel of 20110525 or later. Make sure to 634 follow the update procedure to boot a new kernel before installing 635 world. 636 63720110513: 638 Support for sun4v architecture is officially dropped 639 64020110503: 641 Several KPI breaking changes have been committed to the mii(4) layer, 642 the PHY drivers and consequently some Ethernet drivers using mii(4). 643 This means that miibus.ko and the modules of the affected Ethernet 644 drivers need to be recompiled. 645 646 Note to kernel developers: Given that the OUI bit reversion problem 647 was fixed as part of these changes all mii(4) commits related to OUIs, 648 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 649 handling, no longer can be merged verbatim to stable/8 and previous 650 branches. 651 65220110430: 653 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 654 into their kernel configurations along with 'device pci'. 655 65620110427: 657 The default NFS client is now the new NFS client, so fstype "newnfs" 658 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 659 Although mounts via fstype "nfs" will usually work without userland 660 changes, it is recommended that the mount(8) and mount_nfs(8) 661 commands be rebuilt from sources and that a link to mount_nfs called 662 mount_oldnfs be created. The new client is compiled into the 663 kernel with "options NFSCL" and this is needed for diskless root 664 file systems. The GENERIC kernel configs have been changed to use 665 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 666 To use the regular/old client, you can "mount -t oldnfs ...". For 667 a diskless root file system, you must also include a line like: 668 669 vfs.root.mountfrom="oldnfs:" 670 671 in the boot/loader.conf on the root fs on the NFS server to make 672 a diskless root fs use the old client. 673 67420110424: 675 The GENERIC kernels for all architectures now default to the new 676 CAM-based ATA stack. It means that all legacy ATA drivers were 677 removed and replaced by respective CAM drivers. If you are using 678 ATA device names in /etc/fstab or other places, make sure to update 679 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 680 where 'Y's are the sequential numbers starting from zero for each type 681 in order of detection, unless configured otherwise with tunables, 682 see cam(4)). There will be symbolic links created in /dev/ to map 683 old adX devices to the respective adaY. They should provide basic 684 compatibility for file systems mounting in most cases, but they do 685 not support old user-level APIs and do not have respective providers 686 in GEOM. Consider using updated management tools with new device names. 687 688 It is possible to load devices ahci, ata, siis and mvs as modules, 689 but option ATA_CAM should remain in kernel configuration to make ata 690 module work as CAM driver supporting legacy ATA controllers. Device ata 691 still can be used in modular fashion (atacore + ...). Modules atadisk 692 and atapi* are not used and won't affect operation in ATA_CAM mode. 693 Note that to use CAM-based ATA kernel should include CAM devices 694 scbus, pass, da (or explicitly ada), cd and optionally others. All of 695 them are parts of the cam module. 696 697 ataraid(4) functionality is now supported by the RAID GEOM class. 698 To use it you can load geom_raid kernel module and use graid(8) tool 699 for management. Instead of /dev/arX device names, use /dev/raid/rX. 700 701 No kernel config options or code have been removed, so if a problem 702 arises, please report it and optionally revert to the old ATA stack. 703 In order to do it you can remove from the kernel config: 704 options ATA_CAM 705 device ahci 706 device mvs 707 device siis 708 , and instead add back: 709 device atadisk # ATA disk drives 710 device ataraid # ATA RAID drives 711 device atapicd # ATAPI CDROM drives 712 device atapifd # ATAPI floppy drives 713 device atapist # ATAPI tape drives 714 71520110423: 716 The default NFS server has been changed to the new server, which 717 was referred to as the experimental server. If you need to switch 718 back to the old NFS server, you must now put the "-o" option on 719 both the mountd and nfsd commands. This can be done using the 720 mountd_flags and nfs_server_flags rc.conf variables until an 721 update to the rc scripts is committed, which is coming soon. 722 72320110418: 724 The GNU Objective-C runtime library (libobjc), and other Objective-C 725 related components have been removed from the base system. If you 726 require an Objective-C library, please use one of the available ports. 727 72820110331: 729 ath(4) has been split into bus- and device- modules. if_ath contains 730 the HAL, the TX rate control and the network device code. if_ath_pci 731 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 732 contains the AHB glue. Users need to load both if_ath_pci and if_ath 733 in order to use ath on everything else. 734 735 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 736 need to load if_ath and if_ath_pci for ath(4) operation. 737 73820110314: 739 As part of the replacement of sysinstall, the process of building 740 release media has changed significantly. For details, please re-read 741 release(7), which has been updated to reflect the new build process. 742 74320110218: 744 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 745 is the last available version under GPLv2. It brings a number of new 746 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 747 4.1 and SSE 4.2), better support for powerpc64, a number of new 748 directives, and lots of other small improvements. See the ChangeLog 749 file in contrib/binutils for the full details. 750 75120110218: 752 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 753 compliant, and will now use half of hash for authentication. 754 This will break interoperability with all stacks (including all 755 actual FreeBSD versions) who implement 756 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 757 authentication). 758 The only workaround with such peers is to use another HMAC 759 algorithm for IPsec ("phase 2") authentication. 760 76120110207: 762 Remove the uio_yield prototype and symbol. This function has 763 been misnamed since it was introduced and should not be 764 globally exposed with this name. The equivalent functionality 765 is now available using kern_yield(curthread->td_user_pri). 766 The function remains undocumented. 767 76820110112: 769 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 770 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 771 for scalar sysctls is defined but disabled. Code that needs 772 UQUAD to pass the type checking that must compile on older 773 systems where the define is not present can check against 774 __FreeBSD_version >= 900030. 775 776 The system dialog(1) has been replaced with a new version previously 777 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 778 with the previous version, but the libdialog associated with it has 779 a largely incompatible API. As such, the original version of libdialog 780 will be kept temporarily as libodialog, until its base system consumers 781 are replaced or updated. Bump __FreeBSD_version to 900030. 782 78320110103: 784 If you are trying to run make universe on a -stable system, and you get 785 the following warning: 786 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 787 unknown. config(8) likely too old." 788 or something similar to it, then you must upgrade your -stable system 789 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 790 stable/8) or build the config from the latest stable/8 branch and 791 install it on your system. 792 793 Prior to this date, building a current universe on 8-stable system from 794 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 795 error in the first kernel build phase. A new config on those old 796 systems will fix that problem for older versions of -current. 797 79820101228: 799 The TCP stack has been modified to allow Khelp modules to interact with 800 it via helper hook points and store per-connection data in the TCP 801 control block. Bump __FreeBSD_version to 900029. User space tools that 802 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 803 be recompiled. 804 80520101114: 806 Generic IEEE 802.3 annex 31B full duplex flow control support has been 807 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 808 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 809 to take advantage of it instead of using custom implementations. This 810 means that these drivers now no longer unconditionally advertise 811 support for flow control but only do so if flow control is a selected 812 media option. This was implemented in the generic support that way in 813 order to allow flow control to be switched on and off via ifconfig(8) 814 with the PHY specific default to typically off in order to protect 815 from unwanted effects. Consequently, if you used flow control with 816 one of the above mentioned drivers you now need to explicitly enable 817 it, for example via: 818 ifconfig bge0 media auto mediaopt flowcontrol 819 820 Along with the above mentioned changes generic support for setting 821 1000baseT master mode also has been added and brgphy(4), ciphy(4), 822 e1000phy(4) as well as ip1000phy(4) have been converted to take 823 advantage of it. This means that these drivers now no longer take the 824 link0 parameter for selecting master mode but the master media option 825 has to be used instead, for example like in the following: 826 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 827 828 Selection of master mode now is also available with all other PHY 829 drivers supporting 1000baseT. 830 83120101111: 832 The TCP stack has received a significant update to add support for 833 modularised congestion control and generally improve the clarity of 834 congestion control decisions. Bump __FreeBSD_version to 900025. User 835 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 836 sockstat) need to be recompiled. 837 83820101002: 839 The man(1) utility has been replaced by a new version that no longer 840 uses /etc/manpath.config. Please consult man.conf(5) for how to 841 migrate local entries to the new format. 842 84320100928: 844 The copyright strings printed by login(1) and sshd(8) at the time of a 845 new connection have been removed to follow other operating systems and 846 upstream sshd. 847 84820100915: 849 A workaround for a fixed ld bug has been removed in kernel code, 850 so make sure that your system ld is built from sources after 851 revision 210245 from 2010-07-19 (r211583 if building head kernel 852 on stable/8, r211584 for stable/7; both from 2010-08-21). 853 A symptom of incorrect ld version is different addresses for 854 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 855 85620100913: 857 The $ipv6_prefer variable in rc.conf(5) has been split into 858 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 859 860 The $ip6addrctl_policy is a variable to choose a pre-defined 861 address selection policy set by ip6addrctl(8). A value 862 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 863 default is "AUTO". 864 865 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 866 flag (see an entry of 20090926) is set on an interface with no 867 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 868 security reason. If you want IPv6 link-local address on all 869 interfaces by default, set this to "YES". 870 871 The old ipv6_prefer="YES" is equivalent to 872 ipv6_activate_all_interfaces="YES" and 873 ip6addrctl_policy="ipv6_prefer". 874 87520100913: 876 DTrace has grown support for userland tracing. Due to this, DTrace is 877 now i386 and amd64 only. 878 dtruss(1) is now installed by default on those systems and a new 879 kernel module is needed for userland tracing: fasttrap. 880 No changes to your kernel config file are necessary to enable 881 userland tracing, but you might consider adding 'STRIP=' and 882 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 883 to have informative userland stack traces in DTrace (ustack). 884 88520100725: 886 The acpi_aiboost(4) driver has been removed in favor of the new 887 aibs(4) driver. You should update your kernel configuration file. 888 88920100722: 890 BSD grep has been imported to the base system and it is built by 891 default. It is completely BSD licensed, highly GNU-compatible, uses 892 less memory than its GNU counterpart and has a small codebase. 893 However, it is slower than its GNU counterpart, which is mostly 894 noticeable for larger searches, for smaller ones it is measurable 895 but not significant. The reason is complex, the most important factor 896 is that we lack a modern and efficient regex library and GNU 897 overcomes this by optimizing the searches internally. Future work 898 on improving the regex performance is planned, for the meantime, 899 users that need better performance, can build GNU grep instead by 900 setting the WITH_GNU_GREP knob. 901 90220100713: 903 Due to the import of powerpc64 support, all existing powerpc kernel 904 configuration files must be updated with a machine directive like this: 905 machine powerpc powerpc 906 907 In addition, an updated config(8) is required to build powerpc kernels 908 after this change. 909 91020100713: 911 A new version of ZFS (version 15) has been merged to -HEAD. 912 This version uses a python library for the following subcommands: 913 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 914 For full functionality of these commands the following port must 915 be installed: sysutils/py-zfs 916 91720100429: 918 'vm_page's are now hashed by physical address to an array of mutexes. 919 Currently this is only used to serialize access to hold_count. Over 920 time the page queue mutex will be peeled away. This changes the size 921 of pmap on every architecture. And requires all callers of vm_page_hold 922 and vm_page_unhold to be updated. 923 92420100402: 925 WITH_CTF can now be specified in src.conf (not recommended, there 926 are some problems with static executables), make.conf (would also 927 affect ports which do not use GNU make and do not override the 928 compile targets) or in the kernel config (via "makeoptions 929 WITH_CTF=yes"). 930 When WITH_CTF was specified there before this was silently ignored, 931 so make sure that WITH_CTF is not used in places which could lead 932 to unwanted behavior. 933 93420100311: 935 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 936 to allow 32-bit compatibility on non-x86 platforms. All kernel 937 configurations on amd64 and ia64 platforms using these options must 938 be modified accordingly. 939 94020100113: 941 The utmp user accounting database has been replaced with utmpx, 942 the user accounting interface standardized by POSIX. 943 Unfortunately the semantics of utmp and utmpx don't match, 944 making it practically impossible to support both interfaces. 945 The user accounting database is used by tools like finger(1), 946 last(1), talk(1), w(1) and ac(8). 947 948 All applications in the base system use utmpx. This means only 949 local binaries (e.g. from the ports tree) may still use these 950 utmp database files. These applications must be rebuilt to make 951 use of utmpx. 952 953 After the system has been upgraded, it is safe to remove the old 954 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 955 assuming their contents is of no importance anymore. Old wtmp 956 databases can only be used by last(1) and ac(8) after they have 957 been converted to the new format using wtmpcvt(1). 958 95920100108: 960 Introduce the kernel thread "deadlock resolver" (which can be enabled 961 via the DEADLKRES option, see NOTES for more details) and the 962 sleepq_type() function for sleepqueues. 963 96420091202: 965 The rc.firewall and rc.firewall6 were unified, and 966 rc.firewall6 and rc.d/ip6fw were removed. 967 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 968 variables are obsoleted. Instead, the following new rc 969 variables are added to rc.d/ipfw: 970 971 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 972 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 973 firewall_simple_onet_ipv6, firewall_trusted_ipv6 974 975 The meanings correspond to the relevant IPv4 variables. 976 97720091125: 978 8.0-RELEASE. 979 98020091113: 981 The default terminal emulation for syscons(4) has been changed 982 from cons25 to xterm on all platforms except pc98. This means 983 that the /etc/ttys file needs to be updated to ensure correct 984 operation of applications on the console. 985 986 The terminal emulation style can be toggled per window by using 987 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 988 options can be used to change the compile-time default back to 989 cons25. 990 991 To prevent graphical artifacts, make sure the TERM environment 992 variable is set to match the terminal emulation that is being 993 performed by syscons(4). 994 99520091109: 996 The layout of the structure ieee80211req_scan_result has changed. 997 Applications that require wireless scan results (e.g. ifconfig(8)) 998 from net80211 need to be recompiled. 999 1000 Applications such as wpa_supplicant(8) may require a full world 1001 build without using NO_CLEAN in order to get synchronized with the 1002 new structure. 1003 100420091025: 1005 The iwn(4) driver has been updated to support the 5000 and 5150 series. 1006 There's one kernel module for each firmware. Adding "device iwnfw" 1007 to the kernel configuration file means including all three firmware 1008 images inside the kernel. If you want to include just the one for 1009 your wireless card, use the devices iwn4965fw, iwn5000fw or 1010 iwn5150fw. 1011 101220090926: 1013 The rc.d/network_ipv6, IPv6 configuration script has been integrated 1014 into rc.d/netif. The changes are the following: 1015 1016 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 1017 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 1018 Note that both variables need the "inet6" keyword at the head. 1019 1020 Do not set $ipv6_network_interfaces manually if you do not 1021 understand what you are doing. It is not needed in most cases. 1022 1023 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 1024 they are obsolete. 1025 1026 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 1027 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 1028 1029 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 1030 all configured interfaces have "inet6 accept_rtadv" in the 1031 $ifconfig_IF_ipv6. These are for backward compatibility. 1032 1033 3. A new variable $ipv6_prefer has been added. If NO, IPv6 1034 functionality of interfaces with no corresponding 1035 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 1036 and the default address selection policy of ip6addrctl(8) 1037 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 1038 Note that if you want to configure IPv6 functionality on the 1039 disabled interfaces after boot, first you need to clear the flag by 1040 using ifconfig(8) like: 1041 1042 ifconfig em0 inet6 -ifdisabled 1043 1044 If YES, the default address selection policy is set as 1045 IPv6-preferred. 1046 1047 The default value of $ipv6_prefer is NO. 1048 1049 4. If your system need to receive Router Advertisement messages, 1050 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 1051 scripts automatically invoke rtsol(8) when the interface becomes 1052 UP. The Router Advertisement messages are used for SLAAC 1053 (State-Less Address AutoConfiguration). 1054 105520090922: 1056 802.11s D3.03 support was committed. This is incompatible with the 1057 previous code, which was based on D3.0. 1058 105920090912: 1060 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 1061 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 1062 control whether accepting Router Advertisement messages or not. 1063 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 1064 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 1065 The ifconfig(8) utility now supports these flags. 1066 106720090910: 1068 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 1069 mount(8) and -a option for df(1) to see them. 1070 107120090825: 1072 The old tunable hw.bus.devctl_disable has been superseded by 1073 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 1074 replaced by hw.bus.devctl_queue=0. The default for this new tunable 1075 is 1000. 1076 107720090813: 1078 Remove the option STOP_NMI. The default action is now to use NMI only 1079 for KDB via the newly introduced function stop_cpus_hard() and 1080 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 1081 108220090803: 1083 The stable/8 branch created in subversion. This corresponds to the 1084 RELENG_8 branch in CVS. 1085 108620090719: 1087 Bump the shared library version numbers for all libraries that do not 1088 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 1089 __FreeBSD_version to 800105. 1090 109120090714: 1092 Due to changes in the implementation of virtual network stack support, 1093 all network-related kernel modules must be recompiled. As this change 1094 breaks the ABI, bump __FreeBSD_version to 800104. 1095 109620090713: 1097 The TOE interface to the TCP syncache has been modified to remove 1098 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 1099 The cxgb driver is the only TOE consumer affected by this change, and 1100 needs to be recompiled along with the kernel. As this change breaks 1101 the ABI, bump __FreeBSD_version to 800103. 1102 110320090712: 1104 Padding has been added to struct tcpcb, sackhint and tcpstat in 1105 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 1106 maintaining the ABI. However, this change breaks the ABI, so bump 1107 __FreeBSD_version to 800102. User space tools that rely on the size of 1108 any of these structs (e.g. sockstat) need to be recompiled. 1109 111020090630: 1111 The NFS_LEGACYRPC option has been removed along with the old kernel 1112 RPC implementation that this option selected. Kernel configurations 1113 may need to be adjusted. 1114 111520090629: 1116 The network interface device nodes at /dev/net/<interface> have been 1117 removed. All ioctl operations can be performed the normal way using 1118 routing sockets. The kqueue functionality can generally be replaced 1119 with routing sockets. 1120 112120090628: 1122 The documentation from the FreeBSD Documentation Project (Handbook, 1123 FAQ, etc.) is now installed via packages by sysinstall(8) and under 1124 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 1125 112620090624: 1127 The ABI of various structures related to the SYSV IPC API have been 1128 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 1129 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 1130 800100. 1131 113220090622: 1133 Layout of struct vnet has changed as routing related variables were 1134 moved to their own Vimage module. Modules need to be recompiled. Bump 1135 __FreeBSD_version to 800099. 1136 113720090619: 1138 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 1139 respectively. As long as no more than 16 groups per process are used, 1140 no changes should be visible. When more than 16 groups are used, old 1141 binaries may fail if they call getgroups() or getgrouplist() with 1142 statically sized storage. Recompiling will work around this, but 1143 applications should be modified to use dynamically allocated storage 1144 for group arrays as POSIX.1-2008 does not cap an implementation's 1145 number of supported groups at NGROUPS_MAX+1 as previous versions did. 1146 1147 NFS and portalfs mounts may also be affected as the list of groups is 1148 truncated to 16. Users of NFS who use more than 16 groups, should 1149 take care that negative group permissions are not used on the exported 1150 file systems as they will not be reliable unless a GSSAPI based 1151 authentication method is used. 1152 115320090616: 1154 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 1155 option compiles in the support for adaptive spinning for lockmgrs 1156 which want to enable it. The lockinit() function now accepts the flag 1157 LK_ADAPTIVE in order to make the lock object subject to adaptive 1158 spinning when both held in write and read mode. 1159 116020090613: 1161 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 1162 changed. User applications that use this ioctl need to be rebuilt. 1163 116420090611: 1165 The layout of struct thread has changed. Kernel and modules need to 1166 be rebuilt. 1167 116820090608: 1169 The layout of structs ifnet, domain, protosw and vnet_net has changed. 1170 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 1171 117220090602: 1173 window(1) has been removed from the base system. It can now be 1174 installed from ports. The port is called misc/window. 1175 117620090601: 1177 The way we are storing and accessing `routing table' entries has 1178 changed. Programs reading the FIB, like netstat, need to be 1179 re-compiled. 1180 118120090601: 1182 A new netisr implementation has been added for FreeBSD 8. Network 1183 file system modules, such as igmp, ipdivert, and others, should be 1184 rebuilt. 1185 Bump __FreeBSD_version to 800096. 1186 118720090530: 1188 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 1189 more valid. 1190 119120090530: 1192 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 1193 Bump __FreeBSD_version to 800094. 1194 119520090529: 1196 Add mnt_xflag field to 'struct mount'. File system modules need to be 1197 rebuilt. 1198 Bump __FreeBSD_version to 800093. 1199 120020090528: 1201 The compiling option ADAPTIVE_SX has been retired while it has been 1202 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1203 The KPI for sx_init_flags() changes as accepting flags: 1204 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1205 been introduced in order to handle the reversed logic. 1206 Bump __FreeBSD_version to 800092. 1207 120820090527: 1209 Add support for hierarchical jails. Remove global securelevel. 1210 Bump __FreeBSD_version to 800091. 1211 121220090523: 1213 The layout of struct vnet_net has changed, therefore modules 1214 need to be rebuilt. 1215 Bump __FreeBSD_version to 800090. 1216 121720090523: 1218 The newly imported zic(8) produces a new format in the output. Please 1219 run tzsetup(8) to install the newly created data to /etc/localtime. 1220 122120090520: 1222 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1223 hw.usb.* and is now consistent again with previous releases. 1224 122520090520: 1226 802.11 monitor mode support was revised and driver api's were changed. 1227 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1228 of DLT_IEEE802_11. No user-visible data structures were changed but 1229 applications that use DLT_IEEE802_11 may require changes. 1230 Bump __FreeBSD_version to 800088. 1231 123220090430: 1233 The layout of the following structs has changed: sysctl_oid, 1234 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1235 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1236 panics may be experienced. World rebuild is required for 1237 correctly checking networking state from userland. 1238 Bump __FreeBSD_version to 800085. 1239 124020090429: 1241 MLDv2 and Source-Specific Multicast (SSM) have been merged 1242 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1243 The implementation of SSM within FreeBSD's IPv6 stack closely 1244 follows the IPv4 implementation. 1245 1246 For kernel developers: 1247 1248 * The most important changes are that the ip6_output() and 1249 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1250 and this lock has been downgraded to a non-recursive mutex. 1251 1252 * As with the changes to the IPv4 stack to support SSM, filtering 1253 of inbound multicast traffic must now be performed by transport 1254 protocols within the IPv6 stack. This does not apply to TCP and 1255 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1256 1257 * The KPIs used by IPv6 multicast are similar to those used by 1258 the IPv4 stack, with the following differences: 1259 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1260 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1261 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1262 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1263 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1264 for MLDv1 have an additional 'timer' argument which is used to 1265 jitter the initial membership report for the solicited-node 1266 multicast membership on-link. 1267 * This is not strictly needed for MLDv2, which already jitters 1268 its report transmissions. However, the 'timer' argument is 1269 preserved in case MLDv1 is active on the interface. 1270 1271 * The KAME linked-list based IPv6 membership implementation has 1272 been refactored to use a vector similar to that used by the IPv4 1273 stack. 1274 Code which maintains a list of its own multicast memberships 1275 internally, e.g. carp, has been updated to reflect the new 1276 semantics. 1277 1278 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1279 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1280 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1281 implementation constraint which needs to be addressed in HEAD. 1282 1283 For application developers: 1284 1285 * The changes are broadly similar to those made for the IPv4 1286 stack. 1287 1288 * The use of IPv4 and IPv6 multicast socket options on the same 1289 socket, using mapped addresses, HAS NOT been tested or supported. 1290 1291 * There are a number of issues with the implementation of various 1292 IPv6 multicast APIs which need to be resolved in the API surface 1293 before the implementation is fully compatible with KAME userland 1294 use, and these are mostly to do with interface index treatment. 1295 1296 * The literature available discusses the use of either the delta / ASM 1297 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1298 using setsourcefilter(3)/getsourcefilter(3). For more information 1299 please refer to RFC 3768, 'Socket Interface Extensions for 1300 Multicast Source Filters'. 1301 1302 * Applications which use the published RFC 3678 APIs should be fine. 1303 1304 For systems administrators: 1305 1306 * The mtest(8) utility has been refactored to support IPv6, in 1307 addition to IPv4. Interface addresses are no longer accepted 1308 as arguments, their names must be used instead. The utility 1309 will map the interface name to its first IPv4 address as 1310 returned by getifaddrs(3). 1311 1312 * The ifmcstat(8) utility has also been updated to print the MLDv2 1313 endpoint state and source filter lists via sysctl(3). 1314 1315 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1316 loopback of IPv6 multicast datagrams by default; it defaults to 1 1317 to preserve the existing behaviour. Disabling multicast loopback is 1318 recommended for optimal system performance. 1319 1320 * The IPv6 MROUTING code has been changed to examine this sysctl 1321 instead of attempting to perform a group lookup before looping 1322 back forwarded datagrams. 1323 1324 Bump __FreeBSD_version to 800084. 1325 132620090422: 1327 Implement low-level Bluetooth HCI API. 1328 Bump __FreeBSD_version to 800083. 1329 133020090419: 1331 The layout of struct malloc_type, used by modules to register new 1332 memory allocation types, has changed. Most modules will need to 1333 be rebuilt or panics may be experienced. 1334 Bump __FreeBSD_version to 800081. 1335 133620090415: 1337 Anticipate overflowing inp_flags - add inp_flags2. 1338 This changes most offsets in inpcb, so checking v4 connection 1339 state will require a world rebuild. 1340 Bump __FreeBSD_version to 800080. 1341 134220090415: 1343 Add an llentry to struct route and struct route_in6. Modules 1344 embedding a struct route will need to be recompiled. 1345 Bump __FreeBSD_version to 800079. 1346 134720090414: 1348 The size of rt_metrics_lite and by extension rtentry has changed. 1349 Networking administration apps will need to be recompiled. 1350 The route command now supports show as an alias for get, weighting 1351 of routes, sticky and nostick flags to alter the behavior of stateful 1352 load balancing. 1353 Bump __FreeBSD_version to 800078. 1354 135520090408: 1356 Do not use Giant for kbdmux(4) locking. This is wrong and 1357 apparently causing more problems than it solves. This will 1358 re-open the issue where interrupt handlers may race with 1359 kbdmux(4) in polling mode. Typical symptoms include (but 1360 not limited to) duplicated and/or missing characters when 1361 low level console functions (such as gets) are used while 1362 interrupts are enabled (for example geli password prompt, 1363 mountroot prompt etc.). Disabling kbdmux(4) may help. 1364 136520090407: 1366 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1367 kernel modules referencing any of the above need to be recompiled. 1368 Bump __FreeBSD_version to 800075. 1369 137020090320: 1371 GEOM_PART has become the default partition slicer for storage devices, 1372 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1373 introduces some changes: 1374 1375 MSDOS/EBR: the devices created from MSDOS extended partition entries 1376 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1377 to devices with offset-based names. fstabs may need to be modified. 1378 1379 BSD: the "geometry does not match label" warning is harmless in most 1380 cases but it points to problems in file system misalignment with 1381 disk geometry. The "c" partition is now implicit, covers the whole 1382 top-level drive and cannot be (mis)used by users. 1383 1384 General: Kernel dumps are now not allowed to be written to devices 1385 whose partition types indicate they are meant to be used for file 1386 systems (or, in case of MSDOS partitions, as something else than 1387 the "386BSD" type). 1388 1389 Most of these changes date approximately from 200812. 1390 139120090319: 1392 The uscanner(4) driver has been removed from the kernel. This follows 1393 Linux removing theirs in 2.6 and making libusb the default interface 1394 (supported by sane). 1395 139620090319: 1397 The multicast forwarding code has been cleaned up. netstat(1) 1398 only relies on KVM now for printing bandwidth upcall meters. 1399 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1400 ip6_mroute_mod respectively. The config(5) options for statically 1401 compiling this code remain the same, i.e. 'options MROUTING'. 1402 140320090315: 1404 Support for the IFF_NEEDSGIANT network interface flag has been 1405 removed, which means that non-MPSAFE network device drivers are no 1406 longer supported. In particular, if_ar, if_sr, and network device 1407 drivers from the old (legacy) USB stack can no longer be built or 1408 used. 1409 141020090313: 1411 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1412 a bunch of new language catalog files have also been added. 1413 This means that some common libc messages are now localized and 1414 they depend on the LC_MESSAGES environmental variable. 1415 141620090313: 1417 The k8temp(4) driver has been renamed to amdtemp(4) since 1418 support for Family 10 and Family 11 CPU families was added. 1419 142020090309: 1421 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1422 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1423 1424 For kernel developers, the most important changes are that the 1425 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1426 and this lock has been downgraded to a non-recursive mutex. 1427 1428 Transport protocols (UDP, Raw IP) are now responsible for filtering 1429 inbound multicast traffic according to group membership and source 1430 filters. The imo_multicast_filter() KPI exists for this purpose. 1431 Transports which do not use multicast (SCTP, TCP) already reject 1432 multicast by default. Forwarding and receive performance may improve 1433 as a mutex acquisition is no longer needed in the ip_input() 1434 low-level input path. in_addmulti() and in_delmulti() are shimmed 1435 to new KPIs which exist to support SSM in-kernel. 1436 1437 For application developers, it is recommended that loopback of 1438 multicast datagrams be disabled for best performance, as this 1439 will still cause the lock to be taken for each looped-back 1440 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1441 be tuned to 0 to disable loopback by default; it defaults to 1 1442 to preserve the existing behaviour. 1443 1444 For systems administrators, to obtain best performance with 1445 multicast reception and multiple groups, it is always recommended 1446 that a card with a suitably precise hash filter is used. Hash 1447 collisions will still result in the lock being taken within the 1448 transport protocol input path to check group membership. 1449 1450 If deploying FreeBSD in an environment with IGMP snooping switches, 1451 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1452 enabled; this forces 224.0.0.0/24 group membership to be announced 1453 via IGMP. 1454 1455 The size of 'struct igmpstat' has changed; netstat needs to be 1456 recompiled to reflect this. 1457 Bump __FreeBSD_version to 800070. 1458 145920090309: 1460 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1461 updated to use it. This requires a buildworld/installworld in order to 1462 update the library and dependencies (usbconfig, etc). Its advisable to 1463 rebuild all ports which uses libusb. More specific directions are given 1464 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1465 libusb are no longer required and can be removed. 1466 146720090302: 1468 A workaround is committed to allow the creation of System V shared 1469 memory segment of size > 2 GB on the 64-bit architectures. 1470 Due to a limitation of the existing ABI, the shm_segsz member 1471 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1472 wrong for large segments. Note that limits must be explicitly 1473 raised to allow such segments to be created. 1474 147520090301: 1476 The layout of struct ifnet has changed, requiring a rebuild of all 1477 network device driver modules. 1478 147920090227: 1480 The /dev handling for the new USB stack has changed, a 1481 buildworld/installworld is required for libusb20. 1482 148320090223: 1484 The new USB2 stack has now been permanently moved in and all kernel and 1485 module names reverted to their previous values (eg, usb, ehci, ohci, 1486 ums, ...). The old usb stack can be compiled in by prefixing the name 1487 with the letter 'o', the old usb modules have been removed. 1488 Updating entry 20090216 for xorg and 20090215 for libmap may still 1489 apply. 1490 149120090217: 1492 The rc.conf(5) option if_up_delay has been renamed to 1493 defaultroute_delay to better reflect its purpose. If you have 1494 customized this setting in /etc/rc.conf you need to update it to 1495 use the new name. 1496 149720090216: 1498 xorg 7.4 wants to configure its input devices via hald which does not 1499 yet work with USB2. If the keyboard/mouse does not work in xorg then 1500 add 1501 Option "AllowEmptyInput" "off" 1502 to your ServerLayout section. This will cause X to use the configured 1503 kbd and mouse sections from your xorg.conf. 1504 150520090215: 1506 The GENERIC kernels for all architectures now default to the new USB2 1507 stack. No kernel config options or code have been removed so if a 1508 problem arises please report it and optionally revert to the old USB 1509 stack. If you are loading USB kernel modules or have a custom kernel 1510 that includes GENERIC then ensure that usb names are also changed over, 1511 eg uftdi -> usb2_serial_ftdi. 1512 1513 Older programs linked against the ports libusb 0.1 need to be 1514 redirected to the new stack's libusb20. /etc/libmap.conf can 1515 be used for this: 1516 # Map old usb library to new one for usb2 stack 1517 libusb-0.1.so.8 libusb20.so.1 1518 151920090209: 1520 All USB ethernet devices now attach as interfaces under the name ueN 1521 (eg. ue0). This is to provide a predictable name as vendors often 1522 change usb chipsets in a product without notice. 1523 152420090203: 1525 The ichsmb(4) driver has been changed to require SMBus slave 1526 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1527 All of the other SMBus controller drivers require left-justified 1528 slave addresses, so this change makes all the drivers provide the 1529 same interface. 1530 153120090201: 1532 INET6 statistics (struct ip6stat) was updated. 1533 netstat(1) needs to be recompiled. 1534 153520090119: 1536 NTFS has been removed from GENERIC kernel on amd64 to match 1537 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1538 will load ntfs.ko module automatically when NTFS support is 1539 actually needed, unless ntfs.ko is not installed or security 1540 level prohibits loading kernel modules. If either is the case, 1541 "options NTFS" has to be added into kernel config. 1542 154320090115: 1544 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1545 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1546 800061. User space tools that rely on the size of struct tcpcb in 1547 tcp_var.h (e.g. sockstat) need to be recompiled. 1548 154920081225: 1550 ng_tty(4) module updated to match the new TTY subsystem. 1551 Due to API change, user-level applications must be updated. 1552 New API support added to mpd5 CVS and expected to be present 1553 in next mpd5.3 release. 1554 155520081219: 1556 With __FreeBSD_version 800060 the makefs tool is part of 1557 the base system (it was a port). 1558 155920081216: 1560 The afdata and ifnet locks have been changed from mutexes to 1561 rwlocks, network modules will need to be re-compiled. 1562 156320081214: 1564 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1565 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1566 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1567 architecture and 40 bytes on 64-bit architecture. The userland 1568 applications "arp" and "ndp" have been updated accordingly. 1569 The output from "netstat -r" shows only routing entries and 1570 none of the L2 information. 1571 157220081130: 1573 __FreeBSD_version 800057 marks the switchover from the 1574 binary ath hal to source code. Users must add the line: 1575 1576 options AH_SUPPORT_AR5416 1577 1578 to their kernel config files when specifying: 1579 1580 device ath_hal 1581 1582 The ath_hal module no longer exists; the code is now compiled 1583 together with the driver in the ath module. It is now 1584 possible to tailor chip support (i.e. reduce the set of chips 1585 and thereby the code size); consult ath_hal(4) for details. 1586 158720081121: 1588 __FreeBSD_version 800054 adds memory barriers to 1589 <machine/atomic.h>, new interfaces to ifnet to facilitate 1590 multiple hardware transmit queues for cards that support 1591 them, and a lock-less ring-buffer implementation to 1592 enable drivers to more efficiently manage queueing of 1593 packets. 1594 159520081117: 1596 A new version of ZFS (version 13) has been merged to -HEAD. 1597 This version has zpool attribute "listsnapshots" off by 1598 default, which means "zfs list" does not show snapshots, 1599 and is the same as Solaris behavior. 1600 160120081028: 1602 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1603 160420081009: 1605 The uhci, ohci, ehci and slhci USB Host controller drivers have 1606 been put into separate modules. If you load the usb module 1607 separately through loader.conf you will need to load the 1608 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1609 controller add the following to loader.conf: 1610 1611 uhci_load="YES" 1612 ehci_load="YES" 1613 161420081009: 1615 The ABI used by the PMC toolset has changed. Please keep 1616 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1617 sync. 1618 161920081009: 1620 atapci kernel module now includes only generic PCI ATA 1621 driver. AHCI driver moved to ataahci kernel module. 1622 All vendor-specific code moved into separate kernel modules: 1623 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1624 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1625 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1626 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1627 162820080820: 1629 The TTY subsystem of the kernel has been replaced by a new 1630 implementation, which provides better scalability and an 1631 improved driver model. Most common drivers have been migrated to 1632 the new TTY subsystem, while others have not. The following 1633 drivers have not yet been ported to the new TTY layer: 1634 1635 PCI/ISA: 1636 cy, digi, rc, rp, sio 1637 1638 USB: 1639 ubser, ucycom 1640 1641 Line disciplines: 1642 ng_h4, ng_tty, ppp, sl, snp 1643 1644 Adding these drivers to your kernel configuration file shall 1645 cause compilation to fail. 1646 164720080818: 1648 ntpd has been upgraded to 4.2.4p5. 1649 165020080801: 1651 OpenSSH has been upgraded to 5.1p1. 1652 1653 For many years, FreeBSD's version of OpenSSH preferred DSA 1654 over RSA for host and user authentication keys. With this 1655 upgrade, we've switched to the vendor's default of RSA over 1656 DSA. This may cause upgraded clients to warn about unknown 1657 host keys even for previously known hosts. Users should 1658 follow the usual procedure for verifying host keys before 1659 accepting the RSA key. 1660 1661 This can be circumvented by setting the "HostKeyAlgorithms" 1662 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1663 command line. 1664 1665 Please note that the sequence of keys offered for 1666 authentication has been changed as well. You may want to 1667 specify IdentityFile in a different order to revert this 1668 behavior. 1669 167020080713: 1671 The sio(4) driver has been removed from the i386 and amd64 1672 kernel configuration files. This means uart(4) is now the 1673 default serial port driver on those platforms as well. 1674 1675 To prevent collisions with the sio(4) driver, the uart(4) driver 1676 uses different names for its device nodes. This means the 1677 onboard serial port will now most likely be called "ttyu0" 1678 instead of "ttyd0". You may need to reconfigure applications to 1679 use the new device names. 1680 1681 When using the serial port as a boot console, be sure to update 1682 /boot/device.hints and /etc/ttys before booting the new kernel. 1683 If you forget to do so, you can still manually specify the hints 1684 at the loader prompt: 1685 1686 set hint.uart.0.at="isa" 1687 set hint.uart.0.port="0x3F8" 1688 set hint.uart.0.flags="0x10" 1689 set hint.uart.0.irq="4" 1690 boot -s 1691 169220080609: 1693 The gpt(8) utility has been removed. Use gpart(8) to partition 1694 disks instead. 1695 169620080603: 1697 The version that Linuxulator emulates was changed from 2.4.2 1698 to 2.6.16. If you experience any problems with Linux binaries 1699 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1700 if it fixes the problem contact emulation mailing list. 1701 170220080525: 1703 ISDN4BSD (I4B) was removed from the src tree. You may need to 1704 update a your kernel configuration and remove relevant entries. 1705 170620080509: 1707 I have checked in code to support multiple routing tables. 1708 See the man pages setfib(1) and setfib(2). 1709 This is a hopefully backwards compatible version, 1710 but to make use of it you need to compile your kernel 1711 with options ROUTETABLES=2 (or more up to 16). 1712 171320080420: 1714 The 802.11 wireless support was redone to enable multi-bss 1715 operation on devices that are capable. The underlying device 1716 is no longer used directly but instead wlanX devices are 1717 cloned with ifconfig. This requires changes to rc.conf files. 1718 For example, change: 1719 ifconfig_ath0="WPA DHCP" 1720 to 1721 wlans_ath0=wlan0 1722 ifconfig_wlan0="WPA DHCP" 1723 see rc.conf(5) for more details. In addition, mergemaster of 1724 /etc/rc.d is highly recommended. Simultaneous update of userland 1725 and kernel wouldn't hurt either. 1726 1727 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1728 modules were merged into the base wlan module. All references 1729 to these modules (e.g. in kernel config files) must be removed. 1730 173120080408: 1732 psm(4) has gained write(2) support in native operation level. 1733 Arbitrary commands can be written to /dev/psm%d and status can 1734 be read back from it. Therefore, an application is responsible 1735 for status validation and error recovery. It is a no-op in 1736 other operation levels. 1737 173820080312: 1739 Support for KSE threading has been removed from the kernel. To 1740 run legacy applications linked against KSE libmap.conf may 1741 be used. The following libmap.conf may be used to ensure 1742 compatibility with any prior release: 1743 1744 libpthread.so.1 libthr.so.1 1745 libpthread.so.2 libthr.so.2 1746 libkse.so.3 libthr.so.3 1747 174820080301: 1749 The layout of struct vmspace has changed. This affects libkvm 1750 and any executables that link against libkvm and use the 1751 kvm_getprocs() function. In particular, but not exclusively, 1752 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1753 The effects are minimal, but it's advisable to upgrade world 1754 nonetheless. 1755 175620080229: 1757 The latest em driver no longer has support in it for the 1758 82575 adapter, this is now moved to the igb driver. The 1759 split was done to make new features that are incompatible 1760 with older hardware easier to do. 1761 176220080220: 1763 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1764 likewise the kernel option is now GEOM_LINUX_LVM. 1765 176620080211: 1767 The default NFS mount mode has changed from UDP to TCP for 1768 increased reliability. If you rely on (insecurely) NFS 1769 mounting across a firewall you may need to update your 1770 firewall rules. 1771 177220080208: 1773 Belatedly note the addition of m_collapse for compacting 1774 mbuf chains. 1775 177620080126: 1777 The fts(3) structures have been changed to use adequate 1778 integer types for their members and so to be able to cope 1779 with huge file trees. The old fts(3) ABI is preserved 1780 through symbol versioning in libc, so third-party binaries 1781 using fts(3) should still work, although they will not take 1782 advantage of the extended types. At the same time, some 1783 third-party software might fail to build after this change 1784 due to unportable assumptions made in its source code about 1785 fts(3) structure members. Such software should be fixed 1786 by its vendor or, in the worst case, in the ports tree. 1787 FreeBSD_version 800015 marks this change for the unlikely 1788 case that a portable fix is impossible. 1789 179020080123: 1791 To upgrade to -current after this date, you must be running 1792 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1793 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1794 179520071128: 1796 The ADAPTIVE_GIANT kernel option has been retired because its 1797 functionality is the default now. 1798 179920071118: 1800 The AT keyboard emulation of sunkbd(4) has been turned on 1801 by default. In order to make the special symbols of the Sun 1802 keyboards driven by sunkbd(4) work under X these now have 1803 to be configured the same way as Sun USB keyboards driven 1804 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1805 1806 Option "XkbLayout" "us" 1807 Option "XkbRules" "xorg" 1808 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1809 181020071024: 1811 It has been decided that it is desirable to provide ABI 1812 backwards compatibility to the FreeBSD 4/5/6 versions of the 1813 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1814 broken with the introduction of PCI domain support (see the 1815 20070930 entry). Unfortunately, this required the ABI of 1816 PCIOCGETCONF to be broken again in order to be able to 1817 provide backwards compatibility to the old version of that 1818 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1819 again. As for prominent ports this affects neither pciutils 1820 nor xorg-server this time, the hal port needs to be rebuilt 1821 however. 1822 182320071020: 1824 The misnamed kthread_create() and friends have been renamed 1825 to kproc_create() etc. Many of the callers already 1826 used kproc_start().. 1827 I will return kthread_create() and friends in a while 1828 with implementations that actually create threads, not procs. 1829 Renaming corresponds with version 800002. 1830 183120071010: 1832 RELENG_7 branched. 1833 1834COMMON ITEMS: 1835 1836 General Notes 1837 ------------- 1838 Avoid using make -j when upgrading. While generally safe, there are 1839 sometimes problems using -j to upgrade. If your upgrade fails with 1840 -j, please try again without -j. From time to time in the past there 1841 have been problems using -j with buildworld and/or installworld. This 1842 is especially true when upgrading between "distant" versions (eg one 1843 that cross a major release boundary or several minor releases, or when 1844 several months have passed on the -current branch). 1845 1846 Sometimes, obscure build problems are the result of environment 1847 poisoning. This can happen because the make utility reads its 1848 environment when searching for values for global variables. To run 1849 your build attempts in an "environmental clean room", prefix all make 1850 commands with 'env -i '. See the env(1) manual page for more details. 1851 1852 When upgrading from one major version to another it is generally best 1853 to upgrade to the latest code in the currently installed branch first, 1854 then do an upgrade to the new branch. This is the best-tested upgrade 1855 path, and has the highest probability of being successful. Please try 1856 this approach before reporting problems with a major version upgrade. 1857 1858 When upgrading a live system, having a root shell around before 1859 installing anything can help undo problems. Not having a root shell 1860 around can lead to problems if pam has changed too much from your 1861 starting point to allow continued authentication after the upgrade. 1862 1863 ZFS notes 1864 --------- 1865 When upgrading the boot ZFS pool to a new version, always follow 1866 these two steps: 1867 1868 1.) recompile and reinstall the ZFS boot loader and boot block 1869 (this is part of "make buildworld" and "make installworld") 1870 1871 2.) update the ZFS boot block on your boot drive 1872 1873 The following example updates the ZFS boot block on the first 1874 partition (freebsd-boot) of a GPT partitioned drive ad0: 1875 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1876 1877 Non-boot pools do not need these updates. 1878 1879 To build a kernel 1880 ----------------- 1881 If you are updating from a prior version of FreeBSD (even one just 1882 a few days old), you should follow this procedure. It is the most 1883 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1884 1885 make kernel-toolchain 1886 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1887 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1888 1889 To test a kernel once 1890 --------------------- 1891 If you just want to boot a kernel once (because you are not sure 1892 if it works, or if you want to boot a known bad kernel to provide 1893 debugging information) run 1894 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1895 nextboot -k testkernel 1896 1897 To just build a kernel when you know that it won't mess you up 1898 -------------------------------------------------------------- 1899 This assumes you are already running a CURRENT system. Replace 1900 ${arch} with the architecture of your machine (e.g. "i386", 1901 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1902 1903 cd src/sys/${arch}/conf 1904 config KERNEL_NAME_HERE 1905 cd ../compile/KERNEL_NAME_HERE 1906 make depend 1907 make 1908 make install 1909 1910 If this fails, go to the "To build a kernel" section. 1911 1912 To rebuild everything and install it on the current system. 1913 ----------------------------------------------------------- 1914 # Note: sometimes if you are running current you gotta do more than 1915 # is listed here if you are upgrading from a really old current. 1916 1917 <make sure you have good level 0 dumps> 1918 make buildworld 1919 make kernel KERNCONF=YOUR_KERNEL_HERE 1920 [1] 1921 <reboot in single user> [3] 1922 mergemaster -p [5] 1923 make installworld 1924 mergemaster -i [4] 1925 make delete-old [6] 1926 <reboot> 1927 1928 To cross-install current onto a separate partition 1929 -------------------------------------------------- 1930 # In this approach we use a separate partition to hold 1931 # current's root, 'usr', and 'var' directories. A partition 1932 # holding "/", "/usr" and "/var" should be about 2GB in 1933 # size. 1934 1935 <make sure you have good level 0 dumps> 1936 <boot into -stable> 1937 make buildworld 1938 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1939 <maybe newfs current's root partition> 1940 <mount current's root partition on directory ${CURRENT_ROOT}> 1941 make installworld DESTDIR=${CURRENT_ROOT} 1942 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1943 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1944 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1945 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1946 <reboot into current> 1947 <do a "native" rebuild/install as described in the previous section> 1948 <maybe install compatibility libraries from ports/misc/compat*> 1949 <reboot> 1950 1951 1952 To upgrade in-place from stable to current 1953 ---------------------------------------------- 1954 <make sure you have good level 0 dumps> 1955 make buildworld [9] 1956 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1957 [1] 1958 <reboot in single user> [3] 1959 mergemaster -p [5] 1960 make installworld 1961 mergemaster -i [4] 1962 make delete-old [6] 1963 <reboot> 1964 1965 Make sure that you've read the UPDATING file to understand the 1966 tweaks to various things you need. At this point in the life 1967 cycle of current, things change often and you are on your own 1968 to cope. The defaults can also change, so please read ALL of 1969 the UPDATING entries. 1970 1971 Also, if you are tracking -current, you must be subscribed to 1972 freebsd-current@freebsd.org. Make sure that before you update 1973 your sources that you have read and understood all the recent 1974 messages there. If in doubt, please track -stable which has 1975 much fewer pitfalls. 1976 1977 [1] If you have third party modules, such as vmware, you 1978 should disable them at this point so they don't crash your 1979 system on reboot. 1980 1981 [3] From the bootblocks, boot -s, and then do 1982 fsck -p 1983 mount -u / 1984 mount -a 1985 cd src 1986 adjkerntz -i # if CMOS is wall time 1987 Also, when doing a major release upgrade, it is required that 1988 you boot into single user mode to do the installworld. 1989 1990 [4] Note: This step is non-optional. Failure to do this step 1991 can result in a significant reduction in the functionality of the 1992 system. Attempting to do it by hand is not recommended and those 1993 that pursue this avenue should read this file carefully, as well 1994 as the archives of freebsd-current and freebsd-hackers mailing lists 1995 for potential gotchas. The -U option is also useful to consider. 1996 See mergemaster(8) for more information. 1997 1998 [5] Usually this step is a noop. However, from time to time 1999 you may need to do this if you get unknown user in the following 2000 step. It never hurts to do it all the time. You may need to 2001 install a new mergemaster (cd src/usr.sbin/mergemaster && make 2002 install) after the buildworld before this step if you last updated 2003 from current before 20130425 or from -stable before 20130430. 2004 2005 [6] This only deletes old files and directories. Old libraries 2006 can be deleted by "make delete-old-libs", but you have to make 2007 sure that no program is using those libraries anymore. 2008 2009 [8] In order to have a kernel that can run the 4.x binaries needed to 2010 do an installworld, you must include the COMPAT_FREEBSD4 option in 2011 your kernel. Failure to do so may leave you with a system that is 2012 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 2013 required to run the 5.x binaries on more recent kernels. And so on 2014 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 2015 2016 Make sure that you merge any new devices from GENERIC since the 2017 last time you updated your kernel config file. 2018 2019 [9] When checking out sources, you must include the -P flag to have 2020 cvs prune empty directories. 2021 2022 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 2023 "?=" instead of the "=" assignment operator, so that buildworld can 2024 override the CPUTYPE if it needs to. 2025 2026 MAKEOBJDIRPREFIX must be defined in an environment variable, and 2027 not on the command line, or in /etc/make.conf. buildworld will 2028 warn if it is improperly defined. 2029FORMAT: 2030 2031This file contains a list, in reverse chronological order, of major 2032breakages in tracking -current. It is not guaranteed to be a complete 2033list of such breakages, and only contains entries since October 10, 2007. 2034If you need to see UPDATING entries from before that date, you will need 2035to fetch an UPDATING file from an older FreeBSD release. 2036 2037Copyright information: 2038 2039Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 2040 2041Redistribution, publication, translation and use, with or without 2042modification, in full or in part, in any form or format of this 2043document are permitted without further permission from the author. 2044 2045THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 2046IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 2047WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2048DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 2049INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2050(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2051SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2052HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2053STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2054IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2055POSSIBILITY OF SUCH DAMAGE. 2056 2057Contact Warner Losh if you have any questions about your use of 2058this document. 2059 2060$FreeBSD: stable/10/UPDATING 261989 2014-02-16 19:38:17Z brueffer $ 2061