UPDATING revision 262720
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 2020140303: 21 OpenSSH will now ignore errors caused by kernel lacking of Capsicum 22 capability mode support. Please note that enabling the feature in 23 kernel is still highly recommended. 24 2520140227: 26 OpenSSH is now built with sandbox support, and will use sandbox as 27 the default privilege separation method. This requires Capsicum 28 capability mode support in kernel. 29 3020140216: 31 The nve(4) driver for NVIDIA nForce MCP Ethernet adapters has 32 been deprecated and will not be part of FreeBSD 11.0 and later 33 releases. If you use this driver, please consider switching to 34 the nfe(4) driver instead. 35 3620140120: 37 10.0-RELEASE. 38 3920131216: 40 The behavior of gss_pseudo_random() for the krb5 mechanism 41 has changed, for applications requesting a longer random string 42 than produced by the underlying enctype's pseudo-random() function. 43 In particular, the random string produced from a session key of 44 enctype aes256-cts-hmac-sha1-96 or aes256-cts-hmac-sha1-96 will 45 be different at the 17th octet and later, after this change. 46 The counter used in the PRF+ construction is now encoded as a 47 big-endian integer in accordance with RFC 4402. 48 __FreeBSD_version is bumped to 1000701. 49 5020131108: 51 The WITHOUT_ATF build knob has been removed and its functionality 52 has been subsumed into the more generic WITHOUT_TESTS. If you were 53 using the former to disable the build of the ATF libraries, you 54 should change your settings to use the latter. 55 5620131031: 57 The default version of mtree is nmtree which is obtained from 58 NetBSD. The output is generally the same, but may vary 59 slightly. If you found you need identical output adding 60 "-F freebsd9" to the command line should do the trick. For the 61 time being, the old mtree is available as fmtree. 62 6320131014: 64 libbsdyml has been renamed to libyaml and moved to /usr/lib/private. 65 This will break ports-mgmt/pkg. Rebuild the port, or upgrade to pkg 66 1.1.4_8 and verify bsdyml not linked in, before running "make 67 delete-old-libs": 68 # make -C /usr/ports/ports-mgmt/pkg build deinstall install clean 69 or 70 # pkg install pkg; ldd /usr/local/sbin/pkg | grep bsdyml 71 7220131010: 73 The rc.d/jail script has been updated to support jail(8) 74 configuration file. The "jail_<jname>_*" rc.conf(5) variables 75 for per-jail configuration are automatically converted to 76 /var/run/jail.<jname>.conf before the jail(8) utility is invoked. 77 This is transparently backward compatible. See below about some 78 incompatibilities and rc.conf(5) manual page for more details. 79 80 These variables are now deprecated in favor of jail(8) configuration 81 file. One can use "rc.d/jail config <jname>" command to generate 82 a jail(8) configuration file in /var/run/jail.<jname>.conf without 83 running the jail(8) utility. The default pathname of the 84 configuration file is /etc/jail.conf and can be specified by 85 using $jail_conf or $jail_<jname>_conf variables. 86 87 Please note that jail_devfs_ruleset accepts an integer at 88 this moment. Please consider to rewrite the ruleset name 89 with an integer. 90 9120130930: 92 BIND has been removed from the base system. If all you need 93 is a local resolver, simply enable and start the local_unbound 94 service instead. Otherwise, several versions of BIND are 95 available in the ports tree. The dns/bind99 port is one example. 96 97 With this change, nslookup(1) and dig(1) are no longer in the base 98 system. Users should instead use host(1) and drill(1) which are 99 in the base system. Alternatively, nslookup and dig can 100 be obtained by installing the dns/bind-tools port. 101 10220130916: 103 With the addition of unbound(8), a new unbound user is now 104 required during installworld. "mergemaster -p" can be used to 105 add the user prior to installworld, as documented in the handbook. 106 10720130911: 108 OpenSSH is now built with DNSSEC support, and will by default 109 silently trust signed SSHFP records. This can be controlled with 110 the VerifyHostKeyDNS client configuration setting. DNSSEC support 111 can be disabled entirely with the WITHOUT_LDNS option in src.conf. 112 11320130906: 114 The GNU Compiler Collection and C++ standard library (libstdc++) 115 are no longer built by default on platforms where clang is the system 116 compiler. You can enable them with the WITH_GCC and WITH_GNUCXX 117 options in src.conf. 118 11920130905: 120 The PROCDESC kernel option is now part of the GENERIC kernel 121 configuration and is required for the rwhod(8) to work. 122 If you are using custom kernel configuration, you should include 123 'options PROCDESC'. 124 12520130905: 126 The API and ABI related to the Capsicum framework was modified 127 in backward incompatible way. The userland libraries and programs 128 have to be recompiled to work with the new kernel. This includes the 129 following libraries and programs, but the whole buildworld is 130 advised: libc, libprocstat, dhclient, tcpdump, hastd, hastctl, 131 kdump, procstat, rwho, rwhod, uniq. 132 13320130903: 134 AES-NI intrinsic support has been added to gcc. The AES-NI module 135 has been updated to use this support. A new gcc is required to build 136 the aesni module on both i386 and amd64. 137 13820130821: 139 The PADLOCK_RNG and RDRAND_RNG kernel options are now devices. 140 Thus "device padlock_rng" and "device rdrand_rng" should be 141 used instead of "options PADLOCK_RNG" & "options RDRAND_RNG". 142 14320130813: 144 WITH_ICONV has been split into two feature sets. WITH_ICONV now 145 enables just the iconv* functionality and is now on by default. 146 WITH_LIBICONV_COMPAT enables the libiconv api and link time 147 compatability. Set WITHOUT_ICONV to build the old way. 148 If you have been using WITH_ICONV before, you will very likely 149 need to turn on WITH_LIBICONV_COMPAT. 150 15120130806: 152 INVARIANTS option now enables DEBUG for code with OpenSolaris and 153 Illumos origin, including ZFS. If you have INVARIANTS in your 154 kernel configuration, then there is no need to set DEBUG or ZFS_DEBUG 155 explicitly. 156 DEBUG used to enable witness(9) tracking of OpenSolaris (mostly ZFS) 157 locks if WITNESS option was set. Because that generated a lot of 158 witness(9) reports and all of them were believed to be false 159 positives, this is no longer done. New option OPENSOLARIS_WITNESS 160 can be used to achieve the previous behavior. 161 16220130806: 163 Timer values in IPv6 data structures now use time_uptime instead 164 of time_second. Although this is not a user-visible functional 165 change, userland utilities which directly use them---ndp(8), 166 rtadvd(8), and rtsold(8) in the base system---need to be updated 167 to r253970 or later. 168 16920130802: 170 find -delete can now delete the pathnames given as arguments, 171 instead of only files found below them or if the pathname did 172 not contain any slashes. Formerly, the following error message 173 would result: 174 175 find: -delete: <path>: relative path potentially not safe 176 177 Deleting the pathnames given as arguments can be prevented 178 without error messages using -mindepth 1 or by changing 179 directory and passing "." as argument to find. This works in the 180 old as well as the new version of find. 181 18220130726: 183 Behavior of devfs rules path matching has been changed. 184 Pattern is now always matched against fully qualified devfs 185 path and slash characters must be explicitly matched by 186 slashes in pattern (FNM_PATHNAME). Rulesets involving devfs 187 subdirectories must be reviewed. 188 18920130716: 190 The default ARM ABI has changed to the ARM EABI. The old ABI is 191 incompatible with the ARM EABI and all programs and modules will 192 need to be rebuilt to work with a new kernel. 193 194 To keep using the old ABI ensure the WITHOUT_ARM_EABI knob is set. 195 196 NOTE: Support for the old ABI will be removed in the future and 197 users are advised to upgrade. 198 19920130709: 200 pkg_install has been disconnected from the build if you really need it 201 you should add WITH_PKGTOOLS in your src.conf(5). 202 20320130709: 204 Most of network statistics structures were changed to be able 205 keep 64-bits counters. Thus all tools, that work with networking 206 statistics, must be rebuilt (netstat(1), bsnmpd(1), etc.) 207 20820130629: 209 Fix targets that run multiple make's to use && rather than ; 210 so that subsequent steps depend on success of previous. 211 212 NOTE: if building 'universe' with -j* on stable/8 or stable/9 213 it would be better to start the build using bmake, to avoid 214 overloading the machine. 215 21620130618: 217 Fix a bug that allowed a tracing process (e.g. gdb) to write 218 to a memory-mapped file in the traced process's address space 219 even if neither the traced process nor the tracing process had 220 write access to that file. 221 22220130615: 223 CVS has been removed from the base system. An exact copy 224 of the code is available from the devel/cvs port. 225 22620130613: 227 Some people report the following error after the switch to bmake: 228 229 make: illegal option -- J 230 usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] 231 ... 232 *** [buildworld] Error code 2 233 234 this likely due to an old instance of make in 235 ${MAKEPATH} (${MAKEOBJDIRPREFIX}${.CURDIR}/make.${MACHINE}) 236 which src/Makefile will use that blindly, if it exists, so if 237 you see the above error: 238 239 rm -rf `make -V MAKEPATH` 240 241 should resolve it. 242 24320130516: 244 Use bmake by default. 245 Whereas before one could choose to build with bmake via 246 -DWITH_BMAKE one must now use -DWITHOUT_BMAKE to use the old 247 make. The goal is to remove these knobs for 10-RELEASE. 248 249 It is worth noting that bmake (like gmake) treats the command 250 line as the unit of failure, rather than statements within the 251 command line. Thus '(cd some/where && dosomething)' is safer 252 than 'cd some/where; dosomething'. The '()' allows consistent 253 behavior in parallel build. 254 25520130429: 256 Fix a bug that allows NFS clients to issue READDIR on files. 257 25820130426: 259 The WITHOUT_IDEA option has been removed because 260 the IDEA patent expired. 261 26220130426: 263 The sysctl which controls TRIM support under ZFS has been renamed 264 from vfs.zfs.trim_disable -> vfs.zfs.trim.enabled and has been 265 enabled by default. 266 26720130425: 268 The mergemaster command now uses the default MAKEOBJDIRPREFIX 269 rather than creating it's own in the temporary directory in 270 order allow access to bootstrapped versions of tools such as 271 install and mtree. When upgrading from version of FreeBSD where 272 the install command does not support -l, you will need to 273 install a new mergemaster command if mergemaster -p is required. 274 This can be accomplished with the command (cd src/usr.sbin/mergemaster 275 && make install). 276 27720130404: 278 Legacy ATA stack, disabled and replaced by new CAM-based one since 279 FreeBSD 9.0, completely removed from the sources. Kernel modules 280 atadisk and atapi*, user-level tools atacontrol and burncd are 281 removed. Kernel option `options ATA_CAM` is now permanently enabled 282 and removed. 283 28420130319: 285 SOCK_CLOEXEC and SOCK_NONBLOCK flags have been added to socket(2) 286 and socketpair(2). Software, in particular Kerberos, may 287 automatically detect and use these during building. The resulting 288 binaries will not work on older kernels. 289 29020130308: 291 CTL_DISABLE has also been added to the sparc64 GENERIC (for further 292 information, see the respective 20130304 entry). 293 29420130304: 295 Recent commits to callout(9) changed the size of struct callout, 296 so the KBI is probably heavily disturbed. Also, some functions 297 in callout(9)/sleep(9)/sleepqueue(9)/condvar(9) KPIs were replaced 298 by macros. Every kernel module using it won't load, so rebuild 299 is requested. 300 301 The ctl device has been re-enabled in GENERIC for i386 and amd64, 302 but does not initialize by default (because of the new CTL_DISABLE 303 option) to save memory. To re-enable it, remove the CTL_DISABLE 304 option from the kernel config file or set kern.cam.ctl.disable=0 305 in /boot/loader.conf. 306 30720130301: 308 The ctl device has been disabled in GENERIC for i386 and amd64. 309 This was done due to the extra memory being allocated at system 310 initialisation time by the ctl driver which was only used if 311 a CAM target device was created. This makes a FreeBSD system 312 unusable on 128MB or less of RAM. 313 31420130208: 315 A new compression method (lz4) has been merged to -HEAD. Please 316 refer to zpool-features(7) for more information. 317 318 Please refer to the "ZFS notes" section of this file for information 319 on upgrading boot ZFS pools. 320 32120130129: 322 A BSD-licensed patch(1) variant has been added and is installed 323 as bsdpatch, being the GNU version the default patch. 324 To inverse the logic and use the BSD-licensed one as default, 325 while having the GNU version installed as gnupatch, rebuild 326 and install world with the WITH_BSD_PATCH knob set. 327 32820130121: 329 Due to the use of the new -l option to install(1) during build 330 and install, you must take care not to directly set the INSTALL 331 make variable in your /etc/make.conf, /etc/src.conf, or on the 332 command line. If you wish to use the -C flag for all installs 333 you may be able to add INSTALL+=-C to /etc/make.conf or 334 /etc/src.conf. 335 33620130118: 337 The install(1) option -M has changed meaning and now takes an 338 argument that is a file or path to append logs to. In the 339 unlikely event that -M was the last option on the command line 340 and the command line contained at least two files and a target 341 directory the first file will have logs appended to it. The -M 342 option served little practical purpose in the last decade so its 343 use is expected to be extremely rare. 344 34520121223: 346 After switching to Clang as the default compiler some users of ZFS 347 on i386 systems started to experience stack overflow kernel panics. 348 Please consider using 'options KSTACK_PAGES=4' in such configurations. 349 35020121222: 351 GEOM_LABEL now mangles label names read from file system metadata. 352 Mangling affect labels containing spaces, non-printable characters, 353 '%' or '"'. Device names in /etc/fstab and other places may need to 354 be updated. 355 35620121217: 357 By default, only the 10 most recent kernel dumps will be saved. To 358 restore the previous behaviour (no limit on the number of kernel dumps 359 stored in the dump directory) add the following line to /etc/rc.conf: 360 361 savecore_flags="" 362 36320121201: 364 With the addition of auditdistd(8), a new auditdistd user is now 365 required during installworld. "mergemaster -p" can be used to 366 add the user prior to installworld, as documented in the handbook. 367 36820121117: 369 The sin6_scope_id member variable in struct sockaddr_in6 is now 370 filled by the kernel before passing the structure to the userland via 371 sysctl or routing socket. This means the KAME-specific embedded scope 372 id in sin6_addr.s6_addr[2] is always cleared in userland application. 373 This behavior can be controlled by net.inet6.ip6.deembed_scopeid. 374 __FreeBSD_version is bumped to 1000025. 375 37620121105: 377 On i386 and amd64 systems WITH_CLANG_IS_CC is now the default. 378 This means that the world and kernel will be compiled with clang 379 and that clang will be installed as /usr/bin/cc, /usr/bin/c++, 380 and /usr/bin/cpp. To disable this behavior and revert to building 381 with gcc, compile with WITHOUT_CLANG_IS_CC. Really old versions 382 of current may need to bootstrap WITHOUT_CLANG first if the clang 383 build fails (its compatibility window doesn't extend to the 9 stable 384 branch point). 385 38620121102: 387 The IPFIREWALL_FORWARD kernel option has been removed. Its 388 functionality now turned on by default. 389 39020121023: 391 The ZERO_COPY_SOCKET kernel option has been removed and 392 split into SOCKET_SEND_COW and SOCKET_RECV_PFLIP. 393 NB: SOCKET_SEND_COW uses the VM page based copy-on-write 394 mechanism which is not safe and may result in kernel crashes. 395 NB: The SOCKET_RECV_PFLIP mechanism is useless as no current 396 driver supports disposeable external page sized mbuf storage. 397 Proper replacements for both zero-copy mechanisms are under 398 consideration and will eventually lead to complete removal 399 of the two kernel options. 400 40120121023: 402 The IPv4 network stack has been converted to network byte 403 order. The following modules need to be recompiled together 404 with kernel: carp(4), divert(4), gif(4), siftr(4), gre(4), 405 pf(4), ipfw(4), ng_ipfw(4), stf(4). 406 40720121022: 408 Support for non-MPSAFE filesystems was removed from VFS. The 409 VFS_VERSION was bumped, all filesystem modules shall be 410 recompiled. 411 41220121018: 413 All the non-MPSAFE filesystems have been disconnected from 414 the build. The full list includes: codafs, hpfs, ntfs, nwfs, 415 portalfs, smbfs, xfs. 416 41720121016: 418 The interface cloning API and ABI has changed. The following 419 modules need to be recompiled together with kernel: 420 ipfw(4), pfsync(4), pflog(4), usb(4), wlan(4), stf(4), 421 vlan(4), disc(4), edsc(4), if_bridge(4), gif(4), tap(4), 422 faith(4), epair(4), enc(4), tun(4), if_lagg(4), gre(4). 423 42420121015: 425 The sdhci driver was split in two parts: sdhci (generic SD Host 426 Controller logic) and sdhci_pci (actual hardware driver). 427 No kernel config modifications are required, but if you 428 load sdhc as a module you must switch to sdhci_pci instead. 429 43020121014: 431 Import the FUSE kernel and userland support into base system. 432 43320121013: 434 The GNU sort(1) program has been removed since the BSD-licensed 435 sort(1) has been the default for quite some time and no serious 436 problems have been reported. The corresponding WITH_GNU_SORT 437 knob has also gone. 438 43920121006: 440 The pfil(9) API/ABI for AF_INET family has been changed. Packet 441 filtering modules: pf(4), ipfw(4), ipfilter(4) need to be recompiled 442 with new kernel. 443 44420121001: 445 The net80211(4) ABI has been changed to allow for improved driver 446 PS-POLL and power-save support. All wireless drivers need to be 447 recompiled to work with the new kernel. 448 44920120913: 450 The random(4) support for the VIA hardware random number 451 generator (`PADLOCK') is no longer enabled unconditionally. 452 Add the padlock_rng device in the custom kernel config if 453 needed. The GENERIC kernels on i386 and amd64 do include the 454 device, so the change only affects the custom kernel 455 configurations. 456 45720120908: 458 The pf(4) packet filter ABI has been changed. pfctl(8) and 459 snmp_pf module need to be recompiled to work with new kernel. 460 46120120828: 462 A new ZFS feature flag "com.delphix:empty_bpobj" has been merged 463 to -HEAD. Pools that have empty_bpobj in active state can not be 464 imported read-write with ZFS implementations that do not support 465 this feature. For more information read the zpool-features(5) 466 manual page. 467 46820120727: 469 The sparc64 ZFS loader has been changed to no longer try to auto- 470 detect ZFS providers based on diskN aliases but now requires these 471 to be explicitly listed in the OFW boot-device environment variable. 472 47320120712: 474 The OpenSSL has been upgraded to 1.0.1c. Any binaries requiring 475 libcrypto.so.6 or libssl.so.6 must be recompiled. Also, there are 476 configuration changes. Make sure to merge /etc/ssl/openssl.cnf. 477 47820120712: 479 The following sysctls and tunables have been renamed for consistency 480 with other variables: 481 kern.cam.da.da_send_ordered -> kern.cam.da.send_ordered 482 kern.cam.ada.ada_send_ordered -> kern.cam.ada.send_ordered 483 48420120628: 485 The sort utility has been replaced with BSD sort. For now, GNU sort 486 is also available as "gnusort" or the default can be set back to 487 GNU sort by setting WITH_GNU_SORT. In this case, BSD sort will be 488 installed as "bsdsort". 489 49020120611: 491 A new version of ZFS (pool version 5000) has been merged to -HEAD. 492 Starting with this version the old system of ZFS pool versioning 493 is superseded by "feature flags". This concept enables forward 494 compatibility against certain future changes in functionality of ZFS 495 pools. The first read-only compatible "feature flag" for ZFS pools 496 is named "com.delphix:async_destroy". For more information 497 read the new zpool-features(5) manual page. 498 Please refer to the "ZFS notes" section of this file for information 499 on upgrading boot ZFS pools. 500 50120120417: 502 The malloc(3) implementation embedded in libc now uses sources imported 503 as contrib/jemalloc. The most disruptive API change is to 504 /etc/malloc.conf. If your system has an old-style /etc/malloc.conf, 505 delete it prior to installworld, and optionally re-create it using the 506 new format after rebooting. See malloc.conf(5) for details 507 (specifically the TUNING section and the "opt.*" entries in the MALLCTL 508 NAMESPACE section). 509 51020120328: 511 Big-endian MIPS TARGET_ARCH values no longer end in "eb". mips64eb 512 is now spelled mips64. mipsn32eb is now spelled mipsn32. mipseb is 513 now spelled mips. This is to aid compatibility with third-party 514 software that expects this naming scheme in uname(3). Little-endian 515 settings are unchanged. If you are updating a big-endian mips64 machine 516 from before this change, you may need to set MACHINE_ARCH=mips64 in 517 your environment before the new build system will recognize your machine. 518 51920120306: 520 Disable by default the option VFS_ALLOW_NONMPSAFE for all supported 521 platforms. 522 52320120229: 524 Now unix domain sockets behave "as expected" on nullfs(5). Previously 525 nullfs(5) did not pass through all behaviours to the underlying layer, 526 as a result if we bound to a socket on the lower layer we could connect 527 only to the lower path; if we bound to the upper layer we could connect 528 only to the upper path. The new behavior is one can connect to both the 529 lower and the upper paths regardless what layer path one binds to. 530 53120120211: 532 The getifaddrs upgrade path broken with 20111215 has been restored. 533 If you have upgraded in between 20111215 and 20120209 you need to 534 recompile libc again with your kernel. You still need to recompile 535 world to be able to configure CARP but this restriction already 536 comes from 20111215. 537 53820120114: 539 The set_rcvar() function has been removed from /etc/rc.subr. All 540 base and ports rc.d scripts have been updated, so if you have a 541 port installed with a script in /usr/local/etc/rc.d you can either 542 hand-edit the rcvar= line, or reinstall the port. 543 544 An easy way to handle the mass-update of /etc/rc.d: 545 rm /etc/rc.d/* && mergemaster -i 546 54720120109: 548 panic(9) now stops other CPUs in the SMP systems, disables interrupts 549 on the current CPU and prevents other threads from running. 550 This behavior can be reverted using the kern.stop_scheduler_on_panic 551 tunable/sysctl. 552 The new behavior can be incompatible with kern.sync_on_panic. 553 55420111215: 555 The carp(4) facility has been changed significantly. Configuration 556 of the CARP protocol via ifconfig(8) has changed, as well as format 557 of CARP events submitted to devd(8) has changed. See manual pages 558 for more information. The arpbalance feature of carp(4) is currently 559 not supported anymore. 560 561 Size of struct in_aliasreq, struct in6_aliasreq has changed. User 562 utilities using SIOCAIFADDR, SIOCAIFADDR_IN6, e.g. ifconfig(8), 563 need to be recompiled. 564 56520111122: 566 The acpi_wmi(4) status device /dev/wmistat has been renamed to 567 /dev/wmistat0. 568 56920111108: 570 The option VFS_ALLOW_NONMPSAFE option has been added in order to 571 explicitely support non-MPSAFE filesystems. 572 It is on by default for all supported platform at this present 573 time. 574 57520111101: 576 The broken amd(4) driver has been replaced with esp(4) in the amd64, 577 i386 and pc98 GENERIC kernel configuration files. 578 57920110930: 580 sysinstall has been removed 581 58220110923: 583 The stable/9 branch created in subversion. This corresponds to the 584 RELENG_9 branch in CVS. 585 58620110913: 587 This commit modifies vfs_register() so that it uses a hash 588 calculation to set vfc_typenum, which is enabled by default. 589 The first time a system is booted after this change, the 590 vfc_typenum values will change for all file systems. The 591 main effect of this is a change to the NFS server file handles 592 for file systems that use vfc_typenum in their fsid, such as ZFS. 593 It will, however, prevent vfc_typenum from changing when file 594 systems are loaded in a different order for subsequent reboots. 595 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf 596 until you are ready to remount all NFS clients after a reboot. 597 59820110828: 599 Bump the shared library version numbers for libraries that 600 do not use symbol versioning, have changed the ABI compared 601 to stable/8 and which shared library version was not bumped. 602 Done as part of 9.0-RELEASE cycle. 603 60420110815: 605 During the merge of Capsicum features, the fget(9) KPI was modified. 606 This may require the rebuilding of out-of-tree device drivers -- 607 issues have been reported specifically with the nVidia device driver. 608 __FreeBSD_version is bumped to 900041. 609 610 Also, there is a period between 20110811 and 20110814 where the 611 special devices /dev/{stdin,stdout,stderr} did not work correctly. 612 Building world from a kernel during that window may not work. 613 61420110628: 615 The packet filter (pf) code has been updated to OpenBSD 4.5. 616 You need to update userland tools to be in sync with kernel. 617 This update breaks backward compatibility with earlier pfsync(4) 618 versions. Care must be taken when updating redundant firewall setups. 619 62020110608: 621 The following sysctls and tunables are retired on x86 platforms: 622 machdep.hlt_cpus 623 machdep.hlt_logical_cpus 624 The following sysctl is retired: 625 machdep.hyperthreading_allowed 626 The sysctls were supposed to provide a way to dynamically offline and 627 online selected CPUs on x86 platforms, but the implementation has not 628 been reliable especially with SCHED_ULE scheduler. 629 machdep.hyperthreading_allowed tunable is still available to ignore 630 hyperthreading CPUs at OS level. 631 Individual CPUs can be disabled using hint.lapic.X.disabled tunable, 632 where X is an APIC ID of a CPU. Be advised, though, that disabling 633 CPUs in non-uniform fashion will result in non-uniform topology and 634 may lead to sub-optimal system performance with SCHED_ULE, which is 635 a default scheduler. 636 63720110607: 638 cpumask_t type is retired and cpuset_t is used in order to describe 639 a mask of CPUs. 640 64120110531: 642 Changes to ifconfig(8) for dynamic address family detection mandate 643 that you are running a kernel of 20110525 or later. Make sure to 644 follow the update procedure to boot a new kernel before installing 645 world. 646 64720110513: 648 Support for sun4v architecture is officially dropped 649 65020110503: 651 Several KPI breaking changes have been committed to the mii(4) layer, 652 the PHY drivers and consequently some Ethernet drivers using mii(4). 653 This means that miibus.ko and the modules of the affected Ethernet 654 drivers need to be recompiled. 655 656 Note to kernel developers: Given that the OUI bit reversion problem 657 was fixed as part of these changes all mii(4) commits related to OUIs, 658 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific 659 handling, no longer can be merged verbatim to stable/8 and previous 660 branches. 661 66220110430: 663 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' 664 into their kernel configurations along with 'device pci'. 665 66620110427: 667 The default NFS client is now the new NFS client, so fstype "newnfs" 668 is now "nfs" and the regular/old NFS client is now fstype "oldnfs". 669 Although mounts via fstype "nfs" will usually work without userland 670 changes, it is recommended that the mount(8) and mount_nfs(8) 671 commands be rebuilt from sources and that a link to mount_nfs called 672 mount_oldnfs be created. The new client is compiled into the 673 kernel with "options NFSCL" and this is needed for diskless root 674 file systems. The GENERIC kernel configs have been changed to use 675 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER. 676 To use the regular/old client, you can "mount -t oldnfs ...". For 677 a diskless root file system, you must also include a line like: 678 679 vfs.root.mountfrom="oldnfs:" 680 681 in the boot/loader.conf on the root fs on the NFS server to make 682 a diskless root fs use the old client. 683 68420110424: 685 The GENERIC kernels for all architectures now default to the new 686 CAM-based ATA stack. It means that all legacy ATA drivers were 687 removed and replaced by respective CAM drivers. If you are using 688 ATA device names in /etc/fstab or other places, make sure to update 689 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY, 690 where 'Y's are the sequential numbers starting from zero for each type 691 in order of detection, unless configured otherwise with tunables, 692 see cam(4)). There will be symbolic links created in /dev/ to map 693 old adX devices to the respective adaY. They should provide basic 694 compatibility for file systems mounting in most cases, but they do 695 not support old user-level APIs and do not have respective providers 696 in GEOM. Consider using updated management tools with new device names. 697 698 It is possible to load devices ahci, ata, siis and mvs as modules, 699 but option ATA_CAM should remain in kernel configuration to make ata 700 module work as CAM driver supporting legacy ATA controllers. Device ata 701 still can be used in modular fashion (atacore + ...). Modules atadisk 702 and atapi* are not used and won't affect operation in ATA_CAM mode. 703 Note that to use CAM-based ATA kernel should include CAM devices 704 scbus, pass, da (or explicitly ada), cd and optionally others. All of 705 them are parts of the cam module. 706 707 ataraid(4) functionality is now supported by the RAID GEOM class. 708 To use it you can load geom_raid kernel module and use graid(8) tool 709 for management. Instead of /dev/arX device names, use /dev/raid/rX. 710 711 No kernel config options or code have been removed, so if a problem 712 arises, please report it and optionally revert to the old ATA stack. 713 In order to do it you can remove from the kernel config: 714 options ATA_CAM 715 device ahci 716 device mvs 717 device siis 718 , and instead add back: 719 device atadisk # ATA disk drives 720 device ataraid # ATA RAID drives 721 device atapicd # ATAPI CDROM drives 722 device atapifd # ATAPI floppy drives 723 device atapist # ATAPI tape drives 724 72520110423: 726 The default NFS server has been changed to the new server, which 727 was referred to as the experimental server. If you need to switch 728 back to the old NFS server, you must now put the "-o" option on 729 both the mountd and nfsd commands. This can be done using the 730 mountd_flags and nfs_server_flags rc.conf variables until an 731 update to the rc scripts is committed, which is coming soon. 732 73320110418: 734 The GNU Objective-C runtime library (libobjc), and other Objective-C 735 related components have been removed from the base system. If you 736 require an Objective-C library, please use one of the available ports. 737 73820110331: 739 ath(4) has been split into bus- and device- modules. if_ath contains 740 the HAL, the TX rate control and the network device code. if_ath_pci 741 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb 742 contains the AHB glue. Users need to load both if_ath_pci and if_ath 743 in order to use ath on everything else. 744 745 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only 746 need to load if_ath and if_ath_pci for ath(4) operation. 747 74820110314: 749 As part of the replacement of sysinstall, the process of building 750 release media has changed significantly. For details, please re-read 751 release(7), which has been updated to reflect the new build process. 752 75320110218: 754 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This 755 is the last available version under GPLv2. It brings a number of new 756 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE 757 4.1 and SSE 4.2), better support for powerpc64, a number of new 758 directives, and lots of other small improvements. See the ChangeLog 759 file in contrib/binutils for the full details. 760 76120110218: 762 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868 763 compliant, and will now use half of hash for authentication. 764 This will break interoperability with all stacks (including all 765 actual FreeBSD versions) who implement 766 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for 767 authentication). 768 The only workaround with such peers is to use another HMAC 769 algorithm for IPsec ("phase 2") authentication. 770 77120110207: 772 Remove the uio_yield prototype and symbol. This function has 773 been misnamed since it was introduced and should not be 774 globally exposed with this name. The equivalent functionality 775 is now available using kern_yield(curthread->td_user_pri). 776 The function remains undocumented. 777 77820110112: 779 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers, 780 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking 781 for scalar sysctls is defined but disabled. Code that needs 782 UQUAD to pass the type checking that must compile on older 783 systems where the define is not present can check against 784 __FreeBSD_version >= 900030. 785 786 The system dialog(1) has been replaced with a new version previously 787 in ports as devel/cdialog. dialog(1) is mostly command-line compatible 788 with the previous version, but the libdialog associated with it has 789 a largely incompatible API. As such, the original version of libdialog 790 will be kept temporarily as libodialog, until its base system consumers 791 are replaced or updated. Bump __FreeBSD_version to 900030. 792 79320110103: 794 If you are trying to run make universe on a -stable system, and you get 795 the following warning: 796 "Makefile", line 356: "Target architecture for i386/conf/GENERIC 797 unknown. config(8) likely too old." 798 or something similar to it, then you must upgrade your -stable system 799 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in 800 stable/8) or build the config from the latest stable/8 branch and 801 install it on your system. 802 803 Prior to this date, building a current universe on 8-stable system from 804 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing 805 error in the first kernel build phase. A new config on those old 806 systems will fix that problem for older versions of -current. 807 80820101228: 809 The TCP stack has been modified to allow Khelp modules to interact with 810 it via helper hook points and store per-connection data in the TCP 811 control block. Bump __FreeBSD_version to 900029. User space tools that 812 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to 813 be recompiled. 814 81520101114: 816 Generic IEEE 802.3 annex 31B full duplex flow control support has been 817 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along 818 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted 819 to take advantage of it instead of using custom implementations. This 820 means that these drivers now no longer unconditionally advertise 821 support for flow control but only do so if flow control is a selected 822 media option. This was implemented in the generic support that way in 823 order to allow flow control to be switched on and off via ifconfig(8) 824 with the PHY specific default to typically off in order to protect 825 from unwanted effects. Consequently, if you used flow control with 826 one of the above mentioned drivers you now need to explicitly enable 827 it, for example via: 828 ifconfig bge0 media auto mediaopt flowcontrol 829 830 Along with the above mentioned changes generic support for setting 831 1000baseT master mode also has been added and brgphy(4), ciphy(4), 832 e1000phy(4) as well as ip1000phy(4) have been converted to take 833 advantage of it. This means that these drivers now no longer take the 834 link0 parameter for selecting master mode but the master media option 835 has to be used instead, for example like in the following: 836 ifconfig bge0 media 1000baseT mediaopt full-duplex,master 837 838 Selection of master mode now is also available with all other PHY 839 drivers supporting 1000baseT. 840 84120101111: 842 The TCP stack has received a significant update to add support for 843 modularised congestion control and generally improve the clarity of 844 congestion control decisions. Bump __FreeBSD_version to 900025. User 845 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g. 846 sockstat) need to be recompiled. 847 84820101002: 849 The man(1) utility has been replaced by a new version that no longer 850 uses /etc/manpath.config. Please consult man.conf(5) for how to 851 migrate local entries to the new format. 852 85320100928: 854 The copyright strings printed by login(1) and sshd(8) at the time of a 855 new connection have been removed to follow other operating systems and 856 upstream sshd. 857 85820100915: 859 A workaround for a fixed ld bug has been removed in kernel code, 860 so make sure that your system ld is built from sources after 861 revision 210245 from 2010-07-19 (r211583 if building head kernel 862 on stable/8, r211584 for stable/7; both from 2010-08-21). 863 A symptom of incorrect ld version is different addresses for 864 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules. 865 86620100913: 867 The $ipv6_prefer variable in rc.conf(5) has been split into 868 $ip6addrctl_policy and $ipv6_activate_all_interfaces. 869 870 The $ip6addrctl_policy is a variable to choose a pre-defined 871 address selection policy set by ip6addrctl(8). A value 872 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The 873 default is "AUTO". 874 875 The $ipv6_activate_all_interfaces specifies whether IFDISABLED 876 flag (see an entry of 20090926) is set on an interface with no 877 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for 878 security reason. If you want IPv6 link-local address on all 879 interfaces by default, set this to "YES". 880 881 The old ipv6_prefer="YES" is equivalent to 882 ipv6_activate_all_interfaces="YES" and 883 ip6addrctl_policy="ipv6_prefer". 884 88520100913: 886 DTrace has grown support for userland tracing. Due to this, DTrace is 887 now i386 and amd64 only. 888 dtruss(1) is now installed by default on those systems and a new 889 kernel module is needed for userland tracing: fasttrap. 890 No changes to your kernel config file are necessary to enable 891 userland tracing, but you might consider adding 'STRIP=' and 892 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want 893 to have informative userland stack traces in DTrace (ustack). 894 89520100725: 896 The acpi_aiboost(4) driver has been removed in favor of the new 897 aibs(4) driver. You should update your kernel configuration file. 898 89920100722: 900 BSD grep has been imported to the base system and it is built by 901 default. It is completely BSD licensed, highly GNU-compatible, uses 902 less memory than its GNU counterpart and has a small codebase. 903 However, it is slower than its GNU counterpart, which is mostly 904 noticeable for larger searches, for smaller ones it is measurable 905 but not significant. The reason is complex, the most important factor 906 is that we lack a modern and efficient regex library and GNU 907 overcomes this by optimizing the searches internally. Future work 908 on improving the regex performance is planned, for the meantime, 909 users that need better performance, can build GNU grep instead by 910 setting the WITH_GNU_GREP knob. 911 91220100713: 913 Due to the import of powerpc64 support, all existing powerpc kernel 914 configuration files must be updated with a machine directive like this: 915 machine powerpc powerpc 916 917 In addition, an updated config(8) is required to build powerpc kernels 918 after this change. 919 92020100713: 921 A new version of ZFS (version 15) has been merged to -HEAD. 922 This version uses a python library for the following subcommands: 923 zfs allow, zfs unallow, zfs groupspace, zfs userspace. 924 For full functionality of these commands the following port must 925 be installed: sysutils/py-zfs 926 92720100429: 928 'vm_page's are now hashed by physical address to an array of mutexes. 929 Currently this is only used to serialize access to hold_count. Over 930 time the page queue mutex will be peeled away. This changes the size 931 of pmap on every architecture. And requires all callers of vm_page_hold 932 and vm_page_unhold to be updated. 933 93420100402: 935 WITH_CTF can now be specified in src.conf (not recommended, there 936 are some problems with static executables), make.conf (would also 937 affect ports which do not use GNU make and do not override the 938 compile targets) or in the kernel config (via "makeoptions 939 WITH_CTF=yes"). 940 When WITH_CTF was specified there before this was silently ignored, 941 so make sure that WITH_CTF is not used in places which could lead 942 to unwanted behavior. 943 94420100311: 945 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32 946 to allow 32-bit compatibility on non-x86 platforms. All kernel 947 configurations on amd64 and ia64 platforms using these options must 948 be modified accordingly. 949 95020100113: 951 The utmp user accounting database has been replaced with utmpx, 952 the user accounting interface standardized by POSIX. 953 Unfortunately the semantics of utmp and utmpx don't match, 954 making it practically impossible to support both interfaces. 955 The user accounting database is used by tools like finger(1), 956 last(1), talk(1), w(1) and ac(8). 957 958 All applications in the base system use utmpx. This means only 959 local binaries (e.g. from the ports tree) may still use these 960 utmp database files. These applications must be rebuilt to make 961 use of utmpx. 962 963 After the system has been upgraded, it is safe to remove the old 964 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*), 965 assuming their contents is of no importance anymore. Old wtmp 966 databases can only be used by last(1) and ac(8) after they have 967 been converted to the new format using wtmpcvt(1). 968 96920100108: 970 Introduce the kernel thread "deadlock resolver" (which can be enabled 971 via the DEADLKRES option, see NOTES for more details) and the 972 sleepq_type() function for sleepqueues. 973 97420091202: 975 The rc.firewall and rc.firewall6 were unified, and 976 rc.firewall6 and rc.d/ip6fw were removed. 977 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc 978 variables are obsoleted. Instead, the following new rc 979 variables are added to rc.d/ipfw: 980 981 firewall_client_net_ipv6, firewall_simple_iif_ipv6, 982 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6, 983 firewall_simple_onet_ipv6, firewall_trusted_ipv6 984 985 The meanings correspond to the relevant IPv4 variables. 986 98720091125: 988 8.0-RELEASE. 989 99020091113: 991 The default terminal emulation for syscons(4) has been changed 992 from cons25 to xterm on all platforms except pc98. This means 993 that the /etc/ttys file needs to be updated to ensure correct 994 operation of applications on the console. 995 996 The terminal emulation style can be toggled per window by using 997 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration 998 options can be used to change the compile-time default back to 999 cons25. 1000 1001 To prevent graphical artifacts, make sure the TERM environment 1002 variable is set to match the terminal emulation that is being 1003 performed by syscons(4). 1004 100520091109: 1006 The layout of the structure ieee80211req_scan_result has changed. 1007 Applications that require wireless scan results (e.g. ifconfig(8)) 1008 from net80211 need to be recompiled. 1009 1010 Applications such as wpa_supplicant(8) may require a full world 1011 build without using NO_CLEAN in order to get synchronized with the 1012 new structure. 1013 101420091025: 1015 The iwn(4) driver has been updated to support the 5000 and 5150 series. 1016 There's one kernel module for each firmware. Adding "device iwnfw" 1017 to the kernel configuration file means including all three firmware 1018 images inside the kernel. If you want to include just the one for 1019 your wireless card, use the devices iwn4965fw, iwn5000fw or 1020 iwn5150fw. 1021 102220090926: 1023 The rc.d/network_ipv6, IPv6 configuration script has been integrated 1024 into rc.d/netif. The changes are the following: 1025 1026 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF 1027 for IPv4. For aliases, $ifconfig_IF_aliasN should be used. 1028 Note that both variables need the "inet6" keyword at the head. 1029 1030 Do not set $ipv6_network_interfaces manually if you do not 1031 understand what you are doing. It is not needed in most cases. 1032 1033 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but 1034 they are obsolete. 1035 1036 2. $ipv6_enable is obsolete. Use $ipv6_prefer and 1037 "inet6 accept_rtadv" keyword in ifconfig(8) instead. 1038 1039 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and 1040 all configured interfaces have "inet6 accept_rtadv" in the 1041 $ifconfig_IF_ipv6. These are for backward compatibility. 1042 1043 3. A new variable $ipv6_prefer has been added. If NO, IPv6 1044 functionality of interfaces with no corresponding 1045 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, 1046 and the default address selection policy of ip6addrctl(8) 1047 is the IPv4-preferred one (see rc.d/ip6addrctl for more details). 1048 Note that if you want to configure IPv6 functionality on the 1049 disabled interfaces after boot, first you need to clear the flag by 1050 using ifconfig(8) like: 1051 1052 ifconfig em0 inet6 -ifdisabled 1053 1054 If YES, the default address selection policy is set as 1055 IPv6-preferred. 1056 1057 The default value of $ipv6_prefer is NO. 1058 1059 4. If your system need to receive Router Advertisement messages, 1060 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) 1061 scripts automatically invoke rtsol(8) when the interface becomes 1062 UP. The Router Advertisement messages are used for SLAAC 1063 (State-Less Address AutoConfiguration). 1064 106520090922: 1066 802.11s D3.03 support was committed. This is incompatible with the 1067 previous code, which was based on D3.0. 1068 106920090912: 1070 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value 1071 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to 1072 control whether accepting Router Advertisement messages or not. 1073 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and 1074 a sysctl variable net.inet6.ip6.auto_linklocal is its default value. 1075 The ifconfig(8) utility now supports these flags. 1076 107720090910: 1078 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for 1079 mount(8) and -a option for df(1) to see them. 1080 108120090825: 1082 The old tunable hw.bus.devctl_disable has been superseded by 1083 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be 1084 replaced by hw.bus.devctl_queue=0. The default for this new tunable 1085 is 1000. 1086 108720090813: 1088 Remove the option STOP_NMI. The default action is now to use NMI only 1089 for KDB via the newly introduced function stop_cpus_hard() and 1090 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64. 1091 109220090803: 1093 The stable/8 branch created in subversion. This corresponds to the 1094 RELENG_8 branch in CVS. 1095 109620090719: 1097 Bump the shared library version numbers for all libraries that do not 1098 use symbol versioning as part of the 8.0-RELEASE cycle. Bump 1099 __FreeBSD_version to 800105. 1100 110120090714: 1102 Due to changes in the implementation of virtual network stack support, 1103 all network-related kernel modules must be recompiled. As this change 1104 breaks the ABI, bump __FreeBSD_version to 800104. 1105 110620090713: 1107 The TOE interface to the TCP syncache has been modified to remove 1108 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. 1109 The cxgb driver is the only TOE consumer affected by this change, and 1110 needs to be recompiled along with the kernel. As this change breaks 1111 the ABI, bump __FreeBSD_version to 800103. 1112 111320090712: 1114 Padding has been added to struct tcpcb, sackhint and tcpstat in 1115 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst 1116 maintaining the ABI. However, this change breaks the ABI, so bump 1117 __FreeBSD_version to 800102. User space tools that rely on the size of 1118 any of these structs (e.g. sockstat) need to be recompiled. 1119 112020090630: 1121 The NFS_LEGACYRPC option has been removed along with the old kernel 1122 RPC implementation that this option selected. Kernel configurations 1123 may need to be adjusted. 1124 112520090629: 1126 The network interface device nodes at /dev/net/<interface> have been 1127 removed. All ioctl operations can be performed the normal way using 1128 routing sockets. The kqueue functionality can generally be replaced 1129 with routing sockets. 1130 113120090628: 1132 The documentation from the FreeBSD Documentation Project (Handbook, 1133 FAQ, etc.) is now installed via packages by sysinstall(8) and under 1134 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc. 1135 113620090624: 1137 The ABI of various structures related to the SYSV IPC API have been 1138 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel 1139 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to 1140 800100. 1141 114220090622: 1143 Layout of struct vnet has changed as routing related variables were 1144 moved to their own Vimage module. Modules need to be recompiled. Bump 1145 __FreeBSD_version to 800099. 1146 114720090619: 1148 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024 1149 respectively. As long as no more than 16 groups per process are used, 1150 no changes should be visible. When more than 16 groups are used, old 1151 binaries may fail if they call getgroups() or getgrouplist() with 1152 statically sized storage. Recompiling will work around this, but 1153 applications should be modified to use dynamically allocated storage 1154 for group arrays as POSIX.1-2008 does not cap an implementation's 1155 number of supported groups at NGROUPS_MAX+1 as previous versions did. 1156 1157 NFS and portalfs mounts may also be affected as the list of groups is 1158 truncated to 16. Users of NFS who use more than 16 groups, should 1159 take care that negative group permissions are not used on the exported 1160 file systems as they will not be reliable unless a GSSAPI based 1161 authentication method is used. 1162 116320090616: 1164 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This 1165 option compiles in the support for adaptive spinning for lockmgrs 1166 which want to enable it. The lockinit() function now accepts the flag 1167 LK_ADAPTIVE in order to make the lock object subject to adaptive 1168 spinning when both held in write and read mode. 1169 117020090613: 1171 The layout of the structure returned by IEEE80211_IOC_STA_INFO has 1172 changed. User applications that use this ioctl need to be rebuilt. 1173 117420090611: 1175 The layout of struct thread has changed. Kernel and modules need to 1176 be rebuilt. 1177 117820090608: 1179 The layout of structs ifnet, domain, protosw and vnet_net has changed. 1180 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097. 1181 118220090602: 1183 window(1) has been removed from the base system. It can now be 1184 installed from ports. The port is called misc/window. 1185 118620090601: 1187 The way we are storing and accessing `routing table' entries has 1188 changed. Programs reading the FIB, like netstat, need to be 1189 re-compiled. 1190 119120090601: 1192 A new netisr implementation has been added for FreeBSD 8. Network 1193 file system modules, such as igmp, ipdivert, and others, should be 1194 rebuilt. 1195 Bump __FreeBSD_version to 800096. 1196 119720090530: 1198 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no 1199 more valid. 1200 120120090530: 1202 Add VOP_ACCESSX(9). File system modules need to be rebuilt. 1203 Bump __FreeBSD_version to 800094. 1204 120520090529: 1206 Add mnt_xflag field to 'struct mount'. File system modules need to be 1207 rebuilt. 1208 Bump __FreeBSD_version to 800093. 1209 121020090528: 1211 The compiling option ADAPTIVE_SX has been retired while it has been 1212 introduced the option NO_ADAPTIVE_SX which handles the reversed logic. 1213 The KPI for sx_init_flags() changes as accepting flags: 1214 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has 1215 been introduced in order to handle the reversed logic. 1216 Bump __FreeBSD_version to 800092. 1217 121820090527: 1219 Add support for hierarchical jails. Remove global securelevel. 1220 Bump __FreeBSD_version to 800091. 1221 122220090523: 1223 The layout of struct vnet_net has changed, therefore modules 1224 need to be rebuilt. 1225 Bump __FreeBSD_version to 800090. 1226 122720090523: 1228 The newly imported zic(8) produces a new format in the output. Please 1229 run tzsetup(8) to install the newly created data to /etc/localtime. 1230 123120090520: 1232 The sysctl tree for the usb stack has renamed from hw.usb2.* to 1233 hw.usb.* and is now consistent again with previous releases. 1234 123520090520: 1236 802.11 monitor mode support was revised and driver api's were changed. 1237 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead 1238 of DLT_IEEE802_11. No user-visible data structures were changed but 1239 applications that use DLT_IEEE802_11 may require changes. 1240 Bump __FreeBSD_version to 800088. 1241 124220090430: 1243 The layout of the following structs has changed: sysctl_oid, 1244 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet, 1245 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or 1246 panics may be experienced. World rebuild is required for 1247 correctly checking networking state from userland. 1248 Bump __FreeBSD_version to 800085. 1249 125020090429: 1251 MLDv2 and Source-Specific Multicast (SSM) have been merged 1252 to the IPv6 stack. VIMAGE hooks are in but not yet used. 1253 The implementation of SSM within FreeBSD's IPv6 stack closely 1254 follows the IPv4 implementation. 1255 1256 For kernel developers: 1257 1258 * The most important changes are that the ip6_output() and 1259 ip6_input() paths no longer take the IN6_MULTI_LOCK, 1260 and this lock has been downgraded to a non-recursive mutex. 1261 1262 * As with the changes to the IPv4 stack to support SSM, filtering 1263 of inbound multicast traffic must now be performed by transport 1264 protocols within the IPv6 stack. This does not apply to TCP and 1265 SCTP, however, it does apply to UDP in IPv6 and raw IPv6. 1266 1267 * The KPIs used by IPv6 multicast are similar to those used by 1268 the IPv4 stack, with the following differences: 1269 * im6o_mc_filter() is analogous to imo_multicast_filter(). 1270 * The legacy KAME entry points in6_joingroup and in6_leavegroup() 1271 are shimmed to in6_mc_join() and in6_mc_leave() respectively. 1272 * IN6_LOOKUP_MULTI() has been deprecated and removed. 1273 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs 1274 for MLDv1 have an additional 'timer' argument which is used to 1275 jitter the initial membership report for the solicited-node 1276 multicast membership on-link. 1277 * This is not strictly needed for MLDv2, which already jitters 1278 its report transmissions. However, the 'timer' argument is 1279 preserved in case MLDv1 is active on the interface. 1280 1281 * The KAME linked-list based IPv6 membership implementation has 1282 been refactored to use a vector similar to that used by the IPv4 1283 stack. 1284 Code which maintains a list of its own multicast memberships 1285 internally, e.g. carp, has been updated to reflect the new 1286 semantics. 1287 1288 * There is a known Lock Order Reversal (LOR) due to in6_setscope() 1289 acquiring the IF_AFDATA_LOCK and being called within ip6_output(). 1290 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an 1291 implementation constraint which needs to be addressed in HEAD. 1292 1293 For application developers: 1294 1295 * The changes are broadly similar to those made for the IPv4 1296 stack. 1297 1298 * The use of IPv4 and IPv6 multicast socket options on the same 1299 socket, using mapped addresses, HAS NOT been tested or supported. 1300 1301 * There are a number of issues with the implementation of various 1302 IPv6 multicast APIs which need to be resolved in the API surface 1303 before the implementation is fully compatible with KAME userland 1304 use, and these are mostly to do with interface index treatment. 1305 1306 * The literature available discusses the use of either the delta / ASM 1307 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API 1308 using setsourcefilter(3)/getsourcefilter(3). For more information 1309 please refer to RFC 3768, 'Socket Interface Extensions for 1310 Multicast Source Filters'. 1311 1312 * Applications which use the published RFC 3678 APIs should be fine. 1313 1314 For systems administrators: 1315 1316 * The mtest(8) utility has been refactored to support IPv6, in 1317 addition to IPv4. Interface addresses are no longer accepted 1318 as arguments, their names must be used instead. The utility 1319 will map the interface name to its first IPv4 address as 1320 returned by getifaddrs(3). 1321 1322 * The ifmcstat(8) utility has also been updated to print the MLDv2 1323 endpoint state and source filter lists via sysctl(3). 1324 1325 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable 1326 loopback of IPv6 multicast datagrams by default; it defaults to 1 1327 to preserve the existing behaviour. Disabling multicast loopback is 1328 recommended for optimal system performance. 1329 1330 * The IPv6 MROUTING code has been changed to examine this sysctl 1331 instead of attempting to perform a group lookup before looping 1332 back forwarded datagrams. 1333 1334 Bump __FreeBSD_version to 800084. 1335 133620090422: 1337 Implement low-level Bluetooth HCI API. 1338 Bump __FreeBSD_version to 800083. 1339 134020090419: 1341 The layout of struct malloc_type, used by modules to register new 1342 memory allocation types, has changed. Most modules will need to 1343 be rebuilt or panics may be experienced. 1344 Bump __FreeBSD_version to 800081. 1345 134620090415: 1347 Anticipate overflowing inp_flags - add inp_flags2. 1348 This changes most offsets in inpcb, so checking v4 connection 1349 state will require a world rebuild. 1350 Bump __FreeBSD_version to 800080. 1351 135220090415: 1353 Add an llentry to struct route and struct route_in6. Modules 1354 embedding a struct route will need to be recompiled. 1355 Bump __FreeBSD_version to 800079. 1356 135720090414: 1358 The size of rt_metrics_lite and by extension rtentry has changed. 1359 Networking administration apps will need to be recompiled. 1360 The route command now supports show as an alias for get, weighting 1361 of routes, sticky and nostick flags to alter the behavior of stateful 1362 load balancing. 1363 Bump __FreeBSD_version to 800078. 1364 136520090408: 1366 Do not use Giant for kbdmux(4) locking. This is wrong and 1367 apparently causing more problems than it solves. This will 1368 re-open the issue where interrupt handlers may race with 1369 kbdmux(4) in polling mode. Typical symptoms include (but 1370 not limited to) duplicated and/or missing characters when 1371 low level console functions (such as gets) are used while 1372 interrupts are enabled (for example geli password prompt, 1373 mountroot prompt etc.). Disabling kbdmux(4) may help. 1374 137520090407: 1376 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed; 1377 kernel modules referencing any of the above need to be recompiled. 1378 Bump __FreeBSD_version to 800075. 1379 138020090320: 1381 GEOM_PART has become the default partition slicer for storage devices, 1382 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It 1383 introduces some changes: 1384 1385 MSDOS/EBR: the devices created from MSDOS extended partition entries 1386 (EBR) can be named differently than with GEOM_MBR and are now symlinks 1387 to devices with offset-based names. fstabs may need to be modified. 1388 1389 BSD: the "geometry does not match label" warning is harmless in most 1390 cases but it points to problems in file system misalignment with 1391 disk geometry. The "c" partition is now implicit, covers the whole 1392 top-level drive and cannot be (mis)used by users. 1393 1394 General: Kernel dumps are now not allowed to be written to devices 1395 whose partition types indicate they are meant to be used for file 1396 systems (or, in case of MSDOS partitions, as something else than 1397 the "386BSD" type). 1398 1399 Most of these changes date approximately from 200812. 1400 140120090319: 1402 The uscanner(4) driver has been removed from the kernel. This follows 1403 Linux removing theirs in 2.6 and making libusb the default interface 1404 (supported by sane). 1405 140620090319: 1407 The multicast forwarding code has been cleaned up. netstat(1) 1408 only relies on KVM now for printing bandwidth upcall meters. 1409 The IPv4 and IPv6 modules are split into ip_mroute_mod and 1410 ip6_mroute_mod respectively. The config(5) options for statically 1411 compiling this code remain the same, i.e. 'options MROUTING'. 1412 141320090315: 1414 Support for the IFF_NEEDSGIANT network interface flag has been 1415 removed, which means that non-MPSAFE network device drivers are no 1416 longer supported. In particular, if_ar, if_sr, and network device 1417 drivers from the old (legacy) USB stack can no longer be built or 1418 used. 1419 142020090313: 1421 POSIX.1 Native Language Support (NLS) has been enabled in libc and 1422 a bunch of new language catalog files have also been added. 1423 This means that some common libc messages are now localized and 1424 they depend on the LC_MESSAGES environmental variable. 1425 142620090313: 1427 The k8temp(4) driver has been renamed to amdtemp(4) since 1428 support for Family 10 and Family 11 CPU families was added. 1429 143020090309: 1431 IGMPv3 and Source-Specific Multicast (SSM) have been merged 1432 to the IPv4 stack. VIMAGE hooks are in but not yet used. 1433 1434 For kernel developers, the most important changes are that the 1435 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(), 1436 and this lock has been downgraded to a non-recursive mutex. 1437 1438 Transport protocols (UDP, Raw IP) are now responsible for filtering 1439 inbound multicast traffic according to group membership and source 1440 filters. The imo_multicast_filter() KPI exists for this purpose. 1441 Transports which do not use multicast (SCTP, TCP) already reject 1442 multicast by default. Forwarding and receive performance may improve 1443 as a mutex acquisition is no longer needed in the ip_input() 1444 low-level input path. in_addmulti() and in_delmulti() are shimmed 1445 to new KPIs which exist to support SSM in-kernel. 1446 1447 For application developers, it is recommended that loopback of 1448 multicast datagrams be disabled for best performance, as this 1449 will still cause the lock to be taken for each looped-back 1450 datagram transmission. The net.inet.ip.mcast.loop sysctl may 1451 be tuned to 0 to disable loopback by default; it defaults to 1 1452 to preserve the existing behaviour. 1453 1454 For systems administrators, to obtain best performance with 1455 multicast reception and multiple groups, it is always recommended 1456 that a card with a suitably precise hash filter is used. Hash 1457 collisions will still result in the lock being taken within the 1458 transport protocol input path to check group membership. 1459 1460 If deploying FreeBSD in an environment with IGMP snooping switches, 1461 it is recommended that the net.inet.igmp.sendlocal sysctl remain 1462 enabled; this forces 224.0.0.0/24 group membership to be announced 1463 via IGMP. 1464 1465 The size of 'struct igmpstat' has changed; netstat needs to be 1466 recompiled to reflect this. 1467 Bump __FreeBSD_version to 800070. 1468 146920090309: 1470 libusb20.so.1 is now installed as libusb.so.1 and the ports system 1471 updated to use it. This requires a buildworld/installworld in order to 1472 update the library and dependencies (usbconfig, etc). Its advisable to 1473 rebuild all ports which uses libusb. More specific directions are given 1474 in the ports collection UPDATING file. Any /etc/libmap.conf entries for 1475 libusb are no longer required and can be removed. 1476 147720090302: 1478 A workaround is committed to allow the creation of System V shared 1479 memory segment of size > 2 GB on the 64-bit architectures. 1480 Due to a limitation of the existing ABI, the shm_segsz member 1481 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is 1482 wrong for large segments. Note that limits must be explicitly 1483 raised to allow such segments to be created. 1484 148520090301: 1486 The layout of struct ifnet has changed, requiring a rebuild of all 1487 network device driver modules. 1488 148920090227: 1490 The /dev handling for the new USB stack has changed, a 1491 buildworld/installworld is required for libusb20. 1492 149320090223: 1494 The new USB2 stack has now been permanently moved in and all kernel and 1495 module names reverted to their previous values (eg, usb, ehci, ohci, 1496 ums, ...). The old usb stack can be compiled in by prefixing the name 1497 with the letter 'o', the old usb modules have been removed. 1498 Updating entry 20090216 for xorg and 20090215 for libmap may still 1499 apply. 1500 150120090217: 1502 The rc.conf(5) option if_up_delay has been renamed to 1503 defaultroute_delay to better reflect its purpose. If you have 1504 customized this setting in /etc/rc.conf you need to update it to 1505 use the new name. 1506 150720090216: 1508 xorg 7.4 wants to configure its input devices via hald which does not 1509 yet work with USB2. If the keyboard/mouse does not work in xorg then 1510 add 1511 Option "AllowEmptyInput" "off" 1512 to your ServerLayout section. This will cause X to use the configured 1513 kbd and mouse sections from your xorg.conf. 1514 151520090215: 1516 The GENERIC kernels for all architectures now default to the new USB2 1517 stack. No kernel config options or code have been removed so if a 1518 problem arises please report it and optionally revert to the old USB 1519 stack. If you are loading USB kernel modules or have a custom kernel 1520 that includes GENERIC then ensure that usb names are also changed over, 1521 eg uftdi -> usb2_serial_ftdi. 1522 1523 Older programs linked against the ports libusb 0.1 need to be 1524 redirected to the new stack's libusb20. /etc/libmap.conf can 1525 be used for this: 1526 # Map old usb library to new one for usb2 stack 1527 libusb-0.1.so.8 libusb20.so.1 1528 152920090209: 1530 All USB ethernet devices now attach as interfaces under the name ueN 1531 (eg. ue0). This is to provide a predictable name as vendors often 1532 change usb chipsets in a product without notice. 1533 153420090203: 1535 The ichsmb(4) driver has been changed to require SMBus slave 1536 addresses be left-justified (xxxxxxx0b) rather than right-justified. 1537 All of the other SMBus controller drivers require left-justified 1538 slave addresses, so this change makes all the drivers provide the 1539 same interface. 1540 154120090201: 1542 INET6 statistics (struct ip6stat) was updated. 1543 netstat(1) needs to be recompiled. 1544 154520090119: 1546 NTFS has been removed from GENERIC kernel on amd64 to match 1547 GENERIC on i386. Should not cause any issues since mount_ntfs(8) 1548 will load ntfs.ko module automatically when NTFS support is 1549 actually needed, unless ntfs.ko is not installed or security 1550 level prohibits loading kernel modules. If either is the case, 1551 "options NTFS" has to be added into kernel config. 1552 155320090115: 1554 TCP Appropriate Byte Counting (RFC 3465) support added to kernel. 1555 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to 1556 800061. User space tools that rely on the size of struct tcpcb in 1557 tcp_var.h (e.g. sockstat) need to be recompiled. 1558 155920081225: 1560 ng_tty(4) module updated to match the new TTY subsystem. 1561 Due to API change, user-level applications must be updated. 1562 New API support added to mpd5 CVS and expected to be present 1563 in next mpd5.3 release. 1564 156520081219: 1566 With __FreeBSD_version 800060 the makefs tool is part of 1567 the base system (it was a port). 1568 156920081216: 1570 The afdata and ifnet locks have been changed from mutexes to 1571 rwlocks, network modules will need to be re-compiled. 1572 157320081214: 1574 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite. 1575 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated. 1576 The new code reduced struct rtentry{} by 16 bytes on 32-bit 1577 architecture and 40 bytes on 64-bit architecture. The userland 1578 applications "arp" and "ndp" have been updated accordingly. 1579 The output from "netstat -r" shows only routing entries and 1580 none of the L2 information. 1581 158220081130: 1583 __FreeBSD_version 800057 marks the switchover from the 1584 binary ath hal to source code. Users must add the line: 1585 1586 options AH_SUPPORT_AR5416 1587 1588 to their kernel config files when specifying: 1589 1590 device ath_hal 1591 1592 The ath_hal module no longer exists; the code is now compiled 1593 together with the driver in the ath module. It is now 1594 possible to tailor chip support (i.e. reduce the set of chips 1595 and thereby the code size); consult ath_hal(4) for details. 1596 159720081121: 1598 __FreeBSD_version 800054 adds memory barriers to 1599 <machine/atomic.h>, new interfaces to ifnet to facilitate 1600 multiple hardware transmit queues for cards that support 1601 them, and a lock-less ring-buffer implementation to 1602 enable drivers to more efficiently manage queueing of 1603 packets. 1604 160520081117: 1606 A new version of ZFS (version 13) has been merged to -HEAD. 1607 This version has zpool attribute "listsnapshots" off by 1608 default, which means "zfs list" does not show snapshots, 1609 and is the same as Solaris behavior. 1610 161120081028: 1612 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled. 1613 161420081009: 1615 The uhci, ohci, ehci and slhci USB Host controller drivers have 1616 been put into separate modules. If you load the usb module 1617 separately through loader.conf you will need to load the 1618 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0 1619 controller add the following to loader.conf: 1620 1621 uhci_load="YES" 1622 ehci_load="YES" 1623 162420081009: 1625 The ABI used by the PMC toolset has changed. Please keep 1626 userland (libpmc(3)) and the kernel module (hwpmc(4)) in 1627 sync. 1628 162920081009: 1630 atapci kernel module now includes only generic PCI ATA 1631 driver. AHCI driver moved to ataahci kernel module. 1632 All vendor-specific code moved into separate kernel modules: 1633 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, 1634 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, 1635 atamarvell, atamicron, atanational, atanetcell, atanvidia, 1636 atapromise, ataserverworks, atasiliconimage, atasis, atavia 1637 163820080820: 1639 The TTY subsystem of the kernel has been replaced by a new 1640 implementation, which provides better scalability and an 1641 improved driver model. Most common drivers have been migrated to 1642 the new TTY subsystem, while others have not. The following 1643 drivers have not yet been ported to the new TTY layer: 1644 1645 PCI/ISA: 1646 cy, digi, rc, rp, sio 1647 1648 USB: 1649 ubser, ucycom 1650 1651 Line disciplines: 1652 ng_h4, ng_tty, ppp, sl, snp 1653 1654 Adding these drivers to your kernel configuration file shall 1655 cause compilation to fail. 1656 165720080818: 1658 ntpd has been upgraded to 4.2.4p5. 1659 166020080801: 1661 OpenSSH has been upgraded to 5.1p1. 1662 1663 For many years, FreeBSD's version of OpenSSH preferred DSA 1664 over RSA for host and user authentication keys. With this 1665 upgrade, we've switched to the vendor's default of RSA over 1666 DSA. This may cause upgraded clients to warn about unknown 1667 host keys even for previously known hosts. Users should 1668 follow the usual procedure for verifying host keys before 1669 accepting the RSA key. 1670 1671 This can be circumvented by setting the "HostKeyAlgorithms" 1672 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh 1673 command line. 1674 1675 Please note that the sequence of keys offered for 1676 authentication has been changed as well. You may want to 1677 specify IdentityFile in a different order to revert this 1678 behavior. 1679 168020080713: 1681 The sio(4) driver has been removed from the i386 and amd64 1682 kernel configuration files. This means uart(4) is now the 1683 default serial port driver on those platforms as well. 1684 1685 To prevent collisions with the sio(4) driver, the uart(4) driver 1686 uses different names for its device nodes. This means the 1687 onboard serial port will now most likely be called "ttyu0" 1688 instead of "ttyd0". You may need to reconfigure applications to 1689 use the new device names. 1690 1691 When using the serial port as a boot console, be sure to update 1692 /boot/device.hints and /etc/ttys before booting the new kernel. 1693 If you forget to do so, you can still manually specify the hints 1694 at the loader prompt: 1695 1696 set hint.uart.0.at="isa" 1697 set hint.uart.0.port="0x3F8" 1698 set hint.uart.0.flags="0x10" 1699 set hint.uart.0.irq="4" 1700 boot -s 1701 170220080609: 1703 The gpt(8) utility has been removed. Use gpart(8) to partition 1704 disks instead. 1705 170620080603: 1707 The version that Linuxulator emulates was changed from 2.4.2 1708 to 2.6.16. If you experience any problems with Linux binaries 1709 please try to set sysctl compat.linux.osrelease to 2.4.2 and 1710 if it fixes the problem contact emulation mailing list. 1711 171220080525: 1713 ISDN4BSD (I4B) was removed from the src tree. You may need to 1714 update a your kernel configuration and remove relevant entries. 1715 171620080509: 1717 I have checked in code to support multiple routing tables. 1718 See the man pages setfib(1) and setfib(2). 1719 This is a hopefully backwards compatible version, 1720 but to make use of it you need to compile your kernel 1721 with options ROUTETABLES=2 (or more up to 16). 1722 172320080420: 1724 The 802.11 wireless support was redone to enable multi-bss 1725 operation on devices that are capable. The underlying device 1726 is no longer used directly but instead wlanX devices are 1727 cloned with ifconfig. This requires changes to rc.conf files. 1728 For example, change: 1729 ifconfig_ath0="WPA DHCP" 1730 to 1731 wlans_ath0=wlan0 1732 ifconfig_wlan0="WPA DHCP" 1733 see rc.conf(5) for more details. In addition, mergemaster of 1734 /etc/rc.d is highly recommended. Simultaneous update of userland 1735 and kernel wouldn't hurt either. 1736 1737 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta 1738 modules were merged into the base wlan module. All references 1739 to these modules (e.g. in kernel config files) must be removed. 1740 174120080408: 1742 psm(4) has gained write(2) support in native operation level. 1743 Arbitrary commands can be written to /dev/psm%d and status can 1744 be read back from it. Therefore, an application is responsible 1745 for status validation and error recovery. It is a no-op in 1746 other operation levels. 1747 174820080312: 1749 Support for KSE threading has been removed from the kernel. To 1750 run legacy applications linked against KSE libmap.conf may 1751 be used. The following libmap.conf may be used to ensure 1752 compatibility with any prior release: 1753 1754 libpthread.so.1 libthr.so.1 1755 libpthread.so.2 libthr.so.2 1756 libkse.so.3 libthr.so.3 1757 175820080301: 1759 The layout of struct vmspace has changed. This affects libkvm 1760 and any executables that link against libkvm and use the 1761 kvm_getprocs() function. In particular, but not exclusively, 1762 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1). 1763 The effects are minimal, but it's advisable to upgrade world 1764 nonetheless. 1765 176620080229: 1767 The latest em driver no longer has support in it for the 1768 82575 adapter, this is now moved to the igb driver. The 1769 split was done to make new features that are incompatible 1770 with older hardware easier to do. 1771 177220080220: 1773 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4), 1774 likewise the kernel option is now GEOM_LINUX_LVM. 1775 177620080211: 1777 The default NFS mount mode has changed from UDP to TCP for 1778 increased reliability. If you rely on (insecurely) NFS 1779 mounting across a firewall you may need to update your 1780 firewall rules. 1781 178220080208: 1783 Belatedly note the addition of m_collapse for compacting 1784 mbuf chains. 1785 178620080126: 1787 The fts(3) structures have been changed to use adequate 1788 integer types for their members and so to be able to cope 1789 with huge file trees. The old fts(3) ABI is preserved 1790 through symbol versioning in libc, so third-party binaries 1791 using fts(3) should still work, although they will not take 1792 advantage of the extended types. At the same time, some 1793 third-party software might fail to build after this change 1794 due to unportable assumptions made in its source code about 1795 fts(3) structure members. Such software should be fixed 1796 by its vendor or, in the worst case, in the ports tree. 1797 FreeBSD_version 800015 marks this change for the unlikely 1798 case that a portable fix is impossible. 1799 180020080123: 1801 To upgrade to -current after this date, you must be running 1802 FreeBSD not older than 6.0-RELEASE. Upgrading to -current 1803 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems. 1804 180520071128: 1806 The ADAPTIVE_GIANT kernel option has been retired because its 1807 functionality is the default now. 1808 180920071118: 1810 The AT keyboard emulation of sunkbd(4) has been turned on 1811 by default. In order to make the special symbols of the Sun 1812 keyboards driven by sunkbd(4) work under X these now have 1813 to be configured the same way as Sun USB keyboards driven 1814 by ukbd(4) (which also does AT keyboard emulation), f.e.: 1815 1816 Option "XkbLayout" "us" 1817 Option "XkbRules" "xorg" 1818 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us" 1819 182020071024: 1821 It has been decided that it is desirable to provide ABI 1822 backwards compatibility to the FreeBSD 4/5/6 versions of the 1823 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was 1824 broken with the introduction of PCI domain support (see the 1825 20070930 entry). Unfortunately, this required the ABI of 1826 PCIOCGETCONF to be broken again in order to be able to 1827 provide backwards compatibility to the old version of that 1828 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled 1829 again. As for prominent ports this affects neither pciutils 1830 nor xorg-server this time, the hal port needs to be rebuilt 1831 however. 1832 183320071020: 1834 The misnamed kthread_create() and friends have been renamed 1835 to kproc_create() etc. Many of the callers already 1836 used kproc_start().. 1837 I will return kthread_create() and friends in a while 1838 with implementations that actually create threads, not procs. 1839 Renaming corresponds with version 800002. 1840 184120071010: 1842 RELENG_7 branched. 1843 1844COMMON ITEMS: 1845 1846 General Notes 1847 ------------- 1848 Avoid using make -j when upgrading. While generally safe, there are 1849 sometimes problems using -j to upgrade. If your upgrade fails with 1850 -j, please try again without -j. From time to time in the past there 1851 have been problems using -j with buildworld and/or installworld. This 1852 is especially true when upgrading between "distant" versions (eg one 1853 that cross a major release boundary or several minor releases, or when 1854 several months have passed on the -current branch). 1855 1856 Sometimes, obscure build problems are the result of environment 1857 poisoning. This can happen because the make utility reads its 1858 environment when searching for values for global variables. To run 1859 your build attempts in an "environmental clean room", prefix all make 1860 commands with 'env -i '. See the env(1) manual page for more details. 1861 1862 When upgrading from one major version to another it is generally best 1863 to upgrade to the latest code in the currently installed branch first, 1864 then do an upgrade to the new branch. This is the best-tested upgrade 1865 path, and has the highest probability of being successful. Please try 1866 this approach before reporting problems with a major version upgrade. 1867 1868 When upgrading a live system, having a root shell around before 1869 installing anything can help undo problems. Not having a root shell 1870 around can lead to problems if pam has changed too much from your 1871 starting point to allow continued authentication after the upgrade. 1872 1873 ZFS notes 1874 --------- 1875 When upgrading the boot ZFS pool to a new version, always follow 1876 these two steps: 1877 1878 1.) recompile and reinstall the ZFS boot loader and boot block 1879 (this is part of "make buildworld" and "make installworld") 1880 1881 2.) update the ZFS boot block on your boot drive 1882 1883 The following example updates the ZFS boot block on the first 1884 partition (freebsd-boot) of a GPT partitioned drive ad0: 1885 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0" 1886 1887 Non-boot pools do not need these updates. 1888 1889 To build a kernel 1890 ----------------- 1891 If you are updating from a prior version of FreeBSD (even one just 1892 a few days old), you should follow this procedure. It is the most 1893 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld, 1894 1895 make kernel-toolchain 1896 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE 1897 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE 1898 1899 To test a kernel once 1900 --------------------- 1901 If you just want to boot a kernel once (because you are not sure 1902 if it works, or if you want to boot a known bad kernel to provide 1903 debugging information) run 1904 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel 1905 nextboot -k testkernel 1906 1907 To just build a kernel when you know that it won't mess you up 1908 -------------------------------------------------------------- 1909 This assumes you are already running a CURRENT system. Replace 1910 ${arch} with the architecture of your machine (e.g. "i386", 1911 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc). 1912 1913 cd src/sys/${arch}/conf 1914 config KERNEL_NAME_HERE 1915 cd ../compile/KERNEL_NAME_HERE 1916 make depend 1917 make 1918 make install 1919 1920 If this fails, go to the "To build a kernel" section. 1921 1922 To rebuild everything and install it on the current system. 1923 ----------------------------------------------------------- 1924 # Note: sometimes if you are running current you gotta do more than 1925 # is listed here if you are upgrading from a really old current. 1926 1927 <make sure you have good level 0 dumps> 1928 make buildworld 1929 make kernel KERNCONF=YOUR_KERNEL_HERE 1930 [1] 1931 <reboot in single user> [3] 1932 mergemaster -p [5] 1933 make installworld 1934 mergemaster -i [4] 1935 make delete-old [6] 1936 <reboot> 1937 1938 To cross-install current onto a separate partition 1939 -------------------------------------------------- 1940 # In this approach we use a separate partition to hold 1941 # current's root, 'usr', and 'var' directories. A partition 1942 # holding "/", "/usr" and "/var" should be about 2GB in 1943 # size. 1944 1945 <make sure you have good level 0 dumps> 1946 <boot into -stable> 1947 make buildworld 1948 make buildkernel KERNCONF=YOUR_KERNEL_HERE 1949 <maybe newfs current's root partition> 1950 <mount current's root partition on directory ${CURRENT_ROOT}> 1951 make installworld DESTDIR=${CURRENT_ROOT} 1952 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd 1953 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT} 1954 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd 1955 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition> 1956 <reboot into current> 1957 <do a "native" rebuild/install as described in the previous section> 1958 <maybe install compatibility libraries from ports/misc/compat*> 1959 <reboot> 1960 1961 1962 To upgrade in-place from stable to current 1963 ---------------------------------------------- 1964 <make sure you have good level 0 dumps> 1965 make buildworld [9] 1966 make kernel KERNCONF=YOUR_KERNEL_HERE [8] 1967 [1] 1968 <reboot in single user> [3] 1969 mergemaster -p [5] 1970 make installworld 1971 mergemaster -i [4] 1972 make delete-old [6] 1973 <reboot> 1974 1975 Make sure that you've read the UPDATING file to understand the 1976 tweaks to various things you need. At this point in the life 1977 cycle of current, things change often and you are on your own 1978 to cope. The defaults can also change, so please read ALL of 1979 the UPDATING entries. 1980 1981 Also, if you are tracking -current, you must be subscribed to 1982 freebsd-current@freebsd.org. Make sure that before you update 1983 your sources that you have read and understood all the recent 1984 messages there. If in doubt, please track -stable which has 1985 much fewer pitfalls. 1986 1987 [1] If you have third party modules, such as vmware, you 1988 should disable them at this point so they don't crash your 1989 system on reboot. 1990 1991 [3] From the bootblocks, boot -s, and then do 1992 fsck -p 1993 mount -u / 1994 mount -a 1995 cd src 1996 adjkerntz -i # if CMOS is wall time 1997 Also, when doing a major release upgrade, it is required that 1998 you boot into single user mode to do the installworld. 1999 2000 [4] Note: This step is non-optional. Failure to do this step 2001 can result in a significant reduction in the functionality of the 2002 system. Attempting to do it by hand is not recommended and those 2003 that pursue this avenue should read this file carefully, as well 2004 as the archives of freebsd-current and freebsd-hackers mailing lists 2005 for potential gotchas. The -U option is also useful to consider. 2006 See mergemaster(8) for more information. 2007 2008 [5] Usually this step is a noop. However, from time to time 2009 you may need to do this if you get unknown user in the following 2010 step. It never hurts to do it all the time. You may need to 2011 install a new mergemaster (cd src/usr.sbin/mergemaster && make 2012 install) after the buildworld before this step if you last updated 2013 from current before 20130425 or from -stable before 20130430. 2014 2015 [6] This only deletes old files and directories. Old libraries 2016 can be deleted by "make delete-old-libs", but you have to make 2017 sure that no program is using those libraries anymore. 2018 2019 [8] In order to have a kernel that can run the 4.x binaries needed to 2020 do an installworld, you must include the COMPAT_FREEBSD4 option in 2021 your kernel. Failure to do so may leave you with a system that is 2022 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is 2023 required to run the 5.x binaries on more recent kernels. And so on 2024 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. 2025 2026 Make sure that you merge any new devices from GENERIC since the 2027 last time you updated your kernel config file. 2028 2029 [9] When checking out sources, you must include the -P flag to have 2030 cvs prune empty directories. 2031 2032 If CPUTYPE is defined in your /etc/make.conf, make sure to use the 2033 "?=" instead of the "=" assignment operator, so that buildworld can 2034 override the CPUTYPE if it needs to. 2035 2036 MAKEOBJDIRPREFIX must be defined in an environment variable, and 2037 not on the command line, or in /etc/make.conf. buildworld will 2038 warn if it is improperly defined. 2039FORMAT: 2040 2041This file contains a list, in reverse chronological order, of major 2042breakages in tracking -current. It is not guaranteed to be a complete 2043list of such breakages, and only contains entries since October 10, 2007. 2044If you need to see UPDATING entries from before that date, you will need 2045to fetch an UPDATING file from an older FreeBSD release. 2046 2047Copyright information: 2048 2049Copyright 1998-2009 M. Warner Losh. All Rights Reserved. 2050 2051Redistribution, publication, translation and use, with or without 2052modification, in full or in part, in any form or format of this 2053document are permitted without further permission from the author. 2054 2055THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR 2056IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 2057WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2058DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT, 2059INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2060(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2061SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2062HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2063STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2064IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2065POSSIBILITY OF SUCH DAMAGE. 2066 2067Contact Warner Losh if you have any questions about your use of 2068this document. 2069 2070$FreeBSD: stable/10/UPDATING 262720 2014-03-03 23:30:54Z delphij $ 2071