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UPDATING
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Updating Information for FreeBSD current users
This file is maintained and copyrighted by M. Warner Losh
<[email protected]>. See end of file for further details. For commonly
done items, please see the COMMON ITEMS: section later in the file.
Items affecting the ports and packages system can be found in
/usr/ports/UPDATING. Please read that file before running
portupgrade.
NOTE TO PEOPLE WHO THINK THAT FreeBSD 8.x IS SLOW ON IA64 OR SUN4V:
For ia64 the INVARIANTS and INVARIANT_SUPPORT kernel options
were left in the GENERIC kernel because the kernel does not
work properly without them. For sun4v all of the normal kernel
debugging tools present in HEAD were left in place because
sun4v support still needs work to become production ready.
20091125:
8.0-RELEASE.
20090929:
802.11s D3.03 support was committed. This is incompatible with
the previous code, which was based on D3.0.
20090915:
ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
mount(8) and -a option for df(1) to see them.
20090813:
Remove the option STOP_NMI. The default action is now to use NMI
only for KDB via the newly introduced function stop_cpus_hard()
and maintain stop_cpus() to just use a normal IPI_STOP on ia32
and amd64.
20090803:
RELENG_8 branched.
20090719:
Bump the shared library version numbers for all libraries that
do not use symbol versioning as part of the 8.0-RELEASE cycle.
Bump __FreeBSD_version to 800105.
20090714:
Due to changes in the implementation of virtual network stack
support, all network-related kernel modules must be recompiled.
As this change breaks the ABI, bump __FreeBSD_version to 800104.
20090713:
The TOE interface to the TCP syncache has been modified to remove struct
tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack. The
cxgb driver is the only TOE consumer affected by this change, and needs
to be recompiled along with the kernel. As this change breaks the ABI,
bump __FreeBSD_version to 800103.
20090712:
Padding has been added to struct tcpcb, sackhint and tcpstat in
<netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
maintainig the ABI. However, this change breaks the ABI, so bump
__FreeBSD_version to 800102. User space tools that rely on the size of
any of these structs (e.g. sockstat) need to be recompiled.
20090630:
The NFS_LEGACYRPC option has been removed along with the old
kernel RPC implementation that this option selected. Kernel
configurations may need to be adjusted.
20090629:
The network interface device nodes at /dev/net/<interface> have
been removed. All ioctl operations can be performed the normal
way using routing sockets. The kqueue functionality can
generally be replaced with routing sockets.
20090628:
The documentation from the FreeBSD Documentation Project
(Handbook, FAQ, etc.) is now installed via packages by
sysinstall(8) and under the /usr/local/share/doc/freebsd
directory instead of /usr/share/doc.
20090624:
The ABI of various structures related to the SYSV IPC API have
been changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43
kernel options now all require COMPAT_FREEBSD7.
Bump __FreeBSD_version to 800100.
20090622:
Layout of struct vnet has changed as routing related variables
were moved to their own Vimage module. Modules need to be
recompiled. Bump __FreeBSD_version to 800099.
20090619:
NGROUPS_MAX and NGROUPS have been increased from 16 to 1023
and 1024 respectively. As long as no more than 16 groups per
process are used, no changes should be visible. When more
than 16 groups are used, old binaries may fail if they call
getgroups() or getgrouplist() with statically sized storage.
Recompiling will work around this, but applications should be
modified to use dynamically allocated storage for group arrays
as POSIX.1-2008 does not cap an implementation's number of
supported groups at NGROUPS_MAX+1 as previous versions did.
NFS and portalfs mounts may also be affected as the list of
groups is truncated to 16. Users of NFS who use more than 16
groups, should take care that negative group permissions are not
used on the exported file systems as they will not be reliable
unless a GSSAPI based authentication method is used.
20090616:
The compiling option ADAPTIVE_LOCKMGRS has been introduced.
This option compiles in the support for adaptive spinning for lockmgrs
which want to enable it. The lockinit() function now accepts the
flag LK_ADAPTIVE in order to make the lock object subject to
adaptive spinning when both held in write and read mode.
20090613:
The layout of the structure returned by IEEE80211_IOC_STA_INFO
has changed. User applications that use this ioctl need to be
rebuilt.
20090611:
The layout of struct thread has changed. Kernel and modules
need to be rebuilt.
20090608:
The layout of structs ifnet, domain, protosw and vnet_net has
changed. Kernel modules need to be rebuilt.
Bump __FreeBSD_version to 800097.
20090602:
window(1) has been removed from the base system. It can now be
installed from ports. The port is called misc/window.
20090601:
The way we are storing and accessing `routing table' entries
has changed. Programs reading the FIB, like netstat, need to
be re-compiled.
20090601:
A new netisr implementation has been added for FreeBSD 8. Network
file system modules, such as igmp, ipdivert, and others, should be
rebuilt.
Bump __FreeBSD_version to 800096.
20090530:
Remove the tunable/sysctl debug.mpsafevfs as its initial purpose
is no more valid.
20090530:
Add VOP_ACCESSX(9). File system modules need to be rebuilt.
Bump __FreeBSD_version to 800094.
20090529:
Add mnt_xflag field to 'struct mount'. File system modules
need to be rebuilt.
Bump __FreeBSD_version to 800093.
20090528:
The compiling option ADAPTIVE_SX has been retired while it has been
introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
The KPI for sx_init_flags() changes as accepting flags:
SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag
has been introduced in order to handle the reversed logic.
Bump __FreeBSD_version to 800092.
20090527:
Add support for hierarchical jails. Remove global securelevel.
Bump __FreeBSD_version to 800091.
20090523:
The layout of struct vnet_net has changed, therefore modules
need to be rebuilt.
Bump __FreeBSD_version to 800090.
20090523:
The newly imported zic(8) produces a new format in the
output. Please run tzsetup(8) to install the newly created
data to /etc/localtime.
20090520:
The sysctl tree for the usb stack has renamed from hw.usb2.* to
hw.usb.* and is now consistent again with previous releases.
20090520:
802.11 monitor mode support was revised and driver api's
were changed. Drivers dependent on net80211 now support
DLT_IEEE802_11_RADIO instead of DLT_IEEE802_11. No
user-visible data structures were changed but applications
that use DLT_IEEE802_11 may require changes.
Bump __FreeBSD_version to 800088.
20090430:
The layout of the following structs has changed: sysctl_oid,
socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
panics may be experienced. World rebuild is required for
correctly checking networking state from userland.
Bump __FreeBSD_version to 800085.
20090429:
MLDv2 and Source-Specific Multicast (SSM) have been merged
to the IPv6 stack. VIMAGE hooks are in but not yet used.
The implementation of SSM within FreeBSD's IPv6 stack closely
follows the IPv4 implementation.
For kernel developers:
* The most important changes are that the ip6_output() and
ip6_input() paths no longer take the IN6_MULTI_LOCK,
and this lock has been downgraded to a non-recursive mutex.
* As with the changes to the IPv4 stack to support SSM, filtering
of inbound multicast traffic must now be performed by transport
protocols within the IPv6 stack. This does not apply to TCP and
SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
* The KPIs used by IPv6 multicast are similar to those used by
the IPv4 stack, with the following differences:
* im6o_mc_filter() is analogous to imo_multicast_filter().
* The legacy KAME entry points in6_joingroup and in6_leavegroup()
are shimmed to in6_mc_join() and in6_mc_leave() respectively.
* IN6_LOOKUP_MULTI() has been deprecated and removed.
* IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
for MLDv1 have an additional 'timer' argument which is used to
jitter the initial membership report for the solicited-node
multicast membership on-link.
* This is not strictly needed for MLDv2, which already jitters
its report transmissions. However, the 'timer' argument is
preserved in case MLDv1 is active on the interface.
* The KAME linked-list based IPv6 membership implementation has
been refactored to use a vector similar to that used by the IPv4
stack.
Code which maintains a list of its own multicast memberships
internally, e.g. carp, has been updated to reflect the new
semantics.
* There is a known Lock Order Reversal (LOR) due to in6_setscope()
acquiring the IF_AFDATA_LOCK and being called within ip6_output().
Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
implementation constraint which needs to be addressed in HEAD.
For application developers:
* The changes are broadly similar to those made for the IPv4
stack.
* The use of IPv4 and IPv6 multicast socket options on the same
socket, using mapped addresses, HAS NOT been tested or supported.
* There are a number of issues with the implementation of various
IPv6 multicast APIs which need to be resolved in the API surface
before the implementation is fully compatible with KAME userland
use, and these are mostly to do with interface index treatment.
* The literature available discusses the use of either the delta / ASM
API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
using setsourcefilter(3)/getsourcefilter(3). For more information
please refer to RFC 3768, 'Socket Interface Extensions for
Multicast Source Filters'.
* Applications which use the published RFC 3678 APIs should be fine.
For systems administrators:
* The mtest(8) utility has been refactored to support IPv6, in
addition to IPv4. Interface addresses are no longer accepted
as arguments, their names must be used instead. The utility
will map the interface name to its first IPv4 address as
returned by getifaddrs(3).
* The ifmcstat(8) utility has also been updated to print the MLDv2
endpoint state and source filter lists via sysctl(3).
* The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
loopback of IPv6 multicast datagrams by default; it defaults to 1
to preserve the existing behaviour. Disabling multicast loopback is
recommended for optimal system performance.
* The IPv6 MROUTING code has been changed to examine this sysctl
instead of attempting to perform a group lookup before looping
back forwarded datagrams.
Bump __FreeBSD_version to 800084.
20090422:
Implement low-level Bluetooth HCI API.
Bump __FreeBSD_version to 800083.
20090419:
The layout of struct malloc_type, used by modules to register new
memory allocation types, has changed. Most modules will need to
be rebuilt or panics may be experienced.
Bump __FreeBSD_version to 800081.
20090415:
Anticipate overflowing inp_flags - add inp_flags2.
This changes most offsets in inpcb, so checking v4 connection
state will require a world rebuild.
Bump __FreeBSD_version to 800080.
20090415:
Add an llentry to struct route and struct route_in6. Modules
embedding a struct route will need to be recompiled.
Bump __FreeBSD_version to 800079.
20090414:
The size of rt_metrics_lite and by extension rtentry has changed.
Networking administration apps will need to be recompiled.
The route command now supports show as an alias for get, weighting
of routes, sticky and nostick flags to alter the behavior of stateful
load balancing.
Bump __FreeBSD_version to 800078.
20090408:
Do not use Giant for kbdmux(4) locking. This is wrong and
apparently causing more problems than it solves. This will
re-open the issue where interrupt handlers may race with
kbdmux(4) in polling mode. Typical symptoms include (but
not limited to) duplicated and/or missing characters when
low level console functions (such as gets) are used while
interrupts are enabled (for example geli password prompt,
mountroot prompt etc.). Disabling kbdmux(4) may help.
20090407:
The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
kernel modules referencing any of the above need to be recompiled.
Bump __FreeBSD_version to 800075.
20090320:
GEOM_PART has become the default partition slicer for storage devices,
replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
introduces some changes:
MSDOS/EBR: the devices created from MSDOS extended partition entries
(EBR) can be named differently than with GEOM_MBR and are now symlinks
to devices with offset-based names. fstabs may need to be modified.
BSD: the "geometry does not match label" warning is harmless in most
cases but it points to problems in file system misalignment with
disk geometry. The "c" partition is now implicit, covers the whole
top-level drive and cannot be (mis)used by users.
General: Kernel dumps are now not allowed to be written to devices
whose partition types indicate they are meant to be used for file
systems (or, in case of MSDOS partitions, as something else than
the "386BSD" type).
Most of these changes date approximately from 200812.
20090319:
The uscanner(4) driver has been removed from the kernel. This follows
Linux removing theirs in 2.6 and making libusb the default interface
(supported by sane).
20090319:
The multicast forwarding code has been cleaned up. netstat(1)
only relies on KVM now for printing bandwidth upcall meters.
The IPv4 and IPv6 modules are split into ip_mroute_mod and
ip6_mroute_mod respectively. The config(5) options for statically
compiling this code remain the same, i.e. 'options MROUTING'.
20090315:
Support for the IFF_NEEDSGIANT network interface flag has been
removed, which means that non-MPSAFE network device drivers are no
longer supported. In particular, if_ar, if_sr, and network device
drivers from the old (legacy) USB stack can no longer be built or
used.
20090313:
POSIX.1 Native Language Support (NLS) has been enabled in libc and
a bunch of new language catalog files have also been added.
This means that some common libc messages are now localized and
they depend on the LC_MESSAGES environmental variable.
20090313:
The k8temp(4) driver has been renamed to amdtemp(4) since
support for K10 and K11 CPU families was added.
20090309:
IGMPv3 and Source-Specific Multicast (SSM) have been merged
to the IPv4 stack. VIMAGE hooks are in but not yet used.
For kernel developers, the most important changes are that the
ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
and this lock has been downgraded to a non-recursive mutex.
Transport protocols (UDP, Raw IP) are now responsible for filtering
inbound multicast traffic according to group membership and source
filters. The imo_multicast_filter() KPI exists for this purpose.
Transports which do not use multicast (SCTP, TCP) already reject
multicast by default. Forwarding and receive performance may improve
as a mutex acquisition is no longer needed in the ip_input()
low-level input path. in_addmulti() and in_delmulti() are shimmed
to new KPIs which exist to support SSM in-kernel.
For application developers, it is recommended that loopback of
multicast datagrams be disabled for best performance, as this
will still cause the lock to be taken for each looped-back
datagram transmission. The net.inet.ip.mcast.loop sysctl may
be tuned to 0 to disable loopback by default; it defaults to 1
to preserve the existing behaviour.
For systems administrators, to obtain best performance with
multicast reception and multiple groups, it is always recommended
that a card with a suitably precise hash filter is used. Hash
collisions will still result in the lock being taken within the
transport protocol input path to check group membership.
If deploying FreeBSD in an environment with IGMP snooping switches,
it is recommended that the net.inet.igmp.sendlocal sysctl remain
enabled; this forces 224.0.0.0/24 group membership to be announced
via IGMP.
The size of 'struct igmpstat' has changed; netstat needs to be
recompiled to reflect this.
Bump __FreeBSD_version to 800070.
20090309:
libusb20.so.1 is now installed as libusb.so.1 and the ports system
updated to use it. This requires a buildworld/installworld in order to
update the library and dependencies (usbconfig, etc). Its advisable to
rebuild all ports which uses libusb. More specific directions are given
in the ports collection UPDATING file. Any /etc/libmap.conf entries for
libusb are no longer required and can be removed.
20090302:
A workaround is committed to allow the creation of System V shared
memory segment of size > 2 GB on the 64-bit architectures.
Due to a limitation of the existing ABI, the shm_segsz member
of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
wrong for large segments. Note that limits must be explicitly
raised to allow such segments to be created.
20090301:
The layout of struct ifnet has changed, requiring a rebuild of all
network device driver modules.
20090227:
The /dev handling for the new USB stack has changed, a
buildworld/installworld is required for libusb20.
20090223:
The new USB2 stack has now been permanently moved in and all kernel and
module names reverted to their previous values (eg, usb, ehci, ohci,
ums, ...). The old usb stack can be compiled in by prefixing the name
with the letter 'o', the old usb modules have been removed.
Updating entry 20090216 for xorg and 20090215 for libmap may still
apply.
20090217:
The rc.conf(5) option if_up_delay has been renamed to
defaultroute_delay to better reflect its purpose. If you have
customized this setting in /etc/rc.conf you need to update it to
use the new name.
20090216:
xorg 7.4 wants to configure its input devices via hald which does not
yet work with USB2. If the keyboard/mouse does not work in xorg then
add
Option "AllowEmptyInput" "off"
to your ServerLayout section. This will cause X to use the configured
kbd and mouse sections from your xorg.conf.
20090215:
The GENERIC kernels for all architectures now default to the new USB2
stack. No kernel config options or code have been removed so if a
problem arises please report it and optionally revert to the old USB
stack. If you are loading USB kernel modules or have a custom kernel
that includes GENERIC then ensure that usb names are also changed over,
eg uftdi -> usb2_serial_ftdi.
Older programs linked against the ports libusb 0.1 need to be
redirected to the new stack's libusb20. /etc/libmap.conf can
be used for this:
# Map old usb library to new one for usb2 stack
libusb-0.1.so.8 libusb20.so.1
20090203:
The ichsmb(4) driver has been changed to require SMBus slave
addresses be left-justified (xxxxxxx0b) rather than right-justified.
All of the other SMBus controller drivers require left-justified
slave addresses, so this change makes all the drivers provide the
same interface.
20090201:
INET6 statistics (struct ip6stat) was updated.
netstat(1) needs to be recompiled.
20090119:
NTFS has been removed from GENERIC kernel on amd64 to match
GENERIC on i386. Should not cause any issues since mount_ntfs(8)
will load ntfs.ko module automatically when NTFS support is
actually needed, unless ntfs.ko is not installed or security
level prohibits loading kernel modules. If either is the case,
"options NTFS" has to be added into kernel config.
20090115:
TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
800061. User space tools that rely on the size of struct tcpcb in
tcp_var.h (e.g. sockstat) need to be recompiled.
20081225:
ng_tty(4) module updated to match the new TTY subsystem.
Due to API change, user-level applications must be updated.
New API support added to mpd5 CVS and expected to be present
in next mpd5.3 release.
20081219:
With __FreeBSD_version 800060 the makefs tool is part of
the base system (it was a port).
20081216:
The afdata and ifnet locks have been changed from mutexes to
rwlocks, network modules will need to be re-compiled.
20081214:
__FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
The new code reduced struct rtentry{} by 16 bytes on 32-bit
architecture and 40 bytes on 64-bit architecture. The userland
applications "arp" and "ndp" have been updated accordingly.
The output from "netstat -r" shows only routing entries and
none of the L2 information.
20081130:
__FreeBSD_version 800057 marks the switchover from the
binary ath hal to source code. Users must add the line:
options AH_SUPPORT_AR5416
to their kernel config files when specifying:
device ath_hal
The ath_hal module no longer exists; the code is now compiled
together with the driver in the ath module. It is now
possible to tailor chip support (i.e. reduce the set of chips
and thereby the code size); consult ath_hal(4) for details.
20081121:
__FreeBSD_version 800054 adds memory barriers to
<machine/atomic.h>, new interfaces to ifnet to facilitate
multiple hardware transmit queues for cards that support
them, and a lock-less ring-buffer implementation to
enable drivers to more efficiently manage queueing of
packets.
20081117:
A new version of ZFS (version 13) has been merged to -HEAD.
This version has zpool attribute "listsnapshots" off by
default, which means "zfs list" does not show snapshots,
and is the same as Solaris behavior.
20081028:
dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
20081009:
The uhci, ohci, ehci and slhci USB Host controller drivers have
been put into separate modules. If you load the usb module
separately through loader.conf you will need to load the
appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
controller add the following to loader.conf:
uhci_load="YES"
ehci_load="YES"
20081009:
The ABI used by the PMC toolset has changed. Please keep
userland (libpmc(3)) and the kernel module (hwpmc(4)) in
sync.
20081009:
atapci kernel module now includes only generic PCI ATA
driver. AHCI driver moved to ataahci kernel module.
All vendor-specific code moved into separate kernel modules:
ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
atamarvell, atamicron, atanational, atanetcell, atanvidia,
atapromise, ataserverworks, atasiliconimage, atasis, atavia
20080820:
The TTY subsystem of the kernel has been replaced by a new
implementation, which provides better scalability and an
improved driver model. Most common drivers have been migrated to
the new TTY subsystem, while others have not. The following
drivers have not yet been ported to the new TTY layer:
PCI/ISA:
cy, digi, rc, rp, sio
USB:
ubser, ucycom
Line disciplines:
ng_h4, ng_tty, ppp, sl, snp
Adding these drivers to your kernel configuration file shall
cause compilation to fail.
20080818:
ntpd has been upgraded to 4.2.4p5.
20080801:
OpenSSH has been upgraded to 5.1p1.
For many years, FreeBSD's version of OpenSSH preferred DSA
over RSA for host and user authentication keys. With this
upgrade, we've switched to the vendor's default of RSA over
DSA. This may cause upgraded clients to warn about unknown
host keys even for previously known hosts. Users should
follow the usual procedure for verifying host keys before
accepting the RSA key.
This can be circumvented by setting the "HostKeyAlgorithms"
option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
command line.
Please note that the sequence of keys offered for
authentication has been changed as well. You may want to
specify IdentityFile in a different order to revert this
behavior.
20080713:
The sio(4) driver has been removed from the i386 and amd64
kernel configuration files. This means uart(4) is now the
default serial port driver on those platforms as well.
To prevent collisions with the sio(4) driver, the uart(4) driver
uses different names for its device nodes. This means the
onboard serial port will now most likely be called "ttyu0"
instead of "ttyd0". You may need to reconfigure applications to
use the new device names.
When using the serial port as a boot console, be sure to update
/boot/device.hints and /etc/ttys before booting the new kernel.
If you forget to do so, you can still manually specify the hints
at the loader prompt:
set hint.uart.0.at="isa"
set hint.uart.0.port="0x3F8"
set hint.uart.0.flags="0x10"
set hint.uart.0.irq="4"
boot -s
20080609:
The gpt(8) utility has been removed. Use gpart(8) to partition
disks instead.
20080603:
The version that Linuxulator emulates was changed from 2.4.2
to 2.6.16. If you experience any problems with Linux binaries
please try to set sysctl compat.linux.osrelease to 2.4.2 and
if it fixes the problem contact emulation mailing list.
20080525:
ISDN4BSD (I4B) was removed from the src tree. You may need to
update a your kernel configuration and remove relevant entries.
20080509:
I have checked in code to support multiple routing tables.
See the man pages setfib(1) and setfib(2).
This is a hopefully backwards compatible version,
but to make use of it you need to compile your kernel
with options ROUTETABLES=2 (or more up to 16).
20080420:
The 802.11 wireless support was redone to enable multi-bss
operation on devices that are capable. The underlying device
is no longer used directly but instead wlanX devices are
cloned with ifconfig. This requires changes to rc.conf files.
For example, change:
ifconfig_ath0="WPA DHCP"
to
wlans_ath0=wlan0
ifconfig_wlan0="WPA DHCP"
see rc.conf(5) for more details. In addition, mergemaster of
/etc/rc.d is highly recommended. Simultaneous update of userland
and kernel wouldn't hurt either.
As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
modules were merged into the base wlan module. All references
to these modules (e.g. in kernel config files) must be removed.
20080408:
psm(4) has gained write(2) support in native operation level.
Arbitrary commands can be written to /dev/psm%d and status can
be read back from it. Therefore, an application is responsible
for status validation and error recovery. It is a no-op in
other operation levels.
20080312:
Support for KSE threading has been removed from the kernel. To
run legacy applications linked against KSE libmap.conf may
be used. The following libmap.conf may be used to ensure
compatibility with any prior release:
libpthread.so.1 libthr.so.1
libpthread.so.2 libthr.so.2
libkse.so.3 libthr.so.3
20080301:
The layout of struct vmspace has changed. This affects libkvm
and any executables that link against libkvm and use the
kvm_getprocs() function. In particular, but not exclusively,
it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
The effects are minimal, but it's advisable to upgrade world
nonetheless.
20080229:
The latest em driver no longer has support in it for the
82575 adapter, this is now moved to the igb driver. The
split was done to make new features that are incompatible
with older hardware easier to do.
20080220:
The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
likewise the kernel option is now GEOM_LINUX_LVM.
20080211:
The default NFS mount mode has changed from UDP to TCP for
increased reliability. If you rely on (insecurely) NFS
mounting across a firewall you may need to update your
firewall rules.
20080208:
Belatedly note the addition of m_collapse for compacting
mbuf chains.
20080126:
The fts(3) structures have been changed to use adequate
integer types for their members and so to be able to cope
with huge file trees. The old fts(3) ABI is preserved
through symbol versioning in libc, so third-party binaries
using fts(3) should still work, although they will not take
advantage of the extended types. At the same time, some
third-party software might fail to build after this change
due to unportable assumptions made in its source code about
fts(3) structure members. Such software should be fixed
by its vendor or, in the worst case, in the ports tree.
FreeBSD_version 800015 marks this change for the unlikely
case that a portable fix is impossible.
20080123:
To upgrade to -current after this date, you must be running
FreeBSD not older than 6.0-RELEASE. Upgrading to -current
from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
20071128:
The ADAPTIVE_GIANT kernel option has been retired because its
functionality is the default now.
20071118:
The AT keyboard emulation of sunkbd(4) has been turned on
by default. In order to make the special symbols of the Sun
keyboards driven by sunkbd(4) work under X these now have
to be configured the same way as Sun USB keyboards driven
by ukbd(4) (which also does AT keyboard emulation), f.e.:
Option "XkbLayout" "us"
Option "XkbRules" "xorg"
Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
20071024:
It has been decided that it is desirable to provide ABI
backwards compatibility to the FreeBSD 4/5/6 versions of the
PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
broken with the introduction of PCI domain support (see the
20070930 entry). Unfortunately, this required the ABI of
PCIOCGETCONF to be broken again in order to be able to
provide backwards compatibility to the old version of that
IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
again. As for prominent ports this affects neither pciutils
nor xorg-server this time, the hal port needs to be rebuilt
however.
20071020:
The misnamed kthread_create() and friends have been renamed
to kproc_create() etc. Many of the callers already
used kproc_start()..
I will return kthread_create() and friends in a while
with implementations that actually create threads, not procs.
Renaming corresponds with version 800002.
20071010:
RELENG_7 branched.
20071009:
Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
WITHOUT_LIBTHR are set.
20070930:
The PCI code has been made aware of PCI domains. This means that
the location strings as used by pciconf(8) etc are now in the
following format: pci<domain>:<bus>:<device>[:<function>]. It
also means that consumers of <sys/pciio.h> potentially need to
be recompiled; this includes the hal and xorg-server ports.
20070928:
The caching daemon (cached) was renamed to nscd. nscd.conf
configuration file should be used instead of cached.conf and
nscd_enable, nscd_pidfile and nscd_flags options should be used
instead of cached_enable, cached_pidfile and cached_flags in
rc.conf.
20070921:
The getfacl(1) utility now prints owning user and group name
instead of owning uid and gid in the three line comment header.
This is the same behavior as getfacl(1) on Solaris and Linux.
20070704:
The new IPsec code is now compiled in using the IPSEC option. The
IPSEC option now requires "device crypto" be defined in your kernel
configuration. The FAST_IPSEC kernel option is now deprecated.
20070702:
The packet filter (pf) code has been updated to OpenBSD 4.1 Please
note the changed syntax - keep state is now on by default. Also
note the fact that ftp-proxy(8) has been changed from bottom up and
has been moved from libexec to usr/sbin. Changes in the ALTQ
handling also affect users of IPFW's ALTQ capabilities.
20070701:
Remove KAME IPsec in favor of FAST_IPSEC, which is now the
only IPsec supported by FreeBSD. The new IPsec stack
supports both IPv4 and IPv6. The kernel option will change
after the code changes have settled in. For now the kernel
option IPSEC is deprecated and FAST_IPSEC is the only option, that
will change after some settling time.
20070701:
The wicontrol(8) utility has been removed from the base system. wi(4)
cards should be configured using ifconfig(8), see the man page for more
information.
20070612:
The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
instead of the nve(4) driver. Please update your configuration
accordingly.
20070612:
By default, /etc/rc.d/sendmail no longer rebuilds the aliases
database if it is missing or older than the aliases file. If
desired, set the new rc.conf option sendmail_rebuild_aliases
to "YES" to restore that functionality.
20070612:
The IPv4 multicast socket code has been considerably modified, and
moved to the file sys/netinet/in_mcast.c. Initial support for the
RFC 3678 Source-Specific Multicast Socket API has been added to
the IPv4 network stack.
Strict multicast and broadcast reception is now the default for
UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
has now been removed.
The RFC 1724 hack for interface selection has been removed; the use
of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
been added to replace it. Consumers such as routed will soon be
updated to reflect this.
These changes affect users who are running routed(8) or rdisc(8)
from the FreeBSD base system on point-to-point or unnumbered
interfaces.
20070610:
The net80211 layer has changed significantly and all wireless
drivers that depend on it need to be recompiled. Further these
changes require that any program that interacts with the wireless
support in the kernel be recompiled; this includes: ifconfig,
wpa_supplicant, hostapd, and wlanstats. Users must also, for
the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
if they use modules for wireless support. These modules implement
scanning support for station and ap modes, respectively. Failure
to load the appropriate module before marking a wireless interface
up will result in a message to the console and the device not
operating properly.
20070610:
The pam_nologin(8) module ceases to provide an authentication
function and starts providing an account management function.
Consequent changes to /etc/pam.d should be brought in using
mergemaster(8). Third-party files in /usr/local/etc/pam.d may
need manual editing as follows. Locate this line (or similar):
auth required pam_nologin.so no_warn
and change it according to this example:
account required pam_nologin.so no_warn
That is, the first word needs to be changed from "auth" to
"account". The new line can be moved to the account section
within the file for clarity. Not updating pam.conf(5) files
will result in nologin(5) ignored by the respective services.
20070529:
The ether_ioctl() function has been synchronized with ioctl(2)
and ifnet.if_ioctl. Due to that, the size of one of its arguments
has changed on 64-bit architectures. All kernel modules using
ether_ioctl() need to be rebuilt on such architectures.
20070516:
Improved INCLUDE_CONFIG_FILE support has been introduced to the
config(8) utility. In order to take advantage of this new
functionality, you are expected to recompile and install
src/usr.sbin/config. If you don't rebuild config(8), and your
kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
build will be broken because of a missing "kernconfstring"
symbol.
20070513:
Symbol versioning is enabled by default. To disable it, use
option WITHOUT_SYMVER. It is not advisable to attempt to
disable symbol versioning once it is enabled; your installworld
will break because a symbol version-less libc will get installed
before the install tools. As a result, the old install tools,
which previously had symbol dependencies to FBSD_1.0, will fail
because the freshly installed libc will not have them.
The default threading library (providing "libpthread") has been
changed to libthr. If you wish to have libkse as your default,
use option DEFAULT_THREAD_LIB=libkse for the buildworld.
20070423:
The ABI breakage in sendmail(8)'s libmilter has been repaired
so it is no longer necessary to recompile mail filters (aka,
milters). If you recompiled mail filters after the 20070408
note, it is not necessary to recompile them again.
20070417:
The new trunk(4) driver has been renamed to lagg(4) as it better
reflects its purpose. ifconfig will need to be recompiled.
20070408:
sendmail(8) has been updated to version 8.14.1. Mail filters
(aka, milters) compiled against the libmilter included in the
base operating system should be recompiled.
20070302:
Firmwares for ipw(4) and iwi(4) are now included in the base tree.
In order to use them one must agree to the respective LICENSE in
share/doc/legal and define legal.intel_<name>.license_ack=1 via
loader.conf(5) or kenv(1). Make sure to deinstall the now
deprecated modules from the respective firmware ports.
20070228:
The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
were removed from FreeBSD's libc. These originally came from INRIA
IPv6. Nothing in FreeBSD ever used them. They may be regarded as
deprecated in previous releases.
The AF_LINK support for getnameinfo(3) was merged from NetBSD to
replace it as a more portable (and re-entrant) API.
20070224:
To support interrupt filtering a modification to the newbus API
has occurred, ABI was broken and __FreeBSD_version was bumped
to 700031. Please make sure that your kernel and modules are in
sync. For more info:
http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
20070224:
The IPv6 multicast forwarding code may now be loaded into GENERIC
kernels by loading the ip_mroute.ko module. This is built into the
module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
set; see src.conf(5) for more information.
20070214:
The output of netstat -r has changed. Without -n, we now only
print a "network name" without the prefix length if the network
address and mask exactly match a Class A/B/C network, and an entry
exists in the nsswitch "networks" map.
With -n, we print the full unabbreviated CIDR network prefix in
the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
This change is in preparation for changes such as equal-cost
multipath, and to more generally assist operational deployment
of FreeBSD as a modern IPv4 router.
20070210:
PIM has been turned on by default in the IPv4 multicast
routing code. The kernel option 'PIM' has now been removed.
PIM is now built by default if option 'MROUTING' is specified.
It may now be loaded into GENERIC kernels by loading the
ip_mroute.ko module.
20070207:
Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
has been removed. Its functionality may be achieved by explicitly
configuring gif(4) interfaces and using the 'phyint' keyword in
mrouted.conf.
XORP does not support source-routed IPv4 multicast tunnels nor the
integrated IPIP tunneling, therefore it is not affected by this
change. The __FreeBSD_version macro has been bumped to 700030.
20061221:
Support for PCI Message Signalled Interrupts has been
re-enabled in the bge driver, only for those chips which are
believed to support it properly. If there are any problems,
MSI can be disabled completely by setting the
'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
in the loader.