Changes made between OpenBSD versions.

The OpenBSD project was spawned from NetBSD (ie. a member of the 4.4BSD family) and is developed separately. As well as developments by our development group, good changes from the other free operating systems are evaluated and merged into OpenBSD (of course, depending on various factors like developer time for example.) OpenBSD tracks bug reports and source tree changes from the NetBSD and FreeBSD projects fairly closely. Even pieces of code from the Linux projects have been used.

In the early days of OpenBSD, it was possible to be able to say "OpenBSD is NetBSD PLUS MORE STUFF" Now, after substantial work OpenBSD is very much is it's own thing. Too much stuff has been added and fixed. OpenBSD is OpenBSD.

This is a partial list of the major machine independent changes (ie. these are the changes people ask about most often). Port specific changes have also been made, and are sometimes mentioned in the pages for the specific ports if you are interested in for further port-specific details. Many ports have had architecture-specific enhancements relative to NetBSD, but when they do not they certainly have plenty of platform-independent changes, starting with those listed below..

Life for the OpenBSD project begins...

• Many many NetBSD PR's fixed (which NetBSD has not yet fixed)
• New curses library, including libform, libpanel and libmenu.
• a termlib library which understands termcap.db, needed for new curses.
• The FreeBSD ports subsystem was integrated and is usable by you!
• ipfilter for filtering dangerous packets and Network Address Translation for IP masquerading.
• better ELF support
• nlist() that understands ELF, ECOFF, and a.out, allowing non-a.out ports to use kvm utilies
• Verbatim integration of the GNU tools (using a wrapper Makefile)
• All the pieces needed for cross compilation are in the source tree.
• Some LKM support in the tree.
• ATAPI support (should work on all ISA busses)
• new scsi, md5, pkg_* commands
• Numerous security related fixes
• Kerberos and other crypto in the source tree that is exportable
• Solid YP master, server, and client capabilities.
• /dev/*random -- a device driver providing some kinds of random data
• In-kernel update(8) with an adaptive algorithm
• Some ddb improvements and extensions
• Numerous scsi fixes
• ncheck utility for ffs
• /sbin/init now deals with non-existant ttys, no longer spins gettys madly.
• new system calls: rfork(), minherit(), poll().
• select() that can handle any amount of file descriptors.
• kernfs extensions
• ATM support (support for one company's sparc & i386 cards available)
• Boot kernels with "-c" to edit/enable/disable device configuration tables
• pax as tar, gnutar is toast
• using AT&T awk, gawk is toast
• Even more security fixes.
• Accepts FreeBSD MD5 passwords in password maps, soon will be able to generate them too
• Linux ext2fs and BSD4.4 LFS support being worked on.
• Working ATAPI audio support for multiple architectures.
• terminfo database support.
• Fortran in the tree.
• The most secure rdist support anywhere.
• randomized port allocation in bind(), bindresvport(), and rresvport() -- security via unpredictability.
• Protection from the udp spamming and ftp bounce attacks.
• Significantly improved ftp daemon.
• Numerous more security policy and implementation improvements (OpenBSD defaults to installing in a very secure mode)
• zlib (non-GPL'd gzip-compatible library)
• Newest version of pppd.
• _POSIX_SAVED_IDS behaviour with permitted BSD extensions.
• Fixed long-standing vm swap-leak.
• FreeBSD malloc() that uses mmap() and is able to free unused memory.
• Numerous FreeBSD userland fixes and improvements incorporated.
• new rdisc Router Discovery daemon
• generic protection against the bind() takeover problem.
• at -f security fix.
• 20 or so more security fixes
• install now supports -C, -p, and -S flags.
• a real adduser program, which can even be used uninteractively.
• POSIX & C2 requirement; lose setuid/setgid bits if owner/group changed by chown(). This can be turned off with sysctl.
• partial protection against tcp SYN attacks.
• added /etc/fbtab support to login & init.
• RCS version 5.7
• much newer join command (4.4lite2 with other fixes)
• scsi subsystem security fix
• Kerberos is much more silent if not configured
• arc4-based random support in kernel
• ncr53cXXX scsi scripts assembler
• Numerous ftpd improvements and fixes, including multihomed and skey support.
• `lsof'-style features in fstat.
• rudimentary support for ISA Plug-and-Play cards
• Fixed timeout support in RPC library, and also fixed it to support more than FD_SETSIZE file descriptors.
• improved locate command
• a good start at NETIPX support
• vim version 4.5
• gcc 2.7.2.1 (to get closer to native alpha support ar gcc bugs).
• latest version of perl, and a lndir command.
• Even more security fixes.
• cdio command for using CD audio.
• Kernel warns if /dev/console does not exist; nice warning for booting with an unpopulated /dev directory.
• libgnumalloc is gone; our malloc() is better.
• FreeBSD pipe() system call; quite a bit faster.
• Some serial driver support for /dev/cuaXX devices to support transparent out+dial
• DDB can now access symbol tables from LKM modules
• Say goodbye to dump, restore, and mt security holes: They are no longer setuid.
• *Hobbit*'s netcat utility. The crackers use it, so should you.
• New routed from SGI.
• Complete in-tree development for MIPS/Alpha systems (ie. binutils).
• ftp command modified for easily scripted ftp & http downloads.
• And of course... more security related bugfixes... (ie. dump, restore, mt).
• vim is replacing nvi, since nvi does not have a pure BSD license, and vim also works better.
• 16 partitions working on sparc and i386 (yipee!)
• Nice sample files in /etc
• sendmail gecos hole fixed (in a number of ways; other programs in the source tree were also vulnerable.)
• secure multicast tools against possible security problems.
• latest GNU groff, incorporated in a clean wrapperized form.
• mopd for networking booting Digital machines
• less version 2.90
• deal with the SYN bomb problem (denial of service attack) as well known.
• Another kerberos security fix.
• Almost a hundred more security fixes, including /tmp races because of strncpy.
• Compile time option to compile the source tree almost completely dynamic.
• A 7% reduction in size of static binaries.
• FreeBSD's adduser(8) command. Also an rmuser(8) command.
• We have completed security reviews of almost all userland programs and libraries except for the gnu stuff (where, based on preliminary inspection there is poor handling of temp files).
• Working Linux ext2fs.
• Added sudo (which is maintained by one of our developers)
• CTM is now a supported way of obtaining OpenBSD source code.

OpenBSD 2.0 released.

• The NIST Posix test suite became free. As a result we have been correcting numerous problems in the source tree, and expect to be completely POSIX compliant very soon.
• upgrade to CVS version 1.9.
• A number of security fixes to the way coredumping works.
• The /dev/*random devices are now default on all architectures.
• Add stack tracebacks to Arc port's kernel debugger.
• Skey revamped into full OTP (RFC1938) support, including sha1 and md5 support.
• GPL i387 emulator added.
• Crank kvm space on the i386 port, also limit buffer cache useage so that 512MB machines may work (untested :-)
• Numerous fixes to the lpr suite, including security.
• More ftpd raging paranoia security fixes.
• The NIST suite showed numerous errors in libraries and the kernel. Only a few small errors remain now, mostly regarding serial ports.
• In numerous utilities: prefer $LOGNAME, but also accept $USER.
• OLF binary type added. This is like ELF, but includes an OS-dependent tag. elf2olf(1) converts an elf binary to a tagged OLF binary which the kernel can recognize correctly.
• Beware $HOME overflows throughout the source tree.
• Integration of the pmax port.
• Import of ctm.
• Various repairs to the scsi scanner support.
• Numerous more difficult-to-exploit-but-possible-if-someone-really-wanted-to buffer overflows found in system utilities..
• Memory leak paranoia in cron.
• Make login get more consistantly upset about failed logins, and tell user about these failures at the next successful login.
• pdksh version is now 5.2.11
• New bsd.*.mk feature: DEBUG=-g. Try it, you'll like it.
• The Arc port family has a new member: The rPC44 works!
• lpt driver is now bus-independent.
• com driver is now bus-independent.
• Numerous small security fixes again...
• Use pdksh as our /bin/sh. This provides excellent POSIX compliance.
• Prevent generic users from mounting filesystems by default.
• Added -C option to pax/tar. Also made -z support compressed files too.
• Increased compatibility in the pccons driver with BSDi features.
• Imported FreeBSD's calendar.
• GNU gdb works on the mips-based platforms.
• Add FreeBSD md5 diffs to mtree(8). This can be used to implement a tripwire-like system.
• Some YP and bootparamd security changes.
• Hundreds of little fixes all over the place.
• Multiple updates for GNU software
• Add disklabels to the floppy device drivers.
• At boottime, have (*mountroot)() look at the root device's disklabel to determine which filesystem type is to be mounted.
• If disklabel reading code discovers an ISOFS filesystem underlying, spoof a nice disklabel (enough to fool mountroot).
• tcpdump 3.3
• Fix information gathering attack in ping(8).
• Add NetBSD's "route show" implementation, and at the same time fix the new buffer overflows that this provided.
• Fix a few setgroups() related security holes.
• sendmail 8.8.4
• texinfo 3.9
• f77 0.5.19
• Repair some more KerberosIV buffer overflows. Hard to believe this is supposed to be security software.
• Add XCASE/IUCLC/OLCUC/OCRNL/ONOCR/ONLRET tty subsystem flags for backwards compatibility.
• Permit NFS attribute cache to be configured on a per-mount basis.
• Properly split fsck, mount, and newfs into multiple pieces. Use disklabel information if it is available.
• Add disklabels to the vnd device driver.
• Change the games to be run setgid games, not setuid games. This closes a whole slew of fascinating security holes.
• Import of the powerpc port.
• Properly use _POSIX_SAVED_IDS throughout the source tree.
• Permit building of kernels without a.out support.
• ppp 2.3b3
• libcrypt goes away. We do not need this stub library anymore. Do not link against it on OpenBSD, all the pieces you need are in libc.
• new aucat command.
• Fix a fairly nasty security hole in all of the games.
• Support for the hp300 added.
• Upgrade of awk(1), integration of BSD tsort(1), getopt fixes.
• Sendmail upgraded to version 8.8.5.
• Added lchown(2) for compatibility with SVR4 implementations.
• New gnu cpio 2.4.2
• Support lchown(2) in dump(8), cp(1), pax(1), cpio(1), chown(8), and restore(8).
• No buffer lengths in fmt(1).
• various adjtime() corrections inside the kernel.
• Prevent stat() from disclosing inode generation numbers to non-root userland.
• pax in tar mode will understand multiple -v options to generate ls-like output.
• Repair many uses of the SIOCGIFCONF code for machines with an outrageous number of network interfaces.
• More kerberosIV security patches.
• A working fsirand.
• Completely in-tree PowerPC port for non-Apple hardware. This port requires nothing outside the in-tree development environment to build (except mkisofs for building distributions).
• Some ypbind(8) tightening up, includes a method to specify a list of valid servers
• Bug fixed that prevented bufpages/nbuf > 1 setups. This allows large buffer caches even when available kvm space is low, like for i386 & sparc.
• Changed netinet IP_HDRINCL option to require ip_len and ip_off in network byte order. This is a compatibility/portability fix and we expect other BSD systems to eventually follow suit.
• amd (the automounter) is now 64-bit and working on the alpha.
• The Alpha port and all it's utilities now compiles using in-tree versions of all tools. Yipee!
• A SA_SIGINFO implementation for sigaction() and signal handlers. This is a small part of POSIX 1003.1b and permits the signal handler to figure out the exact cause of a signal; such as fault address information for SIGSEGV or more detailed information for SIGFPE.
• config.old(8) has been removed from the tree, as the hp300 port switches to config(8).
• /sbin/dump -a saves you from needing to deal with finicky tape length options (from FreeBSD)
• Added RFC-1812 ICMP unreachable codes to ip_icmp.h, traceroute, and ping.
• Be more careful if some fool decides to enable source routing ;-)
• Support for gzip'd kernels in some bootblocks.
• New wgrisc port for Willowglen embedded r3081-based machine with ISA slots.
• Add cdev and partition support to the ramdisk driver.
• Merge new ftp(1) changes from NetBSD.
• Change mktemp(3) and family to generate more random filenames, yet still as collision free as possible.
• Have libc/rpc save you from yourself if you do enable source routing.
• The hp300 joins many other ports in supporting 16 disk partitions.
• IPF 3.1.7 which includes fully working NAT support (ie. IP masquerading).
• Use lots more XXXX characters in calls to the few remaining mktemp() calls in the source tree. This cuts out a whole class of races.
• Improved NFS filehandle creation.
• Make dd(1) work fine with our 64-bit off_t types, now you can copy very large disks using it.
• add RPC service name generation to netstat -a
• Fix pax & tar to be POSIX compliant.
• Fix a few netinet kernel crash problems.
• Fix so that stack limits which are not a multiple of the pagesize work.
• fix some more memory and file descriptor leaks in libc/rpc
• New scalable BLOWFISH-based crypt algorithm for passwd file entries. It uses a very large strong-random `salt' and the number of rotor runs is configurable. Hence if you have faster machines you can slow the crypt routine down and make harder keys.
• Add support for /etc/passwd.conf which controls the format and strength of passwd entries for the next time a user changes their password. These options can be set per-user.
• Working kadmind for kerberosIV.
• IPSEC package from John Ioannidis and Angelos D. Keromytis.
• cvs 1.9.2
• Fix weak symbol support in ld.
• libg++ pulls in libcurses automatically.
• Replace which(1) with a C program.
• newfs(8) now has an inline fsirand(8) with no noticable speed decrease.
• settimeofday(2) won't roll back the date if securelevel > 0 (from lite2).
• deroff(1) 1.0 from Debian (a Linux).
• BIND 4.9.5-P1.
• Add support for FreeBSD md5 to /etc/passwd.conf.
• Import of the mvme88k kernel port.
• Import of libwrap and tcpd (tcp wrappers).
• Numerous improvements to pax, including full support for cpio and a lot of fixes to tar mode.
• Let fsck and fsirand automatically work on very large filesystems.
• Various fixes to the fsck tools.
• ipsecadm as an initial cut at controlling IPSEC sessions.
• Fix pcmcia on the i386.
• Merged changes from at 2.9 into our own at.
• pccon(1) to control the pccons driver.
• Bye bye tahoe bits.
• noaccesstime option for filesystems (saves batteries on laptops)
• Substantial changes and fixes to the scsi scanner support.
• Support for "secure" YP password maps.
• Various atm fixes.
• The NE2000 if_ed driver now works on the alpha, too.
• ddb improvements for 64 bit machines.
• Fixes to fts(3).
• A few ypbind fixes.
• sysctl kern.osrevision gives OpenBSD date.
• gcc no longer defines -D__NetBSD__, only -D__OpenBSD__ now!
• Implement NOFILE_MAX--hard limit on max descriptors per process.
• Be more careful about modes of lost+found directories.
• New termcap and terminfo database files.
• Change mail.local -H behaviour slightly, and convince mail(1) to use it for correct locking!
• 64 bit clean in.rarpd.
• cvs 1.9.6
• 16 partition support for the alpha port.
• Add ./.message support to ftpd
• Numerous more pax/tar fixes.
• Add md5 & blowfish passwd support to adduser(8).
• Add support for YP v1 to ypserv.
• Fixed some more mktemp races (sigh, will this ever end!)
• More buffer overflows, but none in sensitive programs.
• getnetent() and friends now work a lot more like gethostent().
• Use 10 X characters in many remaining mktemp() calls which are hard to excise.
• Solve a few resolver problems after the recent 4.9.5-P1 integration, not all our fault.
• Fix patch to honour Index lines better.
• A whole bunch of 64 bit fixes in the source tree (hint: alpha).
• Once again, really correct the various source routing pieces of the userland source tree.
• Make real i386 cpu's work again. In case noone noticed, they didn't work for about 5 months. The bug was very hard to find...
• For config(8), if any kernel options get added/deleted/changed since the previous commit, warn that the compile tree needs 'make clean'.
• Use in_addr_t and in_port_t all over the place.
• Correct DEV_BSIZE and lp->d_secsize confusion throughout the source tree. CD9660 is much happier now.
• Fix AFS string-to-key handling in kerberos.
• NAT now gets started from /etc/netstart.
• Various man page fixes.
• For the first time ever, an obj@ populated /usr/src tree compiles cleanly when mounted read-only.
• The df(1) utility now has a human-readable "-h" option.
• Always skip the first 8KB of all swap partitions (hint: disklabels & bootblocks)
• Repair some bugs in mail(1), especially regarding signal handling.
• Support .group entries in /etc/passwd.conf
• PCI aic7860 scsi support improved.
• Support /etc/rc.shutdown from halt(8).
• Support extended partitions in fdisk(8).
• Various fixes to the YP utilities.
• Signal handling fix to crontab(1).
• Unify naming of architecture names between gcc & binutils.
• Some more userland 64 bit fixes.
• Support for PCI NE2000 clones.
• libpthread works on the m68k.
• Significantly improved the unpredictability of the DNS packet id's in the resolver and named.
• newfs_msdos(8) can has enough brains to find the partition size itself.
• Split rc.local, creating rc.securelevel. (Securelevels look like a worse and worse idea every month).
• A bit more man page cleanup starting to happen...
• GNU Groff 1.10 with (improved) Makefile wrapper.
• sleep(3) and usleep(3) now call nanosleep(2) for significantly less overhead.
• The vnd(4) device has a new safer mode of operation called svnd where you can trust a disk-image right after it's unmounted, i.e. cache-coherency.
• Repaired install stuff for most architectures significantly, improving ftp/http installs, single bootable install floppies, and in some cases CDROM booting. Most floppies contain vi, too.
• Support crunch on arc (for bootable installs).
• Added gzip and cdrom support to the sparc and alpha bootblocks.
• Fix keyboard and delay timing in i386 bootfloppy bootblocks. Whee!

OpenBSD 2.1 released (July 2, 1997).

• Few quirky changes to the way ISO9660 disklabel spoofing works in some ports.
• Fix a few more libc functions to generate very large fd_set's properly for select(2).
• Import newer version of vax port.
• Newer version of ext2fs that is reliable for read/write operation. This is essentially FULLY OPERATIONAL.
• Make adduser understand /etc/passwd.conf
• Support SIGINFO in ping; also add more complete icmp reporting capabilities.
• New named root.cache from Internic.
• Lots of man page fixes.
• Fix more overflows and other bugs in mail(1).
• tail(1) can now notice if the file been replaced or truncated.
• getpgid(2) from XPG3(?)
• In ar(1), truncate uid & gid if too large.
• Add some more malloc options to malloc(3)
• tcp wrappers 7.6
• Fix lots more NetBSD PR's.
• Few more fixes to pax(1).
• kill process timers if execve'ing a setuid/setgid executable.
• fix sendsmg() credential passing on 64 bit machines.
• Kernel now generates random pid values in fork().
• A few netinet fixes.
• Some more security and robustness changes to traceroute and ping.
• Add -P proto support to traceroute.
• fix SO_SNDTIMEO.
• add sysctl net.inet.tcp.{keepidle,keepintvl,slowhz}
• fix disklabel support in vnd/svnd.
• Ensure TCP RST is within window.
• Use /etc/namedb/tmp/ to avoid /var/tmp race conditions.
• Use dynamic fd_set allocation in more places, particularly setuid programs.
• tftpd -c flag.
• document the ddb hangman.
• Move named tmp files to /etc/named/tmp/ to avoid localhost race attacks.
• Addition of readlink(1).
• Implement hex/octal offsets in cmp(1), as documented.
• Repair many cross-references and other documentation problems in the section 2 and 3 man pages, and also fix a few minor other bugs discovered by analysis of recent changes in FreeBSD's and NetBSD's libc.
• Add tsearch(3) and friends to libc, as required by XPG3(?).
• Fixed a few netinet bugs as pointed out by TCP/IP Illustrated Vol.2.
• Improved performance in /dev/*random.
• Deal with atapi drives that cannot lock their doors.
• Fix /tmp races in make(1).
• Add tsearch(3) to libc.
• In newfs(8), fix -o and -m to work better.
• Correct -n behaviour in sort(1).
• Better support for unmounted filesystems in df(1).
• add per-interface bindings to inetd(8).
• Fix some more /tmp races in various programs.
• Support "-d dir" in rpc.yppasswdd(8).
• Make ifconfig(8) print full information about the full set of interface aliases.
• add -insecure flag to ypbind(8) so that it can bind to very old ypserv's.
• More ipsec changes!
• Change mount(2) to return EFTYPE for invalid filesystem.
• Some NLS improvements, notably some more language catalogs.
• Add ELOOP error handling to realpath(3).
• More paranoia in procfs.
• Slightly improve ftpd log file.
• Added automatic power down framework at halt(8) time, currently only supported on sun4m machines with the power device.
• IPF 3.1.11 + Darren's patches + 64-bit cleanup.
• Fix a minor problem in popen().
• Use O_EXLOCK for passwd locking to avoid a class of localhost denial of service attacks.
• Clip setsockopt SO_SND*/SO_RCV parameters.
• Repaired hundreds of long != int problems (in a bunch of programs) that affect the alpha.
• Y2K enhancement to date(1).
• Race fix to amd(8).
• Support IP option handling in IPSEC packets.
• Import of the gnu multi-precision math library, libgmp. This will be used by an IPSEC key daemon soon.
• Modify inetd to accept a "hostname,[hostname,...]:" token to added to the front of any line in /etc/inetd.conf. This permits services to be supplied only on certain interfaces.
• A few more minor netinet problems fixed.
• Import of cvs-1.9.10.
• Fix readlink(1).
• Permit tftpd to provide files over 32K blocks in size.
• New kprop/kpropd man pages.
• Make sleep(1) handle fractions of seconds. This is a nice extension.
• Move libdes out of the kerberos tree so that it can be used by other parts of the system too.
• Many more 64 bit fixes for the alpha, in about 20 more programs.
• libedit update with lots of fixes.
• Fixed all(?) Makefile wrappers for GNU software to not build and install manpages when NOMAN is set.
• Fixed highscore handling in battlestar(6).
• Repaired nfs handling in tcpdump.
• split ifconfig -a into -a/-A: -A prints ifaliases, -a does not.
• Fix a number of rtld dynamic loading problems.
• More IPSEC changes. IPSEC is almost fully useable now.
• Intel EtherExpress Pro/100B PCI driver.
• ATAPI devices may now reside in a kernel without wd (disk) devices.
• Amended issetugid(2) man page to be quite a bit more clear.
• Fix ruptime output for machines up > 99 days.
• Maintain process size stats in forkstat struct for "vmstat -f".
• make compress(1) do gzip support too.
• Make ed(1) work properly on a non-tty.
• Fix passive buffer overflow in rusers.
• Replace libc sha1 code with another version that is better in some respects.
• Repair symbolic link handling during coredumps (correctly, this time).
• Lots more IPSEC improvements.
• Add sha1 support to md5(1).
• Add sha1 digest support to mtree(8).
• More mail(1) fixes, particularly regarding long lines.
• cua devices, new MAKEDEV script in the hp300 port.
• Updated Sendmail to 8.8.6.
• man page cleanups.
• lpd security fixes.
• Add rmd160 hash support throughout the source tree.
• Import of the IPSEC photuris daemon.
• Add -d date support to last(1).
• make ctags operate a bit better in the presence of extra spacing.
• IPSEC Photuris daemon is integrated into the source tree.
• mail(1) behaves correctly when interrupted while getting headers from the user.
• mail(1) supports "inc" command.
• S/Key keyfile is now readable only by root. skeyinfo(1) and skeyaudit(1) have been enhanced and rewritten as C programs.
• Appletalk networking support.
• permit ftp(1) to download http pages without Content-Length.
• Some cribbage(6) fixes.
• All Makefile.bsd-wrapper files can now strip GNU binaries during install (pr 188.)
• Do not use tempnam(3) in mail(1).
• make amd(8) use /tmp_mnt by default.
• Implement IFF_NOARP handling in netinet.
• Fix pax to not need getcwd(3).
• Add -T support to last(1).
• -d flag for shutdown(8).
• Support lpc(8) "all" keyword option.
• Support YP map mail.aliases set of maps.
• Hardcode a list of reserved ports that random port allocation should not reuse.
• Use sendmail -t instead of other invocation forms inside lots of programs in the source tree.
• mremap(2) support for Linux emulation.
• Switch back to nvi; vim has copyright licensing issues.
• stime(2) support for SunOS emulation.
• More mail(1) fixes.... It's amazing Todd hasn't broken it.
• Support -H flag in who(1).
• Allocate reserved ports for NFS inside the kernel randomly.
• Man page improvements in many areas.
• Fix systat manpage.
• An ugly identd race fixed.
• More buffer overflow fixes in mail(1).
• Various fixes and improvements to the 3cXXX ethernet drivers.
• routed(8) is now disabled by default.
• Support fpx cards with i82555 PHY.
• Todd Miller is on a rampage, and making every single buffer inside mail(1) dynamically allocated...
• Radius support in tcpdump.
• More fixes to the alpha vga driver. Curses-based programs now work on it.
• FSF GNU texinfo 3.11.
• Attempt to cleanup identd. A long road left.
• Deal nicer with rfork/execve interactions.
• Make if_tun to prefix address family as a host byte order u_int32_t instead of a u_char, so that bpf can deal with the interface.
• Fix a kernel bug regarding double m_freem()..
• Sendmail 8.8.7.
• Fixed getnetbyaddr() 'always tried DNS' resolution problem from 2.1.
• Cyclades driver fixed. Works on alpha, too.
• More mdoc pages.
• save errno in most of the tree's SIGCHLD handlers, just in case.
• Make 127.0.0.1 assumed OK if /var/yp/securenet is in use.
• Fix pdksh bugs: closed too many fd's on exec, fix handling of (( )) to be compatible with POSIX sh spec without breaking $((, and explain how IFS works when splitting text after a substitution.
• Fix another race condition in identd.
• Work has started to fix the remainder of the signal handlers in the source tree with respect to errno clobbering.
• Seriously rework the identd daemon even further, to avoid even more input parsing problems and race conditions.
• Fix a memory leak in grep(1).
• Fix vacation(1) properly.
• Make bsd.doc.mk use DOCDIR.
• Support -n better in pstat(8).
• Change the bounds_check_with_label() API to handle a cpu_disklabel too.
• Optional TCP syn cookie support enabled via TCPCOOKIE kernel option.
• Import ypserv performance.
• Make bad random allocation ports settable via sysctl(8).
• Make gzexe(1) use mktemp to avoid races.
• Fix pcap_inject(3) in libpcap.
• In mountd(8), handle ext2fs specially, like most exported filesystems.
• Be even more paranoid (if it can be believed) in mail.local(8).
• Add top(1) to the source tree. Fix some problems.
• Fix another procfs security hole.
• ATAPI quirk for MATSHITA CR-574.
• Attempt to deal with archive timestamp and filemode problems in texinfo...
• Put hostname in root crontab mailout subjects.
• We are starting to pay attention to good things found in the XPG4 standard. We hope to never be compliant, because XPG4 goes way too far.
• More 1003.2 conformance: cal, cksum, sleep, compress, expr, etc.
• Support simple add/delete operations on ports in the baddynamic masks via sysctl(8)
• Be more careful about YP groups in getgrouplist().
• New PCMCIA Wavelan driver.
• More user-friendly error messages from mount_* when the filesystem is not in the kernel.
• Changed realloc(foo,0) semantics to be like malloc(0), not free(foo).
• Fixed a bug in cp(1) when the -r option is used and the source dir ends in a '/'.
• Verbose SCSI warnings are now available and on by default.
• Added basename(3) and dirname(3) for XPG4. dirname(1) is now trivial.
• XPG4 compatibility for ps(1) format options.
• Buffer overflow fixes in tip(1).
• Fixed err(3)/warn(3) argument usage in the tree.
• shutdown(8) now gets its own session as it deserves.
• Fixed a bug where the kernel could lie about how many file descriptors are available and cause a panic.
• ash is gone gone gone.
• The group vector could end up with duplicates esp. with YP. Now it won't.
• Document a64l(3) and l64a(3).
• basename(1) and dirname(1) no longer give an error for paths starting with '-'.
• Don't print duplicate fields in ps(1) when called with silly arguments.
• Few more 64 bit fixes in userland, in some rarely used system tools.
• Various fixes to battlestar(6).
• A few fixes to tip(1).
• In join(1), require compat options start with '-'.
• In dump(8), do not consider tape changing time in the timing estimates.
• Correct 'sync' option to dd(1).
• Lucent Technologies (formerly AT&T) awk version 970821.
• Handle setgid lossage in tip(1).
• Fix a crash in systat(8).
• Further IPSEC enhancement (but still no man pages for it though).
• In calendar(1), support "-t date" to let you see the calendar for other days.
• More SysVR4 emulation: sockets, NTP, POSIX time functions, pread(2)/pwrite(2).
• Kill "union wait" in a few more places.
• Handle SIGCHLD better in rlogin.
• Correct some remaining small inetd bugs.
• Do permission checking at delivery time for pgid's derived from TIOCSPGRP, F_SETOWN, or FIOSETOWN.
• Some FreeBSD m4(1) fixes.
• Fix first directory handling in "find -execdir"
• make glob(3) XPG4.2 compliant, which means use GLOB_ABORT.
• ppp 2.3.1...
• Another tip(1) overflow fix.
• New COMPAT_BSDOS binary compatibility subsystem.
• Print system call emulation in ps(1) output. Try "ps -axO emul".
• Update ftp(1) to new NetBSD changes.
• make mail(1) be permissive about pairs in mailbox files.
• Cleaned up verbose scsi error reporting.
• make bpfread() return ENXIO for uninitialized descriptors.
• Extend buffer lengths in patch(1).
• Fix a coredumping problem in tip(1).
• Preliminary manual pages for the IPSEC utils.
• Fix a long-standing and minor problem with ld.so on m68k.
• Ignore trailing spaces on priority in /etc/syslogd.conf.
• Make ddb not think 'h' means hangman.
• Some setlogin() and getlogin() fixes in the tree.
• Fixed small pathname buffer in man(1).
• Made indent(1) handle unlimited number of -T options.
• Some fsck_msdos(8) fixes.
• Make popen(3) safe if vfork(2) does real parent address space borrowing.
• Always set the SCSI-1 LUN field correctly in all transfers.
• Added ex (EtherExpress Pro/10) driver ported from FreeBSD
• Fix a ksh(1) bug.
• Permit a longer path buffer in tgetent(3).
• Some syslogd fixes.
• Fix SA_* sigaction(2) fields in the OS compat code.
• Don't error out of MDTM fails.
• Add sigaction(2) SA_NOCLDWAIT support.
• Add mkisofs(8).
• Run calendar -a in the background. (Points to whoever figures out why).
• Another important disk-full check in pwd_mkdb(8).
• Fix ftime(3).
• Fixed various MAKEDEV bugs on lots of architectures.
• Deal with some possible buffer overflows in sup.
• Make top(1) work better on very small screens.
• Fix tar to deal better with one more kind of strange tar file.
• Shrink most of the install floppies ;-)
• Fix a few small problems in rarpd(8).
• Make ls -d sort directories with files.
• Do not init pgid in /dev/log's logopen().
• Fixed a pstat -s related bug in pcvt.
• Ignore SIGPIPE in inetd(8).
• In struct sigaction, split sa_handler and the new sa_sigaction function pointers as is being done on newer POSIX systems. This permits proper prototyping of signal handlers.
• Fix an ifconfig bug related to interfaces that do not exist.
• Make execle() use alloca() instead of malloc(); to ensure execle() can be safely called in a signal hander.
• Fix the : and . support in chown so that usernames can have . in them.
• Fix a network performance problem introduced with IPSEC.
• Add support for FNM_LEADING_DIR, FNM_CASEFOLD, FNM_IGNORECASE to fnmatch(3).
• Fix a bug in libform.
• Add -f option to readlink which does a realpath(3).
• More IPSEC improvements after the Interop ANX bakeoff.
• A few pppd fixes.
• The random(6) tool (game?) now uses arc4random(3).
• Fix prompting code in pw_edit(3)
• Ignore bogus hostnames in the /etc/exports file.
• Make /etc/security handle blowfish-a passwd entries.
• Rewrite of fdisk(8).
• Handle a potential crash in the bpf driver.
• Quirks for two kinds of hitachi dk515 scsi drives and the Cipher ST150S tape drive.
• Handle creation of /var/tmp/vi.recover more securely.
• Implementation of the new disklabel -E mode.
• Support 'q' modifier in kernel vsprintf/kprintf
• In fmt(1), support backslashed whitespace inside words better.
• Make disklabel -E always succeed at writing a label. Now you can load a fictitious label, edit it, and write it out.
• Repair the msdosfs timestamping code so that NT/Win95 do not complain.
• Another lpd security fix.
• Some minor tftpd bug fixes.
• Fix one last little problem case in the fts(3) library routine. This is a very complicated piece of code...
• Fix a memory leak in libdes.
• Fix mktemp() to work correctly when specified against non-existant directories.
• Make ac(8) use the correct timestamp if the user specifies a different wtmp file.
• Fix a select/read race in identd(8) which would make it spin wildly.
• Make the ncr scsi driver work on big-endian machines too.
• Add per-host locking support to supfilesrv.
• Make clri(8) mark the filesystem dirty.
• Addition of 'kbus' port for the Solbourne Series5 sparc-based machines.
• The new afterboot(8) man page. Everyone should look at this.
• Prevent open(2) with wrong flag modes.

The OpenBSD 2.2 release is now being prepared for a December 1997 release. At the same time we are starting to work on 2.3...

• Add svr4 jioctl() compat interface.
• Make kdump(1) handle the newer emulations.
• a buffer underrun in ctags(1).
• In tftpd(8), permit syslog() to work when running chroot(2)'d.
• Add blowfish and cast encryption to IPSEC.
• SIGWINCH handling in systat(1).
• If a non-existant user logs in and asks for s/key authentication, fake a proper s/key prompt.
• Make disklabel -E deal with multiple partitions which overlap.
• Replace kernel printf with Torek's libc printf.
• Be more careful with getpwent() information inside rcp(1).
• Handle C++ and other languages in yacc(1) far better.
• Fix an as(1) parsing bug relating to the .ascii directive.
• Fix some memory leaks in the RPC code.
• Document how crypt(3) handles blowfish and MD5 passwords.
• Truncate large uid and gid values in ranlib(1), in the same way as this is handled in ar(1).
• Fix rpc.rquotad support if the quotas file resides on another filesystem.
• makewhatis(8) manpage added.
• Fixed ps(1) LIM and STAT columns.
• usleep(3) returns int, and add useconds_t type as required by XPG4.2
• 4.4BSD lite2 vfs integration.
• Support execution sections in syslog.conf.
• Start named(8) earlier in /etc/rc.
• add uu_lock(), uu_unlock() and uu_lockerr() to libutil.
• sendmail 8.8.8
• double MAX_KMAPENT and MAX_KMAP
• Fix tty suspend during sh -c "less file".
• Add more things to afterboot(8).
• Correct TCP's handling of RST.
• Fix EXTPROC in pty code.
• Update getNAME(8) and fix makewhatis(8) to use it more optimally.
• Some compat_svr4 fixes.
• Flesh out compat_freebsd a fair bit more.
• Some minor fixes for the libc/db/btree code.
• Add getsid(2) system call as mandated by XPG4.2.
• Make dumpfs(8) report if soft updates are requested by the superblock.
• Make "expr a : /" work.
• Support an "object" keyword in config(8).
• Support -mmin, -amin, and -cmin in find(1).
• Fix a ONLCR + FLUSHO situation in tty.c
• Make msync(2) POSIX compliant.
• Make the if_de driver support more cards.
• Clear CLOCAL mode in pppd if modem is set but modem_chat is not.
• Add inetd(8) -R rate flag, and crank default rate to 256.
• Fix a line continuation bug in sed(1).
• Change various system calls to take void * instead of caddr_t.
• Range-check the "how" argument for shutdown(2).
• Make the -Ss flag in rpcgen(1) work right.
• Add SHUT_RD, SHUT_WR, and SHUT_RDWR values for shutdown(2) as specified by XPG4.2.
• in chat(8), replace Mini Getopt from hell with real getopt().
• Minor logging feature changes in fingerd(8).
• Fix some Y2K problems in the nroff tmac macros.
• Added mode rangecheck in chmod(2) and fchmod(2).
• Consider only the 0177777 bits of the umask(2) value, as documented.
• Implement FIONBIO in ibcs2 emulation code.
• Make fstat(2) on AF_UNIX socket return proper st_[acm]time field values.
• make readlink(1) terminate it's buffer correctly.
• Clean /var earlier in the /etc/rc script.
• Fix the internals of open(2) when O_TRUNC and either O_SHLOCK or O_EXLOCK are set. (That was a nasty kernel bug).
• Fixed bug in 'systat vm' output.
• Update sudo(8).
• Import of FreeBSD's ppp(8) program.
• Fix a memory leak in the kernel process group manipulation code.
• Some man page cleanups.
• add -t option to disklabel(8).
• Fix a mget prompting error in ftp(1).
• Update to ncurses 4.1.
• Work around stupid linux emulation behaviour involving non-blocking connect(2).
• Massive performance optimization of the ccd device (RAID-like striping disk driver).
• Fix arp(8) ethernet address parsing for the illegal cases.
• Fix -amin option in find(1).
• Moving towards KTH kerberos 4-0.9.7.
• Fix /etc/rc scripts to require IPF if NAT is requested.
• Add asprintf(3) and vasprintf(3).
• Add hosts.equiv(3) and .rhosts(3) man page.

Development is rapidly continuing...

This list mentions mostly platform-independent changes. For a list of changes made in a particular platform, please check the page for that platform. If you find them not listed there, the changes are either (1) not being documented or (2) are documented here.