BSD的UNIX操作系統，OpenBSD 5.2 發布

jopen 12年前發布 | 23K 次閱讀 OpenBSD

可以通過以下渠道獲取發布的文件:

  • 訂購 CDROM 從他們的 ordering system.

  • See the information on The FTP page for a list of mirror machines.

  • Go to the pub/OpenBSD/5.2/ directory on one of the mirror sites.

  • Briefly read the rest of this document.

  • Have a look at The 5.2 Errata page for a list of bugs and workarounds.

  • See a detailed log of changes between the 5.1 and 5.2 releases.
    • </ul> </span></h3>

    更新情況：

    這是一個部分列表，包含在OpenBSD 5.2 系統中的新功能。完整的列表請查看 changelog

    • pthreads(3) support:
      • The most significant change in this release is the replacement of the user-level uthreads by kernel-level rthreads, allowing multithreaded programs to utilize multiple CPUs/cores.
      • Use PTHREAD_MUTEX_STRICT_NP as default mutex type.
      • Added pthread spinlock and barrier routines.
      • Added pthread_mutex_timedlock(3) and sem_timedwait(3).
      • Added pthread_condattr_setclock(3).
      • Added support for live multi-threaded debugging in gdb(1).
      • Improved handling for rusage totals and interval timers in threaded processes.
      • Changed the RLIMIT_NPROC rlimit to count processes instead of threads.
      • Added a new system limit kern.maxthread for the max number of threads.
      • Closed race conditions in thread creation, and in fork(2) and open(2) in a threaded process.
      • Improved handling of threaded processes in ps(1), top(1), and fstat(1).
      • Changed the lock around dlopen() to be recursive, so that dl*() operations from atexit() handlers don't deadlock.
      • Many fixes to pthread attribute and mutex error checking and cancellation handling.

    • 改進的硬件支持，其中包括：
      • Added hibernation support on i386. Currently only working on pciide(4) and wd(4) disks.
      • Improved support for ALPS based touchpads in wsmouse(4) and the synaptics(4) X.Org input driver.
      • Performance improvements with ix(4) Intel 10Gb Ethernet NICs.
      • Support for i350 based devices in em(4).
      • Flow control support for bnx(4).
      • Hardware watchdog and HPET support for tcpcib(4) (Intel Atom E600) as found in some embedded x86 systems.
      • urndis(4) supports additional Android devices.
      • Support for Winbond W83627UHG has been added to wbsio(4).
      • Support for the SMBus controller of the AMD CS5536 in glxpcib(4) and the NVIDIA MCP89 in nviic(4).
      • Support for AX88772B based devices has been added to axe(4).
      • Support for MCS7832 based devices has been added to mos(4).
      • Support for the Roland UM-ONE has been added to umidi(4).
      • Support for the AMD Hudson-2 chipset has been added to azalia(4) and piixpm(4).
      • Support for NetMos NM9820 cardbus serial cards has been added to com(4).
      • Support for Huawei Mobile E303 has been added to umsm(4).
      • The sgi port now supports the R4000 Indigo (IP20), Indy (IP22), R4000 Indigo2 (IP24) and POWER Indigo2 R10000 (IP28) families.

    • 通用網絡協議棧的改進：
      • Increased TCP initial window to 14600 bytes as proposed in draft-ietf-tcpm-initcwnd.
      • Cleanup handling of sockaddrs in degenerate use cases.
      • Improved handling of error and limit cases in file descriptor passing.
      • Improved socketbuffer handling for AF_UNIX sockets.
      • Fix yet another file descriptor leak in message passing.
      • Improved error handling in socket splicing.
      • IPv6 privacy addresses now appear alongside SLAAC addresses.
      • Support for Extended Sequence Numbers has been added to the IPsec stack and iked(8).
      • Bridging two IPv4 networks over an IPv6 link with gif(4) is now possible.

    • 路由守護程序和其他用戶級網絡的改善：

    • pf(4) improvements:
      • pf(4) now ignores/preserves the lower 2 bits of the tos-header (used for Explicit Congestion Notification).
      • Allow more than 16 pflog(4) interfaces.
      • pf(4) now supports weighted least-states load balancing.
      • The prio and tos options are now part of the "set { }" block. See pf.conf(5).
      • Allow to set the tos on IPv6 packets.
      • Better demotion handling in pfsync(4) to prevent failovers without having a full state table.
      • Fixed printing of wildcard anchors in pfctl(8).

    • Assorted improvements:
      • Added nginx(8), an HTTP server, reverse proxy server and mail proxy server.
      • Added SQLite 3.7.13, a self-contained SQL database engine.
      • libpcap has been updated with several core functions from tcpdump.org's libpcap-1.2.0 API, without the clutter.
      • Disabled SSLv2 in OpenSSL.
      • Moved libtool(1) into the base system. Much work remains to be done.
      • Removed lint(1).
      • Removed the raid(4) RAIDframe driver and its corresponding raidctl(8) utility. RAIDframe has been superseded by softraid(4).
      • Added posix_spawn(3).
      • Added mbsnrtowcs(3) and wcsnrtombs(3).
      • Added getdelim(3) and getline(3).
      • More configuration variables for sysconf(3) and pathconf(2).
      • dirfd(3) is now a function instead of a macro.
      • posix_memalign(3) supports arbitrarily large alignments.
      • Improved realloc(3) performance.
      • ld.so(1) recognizes the DF_1_NOOPEN flag and refuses to dlopen(3) shared objects linked with "-z nodlopen".
      • Improved compliance and/or cleanliness of header files, particularly <dirent.h>, <time.h>, <sys/time.h>, <limits.h>, <arpa/inet.h>, <netinet/in.h>, and <sys/param.h>.
      • Improved kernel uvm memory allocator.
      • Added support for using AMT to provide console-over-Ethernet (c.f. the amtterm package).
      • Improved support for amd64 systems with many memory extents.
      • compat_linux(8) improvements: TLS-vs-clone and futex fixes, added support for statfs64(), tgkill(), gettid(), SOCK_CLOEXEC, and SOCK_NONBLOCK.
      • kdump(1) improvements, including the ability to show thread IDs and dumping of timespec, timeval, sigaction, rlimit, sigset, clockid, and fdset arguments and results.
      • Various improvements in smtpd(8): reliability fixes, new MTA client, new scheduler and improved queue logic, simplified smtpd.conf(5) syntax, better RFC compliance and several cosmetic changes.
      • The mg(1) emacs-like editor now supports cscope functionality. Also, backup files can now be saved to a user's home directory in addition to the current working directory.
      • Fixed operation of kvm_getfile2() (and therefore fstat(1) and pstat(8)) on kernel crash dumps.
      • Improved emacs-style key bindings and handling of large arrays in ksh(1).
      • halt(8) disables "suspend-on-lid-close" so that you don't accidentally suspend instead of shutting down.
      • Improvements to parallel make(1): added the .CHEAP and .EXPENSIVE special targets and fixed glitches in already-rebuilt logic.
      • The libusb package is able to access non-ugen(4) devices for some operations, allowing e.g. programming YubiKeys with a standard kernel.
      • Various improvements in tmux(1): a new unified tree view to select sessions or windows, new move-pane and renumber-windows commands, a history of pane layouts, simple output rate limiting, and custom formats (-F) have been extended and are now accepted by more commands.
      • fsck_msdos(8) now works on devices with non-512 byte sectors.
      • quotacheck(8) now works with DUID based fstab(5) files.
      • Numerous minor improvement to fdisk(8), including more sanity checking and better default partition sizing on large disks.
      • dhclient(8) now discards trailing NULs in option data, and in general parses option data with more paranoia.
      • Various improvements to dhclient(8) startup and timeout handling.
      • disklabel(8) does a better job of calculating physical memory during partition auto-allocation of devices with non-512 byte sectors.
      • SCSI errors are now correctly propagated to userland, e.g. mount(2) now reports specific errors such as trying to mount RW filesystems from RO media.
      • Improved FAT media handling: autorecognize such media even if the 0x55aa signature is missing and prevent the writing of an OpenBSD disklabel over the FAT data structures.
      • The MS-DOS FAT filesystem implementation gained a significant write speedup for large files (up to twice as fast).

    • OpenSSH 6.1:
      • New features:
        • sshd(8): This release turns on pre-auth sandboxing sshd by default for new installs, by setting UsePrivilegeSeparation=sandbox in sshd_config.
        • sshd-keygen(1): Add options to specify starting line number and number of lines to process when screening moduli candidates, allowing processing of different parts of a candidate moduli file in parallel.
        • sshd(8): The Match directive now supports matching on the local (listen) address and port upon which the incoming connection was received via LocalAddress and LocalPort clauses.
        • sshd(8): Extend sshd_config Match directive to allow setting AcceptEnv and {Allow,Deny}{Users,Groups}.
        • Add support for RFC6594 SSHFP DNS records for ECDSA key types. (bz#1978)
        • sshd-keygen(1): Allow conversion of RSA1 keys to public PEM and PKCS8.
        • sshd(8): Allow the sshd_config PermitOpen directive to accept "none" as an argument to refuse all port-forwarding requests.
        • sshd(8): Support "none" as an argument for AuthorizedPrincipalsFile.
        • sshd-keyscan(1): Look for ECDSA keys by default. (bz#1971)
        • sshd(8): Add "VersionAddendum" to sshd_config to allow server operators to append some arbitrary text to the server SSH protocol banner.
      • The following significant bugs have been fixed in this release:
        • sshd(8) and ssh(1): Don't spin in accept() in situations of file descriptor exhaustion. Instead back off for a while.
        • sshd(8) and ssh(1): Remove hmac-sha2-256-96 and hmac-sha2-512-96 MACs as they were removed from the specification. (bz#2023)
        • sshd(8): Handle long comments in config files better. (bz#2025)
        • ssh(1): Delay setting tty_flag so RequestTTY options are correctly picked up. (bz#1995)
        • sshd(8): Fix handling of /etc/nologin incorrectly being applied to root on platforms that use login_cap.

    • Over 7600 ports, major performance and stability improvements in the package build process:
      • dpb got simpler and faster. Handles distfiles, works without any option.
      • Simpler and less error-prone mechanisms for handling MD differences.
      • dpb is now used for mirroring distfiles, to the great joy of ftp://ftp.openbsd.org/pub/OpenBSD/distfiles/
      • full databases of all ports available as packages:
        • pkglocatedb - a locate(1) database of all files in all packages
        • sqlports - a sqlite3(1) database of all meta-info for all packages
        • ports-readmes - a tree of html files for browsing thru available packages

    • Many pre-built packages for each architecture:
      • i386: 7483
      • sparc64: 6820
      • alpha: 5993
      • sh: 2412
      • amd64: 7439
      • powerpc: 7050
      • sparc: 4466
      • arm: 5802
      • hppa: 6316
      • vax: 2279
      • mips64: 5845
      • mips64el: 5908

    • Some highlights:
      • GNOME 3.4.2
      • KDE 3.5.10
      • Xfce 4.10
      • MySQL 5.1.63
      • PostgreSQL 9.1.4
      • Postfix 2.9.3
      • OpenLDAP 2.3.43 and 2.4.31
      • Mozilla Firefox 3.5.19, 3.6.28 and 13.0.1
      • Mozilla Thunderbird 13.0.1
      • GHC 7.0.4
      • LibreOffice 3.5.5.3
      • Emacs 21.4, 22.3 and 23.4
      • Vim 7.3.154
      • PHP 5.2.17 and 5.3.14
      • Python 2.5.4, 2.7.3 and 3.2.3
      • Ruby 1.8.7.370 and 1.9.3.194
      • Tcl/Tk 8.5.11
      • Jdk 1.7
      • Mono 2.10.9
      • Chromium 20.0.1132.57
      • Groff 1.21
      • Go 1.0.2
      • GCC 4.6.3 and 4.7.1
      • LLVM/Clang 3.1
      • Lua 5.1.5 and 5.2.1

    • 像往常一樣，在手冊頁和其他文檔的穩步提高。

    • The system includes the following major components from outside suppliers:
      • Xenocara (based on X.Org 7.7 with xserver 1.12.2 + patches, freetype 2.4.10, fontconfig 2.8.0, Mesa 7.10.3, xterm 279, xkeyboard-config 2.6 and more)
      • Gcc 4.2.1 (+patches) and 2.95.3 (+ patches)
      • Perl 5.12.2 (+ patches)
      • Our improved and secured version of Apache 1.3, with SSL/TLS and DSO support
      • Nginx 1.2.2 (+ patches)
      • OpenSSL 1.0.0f (+ patches)
      • SQLite 3.7.13 (+ patches)
      • Sendmail 8.14.5, with libmilter
      • Bind 9.4.2-P2 (+ patches)
      • NSD 3.2.11
      • Lynx 2.8.7rel.2 with HTTPS and IPv6 support (+ patches)
      • Sudo 1.7.2p8
      • Ncurses 5.7
      • Heimdal 0.7.2 (+ patches)
      • Arla 0.35.7
      • Binutils 2.15 (+ patches)
      • Gdb 6.3 (+ patches)
      • Less 444 (+ patches)
      • Awk Aug 10, 2011 version
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