发布于 2015-08-20 03:24:39 | 134 次阅读 | 评论: 0 | 来源: 网友投递

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OpenBSD 类UNIX操作系统

OpenBSD是一个多平台的，基于4.4BSD的类UNIX操作系统，是BSD衍生出的三种免费操作系统（另外两种是NetBSD和FreeBSD）之一，被称为世界上最安全的操作系统。专案领导人 Theo de Raadt在1995年发起了OpenBSD 专案，希望创造一个注重安全的操作系统。

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OpenBSD 5.8 发布预览，计划 2015 年 10 月 18 日正式发布。

主要改进如下：

• 改进硬件支持：

  • New rtwn(4) driver for Realtek RTL8188CE wifi cards.

  • New hpb(4) driver for HyperTransport bridges as found in the IBM CPC945

  • The ugold(4) driver now supports TEMPerHUMV1.x temperature and humidity sensors.

  • Improved sensor support for the upd(4) driver for USB Power Devices (UPS).

  • Support for jumbo frames on re(4) devices using RTL8168C/D/E/F/G and RTL8411, including PC Engines APU.

  • re(4) now works with newer devices e.g. RTL8111GU.

  • Partial support has been added for full-speed isochronous devices in ehci(4), allowing USB 1.1 audio devices to be used on EHCI-only systems in some cases.

  • Improved macppc stability and G5 performances with MP kernels

  • acpicpu(4) uses ACPI C-state information to reduce power consumption of idle CPUs.

  • Kernel supports x86 AVX instructions on CPUs that have them.

  • Avoid assigning low address to PCI BARs, fixing various issues on machines whose BIOSes neglect to claim low memory.

  • wscons(4) works with even more odd trackpads.

  • Added pvbus(4) paravirtual device tree root on virtual machines that are running on hypervisors.

  • New octdwctwo(4) driver for USB support on OpenBSD/octeon.

  • New amdcf(4) driver for embedded flash on OpenBSD/octeon.

  • ...

• 移除的硬件支持：

  • The lmc(4) driver for Lan Media Corporation SSI/T1/DS1/HSSI/DS3 devices has been removed.

  • The san(4) driver for Sangoma Technologies AFT T1/E1 devices has been removed.

  • ...

• 常规网络栈改进

  • MTU of vlan(4) devices can now be set independently from the parent interface's MTU.

  • The same network range can now be assigned to multiple interfaces, using interface priorities to choose between them.

  • New  MPLS pseudowire driver mpw(4).

  • ...

• 安装器改进

  • hostname-mode.conf response file names.

  • response files to be placed in a subdir of the webserver's document root.

  • passing a template file to        disklabel(8)        to automatically partition the disk.

  • The default answer is now 'no'.

  • 'prohibit-password' has been added to the list of possible answers.

  • The logic of the 'Allow root ssh login?' question has been changed.

  • autoinstall(8)      has been extended to allow

  • ntpd(8)      is now enabled by default at install time.

  • DUID support has improved enough that new installs now use them unconditionally.

  • Installing sets from CD-ROM has been fixed if more than one CD-ROM drive is present.

  • The 'Which CD-ROM contains the install media?' question has been removed.      Available cdrom devices are now shown directly in the 'Location of sets?' prompt.

• 安全改进：

  • sudo in base has been replaced with doas(1), sudo is available as a package.

  • file(1) has been replaced with a new modern implementation, including sandbox and privilege separation.

  • pax(1) (and tar(1) and cpio(1)) now prevent archive extraction from escaping the current directory via symlinks; tar(1) without -P option now strips up through any ".." path components.

  • Improved kernel checks of ELF headers.

  • ...

详情请看发行说明和更新日志。

OpenBSD是一个从NetBSD衍生出来的类Unix操作系统。专案领导人Theo de Raadt在1995年]发起了OpenBSD专案，希望创造一个注重安全的操作系统，此外OpenBSD也以高品质的文件、坚持开放程式码以及严格的软 件授权著名。OpenBSD的吉祥物是河豚。

OpenBSD包含了一些在其他操作系统缺少或是选择性的安全功能，此外OpenBSD极度重视程式码的品质，任何对核心的修改都需要经过严格的程 式码审阅。OpenBSD可以在17种不同的硬件环境下运作，包含DEC Alpha、Intel i386、Hewlett-Packard PA-RISC、AMD64、Motorola 68000、PowerPC、Sun SPARC等。

历史版本 :
OpenBSD 6.2 发布，类 Unix 操作系统
OpenBSD 6.1 发布，类 Unix 操作系统
OpenBSD 6.1 发布，多项功能改进增强
OpenBSD 6.0 发布，多项功能改进增强
OpenBSD 6.0 发布，多项功能改进增强
OpenBSD 5.9 发布，多项改进
20周年纪念：OpenBSD发布5.8版本
OpenBSD 5.8 发布，改进硬件支持
OpenBSD 5.8 发布预览，计划10月18日正式推送
OpenBSD 5.7发布
OpenBSD 5.7 发布，类 Unix 操作系统
OpenBSD 现已支持 USB 3.0