OpenBSD is een Unix-achtig open source besturingssysteem dat zich richt op correctheid van de code, de mogelijkheid om het op verschillende platformen te draaien, veiligheid en stabiliteit van het systeem. De lijst met mirrors is hier te vinden. Het volledige changelog is te lang om hier neer te zetten, daarom noemen we alleen belangrijkste wijzigingen van deze release:
- i386 Platform switched to ELF with OpenBSD/i386 3.4. The ELF executable file format offers greater flexibility in memory layout over the older a.out format, and was required for our W^X implementation on i386. Upgrading by source is NOT an option. Binary upgrades are possible, but very difficult, requiring uninstalling all existing packages before upgrade and reinstalling them after upgrade. There are many other potential issues here, the OpenBSD team HIGHLY recommends you reinstall from scratch. Note that an a.out binary emulation is provided by sysctl for binary-only applications that require it. If you are doing an upgrade, you will almost certainly need to enable this.
- Binary Emulations are disabled by default. This was done to make it more difficult to run a malicious program written for another platform on OpenBSD. This will prevent many ports from working properly until the emulation is activated as needed by use of sysctls. The standard GENERIC kernel has these options included, just disabled. No kernel recompile is needed. For more information, see this article. If you are doing an upgrade, you will almost certainly need to enable compat_aout.
- The 8G limit for the root partition is now gone. The i386 platform now supports booting anywhere within the BIOS supported area of the disk. Yes, this means the 8G limit of previous versions no longer applies. Intelligent partitioning is still highly recommended.
- PXE Booting. The i386 and amd64 platforms now support PXE booting for install.
- New Platforms. OpenBSD has added new platforms for 3.5:
- sparc64 now uses GCC 3.3.2. The sparc64 platform has switched to GCC 3.3.2 instead of the GCC 2.95.3 used on other platforms. Reinstallation is highly recommended over upgrading existing systems. The new cats and amd64 platforms are also using GCC 3.2.2. Local additions like ProPolice and other improvements are, of course, in the new GCC.
- New users and groups. Several new users and groups have been added to OpenBSD due to privilege separation. Upgraders will have to be sure to update their /etc directory carefully to incorporate them, as directed on upgrade-minifaq.
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