跟新OpenBSD系统代码

OpenBSD系统办法分布以及发展情况:

There are three "flavors" of OpenBSD:

• -release: The version of OpenBSD shipped every six months on CD.
• -stable: Release, plus patches considered critical to security and reliability.
• -current: Where new development work is presently being done, and eventually, it will turn into the next release.

Graphically, the development of these flavors looks something like this:

       ,------o-----------o----X                    4.0 Stable
       |      .           .
       |      .    ,------o---------o----X          4.1 Stable
       |      .    |      .         .
       |      .    |      .    ,----o----------o--> 4.2 Stable
       |      .    |      .    |    .          .
       |      .    |      .    |    .    ,-----o--> 4.3 Stable
       |      .    |      .    |    .    |     .
       |      .    |      .    |    .    |     .
 -->4.0Rel----->4.1Rel----->4.2Rel----->4.3Rel----> Current 

          Time --->

简单明了,三个主要版本:Release Stable Current

Release,每六个月以ISO或者CD形式发布的版本,不包含系统其后补丁.
Stable,不定期更新,包含了系统的补丁,比如说OpenBSD4.2 Stable,OpenBSD4.3 Stable.每个Stable相对应维护俩个后续办法发布,相当于4.3Stable维护到4.5Release发布日期.
Current,最新版本,包含了当前OpenBSD所有的特性,硬件平台支持,已经安全补丁修复.

Upgrade vs. Update
注意,在Upgrade中,OpenBSD只支持逐版本升级,比如4.1Release->4.2Release->4.3Release.不支持跳版本升级.每次Upgrade升级方法,会在相对应Release中公布.
Update:系统升级,比如从4.3Release升级到4.3Stable
Upgrade:系统版本升级,比如说从4.2Release升级到4.3Release

CVS vs. CVSUP
CVS同步Stable系统代码:
cd /usr
export 
cvs -d$CVSROOT checkout -rOPENBSD_4_3 -P src
升级系统代码:
cvs -d$CVSROOT up -rOPENBSD_4_3 -Pd

CVSUP同步Stable系统代码:
建立/etc/cvsup-stable文件,内容包括:
# Defaults that apply to all the collections
*default host=cvsup.usa.openbsd.org
*default tag=OPENBSD_4_3 (这里是你所要升级的stable版本号)
*default prefix=/usr
*default base=/usr
*default release=cvs umask=002 delete use-rel-suffix
#OpenBSD-all
#OpenBSD-ports
OpenBSD-src
#OpenBSD-www
#OpenBSD-xenocara
#OpenBSD-x11
#OpenBSD-xf4
升级命令 cvsup -g -L2 /etc/cvsup-stable

参考资料: