Udev and systemd to merge

From: Kay Sievers <kay-AT-vrfy.org> To: linux-hotplug-AT-vger.kernel.org Subject: The future of the udev source tree Date: Tue, 3 Apr 2012 18:15:13 +0200 Message-ID: <CAPXgP110RNdjNqJtd7w=oSbLVM9XcspM2SMD_SjE8JmktEBtbQ@mail.gmail.com> Archive-link: Article, Thread

We are about to merge the udev sources into the systemd source tree. After that, the next version of systemd will continue with udev’s version numbering, i.e. jump immediately from 45 to 184. After udev is merged into the systemd tree you can still build it for usage outside of systemd systems, and we will support these builds officially. In fact, we will be supporting this for a long time since it is a necessity to make initrds (which lack systemd) work properly. Distributions not wishing to adopt systemd can build udev pretty much the same way as before, however should then use the systemd tarball instead of the udev tarball and package only what is necessary of the resulting build. Today, ‘Init’ needs to be fully hotplug-capable; udev device management and knowledge about device lifecycles is an integral part of systemd and not an isolated logic. Due to this, and to minimize our administrative workload, as well as to minimize duplication of code, and to resolve cyclic build dependencies in the core OS, we have decided to merge the two projects. The udev built from the systemd source tree will stay compatible with non-systemd init systems for a long time. This change is mostly a detail of the build scheme, rather than a change of direction or interfaces. Accordingly, the libudev API is untouched by these build infrastructure changes. For us, compatibility is key. -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html