From: Kay Sievers Date: Wed, 17 Jun 2009 16:04:05 +0000 (+0200) Subject: README: add /lib/udev/ is private X-Git-Tag: 174~943 X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=0f50d0ef04feecfb33ac7dd7a38300679c3ed27d README: add /lib/udev/ is private --- diff --git a/README b/README index 3a511802e..a2f00021e 100644 --- a/README +++ b/README @@ -1,12 +1,15 @@ udev - userspace device management -For more information see the files in the docs/ directory. +Integrating udev in the system has complex dependencies and differs from distro +to distro. All major distros depend on udev these days and the system may not +work without a properly installed version. The upstream udev project does not +recommend to replace a distro's udev installation with the upstream version. -Important Note: - Integrating udev in the system has complex dependencies and differs from distro - to distro. All major distros depend on udev these days and the system may not - work without a properly installed version. The upstream udev project does not - recommend to replace a distro's udev installation with the upstream version. +Tools and rules shipped by udev are not public API and may change at any time. +Never call any private tool in /lib/udev from any external application, it might +just go away in the next release. Access to udev information is only offered +by udevadm and libudev. Everything in /lib/udev and /dev/.udev/ is 100% private +to udev. Requirements: - Version 2.6.25 of the Linux kernel with sysfs, procfs, signalfd, inotify, @@ -38,8 +41,9 @@ Requirements: these group names with only the rootfs mounted, and while no network is available. - - To build all udev extras, libacl, libglib2, libusb, usbutils, pciutils are - needed. These dependencies can be disabled with the --disable-extras option. + - To build all udev extras, libacl, libglib2, libusb, usbutils, pciutils, + gperf are needed. These dependencies can be disabled with the + --disable-extras option. Operation: Udev creates and removes device nodes in /dev/, based on events the kernel