From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Jellinghaus Date: Sun, 19 Mar 2006 20:12:14 +0000 Subject: udev and hotplug Message-Id: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-hotplug@vger.kernel.org as far as I know the current recommendation is to disable /proc/sys/kernel/hotplug and let udevd handle everything via user space events. right? and is the hotplug package still needed, required, used? or does udev and hotplug even conflict? here are some sources that might need an update: udev README: - From kernel version 2.6.15 on, the hotplug helper /sbin/hotplug should be disabled with an init script before actions like loading kernel modules are taken, which may cause a lot of events. http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev.html Requirements It requires a 2.6 Linux kernel with CONFIG_HOTPLUG enabled to run. It is recommended that you also have the Linux Hotplug scripts installed, but it is not necessary for it to work properly. http://www.gentoo.org/doc/en/udev-guide.xml udev Every time the kernel notices an update in the device structure, it calls the /sbin/hotplug program. Hotplug runs the applications linked in the /etc/hotplug.d/default directory where you will also find a symlink to the udev application. Hotplug directs the information given by the kernel to the udev application which performs the necessary actions on the /dev structure (creating or deleting device files). http://fedora.redhat.com/docs/udev/ udev gets called by hotplug, if a module is loaded, and a device is added or removed. udev looks in /sys/, if the driver provides a "dev" file, which contains the major and minor number for a device node to communicate with the driver. After looking in the udev rules (in the /etc/udev/rules.d/ directory), which specify the device node filename and symlinks, a device node is created in /dev/ with the permissions, which are specified in /etc/udev/permissions.d/. I use none of those distributions, but maybe these people are on the list? Regards, Andreas ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid0944&bid$1720&dat1642 _______________________________________________ Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net Linux-hotplug-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel