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Mdev

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Author

Jose V Beneyto

Description

This document explains how to replace udev in CRUX with mdev.

Instructions

Build and install the mdev package

• Download port files from here: http://sepen.it.cx/crux/ports/crux-2.7/sepen/mdev/
• Or use the download command:

 $ rsync -aqz sepen.it.cx::ports/crux-2.7/sepen/mdev/ mdev

Finish the installation

• Edit /etc/rc and replace start_udev by start_mdev

 # sed 's|start_udev|start_mdev|' -i /etc/rc

• Edit /etc/rc.modules to load modules at boot (mdev does not auto-load modules for your hardware)

#!/bin/bash
#
# /etc/rc.modules: module initialization script
#

/sbin/depmod -a

# auto-load kernel modules
/usr/bin/find /sys -name 'modalias' -type f -exec /usr/bin/sort -u {} \; \
        | /usr/bin/xargs /sbin/modprobe -b -a 2>/dev/null

# End of file

Remove udev

At this point you can safely remove udev

 # pkgrm udev

Rebuild some ports

libdevmapper

Build the package without udev support

• Download port files from here: http://sepen.it.cx/crux/ports/crux-2.7/sepen/libdevmapper/
• Or use the download command

 $ rsync -aqz sepen.it.cx::ports/crux-2.7/sepen/libdevmapper/ libdevmapper

util-linux-ng

/bin/lsblk is compiled and linked against udev

 $ ldd /bin/lsblk | grep libudev
        libudev.so.0 => /lib/libudev.so.0 (0xb784b000)

mesa3d

/usr/lib/egl/egl_dri2.so is compiled and linked against udev

 $ ldd /usr/lib/egl/egl_dri2.so
	libudev.so.0 => /lib/libudev.so.0 (0xb784b000)

xorg-server

/usr/bin/Xorg is compiled and linked against udev

 $ ldd /usr/bin/Xorg | grep libudev
	libudev.so.0 => /lib/libudev.so.0 (0xb784b000)

note that /etc/X11/xorg.conf.d/10-evdev.conf dissapeared (evdev requires udev to work)

Configure Xorg desktop

Since xorg-xf86-input-evdev needs udev to be built then you should use xorg-xf86-input-keyboard and xorg-xf86-input-mouse instead.

TODO ...