diff options
Diffstat (limited to 'source/installer/sources/initrd/etc/rc.d/rc.udev')
| -rwxr-xr-x | source/installer/sources/initrd/etc/rc.d/rc.udev | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/source/installer/sources/initrd/etc/rc.d/rc.udev b/source/installer/sources/initrd/etc/rc.d/rc.udev new file mode 100755 index 00000000..8c238b0d --- /dev/null +++ b/source/installer/sources/initrd/etc/rc.d/rc.udev @@ -0,0 +1,133 @@ +#!/bin/sh +# This is a script to initialize udev, which populates the /dev +# directory with device nodes, scans for devices, loads the +# appropriate kernel modules, and configures the devices. + +PATH="/sbin:/bin" +OPT="" + +. /etc/udev/udev.conf + +# remove trailing slash from udev_root +UDEV_ROOT=$(echo "${udev_root}" |sed 's/\/*$//') + +case "$1" in + start) + # Sanity check #1, udev requires that the kernel support tmpfs: + if ! grep -wq tmpfs /proc/filesystems ; then + echo "Sorry, but you need tmpfs support in the kernel to use udev." + echo + echo "FATAL: Refusing to run /etc/rc.d/rc.udev." + exit 1 + fi + + # Sanity check #2, make sure that a 2.6.x kernel is new enough: + if [ "$(uname -r | cut -f 1,2 -d .)" = "2.6" ]; then + if [ "$(uname -r | cut -f 3 -d . | sed 's/[^[:digit:]].*//')" -lt "15" ]; then + echo "Sorry, but you need a 2.6.15+ kernel to use udev." + echo "Your kernel version is only $(uname -r)." + echo + echo "FATAL: Refusing to run /etc/rc.d/rc.udev." + exit 1 + fi + fi + + # Sanity check #3, make sure the udev package was not removed. If udevd + # is not there, this will also shut off this script to prevent further + # problems: + if [ ! -x /sbin/udevd ]; then + chmod 644 /etc/rc.d/rc.udev + echo "No udevd daemon found." + echo "Turning off udev: chmod 644 /etc/rc.d/rc.udev" + echo "FATAL: Refusing to run /etc/rc.d/rc.udev." + exit 1 + fi + + # Disable hotplug helper since udevd listens to netlink: + if [ -e /proc/sys/kernel/hotplug ]; then + echo "" > /proc/sys/kernel/hotplug + fi + + # if udevd is already running, rc.udev start will try to re-run + # failed events. Else, it will start udevd. + if ps axc | grep -q udevd ; then + OPT="--type=failed $OPT" + ( cd ${UDEV_ROOT}/.udev + for TMPFILE in tmp-rules-*.rules ; do + mv $TMPFILE /etc/udev/rules.d/${TMPFILE/tmp-rules--/} 2>/dev/null + done + ) + else + # Mount tmpfs on $UDEV_ROOT: + if ! grep -E -q "^[^[:space:]]+ $UDEV_ROOT tmpfs" /proc/mounts; then + # umount shm if needed + if grep -E -q "^[^[:space:]]+ $UDEV_ROOT/shm tmpfs" /proc/mounts; then + umount -l $UDEV_ROOT/shm + fi + + # Umount pts if needed, we will remount it later: + if grep -E -q "^[^[:space:]]+ $UDEV_ROOT/pts devpts" /proc/mounts; then + umount -l $UDEV_ROOT/pts + fi + + # Mount tmpfs on $UDEV_ROOT: + # the -n is because we don't want $UDEV_ROOT umounted when + # someone (rc.[06]) calls umount -a + mount -n -o mode=0755 -t tmpfs tmpfs $UDEV_ROOT + + # Remount pts: + mkdir $UDEV_ROOT/pts 2> /dev/null + mount -n -o mode=0620,gid=5 -t devpts devpts $UDEV_ROOT/pts + fi + + # Add the static nodes to $UDEV_ROOT: + cp --preserve=all --recursive --remove-destination /lib/udev/devices/* $UDEV_ROOT + + # Start udevd: + echo "Starting udevd: /sbin/udevd --daemon" + /sbin/udevd --daemon + + # Create rootdev rules + DEVICENUMBER=$( /bin/stat -c %d / ) + MAJORNUMBER=$(($DEVICENUMBER / 256)) + MINORNUMBER=$(($DEVICENUMBER % 256)) + + echo 'ACTION=="add|change", SUBSYSTEM=="block", ENV{MAJOR}=="'$MAJORNUMBER'", ENV{MINOR}=="'$MINORNUMBER'", SYMLINK+="root"' > /dev/.udev/rules.d/61-dev-root-link.rules + + fi + + echo "Triggering udev events: /sbin/udevadm trigger $OPT" + # Call udevtrigger and udevsettle to do the device configuration: + /sbin/udevadm trigger $OPT && /sbin/udevadm settle --timeout=120 + + ;; + stop) + echo "Stopping udevd" + if [ -e /proc/sys/kernel/hotplug ]; then + echo /sbin/hotplug > /proc/sys/kernel/hotplug + fi + killall udevd + ;; + restart) + echo "Restarting udevd" + killall udevd + sleep 5 + udevd --daemon + ;; + reload) + echo "Reloading udev rules" + udevadm control --reload-rules + cp --preserve=all --recursive --update /lib/udev/devices/* $UDEV_ROOT + ;; + force-reload) + echo "Updating all available device nodes in $UDEV_ROOT" + udevadm control --reload-rules + rm -rf $UDEV_ROOT/.udev $UDEV_ROOT/disk + cp --preserve=all --recursive --update /lib/udev/devices/* $UDEV_ROOT + ;; + + *) + echo "Usage: $0 {start|stop|restart|reload|force-reload}" + exit 1 + ;; +esac |