#! /bin/bash
# start_udev
# script to initialize /dev by using udev.
#
# Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
# Released under the GPL v2 only.

. /etc/udev/udev.conf

prog=udev
sysfs_dir=/sys
bin=/sbin/udev
udevd=/sbin/udevd

run_udev () {
	# handle block devices and their partitions
	for i in ${sysfs_dir}/block/*; do
		# add each drive
		export DEVPATH=${i#${sysfs_dir}}
		#echo "$DEVPATH"
		$bin block

		# add each partition, on each device
		for j in $i/*; do
			if [ -f $j/dev ]; then
				export DEVPATH=${j#${sysfs_dir}}
				#echo "$DEVPATH"
				$bin block
			fi
		done
	done
	# all other device classes
	for i in ${sysfs_dir}/class/*; do
		for j in $i/*; do
			if [ -f $j/dev ]; then
				export DEVPATH=${j#${sysfs_dir}}
				CLASS=`echo ${i#${sysfs_dir}} | \
					cut --delimiter='/' --fields=3-`
				#echo "$DEVPATH"
				$bin $CLASS
			fi
		done
	done
	return 0
}

make_extra_nodes () {
	# there are a few things that sysfs does not export for us.
	# these things go here (and remember to remove them in 
	# remove_extra_nodes()
	ln -snf /proc/self/fd $udev_root/fd
	ln -snf /proc/self/fd/0 $udev_root/stdin
	ln -snf /proc/self/fd/1 $udev_root/stdout
	ln -snf /proc/self/fd/2 $udev_root/stderr
	ln -snf /proc/kcore $udev_root/core
        ( cd $udev_root ; ln -sf psaux mouse )
	mkdir $udev_root/pts
	mkdir $udev_root/shm
}

# If we see sysfs mounted, then try to start udev:
if [ -d $sysfs_dir/block ]; then
  echo "Initializing udev dynamic device directory."
  mount -n -t ramfs none $udev_root
  export ACTION=add
  export UDEV_NO_SLEEP=1
  # You can use the shell scripts above by calling run_udev or execute udevstart
  # which does the same thing, but much faster by not using shell.
  #  only comment out one of the following lines.
  #run_udev
  /sbin/udevstart
  make_extra_nodes
fi