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|
#! /bin/bash
#
# udev init script to setup /udev
#
# chkconfig: 2345 20 80
# description: manage user-space device nodes in /udev
. /etc/rc.d/init.d/functions
. /etc/udev/udev.conf
prog=udev
sysfs_dir=/sys
bin=/sbin/udev
udevd=/sbin/udevd
udev_root=/udev
run_udev () {
# handle block devices and their partitions
for i in ${sysfs_dir}/block/*; do
# add each drive
export DEVPATH=${i#${sysfs_dir}}
$bin block &
# add each partition, on each device
for j in $i/*; do
if [ -f $j/dev ]; then
export DEVPATH=${j#${sysfs_dir}}
$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-`
$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()
#
# Thanks to Gentoo for the initial list of these.
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
#ln -snf /proc/asound/oss/sndstat $udev_root/sndstat
}
remove_extra_nodes () {
# get rid of the extra nodes created in make_extra_nodes()
rm $udev_root/fd
rm $udev_root/stdin
rm $udev_root/stdout
rm $udev_root/stderr
rm $udev_root/core
#rm $udev_root/sndstat
}
case "$1" in
start)
# don't use udev if sysfs is not mounted.
if [ ! -d $sysfs_dir/block ]; then
exit 1
fi
if [ ! -d $udev_root ]; then
mkdir $udev_root
fi
# remove the database if it is there as we always want to start fresh
if [ -f $udev_root/.udev.tdb ]; then
rm -f $udev_root/.udev.tdb
fi
# propogate /udev from /sys - we only need this while we do not
# have initramfs and an early user-space with which to do early
# device bring up
export ACTION=add
echo -n $"Creating initial udev device nodes:"
run_udev
make_extra_nodes
# We want to start udevd ourselves if it isn't already running. This
# lets udevd run at a sane nice level...
$udevd &
success /bin/true
echo
touch /var/lock/subsys/udev
;;
stop)
# be careful
echo -n $"Removing udev device nodes: "
export ACTION=remove
run_udev
remove_extra_nodes
success /bin/true
echo
rm -f /var/lock/subsys/udev
;;
status)
if [ -f /var/lock/subsys/udev ]; then
echo $"$prog has run"
exit 0
fi
echo $"$prog is stopped"
exit 3
;;
restart)
$0 stop
$0 start
;;
reload)
# nothing to do here
;;
*)
echo "Usage: $0 {start|stop|status|restart}"
exit 1
esac
exit 0
|
