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|
#! /bin/bash
#
# random init script to setup /udev
#
# chkconfig: 2345 20 80
# description: manage user-space device nodes in /udev
#
# 2003-12-23: - some tweaks to run silently on a debian system
# 2003-12-30: - manage creation (and deletion) of /proc/self/fd->fd and
# fd/[0,1,2]->std[in,out,err] links
# - creation and deletion of /proc/kcore->core link
# - creation and deletion of /proc/asound/oss/sndstat->sndstat link
udev_dir=/udev
sysfs_dir=/sys
bin=/sbin/udev
action () {
if test $2 ; then
echo $1
else
echo "Assertion $2 failed"
echo "Aborting"
exit 1
fi
}
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
}
case "$1" in
start)
if [ ! -d $udev_dir ]; then
mkdir $udev_dir
fi
# don't use udev if sysfs is not mounted
if [ ! -d $sysfs_dir/block ]; then
exit 1
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
action "Creating initial udev device nodes: " /bin/true
export ACTION=add
run_udev
# hack to create stdin node
cd $udev_dir && ln -s /proc/self/fd fd
cd $udev_dir && ln -s fd/0 stdin
cd $udev_dir && ln -s fd/1 stdout
cd $udev_dir && ln -s fd/2 stderr
cd $udev_dir && ln -s /proc/kcore core
cd $udev_dir && ln -s /proc/asound/oss/sndstat sndstat
;;
stop)
# be careful
action "Removing udev device nodes: " /bin/true
export ACTION=remove
run_udev
rm -f $udev_dir/sndstat
rm -f $udev_dir/core
rm -f $udev_dir/stderr
rm -f $udev_dir/stdout
rm -f $udev_dir/stdin
rm -f $udev_dir/fd
;;
status)
if [ -d $udev_dir ]; then
echo "the udev device node directory exists"
else
echo "the udev device node directory does not exist"
fi
;;
restart)
$0 stop
$0 start
;;
reload)
# nothing to do here
;;
*)
echo "Usage: $0 {start|stop|status|restart}"
exit 1
esac
exit 0
|
