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#!/bin/sh
udev_root="/dev"
udev_rules="/lib/udev/rules.d"
udev_log="err"
# for new udevd
PATH=/lib/udev:$PATH
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.
if ! mount | grep -q devtmpfs; then
ln -snf /proc/self/fd /dev/fd
ln -snf /proc/self/fd/0 /dev/stdin
ln -snf /proc/self/fd/1 /dev/stdout
ln -snf /proc/self/fd/2 /dev/stderr
ln -snf /proc/kcore /dev/core
mknod /dev/null c 1 3
mknod /dev/console c 5 1
mknod /dev/zero c 1 5
fi
mkdir /dev/pts
mkdir /dev/shm
}
case $1 in
start)
echo "starting udev"
# don't use udev if sysfs is not mounted.
if [ ! -d /sys/kernel ]; then
echo "failed"
echo "error: sysfs not mounted"
exit 1
fi
# only mount a tmpfs if devtmpfs is not already there
if ! mount | grep -q devtmpfs; then
# The reason we don't write to mtab is because we don't ever
# want /dev to be unavailable (such as by `umount -a').
echo "mounting tmpfs at $udev_root"
mount -n -t tmpfs tmpfs $udev_root -o mode=755
fi
# udev handles uevents itself, so we don't need to have
# the kernel call out to any binary in response to them
echo > /proc/sys/kernel/hotplug
echo "creating static nodes"
make_extra_nodes
# Start the udev daemon to continually
# watch for, and act on, uevents
echo -n "starting udevd..."
udevd --daemon
if [ "$?" = "0" ]; then
echo "done"
else
echo "failed"
fi
# Now traverse sys/ in order to "coldplug"
# devices that have already been discovered
udevadm trigger
# Now wait for udevd to process
# the uevents we triggered
echo -n "waiting for devices..."
udevadm settle --timeout=10
if [ "$?" = "0" ]; then
echo "done"
else
echo "failed"
fi
# We can only mount /dev/pts after initialising udev
if [ -d "/dev/pts" ]; then
mount /dev/pts
fi
exit 0
;;
stop)
echo "stopping udevd... error, udevd cannot be stopped, aborting"
;;
*)
echo "usage: $0 [start|stop]"
;;
esac
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