#!/bin/sh -e

### BEGIN INIT INFO
# Provides:          udev
# Required-Start:    mountvirtfs
# Required-Stop:     
# Default-Start:     S
# Default-Stop:
# Short-Description: Start udevd, populate /dev and load drivers.
### END INIT INFO

export TZ=/etc/localtime

[ -d /sys/class ] || exit 1
[ -r /proc/mounts ] || exit 1
[ -x /sbin/udevd ] || exit 1
[ -f /etc/default/udev ] && . /etc/default/udev
[ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf

kill_udevd() {
	if [ -x /sbin/pidof ]; then
		pid=`/sbin/pidof -x udevd`
		[ -n "$pid" ] && kill $pid
	fi
}

export ACTION=add
# propagate /dev from /sys
echo "Starting udev"

# mount the tmpfs on /dev, if not already done
LANG=C awk "\$2 == \"/dev\" && \$3 == \"tmpfs\" { exit 1 }" /proc/mounts && {
	mount -n -o mode=0755 -t tmpfs none "/dev"
	mkdir -m 0755 /dev/pts
	mkdir -m 1777 /dev/shm
}

if [ "$DEVCACHE" != "" ]; then
	# Invalidate udev cache if the kernel or its bootargs/cmdline have changed
	[ -x /bin/uname ] && /bin/uname -mrspv > /tmp/uname || touch /tmp/uname
	[ -r /proc/cmdline ] && cat /proc/cmdline > /tmp/cmdline || touch /tmp/cmdline
	[ -r /proc/devices ] && cat /proc/devices > /tmp/devices || touch /tmp/devices
	[ -r /proc/atags ] && cat /proc/atags > /tmp/atags || touch /tmp/atags
	if [ -e $DEVCACHE ] && \
		cmp -s /tmp/uname /etc/udev/saved.uname && \
		cmp -s /tmp/cmdline /etc/udev/saved.cmdline && \
		cmp -s /tmp/devices /etc/udev/saved.devices && \
		cmp -s /tmp/atags /etc/udev/saved.atags; then
		(cd /; tar xf $DEVCACHE > /dev/null 2>&1)
		not_first_boot=1
	fi
fi

if [ ! -e "/lib/modules/$(uname -r)"/modules.dep ] ; then
	mkdir -p /lib/modules/$(uname -r)
	depmod -ae
fi

# make_extra_nodes
kill_udevd > "/dev/null" 2>&1

# trigger the sorted events
echo -e '\000\000\000\000' > /proc/sys/kernel/hotplug
/sbin/udevd -d

/sbin/udevadm control --env STARTUP=1
if [ "$not_first_boot" != "" ];then
	/sbin/udevadm trigger --subsystem-nomatch=tty --subsystem-nomatch=mem --subsystem-nomatch=vc --subsystem-nomatch=vtconsole --subsystem-nomatch=misc --subsystem-nomatch=dcon --subsystem-nomatch=pci_bus  --subsystem-nomatch=graphics	--subsystem-nomatch=backlight --subsystem-nomatch=video4linux  --subsystem-nomatch=platform --action=add
	(/sbin/udevadm settle --timeout=8; /sbin/udevadm control --env STARTUP=)&
else
	/sbin/udevadm trigger --action=add
	/sbin/udevadm settle
fi

exit 0
