#!/bin/bash

# udev
# Udev cold-plugging script

DAEMON=/sbin/udevd
DAEMON_DESC=UDEV
DAEMON_OPTS="--daemon"

# Source functions library
source /etc/rc.d/init.d/functions

log_script_name "$0 $*"

udev_coldplug()
{
    # Unlikely, but we may be faster than the first event
    mkdir -p /dev/.udev/queue &&

    # Configure all devices
    /sbin/udevadm trigger &&

    # Now wait for udevd to process the uevents we triggered
    /sbin/udevadm settle
}

udev_start()
{
    echo "" > /sys/kernel/uevent_helper &&

    # Start the udev daemon to continually watch for, and act on uevents
    ${DAEMON} ${DAEMON_OPTS}
}

# See how we were called
case "$1" in
    start)
        if ! grep -q '[[:space:]]sysfs' /proc/mounts; then
	    boot_failure "FAILURE: Unable to create devices without a SysFS filesystem."
        fi

        # Mount a temporary file system over /dev, so that any devices
        # made or removed during this boot don't affect the next one.
        # The reason we don't write to mtab is because we don't ever
        # want /dev to be unavailable (such as by `umount -a').
	cmd_run_log_box "Mounting /dev in tmpfs" mount -n -t tmpfs -o mode=0755 udev /dev
	cmd_run_log_box "Copying static /dev entries" cp --preserve=all --recursive --remove-destination /lib/udev/devices/* /dev
	cmd_run_log_box "Setting permissons on /dev/shm" chmod 1777 /dev/shm

	cmd_run_log_box_warn "${DAEMON_DESC} start" udev_start

	cmd_run_log_box "Performing Coldplugging" udev_coldplug
	;;

    *)
	echo "Usage: $0 {start}"
	exit ${EXIT_CODE_FAILURE}
	;;
esac

exit $?