#!/bin/sh

# udev
# Udev cold-plugging script

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

log_script_name "$0 $*"

udev_start()
{
    # 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 &&
    
    # Copy static device nodes to /dev
    cp -a /lib/udev/devices/* /dev &&
    
    # Start the udev daemon to continually watch for, and act on,
    # uevents
    /sbin/udevd --daemon &&
    
    # Now traverse /sys in order to "coldplug" devices that have
    # already been discovered
    /sbin/udevtrigger &&
    
    # Now wait for udevd to process the uevents we triggered
    /sbin/udevsettle
}

# 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').
        mount -n -t tmpfs tmpfs /dev -o mode=755
        if [ ${?} != 0 ]; then
	    boot_failure "FAILURE: Cannot mount a tmpfs onto /dev."
        fi

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

exit $?