8. Appendix B. - complete rc.0 -> rc.6 file

#! /bin/sh
#
# rc.6          This file is executed by init when it goes into runlevel
#               0 (halt) or runlevel 6 (reboot). It kills all processes,
#               unmounts file systems and then either halts or reboots.
#
# Version:      @(#)/etc/rc.d/rc.6      1.50    1994-01-15
#
# Author:       Miquel van Smoorenburg <miquels@drinkel.nl.mugnet.org>
# Modified by:  Patrick J. Volkerding, <volkerdi@ftp.cdrom.com>
# Modified by:  Michael A. Robinton, <michael@bzs.org> for RAID shutdown

  # Set the path.
  PATH=/sbin:/etc:/bin:/usr/bin

  # Set linefeed mode to avoid staircase effect.
  stty onlcr

  echo "Running shutdown script $0:"

  # Find out how we were called.
  case "$0" in
        *0)
                message="The system is halted."
                command="halt"
                ;;
        *6)
                message="Rebooting."
                command=reboot
                ;;
        *)
                echo "$0: call me as \"rc.0\" or \"rc.6\" please!"
                exit 1
                ;;
  esac

  # Kill all processes.
  # INIT is supposed to handle this entirely now, but this didn't always
  # work correctly without this second pass at killing off the processes.
  # Since INIT already notified the user that processes were being killed,
  # we'll avoid echoing this info this time around.
  if [ "$1" != "fast" ]; then # shutdown did not already kill all processes
    killall5 -15 
    killall5 -9
  fi

  # Try to turn off quota and accounting.
  if [ -x /usr/sbin/quotaoff ]
  then
        echo "Turning off quota."
        /usr/sbin/quotaoff -a
  fi
  if [ -x /sbin/accton ]
  then
        echo "Turning off accounting."
        /sbin/accton
  fi

  # Before unmounting file systems write a reboot or halt record to wtmp.
  $command -w

  # Save localtime
  [ -e /usr/lib/zoneinfo/localtime ] && cp /usr/lib/zoneinfo/localtime /etc

  # Asynchronously unmount any remote filesystems:
  echo "Unmounting remote filesystems."
  umount -a -tnfs &

  # you must have issued
  # 'cat /proc/mdstat | grep md0 > {your boot vol}/linux/raidgood.ref'  
  # before linuxrc will execute properly with this info
  RAIDSTATUS=`/bin/cat /proc/mdstat | /usr/bin/grep md0 # capture raid status`

  # Turn off swap, then unmount local file systems.
  # clearing mdtab as well
  echo "Turning off swap."
  swapoff -a
  echo "Unmounting local file systems."
  umount -a -tnonfs

  # Don't remount UMSDOS root volumes:
  if [ ! "`mount | head -1 | cut -d ' ' -f 5`" = "umsdos" ]; then
    mount -n -o remount,ro /
  fi

  # root device remains mounted
  # mount dos file systems RW
  echo "Writing RAID read-only boot FLAG(s)."
  mount -n /dosa
  mount -n /dosc
  # create raid mounted RO flag in duplicate
  # containing the shutdown status of the raid array
  echo ${RAIDSTATUS} > /dosa/linux/raidstat.ro
  echo ${RAIDSTATUS} > /dosc/linux/raidstat.ro

  umount -n /dosa
  umount -n /dosc

  # Stop all the raid arrays (except root)
  echo "Stopping raid"
  mdstop -a

  # See if this is a powerfail situation.
  if [ -f /etc/power_is_failing ]; then
    echo "Turning off UPS, bye."
    /sbin/powerd -q
    exit 1
  fi

  # Now halt or reboot.
  echo "$message"
  [ ! -f /etc/fastboot ] && echo "On the next boot fsck will be FORCED."
  $command -f