#!/bin/sh
# rc.clock:  Set or save the current system time.

PATH=/bin:/sbin:/usr/bin:/usr/sbin

# Sanity check:
if [ ! -x /sbin/hwclock ]; then
  exit 126;
fi

# Fix RTC clock on an ISA machine:
fix_rtc_clock() {
  if ! grep -qw rtc /proc/ioports ; then
    OPTION=--directisa
  fi
}

start() {
  fix_rtc_clock

  # Set the hardware clock to UTC or localtime:
  if grep -q ^UTC /etc/sysconfig/hardwareclock 2> /dev/null ; then
    echo "Setting time from the hardware clock (UTC)."
    hwclock --hctosys --utc $OPTION
  else
    echo "Setting time from the hardware clock (localtime)."
    hwclock --hctosys --localtime $OPTION
  fi
}

stop() {
  fix_rtc_clock

  # Set the hardware clock to UTC or localtime:
  if grep -q ^UTC /etc/sysconfig/hardwareclock 2> /dev/null ; then
    echo "Saving time from the system to the hardware clock (UTC)."
    hwclock --systohc --utc $OPTION
  else
    echo "Saving time from the system to the hardware clock (localtime)."
    hwclock --systohc --localtime $OPTION
  fi
}

# Options:
case "$1" in
  start)
    start
    ;;
  stop)
    stop
    ;;
  *)
    echo "Usage: $0 start,stop"
    exit 1
    ;;
esac