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

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

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

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)."
    /sbin/hwclock $OPTION --utc --hctosys
  else
    echo "Setting time from the hardware clock (localtime)."
    /sbin/hwclock $OPTION --localtime --hctosys
  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)."
    /sbin/hwclock $OPTION --utc --systohc
  else
    echo "Saving time from the system to the hardware clock (localtime)."
    /sbin/hwclock $OPTION --localtime --systohc
  fi
}

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