#!/bin/bash
# Adaptacion del script de inicio de OpenRC para funcionar
# con systemd. Es llamado desde hwclock.service con las ordenes
# start o stop

# source application-specific settings
[ -f /etc/conf.d/hwclock ] && . /etc/conf.d/hwclock

#setting some variables
if [ -n "$clock" ]; then
	case $clock in
		"local")
			utc_cmd="--localtime"
			utc="Local Time"
			;;
		"UTC")
			utc_cmd="--utc"
			utc="UTC"
			;;
	esac
fi

### yesno function from gentoo's funcions.sh file
yesno()
{
        [ -z "$1" ] && return 1

        case "$1" in
                [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) return 0;;
                [Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0) return 1;;
        esac

        local value=
        eval value=\$${1}
        case "$value" in 
                [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) return 0;;
                [Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0) return 1;;
                *) logger "\$$1 is not set properly"; return 1;;
        esac
}

### setupopts function from gentoo's hwclock init script
setupopts()
{
        case "$(uname -m)" in
                s390*)
                        utc="s390"
                        ;;
                *)
                        if [ -e /proc/devices ] && \
                                grep -q " cobd$" /proc/devices
                        then
                                utc="coLinux"
                        fi
                        ;;
        esac

        case "$utc" in
                UTC|Local" "Time);;
                *) unset utc_cmd;;
        esac
}

### functions start/stop, adapted from gentoo's hwclock init script
start()
{
	local retval=0 errstr=""
	setupopts

	if [ -z "$utc_cmd" ]; then
		logger "Not setting clock for $utc system"
		return 0
	fi

	logger "Setting system clock"
	if [ -e /proc/modules ]; then
		local rtc=
		for rtc in /dev/rtc /dev/rtc[0-9]*; do
			[ -e "$rtc" ] && break
		done
		if [ ! -e "${rtc}" ]; then
			modprobe -vq rtc-cmos || modprobe -vq rtc || modprobe -vq genrtc
		fi
	fi

	if [ -e /etc/adjtime ] && yesno $clock_adjfile; then
		hwclock --adjust $utc_cmd
		: $(( retval += $? ))
	fi

        # If setting UTC, don't bother to run hwclock when first booting as that's the default
        if [ "$PREVLEVEL" != N -o "$utc_cmd" != --utc -o -n "$clock_args" ];
        then
                if yesno $clock_hctosys; then
                        hwclock --hctosys $utc_cmd $clock_args
                else
                        hwclock --systz $utc_cmd $clock_args
                fi
                : $(( retval += $? ))
        fi

        return $retval
}

stop()
{
        local retval=0 errstr=""
        setupopts

        [ -z "$utc_cmd" ] && return 0

        logger "Stopping hardware clock"

        if ! yesno $clock_adjfile; then
                # Some implementations don't handle adjustments
                if LC_ALL=C hwclock --help 2>&1 | grep -q "\-\-noadjfile"; then
                        utc_cmd="$utc_cmd --noadjfile"
                fi
        fi

        hwclock --systohc $utc_cmd $clock_args

        retval=$?

        return $retval
}

case $1 in
	"start") start ;;
	"stop") stop ;;
	*) echo "Opcion Incorrecta" ;;
esac