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#!/sbin/runscript
# Copyright 1999-2014 Gentoo Foundation
# Distributed under the terms of the GNU General Public License, v2

description="Hard Drive Active Protection System daemon"
command="/usr/sbin/hdapsd"
pidfile="/run/hdapsd.pid"

# Always daemonize when started by OpenRC, and don't make the pidfile
# configurable. Even if the user sets something dumb for the pidfile
# in /etc/hdapsd.conf, we want it to work! Fortunately the settings
# passed on the command-line override the config file.
command_args="--background --pidfile=${pidfile}"


depend() {
    need localmount
}

checkconfig() {
    # An empty DISKLIST is allowed because the disk will be
    # auto-detected.
    for DISK in ${DISKLIST}; do
        if [ ! -b /dev/${DISK} ]; then
            eerror "Could not find disk /dev/${DISK}!"
            eerror "Adjust the DISK setting in /etc/conf.d/hdapsd"
            return 1
        fi

        if [ ! -e /sys/block/${DISK}/queue/protect ] && \
	    [ ! -e /sys/block/${DISK}/device/unload_heads ] ; then
            eerror "No protect entry for ${DISK}!"
            eerror "Make sure your kernel is patched with the blk_freeze patch"
            return 1
        fi
    done

    # Load the tp_smapi module first. This is not a requirement, but
    # it helps hdapsd's adaptive mode.
    if [ ! -e /sys/devices/platform/smapi ] ; then
	modprobe tp_smapi 2>/dev/null
    fi

    if [ ! -d /sys/devices/platform/hdaps ] ; then
	ebegin "Loading hdaps module"
        modprobe hdaps
	eend $? || return 1
    fi
}

start() {
    checkconfig || return 1

    for DISK in ${DISKLIST}; do
	command_args="${command_args} -d ${DISK}"
    done

    # Since all of these settings are now optional, we append them
    # only if we need to.
    if [ ! -z "${THRESHOLD}" ] ; then
	command_args="${command_args} --sensitivity ${THRESHOLD}"
    fi

    if [ ! -z "${SYSLOG}" ] ; then
	command_args="${command_args} --syslog"
    fi

    if [ ! -z "${OPTIONS}" ] ; then
	command_args="${command_args} ${OPTIONS}"
    fi

    ebegin "Starting the ${description}"
    start-stop-daemon --start --exec "${command}" --pidfile "${pidfile}" \
	-- ${command_args}
    eend $?
}