#!/bin/sh
#----------------------------------------------------------------------------------------
# /etc/init.d/smartmon - configuration generator script for smartmon
#
# Creation:     09.02.2004  jb
# Last Update:  $Id$
#
# Copyright (c) 2004-2009 Jens Berger <jberger@gmx.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------------------

# reading eislib
. /var/install/include/eislib

# reading lsb init functions
. /lib/lsb/init-functions

smartd_bin=/usr/sbin/smartd
smartmon_conf_file=/etc/config.d/smartmon
pid_file=/var/run/smartd.pid
smartmon_valid_file=/var/smartmon/smartmon_valid
crontab_path=/etc/cron/root
crontab_file=$crontab_path/smartmon
plot_script=/var/install/bin/smartmon-plot

. $smartmon_conf_file

add_cron_job ()
{
    # check for cron directory
    if [ ! -d $crontab_path ]; then
        mkdir -p $crontab_path
    fi
    # write file
    (   echo "# Do not edit this file, edit $smartmon_conf_file"
        echo "# Creation date: `date`"
        echo "$SMARTMON_PLOT_CRON_SCHEDULE $plot_script"
    ) > $crontab_file
    # update crontab file
    /var/install/config.d/cron >/dev/null 2>&1
}

delete_cron_job ()
{
    # check for crontab file
    if [ -f $crontab_file ]; then
        # delete existing file
        rm -f $crontab_file
        # update crontab file
        /var/install/config.d/cron >/dev/null 2>&1
    fi
}


start_smartd ()
{
    log_daemon_msg "Starting S.M.A.R.T. daemon ..."
    ps -e | grep -w -q smartd
    if [ $? -eq 0 ]; then
        log_failure_msg "S.M.A.R.T. daemon is already running."
        exit 0
    else
        rm -f $pid_file
        if [ -f $smartmon_valid_file ]; then
            if /sbin/start-stop-daemon --start --quiet --oknodo --pidfile $pid_file --exec $smartd_bin -- -p $pid_file; then
                log_end_msg 0
                if [ "$SMARTMON_PLOT" = "yes" ]; then
                    add_cron_job
                else
                    delete_cron_job
                fi
            else
                log_end_msg 1
                log_failure_msg "Errors occured while trying to start S.M.A.R.T. daemon."
                log_failure_msg "Please check /var/log/messages."
                delete_cron_job
            fi
        else
            log_end_msg 1
            log_failure_msg "S.M.A.R.T. daemon not started because of misconfiguration."
            log_failure_msg "Please check your configuration."
            delete_cron_job
        fi
    fi
}

stop_smartd ()
{
    log_daemon_msg "Stopping S.M.A.R.T. daemon ..."
    if /sbin/start-stop-daemon --stop --quiet --oknodo --pidfile $pid_file; then
        log_end_msg 0
        delete_cron_job
    else
        log_end_msg 1
    fi
    rm -f $pid_file
}


status_smartd ()
{
    pidofproc -p $pid_file $smartd_bin >/dev/null
    status=$?
    if [ $status -eq 0 ]; then
        log_warning_msg "S.M.A.R.T. daemon is running."
    else
        log_failure_msg "S.M.A.R.T. daemon is not running."
    fi
    exit $status
}

case $1 in
    start)
        start_smartd
    ;;

    stop)
        stop_smartd
    ;;

    restart)
        stop_smartd
        start_smartd
    ;;

    status)
        status_smartd
    ;;

    *)
        mecho "Usage: $0 {start|stop|status|restart}"
    ;;
esac