#!/bin/sh

PATH="/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin"

HOME_DIR=/home/cristian
LOG_DIR=/var/log
BACKUP_DIR=${HOME_DIR}/logs
RAMDISK_DEV=/dev/ram0
USBPEN_DEV=/dev/sdd

# load default init functions
. /lib/lsb/init-functions

case "$1" in
start)
        log_action_begin_msg "Configuring my stuff"

        # ram disk fs for var logs
        mke2fs ${RAMDISK_DEV} > /dev/null 2>&1
        if [ $? -ne 0 ]
        then
                log_action_end_msg 1
                exit 1
        fi

        # mount ram disk
        mount ${RAMDISK_DEV} ${LOG_DIR} > /dev/null 2>&1
        if [ $? -ne 0 ]
        then
                log_action_end_msg 1
                exit 1
        fi

        # var logs backup
        rm -rf ${BACKUP_DIR}
        mkdir -p ${BACKUP_DIR}

        # mount usb pen
        mount ${USBPEN_DEV} ${BACKUP_DIR} > /dev/null 2>&1
        if [ $? -ne 0 ]
        then
                log_action_end_msg 1
                exit 1
        fi

        # start backup
        rsync -rv ${BACKUP_DIR}/log ${LOG_DIR}
        
        # hd spin down parameters
        hdparm -S24 -B1 -A1 /dev/sda
        if [ $? -ne 0 ]
        then
                log_action_end_msg 1
                exit 1
        fi

        # laptop mode
        echo 5 > /proc/sys/vm/laptop_mode

        # virtual memory sync tweak
        echo 8640000 > /proc/sys/vm/dirty_expire_centisecs

        # all ok
        log_action_end_msg 0
        ;;

stop)
        log_action_begin_msg "Deconfiguring my stuff"

        # unmount ram disk log file system
        umount ${LOG_DIR} > /dev/null 2>&1
        if [ $? -ne 0 ]
        then
                log_action_end_msg 1
                exit 1
        fi

        # unmount logs backup file system
        umount ${BACKUP_DIR} > /dev/null 2>&1
        if [ $? -ne 0 ]
        then
                log_action_end_msg 1
                exit 1
        fi

        # all ok
        log_action_end_msg 0
        ;;

*)
        echo "Usage: /etc/init.d/foobar {start|stop}"
        exit 1
        ;;
esac

exit 0