#!/bin/sh
#
# sdcontrol 1.0 Rev.2 2006/03/30 by T.Yokota
# ( 1.0 2001/8/8 21:33:19 (Hideki Hayami) )
#
# Initialize or shutdown a SD card device
# (for pdaXrom 1.1.0 beta1 or older release)
#
# The first argument should be
#    'insert' 'eject' 'compeject' 'change'.
#

# Command parameter
ACTION=$1

# User definition
# (Please edit for your environment)
MOUNT_POINT=(/mnt/sd /mnt/card)
SWAPFILE=/mnt/card/.swap

# Constant definition
DEVICE_PREFIX=/dev/mmcd
STORAGE_STAT_FILE=/proc/usb-storage
STORAGE_PID_FILE=/var/run/usbdstorage.pid

# mouont / umount
case "$ACTION" in
'insert')
    TARGSTAT=0
    for TARGET in ${MOUNT_POINT[*]}
    do  
        mount | fgrep $TARGET > /dev/null 2>&1
        if (( $? != 0 )); then
            mount $TARGET
        fi
    done
    
    if [ -r $SWAPFILE ]; then
        swapon $SWAPFILE
    fi
    ;;

'eject'|'compeject')
    TARGSTAT=1
    SWAPSIZE=`free | awk '/Swap/{print $2}'`
    if [ $SWAPSIZE != "0" ]; then
        swapoff $SWAPFILE
    fi

    for TARGET in ${MOUNT_POINT[*]}
    do
        mount | fgrep $TARGET > /dev/null 2>&1
        if (( $? == 0 )); then
            TARGDEV=`grep $TARGET /etc/fstab | awk '{print $1}'`
            if [ $ACTION = "eject" ]; then
                fuser -s -m $TARGDEV
                if (( $? == 0 )); then
                   echo "!!WARNING!! Filesystem $TARGET is in use. Cannot umount."
                   continue
                fi
            else
                fuser -s -k -m $TARGDEV
            fi
            umount -l $TARGET
        fi
    done
    ;;

'change')
    $0 compeject
    sleep 1
    $0 insert
    ;;

*)
    echo "Usage : $0 ( insert | eject | compeject | change )"
    exit 1
    ;;
esac

# Check result
mount | grep -q $DEVICE_PREFIX
if (( $? != $TARGSTAT )); then
    echo "SD $ACTION failed."
    exit 1
fi

# Reload usb storage module (if executing)
grep -q $STORAGE_STAT_FILE $DEVICE_PREFIX 2> /dev/null
if (( $? == 0 )); then
    kill -HUP `cat $STORAGE_PID_FILE`
fi

# finish
exit 0