Dinc Reformat

#!/sbin/sh

# Recovery Script to reformat Droid Incredible data partiton as /ext4
# 4/15/2011 by getitnowmarketing getitnowmarketing@gmail.com
# Version 1.1


DMKE2FS="/sbin/mke2fs"
DTUNE2FS="/sbin/tune2fs"
DE2FSCK="/sbin/e2fsck"
CHECKMOUNTED=`mount | grep data | awk '{print $2}'`



case $1 in
    check)
     if [ "$CHECKMOUNTED" == "on" ]; then
        echo "/data already mounted"
     else
        mount /data 2>/dev/null
        sleep 2
     fi
          #Grab 5th collumn from the mount output greping only line with data
        FSTYPE=`mount | grep data | awk '{print $5}'`
        echo "Filesystem for Data is: $FSTYPE"
     ;;
        formatext4)
      if [ "$CHECKMOUNTED" == "on" ]; then
        echo "/data already mounted"
      else
        echo "mounting /data to check fs type"
        mount /data 2>/dev/null
        sleep 2
      fi
          FSTYPE=`mount | grep data | awk '{print $5}'`

        #Check if FS is ext4 already
      if [ "$FSTYPE" == "ext4" ]; then
        echo "your filesystem is already ext4"
        exit 1
      fi

        #Check if FS is ext3
      if [ "$FSTYPE" == "ext3" ]; then
        echo "/data is ext3 ..proceed"
      else
        echo "filesystem is $FSTYPE"
           exit 1
      fi

          #Get data partition dynamically
        DINCDATAPART=`mount | grep data | awk '{print $1}'`

        echo "unmounting /data"
        umount /data 2>/dev/null
        sleep 2

        "$DTUNE2FS" -O extents,uninit_bg,dir_index "$DINCDATAPART"
        "$DE2FSCK" -fpDC0 "$DINCDATAPART"
        sleep 2
        echo "done"
     ;;


    reformatext3)
      if [ "$CHECKMOUNTED" == "on" ]; then
        echo "/data already mounted"
      else
        echo "mounting /data to check fs type"
        mount /data 2>/dev/null
        sleep 2
      fi

          FSTYPE=`mount | grep data | awk '{print $5}'`

      if [ "$FSTYPE" == "ext4" ]; then
          #Get data partition dynamically
        DINCDATAPART=`mount | grep data | awk '{print $1}'`

        echo "unmounting /data"
        umount /data 2>/dev/null
        sleep 2
        echo "preparing to repartition /data as ext3"
        "$DMKE2FS" -t ext3 "$DINCDATAPART"
        "$DE2FSCK" -fp "$DINCDATAPART"
        sleep 2
      else
        echo "/data is not currently ext4"
        exit 1
      fi
     ;;
    --)
     ;;
esac
    CHECKMOUNTED=`mount | grep data | awk '{print $2}'`
    if [ "$CHECKMOUNTED" == "on" ]; then
        echo "unmounting /data"
        umount /data 2>/dev/null
        sleep 2
        exit 0
    else
        exit 0
        fi