#!/bin/sh
# Copyright (c) 2014, The Linux Foundation. All rights reserved.
#
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# modification, are permitted provided that the following conditions are
# met:
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above
#       copyright notice, this list of conditions and the following
#       disclaimer in the documentation and/or other materials provided
#       with the distribution.
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#       from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# find_partitions        init.d script to dynamically find partitions
#

FindAndMountUBI () {
   partition=$1
   dir=$2
   basedev=$3
   mnttype=$4
   volnum="_0"

   mtd_block_number=`cat $mtd_file | grep -i $partition | sed 's/^mtd//' | awk -F ':' '{print $1}'`

   if test -z "$mtd_block_number";then
     return
   fi

   echo "MTD : Detected block device : $dir for $partition"
   mkdir -p $dir

   ubiattach -m $mtd_block_number -d $basedev /dev/ubi_ctrl
   device=/dev/ubi$basedev$volnum
   while [ 1 ]
    do
        if [ -c $device ]
        then
            mount -t ubifs -o $mnttype $device $dir -o bulk_read
            break
        else
            sleep 0.010
        fi
    done

   if [ "$partition" == "persist" ];then
	chown root:system /persist
	chmod 0775 /persist
   fi
}

FindAndMountVolumeUBI () {
   volume_name=$1
   dir=$2
   if [ ! -d $dir ]
   then
       mkdir -p $dir
   fi
   mount -t ubifs ubi0:$volume_name $dir -o bulk_read
}

mtd_file=/proc/mtd

fstype="UBI"
eval FindAndMountVolume${fstype} usrfs /data
eval FindAndMountVolume${fstype} systemrw /systemrw

eval FindAndMount${fstype} modem /firmware 1 ro
eval FindAndMount${fstype} persist /persist 2 rw
exit 0