#!/bin/sh
# Copyright (c) 2013, 2017, The Linux Foundation. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# 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.
#     * Neither the name of The Linux Foundation nor the names of its
#       contributors may be used to endorse or promote products derived
#       from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# 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

   mtd_block_number=`cat $mtd_file | grep -i $partition | sed 's/^mtd//' | awk -F ':' '{print $1}'`
   echo "MTD : Detected block device : $dir for $partition"
   mkdir -p $dir
   if [ $partition = "modem" ]
   then
       device=/dev/ubi1_0
       ubiattach -m $mtd_block_number -d 1 /dev/ubi_ctrl
   else
       device=/dev/ubi2_0
       ubiattach -m $mtd_block_number -d 2 /dev/ubi_ctrl
   fi

   while [ 1 ]
    do
        if [ -c $device ]
        then
            mount -t ubifs $device $dir -o bulk_read
            break
        else
            sleep 0.010
        fi
    done
}

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

FindAndMountEXT4 () {
   partition=$1
   dir=$2
   mmc_block_device=/dev/block/bootdevice/by-name/$partition
   echo "EMMC : Detected block device : $dir for $partition"
   if [ ! -d $dir ]
   then
       mkdir -p $dir
   fi
   while ! [ -e $mmc_block_device ]
   do
        echo "waiting for device node" $mmc_block_device
   done
   mount -t ext4 $mmc_block_device $dir -o relatime,data=ordered,noauto_da_alloc,discard
   echo "EMMC : Mounting of $mmc_block_device on $dir done"
}

mtd_file=/proc/mtd

ubifs_cmdline_flag=`cat /proc/cmdline`

if echo "$ubifs_cmdline_flag" | grep -i "rootfstype=ubifs" >/dev/null 2>&1
then
    eval FindAndMountVolumeUBI usrfs /data
    eval FindAndMountUBI persist /persist
    #eval FindAndMountUBI modem /firmware
else
    if [ ! -d /systemrw ]; then
       mkdir -p /systemrw
    fi
    mount -t ext4 /dev/mmcblk0p31 /data  -o relatime,data=ordered,noauto_da_alloc,discard
    mount -t ext4 /dev/mmcblk0p30 /systemrw  -o relatime,data=ordered,noauto_da_alloc,discard
    mount -t ext4 /dev/mmcblk0p22 /persist -o relatime,data=ordered,noauto_da_alloc,discard
    mount -t ext4 /dev/mmcblk0p23 /cache -o relatime,data=ordered,noauto_da_alloc,discard
fi

if [ ! -d /data/usb ]; then
   mkdir -p /data/usb
fi

exit 0