#!/sbin/sh
# Reboot script for ICSSGS ROM
# (c) 2012 by ICSSGS

set -x
PATH=$PATH:/tmp:/tmp/updates

mount_part()
{
    if ! [ $(/tmp/busybox mount | /tmp/busybox grep "/dev/block/$2 /$1 $3" | /tmp/busybox wc -l) -eq "1" ] ; then
        /tmp/busybox mkdir -p /$1
        /tmp/busybox umount -l /dev/block/$2
        if ! /tmp/busybox mount -t $3 /dev/block/$2 /$1 ; then
            echo "$1 cannot be mounted successfully."
        fi
    else
        /tmp/busybox umount -l /dev/block/$2
        if ! /tmp/busybox mount -t $3 /dev/block/$2 /$1 ; then
            echo "$1 cannot be mounted successfully."
        fi
    fi
}

backup_efs()
{
    if [ -e /mnt/sdcard/backup/efs ] ; then
        /tmp/busybox mv /mnt/sdcard/backup/efs /mnt/sdcard/backup/efs-$$
    fi
    /tmp/busybox rm -rf /mnt/sdcard/backup/efs
    /tmp/busybox mkdir -p /mnt/sdcard/backup/efs
    /tmp/busybox cp -a /efs/ /mnt/sdcard/backup
}

restore_efs()
{
    /tmp/busybox umount -l /efs
    /tmp/erase_image efs
    mount_part efs mtdblock4 yaffs2
    /tmp/busybox cp -a /mnt/sdcard/backup/efs /
    /tmp/busybox chmod 0755 /efs
    /tmp/busybox umount -l /efs
}

#check if the device is MTD or not
if [ $(/tmp/busybox mount | /tmp/busybox grep "rfs" | /tmp/busybox wc -l) -gt "0" ] ; then
    #the device is not MTD, so a reboot will be needed
    #mount cache and clear recovery
    mount_part mnt/sdcard mmcblk0p1 vfat

    mount_part cache stl11 rfs

    if ! [ -d /cache/recovery ] ; then
        /tmp/busybox mkdir /cache/recovery
    else
        /tmp/busybox rm -rf /cache/recovery/extendedcommand
    fi

    #backup /efs
    mount_part efs stl3 rfs
    backup_efs

    /tmp/busybox rm -rf /mnt/sdcard/clockworkmod/.settings

    #reboot and restart flash
    if [ -n "$UPDATE_PACKAGE" ] ; then
        PACKAGE_LOCATION=${UPDATE_PACKAGE#/mnt}
        /tmp/busybox echo "$PACKAGE_LOCATION" > /mnt/sdcard/cyanogenmod.cfg
    fi

    /tmp/busybox sync
    /tmp/busybox reboot now
else
    #the device is MTD, so check if it is CM7 or not
    if /tmp/busybox test `/tmp/busybox cat /sys/class/mtd/mtd2/size` != 262144000 ; then
        #the device is CM7, so a reboot will be necesary

        /tmp/busybox rm -rf /mnt/sdcard/clockworkmod/.settings

        #mount sdcard
        mount_part mnt/sdcard mmcblk0p1 vfat

        mount_part system mtdblock2 yaffs2
        /tmp/busybox rm -f /system/build.prop
        /tmp/busybox umount -l /system

        #reboot and restart flash
        if /tmp/busybox [ -n "$UPDATE_PACKAGE" ] ; then
        /tmp/busybox echo "$UPDATE_PACKAGE" > /mnt/sdcard/cyanogenmod.cfg
        fi

        /tmp/busybox sync
        /sbin/reboot now
    else
        #the device is not CM7, so cleanup and restore efs
        mount_part mnt/sdcard mmcblk0p1 vfat
        #prevent the device from looping
        /tmp/busybox rm -rf /mnt/sdcard/cyanogenmod.cfg
        #restore /efs
        restore_efs
    fi
fi
/tmp/busybox umount -l /mnt/sdcard