#!/bin/bash
#======================================================================================
# Function: Update openwrt to emmc for Amlogic S9xxx STB
# Copyright (C) 2020-- https://github.com/unifreq/openwrt_packit
# Copyright (C) 2021-- https://github.com/ophub/luci-app-amlogic
#======================================================================================
#
# The script supports directly setting parameters for update, skipping interactive selection
# openwrt-update-amlogic ${OPENWRT_FILE} ${AUTO_MAINLINE_UBOOT} ${RESTORE_CONFIG}
# E.g: openwrt-update-amlogic openwrt_s905d.img.gz yes restore
# E.g: openwrt-update-amlogic openwrt_s905d.img.gz no no-restore

# You can also execute the script directly, and interactively select related functions
# E.g: openwrt-update-amlogic
#
#======================================================================================

# Encountered a serious error, abort the script execution
error_msg() {
    echo -e "[ERROR] ${1}"
    exit 1
}

# Get the partition name of the root file system
get_root_partition_name() {
    local paths=("/" "/overlay" "/rom")
    local partition_name

    for path in "${paths[@]}"; do
        partition_name=$(df "${path}" | awk 'NR==2 {print $1}' | awk -F '/' '{print $3}')
        [[ -n "${partition_name}" ]] && break
    done

    [[ -z "${partition_name}" ]] && error_msg "Cannot find the root partition!"
    echo "${partition_name}"
}

# Get the partition message of the root file system
get_root_partition_msg() {
    local paths=("/" "/overlay" "/rom")
    local partition_name

    for path in "${paths[@]}"; do
        partition_msg=$(lsblk -l -o NAME,PATH,TYPE,UUID,MOUNTPOINT | awk '$3~/^part$/ && $5 ~ "^" "'"${path}"'" "$" {print $0}')
        [[ -n "${partition_msg}" ]] && break
    done

    [[ -z "${partition_msg}" ]] && error_msg "Cannot find the root partition message!"
    echo "${partition_msg}"
}

# Receive one-key command related parameters
IMG_NAME="${1}"
AUTO_MAINLINE_UBOOT="${2}"
BACKUP_RESTORE_CONFIG="${3}"

# Current device model
MYDEVICE_NAME=$(cat /proc/device-tree/model | tr -d '\000')
if [[ -z "${MYDEVICE_NAME}" ]]; then
    error_msg "The device name is empty and cannot be recognized."
elif [[ ! -f "/etc/flippy-openwrt-release" ]]; then
    error_msg "The [ /etc/flippy-openwrt-release ] file is missing."
else
    echo -e "Current device: ${MYDEVICE_NAME} [ amlogic ]"
    sleep 3
fi

# Find the partition where root is located
ROOT_PTNAME="$(get_root_partition_name)"

# Find the disk where the partition is located, only supports mmcblk?p? sd?? hd?? vd?? and other formats
case ${ROOT_PTNAME} in
mmcblk?p[1-4])
    EMMC_NAME=$(echo ${ROOT_PTNAME} | awk '{print substr($1, 1, length($1)-2)}')
    if lsblk -l -o NAME | grep "${EMMC_NAME}boot0" >/dev/null; then
        ROOT_DISK_TYPE="EMMC"
    else
        ROOT_DISK_TYPE="SD"
    fi
    PARTITION_NAME="p"
    LB_PRE="${ROOT_DISK_TYPE}_"
    ;;
[hsv]d[a-z][1-4])
    EMMC_NAME=$(echo ${ROOT_PTNAME} | awk '{print substr($1, 1, length($1)-1)}')
    ROOT_DISK_TYPE="USB"
    PARTITION_NAME=""
    LB_PRE="${ROOT_DISK_TYPE}_"
    ;;
*)
    error_msg "Unable to recognize the disk type of ${ROOT_PTNAME}!"
    ;;
esac

DOCKER_ROOT="/mnt/${EMMC_NAME}${PARTITION_NAME}4/docker/"
cd /mnt/${EMMC_NAME}${PARTITION_NAME}4/
mv -f /tmp/upload/* . 2>/dev/null && sync

if [[ "${IMG_NAME}" == *.img ]]; then
    echo -e "Update using [ ${IMG_NAME} ] file. Please wait a moment ..."
elif [ $(ls *.img -l 2>/dev/null | grep "^-" | wc -l) -ge 1 ]; then
    IMG_NAME=$(ls *.img | head -n 1)
    echo -e "Update using [ ${IMG_NAME} ] ] file. Please wait a moment ..."
elif [ $(ls *.img.xz -l 2>/dev/null | grep "^-" | wc -l) -ge 1 ]; then
    xz_file=$(ls *.img.xz | head -n 1)
    echo -e "Update using [ ${xz_file} ] file. Please wait a moment ..."
    xz -d ${xz_file} 2>/dev/null
    IMG_NAME=$(ls *.img | head -n 1)
elif [ $(ls *.img.gz -l 2>/dev/null | grep "^-" | wc -l) -ge 1 ]; then
    gz_file=$(ls *.img.gz | head -n 1)
    echo -e "Update using [ ${gz_file} ] file. Please wait a moment ..."
    gzip -df ${gz_file} 2>/dev/null
    IMG_NAME=$(ls *.img | head -n 1)
elif [ $(ls *.7z -l 2>/dev/null | grep "^-" | wc -l) -ge 1 ]; then
    gz_file=$(ls *.7z | head -n 1)
    echo -e "Update using [ ${gz_file} ] file. Please wait a moment ..."
    bsdtar -xmf ${gz_file} 2>/dev/null
    [ $? -eq 0 ] || 7z x ${gz_file} -aoa -y 2>/dev/null
    IMG_NAME=$(ls *.img | head -n 1)
elif [ $(ls *.zip -l 2>/dev/null | grep "^-" | wc -l) -ge 1 ]; then
    zip_file=$(ls *.zip | head -n 1)
    echo -e "Update using [ ${zip_file} ] file. Please wait a moment ..."
    unzip -o ${zip_file} 2>/dev/null
    IMG_NAME=$(ls *.img | head -n 1)
else
    echo -e "Please upload or specify the update openwrt firmware file."
    echo -e "Upload method: system menu → Amlogic Service → Manually Upload Update"
    echo -e "Specify method: Place the openwrt firmware file in [ /mnt/${EMMC_NAME}${PARTITION_NAME}4/ ]"
    echo -e "The supported file suffixes are: *.img, *.img.xz, *.img.gz, *.7z, *.zip"
    echo -e "After upload the openwrt firmware file, run again."
    exit 1
fi
sync

# check file
if [ ! -f "${IMG_NAME}" ]; then
    error_msg "No update file found."
else
    echo "Start update from [ ${IMG_NAME} ]"
fi

# Check the necessary dependencies
DEPENDS="lsblk uuidgen grep awk btrfs mkfs.fat mkfs.btrfs md5sum fatlabel"
echo "Check the necessary dependencies..."
for dep in ${DEPENDS}; do
    WITCH=$(busybox which ${dep})
    if [ "${WITCH}" == "" ]; then
        error_msg "Dependent command: ${dep} does not exist, upgrade cannot be performed, only flash through U disk/TF card!"
    else
        echo "${dep} path: ${WITCH}"
    fi
done
echo "Check passed"

# find boot partition
BOOT_PART_MSG=$(lsblk -l -o NAME,PATH,TYPE,UUID,MOUNTPOINT | awk '$3~/^part$/ && $5 ~ /^\/boot$/ {print $0}')
if [ "${BOOT_PART_MSG}" == "" ]; then
    error_msg "Boot The partition does not exist, so the update cannot be continued!"
fi
BOOT_NAME=$(echo ${BOOT_PART_MSG} | awk '{print $1}')
BOOT_PATH=$(echo ${BOOT_PART_MSG} | awk '{print $2}')
BOOT_UUID=$(echo ${BOOT_PART_MSG} | awk '{print $4}')

BR_FLAG=1
echo -ne "Whether to backup and restore the current config files? y/n [y]\b\b"
if [[ ${BACKUP_RESTORE_CONFIG} == "restore" ]]; then
    yn="y"
elif [[ ${BACKUP_RESTORE_CONFIG} == "no-restore" ]]; then
    yn="n"
else
    read yn
fi
case $yn in
n* | N*)
    BR_FLAG=0
    ;;
esac

# find root partition
ROOT_PART_MSG="$(get_root_partition_msg)"
ROOT_NAME=$(echo ${ROOT_PART_MSG} | awk '{print $1}')
ROOT_PATH=$(echo ${ROOT_PART_MSG} | awk '{print $2}')
ROOT_UUID=$(echo ${ROOT_PART_MSG} | awk '{print $4}')

case ${ROOT_NAME} in
${EMMC_NAME}${PARTITION_NAME}2)
    NEW_ROOT_NAME="${EMMC_NAME}${PARTITION_NAME}3"
    NEW_ROOT_LABEL="${LB_PRE}ROOTFS2"
    ;;
${EMMC_NAME}${PARTITION_NAME}3)
    NEW_ROOT_NAME="${EMMC_NAME}${PARTITION_NAME}2"
    NEW_ROOT_LABEL="${LB_PRE}ROOTFS1"
    ;;
*)
    error_msg "ROOTFS The partition location is incorrect, so the update cannot continue!"
    ;;
esac
echo "NEW_ROOT_NAME: [ ${NEW_ROOT_NAME} ]"

# find new root partition
NEW_ROOT_PART_MSG=$(lsblk -l -o NAME,PATH,TYPE,UUID,MOUNTPOINT | grep "${NEW_ROOT_NAME}" | awk '$3 ~ /^part$/ && $5 !~ /^\/$/ && $5 !~ /^\/boot$/ {print $0}')
if [ "${NEW_ROOT_PART_MSG}" == "" ]; then
    error_msg "The new ROOTFS partition does not exist, so the update cannot continue!"
fi
NEW_ROOT_NAME=$(echo ${NEW_ROOT_PART_MSG} | awk '{print $1}')
NEW_ROOT_PATH=$(echo ${NEW_ROOT_PART_MSG} | awk '{print $2}')
NEW_ROOT_UUID=$(echo ${NEW_ROOT_PART_MSG} | awk '{print $4}')
NEW_ROOT_MP=$(echo ${NEW_ROOT_PART_MSG} | awk '{print $5}')
echo "NEW_ROOT_MP: [ ${NEW_ROOT_MP} ]"

# backup old bootloader
if [ ! -f /root/BackupOldBootloader.img ]; then
    echo "Backup bootloader -> [ BackupOldBootloader.img ] ... "
    dd if=/dev/${EMMC_NAME} of=/root/BackupOldBootloader.img bs=1M count=4 conv=fsync
    echo "Backup bootloader complete."
    echo
fi

# losetup
losetup -f -P ${IMG_NAME}
if [ ${?} -eq 0 ]; then
    LOOP_DEV=$(losetup | grep "${IMG_NAME}" | awk '{print $1}')
    if [ "${LOOP_DEV}" == "" ]; then
        error_msg "loop device not found!"
    fi
else
    error_msg "losetup [ ${IMG_FILE} ] failed!"
fi

# fix loopdev issue in kernel 5.19
function fix_loopdev() {
    local parentdev=${1##*/}
    if [ ! -d /sys/block/${parentdev} ]; then
        return
    fi
    subdevs=$(lsblk -l -o NAME | grep -E "^${parentdev}.+\$")
    for subdev in ${subdevs}; do
        if [ ! -d /sys/block/${parentdev}/${subdev} ]; then
            return
        elif [ -b /dev/${sub_dev} ]; then
            continue
        fi
        source /sys/block/${parentdev}/${subdev}/uevent
        mknod /dev/${subdev} b ${MAJOR} ${MINOR}
        unset MAJOR MINOR DEVNAME DEVTYPE DISKSEQ PARTN PARTNAME
    done
}
fix_loopdev ${LOOP_DEV}

WAIT=3
echo "The loopdev is [ $LOOP_DEV ], wait [ ${WAIT} ] seconds. "
while [[ "${WAIT}" -ge "1" ]]; do
    sleep 1
    WAIT=$((WAIT - 1))
done

# umount loop devices (openwrt will auto mount some partition)
MOUNTED_DEVS=$(lsblk -l -o NAME,PATH,MOUNTPOINT | grep "${LOOP_DEV}" | awk '$3 !~ /^$/ {print $2}')
for dev in ${MOUNTED_DEVS}; do
    while :; do
        echo "umount [ ${dev} ] ... "
        umount -f ${dev}
        sleep 1
        mnt=$(lsblk -l -o NAME,PATH,MOUNTPOINT | grep "${dev}" | awk '$3 !~ /^$/ {print $2}')
        if [ "${mnt}" == "" ]; then
            break
        else
            echo "Retry ..."
        fi
    done
done

# mount src part
WORK_DIR=${PWD}
P1=${WORK_DIR}/boot
P2=${WORK_DIR}/root
mkdir -p $P1 $P2

echo "Mount [ ${LOOP_DEV}p1 ] -> [ ${P1} ] ... "
mount -t vfat -o ro ${LOOP_DEV}p1 ${P1}
if [ $? -ne 0 ]; then
    echo "Mount p1 [ ${LOOP_DEV}p1 ] failed!"
    losetup -D
    exit 1
fi

echo "Mount [ ${LOOP_DEV}p2 ] -> [ ${P2} ] ... "
ZSTD_LEVEL=6
mount -t btrfs -o ro,compress=zstd:${ZSTD_LEVEL} ${LOOP_DEV}p2 ${P2}
if [ $? -ne 0 ]; then
    echo "Mount p2 [ ${LOOP_DEV}p2 ] failed!"
    umount -f ${P1}
    losetup -D
    exit 1
fi

# Prepare the dockerman config file
if [ -f ${P2}/etc/init.d/dockerman ] && [ -f ${P2}/etc/config/dockerd ]; then

    flg=0
    # get current docker data root
    data_root=$(uci get dockerd.globals.data_root 2>/dev/null)
    if [ "${data_root}" == "" ]; then
        flg=1
        # get current config from /etc/docker/daemon.json
        if [ -f "/etc/docker/daemon.json" ] && [ -x "/usr/bin/jq" ]; then
            data_root=$(jq -r '."data-root"' /etc/docker/daemon.json)

            bip=$(jq -r '."bip"' /etc/docker/daemon.json)
            [ "${bip}" == "null" ] && bip="172.31.0.1/24"

            log_level=$(jq -r '."log-level"' /etc/docker/daemon.json)
            [ "${log_level}" == "null" ] && log_level="warn"

            _iptables=$(jq -r '."iptables"' /etc/docker/daemon.json)
            [ "${_iptables}" == "null" ] && _iptables="true"

            registry_mirrors=$(jq -r '."registry-mirrors"[]' /etc/docker/daemon.json 2>/dev/null)
        fi
    fi

    if [ "${data_root}" == "" ]; then
        data_root="/opt/docker/" # the default data root
    fi

    if ! uci get dockerd.globals >/dev/null 2>&1; then
        uci set dockerd.globals='globals'
        uci commit
    fi

    # delete alter config , use inner config
    if uci get dockerd.globals.alt_config_file >/dev/null 2>&1; then
        uci delete dockerd.globals.alt_config_file
        uci commit
    fi

    if [ ${flg} -eq 1 ]; then
        uci set dockerd.globals.data_root=${data_root}
        [ "${bip}" != "" ] && uci set dockerd.globals.bip=${bip}
        [ "${log_level}" != "" ] && uci set dockerd.globals.log_level=${log_level}
        [ "${_iptables}" != "" ] && uci set dockerd.globals.iptables=${_iptables}
        if [ "${registry_mirrors}" != "" ]; then
            for reg in ${registry_mirrors}; do
                uci add_list dockerd.globals.registry_mirrors=${reg}
            done
        fi
        uci set dockerd.globals.auto_start='1'
        uci commit
    fi
fi

#update version prompt
source /boot/uEnv.txt 2>/dev/null
CUR_FDTFILE=${FDT}
echo -e "FDT Value [ ${CUR_FDTFILE} ]"
cp /boot/uEnv.txt /tmp/uEnv.txt && sync

K510="1"
[[ "$(hexdump -n 15 -x "${P1}/zImage" 2>/dev/null | head -n 1 | awk '{print $7}')" == "0108" ]] && K510="0"
echo -e "K510 [ ${K510} ]"

# flippy-openwrt-release info
UBOOT_OVERLOAD=""
MAINLINE_UBOOT=""
ANDROID_UBOOT=""
env_openwrt_file=""

if [ -f "${P2}/etc/flippy-openwrt-release" ]; then
    env_openwrt_file="${P2}/etc/flippy-openwrt-release"
elif [ -f "/etc/flippy-openwrt-release" ]; then
    env_openwrt_file="/etc/flippy-openwrt-release"
else
    env_openwrt_file=""
fi

if [ -n "${env_openwrt_file}" ]; then
    source "${env_openwrt_file}" 2>/dev/null
    # Update the parameters used
    UBOOT_OVERLOAD=${UBOOT_OVERLOAD}
    MAINLINE_UBOOT=${MAINLINE_UBOOT}
    ANDROID_UBOOT=${ANDROID_UBOOT}

    # Unused parameters
    FDTFILE=${FDTFILE}
    U_BOOT_EXT=${U_BOOT_EXT}
    KERNEL_VERSION=${KERNEL_VERSION}
    SOC=${SOC}
fi

#format NEW_ROOT
echo "umount [ ${NEW_ROOT_MP} ]"
umount -f "${NEW_ROOT_MP}"
if [[ "${?}" -ne "0" ]]; then
    echo "Umount [ ${NEW_ROOT_MP} ] failed, Please restart and try again!"
    umount -f ${P1}
    umount -f ${P2}
    losetup -D
    exit 1
fi

# check and fix partition
function check_and_fix_partition() {
    local target_dev_name=${1}  # mmcblk2
    local target_pt_name=${2}   # p2
    local target_pt_idx=${3}    # 2
    local safe_pt_begin_mb=${4} # 800
    local safe_pt_begin_byte=$((${safe_pt_begin_mb} * 1024 * 1024))

    local cur_pt_begin_sector=$(fdisk -l /dev/${target_dev_name} | grep ${target_dev_name}${target_pt_name} | awk '{printf $2}')
    local cur_pt_begin_mb=$((${cur_pt_begin_sector} * 512 / 1024 / 1024))

    if [ ${cur_pt_begin_mb} -ge ${safe_pt_begin_mb} ]; then
        # check pass
        return
    fi

    local cur_pt_end_sector=$(fdisk -l /dev/${target_dev_name} | grep ${target_dev_name}${target_pt_name} | awk '{printf $3}')
    local cur_pt_end_byte=$(((${cur_pt_end_sector} + 1) * 512 - 1))

    echo "Unsafe partition found, repairing ... "
    parted /dev/${target_dev_name} rm ${target_pt_idx} ||
        (
            error_msg "rm partion ${target_pt_idx} failed"
        )
    parted /dev/${target_dev_name} mkpart primary btrfs "${safe_pt_begin_byte}b" "${cur_pt_end_byte}b" ||
        (
            error_msg "create new partion ${target_pt_idx} failed"
        )
    echo "Partition repaired"
}

# check if need fix partition
if [ "${NEW_ROOT_NAME}" == "mmcblk2p2" ]; then
    if [ "${MYDEVICE_NAME}" == "Phicomm N1" ] || [ "${MYDEVICE_NAME}" == "Octopus Planet" ]; then
        # 最新研究结果:
        #     Phicomm N1当采用官方 "天天链" 固件底包时，
        #     796MB开始的 12 字节在每次重启后会被 bootloader 覆写,
        #     因此把安全位置设定在800MB之后
        # The latest research results:
        #     When Phicomm N1 uses the official "tian tian lian" firmware bottom package,
        #     the 12 bytes starting from 796MB will be overwritten by bootloader after each reboot,
        #     so the safe location is set after 800MB
        SAFE_PT_BEGIN_MB=800
        check_and_fix_partition "${EMMC_NAME}" "p2" 2 ${SAFE_PT_BEGIN_MB}
    fi
fi

echo "Format [ ${NEW_ROOT_PATH} ]"
NEW_ROOT_UUID=$(uuidgen)
mkfs.btrfs -f -U ${NEW_ROOT_UUID} -L ${NEW_ROOT_LABEL} -m single ${NEW_ROOT_PATH}
if [ $? -ne 0 ]; then
    echo "Format [ ${NEW_ROOT_PATH} ] failed!"
    umount -f ${P1}
    umount -f ${P2}
    losetup -D
    exit 1
fi

echo "Mount [ ${NEW_ROOT_PATH} ] -> [ ${NEW_ROOT_MP} ]"
mount -t btrfs -o compress=zstd:${ZSTD_LEVEL} ${NEW_ROOT_PATH} ${NEW_ROOT_MP}
if [ $? -ne 0 ]; then
    echo "Mount [ ${NEW_ROOT_PATH} ] -> [ ${NEW_ROOT_MP} ] failed!"
    umount -f ${P1}
    umount -f ${P2}
    losetup -D
    exit 1
fi

# begin copy rootfs
cd ${NEW_ROOT_MP}
echo "Start copying data， From [ ${P2} ] TO [ ${NEW_ROOT_MP} ] ..."
ENTRYS=$(ls)
for entry in ${ENTRYS}; do
    if [[ "${entry}" == "lost+found" ]]; then
        continue
    fi
    echo "Remove old [ ${entry} ] ... "
    rm -rf ${entry}
    if [[ "${?}" -ne "0" ]]; then
        error_msg "failed."
    fi
done

echo "Create folder ... "
btrfs subvolume create etc
mkdir -p .snapshots .reserved bin boot dev lib opt mnt overlay proc rom root run sbin sys tmp usr www
ln -sf lib/ lib64
ln -sf tmp/ var
sync

COPY_SRC="root etc bin sbin lib opt usr www"
echo "Copy data begin ... "
for src in ${COPY_SRC}; do
    echo "Copy [ ${src} ] ... "
    (cd ${P2} && tar cf - ${src}) | tar xf -
    sync
done

# if not backup, then force rewrite the etc/docker/daemon.json
if [ "${BR_FLAG}" -eq 0 ]; then
    cat >./etc/docker/daemon.json <<EOF
{
  "bip": "172.31.0.1/24",
  "data-root": "${DOCKER_ROOT}",
  "log-level": "warn",
  "log-driver": "json-file",
  "log-opts": {
     "max-size": "10m",
     "max-file": "5"
   },
  "registry-mirrors": [
     "https://mirror.baidubce.com/",
     "https://hub-mirror.c.163.com"
   ]
}
EOF
fi

cat >./etc/fstab <<EOF
UUID=${NEW_ROOT_UUID} / btrfs compress=zstd:${ZSTD_LEVEL} 0 1
LABEL=${LB_PRE}BOOT /boot vfat defaults 0 2
#tmpfs /tmp tmpfs defaults,nosuid 0 0
EOF

cat >./etc/config/fstab <<EOF
config  global
        option anon_swap '0'
        option anon_mount '1'
        option auto_swap '0'
        option auto_mount '1'
        option delay_root '5'
        option check_fs '0'

config  mount
        option target '/rom'
        option uuid '${NEW_ROOT_UUID}'
        option enabled '1'
        option enabled_fsck '1'
        option fstype 'btrfs'
        option options 'compress=zstd:${ZSTD_LEVEL}'

config  mount
        option target '/boot'
        option label '${LB_PRE}BOOT'
        option enabled '1'
        option enabled_fsck '1'
        option fstype 'vfat'

EOF
(
    cd etc/rc.d
    rm -f S??shortcut-fe
    if grep "sfe_flow '1'" ../config/turboacc >/dev/null; then
        if find ../../lib/modules -name 'shortcut-fe-cm.ko'; then
            ln -sf ../init.d/shortcut-fe S99shortcut-fe
        fi
    fi
)
# move /etc/config/balance_irq to /etc/balance_irq
[ -f "./etc/config/balance_irq" ] && mv ./etc/config/balance_irq ./etc/
sync

echo "Create initial etc snapshot -> .snapshots/etc-000"
btrfs subvolume snapshot -r etc .snapshots/etc-000
sync

[ -d /mnt/${EMMC_NAME}${PARTITION_NAME}4/docker ] || mkdir -p /mnt/${EMMC_NAME}${PARTITION_NAME}4/docker
rm -rf opt/docker && ln -sf /mnt/${EMMC_NAME}${PARTITION_NAME}4/docker/ opt/docker

if [ -f /mnt/${NEW_ROOT_NAME}/etc/config/AdGuardHome ]; then
    [ -d /mnt/${EMMC_NAME}${PARTITION_NAME}4/AdGuardHome/data ] || mkdir -p /mnt/${EMMC_NAME}${PARTITION_NAME}4/AdGuardHome/data
    if [ ! -L /usr/bin/AdGuardHome ]; then
        [ -d /usr/bin/AdGuardHome ] &&
            cp -a /usr/bin/AdGuardHome/* /mnt/${EMMC_NAME}${PARTITION_NAME}4/AdGuardHome/
    fi
    ln -sf /mnt/${EMMC_NAME}${PARTITION_NAME}4/AdGuardHome /mnt/${NEW_ROOT_NAME}/usr/bin/AdGuardHome
fi

#rm -f /mnt/${NEW_ROOT_NAME}/usr/sbin/openwrt-install-amlogic
#rm -f /mnt/${NEW_ROOT_NAME}/usr/sbin/openwrt-update-amlogic
rm -f /mnt/${NEW_ROOT_NAME}/root/install-to-emmc.sh
sync
echo "Copy data complete ..."

BACKUP_LIST=$(${P2}/usr/sbin/openwrt-backup -p)
BACKUP_LIST="${BACKUP_LIST} /etc/nikki"
if [[ "${BR_FLAG}" -eq "1" && -n "${BACKUP_LIST}" ]]; then
    echo -n "Start restoring configuration files ... "
    (
        cd /
        eval tar czf ${NEW_ROOT_MP}/.reserved/openwrt_config.tar.gz "${BACKUP_LIST}" 2>/dev/null
    )
    tar xzf ${NEW_ROOT_MP}/.reserved/openwrt_config.tar.gz

    [ -f ./etc/config/dockerman ] && sed -e "s/option wan_mode 'false'/option wan_mode 'true'/" -i ./etc/config/dockerman 2>/dev/null
    [ -f ./etc/config/dockerd ] && sed -e "s/option wan_mode '0'/option wan_mode '1'/" -i ./etc/config/dockerd 2>/dev/null
    [ -f ./etc/config/verysync ] && sed -e 's/config setting/config verysync/' -i ./etc/config/verysync 2>/dev/null

    # Restore fstab
    cp -f .snapshots/etc-000/fstab ./etc/fstab
    cp -f .snapshots/etc-000/config/fstab ./etc/config/fstab
    # 还原 luci
    cp -f .snapshots/etc-000/config/luci ./etc/config/luci
    # 还原/etc/config/rpcd
    cp -f .snapshots/etc-000/config/rpcd ./etc/config/rpcd

    sync
    echo "Restore configuration information complete."
fi

echo "Modify the configuration file ... "
rm -f "./etc/rc.local.orig" "./etc/first_run.sh" "./etc/part_size"
rm -rf "./opt/docker" && ln -sf "/mnt/${EMMC_NAME}${PARTITION_NAME}4/docker" "./opt/docker"
rm -f ./etc/bench.log
cat >>./etc/crontabs/root <<EOF
37 5 * * * /etc/coremark.sh
EOF

sed -e 's/ttyAMA0/ttyAML0/' -i ./etc/inittab
sed -e 's/ttyS0/tty0/' -i ./etc/inittab
sss=$(date +%s)
ddd=$((sss / 86400))
sed -e "s/:0:0:99999:7:::/:${ddd}:0:99999:7:::/" -i ./etc/shadow
# Fix the problem of repeatedly adding amule entries after each upgrade
sed -e "/amule:x:/d" -i ./etc/shadow
# Fix the problem of repeatedly adding sshd entries after each upgrade of dropbear
sed -e "/sshd:x:/d" -i ./etc/shadow
if ! grep "sshd:x:22:sshd" ./etc/group >/dev/null; then
    echo "sshd:x:22:sshd" >>./etc/group
fi
if ! grep "sshd:x:22:22:sshd:" ./etc/passwd >/dev/null; then
    echo "sshd:x:22:22:sshd:/var/run/sshd:/bin/false" >>./etc/passwd
fi
if ! grep "sshd:x:" ./etc/shadow >/dev/null; then
    echo "sshd:x:${ddd}:0:99999:7:::" >>./etc/shadow
fi

if [ "${BR_FLAG}" -eq "1" ]; then
    if [ -x ./bin/bash ] && [ -f ./etc/profile.d/30-sysinfo.sh ]; then
        sed -e 's/\/bin\/ash/\/bin\/bash/' -i ./etc/passwd
    fi
    sync
fi
sed -e "s/option hw_flow '1'/option hw_flow '0'/" -i ./etc/config/turboacc
(
    cd etc/rc.d
    rm -f S??shortcut-fe
    if grep "sfe_flow '1'" ../config/turboacc >/dev/null; then
        if find ../../lib/modules -name 'shortcut-fe-cm.ko'; then
            ln -sf ../init.d/shortcut-fe S99shortcut-fe
        fi
    fi
)
eval tar czf .reserved/openwrt_config.tar.gz "${BACKUP_LIST}" 2>/dev/null

rm -f ./etc/part_size ./etc/first_run.sh
if [ -x ./usr/sbin/balethirq.pl ]; then
    if grep "balethirq.pl" "./etc/rc.local"; then
        echo "balance irq is enabled"
    else
        echo "enable balance irq"
        sed -e "/exit/i\/usr/sbin/balethirq.pl" -i ./etc/rc.local
    fi
fi

mv ./etc/rc.local ./etc/rc.local.orig
cat >"./etc/rc.local" <<EOF
if ! ls /etc/rc.d/S??dockerd >/dev/null 2>&1;then
    /etc/init.d/dockerd enable
    /etc/init.d/dockerd start
fi
if ! ls /etc/rc.d/S??dockerman >/dev/null 2>&1 && [ -f /etc/init.d/dockerman ];then
    /etc/init.d/dockerman enable
    /etc/init.d/dockerman start
fi
mv /etc/rc.local.orig /etc/rc.local
chmod 755 /etc/rc.local
exec /etc/rc.local
exit
EOF
chmod 755 ./etc/rc.local*

#Mainline U-BOOT detection
FLASH_MAINLINE_UBOOT=0
if [[ -n "${MAINLINE_UBOOT}" && -f "${P2}${MAINLINE_UBOOT}" ]]; then
    cat <<EOF
----------------------------------------------------------------------------------
Found an available mainline bootloader (Mainline u-boot), you can flash into EMMC.
----------------------------------------------------------------------------------
EOF
    while :; do
        if [[ "${AUTO_MAINLINE_UBOOT}" == "yes" ]]; then
            if [[ "${K510}" -eq "1" ]]; then
                yn="y"
            else
                yn="n"
            fi
        elif [[ "${AUTO_MAINLINE_UBOOT}" == "no" ]]; then
            yn="n"
        else
            read -p "Please choose whether to write the mainline bootloader to EMMC?  y/n " yn
        fi

        case ${yn} in
        y | Y)
            FLASH_MAINLINE_UBOOT=1
            break
            ;;
        n | N)
            FLASH_MAINLINE_UBOOT=0
            break
            ;;
        esac
    done
fi

if [[ "${FLASH_MAINLINE_UBOOT}" -eq "1" ]]; then
    echo -e "Write Mainline bootloader: [ ${MAINLINE_UBOOT} ]"
    dd if=${P2}${MAINLINE_UBOOT} of=/dev/${EMMC_NAME} bs=1 count=444 conv=fsync
    dd if=${P2}${MAINLINE_UBOOT} of=/dev/${EMMC_NAME} bs=512 skip=1 seek=1 conv=fsync
elif [[ -n "${ANDROID_UBOOT}" && -f "${P2}${ANDROID_UBOOT}" ]]; then
    echo -e "Write Android bootloader: [ ${ANDROID_UBOOT} ]"
    dd if=${P2}${ANDROID_UBOOT} of=/dev/${EMMC_NAME} bs=1 count=444 conv=fsync
    dd if=${P2}${ANDROID_UBOOT} of=/dev/${EMMC_NAME} bs=512 skip=1 seek=1 conv=fsync
else
    echo "Did not change the original bootloader."
fi

# move /etc/config/balance_irq to /etc/balance_irq
[ -f "./etc/config/balance_irq" ] && mv ./etc/config/balance_irq ./etc/

echo "Create etc snapshot -> .snapshots/etc-001"
btrfs subvolume snapshot -r etc .snapshots/etc-001

cd ${WORK_DIR}

echo "Change the label of ${BOOT_PATH} ... "
fatlabel ${BOOT_PATH} "${LB_PRE}BOOT"
echo "Start copying data， from [ ${P1} ] to [ /boot ] ..."
cd /boot
echo "Delete the old boot file ..."
rm -rf * && sync

echo "Copy the new boot file ... "
(cd ${P1} && tar cf - .) | tar xf - 2>/dev/null
sync

if [ -f ${P1}/uInitrd ]; then
    i=1
    max_try=10
    while [ "${i}" -le "${max_try}" ]; do
        uInitrd_original=$(md5sum ${P1}/uInitrd | awk '{print $1}')
        uInitrd_new=$(md5sum uInitrd | awk '{print $1}')
        if [ "${uInitrd_original}" = "${uInitrd_new}" ]; then
            break
        else
            rm -f uInitrd && sync
            cp -f ${P1}/uInitrd uInitrd 2>/dev/null && sync
            let i++
            continue
        fi
    done
    [ "${i}" -eq "10" ] && error_msg "uInitrd file copy failed."
else
    echo "uInitrd file is missing."
fi

if [ -f ${P1}/zImage ]; then
    i=1
    max_try=10
    while [ "${i}" -le "${max_try}" ]; do
        zImage_original=$(md5sum ${P1}/zImage | awk '{print $1}')
        zImage_new=$(md5sum zImage | awk '{print $1}')
        if [ "${zImage_original}" = "${zImage_new}" ]; then
            break
        else
            rm -f zImage && sync
            cp -f ${P1}/zImage zImage 2>/dev/null && sync
            let i++
            continue
        fi
    done
    [ "${i}" -eq "10" ] && error_msg "zImage file copy failed."
else
    error_msg "zImage file is missing."
fi

if [ ${ROOT_DISK_TYPE} == "EMMC" ]; then
    rm -f s905_autoscript* aml_autoscript*
    mv -f boot-emmc.ini boot.ini
    mv -f boot-emmc.cmd boot.cmd
    mv -f boot-emmc.scr boot.scr
fi

if [ "${K510}" -eq "1" ]; then
    if [ -f "u-boot.ext" ]; then
        cp -vf u-boot.ext u-boot.emmc
    elif [ -f ${P1}/${UBOOT_OVERLOAD} ]; then
        cp -vf ${P1}/${UBOOT_OVERLOAD} ${UBOOT_OVERLOAD}
        cp -vf ${P1}/${UBOOT_OVERLOAD} u-boot.ext
        cp -vf ${P1}/${UBOOT_OVERLOAD} u-boot.emmc
        chmod +x u-boot*
    fi
else
    rm -f u-boot.ext 2>/dev/null
    rm -f u-boot.emmc 2>/dev/null
fi

sync

echo "Update boot parameters ... "
if [ -f /tmp/uEnv.txt ]; then
    lines=$(wc -l </tmp/uEnv.txt)
    lines=$((lines - 1))
    head -n $lines /tmp/uEnv.txt >uEnv.txt
    cat >>uEnv.txt <<EOF
APPEND=root=UUID=${NEW_ROOT_UUID} rootfstype=btrfs rootflags=compress=zstd:${ZSTD_LEVEL} console=ttyAML0,115200n8 console=tty0 no_console_suspend consoleblank=0 fsck.fix=yes fsck.repair=yes net.ifnames=0 cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory swapaccount=1
EOF
else
    cat >uEnv.txt <<EOF
LINUX=/zImage
INITRD=/uInitrd
FDT=${CUR_FDTFILE}
APPEND=root=UUID=${NEW_ROOT_UUID} rootfstype=btrfs rootflags=compress=zstd:${ZSTD_LEVEL} console=ttyAML0,115200n8 console=tty0 no_console_suspend consoleblank=0 fsck.fix=yes fsck.repair=yes net.ifnames=0 cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory swapaccount=1
EOF
fi
sync

cd $WORK_DIR
umount -f ${P1} ${P2} 2>/dev/null
losetup -D 2>/dev/null
rm -rf ${P1} ${P2} 2>/dev/null
rm -f ${IMG_NAME} 2>/dev/null
rm -f sha256sums 2>/dev/null
sync
wait

echo "Successfully updated, automatic restarting..."
sleep 3
reboot
exit 0