X-Git-Url: https://glassweightruler.freedombox.rocks/gitweb/Ventoy.git/blobdiff_plain/cd4a5fcb0685b8a12915d22efc5c1e0cc8b40d9b..05bbef63c1951a3e152d69461b893927bf8b1e8a:/IMG/cpio/ventoy/hook/ventoy-hook-lib.sh

diff --git a/IMG/cpio/ventoy/hook/ventoy-hook-lib.sh b/IMG/cpio/ventoy/hook/ventoy-hook-lib.sh
index 7609829..f6d9cb0 100644
--- a/IMG/cpio/ventoy/hook/ventoy-hook-lib.sh
+++ b/IMG/cpio/ventoy/hook/ventoy-hook-lib.sh
@@ -30,6 +30,8 @@ SLEEP=$BUSYBOX_PATH/sleep
 HEAD=$BUSYBOX_PATH/head
 VTOY_DM_PATH=/dev/mapper/ventoy
 VTOY_DEBUG_LEVEL=$($BUSYBOX_PATH/hexdump -n 1 -s 450 -e '1/1 "%02x"' $VTOY_PATH/ventoy_os_param)
+VTOY_LINUX_REMOUNT=$($BUSYBOX_PATH/hexdump -n 1 -s 454 -e '1/1 "%02x"' $VTOY_PATH/ventoy_os_param)
+VTOY_VLNK_BOOT=$($BUSYBOX_PATH/hexdump -n 1 -s 455 -e '1/1 "%02x"' $VTOY_PATH/ventoy_os_param)
 
 if [ "$VTOY_DEBUG_LEVEL" = "01" ]; then
     if [ -e /dev/console ]; then
@@ -57,24 +59,28 @@ vterr() {
 
 
 is_ventoy_hook_finished() {
-	[ -e $VTOY_PATH/hook_finish ]
+    [ -e $VTOY_PATH/hook_finish ]
 }
 
 set_ventoy_hook_finish() {
-	echo 'Y' > $VTOY_PATH/hook_finish
+    echo 'Y' > $VTOY_PATH/hook_finish
 }
 
-get_ventoy_disk_name() {	
-    line=$($VTOY_PATH/tool/vtoydump -f /ventoy/ventoy_os_param)
-    if [ $? -eq 0 ]; then
-        echo ${line%%#*}
-    else    
-        echo "unknown"
+get_ventoy_disk_name() {
+    if [ "$VTOY_VLNK_BOOT" = "01" ]; then
+        $VTOY_PATH/tool/vtoydump -t /ventoy/ventoy_os_param
+    else
+        line=$($VTOY_PATH/tool/vtoydump -f /ventoy/ventoy_os_param)
+        if [ $? -eq 0 ]; then
+            echo ${line%%#*}
+        else    
+            echo "unknown"
+        fi
     fi
 }
 
 get_ventoy_iso_name() {
-	line=$($VTOY_PATH/tool/vtoydump -f /ventoy/ventoy_os_param)
+    line=$($VTOY_PATH/tool/vtoydump -f /ventoy/ventoy_os_param)
     if [ $? -eq 0 ]; then
         echo ${line##*#}
     else    
@@ -83,32 +89,59 @@ get_ventoy_iso_name() {
 }
 
 wait_for_usb_disk_ready() {
-	while [ -n "Y" ]; do
-		usb_disk=$(get_ventoy_disk_name)
+    vtloop=0
+    while [ -n "Y" ]; do
+        usb_disk=$(get_ventoy_disk_name)
         vtlog "wait_for_usb_disk_ready $usb_disk ..."
         
-		if [ -e "${usb_disk}2" ]; then
+        if echo $usb_disk | $EGREP -q "nvme|mmc|nbd"; then
+            vtpart2=${usb_disk}p2
+        else
+            vtpart2=${usb_disk}2
+        fi
+        
+        if [ -e "${vtpart2}" ]; then
             vtlog "wait_for_usb_disk_ready $usb_disk finish"
-			break
-		else
-			$SLEEP 0.3
-		fi
-	done
+            break
+        else
+            let vtloop=vtloop+1
+            if [ $vtloop -gt 2 ]; then
+                if [ "$VTLOG" != "$VTOY_PATH/log" ]; then
+                    $VTOY_PATH/tool/vtoydump -f /ventoy/ventoy_os_param -v > $VTLOG
+                fi
+            fi
+            $SLEEP 0.3
+        fi
+    done
 }
 
-is_ventoy_disk() {
-    if $VTOY_PATH/tool/vtoydump -f $VTOY_PATH/ventoy_os_param -c "$1"; then
-        $BUSYBOX_PATH/true
+
+check_usb_disk_ready() {
+    if echo $1 | $EGREP -q "nvme|mmc|nbd"; then
+        vtpart2=${1}p2
     else
-        $BUSYBOX_PATH/false
+        vtpart2=${1}2
     fi
+    
+    [ -e "${vtpart2}" ]
 }
 
 not_ventoy_disk() {
-    if $VTOY_PATH/tool/vtoydump -f $VTOY_PATH/ventoy_os_param -c "$1"; then
-        $BUSYBOX_PATH/false
+    if echo $1 | $EGREP -q "nvme.*p$|mmc.*p$|nbd.*p$"; then
+        vtDiskName=${1:0:-1}
     else
-        $BUSYBOX_PATH/true
+        vtDiskName=$1
+    fi
+
+    if [ "$VTOY_VLNK_BOOT" = "01" ]; then
+        vtVtoyDisk=$($VTOY_PATH/tool/vtoydump -t $VTOY_PATH/ventoy_os_param)
+        [ "$vtVtoyDisk" != "/dev/$vtDiskName" ]
+    else
+        if $VTOY_PATH/tool/vtoydump -f $VTOY_PATH/ventoy_os_param -c "$vtDiskName"; then
+            $BUSYBOX_PATH/false
+        else
+            $BUSYBOX_PATH/true
+        fi
     fi
 }
 
@@ -190,6 +223,161 @@ ventoy_check_dm_module() {
     fi
 }
 
+ventoy_need_dm_patch() {
+    if [ "$VTOY_LINUX_REMOUNT" != "01" ]; then
+        if $GREP -q 'VTOY_LINUX_REMOUNT=1' /proc/cmdline; then
+            :
+        else
+            $BUSYBOX_PATH/false; return
+        fi
+    fi
+
+    if $GREP -q 'device-mapper' /proc/devices; then
+        :
+    else
+        $BUSYBOX_PATH/false; return
+    fi
+    
+    if $GREP -q 'dm_patch' /proc/modules; then
+        $BUSYBOX_PATH/false; return
+    fi
+    
+    vtMajorVer=$($BUSYBOX_PATH/uname -r | $AWK -F. '{print $1}')
+    vtMinorVer=$($BUSYBOX_PATH/uname -r | $AWK -F. '{print $2}')
+
+    if [ $vtMajorVer -lt 3 ]; then
+        $BUSYBOX_PATH/false; return
+    elif [ $vtMajorVer -eq 3 -a $vtMinorVer -lt 10 ]; then
+        $BUSYBOX_PATH/false; return
+    fi
+    
+    
+    $BUSYBOX_PATH/true
+}
+
+ventoy_dm_patch() {
+    vtMType=$($BUSYBOX_PATH/uname -m)
+
+    vtlog "######### ventoy_dm_patch ############"
+
+    if echo $vtMType | $EGREP -i -q "x86.64|amd64"; then
+        vtKoName=dm_patch_64.ko
+    elif echo $vtMType | $EGREP -i -q "i[3-6]86"; then
+        vtKoName=dm_patch_32.ko
+    else
+        vtlog "unsupported machine type $vtMType"
+        return
+    fi
+
+    if [ -f $VTOY_PATH/tool/$vtKoName ]; then
+        vtlog "/ventoy/tool/$vtKoName exist OK"
+    else
+        vtlog "/ventoy/tool/$vtKoName NOT exist"
+        return
+    fi
+    
+    $CAT /proc/kallsyms | $BUSYBOX_PATH/sort > $VTOY_PATH/kallsyms
+    
+    if $GREP -m1 -q 'open_table_device.isra' $VTOY_PATH/kallsyms; then
+        vtLine=$($VTOY_PATH/tool/vtoyksym open_table_device.isra $VTOY_PATH/kallsyms)
+        vtlog "get open_table_device.isra address $vtLine"
+    else
+        vtLine=$($VTOY_PATH/tool/vtoyksym dm_get_table_device $VTOY_PATH/kallsyms)
+        vtlog "get dm_get_table_device address $vtLine"
+    fi 
+    get_addr=$(echo $vtLine | $AWK '{print $1}')
+    get_size=$(echo $vtLine | $AWK '{print $2}')
+
+    if $GREP -m1 -q 'close_table_device.isra' $VTOY_PATH/kallsyms; then
+        vtLine=$($VTOY_PATH/tool/vtoyksym close_table_device.isra $VTOY_PATH/kallsyms)
+        vtlog "get close_table_device.isra address $vtLine"
+    else
+        vtLine=$($VTOY_PATH/tool/vtoyksym dm_put_table_device $VTOY_PATH/kallsyms)
+        vtlog "get dm_put_table_device address $vtLine"
+    fi
+    put_addr=$(echo $vtLine | $AWK '{print $1}')
+    put_size=$(echo $vtLine | $AWK '{print $2}')
+    
+    ro_addr=$($GREP ' set_memory_ro$' /proc/kallsyms | $AWK '{print $1}')
+    rw_addr=$($GREP ' set_memory_rw$' /proc/kallsyms | $AWK '{print $1}')
+    kprobe_reg_addr=$($GREP ' register_kprobe$' /proc/kallsyms | $AWK '{print $1}')
+    kprobe_unreg_addr=$($GREP ' unregister_kprobe$' /proc/kallsyms | $AWK '{print $1}')
+    
+    if [ "$VTOY_DEBUG_LEVEL" = "01" ]; then
+        printk_addr=$($GREP ' printk$' /proc/kallsyms | $AWK '{print $1}')
+        vtDebug="-v"
+    else
+        printk_addr=0
+    fi
+    
+    #printk_addr=$($GREP ' printk$' /proc/kallsyms | $AWK '{print $1}')
+    #vtDebug="-v"
+    
+    vtlog get_addr=$get_addr  get_size=$get_size
+    vtlog put_addr=$put_addr  put_size=$put_size
+    vtlog kprobe_reg_addr=$kprobe_reg_addr  kprobe_unreg_addr=$kprobe_unreg_addr
+    vtlog ro_addr=$ro_addr  rw_addr=$rw_addr  printk_addr=$printk_addr
+
+    if [ "$get_addr" = "0" -o "$put_addr" = "0" ]; then
+        vtlog "Invalid symbol address"
+        return
+    fi
+    if [ "$ro_addr" = "0" -o "$rw_addr" = "0" ]; then
+        vtlog "Invalid symbol address"
+        return
+    fi
+
+
+    vtKv=$($BUSYBOX_PATH/uname -r)
+    
+    if [ ! -d /lib/modules/$vtKv ]; then
+        vtlog "No modules directory found"
+        return
+    elif [ -d /lib/modules/$vtKv/kernel/fs ]; then
+        vtModPath=$($FIND /lib/modules/$vtKv/kernel/fs/ -name "*.ko*" | $HEAD -n1)
+    else
+        vtModPath=$($FIND /lib/modules/$vtKv/kernel/ -name "xfs.ko*" | $HEAD -n1)
+    fi
+    
+    if [ -z "$vtModPath" ]; then
+        vtModPath=$($FIND /lib/modules/$vtKv/kernel/ -name "*.ko*" | $HEAD -n1)
+    fi
+    
+    vtModName=$($BUSYBOX_PATH/basename $vtModPath)
+    
+    vtlog "template module is $vtModPath $vtModName"
+    
+    if [ -z "$vtModPath" ]; then
+        vtlog "No template module found"
+        return
+    elif echo $vtModPath | $GREP -q "[.]ko$"; then
+        $BUSYBOX_PATH/cp -a $vtModPath  $VTOY_PATH/$vtModName
+    elif echo $vtModPath | $GREP -q "[.]ko[.]xz$"; then
+        $BUSYBOX_PATH/xzcat $vtModPath > $VTOY_PATH/$vtModName
+    elif echo $vtModPath | $GREP -q "[.]ko[.]gz$"; then
+        $BUSYBOX_PATH/zcat $vtModPath > $VTOY_PATH/$vtModName
+    else
+        vtlog "unsupport module type"
+        return
+    fi
+    
+    #step1: modify vermagic/mod crc/relocation
+    vtlog "$VTOY_PATH/tool/vtoykmod -u $VTOY_PATH/tool/$vtKoName $VTOY_PATH/$vtModName $vtDebug"
+    $VTOY_PATH/tool/vtoykmod -u $VTOY_PATH/tool/$vtKoName $VTOY_PATH/$vtModName $vtDebug
+    
+    #step2: fill parameters
+    vtPgsize=$($VTOY_PATH/tool/vtoyksym -p)
+    vtlog "$VTOY_PATH/tool/vtoykmod -f $VTOY_PATH/tool/$vtKoName $vtPgsize 0x$printk_addr 0x$ro_addr 0x$rw_addr $get_addr $get_size $put_addr $put_size 0x$kprobe_reg_addr 0x$kprobe_unreg_addr $vtDebug"
+    $VTOY_PATH/tool/vtoykmod -f $VTOY_PATH/tool/$vtKoName $vtPgsize 0x$printk_addr 0x$ro_addr 0x$rw_addr $get_addr $get_size $put_addr $put_size 0x$kprobe_reg_addr 0x$kprobe_unreg_addr $vtDebug
+
+    $BUSYBOX_PATH/insmod $VTOY_PATH/tool/$vtKoName
+    
+    if $GREP -q 'dm_patch' /proc/modules; then
+        echo "done" > $VTOY_PATH/dm_patch_done
+    fi
+    
+}
+
 create_ventoy_device_mapper() {
     vtlog "create_ventoy_device_mapper $*"
     
@@ -200,21 +388,77 @@ create_ventoy_device_mapper() {
     fi
     
     vtlog "dmsetup avaliable in system $VT_DM_BIN"
-        
+
     if ventoy_check_dm_module "$1"; then
         vtlog "device-mapper module check success"
     else
         vterr "Error: no dm module avaliable"
     fi
     
-    $VTOY_PATH/tool/vtoydm -p -f $VTOY_PATH/ventoy_image_map -d $1 > $VTOY_PATH/ventoy_dm_table        
+    $VTOY_PATH/tool/vtoydm -p -f $VTOY_PATH/ventoy_image_map -d $1 > $VTOY_PATH/ventoy_dm_table
+    
+    
+    vtLevel1=$($CAT /proc/sys/kernel/printk | $AWK '{print $1}')
+    vtLevel2=$($CAT /proc/sys/kernel/printk | $AWK '{print $2}')
+    vtLevel3=$($CAT /proc/sys/kernel/printk | $AWK '{print $3}')
+    vtLevel4=$($CAT /proc/sys/kernel/printk | $AWK '{print $4}')
+    if ventoy_need_dm_patch; then
+        ventoy_dm_patch
+        #suppress printk message
+        echo 0 $vtLevel2 0 $vtLevel4 > /proc/sys/kernel/printk
+    fi
+
     if [ -z "$2" ]; then
         $VT_DM_BIN create ventoy $VTOY_PATH/ventoy_dm_table >>$VTLOG 2>&1
     else
         $VT_DM_BIN "$2" create ventoy $VTOY_PATH/ventoy_dm_table >>$VTLOG 2>&1
-    fi    
+    fi
+
+    if ventoy_need_dm_patch; then    
+        #recover printk level
+        echo $vtLevel1 $vtLevel2 $vtLevel3 $vtLevel4 > /proc/sys/kernel/printk
+    fi
 }
 
+create_persistent_device_mapper() {
+    vtlog "create_persistent_device_mapper $*"
+    
+    VT_DM_BIN=$(ventoy_find_bin_path dmsetup)
+    if [ -z "$VT_DM_BIN" ]; then
+        vtlog "no dmsetup avaliable, lastly try inbox dmsetup"
+        VT_DM_BIN=$VTOY_PATH/tool/dmsetup
+    fi
+    
+    vtlog "dmsetup avaliable in system $VT_DM_BIN"
+        
+    if ventoy_check_dm_module "$1"; then
+        vtlog "device-mapper module check success"
+    else
+        vterr "Error: no dm module avaliable"
+    fi
+    
+    $VTOY_PATH/tool/vtoydm -p -f $VTOY_PATH/ventoy_persistent_map -d $1 > $VTOY_PATH/persistent_dm_table    
+
+
+    vtLevel1=$($CAT /proc/sys/kernel/printk | $AWK '{print $1}')
+    vtLevel2=$($CAT /proc/sys/kernel/printk | $AWK '{print $2}')
+    vtLevel3=$($CAT /proc/sys/kernel/printk | $AWK '{print $3}')
+    vtLevel4=$($CAT /proc/sys/kernel/printk | $AWK '{print $4}')
+    if [ -f $VTOY_PATH/dm_patch_done ]; then
+        #suppress printk message
+        echo 0 $vtLevel2 0 $vtLevel4 > /proc/sys/kernel/printk
+    fi
+    
+    $VT_DM_BIN create vtoy_persistent $VTOY_PATH/persistent_dm_table >>$VTLOG 2>&1
+    
+    if [ -f $VTOY_PATH/dm_patch_done ]; then
+        #recover printk level
+        echo $vtLevel1 $vtLevel2 $vtLevel3 $vtLevel4 > /proc/sys/kernel/printk
+    fi
+}
+
+
+
 wait_for_ventoy_dm_disk_label() {
     DM=$($BUSYBOX_PATH/readlink $VTOY_DM_PATH)    
     vtlog "wait_for_ventoy_dm_disk_label $DM ..."
@@ -226,7 +470,7 @@ wait_for_ventoy_dm_disk_label() {
         if ls -l /dev/disk/by-label/ | $GREP -q "$DM"; then
             break
         else
-            $SLEEP 0.3
+            $SLEEP 1
         fi
     done
 }
@@ -320,6 +564,37 @@ extract_file_from_line() {
     fi
 }
 
+extract_rpm_from_line() {
+    vtlog "extract_rpm_from_line $1 disk=#$2#"
+
+    if ! [ -b "$2" ]; then
+        vterr "disk #$2# not exist"
+        return 
+    fi
+
+    sector=$(echo $1 | $AWK '{print $(NF-1)}')
+    length=$(echo $1 | $AWK '{print $NF}')
+    vtlog "sector=$sector  length=$length"
+    
+    $VTOY_PATH/tool/vtoydm -e -f $VTOY_PATH/ventoy_image_map -d ${2} -s $sector -l $length -o /tmp/xxx.rpm
+    if [ -e /tmp/xxx.rpm ]; then
+        vtlog "extract rpm file from iso success"
+    else
+        vterr "extract rpm file from iso fail"
+        return
+    fi
+    
+    CURPWD=$($BUSYBOX_PATH/pwd)
+    
+    $BUSYBOX_PATH/mkdir -p $VTOY_PATH/rpm
+    cd $VTOY_PATH/rpm
+    vtlog "extract rpm..."
+    $BUSYBOX_PATH/rpm2cpio /tmp/xxx.rpm | $BUSYBOX_PATH/cpio -idm 2>>$VTLOG
+    cd $CURPWD
+    
+    $BUSYBOX_PATH/rm -f /tmp/xxx.rpm 
+}
+
 install_rpm_from_line() {
     vtlog "install_rpm_from_line $1 disk=#$2#"
 
@@ -385,17 +660,66 @@ ventoy_copy_device_mapper() {
     fi 
 }
 
-ventoy_udev_disk_common_hook() {
+# create link for device-mapper
+ventoy_create_persistent_link() {
+    blkdev_num=$($VTOY_PATH/tool/dmsetup ls | grep vtoy_persistent | sed 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1:\2/')  
+    vtDM=$(ventoy_find_dm_id ${blkdev_num})
+
+    if ! [ -d /dev/disk/by-label ]; then
+        mkdir -p /dev/disk/by-label
+    fi
+
+    VTLABEL=$($BUSYBOX_PATH/blkid /dev/$vtDM | $SED 's/.*LABEL="\([^"]*\)".*/\1/')
+    if [ -z "$VTLABEL" ]; then
+        VTLABEL=casper-rw
+    fi
+
+    vtlog "Persistent Label: ##${VTLABEL}##"
+
+    if ! [ -e /dev/disk/by-label/$VTLABEL ]; then
+        vtOldDir=$PWD
+        cd /dev/disk/by-label
+        ln -s ../../$vtDM $VTLABEL
+        cd $vtOldDir
+    fi    
+}
+
+ventoy_partname_to_diskname() {
+    if echo $1 | $EGREP -q "nvme.*p[0-9]$|mmc.*p[0-9]$|nbd.*p[0-9]$"; then
+        echo -n "${1:0:-2}"    
+    else
+        echo -n "${1:0:-1}"
+    fi
+}
+
+ventoy_diskname_to_partname() {
+    if echo $1 | $EGREP -q "nvme.*p[0-9]$|mmc.*p[0-9]$|nbd.*p[0-9]$"; then
+        echo -n "${1}p$2"
+    else
+        echo -n "${1}$2"
+    fi
+}
+
+ventoy_udev_disk_common_hook() {    
+    if echo $1 | $EGREP -q "nvme.*p[0-9]$|mmc.*p[0-9]$|nbd.*p[0-9]$"; then
+        VTDISK="${1:0:-2}"    
+    else
+        VTDISK="${1:0:-1}"
+    fi
     
-    VTDISK="${1:0:-1}"
+    if [ -e /vtoy/vtoy ]; then
+        VTRWMOD=""
+    else
+        VTRWMOD="--readonly"
+    fi
     
     # create device mapper for iso image file
-    if create_ventoy_device_mapper "/dev/$VTDISK" --readonly; then
+    if create_ventoy_device_mapper "/dev/$VTDISK" $VTRWMOD; then
         vtlog "==== create ventoy device mapper success ===="
     else
         vtlog "==== create ventoy device mapper failed ===="
         
-        $SLEEP 5
+        $SLEEP 3
         
         if $GREP -q "/dev/$VTDISK" /proc/mounts; then
             $GREP "/dev/$VTDISK" /proc/mounts | while read vtLine; do
@@ -406,7 +730,7 @@ ventoy_udev_disk_common_hook() {
             done
         fi
         
-        if create_ventoy_device_mapper "/dev/$VTDISK" --readonly; then
+        if create_ventoy_device_mapper "/dev/$VTDISK" $VTRWMOD; then
             vtlog "==== create ventoy device mapper success after retry ===="
         else
             vtlog "==== create ventoy device mapper failed after retry ===="
@@ -419,6 +743,152 @@ ventoy_udev_disk_common_hook() {
     else
         ventoy_copy_device_mapper "/dev/$1"
     fi
+    
+    if [ -f $VTOY_PATH/ventoy_persistent_map ]; then
+        create_persistent_device_mapper "/dev/$VTDISK"
+        ventoy_create_persistent_link
+    fi
+    
+    if $GREP -q 'dm_patch' /proc/modules; then
+        vtlog "remove dm_patch module."
+        $BUSYBOX_PATH/rmmod dm_patch
+    fi
+}
+
+ventoy_create_dev_ventoy_part() {   
+    blkdev_num=$($VTOY_PATH/tool/dmsetup ls | $GREP ventoy | $SED 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1 \2/')
+    $BUSYBOX_PATH/mknod -m 0666 /dev/ventoy b $blkdev_num
+    
+    if [ -e /vtoy_dm_table ]; then
+        vtPartid=1
+        
+        vtLevel1=$($CAT /proc/sys/kernel/printk | $AWK '{print $1}')
+        vtLevel2=$($CAT /proc/sys/kernel/printk | $AWK '{print $2}')
+        vtLevel3=$($CAT /proc/sys/kernel/printk | $AWK '{print $3}')
+        vtLevel4=$($CAT /proc/sys/kernel/printk | $AWK '{print $4}')
+        if [ -f $VTOY_PATH/dm_patch_done ]; then
+            #suppress printk message
+            echo 0 $vtLevel2 0 $vtLevel4 > /proc/sys/kernel/printk
+        fi
+        
+        $CAT /vtoy_dm_table | while read vtline; do
+            echo $vtline > /ventoy/dm_table_part${vtPartid}
+            $VTOY_PATH/tool/dmsetup create ventoy${vtPartid} /ventoy/dm_table_part${vtPartid}
+            
+            blkdev_num=$($VTOY_PATH/tool/dmsetup ls | $GREP ventoy${vtPartid} | $SED 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1 \2/')
+            $BUSYBOX_PATH/mknod -m 0666 /dev/ventoy${vtPartid} b $blkdev_num
+            
+            vtPartid=$(expr $vtPartid + 1)
+        done   
+
+        if [ -f $VTOY_PATH/dm_patch_done ]; then
+            #recover printk level
+            echo $vtLevel1 $vtLevel2 $vtLevel3 $vtLevel4 > /proc/sys/kernel/printk
+        fi
+    fi
+}
+
+
+ventoy_create_chromeos_ventoy_part() {   
+    blkdev_num=$($VTOY_PATH/tool/dmsetup ls | $GREP ventoy | $SED 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1 \2/')
+    $BUSYBOX_PATH/mknod -m 0666 /dev/ventoy b $blkdev_num
+    
+    if [ -e /vtoy_dm_table ]; then
+        vtPartid=1
+        
+        $CAT /vtoy_dm_table | while read vtline; do
+            echo $vtline > /ventoy/dm_table_part${vtPartid}
+
+            if [ $vtPartid -eq $1 ]; then
+                $VTOY_PATH/tool/dmsetup create ventoy${vtPartid} /ventoy/dm_table_part${vtPartid} --readonly
+            else
+                $VTOY_PATH/tool/dmsetup create ventoy${vtPartid} /ventoy/dm_table_part${vtPartid}
+            fi
+
+            blkdev_num=$($VTOY_PATH/tool/dmsetup ls | $GREP ventoy${vtPartid} | $SED 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1 \2/')
+            $BUSYBOX_PATH/mknod -m 0666 /dev/ventoy${vtPartid} b $blkdev_num
+            
+            vtPartid=$(expr $vtPartid + 1)
+        done        
+    fi
+}
+
+is_inotify_ventoy_part() {
+    if echo $1 | $GREP -q "2$"; then
+        if ! [ -e /sys/block/$1 ]; then
+            if [ -e /sys/class/block/$1 ]; then
+                if echo $1 | $EGREP -q "nvme|mmc|nbd"; then
+                    vtShortName=${1:0:-2}
+                else
+                    vtShortName=${1:0:-1}
+                fi
+                
+                if [ -e /dev/$vtShortName ]; then
+                    if [ "$VTOY_VLNK_BOOT" = "01" ]; then
+                        vtOrgDiskName=$($VTOY_PATH/tool/vtoydump -t $VTOY_PATH/ventoy_os_param)
+                        [ "$vtOrgDiskName" = "/dev/$vtShortName" ]
+                    else
+                        $VTOY_PATH/tool/vtoydump -f $VTOY_PATH/ventoy_os_param -c $vtShortName
+                    fi
+                    return
+                fi
+            fi
+        fi
+    fi
+    
+    [ "1" = "0" ]
 }
 
+ventoy_find_dm_id() {
+    for vt in $($BUSYBOX_PATH/ls /sys/block/); do
+        if [ "${vt:0:3}" = "dm-" ]; then
+            vtMajorMinor=$($CAT /sys/block/$vt/dev)
+            if [ "$vtMajorMinor" = "$1" ]; then
+                echo ${vt}
+                return
+            fi
+        fi
+    done
+    echo 'xx'
+}
 
+ventoy_swap_device() {
+    mv $1 $VTOY_PATH/swap_tmp_dev
+    mv $2 $1
+    mv $VTOY_PATH/swap_tmp_dev $2
+}
+
+ventoy_extract_vtloopex() {
+    vtCurPwd=$PWD
+    $BUSYBOX_PATH/mkdir -p $VTOY_PATH/partmnt $VTOY_PATH/vtloopex
+    $BUSYBOX_PATH/mount -o ro -t vfat $1  $VTOY_PATH/partmnt
+    cd $VTOY_PATH/vtloopex
+    $CAT $VTOY_PATH/partmnt/ventoy/vtloopex.cpio | $BUSYBOX_PATH/cpio -idm >> $VTLOG 2>&1
+    $BUSYBOX_PATH/umount $VTOY_PATH/partmnt
+    $BUSYBOX_PATH/rm -rf $VTOY_PATH/partmnt    
+
+    if [ -n "$2" ]; then
+        cd $VTOY_PATH/vtloopex/$2/
+        $BUSYBOX_PATH/tar -xJf vtloopex.tar.xz
+    fi
+    
+    cd $vtCurPwd
+}
+
+ventoy_check_install_module_xz() {
+    if [ -f "${1}.xz" ]; then
+        $BUSYBOX_PATH/xz -d  "${1}.xz"
+        $BUSYBOX_PATH/insmod "$1"
+    fi
+}
+
+ventoy_check_umount() {
+    for vtLoop in 0 1 2 3 4 5 6 7 8 9; do
+        $BUSYBOX_PATH/umount "$1" > /dev/null 2>&1
+        if $BUSYBOX_PATH/mountpoint -q "$1"; then
+            $SLEEP 1
+        else
+            break
+        fi
+    done
+}