IMG/cpio/ventoy/hook/ventoy-hook-lib.sh

   1 #!/ventoy/busybox/sh
   2 #************************************************************************************
   3 # Copyright (c) 2020, longpanda <admin@ventoy.net>
   4 #
   5 # This program is free software; you can redistribute it and/or
   6 # modify it under the terms of the GNU General Public License as
   7 # published by the Free Software Foundation; either version 3 of the
   8 # License, or (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; if not, see <http://www.gnu.org/licenses/>.
  17 #
  18 #************************************************************************************
  19
  20 VTOY_PATH=/ventoy
  21 BUSYBOX_PATH=$VTOY_PATH/busybox
  22 VTLOG=$VTOY_PATH/log
  23 FIND=$BUSYBOX_PATH/find
  24 GREP=$BUSYBOX_PATH/grep
  25 EGREP=$BUSYBOX_PATH/egrep
  26 CAT=$BUSYBOX_PATH/cat
  27 AWK=$BUSYBOX_PATH/awk
  28 SED=$BUSYBOX_PATH/sed
  29 SLEEP=$BUSYBOX_PATH/sleep
  30 HEAD=$BUSYBOX_PATH/head
  31 VTOY_DM_PATH=/dev/mapper/ventoy
  32 VTOY_DEBUG_LEVEL=$($BUSYBOX_PATH/hexdump -n 1 -s 450 -e '1/1 "%02x"' $VTOY_PATH/ventoy_os_param)
  33 VTOY_LINUX_REMOUNT=$($BUSYBOX_PATH/hexdump -n 1 -s 454 -e '1/1 "%02x"' $VTOY_PATH/ventoy_os_param)
  34 VTOY_VLNK_BOOT=$($BUSYBOX_PATH/hexdump -n 1 -s 455 -e '1/1 "%02x"' $VTOY_PATH/ventoy_os_param)
  35
  36 if [ "$VTOY_DEBUG_LEVEL" = "01" ]; then
  37     if [ -e /dev/console ]; then
  38         VTLOG=/dev/console
  39     fi
  40 fi
  41
  42 vtlog() {
  43     if [ "$VTLOG" = "$VTOY_PATH/log" ]; then
  44         echo "$*" >>$VTLOG
  45     else
  46         echo -e "\033[32m $* \033[0m" > $VTLOG
  47         $SLEEP 2
  48     fi
  49 }
  50
  51 vterr() {
  52     if [ "$VTLOG" = "$VTOY_PATH/log" ]; then
  53         echo "$*" >>$VTLOG
  54     else
  55         echo -e "\n\033[31m $* \033[0m" > $VTLOG
  56         $SLEEP 30
  57     fi
  58 }
  59
  60
  61 is_ventoy_hook_finished() {
  62     [ -e $VTOY_PATH/hook_finish ]
  63 }
  64
  65 set_ventoy_hook_finish() {
  66     echo 'Y' > $VTOY_PATH/hook_finish
  67 }
  68
  69 get_ventoy_disk_name() {
  70     if [ "$VTOY_VLNK_BOOT" = "01" ]; then
  71         $VTOY_PATH/tool/vtoydump -t /ventoy/ventoy_os_param
  72     else
  73         line=$($VTOY_PATH/tool/vtoydump -f /ventoy/ventoy_os_param)
  74         if [ $? -eq 0 ]; then
  75             echo ${line%%#*}
  76         else
  77             echo "unknown"
  78         fi
  79     fi
  80 }
  81
  82 get_ventoy_iso_name() {
  83     line=$($VTOY_PATH/tool/vtoydump -f /ventoy/ventoy_os_param)
  84     if [ $? -eq 0 ]; then
  85         echo ${line##*#}
  86     else
  87         echo "unknown"
  88     fi
  89 }
  90
  91 wait_for_usb_disk_ready() {
  92     vtloop=0
  93     while [ -n "Y" ]; do
  94         usb_disk=$(get_ventoy_disk_name)
  95         vtlog "wait_for_usb_disk_ready $usb_disk ..."
  96
  97         if echo $usb_disk | $EGREP -q "nvme|mmc|nbd"; then
  98             vtpart2=${usb_disk}p2
  99         else
 100             vtpart2=${usb_disk}2
 101         fi
 102
 103         if [ -e "${vtpart2}" ]; then
 104             vtlog "wait_for_usb_disk_ready $usb_disk finish"
 105             break
 106         else
 107             let vtloop=vtloop+1
 108             if [ $vtloop -gt 2 ]; then
 109                 if [ "$VTLOG" != "$VTOY_PATH/log" ]; then
 110                     $VTOY_PATH/tool/vtoydump -f /ventoy/ventoy_os_param -v > $VTLOG
 111                 fi
 112             fi
 113             $SLEEP 0.3
 114         fi
 115     done
 116 }
 117
 118
 119 check_usb_disk_ready() {
 120     if echo $1 | $EGREP -q "nvme|mmc|nbd"; then
 121         vtpart2=${1}p2
 122     else
 123         vtpart2=${1}2
 124     fi
 125
 126     [ -e "${vtpart2}" ]
 127 }
 128
 129 not_ventoy_disk() {
 130     if echo $1 | $EGREP -q "nvme.*p$|mmc.*p$|nbd.*p$"; then
 131         vtDiskName=${1:0:-1}
 132     else
 133         vtDiskName=$1
 134     fi
 135
 136     if [ "$VTOY_VLNK_BOOT" = "01" ]; then
 137         vtVtoyDisk=$($VTOY_PATH/tool/vtoydump -t $VTOY_PATH/ventoy_os_param)
 138         [ "$vtVtoyDisk" != "/dev/$vtDiskName" ]
 139     else
 140         if $VTOY_PATH/tool/vtoydump -f $VTOY_PATH/ventoy_os_param -c "$vtDiskName"; then
 141             $BUSYBOX_PATH/false
 142         else
 143             $BUSYBOX_PATH/true
 144         fi
 145     fi
 146 }
 147
 148 ventoy_get_vblade_bin() {
 149     if $VTOY_PATH/tool/vblade_64 -t >>$VTLOG 2>&1; then
 150         echo $VTOY_PATH/tool/vblade_64
 151     else
 152         echo $VTOY_PATH/tool/vblade_32
 153     fi
 154 }
 155
 156 ventoy_find_bin_path() {
 157     if $BUSYBOX_PATH/which "$1" > /dev/null; then
 158         $BUSYBOX_PATH/which "$1"; return
 159     fi
 160
 161     for vt_path in '/bin' '/sbin' '/usr/bin' '/usr/sbin' '/usr/local/bin' '/usr/local/sbin' '/root/bin'; do
 162         if [ -e "$vt_path/$1" ]; then
 163             echo "$vt_path/$1"; return
 164         fi
 165     done
 166
 167     echo ""
 168 }
 169
 170
 171 ventoy_find_bin_run() {
 172     vtsudo=0
 173     if [ "$1" = "sudo" ]; then
 174         shift
 175         vtsudo=1
 176     fi
 177
 178     vtbinpath=$(ventoy_find_bin_path "$1")
 179     if [ -n "$vtbinpath" ]; then
 180         shift
 181
 182         if [ $vtsudo -eq 0 ]; then
 183             vtlog "$vtbinpath $*"
 184             $vtbinpath $*
 185         else
 186             vtlog "sudo $vtbinpath $*"
 187             sudo $vtbinpath $*
 188         fi
 189     fi
 190 }
 191
 192 ventoy_get_module_postfix() {
 193     vtKerVer=$($BUSYBOX_PATH/uname -r)
 194     vtLine=$($FIND /lib/modules/$vtKerVer/ -name *.ko* | $HEAD -n1)
 195     vtComp=${vtLine##*/*.ko}
 196     echo "ko$vtComp"
 197 }
 198
 199 ventoy_check_dm_module() {
 200     if $GREP -q 'device-mapper' /proc/devices; then
 201         $BUSYBOX_PATH/true; return
 202     fi
 203
 204     vtlog "device-mapper NOT found in /proc/devices, try to load kernel module"
 205     $BUSYBOX_PATH/modprobe dm_mod >>$VTLOG 2>&1
 206     $BUSYBOX_PATH/modprobe dm-mod >>$VTLOG 2>&1
 207
 208     if ! $GREP -q 'device-mapper' /proc/devices; then
 209         vtlog "modprobe failed, now try to insmod ko..."
 210
 211         $FIND /lib/modules/ -name "dm-mod.ko*" | while read vtline; do
 212             vtlog "insmode $vtline "
 213             $BUSYBOX_PATH/insmod $vtline >>$VTLOG 2>&1
 214         done
 215     fi
 216
 217     if $GREP -q 'device-mapper' /proc/devices; then
 218         vtlog "device-mapper found in /proc/devices after retry"
 219         $BUSYBOX_PATH/true; return
 220     else
 221         vtlog "device-mapper still NOT found in /proc/devices after retry"
 222         $BUSYBOX_PATH/false; return
 223     fi
 224 }
 225
 226 ventoy_need_dm_patch() {
 227     if [ "$VTOY_LINUX_REMOUNT" != "01" ]; then
 228         if $GREP -q 'VTOY_LINUX_REMOUNT=1' /proc/cmdline; then
 229             :
 230         else
 231             $BUSYBOX_PATH/false; return
 232         fi
 233     fi
 234
 235     if $GREP -q 'device-mapper' /proc/devices; then
 236         :
 237     else
 238         $BUSYBOX_PATH/false; return
 239     fi
 240
 241     if $GREP -q 'dm_patch' /proc/modules; then
 242         $BUSYBOX_PATH/false; return
 243     fi
 244
 245     vtMajorVer=$($BUSYBOX_PATH/uname -r | $AWK -F. '{print $1}')
 246     vtMinorVer=$($BUSYBOX_PATH/uname -r | $AWK -F. '{print $2}')
 247
 248     if [ $vtMajorVer -lt 3 ]; then
 249         $BUSYBOX_PATH/false; return
 250     elif [ $vtMajorVer -eq 3 -a $vtMinorVer -lt 10 ]; then
 251         $BUSYBOX_PATH/false; return
 252     fi
 253
 254
 255     $BUSYBOX_PATH/true
 256 }
 257
 258 ventoy_dm_patch() {
 259     vtMType=$($BUSYBOX_PATH/uname -m)
 260
 261     vtlog "######### ventoy_dm_patch ############"
 262
 263     if echo $vtMType | $EGREP -i -q "x86.64|amd64"; then
 264         vtKoName=dm_patch_64.ko
 265     elif echo $vtMType | $EGREP -i -q "i[3-6]86"; then
 266         vtKoName=dm_patch_32.ko
 267     else
 268         vtlog "unsupported machine type $vtMType"
 269         return
 270     fi
 271
 272     if [ -f $VTOY_PATH/tool/$vtKoName ]; then
 273         vtlog "/ventoy/tool/$vtKoName exist OK"
 274     else
 275         vtlog "/ventoy/tool/$vtKoName NOT exist"
 276         return
 277     fi
 278
 279     $CAT /proc/kallsyms | $BUSYBOX_PATH/sort > $VTOY_PATH/kallsyms
 280
 281     if $GREP -m1 -q 'open_table_device.isra' $VTOY_PATH/kallsyms; then
 282         vtLine=$($VTOY_PATH/tool/vtoyksym open_table_device.isra $VTOY_PATH/kallsyms)
 283         vtlog "get open_table_device.isra address $vtLine"
 284     else
 285         vtLine=$($VTOY_PATH/tool/vtoyksym dm_get_table_device $VTOY_PATH/kallsyms)
 286         vtlog "get dm_get_table_device address $vtLine"
 287     fi
 288     get_addr=$(echo $vtLine | $AWK '{print $1}')
 289     get_size=$(echo $vtLine | $AWK '{print $2}')
 290
 291     if $GREP -m1 -q 'close_table_device.isra' $VTOY_PATH/kallsyms; then
 292         vtLine=$($VTOY_PATH/tool/vtoyksym close_table_device.isra $VTOY_PATH/kallsyms)
 293         vtlog "get close_table_device.isra address $vtLine"
 294     else
 295         vtLine=$($VTOY_PATH/tool/vtoyksym dm_put_table_device $VTOY_PATH/kallsyms)
 296         vtlog "get dm_put_table_device address $vtLine"
 297     fi
 298     put_addr=$(echo $vtLine | $AWK '{print $1}')
 299     put_size=$(echo $vtLine | $AWK '{print $2}')
 300
 301     ro_addr=$($GREP ' set_memory_ro$' /proc/kallsyms | $AWK '{print $1}')
 302     rw_addr=$($GREP ' set_memory_rw$' /proc/kallsyms | $AWK '{print $1}')
 303     kprobe_reg_addr=$($GREP ' register_kprobe$' /proc/kallsyms | $AWK '{print $1}')
 304     kprobe_unreg_addr=$($GREP ' unregister_kprobe$' /proc/kallsyms | $AWK '{print $1}')
 305
 306     if [ "$VTOY_DEBUG_LEVEL" = "01" ]; then
 307         printk_addr=$($GREP ' printk$' /proc/kallsyms | $AWK '{print $1}')
 308         if [ -z "$printk_addr" ]; then
 309             printk_addr=$($GREP ' _printk$' /proc/kallsyms | $AWK '{print $1}')
 310         fi
 311         vtDebug="-v"
 312     else
 313         printk_addr=0
 314     fi
 315
 316     #printk_addr=$($GREP ' printk$' /proc/kallsyms | $AWK '{print $1}')
 317     #vtDebug="-v"
 318
 319     vtlog get_addr=$get_addr  get_size=$get_size
 320     vtlog put_addr=$put_addr  put_size=$put_size
 321     vtlog kprobe_reg_addr=$kprobe_reg_addr  kprobe_unreg_addr=$kprobe_unreg_addr
 322     vtlog ro_addr=$ro_addr  rw_addr=$rw_addr  printk_addr=$printk_addr
 323
 324     if [ "$get_addr" = "0" -o "$put_addr" = "0" ]; then
 325         vtlog "Invalid symbol address"
 326         return
 327     fi
 328     if [ "$ro_addr" = "0" -o "$rw_addr" = "0" ]; then
 329         vtlog "Invalid symbol address"
 330         return
 331     fi
 332
 333
 334     vtKv=$($BUSYBOX_PATH/uname -r)
 335
 336     if [ ! -d /lib/modules/$vtKv ]; then
 337         vtlog "No modules directory found"
 338         return
 339     elif [ -d /lib/modules/$vtKv/kernel/fs ]; then
 340         vtModPath=$($FIND /lib/modules/$vtKv/kernel/fs/ -name "*.ko*" | $HEAD -n1)
 341     else
 342         vtModPath=$($FIND /lib/modules/$vtKv/kernel/ -name "xfs.ko*" | $HEAD -n1)
 343     fi
 344
 345     if [ -z "$vtModPath" ]; then
 346         vtModPath=$($FIND /lib/modules/$vtKv/kernel/ -name "*.ko*" | $HEAD -n1)
 347     fi
 348
 349     vtModName=$($BUSYBOX_PATH/basename $vtModPath)
 350
 351     vtlog "template module is $vtModPath $vtModName"
 352
 353     if [ -z "$vtModPath" ]; then
 354         vtlog "No template module found"
 355         return
 356     elif echo $vtModPath | $GREP -q "[.]ko$"; then
 357         $BUSYBOX_PATH/cp -a $vtModPath  $VTOY_PATH/$vtModName
 358     elif echo $vtModPath | $GREP -q "[.]ko[.]xz$"; then
 359         $BUSYBOX_PATH/xzcat $vtModPath > $VTOY_PATH/$vtModName
 360     elif echo $vtModPath | $GREP -q "[.]ko[.]gz$"; then
 361         $BUSYBOX_PATH/zcat $vtModPath > $VTOY_PATH/$vtModName
 362     else
 363         vtlog "unsupport module type"
 364         return
 365     fi
 366
 367     #step1: modify vermagic/mod crc/relocation
 368     vtlog "$VTOY_PATH/tool/vtoykmod -u $VTOY_PATH/tool/$vtKoName $VTOY_PATH/$vtModName $vtDebug"
 369     $VTOY_PATH/tool/vtoykmod -u $VTOY_PATH/tool/$vtKoName $VTOY_PATH/$vtModName $vtDebug
 370
 371     #step2: fill parameters
 372     vtPgsize=$($VTOY_PATH/tool/vtoyksym -p)
 373     vtlog "$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 $vtKv $vtDebug"
 374     $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 $vtKv $vtDebug
 375
 376     $BUSYBOX_PATH/insmod $VTOY_PATH/tool/$vtKoName
 377
 378     if $GREP -q 'dm_patch' /proc/modules; then
 379         echo "done" > $VTOY_PATH/dm_patch_done
 380     fi
 381
 382 }
 383
 384 create_ventoy_device_mapper() {
 385     vtlog "create_ventoy_device_mapper $*"
 386
 387     VT_DM_BIN=$(ventoy_find_bin_path dmsetup)
 388     if [ -z "$VT_DM_BIN" ]; then
 389         vtlog "no dmsetup avaliable, lastly try inbox dmsetup"
 390         VT_DM_BIN=$VTOY_PATH/tool/dmsetup
 391     fi
 392
 393     vtlog "dmsetup avaliable in system $VT_DM_BIN"
 394
 395     if ventoy_check_dm_module "$1"; then
 396         vtlog "device-mapper module check success"
 397     else
 398         vterr "Error: no dm module avaliable"
 399     fi
 400
 401     $VTOY_PATH/tool/vtoydm -p -f $VTOY_PATH/ventoy_image_map -d $1 > $VTOY_PATH/ventoy_dm_table
 402
 403
 404     vtLevel1=$($CAT /proc/sys/kernel/printk | $AWK '{print $1}')
 405     vtLevel2=$($CAT /proc/sys/kernel/printk | $AWK '{print $2}')
 406     vtLevel3=$($CAT /proc/sys/kernel/printk | $AWK '{print $3}')
 407     vtLevel4=$($CAT /proc/sys/kernel/printk | $AWK '{print $4}')
 408     if ventoy_need_dm_patch; then
 409         ventoy_dm_patch
 410         #suppress printk message
 411         echo 0 $vtLevel2 0 $vtLevel4 > /proc/sys/kernel/printk
 412     fi
 413
 414     if [ -z "$2" ]; then
 415         $VT_DM_BIN create ventoy $VTOY_PATH/ventoy_dm_table >>$VTLOG 2>&1
 416     else
 417         $VT_DM_BIN "$2" create ventoy $VTOY_PATH/ventoy_dm_table >>$VTLOG 2>&1
 418     fi
 419
 420     if ventoy_need_dm_patch; then
 421         #recover printk level
 422         echo $vtLevel1 $vtLevel2 $vtLevel3 $vtLevel4 > /proc/sys/kernel/printk
 423     fi
 424 }
 425
 426 create_persistent_device_mapper() {
 427     vtlog "create_persistent_device_mapper $*"
 428
 429     VT_DM_BIN=$(ventoy_find_bin_path dmsetup)
 430     if [ -z "$VT_DM_BIN" ]; then
 431         vtlog "no dmsetup avaliable, lastly try inbox dmsetup"
 432         VT_DM_BIN=$VTOY_PATH/tool/dmsetup
 433     fi
 434
 435     vtlog "dmsetup avaliable in system $VT_DM_BIN"
 436
 437     if ventoy_check_dm_module "$1"; then
 438         vtlog "device-mapper module check success"
 439     else
 440         vterr "Error: no dm module avaliable"
 441     fi
 442
 443     $VTOY_PATH/tool/vtoydm -p -f $VTOY_PATH/ventoy_persistent_map -d $1 > $VTOY_PATH/persistent_dm_table
 444
 445
 446     vtLevel1=$($CAT /proc/sys/kernel/printk | $AWK '{print $1}')
 447     vtLevel2=$($CAT /proc/sys/kernel/printk | $AWK '{print $2}')
 448     vtLevel3=$($CAT /proc/sys/kernel/printk | $AWK '{print $3}')
 449     vtLevel4=$($CAT /proc/sys/kernel/printk | $AWK '{print $4}')
 450     if [ -f $VTOY_PATH/dm_patch_done ]; then
 451         #suppress printk message
 452         echo 0 $vtLevel2 0 $vtLevel4 > /proc/sys/kernel/printk
 453     fi
 454
 455     $VT_DM_BIN create vtoy_persistent $VTOY_PATH/persistent_dm_table >>$VTLOG 2>&1
 456
 457     if [ -f $VTOY_PATH/dm_patch_done ]; then
 458         #recover printk level
 459         echo $vtLevel1 $vtLevel2 $vtLevel3 $vtLevel4 > /proc/sys/kernel/printk
 460     fi
 461 }
 462
 463
 464
 465 wait_for_ventoy_dm_disk_label() {
 466     DM=$($BUSYBOX_PATH/readlink $VTOY_DM_PATH)
 467     vtlog "wait_for_ventoy_dm_disk_label $DM ..."
 468
 469     for i in 0 1 2 3 4 5 6 7 8 9; do
 470         vtlog "i=$i ####### ls /dev/disk/by-label/"
 471         ls -l /dev/disk/by-label/ >> $VTLOG
 472
 473         if ls -l /dev/disk/by-label/ | $GREP -q "$DM"; then
 474             break
 475         else
 476             $SLEEP 1
 477         fi
 478     done
 479 }
 480
 481 install_udeb_pkg() {
 482     if ! [ -e "$1" ]; then
 483         $BUSYBOX_PATH/false
 484         return
 485     fi
 486
 487     if [ -d /tmp/vtoy_udeb ]; then
 488         $BUSYBOX_PATH/rm -rf /tmp/vtoy_udeb
 489     fi
 490
 491     $BUSYBOX_PATH/mkdir -p /tmp/vtoy_udeb
 492     $BUSYBOX_PATH/cp -a "$1" /tmp/vtoy_udeb/
 493
 494     CURDIR=$($BUSYBOX_PATH/pwd)
 495     cd /tmp/vtoy_udeb
 496
 497     $BUSYBOX_PATH/ar x "$1"
 498
 499     if [ -e 'data.tar.gz' ]; then
 500         $BUSYBOX_PATH/tar -xzf data.tar.gz -C /
 501     elif [ -e 'data.tar.xz' ]; then
 502         $BUSYBOX_PATH/tar -xJf data.tar.xz -C /
 503     elif [ -e 'data.tar.bz2' ]; then
 504         $BUSYBOX_PATH/tar -xjf data.tar.bz2 -C /
 505     elif [ -e 'data.tar.lzma' ]; then
 506         $BUSYBOX_PATH/tar -xaf data.tar.lzma -C /
 507     fi
 508
 509     if [ -e 'control.tar.gz' ]; then
 510         $BUSYBOX_PATH/tar -xzf control.tar.gz -C /
 511     elif [ -e 'control.tar.xz' ]; then
 512         $BUSYBOX_PATH/tar -xJf control.tar.xz -C /
 513     elif [ -e 'control.tar.bz2' ]; then
 514         $BUSYBOX_PATH/tar -xjf control.tar.bz2 -C /
 515     elif [ -e 'control.tar.lzma' ]; then
 516         $BUSYBOX_PATH/tar -xaf control.tar.lzma -C /
 517     fi
 518
 519     cd $CURDIR
 520     $BUSYBOX_PATH/rm -rf /tmp/vtoy_udeb
 521     $BUSYBOX_PATH/true
 522 }
 523
 524
 525 install_udeb_from_line() {
 526     vtlog "install_udeb_from_line $1"
 527
 528     if ! [ -b "$2" ]; then
 529         vterr "disk #$2# not exist"
 530         return
 531     fi
 532
 533     sector=$(echo $1 | $AWK '{print $(NF-1)}')
 534     length=$(echo $1 | $AWK '{print $NF}')
 535     vtlog "sector=$sector  length=$length"
 536
 537     $VTOY_PATH/tool/vtoydm -e -f $VTOY_PATH/ventoy_image_map -d ${2} -s $sector -l $length -o /tmp/xxx.udeb
 538     if [ -e /tmp/xxx.udeb ]; then
 539         vtlog "extract udeb file from iso success"
 540     else
 541         vterr "extract udeb file from iso fail"
 542         return
 543     fi
 544
 545     install_udeb_pkg /tmp/xxx.udeb
 546     $BUSYBOX_PATH/rm -f /tmp/xxx.udeb
 547 }
 548
 549 extract_file_from_line() {
 550     vtlog "extract_file_from_line $1 disk=#$2#"
 551     if ! [ -b "$2" ]; then
 552         vterr "disk #$2# not exist"
 553         return
 554     fi
 555
 556     sector=$(echo $1 | $AWK '{print $(NF-1)}')
 557     length=$(echo $1 | $AWK '{print $NF}')
 558     vtlog "sector=$sector  length=$length"
 559
 560     $VTOY_PATH/tool/vtoydm -e -f $VTOY_PATH/ventoy_image_map -d ${2} -s $sector -l $length -o $3
 561     if [ -e $3 ]; then
 562         vtlog "extract file from iso success"
 563         $BUSYBOX_PATH/true
 564     else
 565         vterr "extract file from iso fail"
 566         $BUSYBOX_PATH/false
 567     fi
 568 }
 569
 570 extract_rpm_from_line() {
 571     vtlog "extract_rpm_from_line $1 disk=#$2#"
 572
 573     if ! [ -b "$2" ]; then
 574         vterr "disk #$2# not exist"
 575         return
 576     fi
 577
 578     sector=$(echo $1 | $AWK '{print $(NF-1)}')
 579     length=$(echo $1 | $AWK '{print $NF}')
 580     vtlog "sector=$sector  length=$length"
 581
 582     $VTOY_PATH/tool/vtoydm -e -f $VTOY_PATH/ventoy_image_map -d ${2} -s $sector -l $length -o /tmp/xxx.rpm
 583     if [ -e /tmp/xxx.rpm ]; then
 584         vtlog "extract rpm file from iso success"
 585     else
 586         vterr "extract rpm file from iso fail"
 587         return
 588     fi
 589
 590     CURPWD=$($BUSYBOX_PATH/pwd)
 591
 592     $BUSYBOX_PATH/mkdir -p $VTOY_PATH/rpm
 593     cd $VTOY_PATH/rpm
 594     vtlog "extract rpm..."
 595     $BUSYBOX_PATH/rpm2cpio /tmp/xxx.rpm | $BUSYBOX_PATH/cpio -idm 2>>$VTLOG
 596     cd $CURPWD
 597
 598     $BUSYBOX_PATH/rm -f /tmp/xxx.rpm
 599 }
 600
 601 install_rpm_from_line() {
 602     vtlog "install_rpm_from_line $1 disk=#$2#"
 603
 604     if ! [ -b "$2" ]; then
 605         vterr "disk #$2# not exist"
 606         return
 607     fi
 608
 609     sector=$(echo $1 | $AWK '{print $(NF-1)}')
 610     length=$(echo $1 | $AWK '{print $NF}')
 611     vtlog "sector=$sector  length=$length"
 612
 613     $VTOY_PATH/tool/vtoydm -e -f $VTOY_PATH/ventoy_image_map -d ${2} -s $sector -l $length -o /tmp/xxx.rpm
 614     if [ -e /tmp/xxx.rpm ]; then
 615         vtlog "extract rpm file from iso success"
 616     else
 617         vterr "extract rpm file from iso fail"
 618         return
 619     fi
 620
 621     CURPWD=$($BUSYBOX_PATH/pwd)
 622
 623     cd /
 624     vtlog "install rpm..."
 625     $BUSYBOX_PATH/rpm2cpio /tmp/xxx.rpm | $BUSYBOX_PATH/cpio -idm 2>>$VTLOG
 626     cd $CURPWD
 627
 628     $BUSYBOX_PATH/rm -f /tmp/xxx.rpm
 629 }
 630
 631 dump_whole_iso_file() {
 632    $VTOY_PATH/tool/vtoydm -p -f $VTOY_PATH/ventoy_image_map -d $usb_disk | while read vtline; do
 633         vtlog "dmtable line: $vtline"
 634         vtcount=$(echo $vtline | $AWK '{print $2}')
 635         vtoffset=$(echo $vtline | $AWK '{print $NF}')
 636         $BUSYBOX_PATH/dd if=$usb_disk of="$1" bs=512 count=$vtcount skip=$vtoffset oflag=append conv=notrunc
 637     done
 638 }
 639
 640 ventoy_copy_device_mapper() {
 641     if [ -L $VTOY_DM_PATH ]; then
 642         vtlog "replace block device link $1..."
 643         $BUSYBOX_PATH/mv "$1" $VTOY_PATH/dev_backup_${1#/dev/}
 644         VT_MAPPER_LINK=$($BUSYBOX_PATH/readlink $VTOY_DM_PATH)
 645         $BUSYBOX_PATH/cp -a "/dev/mapper/$VT_MAPPER_LINK" "$1"
 646     elif [ -b $VTOY_DM_PATH ]; then
 647         vtlog "replace block device $1..."
 648         $BUSYBOX_PATH/mv "$1" $VTOY_PATH/dev_backup_${1#/dev/}
 649         $BUSYBOX_PATH/cp -a "$VTOY_DM_PATH" "$1"
 650     else
 651
 652         vtlog "$VTOY_DM_PATH not exist, now check /dev/dm-X ..."
 653         VT_DM_BIN=$(ventoy_find_bin_path dmsetup)
 654         if [ -z "$VT_DM_BIN" ]; then
 655             vtlog "no dmsetup avaliable, lastly try inbox dmsetup"
 656             VT_DM_BIN=$VTOY_PATH/tool/dmsetup
 657         fi
 658
 659         DM_VT_ID=$($VT_DM_BIN ls | $GREP ventoy | $SED 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1 \2/')
 660         vtlog "DM_VT_ID=$DM_VT_ID ..."
 661         $BUSYBOX_PATH/mv "$1" $VTOY_PATH/dev_backup_${1#/dev/}
 662         $BUSYBOX_PATH/mknod -m 0666 "$1" b $DM_VT_ID
 663     fi
 664 }
 665
 666 # create link for device-mapper
 667 ventoy_create_persistent_link() {
 668     blkdev_num=$($VTOY_PATH/tool/dmsetup ls | grep vtoy_persistent | sed 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1:\2/')
 669     vtDM=$(ventoy_find_dm_id ${blkdev_num})
 670
 671     if ! [ -d /dev/disk/by-label ]; then
 672         mkdir -p /dev/disk/by-label
 673     fi
 674
 675     VTLABEL=$($BUSYBOX_PATH/blkid /dev/$vtDM | $SED 's/.*LABEL="\([^"]*\)".*/\1/')
 676     if [ -z "$VTLABEL" ]; then
 677         VTLABEL=casper-rw
 678     fi
 679
 680     vtlog "Persistent Label: ##${VTLABEL}##"
 681
 682     if ! [ -e /dev/disk/by-label/$VTLABEL ]; then
 683         vtOldDir=$PWD
 684         cd /dev/disk/by-label
 685         ln -s ../../$vtDM $VTLABEL
 686         cd $vtOldDir
 687     fi
 688 }
 689
 690 ventoy_partname_to_diskname() {
 691     if echo $1 | $EGREP -q "nvme.*p[0-9]$|mmc.*p[0-9]$|nbd.*p[0-9]$"; then
 692         echo -n "${1:0:-2}"
 693     else
 694         echo -n "${1:0:-1}"
 695     fi
 696 }
 697
 698 ventoy_diskname_to_partname() {
 699     if echo $1 | $EGREP -q "nvme.*p[0-9]$|mmc.*p[0-9]$|nbd.*p[0-9]$"; then
 700         echo -n "${1}p$2"
 701     else
 702         echo -n "${1}$2"
 703     fi
 704 }
 705
 706 ventoy_udev_disk_common_hook() {
 707     if echo $1 | $EGREP -q "nvme.*p[0-9]$|mmc.*p[0-9]$|nbd.*p[0-9]$"; then
 708         VTDISK="${1:0:-2}"
 709     else
 710         VTDISK="${1:0:-1}"
 711     fi
 712
 713     if [ -e /vtoy/vtoy ]; then
 714         VTRWMOD=""
 715     else
 716         VTRWMOD="--readonly"
 717     fi
 718
 719     # create device mapper for iso image file
 720     if create_ventoy_device_mapper "/dev/$VTDISK" $VTRWMOD; then
 721         vtlog "==== create ventoy device mapper success ===="
 722     else
 723         vtlog "==== create ventoy device mapper failed ===="
 724
 725         $SLEEP 3
 726
 727         if $GREP -q "/dev/$VTDISK" /proc/mounts; then
 728             $GREP "/dev/$VTDISK" /proc/mounts | while read vtLine; do
 729                 vtPart=$(echo $vtLine | $AWK '{print $1}')
 730                 vtMnt=$(echo $vtLine | $AWK '{print $2}')
 731                 vtlog "$vtPart is mounted on $vtMnt  now umount it ..."
 732                 $BUSYBOX_PATH/umount $vtMnt
 733             done
 734         fi
 735
 736         if create_ventoy_device_mapper "/dev/$VTDISK" $VTRWMOD; then
 737             vtlog "==== create ventoy device mapper success after retry ===="
 738         else
 739             vtlog "==== create ventoy device mapper failed after retry ===="
 740             return
 741         fi
 742     fi
 743
 744     if [ "$2" = "noreplace" ]; then
 745         vtlog "no need to replace block device"
 746     else
 747         ventoy_copy_device_mapper "/dev/$1"
 748     fi
 749
 750     if [ -f $VTOY_PATH/ventoy_persistent_map ]; then
 751         create_persistent_device_mapper "/dev/$VTDISK"
 752         ventoy_create_persistent_link
 753     fi
 754
 755     if $GREP -q 'dm_patch' /proc/modules; then
 756         vtlog "remove dm_patch module."
 757         $BUSYBOX_PATH/rmmod dm_patch
 758     fi
 759 }
 760
 761 ventoy_create_dev_ventoy_part() {
 762     blkdev_num=$($VTOY_PATH/tool/dmsetup ls | $GREP ventoy | $SED 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1 \2/')
 763     $BUSYBOX_PATH/mknod -m 0666 /dev/ventoy b $blkdev_num
 764
 765     if [ -e /vtoy_dm_table ]; then
 766         vtPartid=1
 767
 768         vtLevel1=$($CAT /proc/sys/kernel/printk | $AWK '{print $1}')
 769         vtLevel2=$($CAT /proc/sys/kernel/printk | $AWK '{print $2}')
 770         vtLevel3=$($CAT /proc/sys/kernel/printk | $AWK '{print $3}')
 771         vtLevel4=$($CAT /proc/sys/kernel/printk | $AWK '{print $4}')
 772         if [ -f $VTOY_PATH/dm_patch_done ]; then
 773             #suppress printk message
 774             echo 0 $vtLevel2 0 $vtLevel4 > /proc/sys/kernel/printk
 775         fi
 776
 777         $CAT /vtoy_dm_table | while read vtline; do
 778             echo $vtline > /ventoy/dm_table_part${vtPartid}
 779             $VTOY_PATH/tool/dmsetup create ventoy${vtPartid} /ventoy/dm_table_part${vtPartid}
 780
 781             blkdev_num=$($VTOY_PATH/tool/dmsetup ls | $GREP ventoy${vtPartid} | $SED 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1 \2/')
 782             $BUSYBOX_PATH/mknod -m 0666 /dev/ventoy${vtPartid} b $blkdev_num
 783
 784             vtPartid=$(expr $vtPartid + 1)
 785         done
 786
 787         if [ -f $VTOY_PATH/dm_patch_done ]; then
 788             #recover printk level
 789             echo $vtLevel1 $vtLevel2 $vtLevel3 $vtLevel4 > /proc/sys/kernel/printk
 790         fi
 791     fi
 792 }
 793
 794
 795 ventoy_create_chromeos_ventoy_part() {
 796     blkdev_num=$($VTOY_PATH/tool/dmsetup ls | $GREP ventoy | $SED 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1 \2/')
 797     $BUSYBOX_PATH/mknod -m 0666 /dev/ventoy b $blkdev_num
 798
 799     if [ -e /vtoy_dm_table ]; then
 800         vtPartid=1
 801
 802         $CAT /vtoy_dm_table | while read vtline; do
 803             echo $vtline > /ventoy/dm_table_part${vtPartid}
 804
 805             if [ $vtPartid -eq $1 ]; then
 806                 $VTOY_PATH/tool/dmsetup create ventoy${vtPartid} /ventoy/dm_table_part${vtPartid} --readonly
 807             else
 808                 $VTOY_PATH/tool/dmsetup create ventoy${vtPartid} /ventoy/dm_table_part${vtPartid}
 809             fi
 810
 811             blkdev_num=$($VTOY_PATH/tool/dmsetup ls | $GREP ventoy${vtPartid} | $SED 's/.*(\([0-9][0-9]*\),.*\([0-9][0-9]*\).*/\1 \2/')
 812             $BUSYBOX_PATH/mknod -m 0666 /dev/ventoy${vtPartid} b $blkdev_num
 813
 814             vtPartid=$(expr $vtPartid + 1)
 815         done
 816     fi
 817 }
 818
 819 is_inotify_ventoy_part() {
 820     if echo $1 | $GREP -q "2$"; then
 821         if ! [ -e /sys/block/$1 ]; then
 822             if [ -e /sys/class/block/$1 ]; then
 823                 if echo $1 | $EGREP -q "nvme|mmc|nbd"; then
 824                     vtShortName=${1:0:-2}
 825                 else
 826                     vtShortName=${1:0:-1}
 827                 fi
 828
 829                 if [ -e /dev/$vtShortName ]; then
 830                     if [ "$VTOY_VLNK_BOOT" = "01" ]; then
 831                         vtOrgDiskName=$($VTOY_PATH/tool/vtoydump -t $VTOY_PATH/ventoy_os_param)
 832                         [ "$vtOrgDiskName" = "/dev/$vtShortName" ]
 833                     else
 834                         $VTOY_PATH/tool/vtoydump -f $VTOY_PATH/ventoy_os_param -c $vtShortName
 835                     fi
 836                     return
 837                 fi
 838             fi
 839         fi
 840     fi
 841
 842     [ "1" = "0" ]
 843 }
 844
 845 ventoy_find_dm_id() {
 846     for vt in $($BUSYBOX_PATH/ls /sys/block/); do
 847         if [ "${vt:0:3}" = "dm-" ]; then
 848             vtMajorMinor=$($CAT /sys/block/$vt/dev)
 849             if [ "$vtMajorMinor" = "$1" ]; then
 850                 echo ${vt}
 851                 return
 852             fi
 853         fi
 854     done
 855     echo 'xx'
 856 }
 857
 858 ventoy_swap_device() {
 859     mv $1 $VTOY_PATH/swap_tmp_dev
 860     mv $2 $1
 861     mv $VTOY_PATH/swap_tmp_dev $2
 862 }
 863
 864 ventoy_extract_vtloopex() {
 865     vtCurPwd=$PWD
 866     $BUSYBOX_PATH/mkdir -p $VTOY_PATH/partmnt $VTOY_PATH/vtloopex
 867     $BUSYBOX_PATH/mount -o ro -t vfat $1  $VTOY_PATH/partmnt
 868     cd $VTOY_PATH/vtloopex
 869     $CAT $VTOY_PATH/partmnt/ventoy/vtloopex.cpio | $BUSYBOX_PATH/cpio -idm >> $VTLOG 2>&1
 870     $BUSYBOX_PATH/umount $VTOY_PATH/partmnt
 871     $BUSYBOX_PATH/rm -rf $VTOY_PATH/partmnt
 872
 873     if [ -n "$2" ]; then
 874         cd $VTOY_PATH/vtloopex/$2/
 875         $BUSYBOX_PATH/tar -xJf vtloopex.tar.xz
 876     fi
 877
 878     cd $vtCurPwd
 879 }
 880
 881 ventoy_check_install_module_xz() {
 882     if [ -f "${1}.xz" ]; then
 883         $BUSYBOX_PATH/xz -d  "${1}.xz"
 884         $BUSYBOX_PATH/insmod "$1"
 885     fi
 886 }
 887
 888 ventoy_check_umount() {
 889     for vtLoop in 0 1 2 3 4 5 6 7 8 9; do
 890         $BUSYBOX_PATH/umount "$1" > /dev/null 2>&1
 891         if $BUSYBOX_PATH/mountpoint -q "$1"; then
 892             $SLEEP 1
 893         else
 894             break
 895         fi
 896     done
 897 }
 898
 899 ventoy_wait_dir() {
 900     vtdir=$1
 901     vtsec=0
 902
 903     while [ $vtsec -lt $2 ]; do
 904         if [ -d "$vtdir" ]; then
 905             break
 906         else
 907             $SLEEP 1
 908             vtsec=$(expr $vtsec + 1)
 909         fi
 910     done
 911 }