IMG/cpio/ventoy/hook/pclos/ventoy-hook.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 . $VTOY_PATH/hook/ventoy-os-lib.sh
  21
  22 # Step 1: dd initrd file to ramdisk
  23 vtRamdiskFile=$($BUSYBOX_PATH/ls /initrd* | $HEAD -n1)
  24 $BUSYBOX_PATH/mknod -m 0666 /ram0 b 1 0
  25 $BUSYBOX_PATH/dd if=$vtRamdiskFile of=/ram0 status=none
  26 $BUSYBOX_PATH/rm -f $vtRamdiskFile
  27
  28 # Step 2: mount ramdisk
  29 $BUSYBOX_PATH/mkdir -p /ventoy_rdroot
  30 ventoy_close_printk
  31 $BUSYBOX_PATH/mount /ram0 /ventoy_rdroot
  32 ventoy_restore_printk
  33
  34 # Step 3: Copy ventoy tool to new root directory.
  35 # Here we make a tmpfs mount to avoid ramdisk out of space (additional space is for log).
  36 vtSize=$($BUSYBOX_PATH/du -m -s $VTOY_PATH | $BUSYBOX_PATH/awk '{print $1}')
  37 let vtSize=vtSize+4
  38
  39 $BUSYBOX_PATH/mkdir -p /ventoy_rdroot/ventoy
  40 $BUSYBOX_PATH/mount -t tmpfs -o size=${vtSize}m tmpfs /ventoy_rdroot/ventoy
  41 $BUSYBOX_PATH/cp -a /ventoy/* /ventoy_rdroot/ventoy/
  42
  43
  44 # Step 4: add hook in linuxrc&rc.sysinit script file
  45 vtLine=$($GREP -n "^find_cdrom" /ventoy_rdroot/linuxrc | $GREP -v '(' | $AWK -F: '{print $1}')
  46 $SED "$vtLine aif test -d /ventoy; then $BUSYBOX_PATH/sh $VTOY_PATH/hook/pclos/disk_hook.sh; fi" -i /ventoy_rdroot/linuxrc
  47 $SED "$vtLine aif test -d /initrd/ventoy; then ln -s /initrd/ventoy /ventoy; fi" -i /ventoy_rdroot/linuxrc
  48
  49
  50 vtRcInit=$($BUSYBOX_PATH/tail /ventoy_rdroot/linuxrc | $GREP 'exec ' | $AWK '{print $2}')
  51 if [ -e /ventoy_rdroot$vtRcInit ]; then
  52     vtRcInit=/ventoy_rdroot$vtRcInit
  53 else
  54     vtRcInit=/ventoy_rdroot/etc/rc.d/rc.sysinit
  55 fi
  56
  57 echo 'exec /sbin/init' >> $vtRcInit