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58 lines
2.3 KiB
Bash
58 lines
2.3 KiB
Bash
#!/ventoy/busybox/sh
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#************************************************************************************
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# Copyright (c) 2020, longpanda <admin@ventoy.net>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, see <http://www.gnu.org/licenses/>.
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#
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#************************************************************************************
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. $VTOY_PATH/hook/ventoy-os-lib.sh
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# Step 1: dd initrd file to ramdisk
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vtRamdiskFile=$($BUSYBOX_PATH/ls /initrd* | $HEAD -n1)
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$BUSYBOX_PATH/mknod -m 0666 /ram0 b 1 0
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$BUSYBOX_PATH/dd if=$vtRamdiskFile of=/ram0 status=none
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$BUSYBOX_PATH/rm -f $vtRamdiskFile
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# Step 2: mount ramdisk
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$BUSYBOX_PATH/mkdir -p /ventoy_rdroot
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ventoy_close_printk
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$BUSYBOX_PATH/mount /ram0 /ventoy_rdroot
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ventoy_restore_printk
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# Step 3: Copy ventoy tool to new root directory.
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# Here we make a tmpfs mount to avoid ramdisk out of space (additional space is for log).
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vtSize=$($BUSYBOX_PATH/du -m -s $VTOY_PATH | $BUSYBOX_PATH/awk '{print $1}')
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let vtSize=vtSize+4
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$BUSYBOX_PATH/mkdir -p /ventoy_rdroot/ventoy
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$BUSYBOX_PATH/mount -t tmpfs -o size=${vtSize}m tmpfs /ventoy_rdroot/ventoy
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$BUSYBOX_PATH/cp -a /ventoy/* /ventoy_rdroot/ventoy/
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# Step 4: add hook in linuxrc&rc.sysinit script file
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vtLine=$($GREP -n "^find_cdrom" /ventoy_rdroot/linuxrc | $GREP -v '(' | $AWK -F: '{print $1}')
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$SED "$vtLine aif test -d /ventoy; then $BUSYBOX_PATH/sh $VTOY_PATH/hook/pclos/disk_hook.sh; fi" -i /ventoy_rdroot/linuxrc
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$SED "$vtLine aif test -d /initrd/ventoy; then ln -s /initrd/ventoy /ventoy; fi" -i /ventoy_rdroot/linuxrc
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vtRcInit=$($BUSYBOX_PATH/tail /ventoy_rdroot/linuxrc | $GREP 'exec ' | $AWK '{print $2}')
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if [ -e /ventoy_rdroot$vtRcInit ]; then
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vtRcInit=/ventoy_rdroot$vtRcInit
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else
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vtRcInit=/ventoy_rdroot/etc/rc.d/rc.sysinit
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fi
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echo 'exec /sbin/init' >> $vtRcInit
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