91 lines
2.2 KiB
Text
91 lines
2.2 KiB
Text
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#!/bin/bash
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build_hook() {
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add_module cdrom
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add_module loop
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add_module overlay
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add_file /lib/udev/rules.d/60-cdrom_id.rules
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add_binary /lib/udev/cdrom_id
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add_binary blockdev
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add_binary losetup
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}
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run_earlyhook() {
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local mod
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for mod in cdrom loop overlay; do
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modprobe $mod 2>/dev/null
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done
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if [ -z "$root" ]; then
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mount_handler=mount_livecd
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fi
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}
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mount_livecd() {
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newroot=$1
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MEDIA=/dev/disk/by-label/LFSLIVECD
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MEDIUM=/run/initramfs/medium
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SYSTEM=/run/initramfs/system
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WRITEDIR=/run/initramfs/overlayfs/write
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WORKDIR=/run/initramfs/overlayfs/work
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sfsimg=/run/initramfs/medium/lfs/root.sfs
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wait=${wait:-5}
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count=0
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if [ ! -e $MEDIA ]; then
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msg "wait for media device..."
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while [ ! -e $MEDIA ]; do
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sleep 1
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count=$((count+1))
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if [ "$count" -ge "$wait" ]; then
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msg "media is not appeared even after wait for $wait seconds..."
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msg "try increase wait time by append 'wait=<seconds>' to boot cmdline"
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sleep 9999
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fi
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done
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fi
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mkdir -p $MEDIUM $SYSTEM $WRITEDIR $WORKDIR
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msg "mounting media to $MEDIUM..."
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mount -o ro $MEDIA $MEDIUM || problem
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if [ "$ram" = y ]; then
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msg "mounting /run/initramfs/ram to ram..."
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mkdir -p /run/initramfs/ram
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mount -t tmpfs -o "size=75%",mode=0755 ram /run/initramfs/ram || problem
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msg "copying squashfs img to /run/initramfs/ram..."
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cp $sfsimg /run/initramfs/ram/ || problem
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sfsimg=/run/initramfs/ram/root.sfs
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fi
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sfs_dev=$(losetup --find --show --read-only $sfsimg)
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msg "mounting squashfs img to $SYSTEM..."
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mount -o defaults -r $sfs_dev $SYSTEM || problem
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# overlayfs mount
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msg "mounting overlays to $newroot..."
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mount -t overlay overlay -o upperdir=$WRITEDIR,lowerdir=$SYSTEM,workdir=$WORKDIR $newroot || problem
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if [ -d $MEDIUM/rootfs/ ]; then
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msg "copying custom files to $newroot..."
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cp -aR $MEDIUM/rootfs/* $newroot/ || problem
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fi
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# Tell system to skip fsck during startup
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> $newroot/fastboot
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# Execute custom script before switch root
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if [ -f $newroot/root/custom_script.sh ]; then
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msg "running custom_script.sh script..."
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chmod +x $newroot/root/custom_script.sh
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chroot $newroot bash /root/custom_script.sh 2>/dev/null
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fi
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if [ "$ram" = y ]; then
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umount $MEDIUM
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fi
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}
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