darch-script

#!/bin/sh

# echo	'Loading Linux linux ...'
# linux	darch_dir=UUID=a85bf1c9-59a1-4dba-9df9-6fbbfa03466c:/var/lib/darch/stage/live/h42milg9c1r2jqr02ch8q1r3x
# echo	'Loading initial ramdisk ...'

export DARCH_ROOTFS=
export DARCH_DIR=

for x in $(cat /proc/cmdline); do
	case $x in
	darch_rootfs=*)
		DARCH_ROOTFS=${x#darch_rootfs=}
		;;
	darch_dir=*)
		DARCH_DIR=${x#darch_dir=}
		;;
	esac
done

export DARCH_DIR_PATH=`echo $DARCH_DIR | sed 's/.*\://g'`
export DARCH_DIR_DEVICE=`echo $DARCH_DIR | sed 's/:.*//'`
export ROOT=$DARCH_DIR_DEVICE

mountroot()
{
	# Mount the $ROOT parameter to $rootmnt, we will move it later.
	local_mount_root

	# Move the root that was mounted to another directory so
	# that we can mount the squashfs image on the /root directory.
	mkdir -m 0700 /root-real
	mount -n -o move $rootmnt /root-real
	mkdir -m 0700 $rootmnt

	# Build the overlay directories and mount them.
	mkdir -m 0755 -p /run/darch/squashro
	mkdir -m 0755 -p /run/darch/squashrw
	mount -t squashfs "/root-real${DARCH_DIR_PATH}/${DARCH_ROOTFS}" /run/darch/squashro
	mount -t tmpfs -o rw,noatime,mode=755 tmpfs /run/darch/squashrw
	mkdir -p /run/darch/squashrw/upperdir /run/darch/squashrw/work
	mount -t overlay overlay -o "lowerdir=/run/darch/squashro,upperdir=/run/darch/squashrw/upperdir,workdir=/run/darch/squashrw/work" "$rootmnt"

	maybe_break darch

	# Run the hooks for the image
	darch_hooks_dir="/root-real${DARCH_DIR_PATH}/hooks"
	if [ -e "$darch_hooks_dir" ]; then
    	for hook_dir in $darch_hooks_dir/*; do
        	hook_name=`basename ${hook_dir}`
        	export DARCH_ROOT_FS="${rootmnt}"
        	export DARCH_HOOK_DIR="${darch_hooks_dir}/${hook_name}"

        	/bin/sh -c ". $DARCH_HOOK_DIR/hook && run"
    	done
	fi

	maybe_break darch
}