# Local filesystem mounting			-*- shell-script -*-

pre_mountroot()
{
	[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/local-top"
	run_scripts /scripts/local-top
	[ "$quiet" != "y" ] && log_end_msg
}

mountroot()
{
	# list of possible userdata partition names
	partlist="userdata UDA DATAFS USERDATA"

	/bin/lvm.static vgscan
        /bin/lvm.static vgchange -ay
	udevadm settle

	pre_mountroot

	[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/local-premount"
	run_scripts /scripts/local-premount
	[ "$quiet" != "y" ] && log_end_msg

	# Mount root
	#
	# Create a temporary mountpoint for the bindmount
	mkdir -p /tmpmnt

	# Make sure the device has been created by udev before we try to mount
	udevadm settle

	# find the right partition
	for partname in $partlist; do
		part=$(find /dev -name $partname|tail -1)
		path=$(readlink -f $part)
		[ -n "$path" ] && break
	done

	echo "initrd: mounting $path" >/dev/kmsg || true

	# Mount the data partition to a temporary mount point
	mount /dev/store/cm-data /tmpmnt
	mount --bind /tmpmnt/ubuntu ${rootmnt}

	# Loop-mounted flipped model
	if [ -e /tmpmnt/system.img ]; then
		# Prepare the root filesystem
		if [ -e /tmpmnt/.developer_mode ]; then
			echo "initrd: mounting system.img (developer mode)" >/dev/kmsg || true
			mount -o loop,rw /tmpmnt/system.img ${rootmnt}
			mountroot_status="$?"
		else
			echo "initrd: mounting system.img (user mode)" >/dev/kmsg || true
			mount -o loop,ro /tmpmnt/system.img ${rootmnt}
			mountroot_status="$?"
		fi
		mkdir ${rootmnt}/userdata
		mount --move /tmpmnt ${rootmnt}/userdata

		# Mount the android system partition to a temporary location
		mkdir -p /android-system /android-initrd
		mount /dev/store/cm-system /android-system

		# Get device information
		device=$(grep ^ro.product.device= /android-system/build.prop |sed -e 's/.*=//')
		[ -z "$device" ] && device="unknown"
		echo "initrd: device is $device" >/dev/kmsg || true

		# Mount some tmpfs
		mount -o rw,size=4096 -t tmpfs none ${rootmnt}/android
		mount -o rw,nosuid,noexec,relatime,mode=755 -t tmpfs tmpfs ${rootmnt}/run

		# Create some needed paths on tmpfs
		mkdir -p ${rootmnt}/android/data ${rootmnt}/android/system

		# Prepare the fstab
		FSTAB=${rootmnt}/etc/fstab
		touch ${rootmnt}/run/image.fstab
		mount -o bind ${rootmnt}/run/image.fstab $FSTAB || panic "drop to adb"
		echo "/dev/root / rootfs defaults,ro 0 1" >> $FSTAB

		# Process the list of bind-mounts
		# (but don't mount them, mountall will do it)
		cat ${rootmnt}/etc/system-image/writable-paths | while read line; do
			set -- $line
			# Skip invalid/commented entries
			([ -z "$1" ] || [ -z "$2" ] || [ -z "$3" ] || [ -z "$4" ]) && continue
			[ "$1" = "#" ] && continue

			# Skip invalid mount points
			dstpath="${rootmnt}/$1"
			[ ! -e "$dstpath" ] && continue

			if [ "$3" = "temporary" ]; then
				# Temporary entries are simple, just mount a tmpfs
				echo "tmpfs $1 tmpfs defaults 0 1" >> $FSTAB
			elif [ "$3" = "persistent" ]; then
				# Figure out the source path
				if [ "$2" = "auto" ]; then
					srcpath="${rootmnt}/userdata/system-data/$1"
					path="/userdata/system-data/$1"
				else
					srcpath="${rootmnt}/userdata/$2"
					path="/userdata/$2"
				fi

				if [ ! -e "$srcpath" ]; then
					# Process new persistent paths
					mkdir -p ${srcpath%/*}
					if [ ! -d "$dstpath" ]; then
						# Deal with redirected files
						if [ "$4" = "transition" ]; then
							cp -a $dstpath $srcpath
						else
							touch $srcpath
						fi
					else
						# Deal with redirected directories
						if [ "$4" = "transition" ]; then
							cp -aR $dstpath $srcpath
						else
							mkdir $srcpath
						fi
					fi
				fi

				# Write the fstab entry
				echo "$path $1 none bind 0 1" >> $FSTAB
			else
				continue
			fi
		done

		# Extract the fstab from the android initrd
		# NOTE: we should find a faster way of doing that or cache it
		OLD_CWD=$(pwd)
		cd /android-initrd
		cat /android-system/boot/android-ramdisk.img | gzip -d | cpio -i fstab*
		cd $OLD_CWD

		# Mount all the Android partitions
		cat /android-initrd/fstab.* | while read line; do
			set -- $line

			# Skip any unwanted entry
			echo $1 | egrep -q "^#" && continue
			([ -z "$1" ] || [ -z "$2" ] || [ -z "$3" ] || [ -z "$4" ]) && continue
			([ "$2" = "/system" ] || [ "$2" = "/data" ]) && continue

			label=$(echo $1 | awk -F/ '{print $NF}')
			[ -z "$label" ] && continue
			for dir in by-partlabel by-name by-label; do
				path="/dev/disk/$dir/$label"
				[ -e "$path" ] && break
			done
			[ ! -e "$path" ] && continue

			mkdir -p ${rootmnt}/android/$2
			echo "initrd: mounting $path as ${rootmnt}/android/$2" >/dev/kmsg || true
			mount $path ${rootmnt}/android/$2 -t $3 -o $4
		done

		# system is a special case
		echo "initrd: mounting ${rootmnt}/var/lib/lxc/android/system.img as ${rootmnt}/android/system" >/dev/kmsg || true
		mount --bind /android-system ${rootmnt}/android/system
		mount --bind ${rootmnt}/userdata ${rootmnt}/android/data


		# Apply device-specific udev rules
		if [ "$device" != "unknown" ]; then
			mount --bind ${rootmnt}/usr/lib/lxc-android-config/70-$device.rules ${rootmnt}/lib/udev/rules.d/70-android.rules
		fi

		# Bind-mount /lib/modules from Android
		[ -e /android/system/lib/modules ] && mount --bind /android/system/lib/modules ${rootmnt}/lib/modules

	# Old flipped model
	elif [ -d /tmpmnt/ubuntu ]; then
		mount --bind /tmpmnt/ubuntu ${rootmnt}
		mountroot_status="$?"

	# Possibly a re-partitioned device
	else
		echo "initrd: Couldn't find a system partition." >/dev/kmsg || true
		panic "Couldn't find a system partition. Spawning adbd ..."
	fi

	[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/local-bottom"
	run_scripts /scripts/local-bottom
	[ "$quiet" != "y" ] && log_end_msg
}