poky/meta/recipes-core/initrdscripts/initramfs-framework/finish

#!/bin/sh
# Copyright (C) 2011 O.S. Systems Software LTDA.
# Licensed on MIT

finish_enabled() {
	return 0
}

finish_run() {
	if [ -n "$ROOTFS_DIR" ]; then
		if [ ! -d $ROOTFS_DIR/dev ]; then
			fatal "ERROR: There's no '/dev' on rootfs."
		fi

		# Unmount anything that was automounted by busybox via mdev-mount.sh.
		# We're about to switch_root, and leaving anything mounted will prevent
		# the next rootfs from modifying the block device.  Ignore ROOT_DISK,
		# if it was set by setup-live, because it'll be mounted over loopback
		# to ROOTFS_DIR.
		local dev
		for dev in /run/media/*; do
			if mountpoint -q "${dev}" && [ "${dev##*/}" != "${ROOT_DISK}" ]; then
				umount -f "${dev}" || debug "Failed to unmount ${dev}"
			fi
		done

		info "Switching root to '$ROOTFS_DIR'..."

		debug "Moving basic mounts onto rootfs"
		for dir in `awk '/\/dev.* \/run\/media/{print $2}' /proc/mounts`; do
			# Parse any OCT or HEX encoded chars such as spaces
			# in the mount points to actual ASCII chars
			dir=`printf $dir`
			mkdir -p "${ROOTFS_DIR}/media/${dir##*/}"
			mount -n --move "$dir" "${ROOTFS_DIR}/media/${dir##*/}"
		done

		debug "Moving /dev, /proc, /sys and /run onto rootfs..."
		mount --move /dev $ROOTFS_DIR/dev
		mount --move /proc $ROOTFS_DIR/proc
		mount --move /sys $ROOTFS_DIR/sys
		mount --move /run $ROOTFS_DIR/run

		cd $ROOTFS_DIR
		exec switch_root $ROOTFS_DIR ${bootparam_init:-/sbin/init}
	else
		debug "No rootfs has been set"
	fi
}