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

#!/bin/sh

Copyright (C) 2011 O.S. Systems Software LTDA.

Licensed on MIT

rootfs_enabled() { return 0 }

rootfs_run() { if [ -z "$ROOTFS_DIR" ]; then return fi C=0 delay=${bootparam_rootdelay:-1} timeout=${bootparam_roottimeout:-5} while ! mountpoint -q $ROOTFS_DIR; do if [ $(( $C * $delay )) -gt $timeout ]; then fatal "root '$bootparam_root' doesn't exist or does not contain a /dev." fi

	if [ -n "$bootparam_root" ]; then
		debug "No e2fs compatible filesystem has been mounted, mounting $bootparam_root..."

		if [ "`echo ${bootparam_root} | cut -c1-5`" = "UUID=" ]; then
			root_uuid=`echo $bootparam_root | cut -c6-`
			bootparam_root="/dev/disk/by-uuid/$root_uuid"
		elif [ "`echo ${bootparam_root} | cut -c1-9`" = "PARTUUID=" ]; then
			root_partuuid=`echo $bootparam_root | cut -c10-`
			bootparam_root="/dev/disk/by-partuuid/$root_partuuid"
		elif [ "`echo ${bootparam_root} | cut -c1-10`" = "PARTLABEL=" ]; then
			root_partlabel=`echo $bootparam_root | cut -c11-`
			bootparam_root="/dev/disk/by-partlabel/$root_partlabel"
		elif [ "`echo ${bootparam_root} | cut -c1-6`" = "LABEL=" ]; then
			root_label=`echo $bootparam_root | cut -c7-`
			bootparam_root="/dev/disk/by-label/$root_label"
		elif echo "${bootparam_root}" | grep -q '^ubi[0-9]\+:'; then
			bootparam_rootfstype="ubifs"
		fi

		if [ -e "$bootparam_root" ] || [ -n "$bootparam_rootfstype" ]; then
			flags=""
			if [ -n "$bootparam_ro" ] && ! echo "$bootparam_rootflags" | grep -w -q "ro"; then
				if [  -n "$bootparam_rootflags" ]; then
					bootparam_rootflags="$bootparam_rootflags,"
				fi
				bootparam_rootflags="${bootparam_rootflags}ro"
			fi
			if [ -n "$bootparam_rootflags" ]; then
				flags="$flags -o$bootparam_rootflags"
			fi
			if [ -n "$bootparam_rootfstype" ]; then
				flags="$flags -t$bootparam_rootfstype"
			fi
			debug "mount $flags $bootparam_root $ROOTFS_DIR"
			mount $flags $bootparam_root $ROOTFS_DIR
			if mountpoint -q $ROOTFS_DIR; then
				break
			else
				# It is unlikely to change, but keep trying anyway.
				# Perhaps we pick a different device next time.
				umount $ROOTFS_DIR
			fi
		fi
	fi
	debug "Sleeping for $delay second(s) to wait for root to settle..."
	sleep $delay
	C=$(( $C + 1 ))
done

}