rpi: Add resize-rootfs=r0 (expand rootfs)

:Release Notes:
A service to expand the rootfs

:Detailed Notes:
Expand the rootfs as whole SD card.
This service will be executed on the first boot only.
(Creates /var/luna/preferences/rootfs-resized)

:Testing Performed:
See PLAT-80165

:QA Notes:
N/A

:Issues Addressed:
[PLAT-76087] [FOTA] Expand rootfs size and mount partitions for libostree
[PLAT-80165] [OSE] CCC: rpi: add resize-rootfs=r0 (expand rootfs)

Change-Id: I06b830f58f04cfe35ebd8c9794d8c96b1d10d387

meta-webos-raspberrypi/recipes-bsp/resize-rootfs/files/resize-rootfs.service

@@ -0,0 +1,24 @@
+# @@@LICENSE
+#
+# Copyright (c) 2019 LG Electronics, Inc.
+#
+# LICENSE@@@
+
+[Unit]
+Description=webos - "%n"
+DefaultDependencies=no
+Conflicts=shutdown.target
+Before=sysinit.target
+After=systemd-remount-fs.service local-fs.target
+Requires=local-fs.target
+ConditionPathExists=!/var/luna/preferences/rootfs_resized
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/etc/systemd/system/scripts/resize-rootfs.sh
+StandardOutput=tty
+StandardError=tty
+
+[Install]
+WantedBy=local-fs.target

meta-webos-raspberrypi/recipes-bsp/resize-rootfs/files/resize-rootfs.sh

@@ -0,0 +1,53 @@
+#!/bin/sh
+# Copyright (c) 2019 LG Electronics, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+if [ "$(id -u)" -ne "0" ]; then
+	echo "This script requires root."
+	exit 1
+fi
+
+PREF_DIR="/var/luna/preferences"
+DEVICE="/dev/mmcblk0"
+PART="2"
+
+updatePartitionTable() {
+	start=$(fdisk -l ${DEVICE}|grep ${DEVICE}p${PART}|awk '{print $2}')
+
+	fdisk ${DEVICE} <<EOF
+p
+d
+2
+n
+p
+2
+$start
+
+No
+w
+EOF
+	echo "Partition table updated!"
+}
+
+if [ -f ${PREF_DIR}/rootfs_resized ]; then
+	echo "Resize rootfs done already!"
+else
+	updatePartitionTable
+	partprobe
+	resize2fs ${DEVICE}p${PART}
+	touch ${PREF_DIR}/rootfs_resized
+	echo "Resize rootfs done!"
+fi

meta-webos-raspberrypi/recipes-bsp/resize-rootfs/resize-rootfs.bb

@@ -0,0 +1,27 @@
+# Copyright (c) 2019 LG Electronics, Inc.
+
+SUMMARY = "A service to expand rootfs to whole media"
+AUTHOR = "JeongBong Seo <jb.seo@lge.com>"
+SECTION = "webos/base"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
+
+RDEPENDS_${PN} = "e2fsprogs-resize2fs parted"
+
+PR = "r0"
+
+inherit systemd
+
+SRC_URI = " \
+    file://resize-rootfs.service \
+    file://resize-rootfs.sh \
+"
+
+do_install() {
+    install -d ${D}${systemd_system_unitdir}
+    install -v -m 0644 ${WORKDIR}/resize-rootfs.service ${D}${systemd_system_unitdir}
+    install -d ${D}${sysconfdir}/systemd/system/scripts
+    install -v -m 0755 ${WORKDIR}/resize-rootfs.sh ${D}${sysconfdir}/systemd/system/scripts
+}
+
+SYSTEMD_SERVICE_${PN} = " resize-rootfs.service"

meta-webos-raspberrypi/recipes-core/images/webos-image.bbappend

@@ -0,0 +1,6 @@
+# Copyright (c) 2019 LG Electronics, Inc.
+
+EXTENDPRAUTO_append_rpi = "webosrpi1"
+
+# resize-rootfs will expand rootfs, so we don't need extra space a lot
+IMAGE_ROOTFS_EXTRA_SPACE = "16384"

meta-webos-raspberrypi/recipes-core/packagegroups/packagegroup-webos-extended.bbappend

@@ -54,6 +54,7 @@ CAMERASERVICE_raspberrypi3-64 = ""
 
 RDEPENDS_${PN}_append_rpi = " \
     com.webos.service.audiooutput \
+    resize-rootfs \
     ${AISERVICE} \
     ${CAMERASERVICE} \
     ${TTSSERVICE} \