[IMP] point_of_sale: Modify the partitions of the IoT Box

Extend boot partition to 512Mo to be compatible
with a future version of Raspbian and auto flash

X-original-commit: a9a8aa5e

addons/point_of_sale/tools/posbox/posbox_create_image.sh

@@ -67,40 +67,60 @@ rm -v ngrok.zip
 cd "${__dir}"
 mv -v /tmp/ngrok "${USR_BIN}"
 
-# zero pad the image to be around 3.5 GiB, by default the image is only ~1.3 GiB
+# zero pad the image to be around 4.4 GiB, by default the image is only ~2.2 GiB
 echo "Enlarging the image..."
 dd if=/dev/zero bs=1M count=2048 status=progress >> iotbox.img
 
 # resize partition table
 echo "Fdisking"
+
+SECTORS_BOOT_START=$(sudo fdisk -l iotbox.img | tail -n 2 | awk 'NR==1 {print $2}')
+SECTORS_BOOT_END=$((SECTORS_BOOT_START + 1048576)) # sectors to have a partition of ~512Mo
+SECTORS_ROOT_START=$((SECTORS_BOOT_END + 1))
+
 START_OF_ROOT_PARTITION=$(fdisk -l iotbox.img | tail -n 1 | awk '{print $2}')
 (echo 'p';                          # print
  echo 'd';                          # delete
- echo '2';                          #   second partition
+ echo '2';                          #    number 2
+ echo 'd';                          # delete number 1 by default
+ echo 'n';                          # create new partition
+ echo 'p';                          #   primary
+ echo '1';                          #   number 1
+ echo "${SECTORS_BOOT_START}";      #   first sector
+ echo "${SECTORS_BOOT_END}";        #   partition size
+ echo 't';                          # change type of partition. 1 selected by default
+ echo 'c';                          #   change to W95 FAT32 (LBA)
  echo 'n';                          # create new partition
  echo 'p';                          #   primary
  echo '2';                          #   number 2
- echo "${START_OF_ROOT_PARTITION}"; #   starting at previous offset
+ echo "${SECTORS_ROOT_START}";      #   starting at previous offset
  echo '';                           #   ending at default (fdisk should propose max)
  echo 'p';                          # print
  echo 'w') | fdisk iotbox.img       # write and quit
 
-LOOP=$(kpartx -avs iotbox.img)
-LOOP_MAPPER_PATH=$(echo "${LOOP}" | tail -n 1 | awk '{print $3}')
-LOOP_PATH="/dev/${LOOP_MAPPER_PATH::-2}"
-LOOP_MAPPER_PATH="/dev/mapper/${LOOP_MAPPER_PATH}"
-LOOP_MAPPER_BOOT=$(echo "${LOOP}" | tail -n 2 | awk 'NR==1 {print $3}')
-LOOP_MAPPER_BOOT="/dev/mapper/${LOOP_MAPPER_BOOT}"
+LOOP_RASPBIAN=$(kpartx -avs "${RASPBIAN}")
+LOOP_RASPBIAN_ROOT=$(echo "${LOOP_RASPBIAN}" | tail -n 1 | awk '{print $3}')
+LOOP_RASPBIAN_PATH="/dev/${LOOP_RASPBIAN_ROOT::-2}"
+LOOP_RASPBIAN_ROOT="/dev/mapper/${LOOP_RASPBIAN_ROOT}"
+
+LOOP_IOT=$(kpartx -avs iotbox.img)
+LOOP_IOT_ROOT=$(echo "${LOOP_IOT}" | tail -n 1 | awk '{print $3}')
+LOOP_IOT_PATH="/dev/${LOOP_IOT_ROOT::-2}"
+LOOP_IOT_ROOT="/dev/mapper/${LOOP_IOT_ROOT}"
+LOOP_IOT_BOOT=$(echo "${LOOP_IOT}" | tail -n 2 | awk 'NR==1 {print $3}')
+LOOP_IOT_BOOT="/dev/mapper/${LOOP_IOT_BOOT}"
+
+mkfs.ext4 -v "${LOOP_IOT_ROOT}"
 
-sleep 5
+dd if="${LOOP_RASPBIAN_ROOT}" of="${LOOP_IOT_ROOT}" bs=4M status=progress
 
 # resize filesystem
-e2fsck -f "${LOOP_MAPPER_PATH}" # resize2fs requires clean fs
-resize2fs "${LOOP_MAPPER_PATH}"
+e2fsck -fv "${LOOP_IOT_ROOT}" # resize2fs requires clean fs
+resize2fs "${LOOP_IOT_ROOT}"
 
-mkdir -p "${MOUNT_POINT}" #-p: no error if existing
-mount "${LOOP_MAPPER_PATH}" "${MOUNT_POINT}"
-mount "${LOOP_MAPPER_BOOT}" "${MOUNT_POINT}/boot/"
+mkdir -pv "${MOUNT_POINT}" #-p: no error if existing
+mount -v "${LOOP_IOT_ROOT}" "${MOUNT_POINT}"
+mount -v "${LOOP_IOT_BOOT}" "${MOUNT_POINT}/boot/"
 
 QEMU_ARM_STATIC="/usr/bin/qemu-arm-static"
 cp -v "${QEMU_ARM_STATIC}" "${MOUNT_POINT}/usr/bin/"
@@ -129,6 +149,7 @@ umount -fv "${MOUNT_POINT}"/
 rm -rfv "${MOUNT_POINT}"
 
 echo "Running zerofree..."
-zerofree -v "${LOOP_MAPPER_PATH}" || true
+zerofree -v "${LOOP_IOT_ROOT}" || true
 
-kpartx -d "${LOOP_PATH}"
+kpartx -dv "${LOOP_IOT_PATH}"
+kpartx -dv "${LOOP_RASPBIAN_PATH}"