fixing raspi image (#2712)

* wip: fixing raspi image

* fix pi build

image-recipe/build.sh

@@ -317,18 +317,31 @@ elif [ "${IMAGE_TYPE}" = img ]; then
 
 	TMPDIR=$(mktemp -d)
 
-	mount `partition_for ${OUTPUT_DEVICE} 2` $TMPDIR
-	mkdir $TMPDIR/boot
+	mkdir -p $TMPDIR/boot $TMPDIR/root 
+	mount `partition_for ${OUTPUT_DEVICE} 2` $TMPDIR/root
 	mount `partition_for ${OUTPUT_DEVICE} 1` $TMPDIR/boot
-	unsquashfs -f -d $TMPDIR $prep_results_dir/binary/live/filesystem.squashfs
+	unsquashfs -n -f -d $TMPDIR $prep_results_dir/binary/live/filesystem.squashfs boot
+
+	mkdir $TMPDIR/root/images $TMPDIR/root/config
+	B3SUM=$(b3sum $prep_results_dir/binary/live/filesystem.squashfs | head -c 16)
+	cp $prep_results_dir/binary/live/filesystem.squashfs $TMPDIR/root/images/$B3SUM.rootfs
+	ln -rsf $TMPDIR/root/images/$B3SUM.rootfs $TMPDIR/root/config/current.rootfs
+
+	mkdir -p $TMPDIR/next $TMPDIR/lower $TMPDIR/root/config/work $TMPDIR/root/config/overlay
+	mount $TMPDIR/root/config/current.rootfs $TMPDIR/lower
+
+	mount -t overlay -o lowerdir=$TMPDIR/lower,workdir=$TMPDIR/root/config/work,upperdir=$TMPDIR/root/config/overlay overlay $TMPDIR/next
 
 	if [ "${IB_TARGET_PLATFORM}" = "raspberrypi" ]; then
-		sed -i 's| boot=startos| init=/usr/lib/startos/scripts/init_resize\.sh|' $TMPDIR/boot/cmdline.txt
-		rsync -a $base_dir/raspberrypi/img/ $TMPDIR/
+		sed -i 's| boot=startos| boot=startos init=/usr/lib/startos/scripts/init_resize\.sh|' $TMPDIR/boot/cmdline.txt
+		rsync -a $base_dir/raspberrypi/img/ $TMPDIR/next/
 	fi
 
+	umount $TMPDIR/next
+	umount $TMPDIR/lower
+
 	umount $TMPDIR/boot
-	umount $TMPDIR
+	umount $TMPDIR/root
 
 	e2fsck -fy `partition_for ${OUTPUT_DEVICE} 2`
 	resize2fs -M `partition_for ${OUTPUT_DEVICE} 2`

image-recipe/prepare.sh

@@ -21,7 +21,8 @@ apt-get install -yq \
 	dosfstools \
 	e2fsprogs \
 	squashfs-tools \
-	rsync
+	rsync \
+	b3sum
 # TODO: remove when util-linux is released at v2.39.3
 apt-get install -yq \
 	git \

image-recipe/raspberrypi/img/usr/lib/startos/scripts/init_resize.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 get_variables () {
-  ROOT_PART_DEV=$(findmnt / -o source -n)
+  ROOT_PART_DEV=$(findmnt /media/startos/root -o source -n)
   ROOT_PART_NAME=$(echo "$ROOT_PART_DEV" | cut -d "/" -f 3)
   ROOT_DEV_NAME=$(echo /sys/block/*/"${ROOT_PART_NAME}" | cut -d "/" -f 4)
   ROOT_DEV="/dev/${ROOT_DEV_NAME}"
@@ -89,12 +89,12 @@ main () {
 
   resize2fs $ROOT_PART_DEV
 
-  if ! systemd-machine-id-setup; then
+  if ! systemd-machine-id-setup --root=/media/startos/config/overlay/; then
     FAIL_REASON="systemd-machine-id-setup failed"
     return 1
   fi
 
-  if ! ssh-keygen -A; then
+  if ! mkdir -p /media/startos/config/overlay/etc/ssh && ssh-keygen -A -f /media/startos/config/overlay/; then
     FAIL_REASON="ssh host key generation failed"
     return 1
   fi
@@ -104,17 +104,14 @@ main () {
   return 0
 }
 
-mount -t proc proc /proc
-mount -t sysfs sys /sys
-mount -t tmpfs tmp /run
 mkdir -p /run/systemd
 mount /boot
 mount / -o remount,ro
 
 beep
 
 if main; then
-  sed -i 's| init=/usr/lib/startos/scripts/init_resize\.sh| boot=startos|' /boot/cmdline.txt
+  sed -i 's| init=/usr/lib/startos/scripts/init_resize\.sh||' /boot/cmdline.txt
   echo "Resized root filesystem. Rebooting in 5 seconds..."
   sleep 5
 else