Add a script to repack chromeos image into assets
Bug: N/A
Test: ./repack chromiumos_base_image.bin
Change-Id: I7ec1e151d823303fb26d826a893a81675f80b8b6
diff --git a/ferrochrome_app/repack.sh b/ferrochrome_app/repack.sh
new file mode 100755
index 0000000..d47b529
--- /dev/null
+++ b/ferrochrome_app/repack.sh
@@ -0,0 +1,53 @@
+#!/bin/bash
+# Repacks chromiumos_*.bin into the assets of FerrochromeApp
+
+usage() {
+ echo "Usage: $0 CHROME_OS_DISK_IMAGE"
+ exit 1
+}
+
+if [ "$#" -ne 1 ]; then
+ usage
+fi
+
+disk=$1
+
+loop=$(sudo losetup --show -f -P ${disk})
+kern=$(sudo fdisk -x ${loop} | grep KERN-A | awk "{print\$1}")
+root=$(sudo fdisk -x ${loop} | grep ROOT-A | awk "{print\$1}")
+efi=$(sudo fdisk -x ${loop} | grep EFI-SYSTEM | awk "{print\$1}")
+state=$(sudo fdisk -x ${loop} | grep STATE | awk "{print\$1}")
+root_guid=$(sudo fdisk -x ${loop} | grep ROOT-A | awk "{print\$6}")
+
+tempdir=$(mktemp -d)
+pushd ${tempdir} > /dev/null
+echo Extracting partition images...
+sudo cp --sparse=always ${kern} kernel.img
+sudo cp --sparse=always ${root} root.img
+sudo cp --sparse=always ${efi} efi.img
+sudo cp --sparse=always ${state} state.img
+sudo chmod 777 *.img
+
+echo Archiving. This can take long...
+tar czvS -f images.tar.gz *.img
+
+echo Calculating hash...
+hash=$(sha1sum images.tar.gz | cut -d' ' -f 1)
+
+echo Splitting...
+split -b 100M -d images.tar.gz images.tar.gz.part
+
+popd > /dev/null
+asset_dir=$(dirname $0)/assets/ferrochrome
+echo Updating ${asset_dir}...
+vm_config_template=$(dirname $0)/vm_config.json.template
+mkdir -p ${asset_dir}
+rm ${asset_dir}/images.tar.gz.part*
+mv ${tempdir}/images.tar.gz.part* ${asset_dir}
+sed -E s/GUID/${root_guid}/ ${vm_config_template} > ${asset_dir}/vm_config.json
+echo ${hash} > ${asset_dir}/version
+
+echo Cleanup...
+sudo losetup -d ${loop}
+rm -rf ${tempdir}
+echo Done.