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https://github.com/edgelesssys/constellation.git
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62 lines
1.5 KiB
Bash
Executable File
62 lines
1.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright (c) Edgeless Systems GmbH
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#
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# SPDX-License-Identifier: AGPL-3.0-only
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set -euo pipefail
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shopt -s inherit_errexit
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# Show progress on pipes if `pv` is installed
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# Otherwise use plain cat
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if ! command -v pv &> /dev/null; then
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PV="cat"
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else
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PV="pv"
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fi
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pack() {
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local cloudprovider=$1
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local unpacked_image=$2
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local packed_image=$3
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local unpacked_image_dir
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unpacked_image_dir=$(mktemp -d)
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local unpacked_image_filename
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unpacked_image_filename=disk.raw
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local tmp_tar_file
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tmp_tar_file=$(mktemp -t verity.XXXXXX.tar)
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cp "${unpacked_image}" "${unpacked_image_dir}/${unpacked_image_filename}"
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case ${cloudprovider} in
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gcp)
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echo "📥 Packing GCP image..."
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tar --owner=0 --group=0 -C "${unpacked_image_dir}" -Sch --format=oldgnu -f "${tmp_tar_file}" "${unpacked_image_filename}"
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"${PV}" "${tmp_tar_file}" | pigz -9c > "${packed_image}"
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rm "${tmp_tar_file}"
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echo " Repacked image stored in ${packed_image}"
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;;
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azure)
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echo "📥 Packing Azure image..."
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truncate -s %1MiB "${unpacked_image_dir}/${unpacked_image_filename}"
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qemu-img convert -p -f raw -O vpc -o force_size,subformat=fixed "${unpacked_image_dir}/${unpacked_image_filename}" "${packed_image}"
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echo " Repacked image stored in ${packed_image}"
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;;
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*)
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echo "unknown cloud provider"
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exit 1
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;;
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esac
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rm -r "${unpacked_image_dir}"
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}
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if [[ $# -ne 3 ]]; then
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echo "Usage: $0 <cloudprovider> <unpacked_image> <packed_image>"
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exit 1
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fi
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pack "${1}" "${2}" "${3}"
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