2022-09-24 19:20:53 +09:00
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#!/bin/sh
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# デバイスイメージファイルの生成
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# Usage: bin/img-gen source dist.img
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# Required: fallocate gzip losetup mkfs.fat parted rsync
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set -eux
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2024-07-22 20:05:59 +09:00
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size=1.6G
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2022-09-24 19:20:53 +09:00
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src="$1"
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image="$2"
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fallocate -l "${size}" "${image}"
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parted --script "${image}" \
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mklabel gpt \
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mkpart p1 0 100% \
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set 1 esp on
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dev="$(losetup -f)"
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finally="losetup -d '${dev}'"
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trap 'sh -c "${finally}"' EXIT
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losetup -P "${dev}" "${image}"
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part="${dev}p1"
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mkfs.fat -n CIDATA "${part}"
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tmp="$(mktemp -d)"
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finally="rmdir '${tmp}'; ${finally}"
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mount "${part}" "${tmp}"
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finally="umount '${tmp}'; ${finally}"
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rsync -rtv "${src}/" "${tmp}/"
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finally="${finally}; gzip -f '${image}'"
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