51 lines
1.3 KiB
Shell
51 lines
1.3 KiB
Shell
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#!/usr/bin/env bash
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set -euo pipefail
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[[ $# -eq 1 ]] || {
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echo "usage: render-native-recovery-beacon.sh <output-directory>" >&2
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exit 64
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}
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mkdir -p "$1"
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output_root=$(cd "$1" && pwd)
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python3 - "${output_root}" <<'PY'
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import pathlib
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import sys
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output = pathlib.Path(sys.argv[1])
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header = (
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b"# GRUB Environment Block\n"
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b"# WARNING: Do not edit this file by tools other than grub-editenv!!!\n"
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)
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def write_environment(name: str, variables: bytes = b"") -> None:
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prefix = header + variables
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if len(prefix) > 1024:
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raise SystemExit(f"{name} exceeds the GRUB environment-block size")
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(output / name).write_bytes(prefix + b"#" * (1024 - len(prefix)))
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write_environment(
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"guanghu-recovery-active.env",
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b"guanghu_recovery=ubuntu\n",
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)
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write_environment("guanghu-recovery-clear.env")
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PY
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install -m 0755 /dev/stdin "${output_root}/08_guanghu_native_recovery" <<'EOF'
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#!/bin/sh
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exec tail -n +3 $0
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insmod loadenv
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set guanghu_recovery=
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if load_env --file '(hd0)68+2' guanghu_recovery; then
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if [ "${guanghu_recovery}" = "ubuntu" ]; then
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set default="gnulinux-simple-9842d3d6-a839-4127-bda7-f19137effe71"
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fi
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fi
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EOF
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sha256sum \
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"${output_root}/guanghu-recovery-active.env" \
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"${output_root}/guanghu-recovery-clear.env" \
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"${output_root}/08_guanghu_native_recovery" \
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>"${output_root}/SHA256SUMS"
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