emissary-firmware/misc/x86/uci-defaults/99-machine-id.sh
William Petit ede2142b9f
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feat(x86): use random uuid to generate machine id
2024-03-08 20:15:11 +01:00

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#/bin/sh
set -e
main() {
local machine_id_file="/etc/machine-id"
if [ -f "$machine_id_file" ]; then
echo "Machine ID already generated. Doing nothing."
exit 0
fi
# Accumulate data to create unique machine id
local random_uuid=$(cat /proc/sys/kernel/random/uuid)
# Ensure destination directory
mkdir -p "$(dirname "$machine_id_file")"
# Generate SHA256 hash of data and save it to $machine_id_file
echo "$random_uuid" | sha256sum | cut -d ' ' -f1 > "$machine_id_file"
}
main