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#!/bin/bash
# License: GPL
# Author: Steven Shiau <steven _at_ clonezilla org>
# Description: Program to generate JSON file from lsblk output with ID_PATH_TAG, excluding loop* devices
# This file contains code generated by Grok, created by xAI.
# Improved by Google's Gemini for efficiency and robustness.
USAGE() {
echo "$0 - To generate JSON file from lsblk output with ID_PATH_TAG, excluding loop* devices"
echo "Usage:"
echo "To run $0:"
echo "$0 OUTPUT_FILE"
echo
} # end of USAGE
####################
### Main program ###
####################
if [ "$#" -ne 1 ] || [[ "$1" == -* ]]; then
USAGE >&2
exit 1
fi
ocs_out_f="$1"
# Ensure udev has processed all devices
udevadm settle
# Run lsblk with JSON output, excluding loop, ram, and rom devices (-e 1,7,11)
lsblk_output=$(LC_ALL=C lsblk -J -o name,type,size,model,fstype,serial,label,parttype -e 1,7,11 -x name 2>/dev/null)
# Check if lsblk output is empty or contains no devices
if [ -z "$lsblk_output" ] || [ "$(echo "$lsblk_output" | jq '.blockdevices | length')" -eq 0 ]; then
echo "[]" > "$ocs_out_f"
exit 0
fi
# Process the entire JSON output
echo "$lsblk_output" | jq -c '.blockdevices[]' | while IFS= read -r device_json; do
# Extract name to query udevadm
name=$(echo "$device_json" | jq -r '.name')
dev_path="/dev/$name"
# Query udevadm for ID_PATH_TAG
id_path_tag=$(udevadm info --query=property --name="$dev_path" 2>/dev/null | grep '^ID_PATH_TAG=' | cut -d'=' -f2)
# If ID_PATH_TAG is empty, set it to "N/A"
id_path_tag=${id_path_tag:-N/A}
# Safely inject the ID path tag, handle nulls, and replace spaces and quotes with underscores.
echo "$device_json" | jq --arg id_path_tag "$id_path_tag" '
. + {id_path_tag: $id_path_tag} |
with_entries(
if .value == null then
.value = ""
elif .value | type == "string" then
# Replaces double quotes, single quotes, and spaces with an underscore
.value |= gsub("[\"'\'' ]"; "_")
else
.
end
)
'
done | jq -s . > "$ocs_out_f"
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