Marc S. Weidner
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Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
125 lines
4.1 KiB
Bash
125 lines
4.1 KiB
Bash
#!/bin/bash
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# SPDX-Version: 3.0
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# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
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# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
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# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
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# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
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# SPDX-FileType: SOURCE
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# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
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# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
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# SPDX-PackageName: CISS.debian.installer
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# SPDX-Security-Contact: security@coresecret.eu
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guard_sourcing
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#######################################
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# Returns standardized labels for the provided mount path depending on filesystem and art of label.
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# Globals:
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# None
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# Arguments:
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# 1: Mount path (e.g., '/' '/boot' '/var/log/audit' 'SWAP' '/boot/efi')
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# 2: Filesystem type: one of: [BIOS, btrfs, ext4, fat32, swap]
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# 3: Desired return label: one of: [part, luks, file, sub, snap]
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# Returns:
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# Prints resulting label to stdout.
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#######################################
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get_label() {
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declare var_path="${1,,}"
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declare var_file="${2,,}"
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declare var_kind="${3,,}"
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### Normalize 'mount.path': remove leading slash and replace slashes with underscore.
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declare var_return_label=""
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declare var_normalized="${var_path#/}" # Strip leading "/".
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var_normalized="${var_normalized//\//_}" # Replace "/" with "_"
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[[ -z "${var_normalized}" ]] && var_normalized="root" # Edge case "/".
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case "${var_kind}" in
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part)
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case "${var_path}" in
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swap) var_return_label="part_ephem_swap" ;;
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/tmp) var_return_label="part_ephem_tmp" ;;
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/boot/efi) var_return_label="part_esp" ;;
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/) var_return_label="part_root" ;;
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*) var_return_label="part_${var_normalized}" ;;
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esac
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;;
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luks)
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case "${var_path}" in
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/tmp) var_return_label="crypt_ephem_tmp" ;;
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swap) var_return_label="crypt_ephem_swap" ;;
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/boot/efi) var_return_label="" ;;
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/) var_return_label="crypt_root" ;;
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*) var_return_label="crypt_${var_normalized}" ;;
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esac
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;;
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file)
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# shellcheck disable=SC2249
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case "${var_path}:${var_file}" in
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swap:*) var_return_label="host_swap" ;;
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/tmp:*) var_return_label="host_tmp" ;;
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/boot/efi:*) var_return_label="ESP" ;;
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/var/log/audit:ext4) var_return_label="ext4_var_audit" ;;
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*:ext4) var_return_label="ext4_${var_normalized}"
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if (( ${#var_return_label} > 16 )); then
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do_log "warn" "file_only" "3295() Label: '${var_return_label}' of type: '${var_kind}' created for: '${var_path}' exceeds 16 chars, truncating."
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var_return_label="${var_return_label:0:16}"
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fi
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;;
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*:btrfs) var_return_label="btrfs_${var_normalized}" ;;
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*:*) var_return_label="${var_file}_${var_normalized}" ;;
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esac
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;;
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sub)
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if [[ "${var_file}" == "btrfs" ]]; then
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var_return_label="@${var_normalized}"
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fi
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;;
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snap)
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if [[ "${var_file}" == "btrfs" ]]; then
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var_return_label="@${var_normalized}_snap"
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fi
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;;
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*)
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do_log "warn" "3295() File_only" "Unknown kind: ${var_kind}"
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return 0
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;;
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esac
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if [[ -n "${var_return_label}" ]]; then
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do_log "info" "file_only" "3295() Label: '${var_return_label}' of type: '${var_kind}' created for: '${var_path}'."
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printf "%s\n" "${var_return_label}"
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return 0
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else
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do_log "warn" "file_only" "3295() Label not resolved: of type: '${var_kind}' for: '${var_path}' and FS: '${var_file}'."
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return 0
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fi
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}
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### Prevents accidental 'unset -f'.
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# shellcheck disable=SC2034
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readonly -f get_label
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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