V8.00.000.2025.06.17
Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
This commit is contained in:
353
func/4040_generate_fstab.sh
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353
func/4040_generate_fstab.sh
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#!/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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# Generate target '/etc/fstab' entries.
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# Globals:
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# ERR_NO_DEVIC_PATH
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# ERR_NO_ENCR_LABEL
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# MAP_EPHEMERAL_ENCLABEL
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# MAP_MOUNTPATH_DEV
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# MODULE_ERR
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# MODULE_TXT
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# RECIPE_STRING
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# TARGET
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# Arguments:
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# None
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###########################################################################################
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generate_fstab() {
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### Generate '${TARGET}/etc/fstab' header
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touch "${TARGET}/etc/fstab"
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chmod 0644 "${TARGET}/etc/fstab"
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cat << 'EOF' >> "${TARGET}/etc/fstab"
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# /etc/fstab: static file system information.
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#
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# Use 'blkid' to print the universally unique identifier for a
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# device; this may be used with UUID= as a more robust way to name devices
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# that works even if disks are added and removed. See fstab(5).
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#
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# systemd generates mount units based on this file, see systemd.mount(5).
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# Please run 'systemctl daemon-reload' after making changes here.
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#
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# <file system> <mount point> <type> <options> <dump> <pass>
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EOF
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### Generate '${TARGET}/etc/fstab' special entries '/' '/boot' '/boot/efi'.
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### Define the order of the special paths.
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declare -a var_path_order ary_devs ary_parts
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declare var_dev var_part
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var_path_order=("/" "/boot" "/boot/efi")
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### Iterate over all devices in the recipe.
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readarray -t ary_devs < <(yq e -r ".recipe.${VAR_RECIPE_STRING}.dev | keys | .[]" "${VAR_SETUP_PART}")
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for var_dev in "${ary_devs[@]}"; do
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### Iterate over all partitions for this device.
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readarray -t ary_parts < <(yq e -r ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev} | keys | .[]" "${VAR_SETUP_PART}")
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for var_part in "${ary_parts[@]}"; do
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### Extract parameters from YAML.
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var_fs_btrfs_compress=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.compress" "${VAR_SETUP_PART}")
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var_fs_btrfs_level=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.level" "${VAR_SETUP_PART}")
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var_fs_btrfs_subvolume=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.subvolume" "${VAR_SETUP_PART}")
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var_fs_btrfs_snapshot=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.snapshot" "${VAR_SETUP_PART}")
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var_encryption_enable=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.encryption.enable" "${VAR_SETUP_PART}")
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var_encryption_label=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.encryption.label" "${VAR_SETUP_PART}")
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var_fs_label=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.label" "${VAR_SETUP_PART}")
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var_fs_options=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.options" "${VAR_SETUP_PART}")
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var_fs_version=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.version" "${VAR_SETUP_PART}")
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var_mount_path=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.path" "${VAR_SETUP_PART}")
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var_mount_options=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.options" "${VAR_SETUP_PART}")
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var_mount_optsnap=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.optsnap" "${VAR_SETUP_PART}")
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done
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done
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### Reminder ###
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# HMP_MOUNTPATH_DEV["${MOUNT_PATH}"]="/dev/mapper/${ENCRYPTION_LABEL}"
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# HMP_MOUNTPATH_DEV["${MOUNT_PATH}"]="/dev/${DEV}${PARTITION}"
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### Generate '${TARGET}/etc/fstab' special entries '/' '/boot' '/boot/efi'.
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### Define the order of the special paths.
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declare -a var_path_order
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var_path_order=("/" "/boot" "/boot/efi")
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declare var_device_path var_device_uuid var_encryption_label var_path
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declare MATCHING_VAR
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declare TRANSFORMED_STRING
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for var_path in "${var_path_order[@]}"; do
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# Initialize variables
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var_device_path="${HMP_MOUNTPATH_DEV[${var_path}]}"
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var_device_uuid=$(blkid -s UUID -o value "${var_device_path}")
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# if KEY:VALUE equals "/dev/${DEV}${PARTITION}"
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if [[ ${var_device_path} =~ ^/dev/[a-zA-Z]+[0-9]+$ ]]; then
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TRANSFORMED_STRING=$(echo "${var_device_path}" | sed 's|/dev/|dev_|; s|\([a-zA-Z]\)\([0-9]\)|\1_\2|')
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# if KEY:VALUE equals "/dev/mapper/${ENCRYPTION_LABEL}"
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elif [[ ${var_device_path} =~ ^/dev/mapper/ ]]; then
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# Extract ENCRYPTION_LABEL
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var_encryption_label="${var_device_path#/dev/mapper/}"
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# Search matching variable of a sourced "${PRESEED}" variable file
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MATCHING_VAR=$(declare -p | grep -oP "recipe_[^ ]+_encryption_label=${var_encryption_label}")
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if [[ -n ${MATCHING_VAR} ]]; then
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# Extract third, fourth and fifth part of the respective variable
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TRANSFORMED_STRING=$(echo "${MATCHING_VAR}" | sed -E 's|recipe_[^_]+_(dev_[^_]+_[^_]+)_.*|\1|')
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else
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do_log "error" "false" "No matching variable found for ENCRYPTION_LABEL='${var_encryption_label}'."
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exit "${ERR_NO_ENCR_LABEL}"
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fi
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else
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do_log "error" "false" "Unknown DEVICE_PATH-Format: '${var_device_path}'."
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exit "${ERR_NO_DEVIC_PATH}"
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fi
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declare BTRFS_COMPR_VAR="recipe_${RECIPE_STRING}_${TRANSFORMED_STRING}_filesystem_btrfs_compress"
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declare BTRFS_LEVEL_VAR="recipe_${RECIPE_STRING}_${TRANSFORMED_STRING}_filesystem_btrfs_level"
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declare FILESYSTEM_LABEL_VAR="recipe_${RECIPE_STRING}_${TRANSFORMED_STRING}_filesystem_label"
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declare FILESYSTEM_VERSION_VAR="recipe_${RECIPE_STRING}_${TRANSFORMED_STRING}_filesystem_version"
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declare MOUNT_OPTIONS_VAR="recipe_${RECIPE_STRING}_${TRANSFORMED_STRING}_mount_options"
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declare MOUNT_SUBVOLUME_VAR="recipe_${RECIPE_STRING}_${TRANSFORMED_STRING}_mount_subvolume"
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declare BTRFS_COMPR=${!BTRFS_COMPR_VAR}
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declare BTRFS_LEVEL=${!BTRFS_LEVEL_VAR}
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declare FILESYSTEM_LABEL=${!FILESYSTEM_LABEL_VAR}
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declare FILESYSTEM_VERSION=${!FILESYSTEM_VERSION_VAR}
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declare MOUNT_OPTIONS=${!MOUNT_OPTIONS_VAR}
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declare MOUNT_SUBVOLUME=${!MOUNT_SUBVOLUME_VAR}
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if [[ ${var_path} == "/" ]]; then
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if [[ ${FILESYSTEM_VERSION} == "btrfs" ]]; then
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declare BTRFS_OPTIONS="compress=${BTRFS_COMPR}:${BTRFS_LEVEL}"
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# shellcheck disable=2129
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echo "# ${var_path} was on ${MAP_MOUNTPATH_DEV[${var_path}]} during installation" >> "${TARGET}"/etc/fstab
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echo "# ${var_path} was on ${var_device_uuid} during installation" >> "${TARGET}"/etc/fstab
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echo "${MAP_MOUNTPATH_DEV[${var_path}]} ${var_path} ${FILESYSTEM_VERSION} ${MOUNT_OPTIONS},${BTRFS_OPTIONS},subvol=${MOUNT_SUBVOLUME} 0 1" >> "${TARGET}"/etc/fstab
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echo "" >> "${TARGET}"/etc/fstab
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do_log "info" "false" "fstab entry generated: '${MAP_MOUNTPATH_DEV[${var_path}]} ${var_path} ${FILESYSTEM_VERSION} ${MOUNT_OPTIONS},${BTRFS_OPTIONS},subvol=${MOUNT_SUBVOLUME} 0 1'."
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elif [[ ${FILESYSTEM_VERSION} == "ext4" ]]; then
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# shellcheck disable=2129
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echo "# ${var_path} was on ${MAP_MOUNTPATH_DEV[${var_path}]} during installation" >> "${TARGET}"/etc/fstab
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echo "# ${var_path} was on ${var_device_uuid} during installation" >> "${TARGET}"/etc/fstab
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echo "${MAP_MOUNTPATH_DEV[${var_path}]} ${var_path} ${FILESYSTEM_VERSION} ${MOUNT_OPTIONS} 0 1" >> "${TARGET}"/etc/fstab
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echo "" >> "${TARGET}"/etc/fstab
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do_log "info" "false" "fstab entry generated: '${MAP_MOUNTPATH_DEV[${var_path}]} ${var_path} ${FILESYSTEM_VERSION} ${MOUNT_OPTIONS} 0 1'."
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else
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do_log "error" "false" "fstab entry - no valid filesystem: '${FILESYSTEM_VERSION}' found for '${var_path}'."
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fi
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elif [[ ${var_path} == "/boot" ]]; then
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if [[ ${FILESYSTEM_VERSION} == "btrfs" ]]; then
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declare BTRFS_OPTIONS="compress=${BTRFS_COMPR}:${BTRFS_LEVEL}"
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# shellcheck disable=2129
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echo "# ${var_path} was on ${MAP_MOUNTPATH_DEV[${var_path}]} during installation" >> "${TARGET}"/etc/fstab
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echo "# ${var_path} was on ${var_device_uuid} during installation" >> "${TARGET}"/etc/fstab
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echo "UUID=${var_device_uuid} ${var_path} ${FILESYSTEM_VERSION} ${MOUNT_OPTIONS},${BTRFS_OPTIONS},subvol=${MOUNT_SUBVOLUME} 0 2" >> "${TARGET}"/etc/fstab
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echo "" >> "${TARGET}"/etc/fstab
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do_log "info" "false" "fstab entry generated: 'UUID=${var_device_uuid} ${var_path} ${FILESYSTEM_VERSION} ${MOUNT_OPTIONS},${BTRFS_OPTIONS},subvol=${MOUNT_SUBVOLUME} 0 2'."
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elif [[ ${FILESYSTEM_VERSION} == "ext4" ]]; then
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# shellcheck disable=2129
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echo "# ${var_path} was on ${MAP_MOUNTPATH_DEV[${var_path}]} during installation" >> "${TARGET}"/etc/fstab
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echo "# ${var_path} was on ${var_device_uuid} during installation" >> "${TARGET}"/etc/fstab
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echo "UUID=${var_device_uuid} ${var_path} ${FILESYSTEM_VERSION} ${MOUNT_OPTIONS} 0 2" >> "${TARGET}"/etc/fstab
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echo "" >> "${TARGET}"/etc/fstab
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do_log "info" "false" "fstab entry generated: 'UUID=${var_device_uuid} ${var_path} ${FILESYSTEM_VERSION} ${MOUNT_OPTIONS} 0 2'."
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else
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do_log "error" "false" "fstab entry - no valid filesystem: '${FILESYSTEM_VERSION}' found for '${var_path}'."
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fi
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elif [[ ${var_path} == "/boot/efi" ]]; then
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if [[ ${FILESYSTEM_VERSION} == "fat32" ]]; then
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# shellcheck disable=2129
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echo "# ${var_path} was on ${MAP_MOUNTPATH_DEV[${var_path}]} during installation" >> "${TARGET}"/etc/fstab
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echo "# ${var_path} was on ${var_device_uuid} during installation" >> "${TARGET}"/etc/fstab
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echo "UUID=${var_device_uuid} ${var_path} vfat umask=0077 0 2" >> "${TARGET}"/etc/fstab
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echo "" >> "${TARGET}"/etc/fstab
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do_log "info" "false" "fstab entry generated: 'UUID=${var_device_uuid} ${var_path} vfat umask=0077 0 2'."
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else
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do_log "error" "false" "fstab entry - no valid filesystem: '${FILESYSTEM_VERSION}' found for '${var_path}'."
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fi
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else
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do_log "error" "false" "fstab entry - no valid '${var_path}' for '/', '/boot', '/boot/efi' found."
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fi
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done
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# Generate '${TARGET}/etc/fstab' remaining entries
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for var_path in "${!MAP_MOUNTPATH_DEV[@]}"; do
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# Initialize variables
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var_device_path="${MAP_MOUNTPATH_DEV[${var_path}]}"
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var_device_uuid=$(blkid -s UUID -o value "${var_device_path}")
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# if KEY:VALUE equals "/dev/${DEV}${PARTITION}"
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if [[ ${var_device_path} =~ ^/dev/[a-zA-Z]+[0-9]+$ ]]; then
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TRANSFORMED_STRING=$(echo "${var_device_path}" | sed 's|/dev/|dev_|; s|\([a-zA-Z]\)\([0-9]\)|\1_\2|')
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# if KEY:VALUE equals "/dev/mapper/${ENCRYPTION_LABEL}"
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elif [[ ${var_device_path} =~ ^/dev/mapper/ ]]; then
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# Extract ENCRYPTION_LABEL
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var_encryption_label="${var_device_path#/dev/mapper/}"
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# Search matching variable of a sourced "${PRESEED}" variable file
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MATCHING_VAR=$(declare -p | grep -oP "recipe_[^ ]+_encryption_label=${var_encryption_label}")
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if [[ -n ${MATCHING_VAR} ]]; then
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# Extract third, fourth and fifth part of the respective variable
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TRANSFORMED_STRING=$(echo "${MATCHING_VAR}" | sed -E 's|recipe_[^_]+_(dev_[^_]+_[^_]+)_.*|\1|')
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else
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do_log "error" "false" "No matching variable found for ENCRYPTION_LABEL='${var_encryption_label}'."
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exit "${ERR_NO_ENCR_LABEL}"
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fi
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else
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do_log "error" "false" "Unknown DEVICE_PATH-Format: '${var_device_path}'."
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exit "${ERR_NO_DEVIC_PATH}"
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fi
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declare BTRFS_COMPR_VAR="recipe_${RECIPE_STRING}_${TRANSFORMED_STRING}_filesystem_btrfs_compress"
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declare BTRFS_LEVEL_VAR="recipe_${RECIPE_STRING}_${TRANSFORMED_STRING}_filesystem_btrfs_level"
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declare FILESYSTEM_LABEL_VAR="recipe_${RECIPE_STRING}_${TRANSFORMED_STRING}_filesystem_label"
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declare FILESYSTEM_VERSION_VAR="recipe_${RECIPE_STRING}_${TRANSFORMED_STRING}_filesystem_version"
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declare MOUNT_OPTIONS_VAR="recipe_${RECIPE_STRING}_${TRANSFORMED_STRING}_mount_options"
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declare MOUNT_SUBVOLUME_VAR="recipe_${RECIPE_STRING}_${TRANSFORMED_STRING}_mount_subvolume"
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declare BTRFS_COMPR=${!BTRFS_COMPR_VAR}
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declare BTRFS_LEVEL=${!BTRFS_LEVEL_VAR}
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declare FILESYSTEM_LABEL=${!FILESYSTEM_LABEL_VAR}
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declare FILESYSTEM_VERSION=${!FILESYSTEM_VERSION_VAR}
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declare MOUNT_OPTIONS=${!MOUNT_OPTIONS_VAR}
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declare MOUNT_SUBVOLUME=${!MOUNT_SUBVOLUME_VAR}
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# Skip already mounted paths ("/", "/boot", "/boot/efi")
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if [[ " ${var_path_order[*]} " == *" ${var_path} "* ]]; then
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continue
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fi
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if [[ ${FILESYSTEM_VERSION} == "btrfs" ]]; then
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declare BTRFS_OPTIONS="compress=${BTRFS_COMPR}:${BTRFS_LEVEL}"
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# shellcheck disable=2129
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echo "# ${var_path} was on ${MAP_MOUNTPATH_DEV[${var_path}]} during installation" >> "${TARGET}"/etc/fstab
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echo "# ${var_path} was on ${var_device_uuid} during installation" >> "${TARGET}"/etc/fstab
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echo "UUID=${var_device_uuid} ${var_path} ${FILESYSTEM_VERSION} ${MOUNT_OPTIONS},${BTRFS_OPTIONS},subvol=${MOUNT_SUBVOLUME} 0 2" >> "${TARGET}"/etc/fstab
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echo "" >> "${TARGET}"/etc/fstab
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do_log "info" "false" "fstab entry generated: 'UUID=${var_device_uuid} ${var_path} ${FILESYSTEM_VERSION} ${MOUNT_OPTIONS},${BTRFS_OPTIONS},subvol=${MOUNT_SUBVOLUME} 0 2'."
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elif [[ ${FILESYSTEM_VERSION} == "ext4" ]]; then
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# shellcheck disable=2129
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echo "# ${var_path} was on ${MAP_MOUNTPATH_DEV[${var_path}]} during installation" >> "${TARGET}"/etc/fstab
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echo "# ${var_path} was on ${var_device_uuid} during installation" >> "${TARGET}"/etc/fstab
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echo "UUID=${var_device_uuid} ${var_path} ${FILESYSTEM_VERSION} ${MOUNT_OPTIONS} 0 2" >> "${TARGET}"/etc/fstab
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echo "" >> "${TARGET}"/etc/fstab
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do_log "info" "false" "fstab entry generated: 'UUID=${var_device_uuid} ${var_path} ${FILESYSTEM_VERSION} ${MOUNT_OPTIONS} 0 2'."
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else
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do_log "error" "false" "fstab entry - no valid filesystem: '${FILESYSTEM_VERSION}' found for '${var_path}'."
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||||
fi
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done
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# TODO: flexible entries for more than one CD-ROM drives.
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# Add entry for CD-ROM device
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||||
# shellcheck disable=2129
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echo "# /media/cdrom0 was on /dev/sr0 during installation" >> "${TARGET}"/etc/fstab
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||||
echo "/dev/sr0 /media/cdrom0 udf,iso9660 user,noauto 0 0" >> "${TARGET}"/etc/fstab
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||||
echo "" >> "${TARGET}"/etc/fstab
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do_log "info" "false" "fstab entry generated: '/dev/sr0 /media/cdrom0 udf,iso9660 user,noauto 0 0'."
|
||||
|
||||
# Add entry for proc and tmpfs device
|
||||
# shellcheck disable=2129
|
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echo "##### Added by CISS.2025.debian.installer" >> "${TARGET}"/etc/fstab
|
||||
echo "proc /proc proc nodev,nosuid,noexec,hidepid=2 0 0" >> "${TARGET}"/etc/fstab
|
||||
echo "tmpfs /dev/shm tmpfs rw,nodev,nosuid,noexec,relatime,size=1G 0 0" >> "${TARGET}"/etc/fstab
|
||||
echo "" >> "${TARGET}"/etc/fstab
|
||||
do_log "info" "false" "fstab entry generated: 'proc /proc proc nodev,nosuid,noexec,hidepid=2 0 0'."
|
||||
do_log "info" "false" "fstab entry generated: 'tmpfs /dev/shm tmpfs rw,nodev,nosuid,noexec,relatime,size=1G 0 0'."
|
||||
|
||||
# TODO: flexible 'SWAP' entry, not only ephemeral SWAP.
|
||||
# Add entry for SWAP device
|
||||
declare MOUNT_PATH="SWAP"
|
||||
# shellcheck disable=2129
|
||||
echo "##### Added by CISS.2025.debian.installer" >> "${TARGET}"/etc/fstab
|
||||
echo "${MAP_EPHEMERAL_ENCLABEL["${MOUNT_PATH}"]} none swap defaults 0 0" >> "${TARGET}"/etc/fstab
|
||||
echo "" >> "${TARGET}"/etc/fstab
|
||||
do_log "info" "false" "fstab entry generated: '${MAP_EPHEMERAL_ENCLABEL["${MOUNT_PATH}"]} none swap defaults 0 0'."
|
||||
|
||||
# TODO: flexible '/tmp' entry, not only ephemeral SWAP.
|
||||
# Add entry for '/tmp' device
|
||||
declare MOUNT_PATH="/tmp"
|
||||
# shellcheck disable=2129
|
||||
echo "##### Added by CISS.2025.debian.installer" >> "${TARGET}"/etc/fstab
|
||||
echo "${MAP_EPHEMERAL_ENCLABEL["${MOUNT_PATH}"]} /tmp ext4 defaults,rw,nodev,nosuid,relatime 0 0" >> "${TARGET}"/etc/fstab
|
||||
echo "" >> "${TARGET}"/etc/fstab
|
||||
do_log "info" "false" "fstab entry generated: '${MAP_EPHEMERAL_ENCLABEL["${MOUNT_PATH}"]} /tmp ext4 defaults,rw,nodev,nosuid,relatime 0 0'."
|
||||
|
||||
do_show_footer "${MODULE_TXT}"
|
||||
}
|
||||
# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh:
|
||||
Reference in New Issue
Block a user