msw/CISS.debian.installer
SHA256
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
bd5d8836c8eefadc6efdbf37d9cf195ccf97df9dce67348b621e5868eecaf700
CISS.debian.installer/func/4040_generate_fstab.sh
Marc S. Weidner 81bcb407fd
All checks were successful
🛡️ Shell Script Linting / 🛡️ Shell Script Linting (push) Successful in 1m55s
Details
V8.00.000.2025.06.17 
Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
2025-07-16 23:25:32 +02:00

216 lines
8.9 KiB
Bash
Raw Blame History

#!/bin/bash
# SPDX-Version: 3.0
# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-FileType: SOURCE
# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
# SPDX-PackageName: CISS.debian.installer
# SPDX-Security-Contact: security@coresecret.eu
guard_sourcing
#######################################
# '/etc/fstab' entry writer and logger.
# Globals:
# TARGET
# Arguments:
# 1: UUID
# 2: Mount Path
# 3: Filesystem
# 4: Mount Options
# 5: Pass value, while Dump value is hardcoded always "0", e.g., "1"
# Returns:
# 0: on success
#######################################
write_fstab() {
declare _uuid="$1" _path="$2" _fs="$3" _opts="$4" _pass="$5"
printf "UUID=%s %s %s %s 0 %s\n" "${_uuid}" "${_path}" "${_fs}" "${_opts}" "${_pass}" >> "${TARGET}/etc/fstab"
do_log "info" "true" "fstab entry generated: 'UUID=${_uuid} ${_path} ${_fs} ${_opts} 0 ${_pass}'."
return 0
}
#######################################
# Generate target '/etc/fstab' entries.
# Globals:
# HMP_EPHEMERAL_ENCLABEL
# HMP_PATH_FSUUID
# MAP_MOUNTPATH_DEV
# TARGET
# VAR_RECIPE_STRING
# VAR_SETUP_PART
# Arguments:
# None
# Returns:
# 0: on success
#######################################
generate_fstab() {
### Generate '${TARGET}/etc/fstab' header.
: >| "${TARGET}/etc/fstab"
chmod 0600 "${TARGET}/etc/fstab"
cat << 'EOF' >> "${TARGET}/etc/fstab"
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# systemd generates mount units based on this file, see systemd.mount(5).
# Please run 'systemctl daemon-reload' after making changes here.
#
# <file system> <mount point> <type> <options> <dump> <pass>
# Secure tmpfs mounts for a hardened system
# Mount the proc filesystem to provide process and kernel information
proc /proc proc nodev,nosuid,noexec,hidepid=2 0 0
# Mount sysfs to expose kernel device information to user space
sysfs /sys sysfs defaults 0 0
# Mount the devpts filesystem to enable pseudo-terminal support for user sessions
devpts /dev/pts devpts gid=5,mode=620 0 0
# Restrict /dev/shm to shared memory, limit size, prevent code execution
tmpfs /dev/shm tmpfs rw,nodev,noexec,nosuid,relatime,size=1G 0 0
# System runtime directory in RAM; do not set noexec here for compatibility
tmpfs /run tmpfs mode=0755,nodev,nosuid 0 0
EOF
### Generate '${TARGET}/etc/fstab' special entries '/' '/boot' '/boot/efi'.
### Define the order of the special paths.
declare -a ary_path_order; ary_path_order=("/" "/boot" "/boot/efi")
declare -a ary_skip=("/" "/boot" "/boot/efi" "/recovery")
declare var_path var_entry var_part var_dev var_key var_uuid var_fs_btrfs_compress var_fs_btrfs_level var_fs_btrfs_subvolume \
var_fs_version var_mount_options var_mount_optsnap var_btrfs_compression
for var_path in "${ary_path_order[@]}"; do
var_entry=$(yq e -r '.recipe.*.dev.* | select(.mount.path == "'"${var_path}"'")' "${VAR_SETUP_PART}")
if [[ -z "${var_entry}" ]]; then
continue
fi
var_part=$(echo "${var_entry}" | yq e 'path | .[-2]' -)
var_dev=$(echo "${var_entry}" | yq e 'path | .[-3]' -)
var_key="UUID_${var_path}"
var_uuid="${HMP_PATH_FSUUID[${var_key}]}"
var_fs_btrfs_compress=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.compress" "${VAR_SETUP_PART}")
var_fs_btrfs_level=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.level" "${VAR_SETUP_PART}")
var_fs_btrfs_subvolume=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.subvolume" "${VAR_SETUP_PART}")
var_fs_version=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.version" "${VAR_SETUP_PART}")
var_mount_options=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.options" "${VAR_SETUP_PART}")
var_mount_optsnap=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.optsnap" "${VAR_SETUP_PART}")
if [[ "${var_fs_version,,}" == btrfs ]]; then
if [[ "${var_fs_btrfs_level:-0}" == 0 ]]; then
var_btrfs_compression="compress=no"
else
var_btrfs_compression="compress=${var_fs_btrfs_compress}:${var_fs_btrfs_level}"
fi
write_fstab "${var_uuid}" "${var_path}" "${var_fs_version}" "${var_mount_options},${var_btrfs_compression}" "1"
if [[ -n "${var_fs_btrfs_subvolume}" ]]; then
if [[ "${var_path}" == "/" ]]; then
write_fstab "${var_uuid}" "/.snapshots" "${var_fs_version}" "${var_mount_optsnap}" "0"
else
write_fstab "${var_uuid}" "${var_path}/.snapshots" "${var_fs_version}" "${var_mount_optsnap}" "0"
fi
fi
continue
elif [[ "${var_fs_version,,}" == ext4 ]]; then
write_fstab "${var_uuid}" "${var_path}" "${var_fs_version}" "${var_mount_options}" "1"
continue
elif [[ "${var_fs_version,,}" == fat32 ]]; then
write_fstab "${var_uuid}" "${var_path}" "vfat" "${var_mount_options}" "2"
continue
fi
done
### Generate '${TARGET}/etc/fstab' remaining entries.
for var_path in "${!MAP_MOUNTPATH_DEV[@]}"; do
if validation_array "${var_path}" "${ary_skip[@]}"; then
continue
fi
var_entry=$(yq e -r '.recipe.*.dev.* | select(.mount.path == "'"${var_path}"'")' "${VAR_SETUP_PART}")
if [[ -z "${var_entry}" ]]; then
continue
fi
var_part=$(echo "${var_entry}" | yq e 'path | .[-2]' -)
var_dev=$(echo "${var_entry}" | yq e 'path | .[-3]' -)
var_key="UUID_${var_path}"
var_uuid="${HMP_PATH_FSUUID[${var_key}]}"
var_fs_btrfs_compress=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.compress" "${VAR_SETUP_PART}")
var_fs_btrfs_level=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.level" "${VAR_SETUP_PART}")
var_fs_btrfs_subvolume=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.subvolume" "${VAR_SETUP_PART}")
var_fs_version=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.version" "${VAR_SETUP_PART}")
var_mount_options=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.options" "${VAR_SETUP_PART}")
var_mount_optsnap=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.optsnap" "${VAR_SETUP_PART}")
if [[ "${var_fs_version,,}" == btrfs ]]; then
if [[ "${var_fs_btrfs_level:-0}" == 0 ]]; then
var_btrfs_compression="compress=no"
else
var_btrfs_compression="compress=${var_fs_btrfs_compress}:${var_fs_btrfs_level}"
fi
write_fstab "${var_uuid}" "${var_path}" "${var_fs_version}" "${var_mount_options},${var_btrfs_compression}" "2"
if [[ -n "${var_fs_btrfs_subvolume}" ]]; then
write_fstab "${var_uuid}" "${var_path}/.snapshots" "${var_fs_version}" "${var_mount_optsnap}" "0"
fi
continue
elif [[ "${var_fs_version,,}" == ext4 ]]; then
write_fstab "${var_uuid}" "${var_path}" "${var_fs_version}" "${var_mount_options}" "2"
continue
elif [[ "${var_fs_version,,}" == fat32 ]]; then
write_fstab "${var_uuid}" "${var_path}" "vfat" "${var_mount_options}" "2"
continue
fi
done
cat << 'EOF' >> "${TARGET}/etc/fstab"
/dev/sr0 /media/cdrom0 udf,iso9660 user,noauto 0 0
EOF
do_log "info" "true" "fstab entry generated: '/dev/sr0 /media/cdrom0 udf,iso9660 user,noauto 0 0'."
### Add entry for 'SWAP' device.
var_path="SWAP"
write_fstab "/dev/mapper/${HMP_EPHEMERAL_ENCLABEL["${var_path}"]}" "none" "swap" "defaults" "0"
### Add entry for '/tmp' device.
var_path="/tmp"
write_fstab "/dev/mapper/${HMP_EPHEMERAL_ENCLABEL["${var_path}"]}" "/tmp" "ext4" "defaults,rw,nodev,nosuid,relatime" "0"
return 0
}
# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
Reference in New Issue View Git Blame Copy Permalink