Added brltty udev.rules so it hopefully works more reliably. A few other minor tweaks.
This commit is contained in:
Storm Dragon
198
pi4/build/chroot-image.sh
Executable file
198
pi4/build/chroot-image.sh
Executable file
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#! /bin/bash
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#
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# Copyright 2025, Stormux, <storm_dragon@stormux.org>
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#
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# This is free software; you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free
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# Software Foundation; either version 3, or (at your option) any later
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# version.
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#
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# This software is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this package; see the file COPYING. If not, write to the Free
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# Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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#
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set -euo pipefail
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mountedPoints=()
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loopDev=""
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mountRoot=""
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rootPart=""
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bootPart=""
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imagePath=""
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cleanup() {
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statusCode=$?
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set +e
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if [[ ${#mountedPoints[@]} -gt 0 ]]; then
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for ((index=${#mountedPoints[@]}-1; index>=0; index--)); do
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if mountpoint -q "${mountedPoints[$index]}"; then
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umount "${mountedPoints[$index]}" || true
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fi
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done
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fi
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if [[ -n "${mountRoot}" && -d "${mountRoot}" && "${mountRoot}" != "/mnt" ]]; then
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rmdir "${mountRoot}" 2>/dev/null || true
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fi
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if [[ -n "${loopDev}" ]]; then
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partx -d "${loopDev}" 2>/dev/null || true
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losetup --detach "${loopDev}" 2>/dev/null || true
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fi
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exit "$statusCode"
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}
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trap cleanup EXIT INT TERM
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die() {
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echo "Error: $*" >&2
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exit 1
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}
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help() {
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echo "Usage: $0 <image-file>"
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echo "Mounts a Stormux image, chroots into it, and cleans up on exit."
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exit 0
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}
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require_cmd() {
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command -v "$1" >/dev/null 2>&1 || die "Missing required command: $1"
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}
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if [[ $# -ne 1 ]]; then
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help
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fi
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if [[ "$1" == "-h" || "$1" == "--help" ]]; then
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help
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fi
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imagePath="$(readlink -f "$1" 2>/dev/null || true)"
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if [[ -z "${imagePath}" ]]; then
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die "Unable to resolve image path: $1"
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fi
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if [[ ! -f "${imagePath}" ]]; then
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die "Image file not found: ${imagePath}"
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fi
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if [[ "$(whoami)" != "root" ]]; then
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die "This script must be run as root."
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fi
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if command -v pacman >/dev/null 2>&1; then
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for packageName in arch-install-scripts util-linux; do
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if ! pacman -Q "$packageName" &>/dev/null; then
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die "Please install ${packageName} before continuing."
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fi
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done
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else
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require_cmd arch-chroot
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require_cmd losetup
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require_cmd partx
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require_cmd lsblk
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require_cmd mount
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require_cmd umount
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require_cmd findmnt
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require_cmd mountpoint
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fi
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if [[ "$(uname -m)" == "x86_64" ]]; then
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if command -v pacman >/dev/null 2>&1; then
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if ! pacman -Q qemu-user-static &>/dev/null; then
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die "Please install qemu-user-static and qemu-user-static-binfmt before continuing."
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fi
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if ! pacman -Q qemu-user-static-binfmt &>/dev/null; then
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die "Please install qemu-user-static and qemu-user-static-binfmt before continuing."
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fi
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else
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require_cmd qemu-aarch64-static
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fi
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fi
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require_cmd arch-chroot
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require_cmd losetup
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require_cmd partx
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require_cmd lsblk
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require_cmd mount
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require_cmd umount
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require_cmd findmnt
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require_cmd mountpoint
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baseMountDir="/mnt"
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if [[ ! -d "${baseMountDir}" || ! -w "${baseMountDir}" ]]; then
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die "/mnt is missing or not writable. Please create or fix permissions."
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fi
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if mountpoint -q "${baseMountDir}"; then
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if [[ -t 0 ]]; then
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echo "/mnt is already mounted. Unmount it to continue? [y/N]"
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read -r answerText
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case "${answerText}" in
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y|Y|yes|YES)
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umount "${baseMountDir}" || die "Failed to unmount /mnt"
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;;
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*)
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die "Refusing to proceed while /mnt is mounted."
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;;
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esac
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else
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die "/mnt is already mounted. Refusing to proceed in non-interactive mode."
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fi
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fi
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mountRoot="${baseMountDir}"
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loopDev="$(losetup --find --show --partscan "${imagePath}")"
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partx -u "${loopDev}" >/dev/null 2>&1 || true
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declare -a rootCandidates=()
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declare -a bootCandidates=()
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while read -r deviceName fsType nodeType; do
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if [[ "${nodeType}" != "part" ]]; then
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continue
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fi
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case "${fsType}" in
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ext4|ext3|ext2)
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rootCandidates+=("${deviceName}")
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;;
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vfat|fat|fat32|fat16)
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bootCandidates+=("${deviceName}")
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;;
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esac
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done < <(lsblk -nrpo NAME,FSTYPE,TYPE "${loopDev}")
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if [[ ${#rootCandidates[@]} -gt 0 ]]; then
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rootPart="${rootCandidates[0]}"
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elif [[ -b "${loopDev}p2" ]]; then
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rootPart="${loopDev}p2"
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else
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die "Unable to locate root partition inside ${imagePath}"
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fi
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if [[ ${#bootCandidates[@]} -gt 0 ]]; then
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bootPart="${bootCandidates[0]}"
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elif [[ -b "${loopDev}p1" ]]; then
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bootPart="${loopDev}p1"
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fi
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mount "${rootPart}" "${mountRoot}"
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mountedPoints+=("${mountRoot}")
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if [[ -n "${bootPart}" ]]; then
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mkdir -p "${mountRoot}/boot"
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mount "${bootPart}" "${mountRoot}/boot"
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mountedPoints+=("${mountRoot}/boot")
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fi
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echo "Mounted image at ${mountRoot}. Entering chroot..."
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PS1="(Chroot) [\\u@\\h \\W] \\$ " arch-chroot "${mountRoot}"
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