linux-image-manager/scripts/image/base.sh

118 lines
4.2 KiB
Bash

#!/bin/bash
#
# Offers base functions for the image management
#
# shellcheck disable=SC2034 #Deactivate checking of unused variables
# shellcheck disable=SC2010 # ls | grep allowed
# shellcheck source=/dev/null # Deactivate SC1090
# shellcheck disable=SC2015 # Deactivate bools hints
# shellcheck disable=SC2154 # Deactivate referenced but not assigned hints
source "$(dirname "$(readlink -f "${0}")")/../base.sh" || (echo "Loading base.sh failed." && exit 1)
# Writes the full partition name
# @parameter $1 is device path
# @parameter $2 is the partition number
echo_partition_name(){
if [ "${device_path:5:1}" != "s" ]
then
echo "$device_path""p""$1"
else
echo "$device_path$1"
fi
}
set_partition_paths(){
info "Setting partition and mapper paths..."
boot_partition_path=$(echo_partition_name "1")
root_partition_path=$(echo_partition_name "2")
root_mapper_path=$root_partition_path
}
make_mount_folders(){
info "Preparing mount paths..." &&
boot_mount_path="$working_folder_path""boot/" &&
root_mount_path="$working_folder_path""root/" &&
mkdir -v "$boot_mount_path" &&
mkdir -v "$root_mount_path" ||
error
}
make_working_folder(){
working_folder_path="/tmp/raspberry-pi-tools-$(date +%s)/" &&
info "Create temporary working folder in $working_folder_path" &&
mkdir -v "$working_folder_path" ||
error
}
set_root_variables(){
info "Setting root variables..." &&
root_partition_uuid=$(blkid "$root_partition_path" -s UUID -o value) &&
root_mapper_name="arch-root-$root_partition_uuid" &&
root_mapper_path="/dev/mapper/$root_mapper_name" || error
}
decrypt_root(){
if [ "$(blkid "$root_partition_path" -s TYPE -o value)" == "crypto_LUKS" ]
then
set_root_variables &&
info "Decrypting of $root_partition_path is neccessary..." &&
sudo cryptsetup -v luksOpen "$root_partition_path" "$root_mapper_name" ||
error
fi
}
mount_partitions(){
info "Mount boot and root partition..." &&
mount -v "$boot_partition_path" "$boot_mount_path" &&
mount -v "$root_mapper_path" "$root_mount_path" &&
info "The following mounts refering this setup exist:" && mount | grep "$working_folder_path" ||
error
}
destructor(){
info "Cleaning up..."
info "Unmounting everything..."
umount -lv "$chroot_dev_pts_mount_path" || warning "Umounting $chroot_dev_pts_mount_path failed!"
umount -lv "$chroot_dev_mount_path" || warning "Umounting $chroot_dev_mount_path failed!"
umount -v "$chroot_proc_mount_path" || warning "Umounting $chroot_proc_mount_path failed!"
umount -v "$chroot_sys_mount_path" || warning "Umounting $chroot_sys_mount_path failed!"
umount -v "$root_mount_path""boot/" || warning "Umounting $root_mount_path""boot/ failed!"
umount -v "$root_mount_path" || warning "Umounting $root_mount_path failed!"
umount -v "$boot_mount_path" || warning "Umounting $boot_mount_path failed!"
info "Deleting mount folders..."
rmdir -v "$root_mount_path" || warning "Removing $root_mount_path failed!"
rmdir -v "$boot_mount_path" || warning "Removing $boot_mount_path failed!"
rmdir -v "$working_folder_path" || warning "Removing $working_folder_path failed!"
if [ "$(blkid "$root_partition_path" -s TYPE -o value)" == "crypto_LUKS" ]
then
info "Trying to close decrypted $root_mapper_name..." &&
sudo cryptsetup -v luksClose "$root_mapper_name" || warning "Failed."
fi
}
mount_chroot_binds(){
info "Mount chroot environments..." &&
chroot_sys_mount_path="$root_mount_path""sys/" &&
chroot_proc_mount_path="$root_mount_path""proc/" &&
chroot_dev_mount_path="$root_mount_path""dev/" &&
chroot_dev_pts_mount_path="$root_mount_path""dev/pts" &&
mount --bind "$boot_mount_path" "$root_mount_path""boot" &&
mount --bind /dev "$chroot_dev_mount_path" &&
mount --bind /sys "$chroot_sys_mount_path" &&
mount --bind /proc "$chroot_proc_mount_path" &&
mount --bind /dev/pts "$chroot_dev_pts_mount_path" ||
error
}
copy_qemu(){
info "Copy qemu binary..." &&
cp -v /usr/bin/qemu-arm-static "$root_mount_path""usr/bin/" ||
error
}
copy_resolve_conf(){
info "Copy resolve.conf..." &&
cp --remove-destination -v /etc/resolv.conf "$root_mount_path""etc/" ||
warning "Failed. Propably there is no internet connection available."
}