mirror of
https://codeberg.org/privacy1st/arch
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105 lines
3.2 KiB
Bash
105 lines
3.2 KiB
Bash
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#
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# lsblk
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#
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# -d, --nodeps Do not print holder devices or slaves.
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# -p, --paths Print full device paths.
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# -l, --list Produce output in the form of a list.
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# -n, --noheadings
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# -x, --sort column
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function get_partitions(){
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# $1 block-device
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# return: the following variables:
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# PARTITIONS (array with one partition per entry)
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# Remove first line of output (which is just the block device $1 itself)
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# with sed: sed 1d
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PARTITIONS="$(lsblk -pln -o name "$1" | sed 1d)" || return $?
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newline_separated_to_array
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}
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function get_block_devices() {
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# return: the following variables:
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# BLOCK_DEVICES (array with one entry for each block device)
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# Get list of devices, one per line
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BLOCK_DEVICES="$(lsblk -dplnx size -o name | grep -Ev "boot|rpmb|loop" | tac)" || return $?
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newline_separated_to_array BLOCK_DEVICES BLOCK_DEVICES || return $?
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}
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function get_block_devices_with_size() {
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# return: the following variables:
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# BLOCK_DEVICE_SIZES (array with two entries for each block device: device path and device size)
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# Get list of devices and their sizes, one pair per line
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# Use sed to remove multiple white spaces: sed 's|\s\s*| |'
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BLOCK_DEVICE_SIZES="$(lsblk -dplnx size -o name,size | grep -Ev "boot|rpmb|loop" | sed 's|\s\s*| |' | tac)" || return $?
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newline_to_space BLOCK_DEVICE_SIZES || return $?
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space_separated_to_array BLOCK_DEVICE_SIZES BLOCK_DEVICE_SIZES || return $?
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}
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function partition() {
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# $1: target block device
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# $2: uefi or bios
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if [ "$#" -ne 2 ]; then
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echo "partition requires two args!";
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return 1
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fi
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for i in "$@"; do
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if [ -z "$i" ]; then
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echo "partition: all given args must not be empty";
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return 1;
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fi
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done
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# if BOOT_PART_SIZE not given, set to default value
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"${BOOT_PART_SIZE:='261'}"
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# if too small, print warning and exit
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if [ "${BOOT_PART_SIZE}" -lt "261" ]; then
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echo "BOOT_PART_SIZE should be larger than 260!";
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return 1;
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fi
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# As our data partition is encrypted,
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# we need a separate boot partition!
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case "$2" in
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uefi)
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# EFI boot partition
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#
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# Create a partition with fat32 as the file system type and set the
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# esp flag on it.
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parted --script "$1" -- mklabel gpt \
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mkpart ESP fat32 2Mib "${BOOT_PART_SIZE}MiB" \
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set 1 esp on \
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mkpart primary "${BOOT_PART_SIZE}MiB" 100% || return $?
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get_partitions "$1" || return $?
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BOOT_PART="${PARTITIONS[0]}"
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LUKS_PART="${PARTITIONS[1]}"
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;;
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bios)
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# > On a BIOS/GPT configuration, a BIOS boot partition is required. GRUB embeds its `core.img`
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# > into this partition.
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# > For parted set/activate the flag bios_grub on the partition.
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#
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# archwiki -> GRUB#GUID_Partition_Table_(GPT)_specific_instructions
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# https://www.gnu.org/software/grub/manual/grub/html_node/BIOS-installation.html#BIOS-installation
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parted --script "$1" -- mklabel gpt \
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mkpart primary 1MiB 2MiB \
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set 1 bios_grub on \
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mkpart primary 2MiB "${BOOT_PART_SIZE}MiB" \
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mkpart primary "${BOOT_PART_SIZE}MiB" 100% || return $?
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get_partitions "$1" || return $?
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BOOT_PART="${PARTITIONS[2]}"
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LUKS_PART="${PARTITIONS[3]}"
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;;
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*)
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echo "Expected uefi or bios but got $2 instead!"
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return 1
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;;
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esac
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}
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