120 lines
2.1 KiB
Bash
Executable file
120 lines
2.1 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -o errexit
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set -o nounset
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set -o pipefail
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progname="$0"
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warn() {
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local line
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for line in "$@"; do
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echo "$progname: $line" 1>&2
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done
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}
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error() {
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warn "$@"
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exit 1
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}
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args=$(getopt --options r:m:b:l:c: --longoptions=root:,mapping:,boot-label:,main-label:,cryptmain-label: --name "$progname" -- "$@")
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eval set -- "$args"
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root=/mnt
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mapping=main
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bootlbl=BOOT
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mainlbl=main
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cryptmainlbl=cryptmain
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while true; do
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case "$1" in
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(-r | --root)
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root=$2
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shift 2
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;;
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(-m | --mapping)
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mapping=$2
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shift 2
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;;
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(-b | --boot-label)
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bootlbl=${2^^}
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shift 2
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;;
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(-l | --main-label)
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mainlbl=$2
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shift 2
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;;
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(-c | --cryptmain-label)
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cryptmainlbl=$2
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shift 2
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;;
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(--)
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shift
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break
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;;
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esac
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done
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if (( $# < 1 )); then
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error 'an argument specifying the block device is required'
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fi
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if (( $# > 1 )); then
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error 'too many arguments'
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fi
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blkdev=$1
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sfdisk --label gpt --quiet -- "$blkdev" <<EOF
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,512M,U;
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,,L;
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EOF
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parts=()
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json=$(sfdisk --json -- "$blkdev")
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while IFS= read -r k; do
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parts+=("$(jq --argjson k "$k" --raw-output '.partitiontable.partitions[$k].node' <<<"$json")")
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done < <(jq '.partitiontable.partitions | keys[]' <<<"$json")
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bootfs="${parts[0]}"
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mainblkdev="${parts[1]}"
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mkfs.vfat -F 32 -n "$bootlbl" -- "$bootfs" >/dev/null
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while true; do
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read -r -p 'Do you want your main partition to be encrypted [y/N]? ' luks
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case "$luks" in
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([Yy]*)
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while true; do
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read -r -s -p 'Enter password: ' password
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warn ''
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read -r -s -p 'Re-enter password: ' repassword
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warn ''
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if [[ $password == "$repassword" ]]; then
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break
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fi
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done
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cryptsetup luksFormat --batch-mode --label "$cryptmainlbl" "$mainblkdev" <<<"$password"
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cryptsetup open "$mainblkdev" "$mapping" <<<"$password"
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mainfs=/dev/mapper/$mapping
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break
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;;
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('' | [Nn]*)
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mainfs=$mainblkdev
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break
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;;
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(*) warn 'Please answer with yes or no' ;;
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esac
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done
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mkfs.ext4 -q -F -L "$mainlbl" -- "$mainfs"
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mkdir --parents -- "$root"
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mount --options noatime -- "$mainfs" "$root"
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mkdir -- "$root/boot"
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mount -- "$bootfs" "$root/boot"
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