stockholm/lass/5pkgs/init/default.nix
2020-01-11 21:02:26 +01:00

127 lines
2.7 KiB
Nix

{ pkgs, lib, vgname ? "vgname", luksmap ? "luksmap", ... }:
with lib;
pkgs.writeScript "init" ''
#!/usr/bin/env nix-shell
#! nix-shell -i bash -p jq parted libxfs
set -efu
disk=$1
if mount | grep -q "$disk"; then
echo "target device is already mounted, bailout"
exit 2
fi
luksdev="$disk"3
luksmap=/dev/mapper/${luksmap}
vgname=${vgname}
bootdev=/dev/sda2
rootdev=/dev/mapper/${vgname}-root
homedev=/dev/mapper/${vgname}-home
read -p "LUKS Password: " lukspw
#
# partitioning
#
# http://en.wikipedia.org/wiki/GUID_Partition_Table
# undo:
# dd if=/dev/zero bs=512 count=34 of=/dev/sda
# TODO zero last 34 blocks (lsblk -bno SIZE /dev/sda)
if ! test "$(blkid -o value -s PTTYPE "$disk")" = gpt; then
parted -s -a optimal "$disk" \
mklabel gpt \
mkpart no-fs 0 1024KiB \
set 1 bios_grub on \
mkpart ESP fat32 1025KiB 1024MiB set 2 boot on \
mkpart primary 1025MiB 100%
fi
if ! test "$(blkid -o value -s PARTLABEL "$luksdev")" = primary; then
echo zonk2
exit 23
fi
if ! cryptsetup isLuks "$luksdev"; then
# aes xts-plain64
echo -n "$lukspw" | cryptsetup luksFormat "$luksdev" - \
-h sha512 \
--iter-time 5000
fi
if ! test -e "$luksmap"; then
echo "$lukspw" | cryptsetup luksOpen "$luksdev" "$(basename "$luksmap")" -
fi
# cryptsetup close
if ! test "$(blkid -o value -s TYPE "$luksmap")" = LVM2_member; then
pvcreate "$luksmap"
fi
if ! vgdisplay -s "$vgname"; then vgcreate "$vgname" "$luksmap"; fi
lvchange -a y /dev/mapper/"$vgname"
if ! test -e "$rootdev"; then lvcreate -L 7G -n root "$vgname"; fi
if ! test -e "$homedev"; then lvcreate -L 100M -n home "$vgname"; fi
# lvchange -a n "$vgname"
#
# formatting
#
if ! test "$(blkid -o value -s TYPE "$bootdev")" = vfat; then
mkfs.vfat "$bootdev"
fi
if ! test "$(blkid -o value -s TYPE "$rootdev")" = btrfs; then
mkfs.xfs "$rootdev"
fi
if ! test "$(blkid -o value -s TYPE "$homedev")" = btrfs; then
mkfs.xfs "$homedev"
fi
if ! test "$(lsblk -n -o MOUNTPOINT "$rootdev")" = /mnt; then
mount "$rootdev" /mnt
fi
if ! test "$(lsblk -n -o MOUNTPOINT "$bootdev")" = /mnt/boot; then
mkdir -m 0000 -p /mnt/boot
mount "$bootdev" /mnt/boot
fi
if ! test "$(lsblk -n -o MOUNTPOINT "$homedev")" = /mnt/home; then
mkdir -m 0000 -p /mnt/home
mount "$homedev" /mnt/home
fi
# umount -R /mnt
#
# dependencies for stockholm
#
nix-env -iA nixos.git
# TODO: get sentinal file from target_path
mkdir -p /mnt/var/src
touch /mnt/var/src/.populate
#
# print all the infos
#
parted "$disk" print
lsblk "$disk"
echo READY.
''