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nixfiles/hosts/palladium/backup-scripts.nix

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{ pkgs, ... }:
let
cb-mount = pkgs.writeScriptBin "cb-mount" ''
#!${pkgs.bash}/bin/bash
DEVICE=/dev/disk/by-path/pci-0000:00:12.0-ata-2-part1
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${pkgs.cryptsetup}/bin/cryptsetup luksOpen ''${DEVICE} external-drive
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mkdir -p /mnt/external-drive
mount /dev/mapper/external-drive /mnt/external-drive
'';
cb-unmount = pkgs.writeScriptBin "cb-unmount" ''
#!${pkgs.bash}/bin/bash
umount /mnt/external-drive
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${pkgs.cryptsetup}/bin/cryptsetup luksClose external-drive
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'';
cb-prepare = pkgs.writeScriptBin "cb-prepare" ''
echo "Formatting disk"
sgdisk -Z /dev/disk/by-path/pci-0000:00:12.0-ata-2
sgdisk -N 1 /dev/disk/by-path/pci-0000:00:12.0-ata-2
partprobe /dev/disk/by-path/pci-0000:00:12.0-ata-2
echo "Creating encrypted partition"
${pkgs.cryptsetup}/bin/cryptsetup luksFormat -c aes-xts-plain64 --hash=sha256 -s 256 /dev/disk/by-path/pci-0000:00:12.0-ata-2-part1
echo "Opening encrypted partition"
${pkgs.cryptsetup}/bin/cryptsetup luksOpen /dev/disk/by-path/pci-0000:00:12.0-ata-2-part1 external-drive
echo "Creating file system"
mkfs.ext4 /dev/mapper/external-drive
echo "Closing encrypted partition"
${pkgs.cryptsetup}/bin/cryptsetup luksClose external-drive
'';
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in {
environment.systemPackages = [ cb-mount cb-unmount cb-prepare ];
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}