import ./make-test-python.nix ({ lib, pkgs, ... }: { name = "systemd-initrd-luks-tpm2"; nodes.machine = { pkgs, ... }: { # Use systemd-boot virtualisation = { emptyDiskImages = [ 512 ]; useBootLoader = true; # Booting off the TPM2-encrypted device requires an available init script mountHostNixStore = true; useEFIBoot = true; qemu.options = ["-chardev socket,id=chrtpm,path=/tmp/mytpm1/swtpm-sock -tpmdev emulator,id=tpm0,chardev=chrtpm -device tpm-tis,tpmdev=tpm0"]; }; boot.loader.systemd-boot.enable = true; boot.initrd.availableKernelModules = [ "tpm_tis" ]; environment.systemPackages = with pkgs; [ cryptsetup ]; boot.initrd.systemd = { enable = true; }; specialisation.boot-luks.configuration = { boot.initrd.luks.devices = lib.mkVMOverride { cryptroot = { device = "/dev/vdb"; crypttabExtraOpts = [ "tpm2-device=auto" ]; }; }; virtualisation.rootDevice = "/dev/mapper/cryptroot"; virtualisation.fileSystems."/".autoFormat = true; }; }; testScript = '' import subprocess import os import time class Tpm: def __init__(self): os.mkdir("/tmp/mytpm1") self.start() def start(self): self.proc = subprocess.Popen(["${pkgs.swtpm}/bin/swtpm", "socket", "--tpmstate", "dir=/tmp/mytpm1", "--ctrl", "type=unixio,path=/tmp/mytpm1/swtpm-sock", "--log", "level=20", "--tpm2"]) def wait_for_death_then_restart(self): while self.proc.poll() is None: print("waiting for tpm to die") time.sleep(1) assert self.proc.returncode == 0 self.start() tpm = Tpm() # Create encrypted volume machine.wait_for_unit("multi-user.target") machine.succeed("echo -n supersecret | cryptsetup luksFormat -q --iter-time=1 /dev/vdb -") machine.succeed("PASSWORD=supersecret SYSTEMD_LOG_LEVEL=debug systemd-cryptenroll --tpm2-pcrs= --tpm2-device=auto /dev/vdb |& systemd-cat") # Boot from the encrypted disk machine.succeed("bootctl set-default nixos-generation-1-specialisation-boot-luks.conf") machine.succeed("sync") machine.crash() tpm.wait_for_death_then_restart() # Boot and decrypt the disk machine.wait_for_unit("multi-user.target") assert "/dev/mapper/cryptroot on / type ext4" in machine.succeed("mount") ''; })