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import ./make-test-python.nix ({ lib, pkgs, ... }: {
name = "systemd-initrd-luks-tpm2";
nodes.machine = { pkgs, ... }: {
# Use systemd-boot
virtualisation = {
emptyDiskImages = [ 512 ];
useBootLoader = 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";
};
};
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")
'';
})
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