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