107 lines
3.4 KiB
Nix
107 lines
3.4 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
cfg = config.boot.initrd.clevis;
|
|
systemd = config.boot.initrd.systemd;
|
|
supportedFs = [ "zfs" "bcachefs" ];
|
|
in
|
|
{
|
|
meta.maintainers = with maintainers; [ julienmalka camillemndn ];
|
|
meta.doc = ./clevis.md;
|
|
|
|
options = {
|
|
boot.initrd.clevis.enable = mkEnableOption (lib.mdDoc "Clevis in initrd");
|
|
|
|
|
|
boot.initrd.clevis.package = mkOption {
|
|
type = types.package;
|
|
default = pkgs.clevis;
|
|
defaultText = "pkgs.clevis";
|
|
description = lib.mdDoc "Clevis package";
|
|
};
|
|
|
|
boot.initrd.clevis.devices = mkOption {
|
|
description = "Encrypted devices that need to be unlocked at boot using Clevis";
|
|
default = { };
|
|
type = types.attrsOf (types.submodule ({
|
|
options.secretFile = mkOption {
|
|
description = lib.mdDoc "Clevis JWE file used to decrypt the device at boot, in concert with the chosen pin (one of TPM2, Tang server, or SSS).";
|
|
type = types.path;
|
|
};
|
|
}));
|
|
};
|
|
|
|
boot.initrd.clevis.useTang = mkOption {
|
|
description = "Whether the Clevis JWE file used to decrypt the devices uses a Tang server as a pin.";
|
|
default = false;
|
|
type = types.bool;
|
|
};
|
|
|
|
};
|
|
|
|
config = mkIf cfg.enable {
|
|
|
|
# Implementation of clevis unlocking for the supported filesystems are located directly in the respective modules.
|
|
|
|
|
|
assertions = (attrValues (mapAttrs
|
|
(device: _: {
|
|
assertion = (any (fs: fs.device == device && (elem fs.fsType supportedFs)) config.system.build.fileSystems) || (hasAttr device config.boot.initrd.luks.devices);
|
|
message = ''
|
|
No filesystem or LUKS device with the name ${device} is declared in your configuration.'';
|
|
})
|
|
cfg.devices));
|
|
|
|
|
|
warnings =
|
|
if cfg.useTang && !config.boot.initrd.network.enable && !config.boot.initrd.systemd.network.enable
|
|
then [ "In order to use a Tang pinned secret you must configure networking in initrd" ]
|
|
else [ ];
|
|
|
|
boot.initrd = {
|
|
extraUtilsCommands = mkIf (!systemd.enable) ''
|
|
copy_bin_and_libs ${pkgs.jose}/bin/jose
|
|
copy_bin_and_libs ${pkgs.curl}/bin/curl
|
|
copy_bin_and_libs ${pkgs.bash}/bin/bash
|
|
|
|
copy_bin_and_libs ${pkgs.tpm2-tools}/bin/.tpm2-wrapped
|
|
mv $out/bin/{.tpm2-wrapped,tpm2}
|
|
cp {${pkgs.tpm2-tss},$out}/lib/libtss2-tcti-device.so.0
|
|
|
|
copy_bin_and_libs ${cfg.package}/bin/.clevis-wrapped
|
|
mv $out/bin/{.clevis-wrapped,clevis}
|
|
|
|
for BIN in ${cfg.package}/bin/clevis-decrypt*; do
|
|
copy_bin_and_libs $BIN
|
|
done
|
|
|
|
for BIN in $out/bin/clevis{,-decrypt{,-null,-tang,-tpm2}}; do
|
|
sed -i $BIN -e 's,${pkgs.bash},,' -e 's,${pkgs.coreutils},,'
|
|
done
|
|
|
|
sed -i $out/bin/clevis-decrypt-tpm2 -e 's,tpm2_,tpm2 ,'
|
|
'';
|
|
|
|
secrets = lib.mapAttrs' (name: value: nameValuePair "/etc/clevis/${name}.jwe" value.secretFile) cfg.devices;
|
|
|
|
systemd = {
|
|
extraBin = mkIf systemd.enable {
|
|
clevis = "${cfg.package}/bin/clevis";
|
|
curl = "${pkgs.curl}/bin/curl";
|
|
};
|
|
|
|
storePaths = mkIf systemd.enable [
|
|
cfg.package
|
|
"${pkgs.jose}/bin/jose"
|
|
"${pkgs.curl}/bin/curl"
|
|
"${pkgs.tpm2-tools}/bin/tpm2_createprimary"
|
|
"${pkgs.tpm2-tools}/bin/tpm2_flushcontext"
|
|
"${pkgs.tpm2-tools}/bin/tpm2_load"
|
|
"${pkgs.tpm2-tools}/bin/tpm2_unseal"
|
|
];
|
|
};
|
|
};
|
|
};
|
|
}
|