nixos/services.fwupd: allow adding trusted keys

1 files changed, 15 insertions, 1 deletions

diff --git a/nixos/modules/services/hardware/fwupd.nix b/nixos/modules/services/hardware/fwupd.nix
index 672ecc93454..c28f5c0bbb5 100644
--- a/nixos/modules/services/hardware/fwupd.nix
+++ b/nixos/modules/services/hardware/fwupd.nix
@@ -14,6 +14,11 @@ let
       originalFiles = concatMap (d: map (f: "${d}/${f}") (listFiles "${pkgs.fwupd}/etc/${d}")) copiedDirs;
       mkEtcFile = n: nameValuePair n { source = "${pkgs.fwupd}/etc/${n}"; };
     in listToAttrs (map mkEtcFile originalFiles);
+  extraTrustedKeys =
+    let
+      mkName = p: "pki/fwupd/${baseNameOf (toString p)}";
+      mkEtcFile = p: nameValuePair (mkName p) { source = p; };
+    in listToAttrs (map mkEtcFile cfg.extraTrustedKeys);
 in {
 
   ###### interface
@@ -45,6 +50,15 @@ in {
           Allow blacklisting specific plugins
         '';
       };
+
+      extraTrustedKeys = mkOption {
+        type = types.listOf types.path;
+        default = [];
+        example = literalExample "[ /etc/nixos/fwupd/myfirmware.pem ]";
+        description = ''
+          Installing a public key allows firmware signed with a matching private key to be recognized as trusted, which may require less authentication to install than for untrusted files. By default trusted firmware can be upgraded (but not downgraded) without the user or administrator password. Only very few keys are installed by default.
+        '';
+      };
     };
   };
 
@@ -61,7 +75,7 @@ in {
           BlacklistPlugins=${lib.concatStringsSep ";" cfg.blacklistPlugins}
         '';
       };
-    } // originalEtc;
+    } // originalEtc // extraTrustedKeys;
 
     services.dbus.packages = [ pkgs.fwupd ];