From af3f8c75646d75d3bbaaf2faa76684bd91c84db4 Mon Sep 17 00:00:00 2001
From: arunoruto <mirza.arnaut@tu-dortmund.de>
Date: Mon, 14 Oct 2024 04:59:40 +0200
Subject: [PATCH] Add NFS option and enable it for kyuubi

---
 hosts/kyuubi/configuration.nix         |  2 ++
 modules/nixos/services/nas/default.nix |  6 +++---
 modules/nixos/services/nas/nfs.nix     | 24 ++++++++++++++++++++++++
 3 files changed, 29 insertions(+), 3 deletions(-)
 create mode 100644 modules/nixos/services/nas/nfs.nix

diff --git a/hosts/kyuubi/configuration.nix b/hosts/kyuubi/configuration.nix
index 1e2b5c2..34b696e 100644
--- a/hosts/kyuubi/configuration.nix
+++ b/hosts/kyuubi/configuration.nix
@@ -14,6 +14,8 @@ in {
   # Define your hostname.
   networking.hostName = lib.mkForce "kyuubi";
 
+  nfs.enable = true;
+
   # environment.sessionVariables.FLAKE = "/home/${username}/Development/nix";
 
   # Disable Autosuspend for USB Bluetooth dongles
diff --git a/modules/nixos/services/nas/default.nix b/modules/nixos/services/nas/default.nix
index a2a09f1..e8114d7 100644
--- a/modules/nixos/services/nas/default.nix
+++ b/modules/nixos/services/nas/default.nix
@@ -5,13 +5,13 @@
 }: {
   imports = [
     ./drives.nix
+    ./nfs.nix
   ];
 
-  options = {
-    nas.enable = lib.mkEnableOption "NAS utilities and config";
-  };
+  options.nas.enable = lib.mkEnableOption "NAS utilities and config";
 
   config = lib.mkIf config.nas.enable {
     drives.enable = lib.mkDefault true;
+    nfs.enable = lib.mkDefault false;
   };
 }
diff --git a/modules/nixos/services/nas/nfs.nix b/modules/nixos/services/nas/nfs.nix
new file mode 100644
index 0000000..dbc9392
--- /dev/null
+++ b/modules/nixos/services/nas/nfs.nix
@@ -0,0 +1,24 @@
+{
+  config,
+  lib,
+  ...
+}: {
+  options.nfs.enable = lib.mkEnableOption "NFS Settings for Server and Client";
+
+  config = lib.mkIf config.nfs.enable {
+    services.nfs.server = {
+      enable = true;
+      # fixed rpc.statd port; for firewall
+      lockdPort = 4001;
+      mountdPort = 4002;
+      statdPort = 4000;
+      extraNfsdConfig = '''';
+    };
+
+    networking.firewall = {
+      # for NFSv3; view with `rpcinfo -p`
+      allowedTCPPorts = [111 2049 4000 4001 4002 20048];
+      allowedUDPPorts = [111 2049 4000 4001 4002 20048];
+    };
+  };
+}