1 files changed, 118 insertions, 0 deletions
diff --git a/modules/nixosModules/nfs.nix b/modules/nixosModules/nfs.nix
new file mode 100644
index 0000000..3f53cc6
--- /dev/null
+++ b/modules/nixosModules/nfs.nix
@@ -0,0 +1,118 @@
+{inputs, ...}: {
+  flake.nixosModules.nfs = {
+    config,
+    lib,
+    ...
+  }:
+    with lib; let
+      cfg = config.nfs;
+    in {
+      options = {
+        nfs.server = mkOption {
+          description = ''
+            NFS server configuration.
+          '';
+          default = {enable = false;};
+          type = types.submodule {
+            options = {
+              enable = mkEnableOption "Enable nfs server";
+              exportsPath = mkOption {
+                type = types.str;
+                default = "/export";
+                description = ''
+                  A path to the dir, where exports will be binded.
+                '';
+              };
+
+              defaultExportIps = mkOption {
+                type = types.listOf (types.str);
+                description = ''
+                  A list of ip addresses, that will be used as default in exportDirs
+                '';
+              };
+
+              defaultExportParams = mkOption {
+                type = types.str;
+                default = "rw,nohide,insecure,no_subtree_check";
+                description = ''
+                  Params, that will be used as default in exportDirs
+                '';
+              };
+
+              exportDirs = mkOption {
+                description = ''
+                  A list of directories to export.
+                '';
+                type = types.listOf (types.submodule {
+                  options = {
+                    path = mkOption {
+                      type = types.str;
+                      description = ''
+                        A path to the directory to export.
+                      '';
+                    };
+                    exportPath = mkOption {
+                      type = types.str;
+                      default = "";
+                      description = ''
+                        A path that will be binded to the export directory in the exportsPath.
+                      '';
+                    };
+                    ips = mkOption {
+                      type = types.listOf (types.str);
+                      default = cfg.server.defaultExportIps;
+                      description = ''
+                        A list of ip addresses to export the dir to.
+                      '';
+                    };
+                    params = mkOption {
+                      type = types.str;
+                      default = cfg.server.defaultExportParams;
+                      description = ''
+                        Params for the ip addresses.
+                      '';
+                    };
+                  };
+                });
+              };
+            };
+          };
+        };
+      };
+
+      config = mkIf cfg.server.enable {
+        services.nfs.server = {
+          enable = true;
+          exports =
+            "${cfg.server.exportsPath} ${concatMapStrings (ip: "${ip}(rw,fsid=0,no_subtree_check) ") cfg.server.defaultExportIps}\n"
+            + concatMapStrings
+            (dir: let
+              ips = concatMapStrings (ip: "${ip}(${dir.params}) ") dir.ips;
+              exportPath =
+                if dir.exportPath != ""
+                then dir.exportPath
+                else baseNameOf dir.path;
+            in "${cfg.server.exportsPath}/${exportPath} ${ips}\n")
+            cfg.server.exportDirs;
+        };
+
+        systemd.tmpfiles.rules = [
+          "d ${cfg.server.exportsPath} 0744 nobody nogroup"
+        ];
+
+        fileSystems = listToAttrs (map (exportDir: let
+          exportPath =
+            if exportDir.exportPath != ""
+            then exportDir.exportPath
+            else baseNameOf exportDir.path;
+          fullExportPath = "${cfg.server.exportsPath}/${exportPath}";
+        in {
+          name = fullExportPath;
+          value = {
+            device = exportDir.path;
+            options = ["bind"];
+          };
+        }) cfg.server.exportDirs);
+      };
+    };
+}