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-rw-r--r--nixos/modules/security/apparmor.nix68
1 files changed, 68 insertions, 0 deletions
diff --git a/nixos/modules/security/apparmor.nix b/nixos/modules/security/apparmor.nix
new file mode 100644
index 0000000000000..d4aa0598dd3de
--- /dev/null
+++ b/nixos/modules/security/apparmor.nix
@@ -0,0 +1,68 @@
+{pkgs, config, ...}:
+
+let
+  cfg = config.security.apparmor;
+in
+
+with pkgs.lib;
+
+{
+
+  ###### interface
+
+  options = {
+
+    security.apparmor = {
+
+      enable = mkOption {
+        default = false;
+        description = ''
+          Enable AppArmor application security system. Enable only if
+          you want to further improve AppArmor.
+        '';
+      };
+
+      profiles = mkOption {
+        default = [];
+        merge = mergeListOption;
+        description = ''
+          List of file names of AppArmor profiles.
+        '';
+      };
+
+    };
+  };
+
+
+  ###### implementation
+
+  config = mkIf (cfg.enable) {
+
+    assertions = [ { assertion = config.boot.kernelPackages.kernel.features ? apparmor
+                               && config.boot.kernelPackages.kernel.features.apparmor;
+                     message = "AppArmor is enabled, but the kernel doesn't have AppArmor support"; }
+                 ];
+
+    environment.systemPackages = [ pkgs.apparmor ];
+
+    systemd.services.apparmor = {
+      #wantedBy = [ "basic.target" ];
+      wantedBy = [ "local-fs.target" ];
+      path = [ pkgs.apparmor ];
+
+      serviceConfig = {
+        Type = "oneshot";
+        RemainAfterExit = "yes";
+        ExecStart = concatMapStrings (profile:
+          ''${pkgs.apparmor}/sbin/apparmor_parser -rKv -I ${pkgs.apparmor}/etc/apparmor.d/ "${profile}" ; ''
+        ) cfg.profiles;
+        ExecStop = concatMapStrings (profile:
+          ''${pkgs.apparmor}/sbin/apparmor_parser -Rv -I ${pkgs.apparmor}/etc/apparmor.d/ "${profile}" ; ''
+        ) cfg.profiles;
+      };
+
+    };
+
+  };
+
+}