1 files changed, 25 insertions, 0 deletions
diff --git a/nixos/tests/sysctl.nix b/nixos/tests/sysctl.nix
new file mode 100644
index 000000000000..d7220cabb22c
--- /dev/null
+++ b/nixos/tests/sysctl.nix
@@ -0,0 +1,25 @@
+import ./make-test.nix ({ pkgs, ...} : {
+  name = "sysctl";
+  meta = with pkgs.stdenv.lib.maintainers; {
+    maintainers = [ nequissimus ];
+  };
+
+  machine = { config, lib, pkgs, ... }:
+    {
+      boot.kernelPackages = pkgs.linuxPackages;
+      boot.kernel.sysctl = {
+        "kernel.dmesg_restrict" = true; # Restrict dmesg access
+        "net.core.bpf_jit_enable" = false; # Turn off bpf JIT
+        "user.max_user_namespaces" = 0; # Disable user namespaces
+        "vm.swappiness" = 2; # Low swap usage
+      };
+    };
+
+  testScript =
+    ''
+      $machine->succeed("sysctl kernel.dmesg_restrict | grep 'kernel.dmesg_restrict = 1'");
+      $machine->succeed("sysctl net.core.bpf_jit_enable | grep 'net.core.bpf_jit_enable = 0'");
+      $machine->succeed("sysctl user.max_user_namespaces | grep 'user.max_user_namespaces = 0'");
+      $machine->succeed("sysctl vm.swappiness | grep 'vm.swappiness = 2'");
+    '';
+})