nixos: flesh out the grsecurity test suite

I've failed to figure out what why `paxtest blackhat` hangs the vm, and
have resigned to running individual `paxtest` programs.  This provides
limited coverage, but at least verifies that some important features are
in fact working.

Ideas for future work includes a subtest for basic desktop
functionality.

1 files changed, 31 insertions, 9 deletions

diff --git a/nixos/tests/grsecurity.nix b/nixos/tests/grsecurity.nix
index 14f1aa9ff885..aadbfd8371ff 100644
--- a/nixos/tests/grsecurity.nix
+++ b/nixos/tests/grsecurity.nix
@@ -3,17 +3,39 @@
 import ./make-test.nix ({ pkgs, ...} : {
   name = "grsecurity";
   meta = with pkgs.stdenv.lib.maintainers; {
-    maintainers = [ copumpkin ];
+    maintainers = [ copumpkin joachifm ];
   };
 
   machine = { config, pkgs, ... }:
-    { boot.kernelPackages = pkgs.linuxPackages_grsec_testing_server; };
+    { security.grsecurity.enable = true;
+      boot.kernel.sysctl."kernel.grsecurity.deter_bruteforce" = 0;
+      security.apparmor.enable = true;
+    };
 
-  testScript =
-    ''
-      $machine->succeed("uname -a") =~ /grsec/;
-      # FIXME: this seems to hang the whole test. Unclear why, but let's fix it
-      # $machine->succeed("${pkgs.paxtest}/bin/paxtest blackhat");
-    '';
-})
+  testScript = ''
+    subtest "grsec-lock", sub {
+      $machine->succeed("systemctl is-active grsec-lock");
+      $machine->succeed("grep -Fq 1 /proc/sys/kernel/grsecurity/grsec_lock");
+      $machine->fail("echo -n 0 >/proc/sys/kernel/grsecurity/grsec_lock");
+    };
+
+    subtest "paxtest", sub {
+      # TODO: running paxtest blackhat hangs the vm
+      $machine->succeed("${pkgs.paxtest}/lib/paxtest/anonmap") =~ /Killed/ or die;
+      $machine->succeed("${pkgs.paxtest}/lib/paxtest/execbss") =~ /Killed/ or die;
+      $machine->succeed("${pkgs.paxtest}/lib/paxtest/execdata") =~ /Killed/ or die;
+      $machine->succeed("${pkgs.paxtest}/lib/paxtest/execheap") =~ /Killed/ or die;
+      $machine->succeed("${pkgs.paxtest}/lib/paxtest/execstack") =~ /Killed/ or die;
+      $machine->succeed("${pkgs.paxtest}/lib/paxtest/mprotanon") =~ /Killed/ or die;
+      $machine->succeed("${pkgs.paxtest}/lib/paxtest/mprotbss") =~ /Killed/ or die;
+      $machine->succeed("${pkgs.paxtest}/lib/paxtest/mprotdata") =~ /Killed/ or die;
+      $machine->succeed("${pkgs.paxtest}/lib/paxtest/mprotheap") =~ /Killed/ or die;
+      $machine->succeed("${pkgs.paxtest}/lib/paxtest/mprotstack") =~ /Killed/ or die;
+    };
 
+    subtest "tcc", sub {
+      $machine->execute("echo -e '#include <stdio.h>\nint main(void) { puts(\"hello\"); return 0; }' >main.c");
+      $machine->succeed("${pkgs.tinycc.bin}/bin/tcc -run main.c");
+    };
+  '';
+})