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nixpkgs/nixos/tests/hardened.nix

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Nix

import ./make-test.nix ({ pkgs, ...} : {
name = "hardened";
meta = with pkgs.stdenv.lib.maintainers; {
maintainers = [ joachifm ];
};
machine =
{ config, lib, pkgs, ... }:
with lib;
{ users.users.alice = { isNormalUser = true; extraGroups = [ "proc" ]; };
users.users.sybil = { isNormalUser = true; group = "wheel"; };
imports = [ ../modules/profiles/hardened.nix ];
};
testScript =
''
# Test hidepid
subtest "hidepid", sub {
$machine->succeed("grep -Fq hidepid=2 /proc/mounts");
$machine->succeed("[ `su - sybil -c 'pgrep -c -u root'` = 0 ]");
$machine->succeed("[ `su - alice -c 'pgrep -c -u root'` != 0 ]");
};
# Test kernel module hardening
subtest "lock-modules", sub {
$machine->waitForUnit("multi-user.target");
# note: this better a be module we normally wouldn't load ...
$machine->fail("modprobe dccp");
};
# Test userns
subtest "userns", sub {
$machine->fail("unshare --user");
};
'';
})