49 lines
1.3 KiB
Nix
49 lines
1.3 KiB
Nix
|
{ config, lib, ... }:
|
||
|
|
|
||
|
|
with lib;
|
||
|
|
|
||
|
|
{
|
||
|
|
meta = {
|
||
|
|
maintainers = [ maintainers.joachifm ];
|
||
|
|
};
|
||
|
|
|
||
|
|
options = {
|
||
|
|
security.lockKernelModules = mkOption {
|
||
|
|
type = types.bool;
|
||
|
|
default = false;
|
||
|
|
description = ''
|
||
|
|
Disable kernel module loading once the system is fully initialised.
|
||
|
|
Module loading is disabled until the next reboot. Problems caused
|
||
|
|
by delayed module loading can be fixed by adding the module(s) in
|
||
|
|
question to <option>boot.kernelModules</option>.
|
||
|
|
'';
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
config = mkIf config.security.lockKernelModules {
|
||
|
|
boot.kernelModules = concatMap (x:
|
||
|
|
if x.device != null
|
||
|
|
then
|
||
|
|
if x.fsType == "vfat"
|
||
|
|
then [ "vfat" "nls-cp437" "nls-iso8859-1" ]
|
||
|
|
else [ x.fsType ]
|
||
|
|
else []) config.system.build.fileSystems;
|
||
|
|
|
||
|
|
systemd.services.disable-kernel-module-loading = rec {
|
||
|
|
description = "Disable kernel module loading";
|
||
|
|
|
||
|
|
wantedBy = [ config.systemd.defaultUnit ];
|
||
|
|
|
||
|
|
after = [ "systemd-udev-settle.service" "firewall.service" "systemd-modules-load.service" ] ++ wantedBy;
|
||
|
|
|
||
|
|
unitConfig.ConditionPathIsReadWrite = "/proc/sys/kernel";
|
||
|
|
|
||
|
|
serviceConfig = {
|
||
|
|
Type = "oneshot";
|
||
|
|
RemainAfterExit = true;
|
||
|
|
ExecStart = "/bin/sh -c 'echo -n 1 >/proc/sys/kernel/modules_disabled'";
|
||
|
|
};
|
||
|
|
};
|
||
|
|
};
|
||
|
|
}
|