diff options
Diffstat (limited to 'nixos/modules/services/hardware/freefall.nix')
-rw-r--r-- | nixos/modules/services/hardware/freefall.nix | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/nixos/modules/services/hardware/freefall.nix b/nixos/modules/services/hardware/freefall.nix new file mode 100644 index 00000000000..3f7b1592449 --- /dev/null +++ b/nixos/modules/services/hardware/freefall.nix @@ -0,0 +1,64 @@ +{ config, lib, pkgs, utils, ... }: + +with lib; + +let + + cfg = config.services.freefall; + +in { + + options.services.freefall = { + + enable = mkOption { + type = types.bool; + default = false; + description = '' + Whether to protect HP/Dell laptop hard drives (not SSDs) in free fall. + ''; + }; + + package = mkOption { + type = types.package; + default = pkgs.freefall; + defaultText = literalExpression "pkgs.freefall"; + description = '' + freefall derivation to use. + ''; + }; + + devices = mkOption { + type = types.listOf types.str; + default = [ "/dev/sda" ]; + description = '' + Device paths to all internal spinning hard drives. + ''; + }; + + }; + + config = let + + mkService = dev: + assert dev != ""; + let dev' = utils.escapeSystemdPath dev; in + nameValuePair "freefall-${dev'}" { + description = "Free-fall protection for ${dev}"; + after = [ "${dev'}.device" ]; + wantedBy = [ "${dev'}.device" ]; + serviceConfig = { + ExecStart = "${cfg.package}/bin/freefall ${dev}"; + Restart = "on-failure"; + Type = "forking"; + }; + }; + + in mkIf cfg.enable { + + environment.systemPackages = [ cfg.package ]; + + systemd.services = builtins.listToAttrs (map mkService cfg.devices); + + }; + +} |