Add freefall NixOS service module

This commit is contained in:
Tobias Geerinckx-Rice 2015-01-08 23:38:10 +01:00
parent 94a600772e
commit ff5eae075a
2 changed files with 63 additions and 0 deletions

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@ -144,6 +144,7 @@
./services/hardware/acpid.nix
./services/hardware/amd-hybrid-graphics.nix
./services/hardware/bluetooth.nix
./services/hardware/freefall.nix
./services/hardware/nvidia-optimus.nix
./services/hardware/pcscd.nix
./services/hardware/pommed.nix

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@ -0,0 +1,62 @@
{ config, lib, pkgs, utils, ... }:
with lib;
{
###### interface
options = with types; {
services.freefall = {
enable = mkOption {
default = false;
description = ''
Whether to protect HP/Dell laptop hard drives (not SSDs) in free fall.
'';
type = bool;
};
devices = mkOption {
default = [ "/dev/sda" ];
description = ''
Device paths to all internal spinning hard drives.
'';
type = listOf string;
};
};
};
###### implementation
config = let
cfg = config.services.freefall;
mkService = dev:
assert dev != "";
let dev' = utils.escapeSystemdPath dev; in
nameValuePair "freefall-${dev'}"
{ description = "Free-fall protection for ${dev}";
after = [ "${dev'}.device" ];
wantedBy = [ "${dev'}.device" ];
path = [ pkgs.freefall ];
serviceConfig = {
ExecStart = "${pkgs.freefall}/bin/freefall ${dev}";
Restart = "on-failure";
Type = "forking";
};
};
in mkIf cfg.enable {
environment.systemPackages = [ pkgs.freefall ];
systemd.services = listToAttrs (map mkService cfg.devices);
};
}