67 lines
1.2 KiB
Nix
67 lines
1.2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.haveged;
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in
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{
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###### interface
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options = {
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services.haveged = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to enable to haveged entropy daemon, which refills
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/dev/random when low.
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'';
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};
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refill_threshold = mkOption {
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type = types.int;
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default = 1024;
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description = ''
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The number of bits of available entropy beneath which
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haveged should refill the entropy pool.
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'';
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};
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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systemd.services.haveged =
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{ description = "Entropy Harvesting Daemon";
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unitConfig.Documentation = "man:haveged(8)";
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wantedBy = [ "multi-user.target" ];
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path = [ pkgs.haveged ];
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serviceConfig = {
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ExecStart = "${pkgs.haveged}/bin/haveged -F -w ${toString cfg.refill_threshold} -v 1";
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SuccessExitStatus = 143;
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PrivateTmp = true;
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PrivateDevices = true;
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PrivateNetwork = true;
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ProtectSystem = "full";
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ProtectHome = true;
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};
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};
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};
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}
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