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nixpkgs/nixos/modules/services/networking/wakeonlan.nix
Eelco Dolstra 29027fd1e1 Rewrite ‘with pkgs.lib’ -> ‘with lib’
Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
2014-04-14 16:26:48 +02:00

57 lines
1.3 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
interfaces = config.services.wakeonlan.interfaces;
ethtool = "${pkgs.ethtool}/sbin/ethtool";
passwordParameter = password : if (password == "") then "" else
"sopass ${password}";
methodParameter = {method, password} :
if method == "magicpacket" then "wol g"
else if method == "password" then "wol s so ${passwordParameter password}"
else throw "Wake-On-Lan method not supported";
line = { interface, method ? "magicpacket", password ? "" }: ''
${ethtool} -s ${interface} ${methodParameter {inherit method password;}}
'';
concatStrings = fold (x: y: x + y) "";
lines = concatStrings (map (l: line l) interfaces);
in
{
###### interface
options = {
services.wakeonlan.interfaces = mkOption {
default = [ ];
example = [
{
interface = "eth0";
method = "password";
password = "00:11:22:33:44:55";
}
];
description = ''
Interfaces where to enable Wake-On-LAN, and how. Two methods available:
"magickey" and "password". The password has the shape of six bytes
in hexadecimal separated by a colon each. For more information,
check the ethtool manual.
'';
};
};
###### implementation
config.powerManagement.powerDownCommands = lines;
}