diff options
Diffstat (limited to 'nixos/modules/services/hardware/acpid.nix')
-rw-r--r-- | nixos/modules/services/hardware/acpid.nix | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/nixos/modules/services/hardware/acpid.nix b/nixos/modules/services/hardware/acpid.nix new file mode 100644 index 00000000000..883ef083003 --- /dev/null +++ b/nixos/modules/services/hardware/acpid.nix @@ -0,0 +1,155 @@ +{ config, lib, pkgs, ... }: + +with lib; + +let + cfg = config.services.acpid; + + canonicalHandlers = { + powerEvent = { + event = "button/power.*"; + action = cfg.powerEventCommands; + }; + + lidEvent = { + event = "button/lid.*"; + action = cfg.lidEventCommands; + }; + + acEvent = { + event = "ac_adapter.*"; + action = cfg.acEventCommands; + }; + }; + + acpiConfDir = pkgs.runCommand "acpi-events" { preferLocalBuild = true; } + '' + mkdir -p $out + ${ + # Generate a configuration file for each event. (You can't have + # multiple events in one config file...) + let f = name: handler: + '' + fn=$out/${name} + echo "event=${handler.event}" > $fn + echo "action=${pkgs.writeShellScriptBin "${name}.sh" handler.action }/bin/${name}.sh '%e'" >> $fn + ''; + in concatStringsSep "\n" (mapAttrsToList f (canonicalHandlers // cfg.handlers)) + } + ''; + +in + +{ + + ###### interface + + options = { + + services.acpid = { + + enable = mkEnableOption "the ACPI daemon"; + + logEvents = mkOption { + type = types.bool; + default = false; + description = "Log all event activity."; + }; + + handlers = mkOption { + type = types.attrsOf (types.submodule { + options = { + event = mkOption { + type = types.str; + example = literalExpression ''"button/power.*" "button/lid.*" "ac_adapter.*" "button/mute.*" "button/volumedown.*" "cd/play.*" "cd/next.*"''; + description = "Event type."; + }; + + action = mkOption { + type = types.lines; + description = "Shell commands to execute when the event is triggered."; + }; + }; + }); + + description = '' + Event handlers. + + <note><para> + Handler can be a single command. + </para></note> + ''; + default = {}; + example = { + ac-power = { + event = "ac_adapter/*"; + action = '' + vals=($1) # space separated string to array of multiple values + case ''${vals[3]} in + 00000000) + echo unplugged >> /tmp/acpi.log + ;; + 00000001) + echo plugged in >> /tmp/acpi.log + ;; + *) + echo unknown >> /tmp/acpi.log + ;; + esac + ''; + }; + }; + }; + + powerEventCommands = mkOption { + type = types.lines; + default = ""; + description = "Shell commands to execute on a button/power.* event."; + }; + + lidEventCommands = mkOption { + type = types.lines; + default = ""; + description = "Shell commands to execute on a button/lid.* event."; + }; + + acEventCommands = mkOption { + type = types.lines; + default = ""; + description = "Shell commands to execute on an ac_adapter.* event."; + }; + + }; + + }; + + + ###### implementation + + config = mkIf cfg.enable { + + systemd.services.acpid = { + description = "ACPI Daemon"; + documentation = [ "man:acpid(8)" ]; + + wantedBy = [ "multi-user.target" ]; + + serviceConfig = { + ExecStart = escapeShellArgs + ([ "${pkgs.acpid}/bin/acpid" + "--foreground" + "--netlink" + "--confdir" "${acpiConfDir}" + ] ++ optional cfg.logEvents "--logevents" + ); + }; + unitConfig = { + ConditionVirtualization = "!systemd-nspawn"; + ConditionPathExists = [ "/proc/acpi" ]; + }; + + }; + + }; + +} |