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125 lines
3 KiB
Nix
125 lines
3 KiB
Nix
# HAL daemon.
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{pkgs, config, ...}:
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with pkgs.lib;
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let
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cfg = config.services.hal;
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inherit (pkgs) hal;
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fdi = pkgs.buildEnv {
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name = "hal-fdi";
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pathsToLink = [ "/share/hal/fdi" ];
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paths = cfg.packages;
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};
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in
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{
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###### interface
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options = {
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services.hal = {
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enable = mkOption {
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default = true;
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description = ''
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Whether to start the HAL daemon.
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'';
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};
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packages = mkOption {
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default = [];
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description = ''
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Packages containing additional HAL configuration data.
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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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# !!! move pmutils somewhere else
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environment.systemPackages = [hal pkgs.pmutils];
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services.hal.packages = [hal pkgs.hal_info];
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users.extraUsers = singleton
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{ name = "haldaemon";
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uid = config.ids.uids.haldaemon;
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description = "HAL daemon user";
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};
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users.extraGroups = singleton
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{ name = "haldaemon";
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gid = config.ids.gids.haldaemon;
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};
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jobs = singleton
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{ name = "hal";
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description = "HAL daemon";
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# !!! TODO: make sure that HAL starts after acpid,
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# otherwise hald-addon-acpi will grab /proc/acpi/event.
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startOn = if config.powerManagement.enable then "acpid" else "dbus";
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stopOn = "shutdown";
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environment =
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{ # !!! HACK? These environment variables manipulated inside
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# 'src'/hald/mmap_cache.c are used for testing the daemon.
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HAL_FDI_SOURCE_PREPROBE = "${fdi}/share/hal/fdi/preprobe";
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HAL_FDI_SOURCE_INFORMATION = "${fdi}/share/hal/fdi/information";
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HAL_FDI_SOURCE_POLICY = "${fdi}/share/hal/fdi/policy";
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# Stuff needed by the shell scripts run by HAL (in particular pm-utils).
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HALD_RUNNER_PATH = concatStringsSep ":"
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[ "${pkgs.coreutils}/bin"
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"${pkgs.gnugrep}/bin"
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"${pkgs.dbus.tools}/bin"
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"${pkgs.procps}/bin"
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"${pkgs.procps}/sbin"
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"${config.system.sbin.modprobe}/sbin"
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"${pkgs.module_init_tools}/bin"
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"${pkgs.module_init_tools}/sbin"
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"${pkgs.kbd}/bin"
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];
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};
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preStart =
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''
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mkdir -m 0755 -p /var/cache/hald
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mkdir -m 0755 -p /var/run/hald
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rm -f /var/cache/hald/fdi-cache
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# !!! Hack: start the daemon here to make sure it's
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# running when the Upstart job reaches the "running"
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# state. Should be fixable in Upstart 0.6.
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${hal}/sbin/hald --use-syslog # --verbose=yes
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'';
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postStop =
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''
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pid=$(cat /var/run/hald/pid)
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test -n "$pid" && kill "$pid"
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'';
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};
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services.udev.packages = [hal];
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services.dbus.enable = true;
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services.dbus.packages = [hal];
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};
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} |