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36c7c50512
The docstring for the `services.dbus.packages` configuration option only mentioned one directory, but the implementation actually looked for DBus config files in four separate places within the target packages. This commit updates the docstring to reflect the actual implementation behaviour.
130 lines
3.3 KiB
Nix
130 lines
3.3 KiB
Nix
# D-Bus configuration and system bus daemon.
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.dbus;
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homeDir = "/var/run/dbus";
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systemExtraxml = concatStrings (flip concatMap cfg.packages (d: [
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"<servicedir>${d}/share/dbus-1/system-services</servicedir>"
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"<includedir>${d}/etc/dbus-1/system.d</includedir>"
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]));
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sessionExtraxml = concatStrings (flip concatMap cfg.packages (d: [
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"<servicedir>${d}/share/dbus-1/services</servicedir>"
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"<includedir>${d}/etc/dbus-1/session.d</includedir>"
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]));
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configDir = pkgs.stdenv.mkDerivation {
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name = "dbus-conf";
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preferLocalBuild = true;
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allowSubstitutes = false;
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buildCommand = ''
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mkdir -p $out
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sed '${./dbus-system-local.conf.in}' \
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-e 's,@servicehelper@,${config.security.wrapperDir}/dbus-daemon-launch-helper,g' \
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-e 's,@extra@,${systemExtraxml},' \
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> "$out/system-local.conf"
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sed '${./dbus-session-local.conf.in}' \
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-e 's,@extra@,${sessionExtraxml},' \
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> "$out/session-local.conf"
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'';
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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.dbus = {
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enable = mkOption {
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type = types.bool;
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default = false;
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internal = true;
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description = ''
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Whether to start the D-Bus message bus daemon, which is
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required by many other system services and applications.
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'';
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};
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packages = mkOption {
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type = types.listOf types.path;
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default = [ ];
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description = ''
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Packages whose D-Bus configuration files should be included in
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the configuration of the D-Bus system-wide or session-wide
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message bus. Specifically, files in the following directories
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will be included into their respective DBus configuration paths:
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<filename><replaceable>pkg</replaceable>/etc/dbus-1/system.d</filename>
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<filename><replaceable>pkg</replaceable>/share/dbus-1/system-services</filename>
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<filename><replaceable>pkg</replaceable>/etc/dbus-1/session.d</filename>
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<filename><replaceable>pkg</replaceable>/share/dbus-1/services</filename>
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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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environment.systemPackages = [ pkgs.dbus.daemon pkgs.dbus_tools ];
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environment.etc = singleton
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{ source = configDir;
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target = "dbus-1";
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};
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users.extraUsers.messagebus = {
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uid = config.ids.uids.messagebus;
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description = "D-Bus system message bus daemon user";
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home = homeDir;
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group = "messagebus";
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};
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users.extraGroups.messagebus.gid = config.ids.gids.messagebus;
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systemd.packages = [ pkgs.dbus.daemon ];
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security.setuidOwners = singleton
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{ program = "dbus-daemon-launch-helper";
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source = "${pkgs.dbus_daemon.out}/libexec/dbus-daemon-launch-helper";
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owner = "root";
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group = "messagebus";
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setuid = true;
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setgid = false;
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permissions = "u+rx,g+rx,o-rx";
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};
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services.dbus.packages = [
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pkgs.dbus.out
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config.system.path
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];
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# Don't restart dbus-daemon. Bad things tend to happen if we do.
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systemd.services.dbus.reloadIfChanged = true;
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systemd.services.dbus.restartTriggers = [ configDir ];
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environment.pathsToLink = [ "/etc/dbus-1" "/share/dbus-1" ];
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};
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}
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