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{ config, options, lib, pkgs, ... }:
with lib;
let
cfg = config.services.locate;
in {
options.services.locate = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
If enabled, NixOS will periodically update the database of
files used by the <command>locate</command> command.
'';
};
locate = mkOption {
type = types.package;
default = pkgs.findutils;
example = "pkgs.mlocate";
description = ''
The locate implementation to use
'';
};
interval = mkOption {
type = types.str;
default = "02:15";
example = "hourly";
description = ''
Update the locate database at this interval. Updates by
default at 2:15 AM every day.
The format is described in
<citerefentry><refentrytitle>systemd.time</refentrytitle>
<manvolnum>7</manvolnum></citerefentry>.
'';
};
# This is no longer supported, but we keep it to give a better warning below
period = mkOption { visible = false; };
extraFlags = mkOption {
type = types.listOf types.str;
default = [ ];
description = ''
Extra flags to pass to <command>updatedb</command>.
'';
};
output = mkOption {
type = types.path;
default = "/var/cache/locatedb";
description = ''
The database file to build.
'';
};
localuser = mkOption {
type = types.str;
default = "nobody";
description = ''
The user to search non-network directories as, using
<command>su</command>.
'';
};
includeStore = mkOption {
type = types.bool;
default = false;
description = ''
Whether to include <filename>/nix/store</filename> in the locate database.
'';
};
};
config = {
warnings =
let opt = options.services.locate.period; in
optional opt.isDefined "The ‘services.locate.period’ option in ${showFiles opt.files} has been removed; please replace it with ‘services.locate.interval’, using the systemd.time(7) calendar event format.";
systemd.services.update-locatedb =
{ description = "Update Locate Database";
path = [ pkgs.su ];
script =
''
mkdir -m 0755 -p $(dirname ${toString cfg.output})
exec ${cfg.locate}/bin/updatedb \
--localuser=${cfg.localuser} \
${optionalString (!cfg.includeStore) "--prunepaths='/nix/store'"} \
--output=${toString cfg.output} ${concatStringsSep " " cfg.extraFlags}
'';
serviceConfig.Nice = 19;
serviceConfig.IOSchedulingClass = "idle";
serviceConfig.PrivateTmp = "yes";
serviceConfig.PrivateNetwork = "yes";
serviceConfig.NoNewPrivileges = "yes";
serviceConfig.ReadOnlyDirectories = "/";
serviceConfig.ReadWriteDirectories = dirOf cfg.output;
};
systemd.timers.update-locatedb = mkIf cfg.enable
{ description = "Update timer for locate database";
partOf = [ "update-locatedb.service" ];
wantedBy = [ "timers.target" ];
timerConfig.OnCalendar = cfg.interval;
};
};
}
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