86 lines
2 KiB
Nix
86 lines
2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.locate;
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in {
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###### interface
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options = {
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services.locate = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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If enabled, NixOS will periodically update the database of
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files used by the <command>locate</command> command.
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'';
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};
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period = mkOption {
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type = types.str;
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default = "15 02 * * *";
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description = ''
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This option defines (in the format used by cron) when the
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locate database is updated.
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The default is to update at 02:15 at night every day.
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'';
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};
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extraFlags = mkOption {
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type = types.listOf types.str;
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default = [ ];
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description = ''
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Extra flags to append to <command>updatedb</command>.
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'';
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};
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output = mkOption {
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type = types.path;
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default = /var/cache/locatedb;
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description = ''
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The database file to build.
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'';
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};
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localuser = mkOption {
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type = types.str;
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default = "nobody";
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description = ''
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The user to search non-network directories as, using
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<command>su</command>.
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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 = {
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systemd.services.update-locatedb =
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{ description = "Update Locate Database";
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path = [ pkgs.su ];
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script =
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''
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mkdir -m 0755 -p $(dirname ${toString cfg.output})
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exec updatedb \
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--localuser=${cfg.localuser} \
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--output=${toString cfg.output} ${concatStringsSep " " cfg.extraFlags}
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'';
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serviceConfig.Nice = 19;
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serviceConfig.IOSchedulingClass = "idle";
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};
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services.cron.systemCronJobs = optional config.services.locate.enable
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"${config.services.locate.period} root ${config.systemd.package}/bin/systemctl start update-locatedb.service";
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};
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}
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