nixpkgs/nixos/modules/misc/locate.nix
Ricardo M. Correia f5951c55f7 nixos.locate: fix update-locatedb service failure
It was failing with a `Read-only filesystem` failure due to the systemd
service option `ReadWriteDirectories` not being correctly configured.

Fixes #14132
2016-04-14 13:51:17 +02:00

102 lines
3.0 KiB
Nix
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

{ 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.
'';
};
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 ${toString cfg.output})
exec updatedb \
--localuser=${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;
};
};
}