29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
80 lines
No EOL
1.7 KiB
Nix
80 lines
No EOL
1.7 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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clamavUser = "clamav";
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stateDir = "/var/lib/clamav";
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clamavGroup = clamavUser;
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cfg = config.services.clamav;
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in
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{
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###### interface
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options = {
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services.clamav = {
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updater = {
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enable = mkOption {
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default = false;
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description = ''
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Whether to enable automatic ClamAV virus definitions database updates.
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'';
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};
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frequency = mkOption {
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default = 12;
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description = ''
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Number of database checks per day.
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'';
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};
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config = mkOption {
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default = "";
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description = ''
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Extra configuration for freshclam. Contents will be added verbatim to the
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configuration file.
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'';
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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.updater.enable {
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environment.systemPackages = [ pkgs.clamav ];
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users.extraUsers = singleton
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{ name = clamavUser;
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uid = config.ids.uids.clamav;
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description = "ClamAV daemon user";
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home = stateDir;
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};
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users.extraGroups = singleton
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{ name = clamavGroup;
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gid = config.ids.gids.clamav;
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};
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services.clamav.updater.config = ''
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DatabaseDirectory ${stateDir}
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Foreground yes
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Checks ${toString cfg.updater.frequency}
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DatabaseMirror database.clamav.net
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'';
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jobs = {
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clamav_updater = {
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name = "clamav-updater";
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startOn = "started network-interfaces";
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stopOn = "stopping network-interfaces";
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preStart = ''
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mkdir -m 0755 -p ${stateDir}
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chown ${clamavUser}:${clamavGroup} ${stateDir}
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'';
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exec = "${pkgs.clamav}/bin/freshclam --config-file=${pkgs.writeText "freshclam.conf" cfg.updater.config}";
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};
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};
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};
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} |