diff options
Diffstat (limited to 'nixpkgs/nixos/modules/services/monitoring/incron.nix')
-rw-r--r-- | nixpkgs/nixos/modules/services/monitoring/incron.nix | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/nixpkgs/nixos/modules/services/monitoring/incron.nix b/nixpkgs/nixos/modules/services/monitoring/incron.nix new file mode 100644 index 000000000000..1789fd9f2051 --- /dev/null +++ b/nixpkgs/nixos/modules/services/monitoring/incron.nix @@ -0,0 +1,98 @@ + +{ config, lib, pkgs, ... }: + +with lib; + +let + + cfg = config.services.incron; + +in + +{ + options = { + + services.incron = { + + enable = mkOption { + type = types.bool; + default = false; + description = '' + Whether to enable the incron daemon. + + Note that commands run under incrontab only support common Nix profiles for the <envar>PATH</envar> provided variable. + ''; + }; + + allow = mkOption { + type = types.nullOr (types.listOf types.str); + default = null; + description = '' + Users allowed to use incrontab. + + If empty then no user will be allowed to have their own incrontab. + If <literal>null</literal> then will defer to <option>deny</option>. + If both <option>allow</option> and <option>deny</option> are null + then all users will be allowed to have their own incrontab. + ''; + }; + + deny = mkOption { + type = types.nullOr (types.listOf types.str); + default = null; + description = "Users forbidden from using incrontab."; + }; + + systab = mkOption { + type = types.lines; + default = ""; + description = "The system incrontab contents."; + example = '' + /var/mail IN_CLOSE_WRITE abc $@/$# + /tmp IN_ALL_EVENTS efg $@/$# $& + ''; + }; + + extraPackages = mkOption { + type = types.listOf types.package; + default = []; + example = literalExample "[ pkgs.rsync ]"; + description = "Extra packages available to the system incrontab."; + }; + + }; + + }; + + config = mkIf cfg.enable { + + warnings = optional (cfg.allow != null && cfg.deny != null) + ''If `services.incron.allow` is set then `services.incron.deny` will be ignored.''; + + environment.systemPackages = [ pkgs.incron ]; + + security.wrappers.incrontab.source = "${pkgs.incron}/bin/incrontab"; + + # incron won't read symlinks + environment.etc."incron.d/system" = { + mode = "0444"; + text = cfg.systab; + }; + environment.etc."incron.allow" = mkIf (cfg.allow != null) { + text = concatStringsSep "\n" cfg.allow; + }; + environment.etc."incron.deny" = mkIf (cfg.deny != null) { + text = concatStringsSep "\n" cfg.deny; + }; + + systemd.services.incron = { + description = "File System Events Scheduler"; + wantedBy = [ "multi-user.target" ]; + path = cfg.extraPackages; + serviceConfig.PIDFile = "/run/incrond.pid"; + serviceConfig.ExecStartPre = "${pkgs.coreutils}/bin/mkdir -m 710 -p /var/spool/incron"; + serviceConfig.ExecStart = "${pkgs.incron}/bin/incrond --foreground"; + }; + }; + +} |