1 files changed, 25 insertions, 0 deletions
diff --git a/system/worldWritableDirs.nix b/system/worldWritableDirs.nix
new file mode 100644
index 0000000..9899696
--- /dev/null
+++ b/system/worldWritableDirs.nix
@@ -0,0 +1,25 @@
+{ config, pkgs, lib, ... }:
+let
+  dirs = config.nixsap.system.worldWritableDirs;
+
+in {
+  options.nixsap.system.worldWritableDirs = lib.mkOption {
+    type = lib.types.listOf lib.types.path;
+    description = "These dirs will be chmod'ed 1777";
+    default = [ "/tmp" "/var/tmp" ];
+  };
+
+  config = lib.mkIf (dirs != []) {
+    systemd.services.chmod1777 = {
+      description = "Make some dirs world-writable";
+      unitConfig.RequiresMountsFor = dirs;
+      before = [ "local-fs.target" ];
+      wantedBy = [ "local-fs.target" ];
+      serviceConfig = {
+        ExecStart = "${pkgs.coreutils}/bin/chmod -c 1777 ${lib.concatStringsSep " " dirs}";
+        Type = "oneshot";
+        RemainAfterExit = true;
+      };
+    };
+  };
+}