nixos-modules/host: add option microvm.virtiofsd.extraArgs

Author: astro

nixos-modules/host/default.nix

@@ -286,6 +286,7 @@ in
               ${lib.optionalString (config.microvm.virtiofsd.inodeFileHandles != null)
                 "--inode-file-handles=${config.microvm.virtiofsd.inodeFileHandles}"
               } \
+              ${lib.concatStringsSep " " config.microvm.virtiofsd.extraArgs} \
               &
             # detach from shell, but remain in systemd cgroup
             disown

nixos-modules/host/options.nix

@@ -152,5 +152,13 @@
         <https://gitlab.com/virtio-fs/virtiofsd/-/issues/121>
       '';
     };
+
+    virtiofsd.extraArgs = mkOption {
+      type = with types; listOf str;
+      default = [];
+      description = ''
+        Extra command-line switch to pass to virtiofsd.
+      '';
+    };
   };
 }