re #12585 rb4049 ZFS++ work port - refactoring to improve separation of open/closed code, bug fixes, performance improvements - open code
Bug 11205: add missing libzfs_closed_stubs.c to fix opensource-only build.
ZFS plus work: special vdevs, cos, cos/vdev properties

@@ -18,10 +18,11 @@
  *
  * CDDL HEADER END
  */
 /*
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2013 Nexenta Systems, Inc. All rights reserved.
  */
 
 #ifndef ZPOOL_UTIL_H
 #define ZPOOL_UTIL_H
 

@@ -36,10 +37,11 @@
  * Basic utility functions
  */
 void *safe_malloc(size_t);
 void zpool_no_memory(void);
 uint_t num_logs(nvlist_t *nv);
+uint_t num_special(nvlist_t *nv);
 
 /*
  * Virtual device functions
  */