2594 implement graceful shutdown for local zones in zoneadm

*** 19,28 ****
--- 19,29 ----
   * CDDL HEADER END
   */
  
  /*
   * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
+  * Copyright 2014 Nexenta Systems, Inc. All rights reserved.
   */
  
  #include <assert.h>
  #include <dirent.h>
  #include <errno.h>
*** 69,78 ****
--- 70,80 ----
  #define DTD_ELEM_PRESNAP        ((const xmlChar *) "presnap")
  #define DTD_ELEM_PRESTATECHG    ((const xmlChar *) "prestatechange")
  #define DTD_ELEM_PREUNINSTALL   ((const xmlChar *) "preuninstall")
  #define DTD_ELEM_PRIVILEGE      ((const xmlChar *) "privilege")
  #define DTD_ELEM_QUERY          ((const xmlChar *) "query")
+ #define DTD_ELEM_SHUTDOWN       ((const xmlChar *) "shutdown")
  #define DTD_ELEM_SYMLINK        ((const xmlChar *) "symlink")
  #define DTD_ELEM_SYSBOOT        ((const xmlChar *) "sysboot")
  #define DTD_ELEM_UNINSTALL      ((const xmlChar *) "uninstall")
  #define DTD_ELEM_USER_CMD       ((const xmlChar *) "user_cmd")
  #define DTD_ELEM_VALIDSNAP      ((const xmlChar *) "validatesnap")
*** 499,508 ****
--- 501,519 ----
          struct brand_handle *bhp = (struct brand_handle *)bh;
          return (brand_get_value(bhp, zonename, zonepath, NULL, NULL,
              buf, len, DTD_ELEM_HALT, B_TRUE, B_TRUE));
  }
  
+ int
+ brand_get_shutdown(brand_handle_t bh, const char *zonename,
+     const char *zonepath, char *buf, size_t len)
+ {
+         struct brand_handle *bhp = (struct brand_handle *)bh;
+         return (brand_get_value(bhp, zonename, zonepath, NULL, NULL,
+             buf, len, DTD_ELEM_SHUTDOWN, B_TRUE, B_TRUE));
+ }
+ 
  int
  brand_get_initname(brand_handle_t bh, char *buf, size_t len)
  {
          struct brand_handle *bhp = (struct brand_handle *)bh;
          return (brand_get_value(bhp, NULL, NULL, NULL, NULL,