NEX-15279 support NFS server in zone
NEX-15520 online NFS shares cause zoneadm halt to hang in nfs_export_zone_fini
Portions contributed by: Dan Kruchinin dan.kruchinin@nexenta.com
Portions contributed by: Stepan Zastupov stepan.zastupov@gmail.com
Reviewed by: Joyce McIntosh <joyce.mcintosh@nexenta.com>
Reviewed by: Rob Gittins <rob.gittins@nexenta.com>
Reviewed by: Gordon Ross <gordon.ross@nexenta.com>

*** 17,36 ****
   * fields enclosed by brackets "[]" replaced with your own identifying
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
   * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _NFS_LOG_H
  #define _NFS_LOG_H
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  #include <nfs/nfs.h>
--- 17,39 ----
   * fields enclosed by brackets "[]" replaced with your own identifying
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
+ 
  /*
   * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
+ /*
+  * Copyright 2018 Nexenta Systems, Inc.
+  */
+ 
  #ifndef _NFS_LOG_H
  #define _NFS_LOG_H
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  #include <nfs/nfs.h>
*** 652,662 ****
  extern void     nfslog_dprint(const int, const char *fmt, ...)
          __KPRINTFLIKE(2);
  extern void     *nfslog_record_alloc(struct exportinfo *, int,
                  void **, int);
  extern void     nfslog_record_free(void *, void *, size_t);
! extern struct   exportinfo *nfslog_get_exi(struct exportinfo *,
                  struct svc_req *, caddr_t, unsigned int *);
  extern void     nfslog_write_record(struct exportinfo *, struct svc_req *,
                  caddr_t, caddr_t, cred_t *, struct netbuf *, unsigned int,
                  unsigned int);
  
--- 655,665 ----
  extern void     nfslog_dprint(const int, const char *fmt, ...)
          __KPRINTFLIKE(2);
  extern void     *nfslog_record_alloc(struct exportinfo *, int,
                  void **, int);
  extern void     nfslog_record_free(void *, void *, size_t);
! extern struct   exportinfo *nfslog_get_exi(nfs_export_t *, struct exportinfo *,
                  struct svc_req *, caddr_t, unsigned int *);
  extern void     nfslog_write_record(struct exportinfo *, struct svc_req *,
                  caddr_t, caddr_t, cred_t *, struct netbuf *, unsigned int,
                  unsigned int);