NEX-6673 possible NULL pointer dereference in mountd`mount
Reviewed by: Evan Layton <evan.layton@nexenta.com>
Reviewed by: Gordon Ross <gordon.ross@nexenta.com>
Reviewed by: Alex Deiter <alex.deiter@nexenta.com>
NEX-4116 mountd: The IP to name translation is usually not needed in nfsauth_access()
Reviewed by: Gordon Ross <gordon.ross@nexenta.com>
NEX-1974 Support for more than 16 groups with AUTH_SYS
Reviewed by: Gordon Ross <gordon.ross@nexenta.com>
Reviewed by: Josef 'Jeff' Sipek <josef.sipek@nexenta.com>
NEX-1128 NFS server: Generic uid and gid remapping for AUTH_SYS
Reviewed by: Jan Kryl <jan.kryl@nexenta.com>

*** 18,33 ****
   *
   * CDDL HEADER END
   */
  
  /*
-  * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
-  */
- 
- /*
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <sys/types.h>
--- 18,30 ----
   *
   * CDDL HEADER END
   */
  
  /*
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
+  * Copyright 2016 Nexenta Systems, Inc.
   */
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <sys/types.h>
*** 88,110 ****
              &result->auth_srv_gids.val);
  
          sharefree(sh);
  
          if (result->auth_perm == NFSAUTH_DENIED) {
!                 char *host = cln_gethost(&cln);
!                 if (host != NULL)
!                         syslog(LOG_ERR, "%s denied access to %s", host,
                              argp->req_path);
          }
  
          cln_fini(&cln);
  }
  
  void
! nfsauth_func(void *cookie, char *dataptr, size_t arg_size,
!         door_desc_t *dp, uint_t n_desc)
! 
  {
          nfsauth_arg_t   *ap;
          nfsauth_res_t    res = {0};
          XDR              xdrs_a;
          XDR              xdrs_r;
--- 85,104 ----
              &result->auth_srv_gids.val);
  
          sharefree(sh);
  
          if (result->auth_perm == NFSAUTH_DENIED) {
!                 syslog(LOG_ERR, "%s denied access to %s", cln_gethost(&cln),
                      argp->req_path);
          }
  
          cln_fini(&cln);
  }
  
  void
! nfsauth_func(void *cookie, char *dataptr, size_t arg_size, door_desc_t *dp,
!     uint_t n_desc)
  {
          nfsauth_arg_t   *ap;
          nfsauth_res_t    res = {0};
          XDR              xdrs_a;
          XDR              xdrs_r;