/* libnetfs implementation of io_identity RPC
   Copyright (C) 1996 Free Software Foundation, Inc.
   Written by Michael I. Bushnell, p/BSG.

   This file is part of the GNU Hurd.

   The GNU Hurd is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License as
   published by the Free Software Foundation; either version 2, or (at
   your option) any later version.

   The GNU Hurd is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */

#include "netfs.h"
#include "io_S.h"

error_t
netfs_S_io_identity (struct protid *cred,
		     mach_port_t *id,
		     mach_msg_type_name_t *idtype,
		     mach_port_t *fsys,
		     mach_msg_type_name_t *fsystype,
		     int *fileno)
{
  struct node *np;
  error_t err;
  
  if (!cred)
    return EOPNOTSUPP;
  
  np = cred->po->np;
  mutex_lock (&np->lock);
  
  if (np->identity == MACH_PORT_NULL)
    {
      err = mach_port_allocate (mach_task_self (), MACH_PORT_RIGHT_RECEIVE,
				&np->identity);
      if (err)
	{
	  mutex_unlock (&np->lock);
	  return err;
	}
    }
  
  *id = np->identity;
  *idtype = MACH_MSG_TYPE_MAKE_SEND;
  *fsys = netfs_fsys_identity;
  *fsystype = MACH_MSG_TYPE_MAKE_SEND;
  *fileno = np->dn_stat.st_ino;
  
  mutex_unlock (&np->lock);
  return 0;
}