/* 
   Copyright (C) 1994, 1995 Free Software Foundation

   This program 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.

   This program 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., 675 Mass Ave, Cambridge, MA 02139, USA. */

#include "diskfs.h"
#include "priv.h"
#include "io_S.h"
#include <fcntl.h>

/* Implement io_sigio as described in <hurd/io.defs>.  We do this
   for O_FSYNC right now, but will eventually do it for async I/O
   too.  */
kern_return_t
diskfs_S_io_sigio (struct protid *cred)
{
  diskfs_transaction_t *txn;
  if (!cred)
    return EOPNOTSUPP;

  if (!((cred->po->openstat & O_FSYNC) || diskfs_synchronous))
    return 0;

  txn = diskfs_journal_start_transaction ();
  pthread_mutex_lock (&cred->po->np->lock);

  diskfs_file_update (cred->po->np, 1);

  pthread_mutex_unlock (&cred->po->np->lock);
  diskfs_journal_commit_transaction (txn);
  return 0;
}
