/*
   Copyright (C) 1999 Free Software Foundation, Inc.
   Written by Thomas Bushnell, 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 "priv.h"

/* Called when the last hard reference is released.  If there are no
   links, then request soft references to be dropped.  */
void
_diskfs_lastref (struct node *np)
{
  /* This is our cue that something akin to "last process closes file"
     in the POSIX.1 sense happened, so make sure any pending node time
     updates now happen in a timely fashion.  */
  diskfs_set_node_times (np);
  diskfs_lost_hardrefs (np);
  if (!np->dn_stat.st_nlink)
    {
      if (np->sockaddr != MACH_PORT_NULL)
	{
	  mach_port_deallocate (mach_task_self (), np->sockaddr);
	  np->sockaddr = MACH_PORT_NULL;
	}

      /* There are no links.  If there are soft references that
	 can be dropped, we can't let them postpone deallocation.
	 So attempt to drop them.  But that's a user-supplied
	 routine, which might result in further recursive calls to
	 the ref-counting system.  This is not a problem, as we
	 hold a weak reference ourselves. */
      diskfs_try_dropping_softrefs (np);
    }
}