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/*
Copyright (C) 1994, 1995, 1996 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 "priv.h"
#include "io_S.h"
/* Implement io_duplicate as described in <hurd/io.defs>. */
kern_return_t
diskfs_S_io_duplicate (struct protid *cred,
mach_port_t *port,
mach_msg_type_name_t *portpoly)
{
error_t err;
struct protid *newpi;
if (!cred)
return EOPNOTSUPP;
pthread_mutex_lock (&cred->po->np->lock);
refcount_ref (&cred->po->refcnt);
err = diskfs_create_protid (cred->po, cred->user, &newpi);
if (! err)
{
*port = ports_get_right (newpi);
*portpoly = MACH_MSG_TYPE_MAKE_SEND;
ports_port_deref (newpi);
}
else
refcount_deref (&cred->po->refcnt);
pthread_mutex_unlock (&cred->po->np->lock);
return err;
}
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