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/* libkdiskfs implementation of fs.defs: file_get_translator_cntl
Copyright (C) 1992, 1993, 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 "fs_S.h"
/* Implement file_get_translator_cntl as described in <hurd/fs.defs>. */
kern_return_t
diskfs_S_file_get_translator_cntl (struct protid *cred,
mach_port_t *ctl,
mach_msg_type_name_t *ctltype)
{
struct node *np;
error_t error;
if (!cred)
return EOPNOTSUPP;
np = cred->po->np;
mutex_lock (&np->lock);
error = fshelp_isowner (&np->dn_stat, cred->user);
if (!error)
error = fshelp_fetch_control (&np->transbox, ctl);
if (ctl == MACH_PORT_NULL)
error = ENXIO;
if (!error)
*ctltype = MACH_MSG_TYPE_COPY_SEND;
mutex_unlock (&np->lock);
return error;
}
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