bc6471d981
new function nfs41_delegation_return() for synchronous delegation return. uses a condition variable to wait if another thread is already returning the delegation if nfs41_delegate_open() would conflict with a delegation, return it before sending the OPEN return the delegation before sending LINK, RENAME, REMOVE, and SETATTR all of this functionality is dependent on the preprocessor define DELEGATION_RETURN_ON_CONFLICT (on by default). if not defined, nfs41_delegation_return() is a noop Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/* Copyright (c) 2010
|
|
* The Regents of the University of Michigan
|
|
* All Rights Reserved
|
|
*
|
|
* Permission is granted to use, copy and redistribute this software
|
|
* for noncommercial education and research purposes, so long as no
|
|
* fee is charged, and so long as the name of the University of Michigan
|
|
* is not used in any advertising or publicity pertaining to the use
|
|
* or distribution of this software without specific, written prior
|
|
* authorization. Permission to modify or otherwise create derivative
|
|
* works of this software is not granted.
|
|
*
|
|
* This software is provided as is, without representation or warranty
|
|
* of any kind either express or implied, including without limitation
|
|
* the implied warranties of merchantability, fitness for a particular
|
|
* purpose, or noninfringement. The Regents of the University of
|
|
* Michigan shall not be liable for any damages, including special,
|
|
* indirect, incidental, or consequential damages, with respect to any
|
|
* claim arising out of or in connection with the use of the software,
|
|
* even if it has been or is hereafter advised of the possibility of
|
|
* such damages.
|
|
*/
|
|
|
|
#ifndef DELEGATION_H
|
|
#define DELEGATION_H
|
|
|
|
#include "nfs41.h"
|
|
|
|
|
|
/* option to avoid conflicts by returning the delegation */
|
|
#define DELEGATION_RETURN_ON_CONFLICT
|
|
|
|
|
|
/* reference counting and cleanup */
|
|
void nfs41_delegation_ref(
|
|
IN nfs41_delegation_state *state);
|
|
|
|
void nfs41_delegation_deref(
|
|
IN nfs41_delegation_state *state);
|
|
|
|
void nfs41_client_delegation_free(
|
|
IN nfs41_client *client);
|
|
|
|
|
|
/* open delegation */
|
|
int nfs41_delegation_granted(
|
|
IN nfs41_session *session,
|
|
IN nfs41_path_fh *file,
|
|
IN open_delegation4 *delegation,
|
|
OUT nfs41_delegation_state **deleg_out);
|
|
|
|
int nfs41_delegate_open(
|
|
IN nfs41_client *client,
|
|
IN nfs41_path_fh *file,
|
|
IN uint32_t create,
|
|
IN uint32_t access,
|
|
IN uint32_t deny,
|
|
OUT nfs41_delegation_state **deleg_out,
|
|
OUT nfs41_file_info *info);
|
|
|
|
int nfs41_delegation_to_open(
|
|
IN nfs41_open_state *open,
|
|
IN bool_t try_recovery);
|
|
|
|
|
|
/* synchronous delegation return */
|
|
#ifdef DELEGATION_RETURN_ON_CONFLICT
|
|
int nfs41_delegation_return(
|
|
IN nfs41_session *session,
|
|
IN nfs41_path_fh *file,
|
|
IN enum open_delegation_type4 access,
|
|
IN bool_t truncate);
|
|
#else
|
|
static int nfs41_delegation_return(
|
|
IN nfs41_session *session,
|
|
IN nfs41_path_fh *file,
|
|
IN enum open_delegation_type4 access,
|
|
IN bool_t truncate)
|
|
{
|
|
return NFS4_OK;
|
|
}
|
|
#endif
|
|
|
|
|
|
/* asynchronous delegation recall */
|
|
int nfs41_delegation_recall(
|
|
IN nfs41_client *client,
|
|
IN nfs41_fh *fh,
|
|
IN const stateid4 *stateid,
|
|
IN bool_t truncate);
|
|
|
|
#endif /* DELEGATION_H */
|