ms-nfs41-client/daemon/delegation.h
Casey Bodley 02216cbf28 deleg: return delegation on CB_RECALL
moved thread creation from callback_server.c to nfs41_delegation_recall() in delegation.c

nfs41_delegation_recall() first searches for the delegation, and returns NFS4ERR_BADHANDLE if not found.  otherwise, it spawns a thread to handle the recall and returns NFS4_OK

delegation_return() calls nfs41_delegation_to_open() for each nfs41_open_state associated with the delegation

nfs41_delegation_to_open() sends OPEN with CLAIM_DELEGATE_CUR to reclaim an open stateid, and uses a condition variable in nfs41_open_state to prevent multiple threads from attempting reclaim

Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
2011-07-18 15:24:22 -04:00

69 lines
2.2 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"
/* 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);
/* 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 */