src/include/nlm_util.h

/*
 * Copyright IBM Corporation, 2010
 *  Contributor: Aneesh Kumar K.v  <aneesh.kumar@linux.vnet.ibm.com>
 *
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
 *
 * ---------------------------------------
 *
 *
 */

#ifndef NLM_UTIL_H
#define NLM_UTIL_H

#include "gsh_list.h"
#include "nlm4.h"
#include "sal_data.h"

extern const char *lock_result_str(int rc);
extern void copy_netobj(netobj *dst, netobj *src);
extern void netobj_free(netobj *obj);
extern void netobj_to_string(netobj *obj, char *buffer, int maxlen);

/**
 * process_nlm_parameters: Process NLM parameters
 *
 * Returns -1 for a request that needs processing, otherwise returns an NLM
 * status
 *
 * preq:         passed in so interface doesn't need to change when NLM Client
 *               uses IP address
 * exclusive:    TRUE if lock is a write lock
 * alock:        nlm4_lock request structure
 * plock:        cache_lock_desc_t to fill in from alock
 * ppobj:        FSAL obj pointer to fill in
 * pexport:      the export of interest
 * pclient:      cache inode client
 * care:         TRUE if this caller cares if an owner is found (otherwise
 *               return NLM4_GRANTED
 *               because the caller will have nothing to do)
 * ppnlm_client: NLM Client to fill in, returns a reference to the client
 * ppowner:      NLM Owner to fill in, returns a reference to the owner
 * ppblock_data: Data required to make a call back to the client to grant a
 *               blocked lock
 */
int nlm_process_parameters(struct svc_req *req, bool exclusive,
			   nlm4_lock *alock, fsal_lock_param_t *plock,
			   struct fsal_obj_handle **ppobj,
			   care_t care, state_nsm_client_t **ppnsm_client,
			   state_nlm_client_t **ppnlm_client,
			   state_owner_t **ppowner,
			   state_block_data_t **block_data,
			   bool nsm_state_applies,
			   int32_t nsm_state,
			   state_t **state);

int nlm_process_share_parms(struct svc_req *req, nlm4_share *share,
			    struct fsal_export *exp_hdl,
			    struct fsal_obj_handle **ppobj, care_t care,
			    state_nsm_client_t **ppnsm_client,
			    state_nlm_client_t **ppnlm_client,
			    state_owner_t **ppowner,
			    state_t **state);

void nlm_process_conflict(nlm4_holder *nlm_holder, state_owner_t *holder,
			  fsal_lock_param_t *conflict);

nlm4_stats nlm_convert_state_error(state_status_t status);

state_status_t nlm_granted_callback(struct fsal_obj_handle *obj,
				    state_lock_entry_t *lock_entry);

#endif				/* NLM_UTIL_H */