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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _MDEG_H
#define _MDEG_H
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* MD Event Generator (mdeg) interface.
*/
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/mdesc.h>
/*
* Specification of a node property.
*/
typedef struct {
uint8_t type;
char *namep;
union {
char *strp;
uint64_t val;
} _p;
} mdeg_prop_spec_t;
#define ps_str _p.strp
#define ps_val _p.val
/*
* Specification of unique node in the MD. The array
* of property name value pairs is used to determine
* whether the node matches the specification.
*/
typedef struct {
char *namep;
mdeg_prop_spec_t *specp;
} mdeg_node_spec_t;
/*
* Specification of a method to match nodes. The
* array of properties are used to match two nodes
* from different MDs. If the specified properties
* match, the nodes are the same.
*/
typedef struct {
char *namep;
md_prop_match_t *matchp;
} mdeg_node_match_t;
/*
* The result of the MD update as communicated
* through the parameter to the registered callback.
*/
typedef struct {
md_t *mdp;
mde_cookie_t *mdep;
uint_t nelem;
} mdeg_diff_t;
/*
* Results of the MD update for a specific registration
*/
typedef struct {
mdeg_diff_t added;
mdeg_diff_t removed;
mdeg_diff_t match_curr;
mdeg_diff_t match_prev;
} mdeg_result_t;
/*
* Client Interface
*/
#define MDEG_SUCCESS 0
#define MDEG_FAILURE 1
typedef uint64_t mdeg_handle_t;
typedef int (*mdeg_cb_t)(void *cb_argp, mdeg_result_t *resp);
int mdeg_register(mdeg_node_spec_t *pspecp, mdeg_node_match_t *nmatchp,
mdeg_cb_t cb, void *cb_argp, mdeg_handle_t *hdlp);
int mdeg_unregister(mdeg_handle_t hdl);
#ifdef __cplusplus
}
#endif
#endif /* _MDEG_H */
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