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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 (c) 2013 by Delphix. All rights reserved.
*/
#ifndef _SYS_ZFEATURE_H
#define _SYS_ZFEATURE_H
#include <sys/nvpair.h>
#include <sys/txg.h>
#include "zfeature_common.h"
#ifdef __cplusplus
extern "C" {
#endif
#define VALID_FEATURE_FID(fid) ((fid) >= 0 && (fid) < SPA_FEATURES)
#define VALID_FEATURE_OR_NONE(fid) ((fid) == SPA_FEATURE_NONE || \
VALID_FEATURE_FID(fid))
struct spa;
struct dmu_tx;
struct objset;
extern void spa_feature_create_zap_objects(struct spa *, struct dmu_tx *);
extern void spa_feature_enable(struct spa *, spa_feature_t,
struct dmu_tx *);
extern void spa_feature_incr(struct spa *, spa_feature_t, struct dmu_tx *);
extern void spa_feature_decr(struct spa *, spa_feature_t, struct dmu_tx *);
extern boolean_t spa_feature_is_enabled(struct spa *, spa_feature_t);
extern boolean_t spa_feature_is_active(struct spa *, spa_feature_t);
extern boolean_t spa_feature_enabled_txg(spa_t *spa, spa_feature_t fid,
uint64_t *txg);
extern uint64_t spa_feature_refcount(spa_t *, spa_feature_t, uint64_t);
extern boolean_t spa_features_check(spa_t *, boolean_t, nvlist_t *, nvlist_t *);
/*
* These functions are only exported for zhack and zdb; normal callers should
* use the above interfaces.
*/
extern int feature_get_refcount(struct spa *, zfeature_info_t *, uint64_t *);
extern int feature_get_refcount_from_disk(spa_t *spa, zfeature_info_t *feature,
uint64_t *res);
extern void feature_enable_sync(struct spa *, zfeature_info_t *,
struct dmu_tx *);
extern void feature_sync(struct spa *, zfeature_info_t *, uint64_t,
struct dmu_tx *);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_ZFEATURE_H */
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