1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright (c) 2013 by Delphix. All rights reserved. 25 */ 26 27 #ifndef _SYS_ZFEATURE_H 28 #define _SYS_ZFEATURE_H 29 30 #include <sys/nvpair.h> 31 #include <sys/txg.h> 32 #include "zfeature_common.h" 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #define VALID_FEATURE_FID(fid) ((fid) >= 0 && (fid) < SPA_FEATURES) 39 #define VALID_FEATURE_OR_NONE(fid) ((fid) == SPA_FEATURE_NONE || \ 40 VALID_FEATURE_FID(fid)) 41 42 struct spa; 43 struct dmu_tx; 44 struct objset; 45 46 extern void spa_feature_create_zap_objects(struct spa *, struct dmu_tx *); 47 extern void spa_feature_enable(struct spa *, spa_feature_t, 48 struct dmu_tx *); 49 extern void spa_feature_incr(struct spa *, spa_feature_t, struct dmu_tx *); 50 extern void spa_feature_decr(struct spa *, spa_feature_t, struct dmu_tx *); 51 extern boolean_t spa_feature_is_enabled(struct spa *, spa_feature_t); 52 extern boolean_t spa_feature_is_active(struct spa *, spa_feature_t); 53 extern boolean_t spa_feature_enabled_txg(spa_t *spa, spa_feature_t fid, 54 uint64_t *txg); 55 extern uint64_t spa_feature_refcount(spa_t *, spa_feature_t, uint64_t); 56 extern boolean_t spa_features_check(spa_t *, boolean_t, nvlist_t *, nvlist_t *); 57 58 /* 59 * These functions are only exported for zhack and zdb; normal callers should 60 * use the above interfaces. 61 */ 62 extern int feature_get_refcount(struct spa *, zfeature_info_t *, uint64_t *); 63 extern int feature_get_refcount_from_disk(spa_t *spa, zfeature_info_t *feature, 64 uint64_t *res); 65 extern void feature_enable_sync(struct spa *, zfeature_info_t *, 66 struct dmu_tx *); 67 extern void feature_sync(struct spa *, zfeature_info_t *, uint64_t, 68 struct dmu_tx *); 69 70 #ifdef __cplusplus 71 } 72 #endif 73 74 #endif /* _SYS_ZFEATURE_H */ 75