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