1236884Smm/* 2236884Smm * CDDL HEADER START 3236884Smm * 4236884Smm * The contents of this file are subject to the terms of the 5236884Smm * Common Development and Distribution License (the "License"). 6236884Smm * You may not use this file except in compliance with the License. 7236884Smm * 8236884Smm * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9236884Smm * or http://www.opensolaris.org/os/licensing. 10236884Smm * See the License for the specific language governing permissions 11236884Smm * and limitations under the License. 12236884Smm * 13236884Smm * When distributing Covered Code, include this CDDL HEADER in each 14236884Smm * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15236884Smm * If applicable, add the following below this CDDL HEADER, with the 16236884Smm * fields enclosed by brackets "[]" replaced with your own identifying 17236884Smm * information: Portions Copyright [yyyy] [name of copyright owner] 18236884Smm * 19236884Smm * CDDL HEADER END 20236884Smm */ 21236884Smm 22236884Smm/* 23288572Smav * Copyright (c) 2011, 2015 by Delphix. All rights reserved. 24246586Sdelphij * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 25255750Sdelphij * Copyright (c) 2013, Joyent, Inc. All rights reserved. 26236884Smm */ 27236884Smm 28236884Smm#ifndef _ZFEATURE_COMMON_H 29236884Smm#define _ZFEATURE_COMMON_H 30236884Smm 31236884Smm#include <sys/fs/zfs.h> 32236884Smm#include <sys/types.h> 33236884Smm 34236884Smm#ifdef __cplusplus 35236884Smmextern "C" { 36236884Smm#endif 37236884Smm 38236884Smmstruct zfeature_info; 39236884Smm 40263390Sdelphijtypedef enum spa_feature { 41263390Sdelphij SPA_FEATURE_NONE = -1, 42263390Sdelphij SPA_FEATURE_ASYNC_DESTROY, 43263390Sdelphij SPA_FEATURE_EMPTY_BPOBJ, 44263390Sdelphij SPA_FEATURE_LZ4_COMPRESS, 45263390Sdelphij SPA_FEATURE_MULTI_VDEV_CRASH_DUMP, 46263390Sdelphij SPA_FEATURE_SPACEMAP_HISTOGRAM, 47263397Sdelphij SPA_FEATURE_ENABLED_TXG, 48263397Sdelphij SPA_FEATURE_HOLE_BIRTH, 49263390Sdelphij SPA_FEATURE_EXTENSIBLE_DATASET, 50268649Sdelphij SPA_FEATURE_EMBEDDED_DATA, 51263407Sdelphij SPA_FEATURE_BOOKMARKS, 52265744Sdelphij SPA_FEATURE_FS_SS_LIMIT, 53276081Sdelphij SPA_FEATURE_LARGE_BLOCKS, 54290757Smav#ifdef illumos 55290757Smav SPA_FEATURE_SHA512, 56290757Smav SPA_FEATURE_SKEIN, 57290757Smav SPA_FEATURE_EDONR, 58290757Smav#endif 59263390Sdelphij SPA_FEATURES 60263390Sdelphij} spa_feature_t; 61263390Sdelphij 62263397Sdelphij#define SPA_FEATURE_DISABLED (-1ULL) 63263397Sdelphij 64288572Smavtypedef enum zfeature_flags { 65288572Smav /* Can open pool readonly even if this feature is not supported. */ 66288572Smav ZFEATURE_FLAG_READONLY_COMPAT = (1 << 0), 67288572Smav /* Is this feature necessary to read the MOS? */ 68288572Smav ZFEATURE_FLAG_MOS = (1 << 1), 69288572Smav /* Activate this feature at the same time it is enabled. */ 70288572Smav ZFEATURE_FLAG_ACTIVATE_ON_ENABLE = (1 << 2), 71288572Smav /* Each dataset has a field set if it has ever used this feature. */ 72288572Smav ZFEATURE_FLAG_PER_DATASET = (1 << 3) 73288572Smav} zfeature_flags_t; 74288572Smav 75236884Smmtypedef struct zfeature_info { 76263390Sdelphij spa_feature_t fi_feature; 77236884Smm const char *fi_uname; /* User-facing feature name */ 78236884Smm const char *fi_guid; /* On-disk feature identifier */ 79236884Smm const char *fi_desc; /* Feature description */ 80288572Smav zfeature_flags_t fi_flags; 81263390Sdelphij /* array of dependencies, terminated by SPA_FEATURE_NONE */ 82263390Sdelphij const spa_feature_t *fi_depends; 83236884Smm} zfeature_info_t; 84236884Smm 85268649Sdelphijtypedef int (zfeature_func_t)(zfeature_info_t *, void *); 86236884Smm 87236884Smm#define ZFS_FEATURE_DEBUG 88236884Smm 89236884Smmextern zfeature_info_t spa_feature_table[SPA_FEATURES]; 90236884Smm 91236884Smmextern boolean_t zfeature_is_valid_guid(const char *); 92236884Smm 93236884Smmextern boolean_t zfeature_is_supported(const char *); 94268649Sdelphijextern int zfeature_lookup_name(const char *, spa_feature_t *); 95268649Sdelphijextern boolean_t zfeature_depends_on(spa_feature_t, spa_feature_t); 96236884Smm 97236884Smmextern void zpool_feature_init(void); 98236884Smm 99236884Smm#ifdef __cplusplus 100236884Smm} 101236884Smm#endif 102236884Smm 103236884Smm#endif /* _ZFEATURE_COMMON_H */ 104