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) 2011, 2018 by Delphix. All rights reserved. 24 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 25 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 26 * Copyright (c) 2014 Integros [integros.com] 27 * Copyright (c) 2017, Intel Corporation. 28 */ 29 30 #ifndef _ZFEATURE_COMMON_H 31 #define _ZFEATURE_COMMON_H 32 33 #include <sys/fs/zfs.h> 34 #include <sys/inttypes.h> 35 #include <sys/types.h> 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 struct zfeature_info; 42 43 typedef enum spa_feature { 44 SPA_FEATURE_NONE = -1, 45 SPA_FEATURE_ASYNC_DESTROY, 46 SPA_FEATURE_EMPTY_BPOBJ, 47 SPA_FEATURE_LZ4_COMPRESS, 48 SPA_FEATURE_MULTI_VDEV_CRASH_DUMP, 49 SPA_FEATURE_SPACEMAP_HISTOGRAM, 50 SPA_FEATURE_ENABLED_TXG, 51 SPA_FEATURE_HOLE_BIRTH, 52 SPA_FEATURE_EXTENSIBLE_DATASET, 53 SPA_FEATURE_EMBEDDED_DATA, 54 SPA_FEATURE_BOOKMARKS, 55 SPA_FEATURE_FS_SS_LIMIT, 56 SPA_FEATURE_LARGE_BLOCKS, 57 SPA_FEATURE_LARGE_DNODE, 58 SPA_FEATURE_SHA512, 59 SPA_FEATURE_SKEIN, 60 SPA_FEATURE_EDONR, 61 SPA_FEATURE_DEVICE_REMOVAL, 62 SPA_FEATURE_OBSOLETE_COUNTS, 63 SPA_FEATURE_POOL_CHECKPOINT, 64 SPA_FEATURE_SPACEMAP_V2, 65 SPA_FEATURE_ALLOCATION_CLASSES, 66 SPA_FEATURE_RESILVER_DEFER, 67 SPA_FEATURE_ENCRYPTION, 68 SPA_FEATURE_BOOKMARK_V2, 69 SPA_FEATURE_USEROBJ_ACCOUNTING, 70 SPA_FEATURE_PROJECT_QUOTA, 71 SPA_FEATURE_LOG_SPACEMAP, 72 SPA_FEATURES 73 } spa_feature_t; 74 75 #define SPA_FEATURE_DISABLED (-1ULL) 76 77 typedef enum zfeature_flags { 78 /* Can open pool readonly even if this feature is not supported. */ 79 ZFEATURE_FLAG_READONLY_COMPAT = (1 << 0), 80 /* 81 * Is this feature necessary to load the pool? i.e. do we need this 82 * feature to read the full feature list out of the MOS? 83 */ 84 ZFEATURE_FLAG_MOS = (1 << 1), 85 /* Activate this feature at the same time it is enabled. */ 86 ZFEATURE_FLAG_ACTIVATE_ON_ENABLE = (1 << 2), 87 /* Each dataset has a field set if it has ever used this feature. */ 88 ZFEATURE_FLAG_PER_DATASET = (1 << 3) 89 } zfeature_flags_t; 90 91 typedef enum zfeature_type { 92 ZFEATURE_TYPE_BOOLEAN, 93 ZFEATURE_TYPE_UINT64_ARRAY, 94 ZFEATURE_NUM_TYPES 95 } zfeature_type_t; 96 97 typedef struct zfeature_info { 98 spa_feature_t fi_feature; 99 const char *fi_uname; /* User-facing feature name */ 100 const char *fi_guid; /* On-disk feature identifier */ 101 const char *fi_desc; /* Feature description */ 102 zfeature_flags_t fi_flags; 103 zfeature_type_t fi_type; /* Only relevant for PER_DATASET features */ 104 /* array of dependencies, terminated by SPA_FEATURE_NONE */ 105 const spa_feature_t *fi_depends; 106 } zfeature_info_t; 107 108 typedef int (zfeature_func_t)(zfeature_info_t *, void *); 109 110 #define ZFS_FEATURE_DEBUG 111 112 extern zfeature_info_t spa_feature_table[SPA_FEATURES]; 113 114 extern boolean_t zfeature_is_valid_guid(const char *); 115 116 extern boolean_t zfeature_is_supported(const char *); 117 extern int zfeature_lookup_name(const char *, spa_feature_t *); 118 extern boolean_t zfeature_depends_on(spa_feature_t, spa_feature_t); 119 120 extern void zpool_feature_init(void); 121 122 #ifdef __cplusplus 123 } 124 #endif 125 126 #endif /* _ZFEATURE_COMMON_H */ 127