zfeature_common.h revision 290757
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, 2015 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 */ 27 28#ifndef _ZFEATURE_COMMON_H 29#define _ZFEATURE_COMMON_H 30 31#include <sys/fs/zfs.h> 32#include <sys/types.h> 33 34#ifdef __cplusplus 35extern "C" { 36#endif 37 38struct zfeature_info; 39 40typedef enum spa_feature { 41 SPA_FEATURE_NONE = -1, 42 SPA_FEATURE_ASYNC_DESTROY, 43 SPA_FEATURE_EMPTY_BPOBJ, 44 SPA_FEATURE_LZ4_COMPRESS, 45 SPA_FEATURE_MULTI_VDEV_CRASH_DUMP, 46 SPA_FEATURE_SPACEMAP_HISTOGRAM, 47 SPA_FEATURE_ENABLED_TXG, 48 SPA_FEATURE_HOLE_BIRTH, 49 SPA_FEATURE_EXTENSIBLE_DATASET, 50 SPA_FEATURE_EMBEDDED_DATA, 51 SPA_FEATURE_BOOKMARKS, 52 SPA_FEATURE_FS_SS_LIMIT, 53 SPA_FEATURE_LARGE_BLOCKS, 54#ifdef illumos 55 SPA_FEATURE_SHA512, 56 SPA_FEATURE_SKEIN, 57 SPA_FEATURE_EDONR, 58#endif 59 SPA_FEATURES 60} spa_feature_t; 61 62#define SPA_FEATURE_DISABLED (-1ULL) 63 64typedef enum zfeature_flags { 65 /* Can open pool readonly even if this feature is not supported. */ 66 ZFEATURE_FLAG_READONLY_COMPAT = (1 << 0), 67 /* Is this feature necessary to read the MOS? */ 68 ZFEATURE_FLAG_MOS = (1 << 1), 69 /* Activate this feature at the same time it is enabled. */ 70 ZFEATURE_FLAG_ACTIVATE_ON_ENABLE = (1 << 2), 71 /* Each dataset has a field set if it has ever used this feature. */ 72 ZFEATURE_FLAG_PER_DATASET = (1 << 3) 73} zfeature_flags_t; 74 75typedef struct zfeature_info { 76 spa_feature_t fi_feature; 77 const char *fi_uname; /* User-facing feature name */ 78 const char *fi_guid; /* On-disk feature identifier */ 79 const char *fi_desc; /* Feature description */ 80 zfeature_flags_t fi_flags; 81 /* array of dependencies, terminated by SPA_FEATURE_NONE */ 82 const spa_feature_t *fi_depends; 83} zfeature_info_t; 84 85typedef int (zfeature_func_t)(zfeature_info_t *, void *); 86 87#define ZFS_FEATURE_DEBUG 88 89extern zfeature_info_t spa_feature_table[SPA_FEATURES]; 90 91extern boolean_t zfeature_is_valid_guid(const char *); 92 93extern boolean_t zfeature_is_supported(const char *); 94extern int zfeature_lookup_name(const char *, spa_feature_t *); 95extern boolean_t zfeature_depends_on(spa_feature_t, spa_feature_t); 96 97extern void zpool_feature_init(void); 98 99#ifdef __cplusplus 100} 101#endif 102 103#endif /* _ZFEATURE_COMMON_H */ 104