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9ae529ec CS |
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 | /* | |
241b5415 | 23 | * Copyright (c) 2011, 2015 by Delphix. All rights reserved. |
9759c60f | 24 | * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. |
9ae529ec CS |
25 | */ |
26 | ||
27 | #ifndef _ZFEATURE_COMMON_H | |
28 | #define _ZFEATURE_COMMON_H | |
29 | ||
30 | #include <sys/fs/zfs.h> | |
31 | #include <sys/inttypes.h> | |
32 | #include <sys/types.h> | |
33 | ||
34 | #ifdef __cplusplus | |
35 | extern "C" { | |
36 | #endif | |
37 | ||
38 | struct zfeature_info; | |
39 | ||
fa86b5db MA |
40 | typedef 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_SPACEMAP_HISTOGRAM, | |
b0bc7a84 MG |
46 | SPA_FEATURE_ENABLED_TXG, |
47 | SPA_FEATURE_HOLE_BIRTH, | |
fa86b5db | 48 | SPA_FEATURE_EXTENSIBLE_DATASET, |
9b67f605 | 49 | SPA_FEATURE_EMBEDDED_DATA, |
da536844 | 50 | SPA_FEATURE_BOOKMARKS, |
788eb90c | 51 | SPA_FEATURE_FS_SS_LIMIT, |
f1512ee6 | 52 | SPA_FEATURE_LARGE_BLOCKS, |
50c957f7 | 53 | SPA_FEATURE_LARGE_DNODE, |
3c67d83a TH |
54 | SPA_FEATURE_SHA512, |
55 | SPA_FEATURE_SKEIN, | |
56 | SPA_FEATURE_EDONR, | |
fa86b5db MA |
57 | SPA_FEATURES |
58 | } spa_feature_t; | |
59 | ||
b0bc7a84 MG |
60 | #define SPA_FEATURE_DISABLED (-1ULL) |
61 | ||
241b5415 MA |
62 | typedef enum zfeature_flags { |
63 | /* Can open pool readonly even if this feature is not supported. */ | |
64 | ZFEATURE_FLAG_READONLY_COMPAT = (1 << 0), | |
65 | /* Is this feature necessary to read the MOS? */ | |
66 | ZFEATURE_FLAG_MOS = (1 << 1), | |
67 | /* Activate this feature at the same time it is enabled. */ | |
68 | ZFEATURE_FLAG_ACTIVATE_ON_ENABLE = (1 << 2), | |
69 | /* Each dataset has a field set if it has ever used this feature. */ | |
70 | ZFEATURE_FLAG_PER_DATASET = (1 << 3) | |
71 | } zfeature_flags_t; | |
72 | ||
9ae529ec | 73 | typedef struct zfeature_info { |
fa86b5db | 74 | spa_feature_t fi_feature; |
9ae529ec CS |
75 | const char *fi_uname; /* User-facing feature name */ |
76 | const char *fi_guid; /* On-disk feature identifier */ | |
77 | const char *fi_desc; /* Feature description */ | |
241b5415 | 78 | zfeature_flags_t fi_flags; |
fa86b5db MA |
79 | /* array of dependencies, terminated by SPA_FEATURE_NONE */ |
80 | const spa_feature_t *fi_depends; | |
9ae529ec CS |
81 | } zfeature_info_t; |
82 | ||
9b67f605 | 83 | typedef int (zfeature_func_t)(zfeature_info_t *, void *); |
9ae529ec CS |
84 | |
85 | #define ZFS_FEATURE_DEBUG | |
86 | ||
9ae529ec CS |
87 | extern zfeature_info_t spa_feature_table[SPA_FEATURES]; |
88 | ||
89 | extern boolean_t zfeature_is_valid_guid(const char *); | |
90 | ||
91 | extern boolean_t zfeature_is_supported(const char *); | |
9b67f605 MA |
92 | extern int zfeature_lookup_name(const char *, spa_feature_t *); |
93 | extern boolean_t zfeature_depends_on(spa_feature_t, spa_feature_t); | |
9ae529ec CS |
94 | |
95 | extern void zpool_feature_init(void); | |
96 | ||
97 | #ifdef __cplusplus | |
98 | } | |
99 | #endif | |
100 | ||
101 | #endif /* _ZFEATURE_COMMON_H */ |