aboutsummaryrefslogtreecommitdiff
path: root/sys/contrib/openzfs/include/zfeature_common.h
blob: 76dd7ed57478aa1ddc78c66174e528805c6101b9 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
 * Copyright (c) 2017, Intel Corporation.
 */

#ifndef _ZFEATURE_COMMON_H
#define	_ZFEATURE_COMMON_H

#include <sys/fs/zfs.h>
#include <sys/inttypes.h>
#include <sys/types.h>

#ifdef	__cplusplus
extern "C" {
#endif

struct zfeature_info;

typedef enum spa_feature {
	SPA_FEATURE_NONE = -1,
	SPA_FEATURE_ASYNC_DESTROY,
	SPA_FEATURE_EMPTY_BPOBJ,
	SPA_FEATURE_LZ4_COMPRESS,
	SPA_FEATURE_MULTI_VDEV_CRASH_DUMP,
	SPA_FEATURE_SPACEMAP_HISTOGRAM,
	SPA_FEATURE_ENABLED_TXG,
	SPA_FEATURE_HOLE_BIRTH,
	SPA_FEATURE_EXTENSIBLE_DATASET,
	SPA_FEATURE_EMBEDDED_DATA,
	SPA_FEATURE_BOOKMARKS,
	SPA_FEATURE_FS_SS_LIMIT,
	SPA_FEATURE_LARGE_BLOCKS,
	SPA_FEATURE_LARGE_DNODE,
	SPA_FEATURE_SHA512,
	SPA_FEATURE_SKEIN,
	SPA_FEATURE_EDONR,
	SPA_FEATURE_USEROBJ_ACCOUNTING,
	SPA_FEATURE_ENCRYPTION,
	SPA_FEATURE_PROJECT_QUOTA,
	SPA_FEATURE_DEVICE_REMOVAL,
	SPA_FEATURE_OBSOLETE_COUNTS,
	SPA_FEATURE_POOL_CHECKPOINT,
	SPA_FEATURE_SPACEMAP_V2,
	SPA_FEATURE_ALLOCATION_CLASSES,
	SPA_FEATURE_RESILVER_DEFER,
	SPA_FEATURE_BOOKMARK_V2,
	SPA_FEATURE_REDACTION_BOOKMARKS,
	SPA_FEATURE_REDACTED_DATASETS,
	SPA_FEATURE_BOOKMARK_WRITTEN,
	SPA_FEATURE_LOG_SPACEMAP,
	SPA_FEATURE_LIVELIST,
	SPA_FEATURE_DEVICE_REBUILD,
	SPA_FEATURE_ZSTD_COMPRESS,
	SPA_FEATURE_DRAID,
	SPA_FEATURES
} spa_feature_t;

#define	SPA_FEATURE_DISABLED	(-1ULL)

typedef enum zfeature_flags {
	/* Can open pool readonly even if this feature is not supported. */
	ZFEATURE_FLAG_READONLY_COMPAT =		(1 << 0),
	/*
	 * Is this feature necessary to load the pool? i.e. do we need this
	 * feature to read the full feature list out of the MOS?
	 */
	ZFEATURE_FLAG_MOS =			(1 << 1),
	/* Activate this feature at the same time it is enabled. */
	ZFEATURE_FLAG_ACTIVATE_ON_ENABLE =	(1 << 2),
	/* Each dataset has a field set if it has ever used this feature. */
	ZFEATURE_FLAG_PER_DATASET =		(1 << 3)
} zfeature_flags_t;

typedef enum zfeature_type {
	ZFEATURE_TYPE_BOOLEAN,
	ZFEATURE_TYPE_UINT64_ARRAY,
	ZFEATURE_NUM_TYPES
} zfeature_type_t;

typedef struct zfeature_info {
	spa_feature_t fi_feature;
	const char *fi_uname;	/* User-facing feature name */
	const char *fi_guid;	/* On-disk feature identifier */
	const char *fi_desc;	/* Feature description */
	zfeature_flags_t fi_flags;
	boolean_t fi_zfs_mod_supported;	/* supported by running zfs module */
	zfeature_type_t fi_type; /* Only relevant for PER_DATASET features */
	/* array of dependencies, terminated by SPA_FEATURE_NONE */
	const spa_feature_t *fi_depends;
} zfeature_info_t;

typedef int (zfeature_func_t)(zfeature_info_t *, void *);

#define	ZFS_FEATURE_DEBUG

extern zfeature_info_t spa_feature_table[SPA_FEATURES];

extern boolean_t zfeature_is_valid_guid(const char *);

extern boolean_t zfeature_is_supported(const char *);
extern int zfeature_lookup_guid(const char *, spa_feature_t *);
extern int zfeature_lookup_name(const char *, spa_feature_t *);
extern boolean_t zfeature_depends_on(spa_feature_t, spa_feature_t);

extern void zpool_feature_init(void);

#ifdef	__cplusplus
}
#endif

#endif	/* _ZFEATURE_COMMON_H */