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.
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.
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]
23 * Copyright (c) 2012 by Delphix. All rights reserved.
24 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
27 #ifndef _ZFEATURE_COMMON_H
28 #define _ZFEATURE_COMMON_H
30 #include <sys/fs/zfs.h>
31 #include <sys/inttypes.h>
32 #include <sys/types.h>
40 typedef struct zfeature_info
{
41 const char *fi_uname
; /* User-facing feature name */
42 const char *fi_guid
; /* On-disk feature identifier */
43 const char *fi_desc
; /* Feature description */
44 boolean_t fi_can_readonly
; /* Can open pool readonly w/o support? */
45 boolean_t fi_mos
; /* Is the feature necessary to read the MOS? */
46 struct zfeature_info
**fi_depends
; /* array; null terminated */
49 typedef int (zfeature_func_t
)(zfeature_info_t
*fi
, void *arg
);
51 #define ZFS_FEATURE_DEBUG
53 typedef enum spa_feature
{
54 SPA_FEATURE_ASYNC_DESTROY
,
55 SPA_FEATURE_EMPTY_BPOBJ
,
56 SPA_FEATURE_LZ4_COMPRESS
,
60 extern zfeature_info_t spa_feature_table
[SPA_FEATURES
];
62 extern boolean_t
zfeature_is_valid_guid(const char *);
64 extern boolean_t
zfeature_is_supported(const char *);
65 extern int zfeature_lookup_guid(const char *, zfeature_info_t
**res
);
66 extern int zfeature_lookup_name(const char *, zfeature_info_t
**res
);
68 extern void zpool_feature_init(void);
74 #endif /* _ZFEATURE_COMMON_H */