/usr/include/libzfs/zfeature_common.h is in libzfslinux-dev 0.6.5.6-0ubuntu8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* 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) 2013 by Delphix. All rights reserved.
* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
*/
#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_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_FEATURES
} spa_feature_t;
#define SPA_FEATURE_DISABLED (-1ULL)
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 */
boolean_t fi_can_readonly; /* Can open pool readonly w/o support? */
boolean_t fi_mos; /* Is the feature necessary to read the MOS? */
/* Activate this feature at the same time it is enabled */
boolean_t fi_activate_on_enable;
/* 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_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 */
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