FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/zfeature_common.h

     /*
      * 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 https://opensource.org/licenses/CDDL-1.0.
     * 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 extern __attribute__((visibility("default")))
    
    #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_FEATURE_ZILSAXATTR,
            SPA_FEATURE_HEAD_ERRLOG,
            SPA_FEATURE_BLAKE3,
            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
   
   _ZFEATURE_COMMON_H zfeature_info_t spa_feature_table[SPA_FEATURES];
   _ZFEATURE_COMMON_H boolean_t zfeature_checks_disable;
   
   _ZFEATURE_COMMON_H boolean_t zfeature_is_valid_guid(const char *);
   
   _ZFEATURE_COMMON_H boolean_t zfeature_is_supported(const char *);
   _ZFEATURE_COMMON_H int zfeature_lookup_guid(const char *, spa_feature_t *);
   _ZFEATURE_COMMON_H int zfeature_lookup_name(const char *, spa_feature_t *);
   _ZFEATURE_COMMON_H boolean_t zfeature_depends_on(spa_feature_t, spa_feature_t);
   
   _ZFEATURE_COMMON_H void zpool_feature_init(void);
   
   #ifdef  __cplusplus
   }
   #endif
   
   #endif  /* _ZFEATURE_COMMON_H */

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