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4171 clean up spa_feature_*() interfaces
4172 implement extensible_dataset feature for use by other zpool features
Reviewed by: Max Grossman <max.grossman@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>


  21 
  22 /*
  23  * Copyright (c) 2013 by Delphix. All rights reserved.
  24  * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
  25  * Copyright (c) 2013, Joyent, Inc. All rights reserved.
  26  */
  27 
  28 #ifndef _ZFEATURE_COMMON_H
  29 #define _ZFEATURE_COMMON_H
  30 
  31 #include <sys/fs/zfs.h>
  32 #include <sys/inttypes.h>
  33 #include <sys/types.h>
  34 
  35 #ifdef  __cplusplus
  36 extern "C" {
  37 #endif
  38 
  39 struct zfeature_info;
  40 











  41 typedef struct zfeature_info {

  42         const char *fi_uname;   /* User-facing feature name */
  43         const char *fi_guid;    /* On-disk feature identifier */
  44         const char *fi_desc;    /* Feature description */
  45         boolean_t fi_can_readonly; /* Can open pool readonly w/o support? */
  46         boolean_t fi_mos;       /* Is the feature necessary to read the MOS? */
  47         struct zfeature_info **fi_depends; /* array; null terminated */

  48 } zfeature_info_t;
  49 
  50 typedef int (zfeature_func_t)(zfeature_info_t *fi, void *arg);
  51 
  52 #define ZFS_FEATURE_DEBUG
  53 
  54 enum spa_feature {
  55         SPA_FEATURE_ASYNC_DESTROY,
  56         SPA_FEATURE_EMPTY_BPOBJ,
  57         SPA_FEATURE_LZ4_COMPRESS,
  58         SPA_FEATURE_MULTI_VDEV_CRASH_DUMP,
  59         SPA_FEATURE_SPACEMAP_HISTOGRAM,
  60         SPA_FEATURES
  61 } spa_feature_t;
  62 
  63 extern zfeature_info_t spa_feature_table[SPA_FEATURES];
  64 
  65 extern boolean_t zfeature_is_valid_guid(const char *);
  66 
  67 extern boolean_t zfeature_is_supported(const char *);
  68 extern int zfeature_lookup_guid(const char *, zfeature_info_t **res);
  69 extern int zfeature_lookup_name(const char *, zfeature_info_t **res);
  70 
  71 extern void zpool_feature_init(void);
  72 
  73 #ifdef  __cplusplus
  74 }
  75 #endif
  76 
  77 #endif  /* _ZFEATURE_COMMON_H */


  21 
  22 /*
  23  * Copyright (c) 2013 by Delphix. All rights reserved.
  24  * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
  25  * Copyright (c) 2013, Joyent, Inc. All rights reserved.
  26  */
  27 
  28 #ifndef _ZFEATURE_COMMON_H
  29 #define _ZFEATURE_COMMON_H
  30 
  31 #include <sys/fs/zfs.h>
  32 #include <sys/inttypes.h>
  33 #include <sys/types.h>
  34 
  35 #ifdef  __cplusplus
  36 extern "C" {
  37 #endif
  38 
  39 struct zfeature_info;
  40 
  41 typedef enum spa_feature {
  42         SPA_FEATURE_NONE = -1,
  43         SPA_FEATURE_ASYNC_DESTROY,
  44         SPA_FEATURE_EMPTY_BPOBJ,
  45         SPA_FEATURE_LZ4_COMPRESS,
  46         SPA_FEATURE_MULTI_VDEV_CRASH_DUMP,
  47         SPA_FEATURE_SPACEMAP_HISTOGRAM,
  48         SPA_FEATURE_EXTENSIBLE_DATASET,
  49         SPA_FEATURES
  50 } spa_feature_t;
  51 
  52 typedef struct zfeature_info {
  53         spa_feature_t fi_feature;
  54         const char *fi_uname;   /* User-facing feature name */
  55         const char *fi_guid;    /* On-disk feature identifier */
  56         const char *fi_desc;    /* Feature description */
  57         boolean_t fi_can_readonly; /* Can open pool readonly w/o support? */
  58         boolean_t fi_mos;       /* Is the feature necessary to read the MOS? */
  59         /* array of dependencies, terminated by SPA_FEATURE_NONE */
  60         const spa_feature_t *fi_depends;
  61 } zfeature_info_t;
  62 
  63 typedef int (zfeature_func_t)(zfeature_info_t *fi, void *arg);
  64 
  65 #define ZFS_FEATURE_DEBUG
  66 









  67 extern zfeature_info_t spa_feature_table[SPA_FEATURES];
  68 
  69 extern boolean_t zfeature_is_valid_guid(const char *);
  70 
  71 extern boolean_t zfeature_is_supported(const char *);
  72 extern int zfeature_lookup_name(const char *name, spa_feature_t *res);

  73 
  74 extern void zpool_feature_init(void);
  75 
  76 #ifdef  __cplusplus
  77 }
  78 #endif
  79 
  80 #endif  /* _ZFEATURE_COMMON_H */