include/zfs_prop.h

   1 /*
   2  * CDDL HEADER START
   3  *
   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.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or https://opensource.org/licenses/CDDL-1.0.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  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]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _ZFS_PROP_H
  27 #define _ZFS_PROP_H extern __attribute__((visibility("default")))
  28
  29 #include <sys/fs/zfs.h>
  30 #include <sys/types.h>
  31 #include <sys/zfs_sysfs.h>
  32
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 /*
  38  * For index types (e.g. compression and checksum), we want the numeric value
  39  * in the kernel, but the string value in userland.
  40  */
  41 typedef enum {
  42         PROP_TYPE_NUMBER,       /* numeric value */
  43         PROP_TYPE_STRING,       /* string value */
  44         PROP_TYPE_INDEX         /* numeric value indexed by string */
  45 } zprop_type_t;
  46
  47 typedef enum {
  48         PROP_DEFAULT,
  49         PROP_READONLY,
  50         PROP_INHERIT,
  51         /*
  52          * ONETIME properties are a sort of conglomeration of READONLY
  53          * and INHERIT.  They can be set only during object creation,
  54          * after that they are READONLY.  If not explicitly set during
  55          * creation, they can be inherited. ONETIME_DEFAULT properties
  56          * work the same way, but they will default instead of
  57          * inheriting a value.
  58          */
  59         PROP_ONETIME,
  60         PROP_ONETIME_DEFAULT
  61 } zprop_attr_t;
  62
  63 typedef struct zfs_index {
  64         const char *pi_name;
  65         uint64_t pi_value;
  66 } zprop_index_t;
  67
  68 typedef struct {
  69         const char *pd_name;            /* human-readable property name */
  70         int pd_propnum;                 /* property number */
  71         zprop_type_t pd_proptype;       /* string, boolean, index, number */
  72         const char *pd_strdefault;      /* default for strings */
  73         uint64_t pd_numdefault;         /* for boolean / index / number */
  74         zprop_attr_t pd_attr;           /* default, readonly, inherit */
  75         int pd_types;                   /* bitfield of valid dataset types */
  76                                         /* fs | vol | snap; or pool */
  77         const char *pd_values;          /* string telling acceptable values */
  78         const char *pd_colname;         /* column header for "zfs list" */
  79         boolean_t pd_rightalign: 1;     /* column alignment for "zfs list" */
  80         boolean_t pd_visible: 1;        /* do we list this property with the */
  81                                         /* "zfs get" help message */
  82         boolean_t pd_zfs_mod_supported: 1; /* supported by running zfs module */
  83         boolean_t pd_always_flex: 1;    /* never fixed-width */
  84         const zprop_index_t *pd_table;  /* for index properties, a table */
  85                                         /* defining the possible values */
  86         size_t pd_table_size;           /* number of entries in pd_table[] */
  87 } zprop_desc_t;
  88
  89 /*
  90  * zfs dataset property functions
  91  */
  92 _ZFS_PROP_H void zfs_prop_init(void);
  93 _ZFS_PROP_H zprop_type_t zfs_prop_get_type(zfs_prop_t);
  94 _ZFS_PROP_H boolean_t zfs_prop_delegatable(zfs_prop_t prop);
  95 _ZFS_PROP_H zprop_desc_t *zfs_prop_get_table(void);
  96
  97 /*
  98  * zpool property functions
  99  */
 100 _ZFS_PROP_H void zpool_prop_init(void);
 101 _ZFS_PROP_H zprop_type_t zpool_prop_get_type(zpool_prop_t);
 102 _ZFS_PROP_H zprop_desc_t *zpool_prop_get_table(void);
 103
 104 /*
 105  * vdev property functions
 106  */
 107 _ZFS_PROP_H void vdev_prop_init(void);
 108 _ZFS_PROP_H zprop_type_t vdev_prop_get_type(vdev_prop_t prop);
 109 _ZFS_PROP_H zprop_desc_t *vdev_prop_get_table(void);
 110
 111 /*
 112  * Common routines to initialize property tables
 113  */
 114 _ZFS_PROP_H void zprop_register_impl(int, const char *, zprop_type_t, uint64_t,
 115     const char *, zprop_attr_t, int, const char *, const char *,
 116     boolean_t, boolean_t, boolean_t, const zprop_index_t *,
 117     const struct zfs_mod_supported_features *);
 118 _ZFS_PROP_H void zprop_register_string(int, const char *, const char *,
 119     zprop_attr_t attr, int, const char *, const char *,
 120     const struct zfs_mod_supported_features *);
 121 _ZFS_PROP_H void zprop_register_number(int, const char *, uint64_t,
 122     zprop_attr_t, int, const char *, const char *, boolean_t,
 123     const struct zfs_mod_supported_features *);
 124 _ZFS_PROP_H void zprop_register_index(int, const char *, uint64_t, zprop_attr_t,
 125     int, const char *, const char *, const zprop_index_t *,
 126     const struct zfs_mod_supported_features *);
 127 _ZFS_PROP_H void zprop_register_hidden(int, const char *, zprop_type_t,
 128     zprop_attr_t, int, const char *, boolean_t,
 129     const struct zfs_mod_supported_features *);
 130
 131 /*
 132  * Common routines for zfs and zpool property management
 133  */
 134 _ZFS_PROP_H int zprop_iter_common(zprop_func, void *, boolean_t, boolean_t,
 135     zfs_type_t);
 136 _ZFS_PROP_H int zprop_name_to_prop(const char *, zfs_type_t);
 137 _ZFS_PROP_H int zprop_string_to_index(int, const char *, uint64_t *,
 138     zfs_type_t);
 139 _ZFS_PROP_H int zprop_index_to_string(int, uint64_t, const char **,
 140     zfs_type_t);
 141 _ZFS_PROP_H uint64_t zprop_random_value(int, uint64_t, zfs_type_t);
 142 _ZFS_PROP_H const char *zprop_values(int, zfs_type_t);
 143 _ZFS_PROP_H size_t zprop_width(int, boolean_t *, zfs_type_t);
 144 _ZFS_PROP_H boolean_t zprop_valid_for_type(int, zfs_type_t, boolean_t);
 145 _ZFS_PROP_H int zprop_valid_char(char c);
 146
 147 #ifdef  __cplusplus
 148 }
 149 #endif
 150
 151 #endif  /* _ZFS_PROP_H */