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 http://www.opensolaris.org/os/licensing.
  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
  28
  29 #include <sys/fs/zfs.h>
  30 #include <sys/types.h>
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /*
  37  * For index types (e.g. compression and checksum), we want the numeric value
  38  * in the kernel, but the string value in userland.
  39  */
  40 typedef enum {
  41         PROP_TYPE_NUMBER,       /* numeric value */
  42         PROP_TYPE_STRING,       /* string value */
  43         PROP_TYPE_INDEX         /* numeric value indexed by string */
  44 } zprop_type_t;
  45
  46 typedef enum {
  47         PROP_DEFAULT,
  48         PROP_READONLY,
  49         PROP_INHERIT,
  50         /*
  51          * ONETIME properties are a sort of conglomeration of READONLY
  52          * and INHERIT.  They can be set only during object creation,
  53          * after that they are READONLY.  If not explicitly set during
  54          * creation, they can be inherited. ONETIME_DEFAULT properties
  55          * work the same way, but they will default instead of
  56          * inheriting a value.
  57          */
  58         PROP_ONETIME,
  59         PROP_ONETIME_DEFAULT
  60 } zprop_attr_t;
  61
  62 typedef struct zfs_index {
  63         const char *pi_name;
  64         uint64_t pi_value;
  65 } zprop_index_t;
  66
  67 typedef struct {
  68         const char *pd_name;            /* human-readable property name */
  69         int pd_propnum;                 /* property number */
  70         zprop_type_t pd_proptype;       /* string, boolean, index, number */
  71         const char *pd_strdefault;      /* default for strings */
  72         uint64_t pd_numdefault;         /* for boolean / index / number */
  73         zprop_attr_t pd_attr;           /* default, readonly, inherit */
  74         int pd_types;                   /* bitfield of valid dataset types */
  75                                         /* fs | vol | snap; or pool */
  76         const char *pd_values;          /* string telling acceptable values */
  77         const char *pd_colname;         /* column header for "zfs list" */
  78         boolean_t pd_rightalign;        /* column alignment for "zfs list" */
  79         boolean_t pd_visible;           /* do we list this property with the */
  80                                         /* "zfs get" help message */
  81         boolean_t pd_zfs_mod_supported; /* supported by running zfs module */
  82         const zprop_index_t *pd_table;  /* for index properties, a table */
  83                                         /* defining the possible values */
  84         size_t pd_table_size;           /* number of entries in pd_table[] */
  85 } zprop_desc_t;
  86
  87 /*
  88  * zfs dataset property functions
  89  */
  90 void zfs_prop_init(void);
  91 zprop_type_t zfs_prop_get_type(zfs_prop_t);
  92 boolean_t zfs_prop_delegatable(zfs_prop_t prop);
  93 zprop_desc_t *zfs_prop_get_table(void);
  94
  95 /*
  96  * zpool property functions
  97  */
  98 void zpool_prop_init(void);
  99 zprop_type_t zpool_prop_get_type(zpool_prop_t);
 100 zprop_desc_t *zpool_prop_get_table(void);
 101
 102 /*
 103  * Common routines to initialize property tables
 104  */
 105 void zprop_register_impl(int, const char *, zprop_type_t, uint64_t,
 106     const char *, zprop_attr_t, int, const char *, const char *,
 107     boolean_t, boolean_t, const zprop_index_t *);
 108 void zprop_register_string(int, const char *, const char *,
 109     zprop_attr_t attr, int, const char *, const char *);
 110 void zprop_register_number(int, const char *, uint64_t, zprop_attr_t, int,
 111     const char *, const char *);
 112 void zprop_register_index(int, const char *, uint64_t, zprop_attr_t, int,
 113     const char *, const char *, const zprop_index_t *);
 114 void zprop_register_hidden(int, const char *, zprop_type_t, zprop_attr_t,
 115     int, const char *);
 116
 117 /*
 118  * Common routines for zfs and zpool property management
 119  */
 120 int zprop_iter_common(zprop_func, void *, boolean_t, boolean_t, zfs_type_t);
 121 int zprop_name_to_prop(const char *, zfs_type_t);
 122 int zprop_string_to_index(int, const char *, uint64_t *, zfs_type_t);
 123 int zprop_index_to_string(int, uint64_t, const char **, zfs_type_t);
 124 uint64_t zprop_random_value(int, uint64_t, zfs_type_t);
 125 const char *zprop_values(int, zfs_type_t);
 126 size_t zprop_width(int, boolean_t *, zfs_type_t);
 127 boolean_t zprop_valid_for_type(int, zfs_type_t, boolean_t);
 128
 129 #ifdef  __cplusplus
 130 }
 131 #endif
 132
 133 #endif  /* _ZFS_PROP_H */