zfs/lib/libnvpair/include/sys/nvpair.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 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _SYS_NVPAIR_H
  27 #define _SYS_NVPAIR_H
  28
  29 #pragma ident   "%Z%%M% %I%     %E% SMI"
  30
  31 #include <sys/types.h>
  32 #include <sys/errno.h>
  33 #include <sys/va_list.h>
  34
  35 #if defined(_KERNEL) && !defined(_BOOT)
  36 #include <sys/kmem.h>
  37 #endif
  38
  39 #ifdef  __cplusplus
  40 extern "C" {
  41 #endif
  42
  43 typedef enum {
  44         DATA_TYPE_UNKNOWN = 0,
  45         DATA_TYPE_BOOLEAN,
  46         DATA_TYPE_BYTE,
  47         DATA_TYPE_INT16,
  48         DATA_TYPE_UINT16,
  49         DATA_TYPE_INT32,
  50         DATA_TYPE_UINT32,
  51         DATA_TYPE_INT64,
  52         DATA_TYPE_UINT64,
  53         DATA_TYPE_STRING,
  54         DATA_TYPE_BYTE_ARRAY,
  55         DATA_TYPE_INT16_ARRAY,
  56         DATA_TYPE_UINT16_ARRAY,
  57         DATA_TYPE_INT32_ARRAY,
  58         DATA_TYPE_UINT32_ARRAY,
  59         DATA_TYPE_INT64_ARRAY,
  60         DATA_TYPE_UINT64_ARRAY,
  61         DATA_TYPE_STRING_ARRAY,
  62         DATA_TYPE_HRTIME,
  63         DATA_TYPE_NVLIST,
  64         DATA_TYPE_NVLIST_ARRAY,
  65         DATA_TYPE_BOOLEAN_VALUE,
  66         DATA_TYPE_INT8,
  67         DATA_TYPE_UINT8,
  68         DATA_TYPE_BOOLEAN_ARRAY,
  69         DATA_TYPE_INT8_ARRAY,
  70 #if !defined(_KERNEL)
  71         DATA_TYPE_UINT8_ARRAY,
  72         DATA_TYPE_DOUBLE
  73 #else
  74         DATA_TYPE_UINT8_ARRAY
  75 #endif
  76 } data_type_t;
  77
  78 typedef struct nvpair {
  79         int32_t nvp_size;       /* size of this nvpair */
  80         int16_t nvp_name_sz;    /* length of name string */
  81         int16_t nvp_reserve;    /* not used */
  82         int32_t nvp_value_elem; /* number of elements for array types */
  83         data_type_t nvp_type;   /* type of value */
  84         /* name string */
  85         /* aligned ptr array for string arrays */
  86         /* aligned array of data for value */
  87 } nvpair_t;
  88
  89 /* nvlist header */
  90 typedef struct nvlist {
  91         int32_t         nvl_version;
  92         uint32_t        nvl_nvflag;     /* persistent flags */
  93         uint64_t        nvl_priv;       /* ptr to private data if not packed */
  94         uint32_t        nvl_flag;
  95         int32_t         nvl_pad;        /* currently not used, for alignment */
  96 } nvlist_t;
  97
  98 /* nvp implementation version */
  99 #define NV_VERSION      0
 100
 101 /* nvlist pack encoding */
 102 #define NV_ENCODE_NATIVE        0
 103 #define NV_ENCODE_XDR           1
 104
 105 /* nvlist persistent unique name flags, stored in nvl_nvflags */
 106 #define NV_UNIQUE_NAME          0x1
 107 #define NV_UNIQUE_NAME_TYPE     0x2
 108
 109 /* nvlist lookup pairs related flags */
 110 #define NV_FLAG_NOENTOK         0x1
 111
 112 /* convenience macros */
 113 #define NV_ALIGN(x)             (((ulong_t)(x) + 7ul) & ~7ul)
 114 #define NV_ALIGN4(x)            (((x) + 3) & ~3)
 115
 116 #define NVP_SIZE(nvp)           ((nvp)->nvp_size)
 117 #define NVP_NAME(nvp)           ((char *)(nvp) + sizeof (nvpair_t))
 118 #define NVP_TYPE(nvp)           ((nvp)->nvp_type)
 119 #define NVP_NELEM(nvp)          ((nvp)->nvp_value_elem)
 120 #define NVP_VALUE(nvp)          ((char *)(nvp) + NV_ALIGN(sizeof (nvpair_t) \
 121                                 + (nvp)->nvp_name_sz))
 122
 123 #define NVL_VERSION(nvl)        ((nvl)->nvl_version)
 124 #define NVL_SIZE(nvl)           ((nvl)->nvl_size)
 125 #define NVL_FLAG(nvl)           ((nvl)->nvl_flag)
 126
 127 /* NV allocator framework */
 128 typedef struct nv_alloc_ops nv_alloc_ops_t;
 129
 130 typedef struct nv_alloc {
 131         const nv_alloc_ops_t *nva_ops;
 132         void *nva_arg;
 133 } nv_alloc_t;
 134
 135 struct nv_alloc_ops {
 136         int (*nv_ao_init)(nv_alloc_t *, __va_list);
 137         void (*nv_ao_fini)(nv_alloc_t *);
 138         void *(*nv_ao_alloc)(nv_alloc_t *, size_t);
 139         void (*nv_ao_free)(nv_alloc_t *, void *, size_t);
 140         void (*nv_ao_reset)(nv_alloc_t *);
 141 };
 142
 143 extern const nv_alloc_ops_t *nv_fixed_ops;
 144 extern nv_alloc_t *nv_alloc_nosleep;
 145
 146 #if defined(_KERNEL) && !defined(_BOOT)
 147 extern nv_alloc_t *nv_alloc_sleep;
 148 #endif
 149
 150 int nv_alloc_init(nv_alloc_t *, const nv_alloc_ops_t *, /* args */ ...);
 151 void nv_alloc_reset(nv_alloc_t *);
 152 void nv_alloc_fini(nv_alloc_t *);
 153
 154 /* list management */
 155 int nvlist_alloc(nvlist_t **, uint_t, int);
 156 void nvlist_free(nvlist_t *);
 157 int nvlist_size(nvlist_t *, size_t *, int);
 158 int nvlist_pack(nvlist_t *, char **, size_t *, int, int);
 159 int nvlist_unpack(char *, size_t, nvlist_t **, int);
 160 int nvlist_dup(nvlist_t *, nvlist_t **, int);
 161 int nvlist_merge(nvlist_t *, nvlist_t *, int);
 162
 163 int nvlist_xalloc(nvlist_t **, uint_t, nv_alloc_t *);
 164 int nvlist_xpack(nvlist_t *, char **, size_t *, int, nv_alloc_t *);
 165 int nvlist_xunpack(char *, size_t, nvlist_t **, nv_alloc_t *);
 166 int nvlist_xdup(nvlist_t *, nvlist_t **, nv_alloc_t *);
 167 nv_alloc_t *nvlist_lookup_nv_alloc(nvlist_t *);
 168
 169 int nvlist_add_nvpair(nvlist_t *, nvpair_t *);
 170 int nvlist_add_boolean(nvlist_t *, const char *);
 171 int nvlist_add_boolean_value(nvlist_t *, const char *, boolean_t);
 172 int nvlist_add_byte(nvlist_t *, const char *, uchar_t);
 173 int nvlist_add_int8(nvlist_t *, const char *, int8_t);
 174 int nvlist_add_uint8(nvlist_t *, const char *, uint8_t);
 175 int nvlist_add_int16(nvlist_t *, const char *, int16_t);
 176 int nvlist_add_uint16(nvlist_t *, const char *, uint16_t);
 177 int nvlist_add_int32(nvlist_t *, const char *, int32_t);
 178 int nvlist_add_uint32(nvlist_t *, const char *, uint32_t);
 179 int nvlist_add_int64(nvlist_t *, const char *, int64_t);
 180 int nvlist_add_uint64(nvlist_t *, const char *, uint64_t);
 181 int nvlist_add_string(nvlist_t *, const char *, const char *);
 182 int nvlist_add_nvlist(nvlist_t *, const char *, nvlist_t *);
 183 int nvlist_add_boolean_array(nvlist_t *, const char *, boolean_t *, uint_t);
 184 int nvlist_add_byte_array(nvlist_t *, const char *, uchar_t *, uint_t);
 185 int nvlist_add_int8_array(nvlist_t *, const char *, int8_t *, uint_t);
 186 int nvlist_add_uint8_array(nvlist_t *, const char *, uint8_t *, uint_t);
 187 int nvlist_add_int16_array(nvlist_t *, const char *, int16_t *, uint_t);
 188 int nvlist_add_uint16_array(nvlist_t *, const char *, uint16_t *, uint_t);
 189 int nvlist_add_int32_array(nvlist_t *, const char *, int32_t *, uint_t);
 190 int nvlist_add_uint32_array(nvlist_t *, const char *, uint32_t *, uint_t);
 191 int nvlist_add_int64_array(nvlist_t *, const char *, int64_t *, uint_t);
 192 int nvlist_add_uint64_array(nvlist_t *, const char *, uint64_t *, uint_t);
 193 int nvlist_add_string_array(nvlist_t *, const char *, char *const *, uint_t);
 194 int nvlist_add_nvlist_array(nvlist_t *, const char *, nvlist_t **, uint_t);
 195 int nvlist_add_hrtime(nvlist_t *, const char *, hrtime_t);
 196 #if !defined(_KERNEL)
 197 int nvlist_add_double(nvlist_t *, const char *, double);
 198 #endif
 199
 200 int nvlist_remove(nvlist_t *, const char *, data_type_t);
 201 int nvlist_remove_all(nvlist_t *, const char *);
 202
 203 int nvlist_lookup_boolean(nvlist_t *, const char *);
 204 int nvlist_lookup_boolean_value(nvlist_t *, const char *, boolean_t *);
 205 int nvlist_lookup_byte(nvlist_t *, const char *, uchar_t *);
 206 int nvlist_lookup_int8(nvlist_t *, const char *, int8_t *);
 207 int nvlist_lookup_uint8(nvlist_t *, const char *, uint8_t *);
 208 int nvlist_lookup_int16(nvlist_t *, const char *, int16_t *);
 209 int nvlist_lookup_uint16(nvlist_t *, const char *, uint16_t *);
 210 int nvlist_lookup_int32(nvlist_t *, const char *, int32_t *);
 211 int nvlist_lookup_uint32(nvlist_t *, const char *, uint32_t *);
 212 int nvlist_lookup_int64(nvlist_t *, const char *, int64_t *);
 213 int nvlist_lookup_uint64(nvlist_t *, const char *, uint64_t *);
 214 int nvlist_lookup_string(nvlist_t *, const char *, char **);
 215 int nvlist_lookup_nvlist(nvlist_t *, const char *, nvlist_t **);
 216 int nvlist_lookup_boolean_array(nvlist_t *, const char *,
 217     boolean_t **, uint_t *);
 218 int nvlist_lookup_byte_array(nvlist_t *, const char *, uchar_t **, uint_t *);
 219 int nvlist_lookup_int8_array(nvlist_t *, const char *, int8_t **, uint_t *);
 220 int nvlist_lookup_uint8_array(nvlist_t *, const char *, uint8_t **, uint_t *);
 221 int nvlist_lookup_int16_array(nvlist_t *, const char *, int16_t **, uint_t *);
 222 int nvlist_lookup_uint16_array(nvlist_t *, const char *, uint16_t **, uint_t *);
 223 int nvlist_lookup_int32_array(nvlist_t *, const char *, int32_t **, uint_t *);
 224 int nvlist_lookup_uint32_array(nvlist_t *, const char *, uint32_t **, uint_t *);
 225 int nvlist_lookup_int64_array(nvlist_t *, const char *, int64_t **, uint_t *);
 226 int nvlist_lookup_uint64_array(nvlist_t *, const char *, uint64_t **, uint_t *);
 227 int nvlist_lookup_string_array(nvlist_t *, const char *, char ***, uint_t *);
 228 int nvlist_lookup_nvlist_array(nvlist_t *, const char *,
 229     nvlist_t ***, uint_t *);
 230 int nvlist_lookup_hrtime(nvlist_t *, const char *, hrtime_t *);
 231 int nvlist_lookup_pairs(nvlist_t *, int, ...);
 232 #if !defined(_KERNEL)
 233 int nvlist_lookup_double(nvlist_t *, const char *, double *);
 234 #endif
 235
 236 int nvlist_lookup_nvpair(nvlist_t *, const char *, nvpair_t **);
 237 int nvlist_lookup_nvpair_embedded_index(nvlist_t *, const char *, nvpair_t **,
 238     int *, char **);
 239 boolean_t nvlist_exists(nvlist_t *, const char *);
 240
 241 /* processing nvpair */
 242 nvpair_t *nvlist_next_nvpair(nvlist_t *, nvpair_t *);
 243 char *nvpair_name(nvpair_t *);
 244 data_type_t nvpair_type(nvpair_t *);
 245 int nvpair_type_is_array(nvpair_t *);
 246 int nvpair_value_boolean_value(nvpair_t *, boolean_t *);
 247 int nvpair_value_byte(nvpair_t *, uchar_t *);
 248 int nvpair_value_int8(nvpair_t *, int8_t *);
 249 int nvpair_value_uint8(nvpair_t *, uint8_t *);
 250 int nvpair_value_int16(nvpair_t *, int16_t *);
 251 int nvpair_value_uint16(nvpair_t *, uint16_t *);
 252 int nvpair_value_int32(nvpair_t *, int32_t *);
 253 int nvpair_value_uint32(nvpair_t *, uint32_t *);
 254 int nvpair_value_int64(nvpair_t *, int64_t *);
 255 int nvpair_value_uint64(nvpair_t *, uint64_t *);
 256 int nvpair_value_string(nvpair_t *, char **);
 257 int nvpair_value_nvlist(nvpair_t *, nvlist_t **);
 258 int nvpair_value_boolean_array(nvpair_t *, boolean_t **, uint_t *);
 259 int nvpair_value_byte_array(nvpair_t *, uchar_t **, uint_t *);
 260 int nvpair_value_int8_array(nvpair_t *, int8_t **, uint_t *);
 261 int nvpair_value_uint8_array(nvpair_t *, uint8_t **, uint_t *);
 262 int nvpair_value_int16_array(nvpair_t *, int16_t **, uint_t *);
 263 int nvpair_value_uint16_array(nvpair_t *, uint16_t **, uint_t *);
 264 int nvpair_value_int32_array(nvpair_t *, int32_t **, uint_t *);
 265 int nvpair_value_uint32_array(nvpair_t *, uint32_t **, uint_t *);
 266 int nvpair_value_int64_array(nvpair_t *, int64_t **, uint_t *);
 267 int nvpair_value_uint64_array(nvpair_t *, uint64_t **, uint_t *);
 268 int nvpair_value_string_array(nvpair_t *, char ***, uint_t *);
 269 int nvpair_value_nvlist_array(nvpair_t *, nvlist_t ***, uint_t *);
 270 int nvpair_value_hrtime(nvpair_t *, hrtime_t *);
 271 #if !defined(_KERNEL)
 272 int nvpair_value_double(nvpair_t *, double *);
 273 #endif
 274
 275 #ifdef  __cplusplus
 276 }
 277 #endif
 278
 279 #endif  /* _SYS_NVPAIR_H */