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      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 2007 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	"@(#)nvpair.h	1.15	07/10/26 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 	DATA_TYPE_UINT8_ARRAY
     71 } data_type_t;
     72 
     73 typedef struct nvpair {
     74 	int32_t nvp_size;	/* size of this nvpair */
     75 	int16_t	nvp_name_sz;	/* length of name string */
     76 	int16_t	nvp_reserve;	/* not used */
     77 	int32_t	nvp_value_elem;	/* number of elements for array types */
     78 	data_type_t nvp_type;	/* type of value */
     79 	/* name string */
     80 	/* aligned ptr array for string arrays */
     81 	/* aligned array of data for value */
     82 } nvpair_t;
     83 
     84 /* nvlist header */
     85 typedef struct nvlist {
     86 	int32_t		nvl_version;
     87 	uint32_t	nvl_nvflag;	/* persistent flags */
     88 	uint64_t	nvl_priv;	/* ptr to private data if not packed */
     89 	uint32_t	nvl_flag;
     90 	int32_t		nvl_pad;	/* currently not used, for alignment */
     91 } nvlist_t;
     92 
     93 /* nvp implementation version */
     94 #define	NV_VERSION	0
     95 
     96 /* nvlist pack encoding */
     97 #define	NV_ENCODE_NATIVE	0
     98 #define	NV_ENCODE_XDR		1
     99 
    100 /* nvlist persistent unique name flags, stored in nvl_nvflags */
    101 #define	NV_UNIQUE_NAME		0x1
    102 #define	NV_UNIQUE_NAME_TYPE	0x2
    103 
    104 /* nvlist lookup pairs related flags */
    105 #define	NV_FLAG_NOENTOK		0x1
    106 
    107 /* convenience macros */
    108 #define	NV_ALIGN(x)		(((ulong_t)(x) + 7ul) & ~7ul)
    109 #define	NV_ALIGN4(x)		(((x) + 3) & ~3)
    110 
    111 #define	NVP_SIZE(nvp)		((nvp)->nvp_size)
    112 #define	NVP_NAME(nvp)		((char *)(nvp) + sizeof (nvpair_t))
    113 #define	NVP_TYPE(nvp)		((nvp)->nvp_type)
    114 #define	NVP_NELEM(nvp)		((nvp)->nvp_value_elem)
    115 #define	NVP_VALUE(nvp)		((char *)(nvp) + NV_ALIGN(sizeof (nvpair_t) \
    116 				+ (nvp)->nvp_name_sz))
    117 
    118 #define	NVL_VERSION(nvl)	((nvl)->nvl_version)
    119 #define	NVL_SIZE(nvl)		((nvl)->nvl_size)
    120 #define	NVL_FLAG(nvl)		((nvl)->nvl_flag)
    121 
    122 /* NV allocator framework */
    123 typedef struct nv_alloc_ops nv_alloc_ops_t;
    124 
    125 typedef struct nv_alloc {
    126 	const nv_alloc_ops_t *nva_ops;
    127 	void *nva_arg;
    128 } nv_alloc_t;
    129 
    130 struct nv_alloc_ops {
    131 	int (*nv_ao_init)(nv_alloc_t *, __va_list);
    132 	void (*nv_ao_fini)(nv_alloc_t *);
    133 	void *(*nv_ao_alloc)(nv_alloc_t *, size_t);
    134 	void (*nv_ao_free)(nv_alloc_t *, void *, size_t);
    135 	void (*nv_ao_reset)(nv_alloc_t *);
    136 };
    137 
    138 extern const nv_alloc_ops_t *nv_fixed_ops;
    139 extern nv_alloc_t *nv_alloc_nosleep;
    140 
    141 #if defined(_KERNEL) && !defined(_BOOT)
    142 extern nv_alloc_t *nv_alloc_sleep;
    143 #endif
    144 
    145 int nv_alloc_init(nv_alloc_t *, const nv_alloc_ops_t *, /* args */ ...);
    146 void nv_alloc_reset(nv_alloc_t *);
    147 void nv_alloc_fini(nv_alloc_t *);
    148 
    149 /* list management */
    150 int nvlist_alloc(nvlist_t **, uint_t, int);
    151 void nvlist_free(nvlist_t *);
    152 int nvlist_size(nvlist_t *, size_t *, int);
    153 int nvlist_pack(nvlist_t *, char **, size_t *, int, int);
    154 int nvlist_unpack(char *, size_t, nvlist_t **, int);
    155 int nvlist_dup(nvlist_t *, nvlist_t **, int);
    156 int nvlist_merge(nvlist_t *, nvlist_t *, int);
    157 
    158 int nvlist_xalloc(nvlist_t **, uint_t, nv_alloc_t *);
    159 int nvlist_xpack(nvlist_t *, char **, size_t *, int, nv_alloc_t *);
    160 int nvlist_xunpack(char *, size_t, nvlist_t **, nv_alloc_t *);
    161 int nvlist_xdup(nvlist_t *, nvlist_t **, nv_alloc_t *);
    162 nv_alloc_t *nvlist_lookup_nv_alloc(nvlist_t *);
    163 
    164 int nvlist_add_nvpair(nvlist_t *, nvpair_t *);
    165 int nvlist_add_boolean(nvlist_t *, const char *);
    166 int nvlist_add_boolean_value(nvlist_t *, const char *, boolean_t);
    167 int nvlist_add_byte(nvlist_t *, const char *, uchar_t);
    168 int nvlist_add_int8(nvlist_t *, const char *, int8_t);
    169 int nvlist_add_uint8(nvlist_t *, const char *, uint8_t);
    170 int nvlist_add_int16(nvlist_t *, const char *, int16_t);
    171 int nvlist_add_uint16(nvlist_t *, const char *, uint16_t);
    172 int nvlist_add_int32(nvlist_t *, const char *, int32_t);
    173 int nvlist_add_uint32(nvlist_t *, const char *, uint32_t);
    174 int nvlist_add_int64(nvlist_t *, const char *, int64_t);
    175 int nvlist_add_uint64(nvlist_t *, const char *, uint64_t);
    176 int nvlist_add_string(nvlist_t *, const char *, const char *);
    177 int nvlist_add_nvlist(nvlist_t *, const char *, nvlist_t *);
    178 int nvlist_add_boolean_array(nvlist_t *, const char *, boolean_t *, uint_t);
    179 int nvlist_add_byte_array(nvlist_t *, const char *, uchar_t *, uint_t);
    180 int nvlist_add_int8_array(nvlist_t *, const char *, int8_t *, uint_t);
    181 int nvlist_add_uint8_array(nvlist_t *, const char *, uint8_t *, uint_t);
    182 int nvlist_add_int16_array(nvlist_t *, const char *, int16_t *, uint_t);
    183 int nvlist_add_uint16_array(nvlist_t *, const char *, uint16_t *, uint_t);
    184 int nvlist_add_int32_array(nvlist_t *, const char *, int32_t *, uint_t);
    185 int nvlist_add_uint32_array(nvlist_t *, const char *, uint32_t *, uint_t);
    186 int nvlist_add_int64_array(nvlist_t *, const char *, int64_t *, uint_t);
    187 int nvlist_add_uint64_array(nvlist_t *, const char *, uint64_t *, uint_t);
    188 int nvlist_add_string_array(nvlist_t *, const char *, char *const *, uint_t);
    189 int nvlist_add_nvlist_array(nvlist_t *, const char *, nvlist_t **, uint_t);
    190 int nvlist_add_hrtime(nvlist_t *, const char *, hrtime_t);
    191 
    192 int nvlist_remove(nvlist_t *, const char *, data_type_t);
    193 int nvlist_remove_all(nvlist_t *, const char *);
    194 
    195 int nvlist_lookup_boolean(nvlist_t *, const char *);
    196 int nvlist_lookup_boolean_value(nvlist_t *, const char *, boolean_t *);
    197 int nvlist_lookup_byte(nvlist_t *, const char *, uchar_t *);
    198 int nvlist_lookup_int8(nvlist_t *, const char *, int8_t *);
    199 int nvlist_lookup_uint8(nvlist_t *, const char *, uint8_t *);
    200 int nvlist_lookup_int16(nvlist_t *, const char *, int16_t *);
    201 int nvlist_lookup_uint16(nvlist_t *, const char *, uint16_t *);
    202 int nvlist_lookup_int32(nvlist_t *, const char *, int32_t *);
    203 int nvlist_lookup_uint32(nvlist_t *, const char *, uint32_t *);
    204 int nvlist_lookup_int64(nvlist_t *, const char *, int64_t *);
    205 int nvlist_lookup_uint64(nvlist_t *, const char *, uint64_t *);
    206 int nvlist_lookup_string(nvlist_t *, const char *, char **);
    207 int nvlist_lookup_nvlist(nvlist_t *, const char *, nvlist_t **);
    208 int nvlist_lookup_boolean_array(nvlist_t *, const char *,
    209     boolean_t **, uint_t *);
    210 int nvlist_lookup_byte_array(nvlist_t *, const char *, uchar_t **, uint_t *);
    211 int nvlist_lookup_int8_array(nvlist_t *, const char *, int8_t **, uint_t *);
    212 int nvlist_lookup_uint8_array(nvlist_t *, const char *, uint8_t **, uint_t *);
    213 int nvlist_lookup_int16_array(nvlist_t *, const char *, int16_t **, uint_t *);
    214 int nvlist_lookup_uint16_array(nvlist_t *, const char *, uint16_t **, uint_t *);
    215 int nvlist_lookup_int32_array(nvlist_t *, const char *, int32_t **, uint_t *);
    216 int nvlist_lookup_uint32_array(nvlist_t *, const char *, uint32_t **, uint_t *);
    217 int nvlist_lookup_int64_array(nvlist_t *, const char *, int64_t **, uint_t *);
    218 int nvlist_lookup_uint64_array(nvlist_t *, const char *, uint64_t **, uint_t *);
    219 int nvlist_lookup_string_array(nvlist_t *, const char *, char ***, uint_t *);
    220 int nvlist_lookup_nvlist_array(nvlist_t *, const char *,
    221     nvlist_t ***, uint_t *);
    222 int nvlist_lookup_hrtime(nvlist_t *, const char *, hrtime_t *);
    223 int nvlist_lookup_pairs(nvlist_t *nvl, int, ...);
    224 
    225 int nvlist_lookup_nvpair(nvlist_t *nvl, const char *, nvpair_t **);
    226 boolean_t nvlist_exists(nvlist_t *nvl, const char *);
    227 
    228 /* processing nvpair */
    229 nvpair_t *nvlist_next_nvpair(nvlist_t *nvl, nvpair_t *);
    230 char *nvpair_name(nvpair_t *);
    231 data_type_t nvpair_type(nvpair_t *);
    232 int nvpair_value_boolean_value(nvpair_t *, boolean_t *);
    233 int nvpair_value_byte(nvpair_t *, uchar_t *);
    234 int nvpair_value_int8(nvpair_t *, int8_t *);
    235 int nvpair_value_uint8(nvpair_t *, uint8_t *);
    236 int nvpair_value_int16(nvpair_t *, int16_t *);
    237 int nvpair_value_uint16(nvpair_t *, uint16_t *);
    238 int nvpair_value_int32(nvpair_t *, int32_t *);
    239 int nvpair_value_uint32(nvpair_t *, uint32_t *);
    240 int nvpair_value_int64(nvpair_t *, int64_t *);
    241 int nvpair_value_uint64(nvpair_t *, uint64_t *);
    242 int nvpair_value_string(nvpair_t *, char **);
    243 int nvpair_value_nvlist(nvpair_t *, nvlist_t **);
    244 int nvpair_value_boolean_array(nvpair_t *, boolean_t **, uint_t *);
    245 int nvpair_value_byte_array(nvpair_t *, uchar_t **, uint_t *);
    246 int nvpair_value_int8_array(nvpair_t *, int8_t **, uint_t *);
    247 int nvpair_value_uint8_array(nvpair_t *, uint8_t **, uint_t *);
    248 int nvpair_value_int16_array(nvpair_t *, int16_t **, uint_t *);
    249 int nvpair_value_uint16_array(nvpair_t *, uint16_t **, uint_t *);
    250 int nvpair_value_int32_array(nvpair_t *, int32_t **, uint_t *);
    251 int nvpair_value_uint32_array(nvpair_t *, uint32_t **, uint_t *);
    252 int nvpair_value_int64_array(nvpair_t *, int64_t **, uint_t *);
    253 int nvpair_value_uint64_array(nvpair_t *, uint64_t **, uint_t *);
    254 int nvpair_value_string_array(nvpair_t *, char ***, uint_t *);
    255 int nvpair_value_nvlist_array(nvpair_t *, nvlist_t ***, uint_t *);
    256 int nvpair_value_hrtime(nvpair_t *, hrtime_t *);
    257 
    258 #ifdef	__cplusplus
    259 }
    260 #endif
    261 
    262 #endif	/* _SYS_NVPAIR_H */
    263