Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/sys/nv.h
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2009-2013 The FreeBSD Foundation 5 * Copyright (c) 2013-2015 Mariusz Zaborski <oshogbo@FreeBSD.org> 6 * All rights reserved. 7 * 8 * This software was developed by Pawel Jakub Dawidek under sponsorship from 9 * the FreeBSD Foundation. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD$ 33 */ 34 35 #ifndef _NV_H_ 36 #define _NV_H_ 37 38 #include <sys/cdefs.h> 39 40 #ifndef _KERNEL 41 #include <stdarg.h> 42 #include <stdbool.h> 43 #include <stdint.h> 44 #include <stdio.h> 45 #endif 46 47 #ifndef _NVLIST_T_DECLARED 48 #define _NVLIST_T_DECLARED 49 struct nvlist; 50 51 typedef struct nvlist nvlist_t; 52 #endif 53 54 #define NV_NAME_MAX 2048 55 56 #define NV_TYPE_NONE 0 57 58 #define NV_TYPE_NULL 1 59 #define NV_TYPE_BOOL 2 60 #define NV_TYPE_NUMBER 3 61 #define NV_TYPE_STRING 4 62 #define NV_TYPE_NVLIST 5 63 #define NV_TYPE_DESCRIPTOR 6 64 #define NV_TYPE_BINARY 7 65 #define NV_TYPE_BOOL_ARRAY 8 66 #define NV_TYPE_NUMBER_ARRAY 9 67 #define NV_TYPE_STRING_ARRAY 10 68 #define NV_TYPE_NVLIST_ARRAY 11 69 #define NV_TYPE_DESCRIPTOR_ARRAY 12 70 71 /* 72 * Perform case-insensitive lookups of provided names. 73 */ 74 #define NV_FLAG_IGNORE_CASE 0x01 75 /* 76 * Names don't have to be unique. 77 */ 78 #define NV_FLAG_NO_UNIQUE 0x02 79 80 #if defined(_KERNEL) && defined(MALLOC_DECLARE) 81 MALLOC_DECLARE(M_NVLIST); 82 #endif 83 84 __BEGIN_DECLS 85 86 nvlist_t *nvlist_create(int flags); 87 void nvlist_destroy(nvlist_t *nvl); 88 int nvlist_error(const nvlist_t *nvl); 89 bool nvlist_empty(const nvlist_t *nvl); 90 int nvlist_flags(const nvlist_t *nvl); 91 void nvlist_set_error(nvlist_t *nvl, int error); 92 93 nvlist_t *nvlist_clone(const nvlist_t *nvl); 94 95 #ifndef _KERNEL 96 void nvlist_dump(const nvlist_t *nvl, int fd); 97 void nvlist_fdump(const nvlist_t *nvl, FILE *fp); 98 #endif 99 100 size_t nvlist_size(const nvlist_t *nvl); 101 void *nvlist_pack(const nvlist_t *nvl, size_t *sizep); 102 nvlist_t *nvlist_unpack(const void *buf, size_t size, int flags); 103 104 int nvlist_send(int sock, const nvlist_t *nvl); 105 nvlist_t *nvlist_recv(int sock, int flags); 106 nvlist_t *nvlist_xfer(int sock, nvlist_t *nvl, int flags); 107 108 const char *nvlist_next(const nvlist_t *nvl, int *typep, void **cookiep); 109 110 const nvlist_t *nvlist_get_parent(const nvlist_t *nvl, void **cookiep); 111 112 const nvlist_t *nvlist_get_array_next(const nvlist_t *nvl); 113 bool nvlist_in_array(const nvlist_t *nvl); 114 115 const nvlist_t *nvlist_get_pararr(const nvlist_t *nvl, void **cookiep); 116 117 /* 118 * The nvlist_exists functions check if the given name (optionally of the given 119 * type) exists on nvlist. 120 */ 121 122 bool nvlist_exists(const nvlist_t *nvl, const char *name); 123 bool nvlist_exists_type(const nvlist_t *nvl, const char *name, int type); 124 125 bool nvlist_exists_null(const nvlist_t *nvl, const char *name); 126 bool nvlist_exists_bool(const nvlist_t *nvl, const char *name); 127 bool nvlist_exists_number(const nvlist_t *nvl, const char *name); 128 bool nvlist_exists_string(const nvlist_t *nvl, const char *name); 129 bool nvlist_exists_nvlist(const nvlist_t *nvl, const char *name); 130 bool nvlist_exists_binary(const nvlist_t *nvl, const char *name); 131 bool nvlist_exists_bool_array(const nvlist_t *nvl, const char *name); 132 bool nvlist_exists_number_array(const nvlist_t *nvl, const char *name); 133 bool nvlist_exists_string_array(const nvlist_t *nvl, const char *name); 134 bool nvlist_exists_nvlist_array(const nvlist_t *nvl, const char *name); 135 #ifndef _KERNEL 136 bool nvlist_exists_descriptor(const nvlist_t *nvl, const char *name); 137 bool nvlist_exists_descriptor_array(const nvlist_t *nvl, const char *name); 138 #endif 139 140 /* 141 * The nvlist_add functions add the given name/value pair. 142 * If a pointer is provided, nvlist_add will internally allocate memory for the 143 * given data (in other words it won't consume provided buffer). 144 */ 145 146 void nvlist_add_null(nvlist_t *nvl, const char *name); 147 void nvlist_add_bool(nvlist_t *nvl, const char *name, bool value); 148 void nvlist_add_number(nvlist_t *nvl, const char *name, uint64_t value); 149 void nvlist_add_string(nvlist_t *nvl, const char *name, const char *value); 150 void nvlist_add_stringf(nvlist_t *nvl, const char *name, const char *valuefmt, ...) __printflike(3, 4); 151 #if !defined(_KERNEL) || defined(_VA_LIST_DECLARED) 152 void nvlist_add_stringv(nvlist_t *nvl, const char *name, const char *valuefmt, va_list valueap) __printflike(3, 0); 153 #endif 154 void nvlist_add_nvlist(nvlist_t *nvl, const char *name, const nvlist_t *value); 155 void nvlist_add_binary(nvlist_t *nvl, const char *name, const void *value, size_t size); 156 void nvlist_add_bool_array(nvlist_t *nvl, const char *name, const bool *value, size_t nitems); 157 void nvlist_add_number_array(nvlist_t *nvl, const char *name, const uint64_t *value, size_t nitems); 158 void nvlist_add_string_array(nvlist_t *nvl, const char *name, const char * const *value, size_t nitems); 159 void nvlist_add_nvlist_array(nvlist_t *nvl, const char *name, const nvlist_t * const *value, size_t nitems); 160 #ifndef _KERNEL 161 void nvlist_add_descriptor(nvlist_t *nvl, const char *name, int value); 162 void nvlist_add_descriptor_array(nvlist_t *nvl, const char *name, const int *value, size_t nitems); 163 #endif 164 165 void nvlist_append_bool_array(nvlist_t *nvl, const char *name, const bool value); 166 void nvlist_append_number_array(nvlist_t *nvl, const char *name, const uint64_t value); 167 void nvlist_append_string_array(nvlist_t *nvl, const char *name, const char * const value); 168 void nvlist_append_nvlist_array(nvlist_t *nvl, const char *name, const nvlist_t * const value); 169 #ifndef _KERNEL 170 void nvlist_append_descriptor_array(nvlist_t *nvl, const char *name, int value); 171 #endif 172 173 /* 174 * The nvlist_move functions add the given name/value pair. 175 * The functions consumes provided buffer. 176 */ 177 178 void nvlist_move_string(nvlist_t *nvl, const char *name, char *value); 179 void nvlist_move_nvlist(nvlist_t *nvl, const char *name, nvlist_t *value); 180 void nvlist_move_binary(nvlist_t *nvl, const char *name, void *value, size_t size); 181 void nvlist_move_bool_array(nvlist_t *nvl, const char *name, bool *value, size_t nitems); 182 void nvlist_move_string_array(nvlist_t *nvl, const char *name, char **value, size_t nitems); 183 void nvlist_move_nvlist_array(nvlist_t *nvl, const char *name, nvlist_t **value, size_t nitems); 184 void nvlist_move_number_array(nvlist_t *nvl, const char *name, uint64_t *value, size_t nitems); 185 #ifndef _KERNEL 186 void nvlist_move_descriptor(nvlist_t *nvl, const char *name, int value); 187 void nvlist_move_descriptor_array(nvlist_t *nvl, const char *name, int *value, size_t nitems); 188 #endif 189 190 /* 191 * The nvlist_get functions returns value associated with the given name. 192 * If it returns a pointer, the pointer represents internal buffer and should 193 * not be freed by the caller. 194 */ 195 196 bool nvlist_get_bool(const nvlist_t *nvl, const char *name); 197 uint64_t nvlist_get_number(const nvlist_t *nvl, const char *name); 198 const char *nvlist_get_string(const nvlist_t *nvl, const char *name); 199 const nvlist_t *nvlist_get_nvlist(const nvlist_t *nvl, const char *name); 200 const void *nvlist_get_binary(const nvlist_t *nvl, const char *name, size_t *sizep); 201 const bool *nvlist_get_bool_array(const nvlist_t *nvl, const char *name, size_t *nitemsp); 202 const uint64_t *nvlist_get_number_array(const nvlist_t *nvl, const char *name, size_t *nitemsp); 203 const char * const *nvlist_get_string_array(const nvlist_t *nvl, const char *name, size_t *nitemsp); 204 const nvlist_t * const *nvlist_get_nvlist_array(const nvlist_t *nvl, const char *name, size_t *nitemsp); 205 #ifndef _KERNEL 206 int nvlist_get_descriptor(const nvlist_t *nvl, const char *name); 207 const int *nvlist_get_descriptor_array(const nvlist_t *nvl, const char *name, size_t *nitemsp); 208 #endif 209 210 /* 211 * The nvlist_take functions returns value associated with the given name and 212 * remove the given entry from the nvlist. 213 * The caller is responsible for freeing received data. 214 */ 215 216 bool nvlist_take_bool(nvlist_t *nvl, const char *name); 217 uint64_t nvlist_take_number(nvlist_t *nvl, const char *name); 218 char *nvlist_take_string(nvlist_t *nvl, const char *name); 219 nvlist_t *nvlist_take_nvlist(nvlist_t *nvl, const char *name); 220 void *nvlist_take_binary(nvlist_t *nvl, const char *name, size_t *sizep); 221 bool *nvlist_take_bool_array(nvlist_t *nvl, const char *name, size_t *nitemsp); 222 uint64_t *nvlist_take_number_array(nvlist_t *nvl, const char *name, size_t *nitemsp); 223 char **nvlist_take_string_array(nvlist_t *nvl, const char *name, size_t *nitemsp); 224 nvlist_t **nvlist_take_nvlist_array(nvlist_t *nvl, const char *name, size_t *nitemsp); 225 #ifndef _KERNEL 226 int nvlist_take_descriptor(nvlist_t *nvl, const char *name); 227 int *nvlist_take_descriptor_array(nvlist_t *nvl, const char *name, size_t *nitemsp); 228 #endif 229 230 /* 231 * The nvlist_free functions removes the given name/value pair from the nvlist 232 * and frees memory associated with it. 233 */ 234 235 void nvlist_free(nvlist_t *nvl, const char *name); 236 void nvlist_free_type(nvlist_t *nvl, const char *name, int type); 237 238 void nvlist_free_null(nvlist_t *nvl, const char *name); 239 void nvlist_free_bool(nvlist_t *nvl, const char *name); 240 void nvlist_free_number(nvlist_t *nvl, const char *name); 241 void nvlist_free_string(nvlist_t *nvl, const char *name); 242 void nvlist_free_nvlist(nvlist_t *nvl, const char *name); 243 void nvlist_free_binary(nvlist_t *nvl, const char *name); 244 void nvlist_free_bool_array(nvlist_t *nvl, const char *name); 245 void nvlist_free_number_array(nvlist_t *nvl, const char *name); 246 void nvlist_free_string_array(nvlist_t *nvl, const char *name); 247 void nvlist_free_nvlist_array(nvlist_t *nvl, const char *name); 248 void nvlist_free_binary_array(nvlist_t *nvl, const char *name); 249 #ifndef _KERNEL 250 void nvlist_free_descriptor(nvlist_t *nvl, const char *name); 251 void nvlist_free_descriptor_array(nvlist_t *nvl, const char *name); 252 #endif 253 254 __END_DECLS 255 256 #endif /* !_NV_H_ */
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