FreeBSD/Linux Kernel Cross Reference
sys/sys/nv.h
1 /*-
2 * Copyright (c) 2009-2013 The FreeBSD Foundation
3 * Copyright (c) 2013-2015 Mariusz Zaborski <oshogbo@FreeBSD.org>
4 * All rights reserved.
5 *
6 * This software was developed by Pawel Jakub Dawidek under sponsorship from
7 * the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $FreeBSD: releng/11.0/sys/sys/nv.h 293361 2016-01-07 20:52:35Z bdrewery $
31 */
32
33 #ifndef _NV_H_
34 #define _NV_H_
35
36 #include <sys/cdefs.h>
37
38 #ifndef _KERNEL
39 #include <stdarg.h>
40 #include <stdbool.h>
41 #include <stdint.h>
42 #include <stdio.h>
43 #endif
44
45 #ifndef _NVLIST_T_DECLARED
46 #define _NVLIST_T_DECLARED
47 struct nvlist;
48
49 typedef struct nvlist nvlist_t;
50 #endif
51
52 #define NV_NAME_MAX 2048
53
54 #define NV_TYPE_NONE 0
55
56 #define NV_TYPE_NULL 1
57 #define NV_TYPE_BOOL 2
58 #define NV_TYPE_NUMBER 3
59 #define NV_TYPE_STRING 4
60 #define NV_TYPE_NVLIST 5
61 #define NV_TYPE_DESCRIPTOR 6
62 #define NV_TYPE_BINARY 7
63 #define NV_TYPE_BOOL_ARRAY 8
64 #define NV_TYPE_NUMBER_ARRAY 9
65 #define NV_TYPE_STRING_ARRAY 10
66 #define NV_TYPE_NVLIST_ARRAY 11
67 #define NV_TYPE_DESCRIPTOR_ARRAY 12
68
69 /*
70 * Perform case-insensitive lookups of provided names.
71 */
72 #define NV_FLAG_IGNORE_CASE 0x01
73 /*
74 * Names don't have to be unique.
75 */
76 #define NV_FLAG_NO_UNIQUE 0x02
77
78 #if defined(_KERNEL) && defined(MALLOC_DECLARE)
79 MALLOC_DECLARE(M_NVLIST);
80 #endif
81
82 __BEGIN_DECLS
83
84 nvlist_t *nvlist_create(int flags);
85 void nvlist_destroy(nvlist_t *nvl);
86 int nvlist_error(const nvlist_t *nvl);
87 bool nvlist_empty(const nvlist_t *nvl);
88 int nvlist_flags(const nvlist_t *nvl);
89 void nvlist_set_error(nvlist_t *nvl, int error);
90
91 nvlist_t *nvlist_clone(const nvlist_t *nvl);
92
93 #ifndef _KERNEL
94 void nvlist_dump(const nvlist_t *nvl, int fd);
95 void nvlist_fdump(const nvlist_t *nvl, FILE *fp);
96 #endif
97
98 size_t nvlist_size(const nvlist_t *nvl);
99 void *nvlist_pack(const nvlist_t *nvl, size_t *sizep);
100 nvlist_t *nvlist_unpack(const void *buf, size_t size, int flags);
101
102 int nvlist_send(int sock, const nvlist_t *nvl);
103 nvlist_t *nvlist_recv(int sock, int flags);
104 nvlist_t *nvlist_xfer(int sock, nvlist_t *nvl, int flags);
105
106 const char *nvlist_next(const nvlist_t *nvl, int *typep, void **cookiep);
107
108 const nvlist_t *nvlist_get_parent(const nvlist_t *nvl, void **cookiep);
109
110 const nvlist_t *nvlist_get_array_next(const nvlist_t *nvl);
111 bool nvlist_in_array(const nvlist_t *nvl);
112
113 const nvlist_t *nvlist_get_pararr(const nvlist_t *nvl, void **cookiep);
114
115 /*
116 * The nvlist_exists functions check if the given name (optionally of the given
117 * type) exists on nvlist.
118 */
119
120 bool nvlist_exists(const nvlist_t *nvl, const char *name);
121 bool nvlist_exists_type(const nvlist_t *nvl, const char *name, int type);
122
123 bool nvlist_exists_null(const nvlist_t *nvl, const char *name);
124 bool nvlist_exists_bool(const nvlist_t *nvl, const char *name);
125 bool nvlist_exists_number(const nvlist_t *nvl, const char *name);
126 bool nvlist_exists_string(const nvlist_t *nvl, const char *name);
127 bool nvlist_exists_nvlist(const nvlist_t *nvl, const char *name);
128 bool nvlist_exists_binary(const nvlist_t *nvl, const char *name);
129 bool nvlist_exists_bool_array(const nvlist_t *nvl, const char *name);
130 bool nvlist_exists_number_array(const nvlist_t *nvl, const char *name);
131 bool nvlist_exists_string_array(const nvlist_t *nvl, const char *name);
132 bool nvlist_exists_nvlist_array(const nvlist_t *nvl, const char *name);
133 #ifndef _KERNEL
134 bool nvlist_exists_descriptor(const nvlist_t *nvl, const char *name);
135 bool nvlist_exists_descriptor_array(const nvlist_t *nvl, const char *name);
136 #endif
137
138 /*
139 * The nvlist_add functions add the given name/value pair.
140 * If a pointer is provided, nvlist_add will internally allocate memory for the
141 * given data (in other words it won't consume provided buffer).
142 */
143
144 void nvlist_add_null(nvlist_t *nvl, const char *name);
145 void nvlist_add_bool(nvlist_t *nvl, const char *name, bool value);
146 void nvlist_add_number(nvlist_t *nvl, const char *name, uint64_t value);
147 void nvlist_add_string(nvlist_t *nvl, const char *name, const char *value);
148 void nvlist_add_stringf(nvlist_t *nvl, const char *name, const char *valuefmt, ...) __printflike(3, 4);
149 #if !defined(_KERNEL) || defined(_VA_LIST_DECLARED)
150 void nvlist_add_stringv(nvlist_t *nvl, const char *name, const char *valuefmt, va_list valueap) __printflike(3, 0);
151 #endif
152 void nvlist_add_nvlist(nvlist_t *nvl, const char *name, const nvlist_t *value);
153 void nvlist_add_binary(nvlist_t *nvl, const char *name, const void *value, size_t size);
154 void nvlist_add_bool_array(nvlist_t *nvl, const char *name, const bool *value, size_t nitems);
155 void nvlist_add_number_array(nvlist_t *nvl, const char *name, const uint64_t *value, size_t nitems);
156 void nvlist_add_string_array(nvlist_t *nvl, const char *name, const char * const *value, size_t nitems);
157 void nvlist_add_nvlist_array(nvlist_t *nvl, const char *name, const nvlist_t * const *value, size_t nitems);
158 #ifndef _KERNEL
159 void nvlist_add_descriptor(nvlist_t *nvl, const char *name, int value);
160 void nvlist_add_descriptor_array(nvlist_t *nvl, const char *name, const int *value, size_t nitems);
161 #endif
162
163 /*
164 * The nvlist_move functions add the given name/value pair.
165 * The functions consumes provided buffer.
166 */
167
168 void nvlist_move_string(nvlist_t *nvl, const char *name, char *value);
169 void nvlist_move_nvlist(nvlist_t *nvl, const char *name, nvlist_t *value);
170 void nvlist_move_binary(nvlist_t *nvl, const char *name, void *value, size_t size);
171 void nvlist_move_bool_array(nvlist_t *nvl, const char *name, bool *value, size_t nitems);
172 void nvlist_move_string_array(nvlist_t *nvl, const char *name, char **value, size_t nitems);
173 void nvlist_move_nvlist_array(nvlist_t *nvl, const char *name, nvlist_t **value, size_t nitems);
174 void nvlist_move_number_array(nvlist_t *nvl, const char *name, uint64_t *value, size_t nitems);
175 #ifndef _KERNEL
176 void nvlist_move_descriptor(nvlist_t *nvl, const char *name, int value);
177 void nvlist_move_descriptor_array(nvlist_t *nvl, const char *name, int *value, size_t nitems);
178 #endif
179
180 /*
181 * The nvlist_get functions returns value associated with the given name.
182 * If it returns a pointer, the pointer represents internal buffer and should
183 * not be freed by the caller.
184 */
185
186 bool nvlist_get_bool(const nvlist_t *nvl, const char *name);
187 uint64_t nvlist_get_number(const nvlist_t *nvl, const char *name);
188 const char *nvlist_get_string(const nvlist_t *nvl, const char *name);
189 const nvlist_t *nvlist_get_nvlist(const nvlist_t *nvl, const char *name);
190 const void *nvlist_get_binary(const nvlist_t *nvl, const char *name, size_t *sizep);
191 const bool *nvlist_get_bool_array(const nvlist_t *nvl, const char *name, size_t *nitemsp);
192 const uint64_t *nvlist_get_number_array(const nvlist_t *nvl, const char *name, size_t *nitemsp);
193 const char * const *nvlist_get_string_array(const nvlist_t *nvl, const char *name, size_t *nitemsp);
194 const nvlist_t * const *nvlist_get_nvlist_array(const nvlist_t *nvl, const char *name, size_t *nitemsp);
195 #ifndef _KERNEL
196 int nvlist_get_descriptor(const nvlist_t *nvl, const char *name);
197 const int *nvlist_get_descriptor_array(const nvlist_t *nvl, const char *name, size_t *nitemsp);
198 #endif
199
200 /*
201 * The nvlist_take functions returns value associated with the given name and
202 * remove the given entry from the nvlist.
203 * The caller is responsible for freeing received data.
204 */
205
206 bool nvlist_take_bool(nvlist_t *nvl, const char *name);
207 uint64_t nvlist_take_number(nvlist_t *nvl, const char *name);
208 char *nvlist_take_string(nvlist_t *nvl, const char *name);
209 nvlist_t *nvlist_take_nvlist(nvlist_t *nvl, const char *name);
210 void *nvlist_take_binary(nvlist_t *nvl, const char *name, size_t *sizep);
211 bool *nvlist_take_bool_array(nvlist_t *nvl, const char *name, size_t *nitemsp);
212 uint64_t *nvlist_take_number_array(nvlist_t *nvl, const char *name, size_t *nitemsp);
213 char **nvlist_take_string_array(nvlist_t *nvl, const char *name, size_t *nitemsp);
214 nvlist_t **nvlist_take_nvlist_array(nvlist_t *nvl, const char *name, size_t *nitemsp);
215 #ifndef _KERNEL
216 int nvlist_take_descriptor(nvlist_t *nvl, const char *name);
217 int *nvlist_take_descriptor_array(nvlist_t *nvl, const char *name, size_t *nitemsp);
218 #endif
219
220 /*
221 * The nvlist_free functions removes the given name/value pair from the nvlist
222 * and frees memory associated with it.
223 */
224
225 void nvlist_free(nvlist_t *nvl, const char *name);
226 void nvlist_free_type(nvlist_t *nvl, const char *name, int type);
227
228 void nvlist_free_null(nvlist_t *nvl, const char *name);
229 void nvlist_free_bool(nvlist_t *nvl, const char *name);
230 void nvlist_free_number(nvlist_t *nvl, const char *name);
231 void nvlist_free_string(nvlist_t *nvl, const char *name);
232 void nvlist_free_nvlist(nvlist_t *nvl, const char *name);
233 void nvlist_free_binary(nvlist_t *nvl, const char *name);
234 void nvlist_free_bool_array(nvlist_t *nvl, const char *name);
235 void nvlist_free_number_array(nvlist_t *nvl, const char *name);
236 void nvlist_free_string_array(nvlist_t *nvl, const char *name);
237 void nvlist_free_nvlist_array(nvlist_t *nvl, const char *name);
238 void nvlist_free_binary_array(nvlist_t *nvl, const char *name);
239 #ifndef _KERNEL
240 void nvlist_free_descriptor(nvlist_t *nvl, const char *name);
241 void nvlist_free_descriptor_array(nvlist_t *nvl, const char *name);
242 #endif
243
244 __END_DECLS
245
246 #endif /* !_NV_H_ */
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