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
49struct nvlist;
50
51typedef 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)
81MALLOC_DECLARE(M_NVLIST);
82#endif
83
84__BEGIN_DECLS
85
86nvlist_t	*nvlist_create(int flags);
87void		 nvlist_destroy(nvlist_t *nvl);
88int		 nvlist_error(const nvlist_t *nvl);
89bool		 nvlist_empty(const nvlist_t *nvl);
90int		 nvlist_flags(const nvlist_t *nvl);
91void		 nvlist_set_error(nvlist_t *nvl, int error);
92
93nvlist_t *nvlist_clone(const nvlist_t *nvl);
94
95#ifndef _KERNEL
96void nvlist_dump(const nvlist_t *nvl, int fd);
97void nvlist_fdump(const nvlist_t *nvl, FILE *fp);
98#endif
99
100size_t		 nvlist_size(const nvlist_t *nvl);
101void		*nvlist_pack(const nvlist_t *nvl, size_t *sizep);
102nvlist_t	*nvlist_unpack(const void *buf, size_t size, int flags);
103
104int nvlist_send(int sock, const nvlist_t *nvl);
105nvlist_t *nvlist_recv(int sock, int flags);
106nvlist_t *nvlist_xfer(int sock, nvlist_t *nvl, int flags);
107
108const char *nvlist_next(const nvlist_t *nvl, int *typep, void **cookiep);
109
110const nvlist_t *nvlist_get_parent(const nvlist_t *nvl, void **cookiep);
111
112const nvlist_t *nvlist_get_array_next(const nvlist_t *nvl);
113bool nvlist_in_array(const nvlist_t *nvl);
114
115const 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
122bool nvlist_exists(const nvlist_t *nvl, const char *name);
123bool nvlist_exists_type(const nvlist_t *nvl, const char *name, int type);
124
125bool nvlist_exists_null(const nvlist_t *nvl, const char *name);
126bool nvlist_exists_bool(const nvlist_t *nvl, const char *name);
127bool nvlist_exists_number(const nvlist_t *nvl, const char *name);
128bool nvlist_exists_string(const nvlist_t *nvl, const char *name);
129bool nvlist_exists_nvlist(const nvlist_t *nvl, const char *name);
130bool nvlist_exists_binary(const nvlist_t *nvl, const char *name);
131bool nvlist_exists_bool_array(const nvlist_t *nvl, const char *name);
132bool nvlist_exists_number_array(const nvlist_t *nvl, const char *name);
133bool nvlist_exists_string_array(const nvlist_t *nvl, const char *name);
134bool nvlist_exists_nvlist_array(const nvlist_t *nvl, const char *name);
135#ifndef _KERNEL
136bool nvlist_exists_descriptor(const nvlist_t *nvl, const char *name);
137bool 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
146void nvlist_add_null(nvlist_t *nvl, const char *name);
147void nvlist_add_bool(nvlist_t *nvl, const char *name, bool value);
148void nvlist_add_number(nvlist_t *nvl, const char *name, uint64_t value);
149void nvlist_add_string(nvlist_t *nvl, const char *name, const char *value);
150void nvlist_add_stringf(nvlist_t *nvl, const char *name, const char *valuefmt, ...) __printflike(3, 4);
151#if !defined(_KERNEL) || defined(_VA_LIST_DECLARED)
152void nvlist_add_stringv(nvlist_t *nvl, const char *name, const char *valuefmt, va_list valueap) __printflike(3, 0);
153#endif
154void nvlist_add_nvlist(nvlist_t *nvl, const char *name, const nvlist_t *value);
155void nvlist_add_binary(nvlist_t *nvl, const char *name, const void *value, size_t size);
156void nvlist_add_bool_array(nvlist_t *nvl, const char *name, const bool *value, size_t nitems);
157void nvlist_add_number_array(nvlist_t *nvl, const char *name, const uint64_t *value, size_t nitems);
158void nvlist_add_string_array(nvlist_t *nvl, const char *name, const char * const *value, size_t nitems);
159void nvlist_add_nvlist_array(nvlist_t *nvl, const char *name, const nvlist_t * const *value, size_t nitems);
160#ifndef _KERNEL
161void nvlist_add_descriptor(nvlist_t *nvl, const char *name, int value);
162void nvlist_add_descriptor_array(nvlist_t *nvl, const char *name, const int *value, size_t nitems);
163#endif
164
165void nvlist_append_bool_array(nvlist_t *nvl, const char *name, const bool value);
166void nvlist_append_number_array(nvlist_t *nvl, const char *name, const uint64_t value);
167void nvlist_append_string_array(nvlist_t *nvl, const char *name, const char * const value);
168void nvlist_append_nvlist_array(nvlist_t *nvl, const char *name, const nvlist_t * const value);
169#ifndef _KERNEL
170void 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
178void nvlist_move_string(nvlist_t *nvl, const char *name, char *value);
179void nvlist_move_nvlist(nvlist_t *nvl, const char *name, nvlist_t *value);
180void nvlist_move_binary(nvlist_t *nvl, const char *name, void *value, size_t size);
181void nvlist_move_bool_array(nvlist_t *nvl, const char *name, bool *value, size_t nitems);
182void nvlist_move_string_array(nvlist_t *nvl, const char *name, char **value, size_t nitems);
183void nvlist_move_nvlist_array(nvlist_t *nvl, const char *name, nvlist_t **value, size_t nitems);
184void nvlist_move_number_array(nvlist_t *nvl, const char *name, uint64_t *value, size_t nitems);
185#ifndef _KERNEL
186void nvlist_move_descriptor(nvlist_t *nvl, const char *name, int value);
187void 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
196bool			 nvlist_get_bool(const nvlist_t *nvl, const char *name);
197uint64_t		 nvlist_get_number(const nvlist_t *nvl, const char *name);
198const char		*nvlist_get_string(const nvlist_t *nvl, const char *name);
199const nvlist_t		*nvlist_get_nvlist(const nvlist_t *nvl, const char *name);
200const void		*nvlist_get_binary(const nvlist_t *nvl, const char *name, size_t *sizep);
201const bool		*nvlist_get_bool_array(const nvlist_t *nvl, const char *name, size_t *nitemsp);
202const uint64_t		*nvlist_get_number_array(const nvlist_t *nvl, const char *name, size_t *nitemsp);
203const char * const	*nvlist_get_string_array(const nvlist_t *nvl, const char *name, size_t *nitemsp);
204const nvlist_t * const	*nvlist_get_nvlist_array(const nvlist_t *nvl, const char *name, size_t *nitemsp);
205#ifndef _KERNEL
206int			 nvlist_get_descriptor(const nvlist_t *nvl, const char *name);
207const 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
216bool		  nvlist_take_bool(nvlist_t *nvl, const char *name);
217uint64_t	  nvlist_take_number(nvlist_t *nvl, const char *name);
218char		 *nvlist_take_string(nvlist_t *nvl, const char *name);
219nvlist_t	 *nvlist_take_nvlist(nvlist_t *nvl, const char *name);
220void		 *nvlist_take_binary(nvlist_t *nvl, const char *name, size_t *sizep);
221bool		 *nvlist_take_bool_array(nvlist_t *nvl, const char *name, size_t *nitemsp);
222uint64_t	 *nvlist_take_number_array(nvlist_t *nvl, const char *name, size_t *nitemsp);
223char		**nvlist_take_string_array(nvlist_t *nvl, const char *name, size_t *nitemsp);
224nvlist_t	**nvlist_take_nvlist_array(nvlist_t *nvl, const char *name, size_t *nitemsp);
225#ifndef _KERNEL
226int		 nvlist_take_descriptor(nvlist_t *nvl, const char *name);
227int		 *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
235void nvlist_free(nvlist_t *nvl, const char *name);
236void nvlist_free_type(nvlist_t *nvl, const char *name, int type);
237
238void nvlist_free_null(nvlist_t *nvl, const char *name);
239void nvlist_free_bool(nvlist_t *nvl, const char *name);
240void nvlist_free_number(nvlist_t *nvl, const char *name);
241void nvlist_free_string(nvlist_t *nvl, const char *name);
242void nvlist_free_nvlist(nvlist_t *nvl, const char *name);
243void nvlist_free_binary(nvlist_t *nvl, const char *name);
244void nvlist_free_bool_array(nvlist_t *nvl, const char *name);
245void nvlist_free_number_array(nvlist_t *nvl, const char *name);
246void nvlist_free_string_array(nvlist_t *nvl, const char *name);
247void nvlist_free_nvlist_array(nvlist_t *nvl, const char *name);
248void nvlist_free_binary_array(nvlist_t *nvl, const char *name);
249#ifndef _KERNEL
250void nvlist_free_descriptor(nvlist_t *nvl, const char *name);
251void nvlist_free_descriptor_array(nvlist_t *nvl, const char *name);
252#endif
253
254__END_DECLS
255
256#endif	/* !_NV_H_ */
257