1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2016 Adam Starak <starak.adam@gmail.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31#ifndef	_CNV_H_
32#define	_CNV_H_
33
34#include <sys/cdefs.h>
35
36#ifndef _KERNEL
37#include <stdarg.h>
38#include <stdbool.h>
39#include <stdint.h>
40#include <stdio.h>
41#endif
42
43#ifndef	_NVLIST_T_DECLARED
44#define	_NVLIST_T_DECLARED
45struct nvlist;
46
47typedef struct nvlist nvlist_t;
48#endif
49
50__BEGIN_DECLS
51
52/*
53 * Functions which returns information about the given cookie.
54 */
55const char	*cnvlist_name(const void *cookie);
56int		 cnvlist_type(const void *cookie);
57
58/*
59 * The cnvlist_get functions returns value associated with the given cookie.
60 * If it returns a pointer, the pointer represents internal buffer and should
61 * not be freed by the caller.
62 */
63
64bool			 cnvlist_get_bool(const void *cookie);
65uint64_t		 cnvlist_get_number(const void *cookie);
66const char		*cnvlist_get_string(const void *cookie);
67const nvlist_t		*cnvlist_get_nvlist(const void *cookie);
68const void		*cnvlist_get_binary(const void *cookie, size_t *sizep);
69const bool		*cnvlist_get_bool_array(const void *cookie, size_t *nitemsp);
70const uint64_t		*cnvlist_get_number_array(const void *cookie, size_t *nitemsp);
71const char * const	*cnvlist_get_string_array(const void *cookie, size_t *nitemsp);
72const nvlist_t * const	*cnvlist_get_nvlist_array(const void *cookie, size_t *nitemsp);
73#ifndef _KERNEL
74int			 cnvlist_get_descriptor(const void *cookie);
75const int		*cnvlist_get_descriptor_array(const void *cookie, size_t *nitemsp);
76#endif
77
78/*
79 * The cnvlist_take functions returns value associated with the given cookie and
80 * remove the given entry from the nvlist.
81 * The caller is responsible for freeing received data.
82 */
83
84bool			  cnvlist_take_bool(void *cookie);
85uint64_t		  cnvlist_take_number(void *cookie);
86char			 *cnvlist_take_string(void *cookie);
87nvlist_t		 *cnvlist_take_nvlist(void *cookie);
88void			 *cnvlist_take_binary(void *cookie, size_t *sizep);
89bool			 *cnvlist_take_bool_array(void *cookie, size_t *nitemsp);
90uint64_t		 *cnvlist_take_number_array(void *cookie, size_t *nitemsp);
91char			**cnvlist_take_string_array(void *cookie, size_t *nitemsp);
92nvlist_t		**cnvlist_take_nvlist_array(void *cookie, size_t *nitemsp);
93#ifndef _KERNEL
94int			  cnvlist_take_descriptor(void *cookie);
95int			 *cnvlist_take_descriptor_array(void *cookie, size_t *nitemsp);
96#endif
97
98/*
99 * The cnvlist_free functions removes the given name/value pair from the nvlist based on cookie
100 * and frees memory associated with it.
101 */
102
103void	cnvlist_free_bool(void *cookie);
104void	cnvlist_free_number(void *cookie);
105void	cnvlist_free_string(void *cookie);
106void	cnvlist_free_nvlist(void *cookie);
107void	cnvlist_free_binary(void *cookie);
108void	cnvlist_free_bool_array(void *cookie);
109void	cnvlist_free_number_array(void *cookie);
110void	cnvlist_free_string_array(void *cookie);
111void	cnvlist_free_nvlist_array(void *cookie);
112#ifndef _KERNEL
113void	cnvlist_free_descriptor(void *cookie);
114void	cnvlist_free_descriptor_array(void *cookie);
115#endif
116
117__END_DECLS
118
119#endif	/* !_CNV_H_ */
120