1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2013 The FreeBSD Foundation
5 * All rights reserved.
6 *
7 * This software was developed by Pawel Jakub Dawidek under sponsorship from
8 * the FreeBSD Foundation.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD$");
34
35#ifdef _KERNEL
36
37#include <sys/types.h>
38#include <sys/param.h>
39#include <sys/kernel.h>
40#include <sys/systm.h>
41#include <sys/malloc.h>
42
43#include <machine/stdarg.h>
44
45#else
46#include <stdarg.h>
47#include <stdbool.h>
48#include <stdint.h>
49#include <stdlib.h>
50#endif
51
52#include <sys/dnv.h>
53#include <sys/nv.h>
54
55#include "nv_impl.h"
56
57#define	DNVLIST_GET(ftype, type)					\
58ftype									\
59dnvlist_get_##type(const nvlist_t *nvl, const char *name, ftype defval)	\
60{									\
61									\
62	if (nvlist_exists_##type(nvl, name))				\
63		return (nvlist_get_##type(nvl, name));			\
64	else								\
65		return (defval);					\
66}
67
68DNVLIST_GET(bool, bool)
69DNVLIST_GET(uint64_t, number)
70DNVLIST_GET(const char *, string)
71DNVLIST_GET(const nvlist_t *, nvlist)
72#ifndef _KERNEL
73DNVLIST_GET(int, descriptor)
74#endif
75
76#undef	DNVLIST_GET
77
78const void *
79dnvlist_get_binary(const nvlist_t *nvl, const char *name, size_t *sizep,
80    const void *defval, size_t defsize)
81{
82	const void *value;
83
84	if (nvlist_exists_binary(nvl, name))
85		value = nvlist_get_binary(nvl, name, sizep);
86	else {
87		if (sizep != NULL)
88			*sizep = defsize;
89		value = defval;
90	}
91	return (value);
92}
93
94#define	DNVLIST_TAKE(ftype, type)					\
95ftype									\
96dnvlist_take_##type(nvlist_t *nvl, const char *name, ftype defval)	\
97{									\
98									\
99	if (nvlist_exists_##type(nvl, name))				\
100		return (nvlist_take_##type(nvl, name));			\
101	else								\
102		return (defval);					\
103}
104
105DNVLIST_TAKE(bool, bool)
106DNVLIST_TAKE(uint64_t, number)
107DNVLIST_TAKE(char *, string)
108DNVLIST_TAKE(nvlist_t *, nvlist)
109#ifndef _KERNEL
110DNVLIST_TAKE(int, descriptor)
111#endif
112
113#undef	DNVLIST_TAKE
114
115void *
116dnvlist_take_binary(nvlist_t *nvl, const char *name, size_t *sizep,
117    void *defval, size_t defsize)
118{
119	void *value;
120
121	if (nvlist_exists_binary(nvl, name))
122		value = nvlist_take_binary(nvl, name, sizep);
123	else {
124		if (sizep != NULL)
125			*sizep = defsize;
126		value = defval;
127	}
128	return (value);
129}
130
131