1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2013 The FreeBSD Foundation
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
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD$");
33
34#ifdef _KERNEL
35
36#include <sys/types.h>
37#include <sys/param.h>
38#include <sys/kernel.h>
39#include <sys/systm.h>
40#include <sys/malloc.h>
41
42#include <machine/stdarg.h>
43
44#else
45#include <stdarg.h>
46#include <stdbool.h>
47#include <stdint.h>
48#include <stdlib.h>
49#endif
50
51#include <sys/dnv.h>
52#include <sys/nv.h>
53
54#include "nv_impl.h"
55
56#define	DNVLIST_GET(ftype, type)					\
57ftype									\
58dnvlist_get_##type(const nvlist_t *nvl, const char *name, ftype defval)	\
59{									\
60									\
61	if (nvlist_exists_##type(nvl, name))				\
62		return (nvlist_get_##type(nvl, name));			\
63	else								\
64		return (defval);					\
65}
66
67DNVLIST_GET(bool, bool)
68DNVLIST_GET(uint64_t, number)
69DNVLIST_GET(const char *, string)
70DNVLIST_GET(const nvlist_t *, nvlist)
71#ifndef _KERNEL
72DNVLIST_GET(int, descriptor)
73#endif
74
75#undef	DNVLIST_GET
76
77const void *
78dnvlist_get_binary(const nvlist_t *nvl, const char *name, size_t *sizep,
79    const void *defval, size_t defsize)
80{
81	const void *value;
82
83	if (nvlist_exists_binary(nvl, name))
84		value = nvlist_get_binary(nvl, name, sizep);
85	else {
86		if (sizep != NULL)
87			*sizep = defsize;
88		value = defval;
89	}
90	return (value);
91}
92
93#define	DNVLIST_TAKE(ftype, type)					\
94ftype									\
95dnvlist_take_##type(nvlist_t *nvl, const char *name, ftype defval)	\
96{									\
97									\
98	if (nvlist_exists_##type(nvl, name))				\
99		return (nvlist_take_##type(nvl, name));			\
100	else								\
101		return (defval);					\
102}
103
104DNVLIST_TAKE(bool, bool)
105DNVLIST_TAKE(uint64_t, number)
106DNVLIST_TAKE(char *, string)
107DNVLIST_TAKE(nvlist_t *, nvlist)
108#ifndef _KERNEL
109DNVLIST_TAKE(int, descriptor)
110#endif
111
112#undef	DNVLIST_TAKE
113
114void *
115dnvlist_take_binary(nvlist_t *nvl, const char *name, size_t *sizep,
116    void *defval, size_t defsize)
117{
118	void *value;
119
120	if (nvlist_exists_binary(nvl, name))
121		value = nvlist_take_binary(nvl, name, sizep);
122	else {
123		if (sizep != NULL)
124			*sizep = defsize;
125		value = defval;
126	}
127	return (value);
128}
129
130