1 /* $NetBSD: dnvlist.c,v 1.4 2018/09/08 14:32:25 christos Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
5 *
6 * Copyright (c) 2013 The FreeBSD Foundation
7 * All rights reserved.
8 *
9 * This software was developed by Pawel Jakub Dawidek under sponsorship from
10 * the FreeBSD Foundation.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 #ifdef __FreeBSD__
36 __FBSDID("$FreeBSD: head/sys/contrib/libnv/dnvlist.c 328474 2018-01-27 12:58:21Z oshogbo $");
37 #else
38 __RCSID("$NetBSD: dnvlist.c,v 1.4 2018/09/08 14:32:25 christos Exp $");
39 #endif
40
41 #if defined(_KERNEL) || defined(_STANDALONE)
42
43 #include <sys/types.h>
44 #include <sys/param.h>
45 #include <sys/kernel.h>
46 #include <sys/systm.h>
47 #include <sys/malloc.h>
48
49 #ifdef __FreeBSD__
50 #include <machine/stdarg.h>
51 #endif
52
53 #else
54 #include <stdarg.h>
55 #include <stdbool.h>
56 #include <stdint.h>
57 #include <stdlib.h>
58 #endif
59
60 #ifdef __FreeBSD__
61 #include <sys/dnv.h>
62 #include <sys/nv.h>
63 #else
64 #include "dnv.h"
65 #include "nv.h"
66 #endif
67
68 #include "nv_impl.h"
69
70 #define DNVLIST_GET(ftype, type) \
71 ftype \
72 dnvlist_get_##type(const nvlist_t *nvl, const char *name, ftype defval) \
73 { \
74 \
75 if (nvlist_exists_##type(nvl, name)) \
76 return (nvlist_get_##type(nvl, name)); \
77 else \
78 return (defval); \
79 }
80
DNVLIST_GET(bool,bool)81 DNVLIST_GET(bool, bool)
82 DNVLIST_GET(uint64_t, number)
83 DNVLIST_GET(const char *, string)
84 DNVLIST_GET(const nvlist_t *, nvlist)
85 #if !defined(_KERNEL) && !defined(_STANDALONE)
86 DNVLIST_GET(int, descriptor)
87 #endif
88
89 #undef DNVLIST_GET
90
91 const void *
92 dnvlist_get_binary(const nvlist_t *nvl, const char *name, size_t *sizep,
93 const void *defval, size_t defsize)
94 {
95 const void *value;
96
97 if (nvlist_exists_binary(nvl, name))
98 value = nvlist_get_binary(nvl, name, sizep);
99 else {
100 if (sizep != NULL)
101 *sizep = defsize;
102 value = defval;
103 }
104 return (value);
105 }
106
107 #define DNVLIST_TAKE(ftype, type) \
108 ftype \
109 dnvlist_take_##type(nvlist_t *nvl, const char *name, ftype defval) \
110 { \
111 \
112 if (nvlist_exists_##type(nvl, name)) \
113 return (nvlist_take_##type(nvl, name)); \
114 else \
115 return (defval); \
116 }
117
DNVLIST_TAKE(bool,bool)118 DNVLIST_TAKE(bool, bool)
119 DNVLIST_TAKE(uint64_t, number)
120 DNVLIST_TAKE(char *, string)
121 DNVLIST_TAKE(nvlist_t *, nvlist)
122 #if !defined(_KERNEL) && !defined(_STANDALONE)
123 DNVLIST_TAKE(int, descriptor)
124 #endif
125
126 #undef DNVLIST_TAKE
127
128 void *
129 dnvlist_take_binary(nvlist_t *nvl, const char *name, size_t *sizep,
130 void *defval, size_t defsize)
131 {
132 void *value;
133
134 if (nvlist_exists_binary(nvl, name))
135 value = nvlist_take_binary(nvl, name, sizep);
136 else {
137 if (sizep != NULL)
138 *sizep = defsize;
139 value = defval;
140 }
141 return (value);
142 }
143
144