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) \
57 ftype \
58 dnvlist_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
DNVLIST_GET(bool,bool)67 DNVLIST_GET(bool, bool)
68 DNVLIST_GET(uint64_t, number)
69 DNVLIST_GET(const char *, string)
70 DNVLIST_GET(const nvlist_t *, nvlist)
71 #ifndef _KERNEL
72 DNVLIST_GET(int, descriptor)
73 #endif
74
75 #undef DNVLIST_GET
76
77 const void *
78 dnvlist_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) \
94 ftype \
95 dnvlist_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
DNVLIST_TAKE(bool,bool)104 DNVLIST_TAKE(bool, bool)
105 DNVLIST_TAKE(uint64_t, number)
106 DNVLIST_TAKE(char *, string)
107 DNVLIST_TAKE(nvlist_t *, nvlist)
108 #ifndef _KERNEL
109 DNVLIST_TAKE(int, descriptor)
110 #endif
111
112 #undef DNVLIST_TAKE
113
114 void *
115 dnvlist_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