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 #include <sys/stdarg.h>
42
43 #else
44 #include <stdarg.h>
45 #include <stdbool.h>
46 #include <stdint.h>
47 #include <stdlib.h>
48 #endif
49
50 #include <sys/dnv.h>
51 #include <sys/nv.h>
52
53 #include "nv_impl.h"
54
55 #define DNVLIST_GET(ftype, type) \
56 ftype \
57 dnvlist_get_##type(const nvlist_t *nvl, const char *name, ftype defval) \
58 { \
59 \
60 if (nvlist_exists_##type(nvl, name)) \
61 return (nvlist_get_##type(nvl, name)); \
62 else \
63 return (defval); \
64 }
65
DNVLIST_GET(bool,bool)66 DNVLIST_GET(bool, bool)
67 DNVLIST_GET(uint64_t, number)
68 DNVLIST_GET(const char *, string)
69 DNVLIST_GET(const nvlist_t *, nvlist)
70 #ifndef _KERNEL
71 DNVLIST_GET(int, descriptor)
72 #endif
73
74 #undef DNVLIST_GET
75
76 const void *
77 dnvlist_get_binary(const nvlist_t *nvl, const char *name, size_t *sizep,
78 const void *defval, size_t defsize)
79 {
80 const void *value;
81
82 if (nvlist_exists_binary(nvl, name))
83 value = nvlist_get_binary(nvl, name, sizep);
84 else {
85 if (sizep != NULL)
86 *sizep = defsize;
87 value = defval;
88 }
89 return (value);
90 }
91
92 #define DNVLIST_TAKE(ftype, type) \
93 ftype \
94 dnvlist_take_##type(nvlist_t *nvl, const char *name, ftype defval) \
95 { \
96 \
97 if (nvlist_exists_##type(nvl, name)) \
98 return (nvlist_take_##type(nvl, name)); \
99 else \
100 return (defval); \
101 }
102
DNVLIST_TAKE(bool,bool)103 DNVLIST_TAKE(bool, bool)
104 DNVLIST_TAKE(uint64_t, number)
105 DNVLIST_TAKE(char *, string)
106 DNVLIST_TAKE(nvlist_t *, nvlist)
107 #ifndef _KERNEL
108 DNVLIST_TAKE(int, descriptor)
109 #endif
110
111 #undef DNVLIST_TAKE
112
113 void *
114 dnvlist_take_binary(nvlist_t *nvl, const char *name, size_t *sizep,
115 void *defval, size_t defsize)
116 {
117 void *value;
118
119 if (nvlist_exists_binary(nvl, name))
120 value = nvlist_take_binary(nvl, name, sizep);
121 else {
122 if (sizep != NULL)
123 *sizep = defsize;
124 value = defval;
125 }
126 return (value);
127 }
128
129