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) \ 58 ftype \ 59 dnvlist_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 68 DNVLIST_GET(bool, bool) 69 DNVLIST_GET(uint64_t, number) 70 DNVLIST_GET(const char *, string) 71 DNVLIST_GET(const nvlist_t *, nvlist) 72 #ifndef _KERNEL 73 DNVLIST_GET(int, descriptor) 74 #endif 75 76 #undef DNVLIST_GET 77 78 const void * 79 dnvlist_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) \ 95 ftype \ 96 dnvlist_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 } 104 105 DNVLIST_TAKE(bool, bool) 106 DNVLIST_TAKE(uint64_t, number) 107 DNVLIST_TAKE(char *, string) 108 DNVLIST_TAKE(nvlist_t *, nvlist) 109 #ifndef _KERNEL 110 DNVLIST_TAKE(int, descriptor) 111 #endif 112 113 #undef DNVLIST_TAKE 114 115 void * 116 dnvlist_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