1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 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 } 103 104 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