Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/sys/dnv.h
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1 /*- 2 * Copyright (c) 2013 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Pawel Jakub Dawidek under sponsorship from 6 * the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: releng/10.3/sys/sys/dnv.h 292973 2015-12-31 03:28:14Z ngie $ 30 */ 31 32 #ifndef _DNV_H_ 33 #define _DNV_H_ 34 35 #include <sys/cdefs.h> 36 37 #ifndef _KERNEL 38 #include <stdarg.h> 39 #include <stdbool.h> 40 #include <stdint.h> 41 #endif 42 43 #ifndef _NVLIST_T_DECLARED 44 #define _NVLIST_T_DECLARED 45 struct nvlist; 46 47 typedef struct nvlist nvlist_t; 48 #endif 49 50 __BEGIN_DECLS 51 52 /* 53 * The dnvlist_get functions returns value associated with the given name. 54 * If it returns a pointer, the pointer represents internal buffer and should 55 * not be freed by the caller. 56 * If no element of the given name and type exists, the function will return 57 * provided default value. 58 */ 59 60 bool dnvlist_get_bool(const nvlist_t *nvl, const char *name, bool defval); 61 uint64_t dnvlist_get_number(const nvlist_t *nvl, const char *name, uint64_t defval); 62 const char *dnvlist_get_string(const nvlist_t *nvl, const char *name, const char *defval); 63 const nvlist_t *dnvlist_get_nvlist(const nvlist_t *nvl, const char *name, const nvlist_t *defval); 64 int dnvlist_get_descriptor(const nvlist_t *nvl, const char *name, int defval); 65 const void *dnvlist_get_binary(const nvlist_t *nvl, const char *name, size_t *sizep, const void *defval, size_t defsize); 66 67 #ifndef _KERNEL 68 bool dnvlist_getf_bool(const nvlist_t *nvl, bool defval, const char *namefmt, ...) __printflike(3, 4); 69 uint64_t dnvlist_getf_number(const nvlist_t *nvl, uint64_t defval, const char *namefmt, ...) __printflike(3, 4); 70 const char *dnvlist_getf_string(const nvlist_t *nvl, const char *defval, const char *namefmt, ...) __printflike(3, 4); 71 const nvlist_t *dnvlist_getf_nvlist(const nvlist_t *nvl, const nvlist_t *defval, const char *namefmt, ...) __printflike(3, 4); 72 int dnvlist_getf_descriptor(const nvlist_t *nvl, int defval, const char *namefmt, ...) __printflike(3, 4); 73 const void *dnvlist_getf_binary(const nvlist_t *nvl, size_t *sizep, const void *defval, size_t defsize, const char *namefmt, ...) __printflike(5, 6); 74 75 bool dnvlist_getv_bool(const nvlist_t *nvl, bool defval, const char *namefmt, va_list nameap) __printflike(3, 0); 76 uint64_t dnvlist_getv_number(const nvlist_t *nvl, uint64_t defval, const char *namefmt, va_list nameap) __printflike(3, 0); 77 const char *dnvlist_getv_string(const nvlist_t *nvl, const char *defval, const char *namefmt, va_list nameap) __printflike(3, 0); 78 const nvlist_t *dnvlist_getv_nvlist(const nvlist_t *nvl, const nvlist_t *defval, const char *namefmt, va_list nameap) __printflike(3, 0); 79 int dnvlist_getv_descriptor(const nvlist_t *nvl, int defval, const char *namefmt, va_list nameap) __printflike(3, 0); 80 const void *dnvlist_getv_binary(const nvlist_t *nvl, size_t *sizep, const void *defval, size_t defsize, const char *namefmt, va_list nameap) __printflike(5, 0); 81 #endif 82 83 /* 84 * The dnvlist_take functions returns value associated with the given name and 85 * remove corresponding nvpair. 86 * If it returns a pointer, the caller has to free it. 87 * If no element of the given name and type exists, the function will return 88 * provided default value. 89 */ 90 91 bool dnvlist_take_bool(nvlist_t *nvl, const char *name, bool defval); 92 uint64_t dnvlist_take_number(nvlist_t *nvl, const char *name, uint64_t defval); 93 char *dnvlist_take_string(nvlist_t *nvl, const char *name, char *defval); 94 nvlist_t *dnvlist_take_nvlist(nvlist_t *nvl, const char *name, nvlist_t *defval); 95 int dnvlist_take_descriptor(nvlist_t *nvl, const char *name, int defval); 96 void *dnvlist_take_binary(nvlist_t *nvl, const char *name, size_t *sizep, void *defval, size_t defsize); 97 98 #ifndef _KERNEL 99 bool dnvlist_takef_bool(nvlist_t *nvl, bool defval, const char *namefmt, ...) __printflike(3, 4); 100 uint64_t dnvlist_takef_number(nvlist_t *nvl, uint64_t defval, const char *namefmt, ...) __printflike(3, 4); 101 char *dnvlist_takef_string(nvlist_t *nvl, char *defval, const char *namefmt, ...) __printflike(3, 4); 102 nvlist_t *dnvlist_takef_nvlist(nvlist_t *nvl, nvlist_t *defval, const char *namefmt, ...) __printflike(3, 4); 103 int dnvlist_takef_descriptor(nvlist_t *nvl, int defval, const char *namefmt, ...) __printflike(3, 4); 104 void *dnvlist_takef_binary(nvlist_t *nvl, size_t *sizep, void *defval, size_t defsize, const char *namefmt, ...) __printflike(5, 6); 105 106 bool dnvlist_takev_bool(nvlist_t *nvl, bool defval, const char *namefmt, va_list nameap) __printflike(3, 0); 107 uint64_t dnvlist_takev_number(nvlist_t *nvl, uint64_t defval, const char *namefmt, va_list nameap) __printflike(3, 0); 108 char *dnvlist_takev_string(nvlist_t *nvl, char *defval, const char *namefmt, va_list nameap) __printflike(3, 0); 109 nvlist_t *dnvlist_takev_nvlist(nvlist_t *nvl, nvlist_t *defval, const char *namefmt, va_list nameap) __printflike(3, 0); 110 int dnvlist_takev_descriptor(nvlist_t *nvl, int defval, const char *namefmt, va_list nameap) __printflike(3, 0); 111 void *dnvlist_takev_binary(nvlist_t *nvl, size_t *sizep, void *defval, size_t defsize, const char *namefmt, va_list nameap) __printflike(5, 0); 112 #endif 113 114 __END_DECLS 115 116 #endif /* !_DNV_H_ */
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