The Design and Implementation of the FreeBSD Operating System, Second Edition
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/10.4/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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