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/libprop/prop_ingest.c

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    1 /*      $NetBSD: prop_ingest.c,v 1.3 2008/04/28 20:22:53 martin Exp $   */
    2 
    3 /*-
    4  * Copyright (c) 2006 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Jason R. Thorpe.
    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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   29  * POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 #include <libprop/proplib.h>
   33 #include "prop_object_impl.h"
   34 
   35 struct _prop_ingest_context {
   36         prop_ingest_error_t     pic_error;
   37         prop_type_t             pic_type;
   38         const char *            pic_key;
   39         void *                  pic_private;
   40 };
   41 
   42 /*
   43  * prop_ingest_context_alloc --
   44  *      Allocate and initialize an ingest context.
   45  */
   46 prop_ingest_context_t
   47 prop_ingest_context_alloc(void *private)
   48 {
   49         prop_ingest_context_t ctx;
   50 
   51         ctx = _PROP_MALLOC(sizeof(*ctx), M_TEMP);
   52         if (ctx != NULL) {
   53                 ctx->pic_error = PROP_INGEST_ERROR_NO_ERROR;
   54                 ctx->pic_type = PROP_TYPE_UNKNOWN;
   55                 ctx->pic_key = NULL;
   56                 ctx->pic_private = private;
   57         }
   58         return (ctx);
   59 }
   60 
   61 /*
   62  * prop_ingest_context_free --
   63  *      Free an ingest context.
   64  */
   65 void
   66 prop_ingest_context_free(prop_ingest_context_t ctx)
   67 {
   68 
   69         _PROP_FREE(ctx, M_TEMP);
   70 }
   71 
   72 /*
   73  * prop_ingest_context_error --
   74  *      Get the error code from an ingest context.
   75  */
   76 prop_ingest_error_t
   77 prop_ingest_context_error(prop_ingest_context_t ctx)
   78 {
   79 
   80         return (ctx->pic_error);
   81 }
   82 
   83 /*
   84  * prop_ingest_context_type --
   85  *      Return the type of last object visisted by an ingest context.
   86  */
   87 prop_type_t
   88 prop_ingest_context_type(prop_ingest_context_t ctx)
   89 {
   90 
   91         return (ctx->pic_type);
   92 }
   93 
   94 /*
   95  * prop_ingest_context_key --
   96  *      Return the last key looked up by an ingest context.
   97  */
   98 const char *
   99 prop_ingest_context_key(prop_ingest_context_t ctx)
  100 {
  101 
  102         return (ctx->pic_key);
  103 }
  104 
  105 /*
  106  * prop_ingest_context_private --
  107  *      Return the caller-private data associated with an ingest context.
  108  */
  109 void *
  110 prop_ingest_context_private(prop_ingest_context_t ctx)
  111 {
  112 
  113         return (ctx->pic_private);
  114 }
  115 
  116 /*
  117  * prop_dictionary_ingest --
  118  *      Ingest a dictionary using handlers for each object to translate
  119  *      into an arbitrary binary format.
  120  */
  121 bool
  122 prop_dictionary_ingest(prop_dictionary_t dict,
  123                        const prop_ingest_table_entry rules[],
  124                        prop_ingest_context_t ctx)
  125 {
  126         const prop_ingest_table_entry *pite;
  127         prop_object_t obj;
  128 
  129         ctx->pic_error = PROP_INGEST_ERROR_NO_ERROR;
  130 
  131         for (pite = rules; pite->pite_key != NULL; pite++) {
  132                 ctx->pic_key = pite->pite_key;
  133                 obj = prop_dictionary_get(dict, pite->pite_key);
  134                 ctx->pic_type = prop_object_type(obj);
  135                 if (obj == NULL) {
  136                         if (pite->pite_flags & PROP_INGEST_FLAG_OPTIONAL) {
  137                                 if ((*pite->pite_handler)(ctx, NULL) == false) {
  138                                         ctx->pic_error =
  139                                             PROP_INGEST_ERROR_HANDLER_FAILED;
  140                                         return (false);
  141                                 }
  142                                 continue;
  143                         }
  144                         ctx->pic_error = PROP_INGEST_ERROR_NO_KEY;
  145                         return (false);
  146                 }
  147                 if (ctx->pic_type != pite->pite_type &&
  148                     pite->pite_type != PROP_TYPE_UNKNOWN) {
  149                         ctx->pic_error = PROP_INGEST_ERROR_WRONG_TYPE;
  150                         return (false);
  151                 }
  152                 if ((*pite->pite_handler)(ctx, obj) == false) {
  153                         ctx->pic_error = PROP_INGEST_ERROR_HANDLER_FAILED;
  154                         return (false);
  155                 }
  156         }
  157 
  158         return (true);
  159 }

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