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/*
* Data descriptor functions
*
* Copyright (C) 2011-2016, Joachim Metz <joachim.metz@gmail.com>
*
* Refer to AUTHORS for acknowledgements.
*
* This software is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this software. If not, see <http://www.gnu.org/licenses/>.
*/
#include <common.h>
#include <memory.h>
#include <types.h>
#include "libwrc_data_descriptor.h"
#include "libwrc_libcerror.h"
/* Creates a data descriptor
* Make sure the value data_descriptor is referencing, is set to NULL
* Returns 1 if successful or -1 on error
*/
int libwrc_data_descriptor_initialize(
libwrc_data_descriptor_t **data_descriptor,
libcerror_error_t **error )
{
static char *function = "libwrc_data_descriptor_initialize";
if( data_descriptor == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid data descriptor.",
function );
return( -1 );
}
if( *data_descriptor != NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
"%s: invalid data descriptor value already set.",
function );
return( -1 );
}
*data_descriptor = memory_allocate_structure(
libwrc_data_descriptor_t );
if( *data_descriptor == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_MEMORY,
LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
"%s: unable to create data descriptor.",
function );
goto on_error;
}
if( memory_set(
*data_descriptor,
0,
sizeof( libwrc_data_descriptor_t ) ) == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_MEMORY,
LIBCERROR_MEMORY_ERROR_SET_FAILED,
"%s: unable to clear data descriptor.",
function );
goto on_error;
}
return( 1 );
on_error:
if( *data_descriptor != NULL )
{
memory_free(
*data_descriptor );
*data_descriptor = NULL;
}
return( -1 );
}
/* Frees a data descriptor
* Returns 1 if successful or -1 on error
*/
int libwrc_data_descriptor_free(
libwrc_data_descriptor_t **data_descriptor,
libcerror_error_t **error )
{
static char *function = "libwrc_data_descriptor_free";
if( data_descriptor == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid data descriptor.",
function );
return( -1 );
}
if( *data_descriptor != NULL )
{
memory_free(
*data_descriptor );
*data_descriptor = NULL;
}
return( 1 );
}
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