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libfvalue_value_entry.c
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libfvalue_value_entry.c
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/*
* Value entry functions
*
* Copyright (c) 2010-2012, Joachim Metz <jbmetz@users.sourceforge.net>
*
* 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 <liberror.h>
#include "libfvalue_value_entry.h"
/* Initialize a value entry
* Returns 1 if successful or -1 on error
*/
int libfvalue_value_entry_initialize(
libfvalue_value_entry_t **value_entry,
liberror_error_t **error )
{
static char *function = "libfvalue_value_entry_initialize";
if( value_entry == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid value entry.",
function );
return( -1 );
}
if( *value_entry != NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_RUNTIME,
LIBERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
"%s: invalid value entry value already set.",
function );
return( -1 );
}
*value_entry = memory_allocate_structure(
libfvalue_value_entry_t );
if( *value_entry == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_MEMORY,
LIBERROR_MEMORY_ERROR_INSUFFICIENT,
"%s: unable to create value entry.",
function );
goto on_error;
}
if( memory_set(
*value_entry,
0,
sizeof( libfvalue_value_entry_t ) ) == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_MEMORY,
LIBERROR_MEMORY_ERROR_SET_FAILED,
"%s: unable to clear value entry.",
function );
goto on_error;
}
return( 1 );
on_error:
if( *value_entry != NULL )
{
memory_free(
*value_entry );
*value_entry = NULL;
}
return( -1 );
}
/* Frees a value entry
* Returns 1 if successful or -1 on error
*/
int libfvalue_value_entry_free(
libfvalue_value_entry_t **value_entry,
liberror_error_t **error )
{
static char *function = "libfvalue_value_entry_free";
if( value_entry == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid value entry.",
function );
return( -1 );
}
if( *value_entry != NULL )
{
memory_free(
*value_entry );
*value_entry = NULL;
}
return( 1 );
}
/* Clones a value entry
* Returns 1 if successful or -1 on error
*/
int libfvalue_value_entry_clone(
libfvalue_value_entry_t **destination_value_entry,
libfvalue_value_entry_t *source_value_entry,
liberror_error_t **error )
{
static char *function = "libfvalue_value_entry_clone";
if( destination_value_entry == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid destination value entry.",
function );
return( -1 );
}
if( *destination_value_entry != NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_RUNTIME,
LIBERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
"%s: destination value entry already set.",
function );
return( -1 );
}
if( source_value_entry == NULL )
{
*destination_value_entry = NULL;
return( 1 );
}
*destination_value_entry = memory_allocate_structure(
libfvalue_value_entry_t );
if( *destination_value_entry == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_MEMORY,
LIBERROR_MEMORY_ERROR_INSUFFICIENT,
"%s: unable to create destination value entry.",
function );
goto on_error;
}
if( memory_copy(
*destination_value_entry,
source_value_entry,
sizeof( libfvalue_value_entry_t ) ) == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_MEMORY,
LIBERROR_MEMORY_ERROR_COPY_FAILED,
"%s: unable to copy value entry.",
function );
goto on_error;
}
return( 1 );
on_error:
if( *destination_value_entry != NULL )
{
memory_free(
*destination_value_entry );
*destination_value_entry = NULL;
}
return( -1 );
}

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