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/*
* Memory range functions
*
* Copyright (C) 2009-2018, 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>
#if defined( HAVE_UNISTD_H )
#include <unistd.h>
#endif
#include "libbfio_definitions.h"
#include "libbfio_handle.h"
#include "libbfio_libcerror.h"
#include "libbfio_memory_range.h"
#include "libbfio_memory_range_io_handle.h"
#include "libbfio_types.h"
/* Creates a memory range handle
* Make sure the value handle is referencing, is set to NULL
* Returns 1 if successful or -1 on error
*/
int libbfio_memory_range_initialize(
libbfio_handle_t **handle,
libcerror_error_t **error )
{
libbfio_memory_range_io_handle_t *memory_range_io_handle = NULL;
static char *function = "libbfio_memory_range_initialize";
if( handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid handle.",
function );
return( -1 );
}
if( *handle != NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
"%s: invalid handle value already set.",
function );
return( -1 );
}
if( libbfio_memory_range_io_handle_initialize(
&memory_range_io_handle,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
"%s: unable to create memory range IO handle.",
function );
goto on_error;
}
if( libbfio_handle_initialize(
handle,
(intptr_t *) memory_range_io_handle,
(int (*)(intptr_t **, libcerror_error_t **)) libbfio_memory_range_io_handle_free,
(int (*)(intptr_t **, intptr_t *, libcerror_error_t **)) libbfio_memory_range_io_handle_clone,
(int (*)(intptr_t *, int, libcerror_error_t **)) libbfio_memory_range_io_handle_open,
(int (*)(intptr_t *, libcerror_error_t **)) libbfio_memory_range_io_handle_close,
(ssize_t (*)(intptr_t *, uint8_t *, size_t, libcerror_error_t **)) libbfio_memory_range_io_handle_read_buffer,
(ssize_t (*)(intptr_t *, const uint8_t *, size_t, libcerror_error_t **)) libbfio_memory_range_io_handle_write_buffer,
(off64_t (*)(intptr_t *, off64_t, int, libcerror_error_t **)) libbfio_memory_range_io_handle_seek_offset,
(int (*)(intptr_t *, libcerror_error_t **)) libbfio_memory_range_io_handle_exists,
(int (*)(intptr_t *, libcerror_error_t **)) libbfio_memory_range_io_handle_is_open,
(int (*)(intptr_t *, size64_t *, libcerror_error_t **)) libbfio_memory_range_io_handle_get_size,
LIBBFIO_FLAG_IO_HANDLE_MANAGED | LIBBFIO_FLAG_IO_HANDLE_CLONE_BY_FUNCTION,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
"%s: unable to create handle.",
function );
goto on_error;
}
return( 1 );
on_error:
if( memory_range_io_handle != NULL )
{
libbfio_memory_range_io_handle_free(
&memory_range_io_handle,
NULL );
}
return( -1 );
}
/* Retrieves the range of the memory range handle
* Returns 1 if succesful or -1 on error
*/
int libbfio_memory_range_get(
libbfio_handle_t *handle,
uint8_t **range_start,
size_t *range_size,
libcerror_error_t **error )
{
libbfio_internal_handle_t *internal_handle = NULL;
static char *function = "libbfio_memory_range_get";
if( handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid handle.",
function );
return( -1 );
}
internal_handle = (libbfio_internal_handle_t *) handle;
if( libbfio_memory_range_io_handle_get(
(libbfio_memory_range_io_handle_t *) internal_handle->io_handle,
range_start,
range_size,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve range from file IO handle.",
function );
return( -1 );
}
return( 1 );
}
/* Sets the range of the memory range handle
* Returns 1 if succesful or -1 on error
*/
int libbfio_memory_range_set(
libbfio_handle_t *handle,
uint8_t *range_start,
size_t range_size,
libcerror_error_t **error )
{
libbfio_internal_handle_t *internal_handle = NULL;
static char *function = "libbfio_memory_range_set";
if( handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid handle.",
function );
return( -1 );
}
internal_handle = (libbfio_internal_handle_t *) handle;
if( libbfio_memory_range_io_handle_set(
(libbfio_memory_range_io_handle_t *) internal_handle->io_handle,
range_start,
range_size,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_SET_FAILED,
"%s: unable to set range in file IO handle.",
function );
return( -1 );
}
return( 1 );
}
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