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libbfio_file_range.c
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/*
* File range functions
*
* Copyright (c) 2009-2013, Joachim Metz <[email protected]>
*
* 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 "libbfio_definitions.h"
#include "libbfio_file.h"
#include "libbfio_file_range.h"
#include "libbfio_handle.h"
#include "libbfio_libcerror.h"
#include "libbfio_types.h"
/* Initializes the file range IO handle
* Returns 1 if successful or -1 on error
*/
int libbfio_file_range_io_handle_initialize(
libbfio_file_range_io_handle_t **file_range_io_handle,
libcerror_error_t **error )
{
static char *function = "libbfio_file_range_io_handle_initialize";
if( file_range_io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid file range IO handle.",
function );
return( -1 );
}
if( *file_range_io_handle != NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
"%s: invalid file range IO handle value already set.",
function );
return( -1 );
}
*file_range_io_handle = memory_allocate_structure(
libbfio_file_range_io_handle_t );
if( *file_range_io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_MEMORY,
LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
"%s: unable to create file range IO handle.",
function );
goto on_error;
}
if( memory_set(
*file_range_io_handle,
0,
sizeof( libbfio_file_range_io_handle_t ) ) == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_MEMORY,
LIBCERROR_MEMORY_ERROR_SET_FAILED,
"%s: unable to clear file range IO handle.",
function );
goto on_error;
}
if( libbfio_file_io_handle_initialize(
&( ( *file_range_io_handle )->file_io_handle ),
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
"%s: unable to initialize file IO handle.",
function );
goto on_error;
}
return( 1 );
on_error:
if( *file_range_io_handle != NULL )
{
memory_free(
*file_range_io_handle );
*file_range_io_handle = NULL;
}
return( -1 );
}
/* Initializes the file range handle
* Returns 1 if successful or -1 on error
*/
int libbfio_file_range_initialize(
libbfio_handle_t **handle,
libcerror_error_t **error )
{
libbfio_file_range_io_handle_t *file_range_io_handle = NULL;
static char *function = "libbfio_range_file_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_file_range_io_handle_initialize(
&file_range_io_handle,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
"%s: unable to create file range IO handle.",
function );
goto on_error;
}
if( libbfio_handle_initialize(
handle,
(intptr_t *) file_range_io_handle,
(int (*)(intptr_t **, libcerror_error_t **)) libbfio_file_range_io_handle_free,
(int (*)(intptr_t **, intptr_t *, libcerror_error_t **)) libbfio_file_range_io_handle_clone,
(int (*)(intptr_t *, int, libcerror_error_t **)) libbfio_file_range_open,
(int (*)(intptr_t *, libcerror_error_t **)) libbfio_file_range_close,
(ssize_t (*)(intptr_t *, uint8_t *, size_t, libcerror_error_t **)) libbfio_file_range_read,
(ssize_t (*)(intptr_t *, const uint8_t *, size_t, libcerror_error_t **)) libbfio_file_range_write,
(off64_t (*)(intptr_t *, off64_t, int, libcerror_error_t **)) libbfio_file_range_seek_offset,
(int (*)(intptr_t *, libcerror_error_t **)) libbfio_file_range_exists,
(int (*)(intptr_t *, libcerror_error_t **)) libbfio_file_range_is_open,
(int (*)(intptr_t *, size64_t *, libcerror_error_t **)) libbfio_file_range_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( file_range_io_handle != NULL )
{
libbfio_file_range_io_handle_free(
&file_range_io_handle,
NULL );
}
return( -1 );
}
/* Frees the file range IO handle and its attributes
* Returns 1 if succesful or -1 on error
*/
int libbfio_file_range_io_handle_free(
libbfio_file_range_io_handle_t **file_range_io_handle,
libcerror_error_t **error )
{
static char *function = "libbfio_file_range_io_handle_free";
int result = 1;
if( file_range_io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid file range IO handle.",
function );
return( -1 );
}
if( *file_range_io_handle != NULL )
{
if( libbfio_file_io_handle_free(
&( ( *file_range_io_handle )->file_io_handle ),
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,
"%s: unable to free file IO handle.",
function );
result = -1;
}
memory_free(
*file_range_io_handle );
*file_range_io_handle = NULL;
}
return( result );
}
/* Clones (duplicates) the file range IO handle and its attributes
* Returns 1 if succesful or -1 on error
*/
int libbfio_file_range_io_handle_clone(
libbfio_file_range_io_handle_t **destination_file_range_io_handle,
libbfio_file_range_io_handle_t *source_file_range_io_handle,
libcerror_error_t **error )
{
static char *function = "libbfio_file_range_io_handle_clone";
if( destination_file_range_io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid destination file range IO handle.",
function );
return( -1 );
}
if( *destination_file_range_io_handle != NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
"%s: destination file range IO handle already set.",
function );
return( -1 );
}
if( source_file_range_io_handle == NULL )
{
*destination_file_range_io_handle = NULL;
return( 1 );
}
*destination_file_range_io_handle = memory_allocate_structure(
libbfio_file_range_io_handle_t );
if( *destination_file_range_io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_MEMORY,
LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
"%s: unable to create destination file range IO handle.",
function );
goto on_error;
}
if( memory_set(
*destination_file_range_io_handle,
0,
sizeof( libbfio_file_range_io_handle_t ) ) == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_MEMORY,
LIBCERROR_MEMORY_ERROR_SET_FAILED,
"%s: unable to clear destination file range IO handle.",
function );
memory_free(
*destination_file_range_io_handle );
*destination_file_range_io_handle = NULL;
return( -1 );
}
if( libbfio_file_io_handle_clone(
&( ( *destination_file_range_io_handle )->file_io_handle ),
source_file_range_io_handle->file_io_handle,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
"%s: unable to create file IO handle.",
function );
goto on_error;
}
( *destination_file_range_io_handle )->range_offset = source_file_range_io_handle->range_offset;
( *destination_file_range_io_handle )->range_size = source_file_range_io_handle->range_size;
return( 1 );
on_error:
if( *destination_file_range_io_handle != NULL )
{
libbfio_file_range_io_handle_free(
destination_file_range_io_handle,
NULL );
}
return( -1 );
}
/* Retrieves the name size of the file range handle
* The name size includes the end of string character
* Returns 1 if succesful or -1 on error
*/
int libbfio_file_range_get_name_size(
libbfio_handle_t *handle,
size_t *name_size,
libcerror_error_t **error )
{
libbfio_internal_handle_t *internal_handle = NULL;
libbfio_file_range_io_handle_t *file_range_io_handle = NULL;
static char *function = "libbfio_file_range_get_name_size";
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( internal_handle->io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
"%s: invalid handle - missing IO handle.",
function );
return( -1 );
}
file_range_io_handle = (libbfio_file_range_io_handle_t *) internal_handle->io_handle;
if( libbfio_file_io_handle_get_name_size(
file_range_io_handle->file_io_handle,
name_size,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve name size from file IO handle.",
function );
return( -1 );
}
return( 1 );
}
/* Retrieves the name of the file range handle
* The name size should include the end of string character
* Returns 1 if succesful or -1 on error
*/
int libbfio_file_range_get_name(
libbfio_handle_t *handle,
char *name,
size_t name_size,
libcerror_error_t **error )
{
libbfio_internal_handle_t *internal_handle = NULL;
libbfio_file_range_io_handle_t *file_range_io_handle = NULL;
static char *function = "libbfio_file_range_get_name";
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( internal_handle->io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
"%s: invalid handle - missing IO handle.",
function );
return( -1 );
}
file_range_io_handle = (libbfio_file_range_io_handle_t *) internal_handle->io_handle;
if( libbfio_file_io_handle_get_name(
file_range_io_handle->file_io_handle,
name,
name_size,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve name from file IO handle.",
function );
return( -1 );
}
return( 1 );
}
/* Sets the name for the file range handle
* Returns 1 if succesful or -1 on error
*/
int libbfio_file_range_set_name(
libbfio_handle_t *handle,
const char *name,
size_t name_length,
libcerror_error_t **error )
{
libbfio_internal_handle_t *internal_handle = NULL;
libbfio_file_range_io_handle_t *file_range_io_handle = NULL;
static char *function = "libbfio_file_range_set_name";
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( internal_handle->io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
"%s: invalid handle - missing IO handle.",
function );
return( -1 );
}
file_range_io_handle = (libbfio_file_range_io_handle_t *) internal_handle->io_handle;
if( libbfio_file_io_handle_set_name(
file_range_io_handle->file_io_handle,
name,
name_length,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_SET_FAILED,
"%s: unable to set name in file IO handle.",
function );
return( -1 );
}
return( 1 );
}
#if defined( HAVE_WIDE_CHARACTER_TYPE )
/* Retrieves the name size of the file range handle
* The name size includes the end of string character
* Returns 1 if succesful or -1 on error
*/
int libbfio_file_range_get_name_size_wide(
libbfio_handle_t *handle,
size_t *name_size,
libcerror_error_t **error )
{
libbfio_internal_handle_t *internal_handle = NULL;
libbfio_file_range_io_handle_t *file_range_io_handle = NULL;
static char *function = "libbfio_file_range_get_name_size_wide";
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( internal_handle->io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
"%s: invalid handle - missing IO handle.",
function );
return( -1 );
}
file_range_io_handle = (libbfio_file_range_io_handle_t *) internal_handle->io_handle;
if( libbfio_file_io_handle_get_name_size_wide(
file_range_io_handle->file_io_handle,
name_size,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve name size from file IO handle.",
function );
return( -1 );
}
return( 1 );
}
/* Retrieves the name of the file range handle
* The name size should include the end of string character
* Returns 1 if succesful or -1 on error
*/
int libbfio_file_range_get_name_wide(
libbfio_handle_t *handle,
wchar_t *name,
size_t name_size,
libcerror_error_t **error )
{
libbfio_internal_handle_t *internal_handle = NULL;
libbfio_file_range_io_handle_t *file_range_io_handle = NULL;
static char *function = "libbfio_file_range_get_name_wide";
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( internal_handle->io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
"%s: invalid handle - missing IO handle.",
function );
return( -1 );
}
file_range_io_handle = (libbfio_file_range_io_handle_t *) internal_handle->io_handle;
if( libbfio_file_io_handle_get_name_wide(
file_range_io_handle->file_io_handle,
name,
name_size,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve name from file IO handle.",
function );
return( -1 );
}
return( 1 );
}
/* Sets the name for the file range handle
* Returns 1 if succesful or -1 on error
*/
int libbfio_file_range_set_name_wide(
libbfio_handle_t *handle,
const wchar_t *name,
size_t name_length,
libcerror_error_t **error )
{
libbfio_internal_handle_t *internal_handle = NULL;
libbfio_file_range_io_handle_t *file_range_io_handle = NULL;
static char *function = "libbfio_file_range_set_name_wide";
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( internal_handle->io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
"%s: invalid handle - missing IO handle.",
function );
return( -1 );
}
file_range_io_handle = (libbfio_file_range_io_handle_t *) internal_handle->io_handle;
if( libbfio_file_io_handle_set_name_wide(
file_range_io_handle->file_io_handle,
name,
name_length,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_SET_FAILED,
"%s: unable to set name in file IO handle.",
function );
return( -1 );
}
return( 1 );
}
#endif /* defined( HAVE_WIDE_CHARACTER_TYPE ) */
/* Retrieves the range of the file range handle
* Returns 1 if succesful or -1 on error
*/
int libbfio_file_range_get(
libbfio_handle_t *handle,
off64_t *range_offset,
size64_t *range_size,
libcerror_error_t **error )
{
libbfio_internal_handle_t *internal_handle = NULL;
libbfio_file_range_io_handle_t *file_range_io_handle = NULL;
static char *function = "libbfio_file_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( internal_handle->io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
"%s: invalid handle - missing IO handle.",
function );
return( -1 );
}
file_range_io_handle = (libbfio_file_range_io_handle_t *) internal_handle->io_handle;
if( range_offset == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid range offset.",
function );
return( -1 );
}
if( range_size == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid range size.",
function );
return( -1 );
}
*range_offset = file_range_io_handle->range_offset;
*range_size = file_range_io_handle->range_size;
return( 1 );
}
/* Sets the range of the file range handle
* A range size of 0 represents that the range continues until the end of the file
* Returns 1 if succesful or -1 on error
*/
int libbfio_file_range_set(
libbfio_handle_t *handle,
off64_t range_offset,
size64_t range_size,
libcerror_error_t **error )
{
libbfio_internal_handle_t *internal_handle = NULL;
libbfio_file_range_io_handle_t *file_range_io_handle = NULL;
static char *function = "libbfio_file_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( internal_handle->io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
"%s: invalid handle - missing IO handle.",
function );
return( -1 );
}
file_range_io_handle = (libbfio_file_range_io_handle_t *) internal_handle->io_handle;
if( range_offset < 0 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_VALUE_LESS_THAN_ZERO,
"%s: invalid range offset value less than zero.",
function );
return( -1 );
}
if( range_size > (size64_t) INT64_MAX )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid range size value exceeds maximum.",
function );
return( -1 );
}
file_range_io_handle->range_offset = range_offset;
file_range_io_handle->range_size = range_size;
return( 1 );
}
/* Opens the file range handle
* Returns 1 if successful or -1 on error
*/
int libbfio_file_range_open(
libbfio_file_range_io_handle_t *file_range_io_handle,
int access_flags,
libcerror_error_t **error )
{
static char *function = "libbfio_file_range_open";
size64_t file_size = 0;
if( file_range_io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid file range IO handle.",
function );
return( -1 );
}
if( libbfio_file_open(
file_range_io_handle->file_io_handle,
access_flags,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_OPEN_FAILED,
"%s: unable to open file IO handle.",
function );
return( -1 );
}
if( libbfio_file_get_size(
file_range_io_handle->file_io_handle,
&file_size,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve size from file IO handle.",
function );
return( -1 );
}
if( file_range_io_handle->range_offset >= (off64_t) file_size )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS,
"%s: invalid range offset value exceeds file size.",
function );
return( -1 );
}
file_size -= file_range_io_handle->range_offset;
if( file_range_io_handle->range_size > file_size )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS,
"%s: invalid range size value exceeds file size.",
function );
return( -1 );
}
if( libbfio_file_seek_offset(
file_range_io_handle->file_io_handle,
file_range_io_handle->range_offset,
SEEK_SET,
error ) == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_SEEK_FAILED,
"%s: unable to seek range offset in file IO handle.",
function );
return( -1 );
}
return( 1 );
}
/* Closes the file range handle
* Returns 0 if successful or -1 on error
*/
int libbfio_file_range_close(
libbfio_file_range_io_handle_t *file_range_io_handle,
libcerror_error_t **error )
{
static char *function = "libbfio_file_range_close";
if( file_range_io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid file range IO handle.",
function );
return( -1 );
}
if( libbfio_file_close(
file_range_io_handle->file_io_handle,
error ) != 0 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_CLOSE_FAILED,
"%s: unable to close file IO handle.",
function );
return( -1 );
}
return( 0 );
}
/* Reads a buffer from the file range handle
* Returns the number of bytes read if successful, or -1 on error
*/
ssize_t libbfio_file_range_read(
libbfio_file_range_io_handle_t *file_range_io_handle,
uint8_t *buffer,
size_t size,
libcerror_error_t **error )
{
static char *function = "libbfio_file_range_read";
off64_t file_offset = 0;
ssize_t read_count = 0;
if( file_range_io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid file range IO handle.",
function );
return( -1 );
}
file_offset = libbfio_file_seek_offset(
file_range_io_handle->file_io_handle,
0,
SEEK_CUR,
error );
if( file_offset == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve current offset from file IO handle.",
function );
return( -1 );
}
if( file_offset < file_range_io_handle->range_offset )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
"%s: invalid file offset value out of bounds.",