/*

 * File functions

 *

 * Copyright (C) 2013-2023, Joachim Metz <joachim.metz@gmail.com>

 *

 * Refer to AUTHORS for acknowledgements.

 *

 * This program 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 program 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 program.  If not, see <https://www.gnu.org/licenses/>.

 */

#include <common.h>

#include <memory.h>

#include <narrow_string.h>

#include <types.h>

#include <wide_string.h>

#include "libcreg_codepage.h"

#include "libcreg_data_block.h"

#include "libcreg_debug.h"

#include "libcreg_definitions.h"

#include "libcreg_file.h"

#include "libcreg_io_handle.h"

#include "libcreg_key.h"

#include "libcreg_key_item.h"

#include "libcreg_key_navigation.h"

#include "libcreg_key_tree.h"

#include "libcreg_libbfio.h"

#include "libcreg_libcerror.h"

#include "libcreg_libcnotify.h"

#include "libcreg_libcthreads.h"

#include "libcreg_libfcache.h"

#include "libcreg_libuna.h"

#include "creg_file_header.h"

#include "creg_key_navigation.h"

/* Creates a file

 * Make sure the value file is referencing, is set to NULL

 * Returns 1 if successful or -1 on error

 */

int libcreg_file_initialize(

     libcreg_file_t **file,

     libcerror_error_t **error )

{

  libcreg_internal_file_t *internal_file = NULL;

  static char *function                  = "libcreg_file_initialize";

  if( file == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid file.",

     function );

    return( -1 );

  }

  if( *file != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid file value already set.",

     function );

    return( -1 );

  }

  internal_file = memory_allocate_structure(

                   libcreg_internal_file_t );

  if( internal_file == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

     "%s: unable to create file.",

     function );

    goto on_error;

  }

  if( memory_set(

       internal_file,

       0,

       sizeof( libcreg_internal_file_t ) ) == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_SET_FAILED,

     "%s: unable to clear file.",

     function );

    goto on_error;

  }

  if( libcreg_io_handle_initialize(

       &( internal_file->io_handle ),

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

     "%s: unable to create IO handle.",

     function );

    goto on_error;

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_initialize(

       &( internal_file->read_write_lock ),

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

     "%s: unable to initialize read/write lock.",

     function );

    goto on_error;

  }

#endif

  *file = (libcreg_file_t *) internal_file;

  return( 1 );

on_error:

  if( internal_file != NULL )

  {

    memory_free(

     internal_file );

  }

  return( -1 );

}

/* Frees a file

 * Returns 1 if successful or -1 on error

 */

int libcreg_file_free(

     libcreg_file_t **file,

     libcerror_error_t **error )

{

  libcreg_internal_file_t *internal_file = NULL;

  static char *function                  = "libcreg_file_free";

  int result                             = 1;

  if( file == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid file.",

     function );

    return( -1 );

  }

  if( *file != NULL )

  {

    internal_file = (libcreg_internal_file_t *) *file;

    if( internal_file->file_io_handle != NULL )

    {

      if( libcreg_file_close(

           *file,

           error ) != 0 )

      {

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_IO,

         LIBCERROR_IO_ERROR_CLOSE_FAILED,

         "%s: unable to close file.",

         function );

        result = -1;

      }

    }

    *file = NULL;

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

    if( libcthreads_read_write_lock_free(

         &( internal_file->read_write_lock ),

         error ) != 1 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,

       "%s: unable to free read/write lock.",

       function );

      result = -1;

    }

#endif

    if( libcreg_io_handle_free(

         &( internal_file->io_handle ),

         error ) != 1 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,

       "%s: unable to free IO handle.",

       function );

      result = -1;

    }

    memory_free(

     internal_file );

  }

  return( result );

}

/* Signals the libcreg file to abort its current activity

 * Returns 1 if successful or -1 on error

 */

int libcreg_file_signal_abort(

     libcreg_file_t *file,

     libcerror_error_t **error )

{

  static char *function = "libcreg_file_signal_abort";

  if( file == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid file.",

     function );

    return( -1 );

  }

  ( (libcreg_internal_file_t *) file )->abort = 1;

  return( 1 );

}

/* Opens a file

 * Returns 1 if successful or -1 on error

 */

int libcreg_file_open(

     libcreg_file_t *file,

     const char *filename,

     int access_flags,

     libcerror_error_t **error )

{

  libbfio_handle_t *file_io_handle       = NULL;

  libcreg_internal_file_t *internal_file = NULL;

  static char *function                  = "libcreg_file_open";

  size_t filename_length                 = 0;

  if( file == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid file.",

     function );

    return( -1 );

  }

  if( filename == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid filename.",

     function );

    return( -1 );

  }

  if( ( ( access_flags & LIBCREG_ACCESS_FLAG_READ ) == 0 )

   && ( ( access_flags & LIBCREG_ACCESS_FLAG_WRITE ) == 0 ) )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,

     "%s: unsupported access flags.",

     function );

    return( -1 );

  }

  if( ( access_flags & LIBCREG_ACCESS_FLAG_WRITE ) != 0 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,

     "%s: write access currently not supported.",

     function );

    return( -1 );

  }

  internal_file = (libcreg_internal_file_t *) file;

  if( libbfio_file_initialize(

       &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;

  }

#if defined( HAVE_DEBUG_OUTPUT )

  if( libbfio_handle_set_track_offsets_read(

       file_io_handle,

       1,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to set track offsets read in file IO handle.",

     function );

    goto on_error;

  }

#endif

  filename_length = narrow_string_length(

                     filename );

  if( libbfio_file_set_name(

       file_io_handle,

       filename,

       filename_length + 1,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to set filename in file IO handle.",

     function );

    goto on_error;

  }

  if( libcreg_file_open_file_io_handle(

       file,

       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: %s.",

     function,

     filename );

    goto on_error;

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_file->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for writing.",

     function );

    goto on_error;

  }

#endif

  internal_file->file_io_handle_created_in_library = 1;

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_write(

       internal_file->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to release read/write lock for writing.",

     function );

    internal_file->file_io_handle_created_in_library = 0;

    goto on_error;

  }

#endif

  return( 1 );

on_error:

  if( file_io_handle != NULL )

  {

    libbfio_handle_free(

     &file_io_handle,

     NULL );

  }

  return( -1 );

}

#if defined( HAVE_WIDE_CHARACTER_TYPE )

/* Opens a file

 * Returns 1 if successful or -1 on error

 */

int libcreg_file_open_wide(

     libcreg_file_t *file,

     const wchar_t *filename,

     int access_flags,

     libcerror_error_t **error )

{

  libbfio_handle_t *file_io_handle       = NULL;

  libcreg_internal_file_t *internal_file = NULL;

  static char *function                  = "libcreg_file_open_wide";

  size_t filename_length                 = 0;

  if( file == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid file.",

     function );

    return( -1 );

  }

  if( filename == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid filename.",

     function );

    return( -1 );

  }

  if( ( ( access_flags & LIBCREG_ACCESS_FLAG_READ ) == 0 )

   && ( ( access_flags & LIBCREG_ACCESS_FLAG_WRITE ) == 0 ) )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,

     "%s: unsupported access flags.",

     function );

    return( -1 );

  }

  if( ( access_flags & LIBCREG_ACCESS_FLAG_WRITE ) != 0 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,

     "%s: write access currently not supported.",

     function );

    return( -1 );

  }

  internal_file = (libcreg_internal_file_t *) file;

  if( libbfio_file_initialize(

       &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;

  }

#if defined( HAVE_DEBUG_OUTPUT )

  if( libbfio_handle_set_track_offsets_read(

       file_io_handle,

       1,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to set track offsets read in file IO handle.",

     function );

    goto on_error;

  }

#endif

  filename_length = wide_string_length(

                     filename );

  if( libbfio_file_set_name_wide(

       file_io_handle,

       filename,

       filename_length + 1,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to set filename in file IO handle.",

     function );

    goto on_error;

  }

  if( libcreg_file_open_file_io_handle(

       file,

       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: %ls.",

     function,

     filename );

    goto on_error;

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_file->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for writing.",

     function );

    goto on_error;

  }

#endif

  internal_file->file_io_handle_created_in_library = 1;

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_write(

       internal_file->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to release read/write lock for writing.",

     function );

    internal_file->file_io_handle_created_in_library = 0;

    goto on_error;

  }

#endif

  return( 1 );

on_error:

  if( file_io_handle != NULL )

  {

    libbfio_handle_free(

     &file_io_handle,

     NULL );

  }

  return( -1 );

}

#endif /* defined( HAVE_WIDE_CHARACTER_TYPE ) */

/* Opens a file using a Basic File IO (bfio) handle

 * Returns 1 if successful or -1 on error

 */

int libcreg_file_open_file_io_handle(

     libcreg_file_t *file,

     libbfio_handle_t *file_io_handle,

     int access_flags,

     libcerror_error_t **error )

{

  libcreg_internal_file_t *internal_file   = NULL;

  static char *function                    = "libcreg_file_open_file_io_handle";

  uint8_t file_io_handle_opened_in_library = 0;

  int bfio_access_flags                    = 0;

  int file_io_handle_is_open               = 0;

  if( file == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid file.",

     function );

    return( -1 );

  }

  internal_file = (libcreg_internal_file_t *) file;

  if( internal_file->file_io_handle != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid file - file IO handle already set.",

     function );

    return( -1 );

  }

  if( file_io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid file IO handle.",

     function );

    return( -1 );

  }

  if( ( ( access_flags & LIBCREG_ACCESS_FLAG_READ ) == 0 )

   && ( ( access_flags & LIBCREG_ACCESS_FLAG_WRITE ) == 0 ) )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,

     "%s: unsupported access flags.",

     function );

    return( -1 );

  }

  if( ( access_flags & LIBCREG_ACCESS_FLAG_WRITE ) != 0 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,

     "%s: write access currently not supported.",

     function );

    return( -1 );

  }

  if( ( access_flags & LIBCREG_ACCESS_FLAG_READ ) != 0 )

  {

    bfio_access_flags = LIBBFIO_ACCESS_FLAG_READ;

  }

  file_io_handle_is_open = libbfio_handle_is_open(

                            file_io_handle,

                            error );

  if( file_io_handle_is_open == -1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_OPEN_FAILED,

     "%s: unable to open file.",

     function );

    goto on_error;

  }

  else if( file_io_handle_is_open == 0 )

  {

    if( libbfio_handle_open(

         file_io_handle,

         bfio_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 );

      goto on_error;

    }

    file_io_handle_opened_in_library = 1;

  }

  if( libcreg_internal_file_open_read(

       internal_file,

       file_io_handle,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_READ_FAILED,

     "%s: unable to read from file handle.",

     function );

    goto on_error;

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_file->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for writing.",

     function );

    goto on_error;

  }

#endif

  internal_file->file_io_handle                   = file_io_handle;

  internal_file->file_io_handle_opened_in_library = file_io_handle_opened_in_library;

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_write(

       internal_file->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to release read/write lock for writing.",

     function );

    internal_file->file_io_handle                   = NULL;

    internal_file->file_io_handle_opened_in_library = 0;

    goto on_error;

  }

#endif

  return( 1 );

on_error:

  if( file_io_handle_opened_in_library != 0 )

  {

    libbfio_handle_close(

     file_io_handle,

     error );

  }

  return( -1 );

}

/* Closes a file

 * Returns 0 if successful or -1 on error

 */

int libcreg_file_close(

     libcreg_file_t *file,

     libcerror_error_t **error )

{

  libcreg_internal_file_t *internal_file = NULL;

  static char *function                  = "libcreg_file_close";

  int result                             = 0;

  if( file == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid file.",

     function );

    return( -1 );

  }

  internal_file = (libcreg_internal_file_t *) file;

  if( internal_file->file_io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid file - missing file IO handle.",

     function );

    return( -1 );

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_file->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for writing.",

     function );

    return( -1 );

  }

#endif

#if defined( HAVE_DEBUG_OUTPUT )

  if( libcnotify_verbose != 0 )

  {

    if( internal_file->file_io_handle_created_in_library != 0 )

    {

      if( libcreg_debug_print_read_offsets(

           internal_file->file_io_handle,

           error ) != 1 )

      {

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_RUNTIME,

         LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,

         "%s: unable to print the read offsets.",

         function );

      }

    }

  }

#endif

  if( internal_file->file_io_handle_opened_in_library != 0 )

  {

    if( libbfio_handle_close(

         internal_file->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 );

      result = -1;

    }

    internal_file->file_io_handle_opened_in_library = 0;

  }

  if( internal_file->file_io_handle_created_in_library != 0 )

  {

    if( libbfio_handle_free(

         &( internal_file->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;

    }

    internal_file->file_io_handle_created_in_library = 0;

  }

  internal_file->file_io_handle = NULL;

  if( libcreg_io_handle_clear(

       internal_file->io_handle,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,

     "%s: unable to clear IO handle.",

     function );

    result = -1;

  }

  if( internal_file->key_navigation != NULL )

  {

    if( libcreg_key_navigation_free(

         &( internal_file->key_navigation ),

         error ) != 1 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,

       "%s: unable to free key navigation.",

       function );

      result = -1;

    }

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_write(

       internal_file->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to release read/write lock for writing.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

/* Opens a file for reading

 * Returns 1 if successful or -1 on error

 */

int libcreg_internal_file_open_read(

     libcreg_internal_file_t *internal_file,

     libbfio_handle_t *file_io_handle,

     libcerror_error_t **error )

{

  static char *function                 = "libcreg_internal_file_open_read";

  size64_t file_size                    = 0;

  uint16_t header_number_of_data_blocks = 0;

  int number_of_data_blocks             = 0;

  int result                            = 0;

  if( internal_file == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid file.",

     function );

    return( -1 );

  }

  if( internal_file->io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid file - missing IO handle.",

     function );

    return( -1 );

  }

  if( internal_file->key_navigation != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid file - key navigation already set.",

     function );

    return( -1 );

  }

  if( libbfio_handle_get_size(

       file_io_handle,

       &file_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,