/*

 * List element functions

 *

 * Copyright (C) 2006-2024, 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 <types.h>

#include "libcdata_libcerror.h"

#include "libcdata_libcthreads.h"

#include "libcdata_list_element.h"

#include "libcdata_types.h"

/* Creates a list element

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

 * Returns 1 if successful or -1 on error

 */

int libcdata_list_element_initialize(

     libcdata_list_element_t **element,

     libcerror_error_t **error )

{

  libcdata_internal_list_element_t *internal_element = NULL;

  static char *function                              = "libcdata_list_element_initialize";

  if( element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid list element.",

     function );

    return( -1 );

  }

  if( *element != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

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

     function );

    return( -1 );

  }

  internal_element = memory_allocate_structure(

                      libcdata_internal_list_element_t );

  if( internal_element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

     "%s: unable to create list element.",

     function );

    goto on_error;

  }

  if( memory_set(

       internal_element,

       0,

       sizeof( libcdata_internal_list_element_t ) ) == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_SET_FAILED,

     "%s: unable to clear list element.",

     function );

    memory_free(

     internal_element );

    return( -1 );

  }

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_initialize(

       &( internal_element->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

  *element = (libcdata_list_element_t *) internal_element;

  return( 1 );

on_error:

  if( internal_element != NULL )

  {

    memory_free(

     internal_element );

  }

  return( -1 );

}

/* Frees a list element

 * Uses the value_free_function to free the element value

 * Returns 1 if successful or -1 on error

 */

int libcdata_list_element_free(

     libcdata_list_element_t **element,

     int (*value_free_function)(

            intptr_t **value,

            libcerror_error_t **error ),

     libcerror_error_t **error )

{

  libcdata_internal_list_element_t *internal_element = NULL;

  static char *function                              = "libcdata_list_element_free";

  int result                                         = 1;

  if( element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid list element.",

     function );

    return( -1 );

  }

  if( *element != NULL )

  {

    internal_element = (libcdata_internal_list_element_t *) *element;

    if( ( internal_element->previous_element != NULL )

     || ( internal_element->next_element != NULL ) )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

       "%s: list element part of a list.",

       function );

      return( -1 );

    }

    *element = NULL;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

    if( libcthreads_read_write_lock_free(

         &( internal_element->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( value_free_function != NULL )

    {

      if( value_free_function(

           &( internal_element->value ),

           error ) != 1 )

      {

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_RUNTIME,

         LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,

         "%s: unable to free value.",

         function );

        result = -1;

      }

    }

    memory_free(

     internal_element );

  }

  return( result );

}

/* Retrieves the parent list from the list element

 * Returns 1 if successful or -1 on error

 */

int libcdata_list_element_get_parent_list(

     libcdata_list_element_t *element,

     intptr_t **parent_list,

     libcerror_error_t **error )

{

  libcdata_internal_list_element_t *internal_element = NULL;

  static char *function                              = "libcdata_list_element_get_parent_list";

  if( element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid list element.",

     function );

    return( -1 );

  }

  internal_element = (libcdata_internal_list_element_t *) element;

  if( parent_list == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid parent list.",

     function );

    return( -1 );

  }

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_element->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 reading.",

     function );

    return( -1 );

  }

#endif

  *parent_list = internal_element->parent_list;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_release_for_read(

       internal_element->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 reading.",

     function );

    return( -1 );

  }

#endif

  return( 1 );

}

/* Sets the parent list in the list element

 * Returns 1 if successful or -1 on error

 */

int libcdata_list_element_set_parent_list(

     libcdata_list_element_t *element,

     intptr_t *parent_list,

     libcerror_error_t **error )

{

  libcdata_internal_list_element_t *internal_element = NULL;

  static char *function                              = "libcdata_list_element_set_parent_list";

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  intptr_t *backup_parent_list                       = NULL;

#endif

  if( element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid list element.",

     function );

    return( -1 );

  }

  internal_element = (libcdata_internal_list_element_t *) element;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_element->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 );

  }

  backup_parent_list = internal_element->parent_list;

#endif

  internal_element->parent_list = parent_list;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_release_for_write(

       internal_element->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 );

    goto on_error;

  }

#endif

  return( 1 );

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

on_error:

  internal_element->parent_list = backup_parent_list;

  return( -1 );

#endif

}

/* Retrieves the previous element from the list element

 * Returns 1 if successful or -1 on error

 */

int libcdata_list_element_get_previous_element(

     libcdata_list_element_t *element,

     libcdata_list_element_t **previous_element,

     libcerror_error_t **error )

{

  libcdata_internal_list_element_t *internal_element = NULL;

  static char *function                              = "libcdata_list_element_get_previous_element";

  if( element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid list element.",

     function );

    return( -1 );

  }

  internal_element = (libcdata_internal_list_element_t *) element;

  if( previous_element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid previous element.",

     function );

    return( -1 );

  }

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_element->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 reading.",

     function );

    return( -1 );

  }

#endif

  *previous_element = internal_element->previous_element;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_release_for_read(

       internal_element->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 reading.",

     function );

    return( -1 );

  }

#endif

  return( 1 );

}

/* Sets the previous element in the list element

 * Returns 1 if successful or -1 on error

 */

int libcdata_list_element_set_previous_element(

     libcdata_list_element_t *element,

     libcdata_list_element_t *previous_element,

     libcerror_error_t **error )

{

  libcdata_internal_list_element_t *internal_element = NULL;

  static char *function                              = "libcdata_list_element_set_previous_element";

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  libcdata_list_element_t *backup_previous_element   = NULL;

#endif

  if( element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid list element.",

     function );

    return( -1 );

  }

  internal_element = (libcdata_internal_list_element_t *) element;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_element->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 );

  }

  backup_previous_element = internal_element->previous_element;

#endif

  internal_element->previous_element = previous_element;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_release_for_write(

       internal_element->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 );

    goto on_error;

  }

#endif

  return( 1 );

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

on_error:

  internal_element->previous_element = backup_previous_element;

  return( -1 );

#endif

}

/* Retrieves the next element from the list element

 * Returns 1 if successful or -1 on error

 */

int libcdata_list_element_get_next_element(

     libcdata_list_element_t *element,

     libcdata_list_element_t **next_element,

     libcerror_error_t **error )

{

  libcdata_internal_list_element_t *internal_element = NULL;

  static char *function                              = "libcdata_list_element_get_next_element";

  if( element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid list element.",

     function );

    return( -1 );

  }

  internal_element = (libcdata_internal_list_element_t *) element;

  if( next_element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid next element.",

     function );

    return( -1 );

  }

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_element->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 reading.",

     function );

    return( -1 );

  }

#endif

  *next_element = internal_element->next_element;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_release_for_read(

       internal_element->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 reading.",

     function );

    return( -1 );

  }

#endif

  return( 1 );

}

/* Sets the next element in the list element

 * Returns 1 if successful or -1 on error

 */

int libcdata_list_element_set_next_element(

     libcdata_list_element_t *element,

     libcdata_list_element_t *next_element,

     libcerror_error_t **error )

{

  libcdata_internal_list_element_t *internal_element = NULL;

  static char *function                              = "libcdata_list_element_set_next_element";

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  libcdata_list_element_t *backup_next_element       = NULL;

#endif

  if( element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid list element.",

     function );

    return( -1 );

  }

  internal_element = (libcdata_internal_list_element_t *) element;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_element->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 );

  }

  backup_next_element = internal_element->next_element;

#endif

  internal_element->next_element = next_element;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_release_for_write(

       internal_element->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 );

    goto on_error;

  }

#endif

  return( 1 );

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

on_error:

  internal_element->next_element = backup_next_element;

  return( -1 );

#endif

}

/* Retrieves the previous and next element from the list element

 * Returns 1 if successful or -1 on error

 */

int libcdata_list_element_get_elements(

     libcdata_list_element_t *element,

     libcdata_list_element_t **previous_element,

     libcdata_list_element_t **next_element,

     libcerror_error_t **error )

{

  libcdata_internal_list_element_t *internal_element = NULL;

  static char *function                              = "libcdata_list_element_get_elements";

  if( element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid list element.",

     function );

    return( -1 );

  }

  internal_element = (libcdata_internal_list_element_t *) element;

  if( previous_element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid previous element.",

     function );

    return( -1 );

  }

  if( next_element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid next element.",

     function );

    return( -1 );

  }

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_element->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 reading.",

     function );

    return( -1 );

  }

#endif

  *previous_element = internal_element->previous_element;

  *next_element     = internal_element->next_element;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_release_for_read(

       internal_element->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 reading.",

     function );

    return( -1 );

  }

#endif

  return( 1 );

}

/* Sets the previous and next element in the list element

 * Returns 1 if successful or -1 on error

 */

int libcdata_list_element_set_elements(

     libcdata_list_element_t *element,

     libcdata_list_element_t *previous_element,

     libcdata_list_element_t *next_element,

     libcerror_error_t **error )

{

  libcdata_internal_list_element_t *internal_element = NULL;

  static char *function                              = "libcdata_list_element_set_elements";

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  libcdata_list_element_t *backup_next_element       = NULL;

  libcdata_list_element_t *backup_previous_element   = NULL;

#endif

  if( element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid list element.",

     function );

    return( -1 );

  }

  internal_element = (libcdata_internal_list_element_t *) element;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_element->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 );

  }

  backup_previous_element = internal_element->previous_element;

  backup_next_element     = internal_element->next_element;

#endif

  internal_element->previous_element = previous_element;

  internal_element->next_element     = next_element;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_release_for_write(

       internal_element->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 );

    goto on_error;

  }

#endif

  return( 1 );

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

on_error:

  internal_element->previous_element = backup_previous_element;

  internal_element->next_element     = backup_next_element;

  return( -1 );

#endif

}

/* Retrieves the value from the list element

 * Returns 1 if successful or -1 on error

 */

int libcdata_list_element_get_value(

     libcdata_list_element_t *element,

     intptr_t **value,

     libcerror_error_t **error )

{

  libcdata_internal_list_element_t *internal_element = NULL;

  static char *function                              = "libcdata_list_element_get_value";

  if( element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid list element.",

     function );

    return( -1 );

  }

  internal_element = (libcdata_internal_list_element_t *) element;

  if( value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value.",

     function );

    return( -1 );

  }

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_element->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 reading.",

     function );

    return( -1 );

  }

#endif

  *value = internal_element->value;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_release_for_read(

       internal_element->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 reading.",

     function );

    return( -1 );

  }

#endif

  return( 1 );

}

/* Sets the value in the list element

 * Returns 1 if successful or -1 on error

 */

int libcdata_list_element_set_value(

     libcdata_list_element_t *element,

     intptr_t *value,

     libcerror_error_t **error )

{

  libcdata_internal_list_element_t *internal_element = NULL;

  static char *function                              = "libcdata_list_element_set_value";

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  intptr_t *backup_value                             = NULL;

#endif

  if( element == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid list element.",

     function );

    return( -1 );

  }

  internal_element = (libcdata_internal_list_element_t *) element;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_element->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 );

  }

  backup_value = internal_element->value;

#endif

  internal_element->value = value;

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

  if( libcthreads_read_write_lock_release_for_write(

       internal_element->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 );

    goto on_error;

  }

#endif

  return( 1 );

#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBCDATA )

on_error:

  internal_element->value = backup_value;

  return( -1 );

#endif

}