File usage backend interface. Hierarchy interface \Drupal\file\FileUsage\

Default mode for new directories. See self::chmod(). File core/lib/Drupal/Core/File/FileSystem.php, line

public File::getSize() Returns the size

Defines a "managed_file" Form API field and a "file" field for Field module. File core/modules/file/file

public FileSystemInterface::tempnam($directory, $prefix)

public File::setFileUri($uri) Sets the

public File::setFilename($filename) Sets

file_validate_extensions(FileInterface $file, $extensions) Checks that the filename ends with an allowed extension

template_preprocess_file_upload_help(&$variables) Prepares variables for file upload help text templates

file_get_file_references(FileInterface $file, FieldDefinitionInterface $field = NULL, $age = EntityStorageInterface::FIELD_LOAD_REVISION, $field_type