- (open-input-file* FILENO [OPENMODE ENCODING])procedure
- (open-output-file* FILENO [OPENMODE ENCODING])procedure
Opens file for the file-descriptor FILENO for input or output and returns a port. FILENO should be a positive exact integer. OPENMODE specifies an additional mode for opening the file (currently only the keyword #:append is supported, which opens an output-file for appending). ENCODING should be a symbol specifying a file encoding and defaults to utf-8.