define EBADFD - File descriptor in bad state
define EREMCHG - Remote address changed
define ENOTRECOVERABLE - State not recoverable
define MADV_DONTFORK - don't inherit across fork
define ENODATA - No data available
define EBADFD - File descriptor in bad state
define MADV_DONTFORK - don't inherit across fork
define POSIX_FADV_DONTNEED - Don't need these pages
define GU_WORDSIZE