# Functions
New creates a new FD.
NewFromFile creates a new FD from an os.File.
NewFromFiles creates new FDs for each file in the slice.
NewReadWriter creates a ReadWriter for fd.
Open is equivalent to open(2).
OpenAt is equivalent to openat(2).
# Structs
FD owns a host file descriptor.
ReadWriter implements io.ReadWriter, io.ReaderAt, and io.WriterAt for fd.