go/src/net/sockopt_posix.go

// Boolean to int.
func boolint(b bool) int { … }

func interfaceToIPv4Addr(ifi *Interface) (IP, error) { … }

func setIPv4MreqToInterface(mreq *syscall.IPMreq, ifi *Interface) error { … }

func setReadBuffer(fd *netFD, bytes int) error { … }

func setWriteBuffer(fd *netFD, bytes int) error { … }

func setKeepAlive(fd *netFD, keepalive bool) error { … }

func setLinger(fd *netFD, sec int) error { … }