Function SendFile

internal/cmsg/cmsg.go:120–128

SendFile sends a file over the given AF_UNIX socket. file.Name() is also included so that if the other end uses RecvFile, the file will have the same name information.

(socket, file *os.File)

// included so that if the other end uses RecvFile, the file will have the same
// name information.
func SendFile(socket, file *os.File) error {
	name := file.Name()
	if len(name) >= MaxNameLen {
		return fmt.Errorf("sendfd: filename too long: %s", name)
	}
	err := SendRawFd(socket, name, file.Fd())
	runtime.KeepAlive(file)
	return err
}

// SendRawFd sends a specific file descriptor over the given AF_UNIX socket.
func SendRawFd(socket *os.File, msg string, fd uintptr) error {