+ * Convenient way to push data into a FIFO using the KFile interface.
+ * For example, it's possible to read from a serial port and put the characters
+ * into a fifo:
+ * \code
+ * // serial reader process
+ * {
+ * // other stuff here...
+ * kfile_read(&ser_port.fd, buffer, sizeof(buffer));
+ * kfile_write(&kfifo.fd, buffer, sizeof(buffer));
+ * // ...
+ * }
+ *
+ * // controller process
+ * {
+ * //...
+ * kfile_read(&kfifo.fd, buffer2, sizeof(buffer2));
+ * // use read data
+ * }
+ * \endcode
+ *
+ *