.. -*- coding: utf-8; mode: rst -*- .. _lirc_get_length: ********************* ioctl LIRC_GET_LENGTH ********************* Name ==== LIRC_GET_LENGTH - Retrieves the code length in bits. Synopsis ======== .. cpp:function:: int ioctl( int fd, int request, __u32 *length ) Arguments ========= ``fd`` File descriptor returned by open(). ``request`` LIRC_GET_LENGTH ``length`` length, in bits Description =========== Retrieves the code length in bits (only for ``LIRC-MODE-LIRCCODE``). Reads on the device must be done in blocks matching the bit count. The bit could should be rounded up so that it matches full bytes. Return Value ============ On success 0 is returned, on error -1 and the ``errno`` variable is set appropriately. The generic error codes are described at the :ref:`Generic Error Codes ` chapter.