cec-open — Open a cec device
|const char *device_name,|
Device to be opened.
Open flags. Access mode must be
O_NONBLOCK flag is
CEC_RECEIVE ioctl will return EAGAIN error code when no message is
available, and the
CEC_ADAP_S_LOG_ADDRS ioctls all act in non-blocking mode.
Other flags have no effect.
Note: this documents the proposed CEC API. This API is not yet finalized and is currently only available as a staging kernel module.
To open a cec device applications call
with the desired device name. The function has no side effects; the device
configuration remain unchanged.
When the device is opened in read-only mode, attempts to modify its
configuration will result in an error, and
errno will be
set to EBADF.
open returns the new file descriptor on success.
On error, -1 is returned, and
errno is set appropriately.
Possible error codes include:
The requested access to the file is not allowed.
The process already has the maximum number of files open.
The system limit on the total number of open files has been reached.
Insufficient kernel memory was available.
No device corresponding to this device special file exists.