cdev_output_full()

Check if the character device's output buffer is full

Synopsis:

#include <qvm/cdev.h>
static int cdev_output_full(const struct cdev_state *const cds)

Arguments:

cds
A pointer to a structure with the character device state (see cdev_state).

Description:

Calling this function makes sense only if you are using the internal buffers (i.e., you specified a non-zero buffer size when calling cdev_setup()).

Returns:

If the output buffer is full, 1 (one); if the output buffer isn't full, 0 (zero); otherwise, a negative errno value.

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