#include <sys/sunldi.h>
intldi_poll(ldi_handle_tlh, shortevents, intanyyet, short *reventsp,
struct pollhead **phpp);
PARAMETERS
lh
Layered handle.
events
Potential events. Valid events are:
POLLIN
Data other than high priority data may be read without blocking.
POLLOUT
Normal data may be written without blocking.
POLLPRI
High priority data may be received without blocking.
POLLHUP
Device hangup has occurred.
POLLERR
An error has occurred on the device.
POLLRDNORM
Normal data (priority band = 0) may be read without blocking.
POLLRDBAND
Data from a non-zero priority band may be read without blocking.
POLLWRNORM
Data other than high priority data may be read without blocking.
POLLWRBAND
Priority data (priority band > 0) may be written.
anyyet
A flag that is non-zero if any other file descriptors in the pollfd array have events pending. The poll(2) system call takes a pointer to an array of pollfd structures as one of its arguments. See poll(2) for
more details.
reventsp
Pointer to a bitmask of the returned events satisfied.
phpp
Pointer to a pointer to a pollhead structure.
DESCRIPTION
The ldi_poll() function passes a poll request
to the device entry point for the device specified by the layered handle. This operation is supported for block, character, and streams devices.
RETURN VALUES
The ldi_poll() function returns 0 upon success. If a failure occurs before the request is passed on to the device, possible return values are:
EINVAL
Invalid input parameters.
ENOTSUP
Operation is not supported for this device.
CONTEXT
These functions may be called from user or kernel context.
