sunos man page for ldi_poll

ldi_poll(9F)						   Kernel Functions for Drivers 					      ldi_poll(9F)

NAME
       ldi_poll - Poll a device

SYNOPSIS
       #include <sys/sunldi.h>

       int ldi_poll(ldi_handle_t lh, short events, int anyyet, 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.

SunOS 5.10							    3 June 2003 						      ldi_poll(9F)