opensolaris man page for qunbufcall

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

NAME
       qunbufcall - cancel a pending qbufcall request

SYNOPSIS
       #include <sys/stream.h>
	#include <sys/ddi.h>

       void qunbufcall(queue_t *q, bufcall_id_t id);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI).

PARAMETERS
       q     Pointer to STREAMS queue_t structure.

       id    Identifier returned from qbufcall(9F).

DESCRIPTION
       The qunbufcall() function cancels a pending qbufcall() request. The argument id is a non-zero identifier of the request to be cancelled. id
       is returned from the qbufcall() function used to issue the cancel request.

       The qunbufcall() function is tailored to be used with the enhanced STREAMS framework interface which is based on the concept of perimeters.
       (See mt-streams(9F).) qunbufcall() returns when the bufcall has been cancelled or finished executing. The bufcall will be cancelled even if
       it is blocked at the perimeters associated with the queue. All outstanding timeouts and bufcalls must be cancelled before  a  driver  close
       routine can block and before the close  routine calls qprocsoff(9F).

CONTEXT
       The qunbufcall() function can be called from user, interrupt, or kernel context.

SEE ALSO
       mt-streams(9F), qbufcall(9F), qtimeout(9F), quntimeout(9F)

       Writing Device Drivers

       STREAMS Programming Guide

SunOS 5.11							    16 Jan 2006 						    qunbufcall(9F)