opensolaris man page for unbufcall

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

NAME
       unbufcall - cancel a pending bufcall request

SYNOPSIS
       #include <sys/stream.h>

       void unbufcall(bufcall_id_t id);

INTERFACE LEVEL
       Architecture independent level 1 (DDI/DKI).

PARAMETERS
       id    Identifier returned from bufcall(9F) or esbbcall(9F).

DESCRIPTION
       The  unbufcall  function  cancels a pending bufcall() or esbbcall() request. The argument id is a non-zero identifier for the request to be
       cancelled. id is returned from the bufcall() or esbbcall() function used to issue the request. unbufcall() will not return until the  pend-
       ing  callback is cancelled or has run. Because of this, locks acquired by the callback routine should not be held across the call to unbuf-
       call() or deadlock may result.

RETURN VALUES
       None.

CONTEXT
       The unbufcall function can be called from user, interrupt, or kernel context.

SEE ALSO
       bufcall(9F), esbbcall(9F)

       Writing Device Drivers

       STREAMS Programming Guide

SunOS 5.11							    16 Jan 2006 						     unbufcall(9F)