unbufcall man page on SmartOS

unbufcall man page on SmartOS

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UNBUFCALL(9F)							 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

				 Jan 16, 2006			 UNBUFCALL(9F)

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