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
unbufcall 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 pending callback is
cancelled or has run. Because of this, locks acquired by the callback routine should not be held across the call to unbufcall() or deadlock
may result.
RETURN VALUES
None.
CONTEXT
unbufcall() can be called from user or interrupt context.
SEE ALSO
bufcall(9F), esbbcall(9F)
Writing Device Drivers
STREAMS Programming Guide
SunOS 5.10 18 Feb 1998 unbufcall(9F)
