Received duplicate M

Received duplicate M_IOCACK

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miocack

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

NAME

       miocack - Positively acknowledge an M_IOCTL message

SYNOPSIS

       #include <sys/stream.h>
       #include <sys/strsun.h>

       void miocack(queue_t *wq, mblk_t *mp, intcount, int rval);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

       wq	Write queue associated with the read queue to send the M_IOCACK on.

       mp	M_IOCTL message.

       count	Value to set the ioc_count of the iocblk(9S) to.

       rval	Value to set the ioc_rval of the iocblk(9S) to.

DESCRIPTION

       The miocack() function converts an M_IOCTL message into a M_IOCACK message and sends the resulting message upstream.

       To convert the message, miocack() changes the message type to M_IOCACK, sets the 'ioc_count' and 'ioc_rval' members of the iocblk(9S) asso-
       ciated with mp to the passed-in values, and clears the 'ioc_error' field. If the caller	specifies  a  non-zero	value  for  count,  it	is
       expected that the caller has already set 'mp->b_cont' field to point to a message block with a length of at least count bytes.

       Callers	that  only need to perform the message conversion, or need to perform additional steps between the conversion and the	   sending
       of the M_IOCACK should use mioc2ack(9F).

RETURN VALUES

       None.

CONTEXT

       This function can be called from user, kernel or interrupt context.

NOTES

       Callers must not hold any locks across a miocack() that can be acquired as part of put(9E) processing.

SEE ALSO

       mioc2ack(9F), put(9E), iocblk(9S)

       STREAMS Programming Guide

SunOS 5.11							    9 June 2004 						       miocack(9F)

Solaris