opensolaris man page for mioc2ack

mioc2ack(9F)						   Kernel Functions for Drivers 					      mioc2ack(9F)

NAME
       mioc2ack - Convert an M_IOCTL message to an M_IOCACK message

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

       void mioc2ack(mblk_t *mp, mblk_t *dp, size_t count, int rval);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI).

PARAMETERS
       mp	M_IOCTL message.

       dp	Payload to associate with M_IOCACK 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 mioc2ack() function converts an M_IOCTL message into an M_IOCACK message using the supplied arguments.

       To  convert the message, mioc2ack() changes the message type to M_IOCACK, sets the ioc_count and ioc_rval members of the iocblk(9S) associ-
       ated with mp to the passed-in values, and clears the ioc_error field. Further, it frees any message blocks chained off  of  mp->b_cont  and
       resets  mp->b_cont  to  dp.  Finally,  if  dp is not NULL, mioc2ack() resets dp->b_wptr to be dp->b_rptr + count (that is, it sets dp to be
       exactly count bytes in length).

RETURN VALUES
       None.

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

SEE ALSO
       miocack(9F), miocnak(9F), iocblk(9S)

       STREAMS Programming Guide

SunOS 5.11							    9 June 2004 						      mioc2ack(9F)