sunos man page for miocnak

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

NAME
       miocnak - Negatively acknowledge an M_IOCTL message

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

       void miocnak(queue_t *wq, mblk_t *mp, int count, int error);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI).

PARAMETERS
       wq	       Write queue associated with the read queue to send the M_IOCNAK on.

       mp	       M_IOCTL message.

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

       error	       Value to set the ioc_error of the iocblk(9S) to.

DESCRIPTION
       The miocnak() function converts an M_IOCTL message into an M_IOCNAK message and sends the resulting message upstream.

       To  convert the message, miocnak() changes the message type to M_IOCNAK, sets the ioc_count and ioc_error members of the iocblk(9S) associ-
       ated with mp to the passed-in values, and clears the ioc_rval field.  Since payloads cannot currently be associated with M_IOCNAK messages,
       count must always be zero. If error is passed as zero, EINVAL is assumed.

RETURN VALUES
       None.

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

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

SEE ALSO
       mioc2ack(9F), miocack(9F), put(9E), iocblk(9S)

       STREAMS Programming Guide

SunOS 5.10							    9 June 2004 						       miocnak(9F)