miocnak(9f) [sunos man page]

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)

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 5.10							    9 June 2004 						       miocack(9F)