Login or Register to Ask a Question and Join Our Community

Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

miocnak(9f) [opensolaris 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 5.11							    9 June 2004 						       miocnak(9F)

Check Out this Related Man Page

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)
Man Page