iocblk(9s) [sunos man page]

iocblk(9S)						    Data Structures for Drivers 						iocblk(9S)

NAME

       iocblk - STREAMS data structure for the M_IOCTL message type

SYNOPSIS

       #include <sys/stream.h>

INTERFACE LEVEL

       Architecture independent level 1 (DDI/DKI).

DESCRIPTION

       The iocblk data structure is used for passing M_IOCTL messages.

STRUCTURE MEMBERS

       int	   ioc_cmd;	 /* ioctl command type */
       cred_t	   *ioc_cr;	 /* full credentials */
       uint_t	   ioc_id;	 /* ioctl id */
       uint_t	   ioc_flag;	 /* ioctl flags */
       uint_t	   ioc_count;	 /* count of bytes in data field */
       int	   ioc_rval;	 /* return value */
       int	   ioc_error;	 /* error code */

SEE ALSO

       STREAMS Programming Guide

SunOS 5.10							    13 Nov 1996 							iocblk(9S)

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 5.10							    9 June 2004 						      mioc2ack(9F)