mioc2ack(9f) [opensolaris 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)

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

NAME

       mcopyout - Convert an M_IOCTL or M_IOCDATA message to an M_COPYOUT

SYNOPSIS

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

       void mcopyout(mblk_t *mp, void *private, size_t size, void *useraddr, mblk_t *dp);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

       mp	       M_IOCTL or M_IOCDATA message.

       private	       Value to set the cq_private field of the copyreq(9S) to.

       size	       Value to set the cq_size field of the copyreq(9S) to.

       useraddr        Optionally, the value to set the cq_addr field of the copyreq(9S) to.

       dp	       Optionally, the payload to copy out.

DESCRIPTION

       The mcopyout() function converts an M_IOCTL or M_IOCDATA message into an M_COPYOUT message using the supplied arguments.

       To  convert  the  message,  mcopyout() changes the message type to M_COPYOUT, and its payload from a iocblk(9S) to a copyreq(9S). Since the
       iocblk(9S) and copyreq(9S) are designed to overlay one another, the only fields which must be updated are cq_private, cq_size, and cq_addr,
       which  are  set to the supplied values. If useraddr is passed as NULL, the M_IOCTL must be transparent and cq_addr is assigned the pointer-
       sized quantity found at mp->b_cont->b_rptr.

       If dp is not NULL, any trailing message blocks associated with mp are freed, mp->b_cont is reset to dp and dp->b_wptr is set to	dp->b_rptr
       + size. Otherwise, any trailing message blocks are unaffected.

RETURN VALUES

       None.

CONTEXT

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

SEE ALSO

       mcopyin(9F), copyreq(9S), iocblk(9S)

       STREAMS Programming Guide

SunOS 5.10							    9 June 2004 						      mcopyout(9F)