Manual Pages for UNIX Operating System command usage for man miocack

Kernel Functions for Drivers                          miocack(9F)



NAME
     miocack - Positively acknowledge an M_IOCTL message

SYNOPSIS
     #include 
     #include 



     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) associated 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




SunOS 5.11          Last change: 9 June 2004                    1






Kernel Functions for Drivers                          miocack(9F)



     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 5.11          Last change: 9 June 2004                    2