mioc2ack(9f)

1mioc2ack(9F)             Kernel Functions for Drivers             mioc2ack(9F)
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NAME

6       mioc2ack - Convert an M_IOCTL message to an M_IOCACK message
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SYNOPSIS

9       #include <sys/stream.h>
10       #include <sys/strsun.h>
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14       void mioc2ack(mblk_t *mp, mblk_t *dp, size_t count, int rval);
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INTERFACE LEVEL

18       Solaris DDI specific (Solaris DDI).
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PARAMETERS

21       mp       M_IOCTL message.
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24       dp       Payload to associate with M_IOCACK message.
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27       count    Value to set the ioc_count of the iocblk(9S) to.
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30       rval     Value to set the ioc_rval of the  iocblk(9S) to.
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DESCRIPTION

34       The  mioc2ack()  function  converts an M_IOCTL message into an M_IOCACK
35       message using the supplied arguments.
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38       To  convert  the  message,  mioc2ack()  changes  the  message  type  to
39       M_IOCACK,  sets  the  ioc_count  and ioc_rval members of the iocblk(9S)
40       associated with mp to the passed-in values, and  clears  the  ioc_error
41       field.  Further,  it frees any message blocks chained off of mp->b_cont
42       and resets mp->b_cont to dp. Finally, if dp  is  not  NULL,  mioc2ack()
43       resets  dp->b_wptr  to be dp->b_rptr + count (that is, it sets dp to be
44       exactly count bytes in length).
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RETURN VALUES

47       None.
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CONTEXT

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