msgdsize man page on SmartOS

msgdsize man page on SmartOS

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MSGDSIZE(9F)							  MSGDSIZE(9F)

NAME
       msgdsize - return the number of bytes in a message

SYNOPSIS
       #include <sys/stream.h>

       size_t msgdsize(mblk_t *mp);

INTERFACE LEVEL
       Architecture independent level 1 (DDI/DKI).

PARAMETERS
       mp
	     Message to be evaluated.

DESCRIPTION
       The  msgdsize()	function counts the number of bytes in a data message.
       Only bytes included in the data blocks of type M_DATA are  included  in
       the count.

RETURN VALUES
       The number of data bytes in a message, expressed as an integer.

CONTEXT
       The  msgdsize()	function can be called from user, interrupt, or kernel
       context.

EXAMPLES
       See bufcall(9F) for an example that uses msgdsize().

SEE ALSO
       bufcall(9F)

       Writing Device Drivers

       STREAMS Programming Guide

				 Jan 16, 2006			  MSGDSIZE(9F)

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