'\" te
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.TH MSGSIZE 9F "Jun 9, 2004"
.SH NAME
msgsize \- Return the total number of bytes in a message
.SH SYNOPSIS
.nf
#include <sys/stream.h>
#include <sys/strsun.h>



\fBsize_t\fR \fBmsgsize\fR(\fBmblk_t *\fR\fImp\fR);
.fi

.SH INTERFACE LEVEL
illumos DDI specific (illumos DDI)
.SH PARAMETERS
.ne 2
.na
\fB\fImp\fR\fR
.ad
.RS 6n
Message to be evaluated.
.RE

.SH DESCRIPTION
The \fBmsgsize()\fR function counts the number of bytes in a message,
regardless of the data type of the underlying data blocks.
.SH RETURN VALUES
Number of bytes in the message.
.SH CONTEXT
This function can be called from user, kernel or interrupt context.
.SH SEE ALSO
.BR msgdsize (9F)
.sp
.LP
\fISTREAMS Programming Guide\fR