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<H4><A NAME="SECTION00742220000000000000">Kernel <TT>msg</TT> structure</A></H4>
<P>
The kernel stores each message in the queue within the framework of the <TT>msg</TT> structure.
It is defined for us in <TT>linux/msg.h</TT> as follows:
<P>
<P>
<HR><PRE>/* one msg structure for each message */
struct msg {
struct msg *msg_next; /* next message on queue */
long msg_type;
char *msg_spot; /* message text address */
short msg_ts; /* message text size */
};</PRE>
<HR><DL ><DT><STRONG><TT>msg_next</TT></STRONG>
<DD>
<P>
This is a pointer to the next message in the queue. They are stored as a
singly linked list within kernel addressing space.
<P>
<DT><STRONG><TT>msg_type</TT></STRONG>
<DD>
<P>
This is the message type, as assigned in the user structure <TT>msgbuf</TT>.
<P>
<DT><STRONG><TT>msg_spot</TT></STRONG>
<DD>
<P>
A pointer to the beginning of the message body.
<P>
<DT><STRONG><TT>msg_ts</TT></STRONG>
<DD>
<P>
The length of the message text, or body.
<P>
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<I>Converted on: <BR>
Fri Mar 29 14:43:04 EST 1996</I>
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