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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1987 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984 AT&T */
/* All Rights Reserved */
#ifndef _sys_msg_h
#define _sys_msg_h
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* IPC Message Facility.
*/
/*
* Message Operation Flags.
*/
#define MSG_NOERROR 010000 /* no error if big message */
/*
* Structure Definitions.
*/
/*
* There is one msg queue id data structure for each q in the system.
*/
struct msqid_ds {
struct ipc_perm msg_perm; /* operation permission struct */
struct msg *msg_first; /* ptr to first message on q */
struct msg *msg_last; /* ptr to last message on q */
ushort msg_cbytes; /* current # bytes on q */
ushort msg_qnum; /* # of messages on q */
ushort msg_qbytes; /* max # of bytes on q */
ushort msg_lspid; /* pid of last msgsnd */
ushort msg_lrpid; /* pid of last msgrcv */
time_t msg_stime; /* last msgsnd time */
time_t msg_rtime; /* last msgrcv time */
time_t msg_ctime; /* last change time */
};
/*
* User message buffer template for msgsnd and msgrcv system calls.
*/
/* HACK :: change the name when compiling the kernel to avoid conflicts */
struct msgbuf {
long mtype; /* message type */
char mtext[1]; /* message text */
};
/*
* There is one msg structure for each message that may be in the system.
*/
struct msg {
struct msg *msg_next; /* ptr to next message on q */
long msg_type; /* message type */
ushort msg_ts; /* message text size */
ushort msg_spot; /* message text map address */
};
#endif /* !_sys_msg_h */
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