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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 1999-2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#ifndef _SYS_MSG_H
#define _SYS_MSG_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/ipc.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* IPC Message Facility.
*/
/*
* Implementation Constants.
*/
/*
* Permission Definitions.
*/
#define MSG_R 0400 /* read permission */
#define MSG_W 0200 /* write permission */
/*
* ipc_perm Mode Definitions.
*/
#define MSG_RWAIT 01000 /* a reader is waiting for a message */
#define MSG_WWAIT 02000 /* a writer is waiting to send */
/*
* Message Operation Flags.
*/
#define MSG_NOERROR 010000 /* no error if big message */
typedef unsigned long msgqnum_t;
typedef unsigned long msglen_t;
struct msg;
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 */
msglen_t msg_cbytes; /* current # bytes on q */
msgqnum_t msg_qnum; /* # of messages on q */
msglen_t msg_qbytes; /* max # of bytes on q */
pid_t msg_lspid; /* pid of last msgsnd */
pid_t msg_lrpid; /* pid of last msgrcv */
#if defined(_LP64)
time_t msg_stime; /* last msgsnd time */
time_t msg_rtime; /* last msgrcv time */
time_t msg_ctime; /* last change time */
#else
time_t msg_stime; /* last msgsnd time */
int32_t msg_pad1; /* reserved for time_t expansion */
time_t msg_rtime; /* last msgrcv time */
int32_t msg_pad2; /* time_t expansion */
time_t msg_ctime; /* last change time */
int32_t msg_pad3; /* time_t expansion */
#endif
short msg_cv;
short msg_qnum_cv;
long msg_pad4[3]; /* reserve area */
};
/*
* User message buffer template for msgsnd and msgrecv system calls.
*/
#ifdef _KERNEL
struct ipcmsgbuf {
#else
struct msgbuf {
#endif /* _KERNEL */
#if defined(_XOPEN_SOURCE)
long _mtype; /* message type */
char _mtext[1]; /* message text */
#else
long mtype; /* message type */
char mtext[1]; /* message text */
#endif
};
/*
* Header and message header structures for msgsnap() system call.
*/
struct msgsnap_head {
size_t msgsnap_size; /* bytes consumed/required in the buffer */
size_t msgsnap_nmsg; /* number of messages in the buffer */
};
struct msgsnap_mhead {
size_t msgsnap_mlen; /* number of bytes in message that follows */
long msgsnap_mtype; /* message type */
};
#if !defined(_KERNEL)
#if defined(__STDC__)
int msgctl(int, int, struct msqid_ds *);
int msgget(key_t, int);
int msgids(int *, uint_t, uint_t *);
int msgsnap(int, void *, size_t, long);
ssize_t msgrcv(int, void *, size_t, long, int);
int msgsnd(int, const void *, size_t, int);
#else /* __STDC__ */
int msgctl();
int msgget();
int msgids();
int msgsnap();
int msgrcv();
int msgsnd();
#endif /* __STDC__ */
#endif /* ! _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MSG_H */
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