reactos/posix/include/sys/msg.h

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/* $Id: msg.h,v 1.5 2002/10/29 04:45:21 rex Exp $
*/
/*
* sys/msg.h
*
* message queue structures. Conforming to the Single UNIX(r) Specification
* Version 2, System Interface & Headers Issue 5
*
* This file is part of the ReactOS Operating System.
*
* Contributors:
* Created by KJK::Hyperion <noog@libero.it>
*
* THIS SOFTWARE IS NOT COPYRIGHTED
*
* This source code is offered for use in the public domain. You may
* use, modify or distribute it freely.
*
* This code is distributed in the hope that it will be useful but
* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
* DISCLAMED. This includes but is not limited to warranties of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#ifndef __SYS_SOCKET_H_INCLUDED__
#define __SYS_SOCKET_H_INCLUDED__
/* INCLUDES */
#include <sys/ipc.h>
/* OBJECTS */
/* TYPES */
typedef unsigned int msgqnum_t; /* Used for the number of messages in the message queue */
typedef unsigned int msglen_t; /* Used for the number of bytes allowed in a message queue */
struct msqid_ds
{
struct ipc_perm msg_perm; /* operation permission structure */
msgqnum_t msg_qnum; /* number of messages currently on queue */
msglen_t msg_qbytes; /* maximum number of bytes allowed on queue */
pid_t msg_lspid; /* process ID of last msgsnd() */
pid_t msg_lrpid; /* process ID of last msgrcv() */
time_t msg_stime; /* time of last msgsnd() */
time_t msg_rtime; /* time of last msgrcv() */
time_t msg_ctime; /* time of last change */
};
/* CONSTANTS */
/* Message operation flag */
#define MSG_NOERROR (0x00001000) /* No error if big message */
/* PROTOTYPES */
int msgctl(int, int, struct msqid_ds *);
int msgget(key_t, int);
ssize_t msgrcv(int, void *, size_t, long int, int);
int msgsnd(int, const void *, size_t, int);
/* MACROS */
#endif /* __SYS_SOCKET_H_INCLUDED__ */
/* EOF */