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