sys/common/msgsys.c

	msgsys.c revision 5d54f3d8999eac1762fe0a8c7177d20f1f201fae
/*
 * 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 1993 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1984 AT&T */
/*        All Rights Reserved   */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include    <syscall.h>
#include    <stdarg.h>
#include    <sys/types.h>
#include    <sys/ipc.h>
#include    <sys/msg.h>


/* msgsys dispatch argument */
#define MSGGET  0
#define MSGCTL  1
#define MSGRCV  2
#define MSGSND  3

int
msgget(key_t key, int msgflg)
{
    return (_syscall(SYS_msgsys, MSGGET, key, msgflg));
}

int
msgctl(int msqid, int cmd, struct msqid_ds *buf)
{
    return (_syscall(SYS_msgsys, MSGCTL, msqid, cmd, buf));
}

int
msgrcv(int msqid, struct msgbuf *msgp, int msgsz, long msgtyp, int msgflg)
{
    return (_syscall(SYS_msgsys, MSGRCV, msqid, msgp, msgsz, msgtyp, msgflg));
}

int
msgsnd(int msqid, struct msgbuf *msgp, int msgsz, int msgflg)
{
    return (_syscall(SYS_msgsys, MSGSND, msqid, msgp, msgsz, msgflg));
}

int
msgsys(int sysnum, ...)
{
    va_list ap;
    key_t key;
    int msgflg;
    int msgflag;
    int msqid, cmd;
    struct msqid_ds *buf;
    struct msgbuf *msgp;
    int msgsz;
    long msgtyp;


    va_start(ap, sysnum);
    switch (sysnum) {
    case MSGGET:
        key=va_arg(ap, key_t);
        msgflag=va_arg(ap, int);
        va_end(ap);
        return (msgget(key, msgflag));
    case MSGCTL:
        msqid=va_arg(ap, int);
        cmd=va_arg(ap, int);
        buf=va_arg(ap, struct msqid_ds *);
        va_end(ap);
        return (msgctl(msqid, cmd, buf));
    case MSGRCV:
        msqid=va_arg(ap, int);
        msgp=va_arg(ap, struct msgbuf *);
        msgsz=va_arg(ap, int);
        msgtyp=va_arg(ap, long);
        msgflg=va_arg(ap, int);
        va_end(ap);
        return (msgrcv(msqid, msgp, msgsz, msgtyp, msgflg));
    case MSGSND:
        msqid=va_arg(ap, int);
        msgp=va_arg(ap, struct msgbuf *);
        msgsz=va_arg(ap, int);
        msgflg=va_arg(ap, int);
        va_end(ap);
        return (msgsnd(msqid, msgp, msgsz, msgflg));
    }
    va_end(ap);
    return (-1);
}