/*	$OpenBSD: linux_msg.h,v 1.3 2011/04/05 22:54:31 pirofti Exp $	*/
/*	$NetBSD: linux_msg.h,v 1.2 1995/08/15 21:14:34 fvdl Exp $	*/

/*
 * Copyright (c) 1995 Frank van der Linden
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed for the NetBSD Project
 *      by Frank van der Linden
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _LINUX_MSG_H_
#define _LINUX_MSG_H_

/*
 * msq_id_ds structure. Mostly the same fields, except for some internal
 * ones.
 */
struct linux_msqid_ds {
	struct linux_ipc_perm	l_msg_perm;
	void			*l_msg_first;
	void			*l_msg_last;
	linux_time_t		l_msg_stime;
	linux_time_t		l_msg_rtime;
	linux_time_t		l_msg_ctime;
	void			*l_wwait;	/* Linux internal */
	void			*l_rwait;	/* Linux internal */
	ushort			l_msg_cbytes;
	ushort			l_msg_qnum;
	ushort			l_msg_qbytes;
	ushort			l_msg_lspid;
	ushort			l_msg_lrpid;
};

#define LINUX_MSG_NOERROR	0x1000
#define LINUX_MSG_EXCEPT	0x2000

/*
 * The notorious anonymous message structure.
 */
struct linux_mymsg {
	long	l_mtype;
	char	l_mtext[1];
};

/*
 * This kludge is used for the 6th argument to the msgrcv system
 * call, to get around the maximum of 5 arguments to a syscall in Linux.
 */
struct linux_msgrcv_msgarg {
	struct linux_mymsg *msg;
	int type;
};
/*
 * For msgctl calls.
 */
struct linux_msginfo {
	int	l_msgpool;
	int	l_msgmap;
	int	l_msgmax;
	int	l_msgmnb;
	int	l_msgmni;
	int	l_msgssz;
	int	l_msgtql;
	ushort	l_msgseg;
};

#define LINUX_MSG_STAT	11
#define LINUX_MSG_INFO	12

#endif /* _LINUX_MSG_H_ */