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/* Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
 
   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
 
   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.
 
   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */
 
#ifndef _SYS_MSG_H
# error "Never use <bits/msq.h> directly; include <sys/msg.h> instead."
#endif
 
#include <bits/types.h>
 
/* Define options for message queue functions.  */
#define MSG_NOERROR	010000	/* no error if message is too big */
#ifdef __USE_GNU
# define MSG_EXCEPT	020000	/* recv any msg except of specified type */
#endif
 
/* Types used in the structure definition.  */
typedef unsigned long int msgqnum_t;
typedef unsigned long int msglen_t;
 
 
/* Structure of record for one message inside the kernel.
   The type `struct msg' is opaque.  */
struct msqid_ds
{
  struct ipc_perm msg_perm;	/* structure describing operation permission */
  __time_t msg_stime;		/* time of last msgsnd command */
  unsigned long int __unused1;
  __time_t msg_rtime;		/* time of last msgrcv command */
  unsigned long int __unused2;
  __time_t msg_ctime;		/* time of last change */
  unsigned long int __unused3;
  unsigned long int __msg_cbytes; /* current number of bytes on queue */
  msgqnum_t msg_qnum;		/* number of messages currently on queue */
  msglen_t msg_qbytes;		/* max number of bytes allowed on queue */
  __pid_t msg_lspid;		/* pid of last msgsnd() */
  __pid_t msg_lrpid;		/* pid of last msgrcv() */
  unsigned long int __unused4;
  unsigned long int __unused5;
};
 
#ifdef __USE_MISC
 
# define msg_cbytes	__msg_cbytes
 
/* ipcs ctl commands */
# define MSG_STAT 11
# define MSG_INFO 12
 
/* buffer for msgctl calls IPC_INFO, MSG_INFO */
struct msginfo
  {
    int msgpool;
    int msgmap;
    int msgmax;
    int msgmnb;
    int msgmni;
    int msgssz;
    int msgtql;
    unsigned short int msgseg;
  };
 
#endif /* __USE_MISC */