1/* Copyright (C) 1995, 1996, 1997, 2000, 2002 Free Software Foundation, Inc.
2   This file is part of the GNU C Library.
3
4   The GNU C Library is free software; you can redistribute it and/or
5   modify it under the terms of the GNU Lesser General Public
6   License as published by the Free Software Foundation; either
7   version 2.1 of the License, or (at your option) any later version.
8
9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library; if not, write to the Free
16   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17   02111-1307 USA.  */
18
19#ifndef _SYS_MSG_H
20# error "Never use <bits/msq.h> directly; include <sys/msg.h> instead."
21#endif
22
23#include <bits/types.h>
24#include <bits/wordsize.h>
25
26/* Define options for message queue functions.  */
27#define MSG_NOERROR	010000	/* no error if message is too big */
28#ifdef __USE_GNU
29# define MSG_EXCEPT	020000	/* recv any msg except of specified type */
30#endif
31
32/* Types used in the structure definition.  */
33typedef unsigned long int msgqnum_t;
34typedef unsigned long int msglen_t;
35
36/* Structure of record for one message inside the kernel.
37   The type `struct msg' is opaque.  */
38struct msqid_ds
39{
40  struct ipc_perm msg_perm;	/* structure describing operation permission */
41  __time_t msg_stime;		/* time of last msgsnd command */
42#if __WORDSIZE == 32
43  unsigned long int __unused1;
44#endif
45  __time_t msg_rtime;		/* time of last msgrcv command */
46#if __WORDSIZE == 32
47  unsigned long int __unused2;
48#endif
49  __time_t msg_ctime;		/* time of last change */
50#if __WORDSIZE == 32
51  unsigned long int __unused3;
52#endif
53  unsigned long int __msg_cbytes; /* current number of bytes on queue */
54  msgqnum_t msg_qnum;		/* number of messages currently on queue */
55  msglen_t msg_qbytes;		/* max number of bytes allowed on queue */
56  __pid_t msg_lspid;		/* pid of last msgsnd() */
57  __pid_t msg_lrpid;		/* pid of last msgrcv() */
58  unsigned long int __unused4;
59  unsigned long int __unused5;
60};
61
62#ifdef __USE_MISC
63
64# define msg_cbytes	__msg_cbytes
65
66/* ipcs ctl commands */
67# define MSG_STAT 11
68# define MSG_INFO 12
69
70/* buffer for msgctl calls IPC_INFO, MSG_INFO */
71struct msginfo
72  {
73    int msgpool;
74    int msgmap;
75    int msgmax;
76    int msgmnb;
77    int msgmni;
78    int msgssz;
79    int msgtql;
80    unsigned short int msgseg;
81  };
82
83#endif /* __USE_MISC */
84