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/* Copyright (C) 1995, 1997, 2000, 2008 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>
#include <bits/wordsize.h>
#define MSG_R 0400
#define MSG_W 0200
#define MSG_RWAIT 01000
#define MSG_WWAIT 02000
/* Define options for message queue functions. */
#define MSG_NOERROR 010000 /* no error if message is too big */
/* Types used in the structure definition. */
typedef unsigned long msgqnum_t;
typedef unsigned long msglen_t;
struct msg;
/* 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 */
struct msg *msg_first; /* pointer to first message on q */
struct msg *msg_last; /* pointer to last message on q */
msglen_t msg_cbytes; /* current # bytes on q */
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() */
__time_t msg_stime; /* time of last msgsnd command */
#if __WORDSIZE == 32
int32_t msg_pad1;
#endif
__time_t msg_rtime; /* time of last msgrcv command */
#if __WORDSIZE == 32
int32_t msg_pad2;
#endif
__time_t msg_ctime; /* time of last change */
#if __WORDSIZE == 32
int32_t msg_pad3;
#endif
short msg_cv;
short msg_qnum_cv;
long msg_pad4[3];
};
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