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/* Generic implementation of the SysV message struct msqid_ds.
Copyright (C) 2020 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, see
<https://www.gnu.org/licenses/>. */
#ifndef _SYS_MSG_H
# error "Never use <bits/msq.h> directly; include <sys/msg.h> instead."
#endif
#include <bits/msq-pad.h>
#if __MSQ_PAD_BEFORE_TIME
# define __MSQ_PAD_TIME(NAME, RES) \
unsigned long int __glibc_reserved ## RES; __time_t NAME
#elif __MSQ_PAD_AFTER_TIME
# define __MSQ_PAD_TIME(NAME, RES) \
__time_t NAME; unsigned long int __glibc_reserved ## RES
#else
# define __MSQ_PAD_TIME(NAME, RES) \
__time_t NAME
#endif
/* 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 */
__MSQ_PAD_TIME (msg_stime, 1); /* time of last msgsnd command */
__MSQ_PAD_TIME (msg_rtime, 2); /* time of last msgrcv command */
__MSQ_PAD_TIME (msg_ctime, 3); /* time of last change */
__syscall_ulong_t __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() */
__syscall_ulong_t __glibc_reserved4;
__syscall_ulong_t __glibc_reserved5;
};
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