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diff --git a/sysdeps/unix/sysv/linux/bits/msq.h b/sysdeps/unix/sysv/linux/bits/msq.h
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+/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef _SYS_MSQ_BUF_H
+
+#define _SYS_MSQ_BUF_H 1
+#include <features.h>
+
+#include <sys/types.h>
+
+/* Define options for message queue functions. */
+#define MSG_NOERROR 010000 /* no error if message is too big */
+#define MSG_EXCEPT 020000 /* recv any msg except of specified type */
+
+
+__BEGIN_DECLS
+
+/* 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 queue */
+ struct msg *__msg_last; /* pointer to last message on queue */
+ __time_t msg_stime; /* time of last msgsnd command */
+ __time_t msg_rtime; /* time of last msgrcv command */
+ __time_t msg_ctime; /* time of last change */
+ struct wait_queue *__wwait; /* ??? */
+ struct wait_queue *__rwait; /* ??? */
+ unsigned short int __msg_cbytes;/* current number of bytes on queue */
+ unsigned short int msg_qnum; /* number of messages currently on queue */
+ unsigned short int msg_qbytes;/* max number of bytes allowed on queue */
+ int msg_lspid; /* pid of last msgsnd() */
+ int msg_lrpid; /* pid of last msgrcv() */
+};
+
+#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;
+ ushort msgseg;
+};
+
+#endif /* __USE_MISC */
+
+__END_DECLS
+
+#endif /* _SYS_MSQ_BUF_H */