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+/* Copyright (C) 1997 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 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 _AIO_MISC_H
+#define _AIO_MISC_H	1
+
+#include <semaphore.h>
+
+/* Union of the two request types.  */
+typedef union
+  {
+    struct aiocb aiocb;
+    struct aiocb64 aiocb64;
+  } aiocb_union;
+
+/* List of enqueued requests.  */
+extern aiocb_union *__aio_requests;
+
+/* Lock for global I/O list of requests.  */
+extern sem_t __aio_requests_sema;
+
+
+/* Enqueue request.  */
+extern int __aio_enqueue_request (aiocb_union *aiocbp, int operation,
+				  int require_lock);
+
+/* Send the signal.  */
+extern int __aio_sigqueue (int sig, const union sigval val);
+
+#endif /* aio_misc.h */