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diff --git a/include/sys/poll.h b/include/sys/poll.h
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+/* Compatibility definitions for System V `poll' interface.
+ Copyright (C) 1994, 1996, 1997, 1998 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 _SYS_POLL_H
+#define _SYS_POLL_H 1
+
+#include <features.h>
+
+/* Get the platform dependent bits of `poll'. */
+#include <bits/poll.h>
+
+__BEGIN_DECLS
+
+/* Data structure describing a polling request. */
+struct pollfd
+ {
+ int fd; /* File descriptor to poll. */
+ short int events; /* Types of events poller cares about. */
+ short int revents; /* Types of events that actually occurred. */
+ };
+
+
+/* Poll the file descriptors described by the NFDS structures starting at
+ FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for
+ an event to occur; if TIMEOUT is -1, block until an event occurs.
+ Returns the number of file descriptors with events, zero if timed out,
+ or -1 for errors. */
+extern int __poll __P ((struct pollfd *__fds, unsigned long int __nfds,
+ int __timeout));
+extern int poll __P ((struct pollfd *__fds, unsigned long int __nfds,
+ int __timeout));
+
+__END_DECLS
+
+#endif /* sys/poll.h */