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diff --git a/sysdeps/unix/sysv/linux/sys/timerfd.h b/sysdeps/unix/sysv/linux/sys/timerfd.h
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+/* Copyright (C) 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_TIMERFD_H
+#define _SYS_TIMERFD_H 1
+
+#include <time.h>
+
+
+/* Bits to be set in the FLAGS parameter of `timerfd_settime'. */
+enum
+ {
+ TFD_TIMER_ABSTIME = 1 << 0
+#define TFD_TIMER_ABSTIME TFD_TIMER_ABSTIME
+ };
+
+
+__BEGIN_DECLS
+
+/* Return file descriptor for new interval timer source. */
+extern int timerfd_create (clockid_t __clock_id, int __flags) __THROW;
+
+/* Set next expiration time of interval timer source UFD to UTMR. If
+ FLAGS has the TFD_TIMER_ABSTIME flag set the timeout value is
+ absolute. Optionally return the old expiration time in OTMR. */
+extern int timerfd_settime (int __ufd, int __flags,
+ __const struct itimerspec *__utmr,
+ struct itimerspec *__otmr) __THROW;
+
+/* Return the next expiration time of UFD. */
+extern int timerfd_gettime (int __ufd, struct itimerspec *__otmr) __THROW;
+
+__END_DECLS
+
+#endif /* sys/timerfd.h */