Index: uClibc-0.9.29/libc/sysdeps/linux/common/openat.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ uClibc-0.9.29/libc/sysdeps/linux/common/openat.c	2008-10-27 12:59:25.000000000 +0100
@@ -0,0 +1,44 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * openat() for uClibc
+ *
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/param.h>
+#include <linux/version.h>
+
+extern __typeof(openat) __libc_openat;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,52)
+#define __NR___syscall_openat __NR_openat
+static inline _syscall4(int, __syscall_openat, int, fd, const char *, file,
+		int, flags, __kernel_mode_t, mode);
+
+libc_hidden_proto(__libc_openat)
+int __libc_openat(int fd, const char *file, int oflag, ...)
+{
+	mode_t mode = 0;
+
+	if (oflag & O_CREAT) {
+		va_list arg;
+		va_start (arg, oflag);
+		mode = va_arg (arg, mode_t);
+		va_end (arg);
+	}
+
+	return __syscall_openat(fd, file, oflag, mode);
+}
+libc_hidden_def(__libc_openat)
+
+libc_hidden_proto(openat)
+weak_alias(__libc_openat,openat)
+libc_hidden_weak(openat)
+#endif
Index: uClibc-0.9.29/include/fcntl.h
===================================================================
--- uClibc-0.9.29.orig/include/fcntl.h	2008-10-27 12:52:04.000000000 +0100
+++ uClibc-0.9.29/include/fcntl.h	2008-10-27 13:08:11.000000000 +0100
@@ -56,7 +56,7 @@
 # define SEEK_END	2	/* Seek from end of file.  */
 #endif	/* XPG */
 
-#if 0 /*def __USE_GNU*/
+#ifdef __USE_GNU
 # define AT_FDCWD		-100	/* Special value used to indicate
 					   openat should use the current
 					   working directory. */
@@ -103,7 +103,7 @@
 extern int open64 (__const char *__file, int __oflag, ...) __nonnull ((1));
 #endif
 
-#if 0 /*def __USE_GNU*/
+#ifdef __USE_GNU
 /* Similar to OPEN but a relative path name is interpreted relative to
    the directory for which FD is a descriptor.