1 files changed, 54 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/preadv64.c b/sysdeps/unix/sysv/linux/preadv64.c
index 936ff1426c..18f55508ad 100644
--- a/sysdeps/unix/sysv/linux/preadv64.c
+++ b/sysdeps/unix/sysv/linux/preadv64.c
@@ -1,6 +1,55 @@
-#define PREADV preadv64
-#define PREADV_REPLACEMENT __atomic_preadv64_replacement
-#define PREAD __libc_pread64
-#define OFF_T off64_t
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
 
-#include "preadv.c"
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/uio.h>
+#include <sysdep-cancel.h>
+
+#ifdef __ASSUME_PREADV
+
+# ifndef __NR_preadv64
+#  define __NR_preadv64 __NR_preadv
+# endif
+
+ssize_t
+preadv64 (int fd, const struct iovec *vector, int count, off64_t offset)
+{
+  return SYSCALL_CANCEL (preadv64, fd, vector, count,
+			 __ALIGNMENT_ARG SYSCALL_LL64 (offset));
+}
+#else
+static ssize_t __atomic_preadv64_replacement (int, const struct iovec *,
+					      int, off64_t) internal_function;
+ssize_t
+preadv64 (int fd, const struct iovec *vector, int count, off64_t offset)
+{
+#ifdef __NR_preadv64
+  ssize_t result = SYSCALL_CANCEL (preadv64, fd, vector, count,
+				   __ALIGNMENT_ARG SYSCALL_LL64 (offset));
+  if (result >= 0 || errno != ENOSYS)
+    return result;
+#endif
+  return __atomic_preadv64_replacement (fd, vector, count, offset);
+}
+# define PREADV static internal_function __atomic_preadv64_replacement
+# define PREAD __pread64
+# define OFF_T off64_t
+# include <sysdeps/posix/preadv.c>
+#endif
+
+#if __WORDSIZE == 64 && !defined (__ASSUME_OFF_DIFF_OFF64)
+strong_alias (preadv64, preadv)
+#endif