1 files changed, 46 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/uio.h b/sysdeps/unix/sysv/linux/bits/uio.h
new file mode 100644
index 0000000000..3f1dc01c73
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/uio.h
@@ -0,0 +1,46 @@
+/* Copyright (C) 1996, 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 _SYS_UIO_H
+#error "Never use <bits/uio.h> directly; include <sys/uio.h> instead."
+#endif
+
+
+#include <sys/types.h>
+
+
+/* We should normally use the Linux kernel header file to define this
+   type and macros but this calls for trouble because of the header
+   includes other kernel headers.  */
+
+/* Size of object which can be written atomically.
+
+   This macro has different values in different kernel versions.  The
+   latest versions of ther kernel use 1024 and this is good choice.  Since
+   the C library implementation of readv/writev is able to emulate the
+   functionality even if the currently running kernel does not support
+   this large value the readv/writev call will not fail because of this.  */
+#define UIO_MAXIOV	1024
+
+
+/* Structure for scatter/gather I/O.  */
+struct iovec
+  {
+    void *iov_base;	/* Pointer to data.  */
+    size_t iov_len;	/* Length of data.  */
+  };