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-rw-r--r--bits/uio-ext.h28
-rw-r--r--bits/uio_lim.h (renamed from bits/uio.h)13
2 files changed, 36 insertions, 5 deletions
diff --git a/bits/uio-ext.h b/bits/uio-ext.h
new file mode 100644
index 0000000..cd4039c
--- /dev/null
+++ b/bits/uio-ext.h
@@ -0,0 +1,28 @@
+/* Operating system-specific extensions to sys/uio.h - generic version.
+ Copyright (C) 2017 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _BITS_UIO_EXT_H
+#define _BITS_UIO_EXT_H 1
+
+#ifndef _SYS_UIO_H
+# error "Never include <bits/uio-ext.h> directly; use <sys/uio.h> instead."
+#endif
+
+/* This operating system does not extend sys/uio.h. */
+
+#endif /* sys/uio_ext.h */
diff --git a/bits/uio.h b/bits/uio_lim.h
index 96a3a71..63afbdc 100644
--- a/bits/uio.h
+++ b/bits/uio_lim.h
@@ -1,4 +1,5 @@
-/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
+/* Implementation limits related to sys/uio.h - generic version.
+ Copyright (C) 2017 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
@@ -15,9 +16,11 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#ifndef _SYS_UIO_H
-# error "Never include <bits/uio.h> directly; use <sys/uio.h> instead."
-#endif
+#ifndef _BITS_UIO_LIM_H
+#define _BITS_UIO_LIM_H 1
+/* Maximum length of the 'struct iovec' array in a single call to
+ readv or writev. If there is no limit, the macro is not defined. */
+#undef __IOV_MAX
-#include <bits/types/struct_iovec.h>
+#endif