cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / x86_64-linux-gnu / bits / uio_lim.h

diff --git a/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/bits/uio_lim.h b/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/bits/uio_lim.h
new file mode 100644 (file)
index 0000000..a443fd8
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/bits/uio_lim.h
@@ -0,0 +1,32 @@
+/* Implementation limits related to sys/uio.h - Linux version.
+   Copyright (C) 2017-2018 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_LIM_H
+#define _BITS_UIO_LIM_H 1
+
+/* Maximum length of the 'struct iovec' array in a single call to
+   readv or writev.
+
+   This macro has different values in different kernel versions.  The
+   latest versions of the 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 __IOV_MAX      1024
+
+#endif