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-rw-r--r--include/uapi/linux/uio.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/include/uapi/linux/uio.h b/include/uapi/linux/uio.h
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+++ b/include/uapi/linux/uio.h
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+/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+/*
+ * Berkeley style UIO structures - Alan Cox 1994.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#ifndef _UAPI__LINUX_UIO_H
+#define _UAPI__LINUX_UIO_H
+
+#include <linux/compiler.h>
+#include <linux/types.h>
+
+
+struct iovec
+{
+ void __user *iov_base; /* BSD uses caddr_t (1003.1g requires void *) */
+ __kernel_size_t iov_len; /* Must be size_t (1003.1g) */
+};
+
+/*
+ * UIO_MAXIOV shall be at least 16 1003.1g (5.4.1.1)
+ */
+
+#define UIO_FASTIOV 8
+#define UIO_MAXIOV 1024
+
+
+#endif /* _UAPI__LINUX_UIO_H */