From 64889277bc3c36dde9f8168642b85f37b5cd8f46 Mon Sep 17 00:00:00 2001
From: Glauber Costa <glommer@cloudius-systems.com>
Date: Mon, 3 Mar 2014 16:51:30 +0400
Subject: [PATCH] uio: super structure around uio
I am using the same name as solaris code expect. The first field is an uio,
and the rest is something that we will use in specialized functions.
Signed-off-by: Glauber Costa <glommer@cloudius-systems.com>
---
include/osv/uio.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/include/osv/uio.h b/include/osv/uio.h
index b57b81e51..bd9ff17b0 100644
--- a/include/osv/uio.h
+++ b/include/osv/uio.h
@@ -60,6 +60,16 @@ struct uio {
enum uio_rw uio_rw; /* operation */
};
+// This layout support only one buffer per uio, which means that it will
+// only work for a iovcnt of 1. We can extend later if needed, but because we
+// are reading it page by page, it should be fine for now.
+struct uio_mapper {
+ struct uio uio;
+ size_t buf_size;
+ size_t buf_off;
+ void *buffer;
+};
+
int copyinuio(struct iovec *iovp, u_int iovcnt, struct uio **uiop);
int uiomove(void *cp, int n, struct uio *uio);
--
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