saner iov_iter initialization primitives

[deliverable/linux.git] / include / linux / uio.h

diff --git a/include/linux/uio.h b/include/linux/uio.h
index 71880299ed487b68dc7b278248a4fb29ddb6b6ec..1f4a37f1f025827c9a561a8e5a856680062227cc 100644 (file)
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -139,4 +139,18 @@ static inline void iov_iter_reexpand(struct iov_iter *i, size_t count)
 size_t csum_and_copy_to_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
 size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
 
+int import_iovec(int type, const struct iovec __user * uvector,
+                unsigned nr_segs, unsigned fast_segs,
+                struct iovec **iov, struct iov_iter *i);
+
+#ifdef CONFIG_COMPAT
+struct compat_iovec;
+int compat_import_iovec(int type, const struct compat_iovec __user * uvector,
+                unsigned nr_segs, unsigned fast_segs,
+                struct iovec **iov, struct iov_iter *i);
+#endif
+
+int import_single_range(int type, void __user *buf, size_t len,
+                struct iovec *iov, struct iov_iter *i);
+
 #endif