1 files changed, 65 insertions, 0 deletions
diff --git a/src/librbd/api/Io.h b/src/librbd/api/Io.h
new file mode 100644
index 000000000..4e2ec5028
--- /dev/null
+++ b/src/librbd/api/Io.h
@@ -0,0 +1,65 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef LIBRBD_API_IO_H
+#define LIBRBD_API_IO_H
+
+#include "include/int_types.h"
+#include "librbd/io/ReadResult.h"
+
+namespace librbd {
+
+struct ImageCtx;
+namespace io { struct AioCompletion; }
+
+namespace api {
+
+template<typename ImageCtxT = ImageCtx>
+struct Io {
+  static ssize_t read(ImageCtxT &image_ctx, uint64_t off, uint64_t len,
+                      io::ReadResult &&read_result, int op_flags);
+  static ssize_t write(ImageCtxT &image_ctx, uint64_t off, uint64_t len,
+                       bufferlist &&bl, int op_flags);
+  static ssize_t discard(ImageCtxT &image_ctx, uint64_t off, uint64_t len,
+                         uint32_t discard_granularity_bytes);
+  static ssize_t write_same(ImageCtxT &image_ctx, uint64_t off, uint64_t len,
+                            bufferlist &&bl, int op_flags);
+  static ssize_t write_zeroes(ImageCtxT &image_ctx, uint64_t off, uint64_t len,
+                              int zero_flags, int op_flags);
+  static ssize_t compare_and_write(ImageCtxT &image_ctx, uint64_t off,
+                                   uint64_t len, bufferlist &&cmp_bl,
+                                   bufferlist &&bl, uint64_t *mismatch_off,
+                                   int op_flags);
+  static int flush(ImageCtxT &image_ctx);
+
+  static void aio_read(ImageCtxT &image_ctx, io::AioCompletion *c, uint64_t off,
+                       uint64_t len, io::ReadResult &&read_result, int op_flags,
+                       bool native_async);
+  static void aio_write(ImageCtxT &image_ctx, io::AioCompletion *c,
+                        uint64_t off, uint64_t len, bufferlist &&bl,
+                        int op_flags, bool native_async);
+  static void aio_discard(ImageCtxT &image_ctx, io::AioCompletion *c,
+                          uint64_t off, uint64_t len,
+                          uint32_t discard_granularity_bytes,
+                          bool native_async);
+  static void aio_write_same(ImageCtxT &image_ctx, io::AioCompletion *c,
+                             uint64_t off, uint64_t len, bufferlist &&bl,
+                             int op_flags, bool native_async);
+  static void aio_write_zeroes(ImageCtxT &image_ctx, io::AioCompletion *c,
+                               uint64_t off, uint64_t len, int zero_flags,
+                               int op_flags, bool native_async);
+  static void aio_compare_and_write(ImageCtxT &image_ctx, io::AioCompletion *c,
+                                    uint64_t off, uint64_t len,
+                                    bufferlist &&cmp_bl, bufferlist &&bl,
+                                    uint64_t *mismatch_off, int op_flags,
+                                    bool native_async);
+  static void aio_flush(ImageCtxT &image_ctx, io::AioCompletion *c,
+                        bool native_async);
+};
+
+} // namespace api
+} // namespace librbd
+
+extern template class librbd::api::Io<librbd::ImageCtx>;
+
+#endif // LIBRBD_API_IO_H