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-rw-r--r--src/librbd/image/DetachChildRequest.h119
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diff --git a/src/librbd/image/DetachChildRequest.h b/src/librbd/image/DetachChildRequest.h
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+++ b/src/librbd/image/DetachChildRequest.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_IMAGE_DETACH_CHILD_REQUEST_H
+#define CEPH_LIBRBD_IMAGE_DETACH_CHILD_REQUEST_H
+
+#include "include/int_types.h"
+#include "include/buffer.h"
+#include "include/rados/librados.hpp"
+#include "librbd/Types.h"
+#include "librbd/internal.h"
+
+class Context;
+
+namespace librbd {
+
+class ImageCtx;
+
+namespace image {
+
+template <typename ImageCtxT = ImageCtx>
+class DetachChildRequest {
+public:
+ static DetachChildRequest* create(ImageCtxT& image_ctx, Context* on_finish) {
+ return new DetachChildRequest(image_ctx, on_finish);
+ }
+
+ DetachChildRequest(ImageCtxT& image_ctx, Context* on_finish)
+ : m_image_ctx(image_ctx), m_on_finish(on_finish) {
+ }
+ ~DetachChildRequest();
+
+ void send();
+
+private:
+ /**
+ * @verbatim
+ *
+ * <start>
+ * |
+ * (v1) | (v2)
+ * /--------------/ \--------------\
+ * | |
+ * v v
+ * REMOVE_CHILD CHILD_DETACH
+ * | |
+ * | v
+ * | GET_SNAPSHOT
+ * | (snapshot in-use) . |
+ * |/. . . . . . . . . . . . . . . |
+ * | v
+ * | OPEN_PARENT
+ * | |
+ * | v (has more children)
+ * | REMOVE_SNAPSHOT ---------------\
+ * | | |
+ * | v (noent) |
+ * | (auto-delete when GET_PARENT_TRASH_ENTRY . . . .\|
+ * | last child detached) | |
+ * | v v
+ * | REMOVE_PARENT_FROM_TRASH CLOSE_PARENT
+ * | | |
+ * |/------------------------------/--------------------------/
+ * |
+ * v
+ * <finish>
+ *
+ * @endverbatim
+ */
+
+ ImageCtxT& m_image_ctx;
+ Context* m_on_finish;
+
+ librados::IoCtx m_parent_io_ctx;
+ cls::rbd::ParentImageSpec m_parent_spec;
+ std::string m_parent_header_name;
+
+ cls::rbd::SnapshotNamespace m_parent_snap_namespace;
+ std::string m_parent_snap_name;
+
+ ImageCtxT* m_parent_image_ctx = nullptr;
+
+ ceph::bufferlist m_out_bl;
+ NoOpProgressContext m_no_op;
+
+ void clone_v2_child_detach();
+ void handle_clone_v2_child_detach(int r);
+
+ void clone_v2_get_snapshot();
+ void handle_clone_v2_get_snapshot(int r);
+
+ void clone_v2_open_parent();
+ void handle_clone_v2_open_parent(int r);
+
+ void clone_v2_remove_snapshot();
+ void handle_clone_v2_remove_snapshot(int r);
+
+ void clone_v2_get_parent_trash_entry();
+ void handle_clone_v2_get_parent_trash_entry(int r);
+
+ void clone_v2_remove_parent_from_trash();
+ void handle_clone_v2_remove_parent_from_trash(int r);
+
+ void clone_v2_close_parent();
+ void handle_clone_v2_close_parent(int r);
+
+ void clone_v1_remove_child();
+ void handle_clone_v1_remove_child(int r);
+
+ void finish(int r);
+
+};
+
+} // namespace image
+} // namespace librbd
+
+extern template class librbd::image::DetachChildRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_IMAGE_DETACH_CHILD_REQUEST_H