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diff --git a/src/ceph/src/cls/rbd/cls_rbd.h b/src/ceph/src/cls/rbd/cls_rbd.h
new file mode 100644
index 0000000..f08fc1b
--- /dev/null
+++ b/src/ceph/src/cls/rbd/cls_rbd.h
@@ -0,0 +1,167 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+#ifndef __CEPH_CLS_RBD_H
+#define __CEPH_CLS_RBD_H
+
+#include "include/types.h"
+#include "include/buffer_fwd.h"
+#include "include/rbd_types.h"
+#include "common/Formatter.h"
+#include "cls/rbd/cls_rbd_types.h"
+
+/// information about our parent image, if any
+struct cls_rbd_parent {
+  int64_t pool;        ///< parent pool id
+  string id;           ///< parent image id
+  snapid_t snapid;     ///< parent snapid we refer to
+  uint64_t overlap;    ///< portion of this image mapped onto parent (bytes)
+
+  /// true if our parent pointer information is defined
+  bool exists() const {
+    return snapid != CEPH_NOSNAP && pool >= 0 && id.length() > 0 && overlap > 0;
+  }
+
+  cls_rbd_parent() : pool(-1), snapid(CEPH_NOSNAP), overlap(0) {}
+
+  void encode(bufferlist& bl) const {
+    ENCODE_START(1, 1, bl);
+    ::encode(pool, bl);
+    ::encode(id, bl);
+    ::encode(snapid, bl);
+    ::encode(overlap, bl);
+    ENCODE_FINISH(bl);
+  }
+  void decode(bufferlist::iterator& bl) {
+    DECODE_START(1, bl);
+    ::decode(pool, bl);
+    ::decode(id, bl);
+    ::decode(snapid, bl);
+    ::decode(overlap, bl);
+    DECODE_FINISH(bl);
+  }
+  void dump(Formatter *f) const {
+    f->dump_int("pool", pool);
+    f->dump_string("id", id);
+    f->dump_unsigned("snapid", snapid);
+    f->dump_unsigned("overlap", overlap);
+  }
+  static void generate_test_instances(list<cls_rbd_parent*>& o) {
+    o.push_back(new cls_rbd_parent);
+    cls_rbd_parent *t = new cls_rbd_parent;
+    t->pool = 1;
+    t->id = "foo";
+    t->snapid = 3;
+    t->overlap = 500;
+    o.push_back(t);
+  }
+};
+WRITE_CLASS_ENCODER(cls_rbd_parent)
+
+struct cls_rbd_snap {
+  snapid_t id;
+  string name;
+  uint64_t image_size;
+  uint64_t features;
+  uint8_t protection_status;
+  cls_rbd_parent parent;
+  uint64_t flags;
+  utime_t timestamp;
+  cls::rbd::SnapshotNamespaceOnDisk snapshot_namespace = {
+    cls::rbd::UserSnapshotNamespace{}};
+
+  /// true if we have a parent
+  bool has_parent() const {
+    return parent.exists();
+  }
+
+  cls_rbd_snap() : id(CEPH_NOSNAP), image_size(0), features(0),
+		   protection_status(RBD_PROTECTION_STATUS_UNPROTECTED),
+                   flags(0), timestamp(utime_t())
+    {}
+  void encode(bufferlist& bl) const {
+    ENCODE_START(6, 1, bl);
+    ::encode(id, bl);
+    ::encode(name, bl);
+    ::encode(image_size, bl);
+    ::encode(features, bl);
+    ::encode(parent, bl);
+    ::encode(protection_status, bl);
+    ::encode(flags, bl);
+    ::encode(snapshot_namespace, bl);
+    ::encode(timestamp, bl);
+    ENCODE_FINISH(bl);
+  }
+  void decode(bufferlist::iterator& p) {
+    DECODE_START(6, p);
+    ::decode(id, p);
+    ::decode(name, p);
+    ::decode(image_size, p);
+    ::decode(features, p);
+    if (struct_v >= 2) {
+      ::decode(parent, p);
+    }
+    if (struct_v >= 3) {
+      ::decode(protection_status, p);
+    }
+    if (struct_v >= 4) {
+      ::decode(flags, p);
+    }
+    if (struct_v >= 5) {
+      ::decode(snapshot_namespace, p);
+    }
+    if (struct_v >= 6) {
+      ::decode(timestamp, p);
+    }
+    DECODE_FINISH(p);
+  }
+  void dump(Formatter *f) const {
+    f->dump_unsigned("id", id);
+    f->dump_string("name", name);
+    f->dump_unsigned("image_size", image_size);
+    f->dump_unsigned("features", features);
+    if (has_parent()) {
+      f->open_object_section("parent");
+      parent.dump(f);
+      f->close_section();
+    }
+    switch (protection_status) {
+    case RBD_PROTECTION_STATUS_UNPROTECTED:
+      f->dump_string("protection_status", "unprotected");
+      break;
+    case RBD_PROTECTION_STATUS_UNPROTECTING:
+      f->dump_string("protection_status", "unprotecting");
+      break;
+    case RBD_PROTECTION_STATUS_PROTECTED:
+      f->dump_string("protection_status", "protected");
+      break;
+    default:
+      ceph_abort();
+    }
+  }
+  static void generate_test_instances(list<cls_rbd_snap*>& o) {
+    o.push_back(new cls_rbd_snap);
+    cls_rbd_snap *t = new cls_rbd_snap;
+    t->id = 1;
+    t->name = "snap";
+    t->image_size = 123456;
+    t->features = 123;
+    t->flags = 31;
+    o.push_back(t);
+    t = new cls_rbd_snap;
+    t->id = 2;
+    t->name = "snap2";
+    t->image_size = 12345678;
+    t->features = 1234;
+    t->parent.pool = 1;
+    t->parent.id = "parent";
+    t->parent.snapid = 456;
+    t->parent.overlap = 12345;
+    t->protection_status = RBD_PROTECTION_STATUS_PROTECTED;
+    t->flags = 14;
+    t->timestamp = utime_t();
+    o.push_back(t);
+  }
+};
+WRITE_CLASS_ENCODER(cls_rbd_snap)
+
+#endif