initial code repo

[stor4nfv.git] / src / ceph / src / librbd / object_map / UnlockRequest.cc

diff --git a/src/ceph/src/librbd/object_map/UnlockRequest.cc b/src/ceph/src/librbd/object_map/UnlockRequest.cc
new file mode 100644 (file)
index 0000000..ad9d3d9
--- /dev/null
+++ b/src/ceph/src/librbd/object_map/UnlockRequest.cc
@@ -0,0 +1,66 @@
+// -*- mode:C; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "librbd/object_map/UnlockRequest.h"
+#include "cls/lock/cls_lock_client.h"
+#include "common/dout.h"
+#include "common/errno.h"
+#include "librbd/ImageCtx.h"
+#include "librbd/ObjectMap.h"
+#include "librbd/Utils.h"
+
+#define dout_subsys ceph_subsys_rbd
+#undef dout_prefix
+#define dout_prefix *_dout << "librbd::object_map::UnlockRequest: "
+
+namespace librbd {
+namespace object_map {
+
+using util::create_rados_callback;
+
+template <typename I>
+UnlockRequest<I>::UnlockRequest(I &image_ctx, Context *on_finish)
+  : m_image_ctx(image_ctx), m_on_finish(on_finish) {
+}
+
+template <typename I>
+void UnlockRequest<I>::send() {
+  send_unlock();
+}
+
+template <typename I>
+void UnlockRequest<I>::send_unlock() {
+  CephContext *cct = m_image_ctx.cct;
+  std::string oid(ObjectMap<>::object_map_name(m_image_ctx.id, CEPH_NOSNAP));
+  ldout(cct, 10) << this << " " << __func__ << ": oid=" << oid << dendl;
+
+  librados::ObjectWriteOperation op;
+  rados::cls::lock::unlock(&op, RBD_LOCK_NAME, "");
+
+  using klass = UnlockRequest<I>;
+  librados::AioCompletion *rados_completion =
+    create_rados_callback<klass, &klass::handle_unlock>(this);
+  int r = m_image_ctx.md_ctx.aio_operate(oid, rados_completion, &op);
+  assert(r == 0);
+  rados_completion->release();
+}
+
+template <typename I>
+Context *UnlockRequest<I>::handle_unlock(int *ret_val) {
+  CephContext *cct = m_image_ctx.cct;
+  ldout(cct, 10) << this << " " << __func__ << ": r=" << *ret_val << dendl;
+
+  if (*ret_val < 0 && *ret_val != -ENOENT) {
+    lderr(m_image_ctx.cct) << "failed to release object map lock: "
+                           << cpp_strerror(*ret_val) << dendl;
+
+  }
+
+  *ret_val = 0;
+  return m_on_finish;
+}
+
+} // namespace object_map
+} // namespace librbd
+
+template class librbd::object_map::UnlockRequest<librbd::ImageCtx>;