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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "ShutDownCryptoRequest.h"
#include "common/dout.h"
#include "common/errno.h"
#include "librbd/Utils.h"
#include "librbd/crypto/CryptoImageDispatch.h"
#include "librbd/crypto/CryptoObjectDispatch.h"
#include "librbd/crypto/EncryptionFormat.h"
#include "librbd/io/ImageDispatcherInterface.h"
#include "librbd/io/ObjectDispatcherInterface.h"
#define dout_subsys ceph_subsys_rbd
#undef dout_prefix
#define dout_prefix *_dout << "librbd::crypto::ShutDownCryptoRequest: " \
<< this << " " << __func__ << ": "
namespace librbd {
namespace crypto {
using librbd::util::create_context_callback;
template <typename I>
ShutDownCryptoRequest<I>::ShutDownCryptoRequest(I* image_ctx,
Context* on_finish)
: m_image_ctx(image_ctx), m_on_finish(on_finish) {}
template <typename I>
void ShutDownCryptoRequest<I>::send() {
shut_down_object_dispatch();
}
template <typename I>
void ShutDownCryptoRequest<I>::shut_down_object_dispatch() {
if (!m_image_ctx->io_object_dispatcher->exists(
io::OBJECT_DISPATCH_LAYER_CRYPTO)) {
finish(0);
return;
}
auto ctx = create_context_callback<
ShutDownCryptoRequest<I>,
&ShutDownCryptoRequest<I>::handle_shut_down_object_dispatch>(this);
m_image_ctx->io_object_dispatcher->shut_down_dispatch(
io::OBJECT_DISPATCH_LAYER_CRYPTO, ctx);
}
template <typename I>
void ShutDownCryptoRequest<I>::handle_shut_down_object_dispatch(int r) {
ldout(m_image_ctx->cct, 20) << "r=" << r << dendl;
if (r < 0) {
lderr(m_image_ctx->cct) << "failed to shut down object dispatch: "
<< cpp_strerror(r) << dendl;
finish(r);
return;
}
shut_down_image_dispatch();
}
template <typename I>
void ShutDownCryptoRequest<I>::shut_down_image_dispatch() {
if (!m_image_ctx->io_image_dispatcher->exists(
io::IMAGE_DISPATCH_LAYER_CRYPTO)) {
finish(0);
return;
}
auto ctx = create_context_callback<
ShutDownCryptoRequest<I>,
&ShutDownCryptoRequest<I>::handle_shut_down_image_dispatch>(this);
m_image_ctx->io_image_dispatcher->shut_down_dispatch(
io::IMAGE_DISPATCH_LAYER_CRYPTO, ctx);
}
template <typename I>
void ShutDownCryptoRequest<I>::handle_shut_down_image_dispatch(int r) {
ldout(m_image_ctx->cct, 20) << "r=" << r << dendl;
if (r < 0) {
lderr(m_image_ctx->cct) << "failed to shut down image dispatch: "
<< cpp_strerror(r) << dendl;
}
finish(r);
}
template <typename I>
void ShutDownCryptoRequest<I>::finish(int r) {
ldout(m_image_ctx->cct, 20) << "r=" << r << dendl;
if (r == 0) {
{
std::unique_lock image_locker{m_image_ctx->image_lock};
m_image_ctx->encryption_format.reset();
}
if (m_image_ctx->parent != nullptr) {
// move to shutting down parent crypto
m_image_ctx = m_image_ctx->parent;
shut_down_object_dispatch();
return;
}
}
m_on_finish->complete(r);
delete this;
}
} // namespace crypto
} // namespace librbd
template class librbd::crypto::ShutDownCryptoRequest<librbd::ImageCtx>;
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