| // Copyright 2021 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <fidl/fuchsia.devfs.test/cpp/wire.h> |
| #include <lib/driver/component/cpp/driver_base.h> |
| #include <lib/driver/component/cpp/driver_export.h> |
| #include <lib/driver/devfs/cpp/connector.h> |
| #include <lib/driver/logging/cpp/structured_logger.h> |
| |
| namespace fdf { |
| using namespace fuchsia_driver_framework; |
| } // namespace fdf |
| |
| namespace ft = fuchsia_devfs_test; |
| |
| namespace { |
| |
| class RootDriver : public fdf::DriverBase, public fidl::WireServer<ft::Device> { |
| static constexpr std::string_view name = "root-device"; |
| |
| public: |
| RootDriver(fdf::DriverStartArgs start_args, fdf::UnownedSynchronizedDispatcher driver_dispatcher) |
| : fdf::DriverBase(name, std::move(start_args), std::move(driver_dispatcher)), |
| devfs_connector_(fit::bind_member<&RootDriver::Serve>(this)) {} |
| |
| zx::result<> Start() override { return CreateDevfsNode(); } |
| |
| private: |
| zx::result<> CreateDevfsNode() { |
| fidl::Arena arena; |
| zx::result connector = devfs_connector_.Bind(dispatcher()); |
| if (connector.is_error()) { |
| return connector.take_error(); |
| } |
| |
| auto devfs = fuchsia_driver_framework::wire::DevfsAddArgs::Builder(arena).connector( |
| std::move(connector.value())); |
| |
| auto args = fuchsia_driver_framework::wire::NodeAddArgs::Builder(arena) |
| .name(arena, name) |
| .devfs_args(devfs.Build()) |
| .Build(); |
| |
| // Create endpoints of the `NodeController` for the node. |
| zx::result controller_endpoints = |
| fidl::CreateEndpoints<fuchsia_driver_framework::NodeController>(); |
| ZX_ASSERT_MSG(controller_endpoints.is_ok(), "Failed to create endpoints: %s", |
| controller_endpoints.status_string()); |
| |
| zx::result node_endpoints = fidl::CreateEndpoints<fuchsia_driver_framework::Node>(); |
| ZX_ASSERT_MSG(node_endpoints.is_ok(), "Failed to create endpoints: %s", |
| node_endpoints.status_string()); |
| |
| fidl::WireResult result = fidl::WireCall(node())->AddChild( |
| args, std::move(controller_endpoints->server), std::move(node_endpoints->server)); |
| if (!result.ok()) { |
| FDF_SLOG(ERROR, "Failed to add child", KV("status", result.status_string())); |
| return zx::error(result.status()); |
| } |
| controller_.Bind(std::move(controller_endpoints->client)); |
| node_.Bind(std::move(node_endpoints->client)); |
| return zx::ok(); |
| } |
| |
| void Serve(fidl::ServerEnd<ft::Device> server) { |
| bindings_.AddBinding(dispatcher(), std::move(server), this, fidl::kIgnoreBindingClosure); |
| } |
| |
| void UnbindNode(zx_status_t status) { |
| FDF_LOG(ERROR, "Failed to start root driver: %s", zx_status_get_string(status)); |
| node().reset(); |
| } |
| |
| // fidl::WireServer<ft::Device> |
| void Ping(PingCompleter::Sync& completer) override { completer.Reply(); } |
| |
| fidl::ServerBindingGroup<ft::Device> bindings_; |
| |
| fidl::WireSyncClient<fuchsia_driver_framework::Node> node_; |
| fidl::WireSyncClient<fuchsia_driver_framework::NodeController> controller_; |
| driver_devfs::Connector<ft::Device> devfs_connector_; |
| }; |
| |
| } // namespace |
| |
| FUCHSIA_DRIVER_EXPORT(RootDriver); |