| // Copyright 2019 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. |
| |
| #ifndef SRC_STORAGE_LIB_DISK_INSPECTOR_INCLUDE_DISK_INSPECTOR_INSPECTOR_TRANSACTION_HANDLER_H_ |
| #define SRC_STORAGE_LIB_DISK_INSPECTOR_INCLUDE_DISK_INSPECTOR_INSPECTOR_TRANSACTION_HANDLER_H_ |
| |
| #include <lib/fpromise/result.h> |
| #include <zircon/types.h> |
| |
| #include <memory> |
| |
| #include <storage/buffer/block_buffer.h> |
| #include <storage/buffer/vmoid_registry.h> |
| #include <storage/operation/operation.h> |
| |
| #include "src/storage/lib/block_client/cpp/block_device.h" |
| #include "src/storage/lib/vfs/cpp/transaction/device_transaction_handler.h" |
| |
| namespace disk_inspector { |
| |
| // Vmo-based implementation of DeviceTransactionHandler for use with disk-inspect application. |
| class InspectorTransactionHandler : public fs::DeviceTransactionHandler, |
| public storage::VmoidRegistry { |
| public: |
| static zx_status_t Create(std::unique_ptr<block_client::BlockDevice> device, uint32_t block_size, |
| std::unique_ptr<InspectorTransactionHandler>* out); |
| |
| InspectorTransactionHandler(const InspectorTransactionHandler&) = delete; |
| InspectorTransactionHandler(InspectorTransactionHandler&&) = delete; |
| InspectorTransactionHandler& operator=(const InspectorTransactionHandler&) = delete; |
| InspectorTransactionHandler& operator=(InspectorTransactionHandler&&) = delete; |
| ~InspectorTransactionHandler() override = default; |
| |
| // fs::DeviceTransactionHandler interface: |
| uint64_t BlockNumberToDevice(uint64_t block_num) const final; |
| block_client::BlockDevice* GetDevice() final { return device_.get(); } |
| |
| // storage::VmoidRegistry interface: |
| zx_status_t BlockAttachVmo(const zx::vmo& vmo, storage::Vmoid* out) final; |
| zx_status_t BlockDetachVmo(storage::Vmoid vmoid) final; |
| |
| private: |
| explicit InspectorTransactionHandler(std::unique_ptr<block_client::BlockDevice> device, |
| fuchsia_hardware_block::wire::BlockInfo info, |
| uint32_t block_size) |
| : device_(std::move(device)), info_(info), block_size_(block_size) {} |
| |
| uint32_t FsBlockSize() const { return block_size_; } |
| uint32_t DeviceBlockSize() const { return info_.block_size; } |
| |
| std::unique_ptr<block_client::BlockDevice> device_; |
| fuchsia_hardware_block::wire::BlockInfo info_ = {}; |
| uint32_t block_size_; |
| }; |
| |
| } // namespace disk_inspector |
| |
| #endif // SRC_STORAGE_LIB_DISK_INSPECTOR_INCLUDE_DISK_INSPECTOR_INSPECTOR_TRANSACTION_HANDLER_H_ |