142 lines
5.0 KiB
C++
142 lines
5.0 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2013 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#ifndef XENIA_KERNEL_XFILE_H_
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#define XENIA_KERNEL_XFILE_H_
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#include <string>
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#include "xenia/base/filesystem.h"
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#include "xenia/kernel/xevent.h"
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#include "xenia/kernel/xiocompletion.h"
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#include "xenia/kernel/xobject.h"
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#include "xenia/vfs/device.h"
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#include "xenia/vfs/entry.h"
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#include "xenia/vfs/file.h"
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#include "xenia/xbox.h"
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namespace xe {
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namespace kernel {
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// https://msdn.microsoft.com/en-us/library/windows/hardware/ff545822.aspx
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struct X_FILE_NETWORK_OPEN_INFORMATION {
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xe::be<uint64_t> creation_time;
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xe::be<uint64_t> last_access_time;
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xe::be<uint64_t> last_write_time;
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xe::be<uint64_t> change_time;
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xe::be<uint64_t> allocation_size;
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xe::be<uint64_t> end_of_file; // size in bytes
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xe::be<uint32_t> attributes;
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xe::be<uint32_t> pad;
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};
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// https://msdn.microsoft.com/en-us/library/windows/hardware/ff540248.aspx
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class X_FILE_DIRECTORY_INFORMATION {
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public:
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// FILE_DIRECTORY_INFORMATION
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xe::be<uint32_t> next_entry_offset; // 0x0
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xe::be<uint32_t> file_index; // 0x4
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xe::be<uint64_t> creation_time; // 0x8
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xe::be<uint64_t> last_access_time; // 0x10
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xe::be<uint64_t> last_write_time; // 0x18
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xe::be<uint64_t> change_time; // 0x20
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xe::be<uint64_t> end_of_file; // 0x28 size in bytes
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xe::be<uint64_t> allocation_size; // 0x30
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xe::be<uint32_t> attributes; // 0x38 X_FILE_ATTRIBUTES
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xe::be<uint32_t> file_name_length; // 0x3C
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char file_name[1]; // 0x40
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void Write(uint8_t* base, uint32_t p) {
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uint8_t* dst = base + p;
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uint8_t* src = reinterpret_cast<uint8_t*>(this);
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X_FILE_DIRECTORY_INFORMATION* info;
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do {
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info = reinterpret_cast<X_FILE_DIRECTORY_INFORMATION*>(src);
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xe::store_and_swap<uint32_t>(dst, info->next_entry_offset);
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xe::store_and_swap<uint32_t>(dst + 4, info->file_index);
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xe::store_and_swap<uint64_t>(dst + 8, info->creation_time);
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xe::store_and_swap<uint64_t>(dst + 16, info->last_access_time);
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xe::store_and_swap<uint64_t>(dst + 24, info->last_write_time);
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xe::store_and_swap<uint64_t>(dst + 32, info->change_time);
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xe::store_and_swap<uint64_t>(dst + 40, info->end_of_file);
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xe::store_and_swap<uint64_t>(dst + 48, info->allocation_size);
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xe::store_and_swap<uint32_t>(dst + 56, info->attributes);
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xe::store_and_swap<uint32_t>(dst + 60, info->file_name_length);
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memcpy(dst + 64, info->file_name, info->file_name_length);
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dst += info->next_entry_offset;
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src += info->next_entry_offset;
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} while (info->next_entry_offset != 0);
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}
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};
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static_assert_size(X_FILE_DIRECTORY_INFORMATION, 72);
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class XFile : public XObject {
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public:
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static const Type kType = kTypeFile;
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XFile(KernelState* kernel_state, vfs::File* file);
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~XFile() override;
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vfs::Device* device() const { return file_->entry()->device(); }
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vfs::Entry* entry() const { return file_->entry(); }
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vfs::File* file() const { return file_; }
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uint32_t file_access() const { return file_->file_access(); }
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const std::string& path() const { return file_->entry()->path(); }
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const std::string& name() const { return file_->entry()->name(); }
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size_t position() const { return position_; }
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void set_position(size_t value) { position_ = value; }
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X_STATUS QueryDirectory(X_FILE_DIRECTORY_INFORMATION* out_info, size_t length,
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const char* file_name, bool restart);
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X_STATUS Read(void* buffer, size_t buffer_length, size_t byte_offset,
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size_t* out_bytes_read, uint32_t apc_context);
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X_STATUS Write(const void* buffer, size_t buffer_length, size_t byte_offset,
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size_t* out_bytes_written, uint32_t apc_context);
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void RegisterIOCompletionPort(uint32_t key, object_ref<XIOCompletion> port);
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void RemoveIOCompletionPort(uint32_t key);
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bool Save(ByteStream* stream);
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static object_ref<XFile> Restore(KernelState* kernel_state,
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ByteStream* stream);
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protected:
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void NotifyIOCompletionPorts(XIOCompletion::IONotification& notification);
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xe::threading::WaitHandle* GetWaitHandle() override {
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return async_event_.get();
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}
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private:
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XFile();
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vfs::File* file_ = nullptr;
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std::unique_ptr<threading::Event> async_event_ = nullptr;
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std::mutex completion_port_lock_;
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std::vector<std::pair<uint32_t, object_ref<XIOCompletion>>> completion_ports_;
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// TODO(benvanik): create flags, open state, etc.
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size_t position_ = 0;
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xe::filesystem::WildcardEngine find_engine_;
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size_t find_index_ = 0;
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};
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} // namespace kernel
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} // namespace xe
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#endif // XENIA_KERNEL_XFILE_H_
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