Remove vfs dependency on kernel, implement I/O completion ports

src/xenia/vfs/file.h

@@ -0,0 +1,61 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2015 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_VFS_FILE_H_
+#define XENIA_VFS_FILE_H_
+
+#include <cstdint>
+
+#include "xenia/xbox.h"
+
+namespace xe {
+namespace vfs {
+
+class Entry;
+
+class File {
+ public:
+  File(uint32_t file_access, Entry* entry)
+      : file_access_(file_access), entry_(entry) {}
+  virtual ~File() = default;
+
+  virtual void Destroy() = 0;
+
+  virtual X_STATUS ReadSync(void* buffer, size_t buffer_length,
+                            size_t byte_offset, size_t* out_bytes_read) = 0;
+  virtual X_STATUS WriteSync(const void* buffer, size_t buffer_length,
+                             size_t byte_offset, size_t* out_bytes_written) = 0;
+
+  // TODO: Parameters
+  virtual X_STATUS ReadAsync(void* buffer, size_t buffer_length,
+                             size_t byte_offset, size_t* out_bytes_read) {
+    return X_STATUS_NOT_IMPLEMENTED;
+  }
+
+  // TODO: Parameters
+  virtual X_STATUS WriteAsync(const void* buffer, size_t buffer_length,
+                              size_t byte_offset, size_t* out_bytes_written) {
+    return X_STATUS_NOT_IMPLEMENTED;
+  }
+
+  // xe::filesystem::FileAccess
+  uint32_t file_access() const { return file_access_; }
+  const Entry* entry() const { return entry_; }
+  Entry* entry() { return entry_; }
+
+ protected:
+  // xe::filesystem::FileAccess
+  uint32_t file_access_ = 0;
+  Entry* entry_ = nullptr;
+};
+
+}  // namespace vfs
+}  // namespace xe
+
+#endif  // XENIA_VFS_FILE_H_