Renaming xe::fs to xe::filesystem and xe::kernel::fs to xe::vfs.

Progress on #294.

src/xenia/vfs/devices/disc_image_file.cc

@@ -0,0 +1,57 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/vfs/devices/disc_image_file.h"
+
+#include <algorithm>
+
+#include "xenia/vfs/device.h"
+#include "xenia/vfs/devices/disc_image_entry.h"
+#include "xenia/vfs/gdfx.h"
+
+namespace xe {
+namespace vfs {
+
+DiscImageFile::DiscImageFile(KernelState* kernel_state, Mode mode,
+                             DiscImageEntry* entry)
+    : XFile(kernel_state, mode), entry_(entry) {}
+
+DiscImageFile::~DiscImageFile() { delete entry_; }
+
+const std::string& DiscImageFile::path() const { return entry_->path(); }
+
+const std::string& DiscImageFile::name() const { return entry_->name(); }
+
+Device* DiscImageFile::device() const { return entry_->device(); }
+
+X_STATUS DiscImageFile::QueryInfo(X_FILE_NETWORK_OPEN_INFORMATION* out_info) {
+  return entry_->QueryInfo(out_info);
+}
+
+X_STATUS DiscImageFile::QueryDirectory(X_FILE_DIRECTORY_INFORMATION* out_info,
+                                       size_t length, const char* file_name,
+                                       bool restart) {
+  return entry_->QueryDirectory(out_info, length, file_name, restart);
+}
+
+X_STATUS DiscImageFile::ReadSync(void* buffer, size_t buffer_length,
+                                 size_t byte_offset, size_t* out_bytes_read) {
+  GDFXEntry* gdfx_entry = entry_->gdfx_entry();
+  if (byte_offset >= gdfx_entry->size) {
+    return X_STATUS_END_OF_FILE;
+  }
+  size_t real_offset = gdfx_entry->offset + byte_offset;
+  size_t real_length = std::min(buffer_length, gdfx_entry->size - byte_offset);
+  std::memcpy(buffer, entry_->mmap()->data() + real_offset, real_length);
+  *out_bytes_read = real_length;
+  return X_STATUS_SUCCESS;
+}
+
+}  // namespace vfs
+}  // namespace xe