[Kernel] Add support for XFileEndOfFileInformation.

src/xenia/kernel/xboxkrnl/xboxkrnl_io.cc

@@ -393,11 +393,16 @@ dword_result_t NtSetInformationFile(
         file->set_position(xe::load_and_swap<uint64_t>(file_info));
         break;
       case XFileAllocationInformation:
-      case XFileEndOfFileInformation:
         assert_true(length == 8);
         info = 8;
-        XELOGW("NtSetInformationFile ignoring alloc/eof");
+        XELOGW("NtSetInformationFile ignoring alloc");
         break;
+      case XFileEndOfFileInformation: {
+        assert_true(length == 8);
+        auto eof = xe::load_and_swap<uint64_t>(file_info);
+        result = file->SetLength(eof);
+        break;
+      }
       case XFileCompletionInformation: {
         // Info contains IO Completion handle and completion key
         assert_true(length == 8);

src/xenia/kernel/xfile.cc

@@ -147,6 +147,8 @@ X_STATUS XFile::Write(const void* buffer, size_t buffer_length,
   return result;
 }
 
+X_STATUS XFile::SetLength(size_t length) { return file_->SetLength(length); }
+
 void XFile::RegisterIOCompletionPort(uint32_t key,
                                      object_ref<XIOCompletion> port) {
   std::lock_guard<std::mutex> lock(completion_port_lock_);

src/xenia/kernel/xfile.h

@@ -104,6 +104,8 @@ class XFile : public XObject {
   X_STATUS Write(const void* buffer, size_t buffer_length, size_t byte_offset,
                  size_t* out_bytes_written, uint32_t apc_context);
 
+  X_STATUS SetLength(size_t length);
+
   void RegisterIOCompletionPort(uint32_t key, object_ref<XIOCompletion> port);
   void RemoveIOCompletionPort(uint32_t key);