+ @retval EFI_SUCCESS The feature is enabled.\r
+ @retval EFI_OUT_OF_RESOURCES There is not enough mnemory available.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+InernalEfiShellStartMonitor(\r
+ VOID\r
+ )\r
+{\r
+ EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *SimpleEx;\r
+ EFI_KEY_DATA KeyData;\r
+ EFI_STATUS Status;\r
+\r
+ Status = gBS->OpenProtocol(\r
+ gST->ConsoleInHandle,\r
+ &gEfiSimpleTextInputExProtocolGuid,\r
+ (VOID**)&SimpleEx,\r
+ gImageHandle,\r
+ NULL,\r
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL);\r
+ if (EFI_ERROR(Status)) {\r
+ ShellPrintHiiEx(\r
+ -1, \r
+ -1, \r
+ NULL,\r
+ STRING_TOKEN (STR_SHELL_NO_IN_EX),\r
+ ShellInfoObject.HiiHandle);\r
+ return (EFI_SUCCESS);\r
+ }\r
+\r
+ if (ShellInfoObject.NewEfiShellProtocol->ExecutionBreak == NULL) {\r
+ return (EFI_UNSUPPORTED);\r
+ }\r
+\r
+ KeyData.KeyState.KeyToggleState = 0;\r
+ KeyData.Key.ScanCode = 0;\r
+ KeyData.KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID|EFI_LEFT_CONTROL_PRESSED;\r
+ KeyData.Key.UnicodeChar = L'c';\r
+\r
+ Status = SimpleEx->RegisterKeyNotify(\r
+ SimpleEx,\r
+ &KeyData,\r
+ NotificationFunction,\r
+ &ShellInfoObject.CtrlCNotifyHandle1);\r
+ \r
+ KeyData.KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID|EFI_RIGHT_CONTROL_PRESSED;\r
+ if (!EFI_ERROR(Status)) {\r
+ Status = SimpleEx->RegisterKeyNotify(\r
+ SimpleEx,\r
+ &KeyData,\r
+ NotificationFunction,\r
+ &ShellInfoObject.CtrlCNotifyHandle2);\r
+ }\r
+ KeyData.KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID|EFI_LEFT_CONTROL_PRESSED;\r
+ KeyData.Key.UnicodeChar = 3;\r
+ if (!EFI_ERROR(Status)) {\r
+ Status = SimpleEx->RegisterKeyNotify(\r
+ SimpleEx,\r
+ &KeyData,\r
+ NotificationFunction,\r
+ &ShellInfoObject.CtrlCNotifyHandle3);\r
+ }\r
+ KeyData.KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID|EFI_RIGHT_CONTROL_PRESSED;\r
+ if (!EFI_ERROR(Status)) {\r
+ Status = SimpleEx->RegisterKeyNotify(\r
+ SimpleEx,\r
+ &KeyData,\r
+ NotificationFunction,\r
+ &ShellInfoObject.CtrlCNotifyHandle4);\r
+ }\r
+ return (Status);\r
+}\r