Added experimental memory mapped file creation

Author: nefarius

sys/Device.h

@@ -287,6 +287,11 @@ typedef struct _DEVICE_CONTEXT
 	//
 	HANDLE ConfigurationReloadWaitHandle;
 
+	//
+	// Handle to shared memory for XInput Bridge DLL IPC
+	// 
+	HANDLE XInputBridgeInputReportHandle;
+
 } DEVICE_CONTEXT, * PDEVICE_CONTEXT;
 
 //

sys/DsHidMiniDrv.c

@@ -245,6 +245,40 @@ DMF_DsHidMini_Open(
 	// 
 	numInstances++;
 
+	// 
+	// Admins & System: all access
+	// Everyone: read access
+	// 
+	PWSTR szSD = L"D:(A;OICI;GA;;;BA)(A;OICI;GA;;;SY)(A;OICI;GR;;;WD)";
+	SECURITY_ATTRIBUTES sa;
+	sa.nLength = sizeof(SECURITY_ATTRIBUTES);
+	sa.bInheritHandle = FALSE;
+	ConvertStringSecurityDescriptorToSecurityDescriptorW(
+		szSD,
+		SDDL_REVISION_1,
+		&((&sa)->lpSecurityDescriptor),
+		NULL
+	);
+
+	PCWSTR objName = L"Global\\MyFileMappingObject";
+
+	pDevCtx->XInputBridgeInputReportHandle = CreateFileMappingW(
+		INVALID_HANDLE_VALUE,
+		&sa,
+		PAGE_READWRITE,
+		0,
+		sizeof(DS3_RAW_INPUT_REPORT),
+		objName
+	);
+
+	if (pDevCtx->XInputBridgeInputReportHandle == NULL)
+	{
+		TraceError(
+			TRACE_DSHIDMINIDRV,
+			"Failed to create file mapping"
+		);
+	}
+	
 	FuncExit(TRACE_DSHIDMINIDRV, "status=%!STATUS!", status);
 
 	return status;
@@ -279,6 +313,11 @@ DMF_DsHidMini_Close(
 	// 
 	numInstances--;
 
+	if (pDevCtx->XInputBridgeInputReportHandle)
+	{
+		CloseHandle(pDevCtx->XInputBridgeInputReportHandle);
+	}
+	
 	FuncExitNoReturn(TRACE_DSHIDMINIDRV);
 }