NTSTATUS
DriverEntry(__in PDRIVER_OBJECT DriverObject, __in PUNICODE_STRING RegistryPath)
{
NTSTATUS ntStatus;
UNICODE_STRING ntUnicodeString;
UNICODE_STRING ntWin32NameString;
PDEVICE_OBJECT deviceObject = NULL; // pointer to the instanced device object
// PDEVICE_DESCRIPTION devDes;
UNREFERENCED_PARAMETER(RegistryPath);
UNREFERENCED_PARAMETER(deviceObject);
RtlInitUnicodeString(&ntUnicodeString, NETMAP_NT_DEVICE_NAME);
ntStatus = IoCreateDevice(
DriverObject, // The Driver Object
0, // DeviceExtensionSize
&ntUnicodeString, // DeviceName
FILE_DEVICE_UNKNOWN, // Device type
FILE_DEVICE_SECURE_OPEN, // Device characteristics
FALSE, // Not exclusive
&deviceObject ); // Returned pointer to the device
if ( !NT_SUCCESS( ntStatus ) ) {
DbgPrint("NETMAP.SYS: Couldn't create the device object\n");
return ntStatus;
}
DbgPrint("NETMAP.SYS: Driver loaded at address 0x%p \n",&deviceObject);
// Init function pointers to major driver functions
DriverObject->MajorFunction[IRP_MJ_CREATE] = ioctlCreate;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = ioctlClose;
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = ioctlDeviceControl;
DriverObject->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = ioctlInternalDeviceControl;
//DriverObject->MajorFunction[IRP_MJ_READ] = ReadSync;
//DriverObject->MajorFunction[IRP_MJ_WRITE] = WriteSync;
DriverObject->DriverUnload = ioctlUnloadDriver;
// Initialize a Unicode String containing the Win32 name
// for our device.
RtlInitUnicodeString(&ntWin32NameString, NETMAP_DOS_DEVICE_NAME);
// Symlink creation
ntStatus = IoCreateSymbolicLink(&ntWin32NameString, &ntUnicodeString );
if (netmap_init() != 0) {
DbgPrint("NETMAP.SYS: Netmap init FAILED!!!\n");
ntStatus = STATUS_DEVICE_INSUFFICIENT_RESOURCES;
}
if ( !NT_SUCCESS( ntStatus ) ) {
//Clear all in case of not success
DbgPrint("NETMAP.SYS: Couldn't create driver\n");
IoDeleteDevice( deviceObject );
} else {
keinit_GST();
deviceObject->Flags |= DO_DIRECT_IO;
}
return ntStatus;
}
/*
* Kernel entry point.
*
* Initialize/finalize the module and return.
*
* Return 0 on success, errno on failure.
*/
static int
netmap_loader(__unused struct module *module, int event, __unused void *arg)
{
int error = 0;
switch (event) {
case MOD_LOAD:
error = netmap_init();
break;
case MOD_UNLOAD:
netmap_fini();
break;
default:
error = EOPNOTSUPP;
break;
}
return (error);
}