internal DeviceStackEntry(string driver, string driver_path, DeviceStackEntryType type)
{
Driver = driver;
DriverPath = driver_path;
Type = type;
}
private IReadOnlyList <DeviceStackEntry> BuildDeviceStack()
{
var setup_class = new DeviceSetupClass(Class);
var parent = Parent;
HashSet <string> upper_filters = new HashSet <string>(UpperFilters.Concat(setup_class.UpperFilters), StringComparer.OrdinalIgnoreCase);
HashSet <string> lower_filters = new HashSet <string>(LowerFilters.Concat(setup_class.LowerFilters), StringComparer.OrdinalIgnoreCase);
bool found_fdo = false;
bool found_pdo = false;
string service_name = GetServiceName(_service_info.Value.ServiceStartName);
if (string.IsNullOrWhiteSpace(service_name))
{
service_name = Service;
}
List <DeviceStackEntry> stack = new List <DeviceStackEntry>();
foreach (var driver_path in DeviceStackPaths)
{
DeviceStackEntryType type = DeviceStackEntryType.Unknown;
string name = GetServiceName(driver_path);
if (name.Equals(service_name, StringComparison.OrdinalIgnoreCase) && !found_fdo)
{
type = DeviceStackEntryType.Function;
found_fdo = true;
}
else if (Parent != null && name.Equals(Parent.Service, StringComparison.OrdinalIgnoreCase) && !found_pdo)
{
type = DeviceStackEntryType.Bus;
found_pdo = true;
}
else if (BusType == DeviceBusTypeGuids.GUID_BUS_TYPE_SW_DEVICE &&
!found_pdo &&
name.Equals("SoftwareDevice", StringComparison.OrdinalIgnoreCase))
{
type = DeviceStackEntryType.Bus;
found_pdo = true;
}
else if (name.Equals("PnpManager", StringComparison.OrdinalIgnoreCase))
{
if (Parent == null)
{
type = DeviceStackEntryType.Function;
found_fdo = true;
}
else
{
type = DeviceStackEntryType.Bus;
found_pdo = true;
}
}
else if (!found_fdo && upper_filters.Contains(name))
{
type = DeviceStackEntryType.UpperFilter;
}
else if (found_fdo && lower_filters.Contains(name))
{
type = DeviceStackEntryType.LowerFilter;
}
else
{
type = DeviceStackEntryType.Filter;
}
stack.Add(new DeviceStackEntry(name, driver_path, type));
}
return(stack.AsReadOnly());
}
