protected Volume(BlockDevice parent, Hal.Manager manager, Hal.Device device) : base(manager, device)
{
this.parent = parent ?? BlockDevice.Resolve <IBlockDevice> (manager, device.Parent);
method_names = HalDevice.PropertyExists(method_names_property)
? device.GetPropertyStringList(method_names_property)
: new string[0];
}
public IEnumerator <IVolume> GetEnumerator()
{
foreach (Hal.Device hal_device in HalDevice.GetChildrenAsDevice(HalManager))
{
Volume volume = Volume.Resolve(this, HalManager, hal_device);
if (volume != null)
{
yield return(volume);
}
}
}
private static string TryGetDevicePropertyString(HalDevice device, string propertyName)
{
//if the property does not exist, we don't care
try
{
return device.GetPropertyString(propertyName);
}
catch{}
return String.Empty;
}
private static ulong TryGetDevicePropertyInteger(HalDevice device, string propertyName)
{
//if the property does not exist, we don't care
try
{
return device.GetPropertyInteger(propertyName);
}
catch { }
return 0;
}
private static bool TryGetDevicePropertyBoolean(HalDevice device, string propertyName)
{
//if the property does not exist, we don't care
try
{
return device.GetPropertyBoolean(propertyName);
}
catch { }
return false;
}
private static bool DeviceIsOnUsbBus(Connection conn, string halNameOnDbus, HalDevice device)
{
bool deviceIsOnUsbSubsystem;
bool thereIsAPathToParent;
do
{
string subsystem = TryGetDevicePropertyString(device, "info.subsystem");
deviceIsOnUsbSubsystem = subsystem.Contains("usb");
string pathToParent = TryGetDevicePropertyString(device, "info.parent");
thereIsAPathToParent = String.IsNullOrEmpty(pathToParent);
device = conn.GetObject<HalDevice>(halNameOnDbus, new ObjectPath(pathToParent));
} while (!deviceIsOnUsbSubsystem && !thereIsAPathToParent);
return deviceIsOnUsbSubsystem;
}
