private void NativeDiskDisappeared(IntPtr disk, IntPtr context)
{
if (this.DeviceDisappeared == null)
{
// if no-one subscribed to this event, do nothing
return;
}
IntPtr device = DiskArbitration.DADiskCopyIOMedia(disk);
IntPtr propertiesRef = DiskArbitration.DADiskCopyDescription(disk);
NSDictionary properties = new NSDictionary(propertiesRef);
DeviceArguments deviceArguments = new DeviceArguments(properties, this);
if (properties.HasKey("DADeviceProtocol") && properties.GetStringValue("DADeviceProtocol") == "USB")
{
OsxUsbData usb = new OsxUsbData(device);
deviceArguments.UsbInfo = usb;
}
IOKit.IOObjectRelease(device);
this.DeviceDisappeared(this, deviceArguments);
GC.KeepAlive(this);
}
private void NativeDiskChanged(IntPtr disk, IntPtr keys, IntPtr context)
{
if (this.DeviceChanged == null)
{
// if no-one subscribed to this event, do nothing
return;
}
IntPtr device = DiskArbitration.DADiskCopyIOMedia(disk);
IntPtr propertiesRef = DiskArbitration.DADiskCopyDescription(disk);
// using MonoMac we can get a managed NSDictionary from the pointer
NSDictionary properties = new NSDictionary(propertiesRef);
DeviceArguments deviceArguments = new DeviceArguments(properties, this);
if (properties.HasKey("DADeviceProtocol") && properties.GetStringValue("DADeviceProtocol") == "USB")
{
OsxUsbData usb = new OsxUsbData(device);
deviceArguments.UsbInfo = usb;
}
IOKit.IOObjectRelease(device);
// trigger the public event for any subscribers
this.DeviceChanged(this, deviceArguments);
GC.KeepAlive(this);
}
public void UnmountDisk(string volumePath)
{
CFUrl url = MonoMac.CoreFoundation.CFUrl.FromUrlString(volumePath, null);
IntPtr disk = DiskArbitration.DADiskCreateFromVolumePath(IntPtr.Zero, da_session, url.Handle);
if (disk == IntPtr.Zero)
{
return;
}
DiskArbitration.UnmountCallback cb = (IntPtr unmounted_disk, IntPtr dissenter, IntPtr context) => {
Hyena.Log.DebugFormat("successfully unmounted {0}", volumePath);
};
DiskArbitration.DADiskUnmount(disk, 0, cb, IntPtr.Zero);
}
public void Dispose()
{
// unregister our callbacks
DiskArbitration.DAUnregisterCallback(da_session, callback_appeared, IntPtr.Zero);
DiskArbitration.DAUnregisterCallback(da_session, callback_changed, IntPtr.Zero);
DiskArbitration.DAUnregisterCallback(da_session, callback_disappeared, IntPtr.Zero);
var mode = MonoMac.CoreFoundation.CFRunLoop.CFDefaultRunLoopMode.Handle;
DiskArbitration.DASessionUnscheduleFromRunLoop(da_session, runloop, mode);
CoreFoundation.CFRelease(da_session);
// stop the main run loop which blocks the thread
CoreFoundation.CFRunLoopStop(runloop);
listenThread.Join();
GC.SuppressFinalize(this);
}
private void startArbiter()
{
diskAppearedCallback disk_appeared_callback = new diskAppearedCallback(NativeDiskAppeared);
diskChangedCallback disk_changed_callback = new diskChangedCallback(NativeDiskChanged);
diskDisappearedCallback disk_disappeared_callback = new diskDisappearedCallback(NativeDiskDisappeared);
// create a DiskArbitration session
IntPtr allocator = CoreFoundation.CFAllocatorGetDefault();
da_session = DiskArbitration.DASessionCreate(allocator);
this.callback_appeared = Marshal.GetFunctionPointerForDelegate(disk_appeared_callback);
this.callback_changed = Marshal.GetFunctionPointerForDelegate(disk_changed_callback);
this.callback_disappeared = Marshal.GetFunctionPointerForDelegate(disk_disappeared_callback);
DiskArbitration.DARegisterDiskAppearedCallback(da_session, IntPtr.Zero, callback_appeared, IntPtr.Zero);
DiskArbitration.DARegisterDiskDescriptionChangedCallback(da_session, IntPtr.Zero, IntPtr.Zero, callback_changed, IntPtr.Zero);
DiskArbitration.DARegisterDiskDisappearedCallback(da_session, IntPtr.Zero, callback_disappeared, IntPtr.Zero);
//IntPtr runloop = CFRunLoopGetCurrent ();
runloop = MonoMac.CoreFoundation.CFRunLoop.Current.Handle;
var mode = MonoMac.CoreFoundation.CFRunLoop.CFDefaultRunLoopMode.Handle;
DiskArbitration.DASessionScheduleWithRunLoop(da_session, runloop, mode);
// this blocks the thread
CoreFoundation.CFRunLoopRun();
// this code is actually never run, but keeps our native references
// and callbacks alive to prevent the GC from removing it
GC.KeepAlive(allocator);
GC.KeepAlive(da_session);
GC.KeepAlive(callback_changed);
GC.KeepAlive(callback_appeared);
GC.KeepAlive(callback_disappeared);
GC.KeepAlive(disk_appeared_callback);
GC.KeepAlive(disk_changed_callback);
GC.KeepAlive(disk_disappeared_callback);
}
