kernelbinder

func (*Driver) AcquireHandle ¶

func (d *Driver) AcquireHandle(
	ctx context.Context,
	handle uint32,
) (_err error)

AcquireHandle increments the strong reference count for a binder handle.

func (*Driver) ClearDeathNotification ¶

func (d *Driver) ClearDeathNotification(
	ctx context.Context,
	handle uint32,
	recipient binder.DeathRecipient,
) (_err error)

ClearDeathNotification clears a death notification for a binder handle.

func (*Driver) Close ¶

func (d *Driver) Close(
	ctx context.Context,
) (_err error)

Close releases all death notifications, acquired binder handles, the mmap, and the file descriptor.

func (*Driver) RegisterReceiver ¶

func (d *Driver) RegisterReceiver(
	ctx context.Context,
	receiver binder.TransactionReceiver,
) uintptr

RegisterReceiver associates a TransactionReceiver with a unique cookie and starts the read loop if it has not been started yet. Returns the cookie that identifies this receiver in incoming BR_TRANSACTION events.

The cookie is the heap address of a receiverEntry allocated for this registration. The kernel binder driver uses the flat_binder_object.binder and .cookie fields to create/lookup binder nodes and to dispatch incoming transactions. Both fields must be non-zero process-space addresses -- synthetic counter values (1, 2, 3 ...) are rejected by the kernel. Storing the *receiverEntry in the receivers map keeps the object reachable, so its address remains valid until UnregisterReceiver is called.

func (*Driver) ReleaseHandle ¶

func (d *Driver) ReleaseHandle(
	ctx context.Context,
	handle uint32,
) (_err error)

ReleaseHandle decrements the strong reference count for a binder handle.

func (*Driver) Reply ¶

func (d *Driver) Reply(
	ctx context.Context,
	reply *parcel.Parcel,
) (_err error)

Reply sends BC_REPLY with the given parcel data back to the transaction originator.

func (*Driver) RequestDeathNotification ¶

func (d *Driver) RequestDeathNotification(
	ctx context.Context,
	handle uint32,
	recipient binder.DeathRecipient,
) (_err error)

RequestDeathNotification registers a death notification for a binder handle. Returns an error if the handle already has a registered death recipient; call ClearDeathNotification first to replace it.

func (*Driver) Transact ¶

func (d *Driver) Transact(
	ctx context.Context,
	handle uint32,
	code binder.TransactionCode,
	flags binder.TransactionFlags,
	data *parcel.Parcel,
) (_reply *parcel.Parcel, _err error)

Transact performs a synchronous binder transaction.

func (*Driver) UnregisterReceiver ¶

func (d *Driver) UnregisterReceiver(
	ctx context.Context,
	cookie uintptr,
)

UnregisterReceiver removes a TransactionReceiver by its cookie.