hwservicemanager

Documentation

Overview

Package hwservicemanager provides a client for Android's HIDL hwservicemanager, which runs on /dev/hwbinder at handle 0. It allows looking up HIDL HAL services by their versioned fully-qualified names (e.g. "android.hardware.graphics.allocator@3.0::IAllocator/default").

Index

• func TransactHidl(ctx context.Context, transport binder.Transport, handle uint32, ...) (*parcel.Parcel, error)
• type HwServiceManager
  • func New(transport binder.Transport) *HwServiceManager
  • func (sm *HwServiceManager) GetService(ctx context.Context, fqName string, instance string) (_ uint32, _err error)

Functions

func TransactHidl

func TransactHidl(
	ctx context.Context,
	transport binder.Transport,
	handle uint32,
	code binder.TransactionCode,
	hp *hwparcel.HwParcel,
) (*parcel.Parcel, error)

TransactHidl performs a raw HIDL transaction on a handle obtained from GetService. The caller builds an HwParcel with the request data.

Types

type HwServiceManager

type HwServiceManager struct {
	// contains filtered or unexported fields
}

HwServiceManager provides access to Android's HIDL hwservicemanager.

func New

func New(transport binder.Transport) *HwServiceManager

New creates a HwServiceManager client using the given transport (which must be connected to /dev/hwbinder).

func (*HwServiceManager) GetService

func (sm *HwServiceManager) GetService(
	ctx context.Context,
	fqName string,
	instance string,
) (_ uint32, _err error)

GetService retrieves a HIDL service by its fully-qualified name and instance. fqName is e.g. "android.hardware.graphics.allocator@3.0::IAllocator" instance is e.g. "default"