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reactos/sdk/include/wdf/kmdf/1.17/wdfobject.h

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/*++
Copyright (c) Microsoft Corporation. All rights reserved.
_WdfVersionBuild_
Module Name:
wdfobject.h
Abstract:
This is the C header for driver frameworks objects
Revision History:
--*/
//
// NOTE: This header is generated by stubwork. Please make any
// modifications to the corresponding template files
// (.x or .y) and use stubwork to regenerate the header
//
#ifndef _WDFOBJECT_H_
#define _WDFOBJECT_H_
#ifndef WDF_EXTERN_C
#ifdef __cplusplus
#define WDF_EXTERN_C extern "C"
#define WDF_EXTERN_C_START extern "C" {
#define WDF_EXTERN_C_END }
#else
#define WDF_EXTERN_C
#define WDF_EXTERN_C_START
#define WDF_EXTERN_C_END
#endif
#endif
WDF_EXTERN_C_START
#if (NTDDI_VERSION >= NTDDI_WIN2K)
//
// Specifies the highest IRQL level allowed on callbacks
// to the device driver.
//
typedef enum _WDF_EXECUTION_LEVEL {
WdfExecutionLevelInvalid = 0x00,
WdfExecutionLevelInheritFromParent,
WdfExecutionLevelPassive,
WdfExecutionLevelDispatch,
} WDF_EXECUTION_LEVEL;
//
// Specifies the concurrency of callbacks to the device driver
//
typedef enum _WDF_SYNCHRONIZATION_SCOPE {
WdfSynchronizationScopeInvalid = 0x00,
WdfSynchronizationScopeInheritFromParent,
WdfSynchronizationScopeDevice,
WdfSynchronizationScopeQueue,
WdfSynchronizationScopeNone,
} WDF_SYNCHRONIZATION_SCOPE;
typedef
_Function_class_(EVT_WDF_OBJECT_CONTEXT_CLEANUP)
_IRQL_requires_same_
_IRQL_requires_max_(DISPATCH_LEVEL)
VOID
STDCALL
EVT_WDF_OBJECT_CONTEXT_CLEANUP(
_In_
WDFOBJECT Object
);
typedef EVT_WDF_OBJECT_CONTEXT_CLEANUP *PFN_WDF_OBJECT_CONTEXT_CLEANUP;
typedef
_Function_class_(EVT_WDF_OBJECT_CONTEXT_DESTROY)
_IRQL_requires_same_
_IRQL_requires_max_(DISPATCH_LEVEL)
VOID
STDCALL
EVT_WDF_OBJECT_CONTEXT_DESTROY(
_In_
WDFOBJECT Object
);
typedef EVT_WDF_OBJECT_CONTEXT_DESTROY *PFN_WDF_OBJECT_CONTEXT_DESTROY;
typedef const struct _WDF_OBJECT_CONTEXT_TYPE_INFO *PCWDF_OBJECT_CONTEXT_TYPE_INFO;
typedef struct _WDF_OBJECT_ATTRIBUTES {
//
// Size in bytes of this structure
//
ULONG Size;
//
// Function to call when the object is deleted
//
PFN_WDF_OBJECT_CONTEXT_CLEANUP EvtCleanupCallback;
//
// Function to call when the objects memory is destroyed when the
// the last reference count goes to zero
//
PFN_WDF_OBJECT_CONTEXT_DESTROY EvtDestroyCallback;
//
// Execution level constraints for Object
//
WDF_EXECUTION_LEVEL ExecutionLevel;
//
// Synchronization level constraint for Object
//
WDF_SYNCHRONIZATION_SCOPE SynchronizationScope;
//
// Optional Parent Object
//
WDFOBJECT ParentObject;
//
// Overrides the size of the context allocated as specified by
// ContextTypeInfo->ContextSize
//
size_t ContextSizeOverride;
//
// Pointer to the type information to be associated with the object
//
PCWDF_OBJECT_CONTEXT_TYPE_INFO ContextTypeInfo;
} WDF_OBJECT_ATTRIBUTES, *PWDF_OBJECT_ATTRIBUTES;
FORCEINLINE
VOID
WDF_OBJECT_ATTRIBUTES_INIT(
_Out_ PWDF_OBJECT_ATTRIBUTES Attributes
)
{
RtlZeroMemory(Attributes, sizeof(WDF_OBJECT_ATTRIBUTES));
Attributes->Size = sizeof(WDF_OBJECT_ATTRIBUTES);
Attributes->ExecutionLevel = WdfExecutionLevelInheritFromParent;
Attributes->SynchronizationScope = WdfSynchronizationScopeInheritFromParent;
}
#define WDF_OBJECT_ATTRIBUTES_SET_CONTEXT_TYPE(_attributes, _contexttype) \
(_attributes)->ContextTypeInfo = WDF_GET_CONTEXT_TYPE_INFO(_contexttype)->UniqueType
//
// VOID
// FORCEINLINE
// WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(
// PWDF_OBJECT_ATTRIBUTES Attributes,
// <typename>
// )
//
// NOTE: Do not put a ; at the end of the last line. This will require the
// caller to specify a ; after the call.
//
#define WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(_attributes, _contexttype) \
WDF_OBJECT_ATTRIBUTES_INIT(_attributes); \
WDF_OBJECT_ATTRIBUTES_SET_CONTEXT_TYPE(_attributes, _contexttype)
typedef
PCWDF_OBJECT_CONTEXT_TYPE_INFO
(__cdecl *PFN_GET_UNIQUE_CONTEXT_TYPE)(
VOID
);
//
// Since C does not have strong type checking we must invent our own
//
typedef struct _WDF_OBJECT_CONTEXT_TYPE_INFO {
//
// The size of this structure in bytes
//
ULONG Size;
//
// String representation of the context's type name, i.e. "DEVICE_CONTEXT"
//
PCHAR ContextName;
//
// The size of the context in bytes. This will be the size of the context
// associated with the handle unless
// WDF_OBJECT_ATTRIBUTES::ContextSizeOverride is specified.
//
size_t ContextSize;
//
// If NULL, this structure is the unique type identifier for the context
// type. If != NULL, the UniqueType pointer value is the unique type id
// for the context type.
//
PCWDF_OBJECT_CONTEXT_TYPE_INFO UniqueType;
//
// Function pointer to retrieve the context type information structure
// pointer from the provider of the context type. This function is invoked
// by the client driver's entry point by the KMDF stub after all class
// drivers are loaded and before DriverEntry is invoked.
//
PFN_GET_UNIQUE_CONTEXT_TYPE EvtDriverGetUniqueContextType;
} WDF_OBJECT_CONTEXT_TYPE_INFO, *PWDF_OBJECT_CONTEXT_TYPE_INFO;
//
// Converts a type name a unique name in which we can retrieve type specific
// information.
//
#define WDF_TYPE_NAME_TO_TYPE_INFO(_contexttype) \
_WDF_ ## _contexttype ## _TYPE_INFO
//
// Converts a type name a unique name to the structure which will initialize
// it through an external component.
//
#define WDF_TYPE_NAME_TO_EXTERNAL_INIT(_contexttype) \
_WDF_ ## _contexttype ## _EXTERNAL_INIT
#define WDF_TYPE_NAME_TO_EXTERNAL_INIT_FUNCTION(_contexttype) \
_contexttype ## _EXTERNAL_INIT_FUNCTION
//
// Returns an address to the type information representing this typename
//
#define WDF_GET_CONTEXT_TYPE_INFO(_contexttype) \
(&WDF_TYPE_NAME_TO_TYPE_INFO(_contexttype))
//
// Used to help generate our own usable pointer to the type typedef. For instance,
// a call as WDF_TYPE_NAME_POINTER_TYPE(DEVICE_CONTEXT) would generate:
//
// WDF_POINTER_TYPE_DEVICE_CONTEXT
//
// which would be the equivalent of DEVICE_CONTEXT*
//
#define WDF_TYPE_NAME_POINTER_TYPE(_contexttype) \
WDF_POINTER_TYPE_ ## _contexttype
//
// Declares a typename so that in can be associated with a handle. This will
// use the type's name with a _ prepended as the "friendly name" (which results
// in the autogenerated casting function being named WdfObjectGet_<typename>, ie
// WdfObjectGet_DEVICE_CONTEXT. See WDF_DECLARE_CONTEXT_TYPE_WITH_NAME for
// more details on what is generated.
//
#define WDF_DECLARE_CONTEXT_TYPE(_contexttype) \
WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(_contexttype, WdfObjectGet_ ## _contexttype)
//
// WDF_DECLARE_CONTEXT_TYPE_WITH_NAME performs the following 3 tasks
//
// 1) declare a typedef for the context type so that its pointer type can be
// referred to later
// 2) declare and initialize global structure that represents the type
// information for this
// context type
// 3) declare and implement a function named _castingfunction
// which does the proper type conversion.
//
// WDF_DECLARE_TYPE_AND_GLOBALS implements 1 & 2
// WDF_DECLARE_CASTING_FUNCTION implements 3
//
// For instance, the invocation of
// WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(DEVICE_CONTEXT, WdfDeviceGetContext)
// would result in the following being generated:
//
// typedef DEVICE_CONTEXT* WDF_POINTER_TYPE_DEVICE_CONTEXT;
//
// extern const __declspec(selectany) WDF_OBJECT_CONTEXT_TYPE_INFO _WDF_DEVICE_CONTEXT_TYPE_INFO =
// {
// sizeof(WDF_OBJECT_CONTEXT_TYPE_INFO),
// "DEVICE_CONTEXT",
// sizeof(DEVICE_CONTEXT),
// };
//
// WDF_POINTER_TYPE_DEVICE_CONTEXT
// WdfDeviceGetContext(
// WDFOBJECT Handle
// )
// {
// return (WDF_POINTER_TYPE_DEVICE_CONTEXT)
// WdfObjectGetTypedContextWorker(
// Handle,
// (&_WDF_DEVICE_CONTEXT_TYPE_INFO)->UniqueType
// );
// }
//
#define WDF_TYPE_INIT_BASE_SECTION_NAME ".kmdftypeinit"
#define WDF_TYPE_INIT_SECTION_NAME ".kmdftypeinit$b"
//
// .data is the default section that global data would be placed into. We
// cannot just use ".data" in __declspec(allocate()) without first declaring
// it in a #pragma section() even though it is a default section name.
//
#ifndef WDF_TYPE_DEFAULT_SECTION_NAME
#define WDF_TYPE_DEFAULT_SECTION_NAME ".data"
#endif // WDF_TYPE_DEFAULT_SECTION_NAME
#pragma section(WDF_TYPE_INIT_SECTION_NAME, read, write)
#pragma section(WDF_TYPE_DEFAULT_SECTION_NAME)
#define WDF_DECLARE_TYPE_AND_GLOBALS(_contexttype, _UniqueType, _GetUniqueType, _section)\
\
typedef _contexttype* WDF_TYPE_NAME_POINTER_TYPE(_contexttype); \
\
WDF_EXTERN_C \
DECLSPEC_SELECTANY \
const WDF_OBJECT_CONTEXT_TYPE_INFO \
WDF_TYPE_NAME_TO_TYPE_INFO(_contexttype) = \
{ \
sizeof(WDF_OBJECT_CONTEXT_TYPE_INFO), \
#_contexttype, \
sizeof(_contexttype), \
_UniqueType, \
_GetUniqueType, \
}; \
//__declspec(allocate(_section))
#define WDF_DECLARE_CASTING_FUNCTION(_contexttype, _castingfunction) \
\
WDF_EXTERN_C \
__drv_aliasesMem \
FORCEINLINE \
WDF_TYPE_NAME_POINTER_TYPE(_contexttype) \
_castingfunction( \
_In_ WDFOBJECT Handle \
) \
{ \
return (WDF_TYPE_NAME_POINTER_TYPE(_contexttype)) \
WdfObjectGetTypedContextWorker( \
Handle, \
WDF_GET_CONTEXT_TYPE_INFO(_contexttype)->UniqueType \
); \
}
#define WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(_contexttype, _castingfunction) \
\
WDF_DECLARE_TYPE_AND_GLOBALS( \
_contexttype, \
WDF_GET_CONTEXT_TYPE_INFO(_contexttype), \
NULL, \
WDF_TYPE_DEFAULT_SECTION_NAME) \
\
WDF_DECLARE_CASTING_FUNCTION(_contexttype, _castingfunction)
//
// WDF_DECLARE_SHARED_CONTEXT_TYPE_WITH_NAME is the same as
// WDF_DECLARE_CONTEXT_TYPE_WITH_NAME with respect to the types and structures
// that are created and initialized. The casting function is different in that
// it passes the UniqueType to WdfObjectGetTypedContextWorker() instead of the
// global type structure created. It also creates a structure which will contain
// an initialization function which will be invoked before DriverEntry() is
// called.
//
// It is the responsibilty of the component exporting the unique type to define
// and implement the function which will return the unique type. The format of
// the define is:
//
// #define _contexttype ## _EXTERNAL_INIT_FUNCTION
//
// (e.g. #define DEVICE_CONTEXT_EXTERNALINIT_FUNCTION DeviceContextInit()
// for a type of DEVICE_CONTEXT)
//
#define WDF_DECLARE_SHARED_CONTEXT_TYPE_WITH_NAME(_contexttype, _castingfunction) \
\
WDF_DECLARE_TYPE_AND_GLOBALS( \
_contexttype, \
NULL, \
WDF_TYPE_NAME_TO_EXTERNAL_INIT_FUNCTION(_contexttype), \
WDF_TYPE_INIT_SECTION_NAME) \
\
WDF_DECLARE_CASTING_FUNCTION(_contexttype, _castingfunction)
//
// Generic conversion macro from handle to type. This should be used if the
// autogenerated conversion function does not suite the programmers calling style.
//
// The type parameter should be name of the type (e.g. DEVICE_CONTEXT), not the
// name of the pointer to the type (PDEVICE_CONTEXT).
//
// Example call:
//
// WDFDEVICE device;
// PDEVICE_CONTEXT pContext;
//
// pContext = WdfObjectGetTypedContext(device, DEVICE_CONTEXT);
//
//
#define WdfObjectGetTypedContext(handle, type) \
(type*) \
WdfObjectGetTypedContextWorker( \
(WDFOBJECT) handle, \
WDF_GET_CONTEXT_TYPE_INFO(type)->UniqueType \
)
//
// Converts a type name to a unique context name.
//
#define WDF_CUSTOM_TYPE_CONTEXT_NAME(_type) \
WdfCustomType_ ## _type
//
// Converts a type name to a unique function name to retrieve the type info context.
//
#define WDF_GET_CUSTOM_TYPE_FUNCTION_NAME(_type) \
WdfObjectGetCustomType_ ## _type
//
// Converts a type name to a unique function name to add the type info context.
//
#define WDF_ADD_CUSTOM_TYPE_FUNCTION_NAME(_type) \
WdfObjectAddCustomType_ ## _type
//
// Core structure for supporting custom types, see macros below.
//
typedef struct _WDF_CUSTOM_TYPE_CONTEXT {
ULONG Size;
ULONG_PTR Data;
} WDF_CUSTOM_TYPE_CONTEXT, *PWDF_CUSTOM_TYPE_CONTEXT;
//
// Declares a context and a function to handle the specified type.
//
// NOTE: Do not put a ; at the end of the last line. This will require the
// caller to specify a ; after the call.
//
#define WDF_DECLARE_CUSTOM_TYPE(_type) \
\
typedef WDF_CUSTOM_TYPE_CONTEXT WDF_CUSTOM_TYPE_CONTEXT_NAME(_type); \
\
WDF_DECLARE_CONTEXT_TYPE_WITH_NAME( \
WDF_CUSTOM_TYPE_CONTEXT_NAME(_type), \
WDF_GET_CUSTOM_TYPE_FUNCTION_NAME(_type) \
); \
\
WDF_EXTERN_C \
FORCEINLINE \
NTSTATUS \
WDF_ADD_CUSTOM_TYPE_FUNCTION_NAME(_type)( \
_In_ WDFOBJECT Handle, \
_In_opt_ ULONG_PTR Data, \
_In_opt_ PFN_WDF_OBJECT_CONTEXT_CLEANUP EvtCleanupCallback, \
_In_opt_ PFN_WDF_OBJECT_CONTEXT_DESTROY EvtDestroyCallback \
) \
{ \
NTSTATUS status; \
WDF_OBJECT_ATTRIBUTES attributes; \
WDF_CUSTOM_TYPE_CONTEXT_NAME(_type)* typeInfo; \
\
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE( \
&attributes, \
WDF_CUSTOM_TYPE_CONTEXT_NAME(_type)); \
\
attributes.EvtCleanupCallback = EvtCleanupCallback; \
attributes.EvtDestroyCallback = EvtDestroyCallback; \
\
status = WdfObjectAllocateContext(Handle, \
&attributes, \
(PVOID*)&typeInfo); \
if (NT_SUCCESS(status)) { \
typeInfo->Size = sizeof(WDF_CUSTOM_TYPE_CONTEXT_NAME(_type)); \
typeInfo->Data = Data; \
} \
\
return status; \
}
//
// BOOLEAN
// WdfObjectIsCustomType(
// _In_ _handle, // WDFOBJECT handle.
// _In_ _type // Type.
// )
//
// NOTE: Do not put a ; at the end of the last line. This will require the
// caller to specify a ; after the call.
//
#define WdfObjectIsCustomType(_handle, _type) \
(WdfObjectGetTypedContext(_handle, WDF_CUSTOM_TYPE_CONTEXT_NAME(_type)) \
== NULL ? FALSE : TRUE)
//
// NTSTATUS
// WdfObjectAddCustomTypeWithData(
// _In_ _handle, // WDFOBJECT handle.
// _In_ _type, // Type.
// _In_opt_ _data, // Type's data.
// _In_opt_ _cleanup, // EvtCleanupCallback
// _In_opt_ _destroy // EvtDestroyCallback
// )
//
// NOTE: Do not put a ; at the end of the last line. This will require the
// caller to specify a ; after the call.
//
#define WdfObjectAddCustomTypeWithData(_handle, _type, _data, _cleanup, _destroy) \
WDF_ADD_CUSTOM_TYPE_FUNCTION_NAME(_type)(_handle, _data, _cleanup, _destroy)
//
// NTSTATUS
// WdfObjectAddCustomType(
// _In_ _handle, // WDFOBJECT handle.
// _In_ _type // Type.
// )
//
// NOTE: Do not put a ; at the end of the last line. This will require the
// caller to specify a ; after the call.
//
#define WdfObjectAddCustomType(_handle, _type) \
WdfObjectAddCustomTypeWithData(_handle, _type, 0, NULL, NULL)
//
// ULONG_PTR
// WdfObjectGetCustomTypeData(
// _In_ _handle, // WDFOBJECT handle.
// _In_ _type // Type.
// )
//
// NOTE: Do not put a ; at the end of the last line. This will require the
// caller to specify a ; after the call.
//
#define WdfObjectGetCustomTypeData(_handle, _type) \
(WDF_GET_CUSTOM_TYPE_FUNCTION_NAME(_type)(_handle)->Data)
//
// WDF Function: WdfObjectGetTypedContextWorker
//
typedef
WDFAPI
PVOID
(FASTCALL *PFN_WDFOBJECTGETTYPEDCONTEXTWORKER)(
_In_
PWDF_DRIVER_GLOBALS DriverGlobals,
_In_
WDFOBJECT Handle,
_In_
PCWDF_OBJECT_CONTEXT_TYPE_INFO TypeInfo
);
FORCEINLINE
PVOID
WdfObjectGetTypedContextWorker(
_In_
WDFOBJECT Handle,
_In_
PCWDF_OBJECT_CONTEXT_TYPE_INFO TypeInfo
)
{
return ((PFN_WDFOBJECTGETTYPEDCONTEXTWORKER) WdfFunctions[WdfObjectGetTypedContextWorkerTableIndex])(WdfDriverGlobals, Handle, TypeInfo);
}
//
// WDF Function: WdfObjectAllocateContext
//
typedef
WDFAPI
NTSTATUS
(STDCALL *PFN_WDFOBJECTALLOCATECONTEXT)(
_In_
PWDF_DRIVER_GLOBALS DriverGlobals,
_In_
WDFOBJECT Handle,
_In_
PWDF_OBJECT_ATTRIBUTES ContextAttributes,
_Outptr_opt_
PVOID* Context
);
FORCEINLINE
NTSTATUS
WdfObjectAllocateContext(
_In_
WDFOBJECT Handle,
_In_
PWDF_OBJECT_ATTRIBUTES ContextAttributes,
_Outptr_opt_
PVOID* Context
)
{
return ((PFN_WDFOBJECTALLOCATECONTEXT) WdfFunctions[WdfObjectAllocateContextTableIndex])(WdfDriverGlobals, Handle, ContextAttributes, Context);
}
//
// WDF Function: WdfObjectContextGetObject
//
typedef
WDFAPI
WDFOBJECT
(FASTCALL *PFN_WDFOBJECTCONTEXTGETOBJECT)(
_In_
PWDF_DRIVER_GLOBALS DriverGlobals,
_In_
PVOID ContextPointer
);
FORCEINLINE
WDFOBJECT
WdfObjectContextGetObject(
_In_
PVOID ContextPointer
)
{
return ((PFN_WDFOBJECTCONTEXTGETOBJECT) WdfFunctions[WdfObjectContextGetObjectTableIndex])(WdfDriverGlobals, ContextPointer);
}
//
// WDF Function: WdfObjectReferenceActual
//
typedef
WDFAPI
VOID
(STDCALL *PFN_WDFOBJECTREFERENCEACTUAL)(
_In_
PWDF_DRIVER_GLOBALS DriverGlobals,
_In_
WDFOBJECT Handle,
_In_opt_
PVOID Tag,
_In_
LONG Line,
_In_z_
PCHAR File
);
FORCEINLINE
VOID
WdfObjectReferenceActual(
_In_
WDFOBJECT Handle,
_In_opt_
PVOID Tag,
_In_
LONG Line,
_In_z_
PCHAR File
)
{
((PFN_WDFOBJECTREFERENCEACTUAL) WdfFunctions[WdfObjectReferenceActualTableIndex])(WdfDriverGlobals, Handle, Tag, Line, File);
}
//
// WDF Function: WdfObjectDereferenceActual
//
typedef
WDFAPI
VOID
(STDCALL *PFN_WDFOBJECTDEREFERENCEACTUAL)(
_In_
PWDF_DRIVER_GLOBALS DriverGlobals,
_In_
WDFOBJECT Handle,
_In_opt_
PVOID Tag,
_In_
LONG Line,
_In_z_
PCHAR File
);
FORCEINLINE
VOID
WdfObjectDereferenceActual(
_In_
WDFOBJECT Handle,
_In_opt_
PVOID Tag,
_In_
LONG Line,
_In_z_
PCHAR File
)
{
((PFN_WDFOBJECTDEREFERENCEACTUAL) WdfFunctions[WdfObjectDereferenceActualTableIndex])(WdfDriverGlobals, Handle, Tag, Line, File);
}
//
// WDF Function: WdfObjectCreate
//
typedef
_Must_inspect_result_
_IRQL_requires_max_(DISPATCH_LEVEL)
WDFAPI
NTSTATUS
(STDCALL *PFN_WDFOBJECTCREATE)(
_In_
PWDF_DRIVER_GLOBALS DriverGlobals,
_In_opt_
PWDF_OBJECT_ATTRIBUTES Attributes,
_Out_
WDFOBJECT* Object
);
_Must_inspect_result_
_IRQL_requires_max_(DISPATCH_LEVEL)
FORCEINLINE
NTSTATUS
WdfObjectCreate(
_In_opt_
PWDF_OBJECT_ATTRIBUTES Attributes,
_Out_
WDFOBJECT* Object
)
{
return ((PFN_WDFOBJECTCREATE) WdfFunctions[WdfObjectCreateTableIndex])(WdfDriverGlobals, Attributes, Object);
}
//
// WDF Function: WdfObjectDelete
//
typedef
_IRQL_requires_max_(DISPATCH_LEVEL)
WDFAPI
VOID
(STDCALL *PFN_WDFOBJECTDELETE)(
_In_
PWDF_DRIVER_GLOBALS DriverGlobals,
_In_
WDFOBJECT Object
);
_IRQL_requires_max_(DISPATCH_LEVEL)
FORCEINLINE
VOID
WdfObjectDelete(
_In_
WDFOBJECT Object
)
{
((PFN_WDFOBJECTDELETE) WdfFunctions[WdfObjectDeleteTableIndex])(WdfDriverGlobals, Object);
}
//
// WDF Function: WdfObjectQuery
//
typedef
_Must_inspect_result_
_IRQL_requires_max_(DISPATCH_LEVEL)
WDFAPI
NTSTATUS
(STDCALL *PFN_WDFOBJECTQUERY)(
_In_
PWDF_DRIVER_GLOBALS DriverGlobals,
_In_
WDFOBJECT Object,
_In_
CONST GUID* Guid,
_In_
ULONG QueryBufferLength,
_Out_writes_bytes_(QueryBufferLength)
PVOID QueryBuffer
);
_Must_inspect_result_
_IRQL_requires_max_(DISPATCH_LEVEL)
FORCEINLINE
NTSTATUS
WdfObjectQuery(
_In_
WDFOBJECT Object,
_In_
CONST GUID* Guid,
_In_
ULONG QueryBufferLength,
_Out_writes_bytes_(QueryBufferLength)
PVOID QueryBuffer
)
{
return ((PFN_WDFOBJECTQUERY) WdfFunctions[WdfObjectQueryTableIndex])(WdfDriverGlobals, Object, Guid, QueryBufferLength, QueryBuffer);
}
//
// Reference an object
//
// VOID
// WdfObjectReference(
// _In_ WDFOBJECT Handle
// );
//
// VOID
// WdfObjectReferenceWithTag(
// _In_ WDFOBJECT Handle,
// _In_ PVOID Tag
// );
//
#define WdfObjectReference(Handle) \
WdfObjectReferenceWithTag(Handle, NULL)
#define WdfObjectReferenceWithTag(Handle, Tag) \
WdfObjectReferenceActual(Handle, Tag, __LINE__, __FILE__)
//
// Dereference an object. If an object allows for a client explicitly deleting
// it, call WdfObjectDelete. Do not use WdfObjectDereferenceXxx to delete an
// object.
//
// VOID
// WdfObjectDereference(
// _In_ WDFOBJECT Handle
// );
//
// VOID
// WdfObjectDereferenceWithTag(
// _In_ WDFOBJECT Handle
// _In_ PVOID Tag
// );
//
#define WdfObjectDereference(Handle) \
WdfObjectDereferenceWithTag(Handle, NULL)
#define WdfObjectDereferenceWithTag(Handle, Tag) \
WdfObjectDereferenceActual(Handle, Tag, __LINE__, __FILE__)
#endif // (NTDDI_VERSION >= NTDDI_WIN2K)
WDF_EXTERN_C_END
#endif // _WDFOBJECT_H_
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