cmfuncs.h File Reference

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Functions
	$if (_WDMDDK_) _IRQL_requires_max_(APC_LEVEL) NTKERNELAPI NTSTATUS NTAPI CmRegisterCallback(_In_ PEX_CALLBACK_FUNCTION Function
	_IRQL_requires_max_ (APC_LEVEL) NTKERNELAPI NTSTATUS NTAPI CmUnRegisterCallback(_In_ LARGE_INTEGER Cookie)

Variables
_In_opt_ PVOID	Context
_In_opt_ PVOID _Out_ PLARGE_INTEGER	Cookie
_In_ PCUNICODE_STRING	Altitude
_In_ PCUNICODE_STRING _In_ PVOID	Driver
_In_ PCUNICODE_STRING _In_ PVOID _In_opt_ PVOID _Out_ PLARGE_INTEGER _Reserved_ PVOID	Reserved
_Out_opt_ PULONG	Minor
_In_ PLARGE_INTEGER _In_ PVOID	NewContext
_In_ PLARGE_INTEGER _In_ PVOID _Out_opt_ PVOID *	OldContext
_In_ PVOID	Object
_In_ PVOID _Out_opt_ PULONG_PTR	ObjectID
_In_ PVOID _Out_opt_ PULONG_PTR _Outptr_opt_ PCUNICODE_STRING *	ObjectName

Function Documentation

$if()

$if

(

_WDMDDK_

)

Kernel definitions for AMD64

Kernel definitions for ARM

Definition at line 1 of file ke.h.

{
    ULONG Dummy;
} KFLOATING_SAVE, *PKFLOATING_SAVE;

_IRQL_requires_max_()

_IRQL_requires_max_

(

APC_LEVEL

)

Definition at line 197 of file cddata.c.

{
    THREAD_CONTEXT ThreadContext = {0};
    PIRP_CONTEXT IrpContext = NULL;
    BOOLEAN Wait;

#ifdef CD_SANITY
    PVOID PreviousTopLevel;
#endif

    NTSTATUS Status;

#if DBG

    KIRQL SaveIrql = KeGetCurrentIrql();

#endif

    ASSERT_OPTIONAL_IRP( Irp );

    UNREFERENCED_PARAMETER( DeviceObject );

    FsRtlEnterFileSystem();

#ifdef CD_SANITY
    PreviousTopLevel = IoGetTopLevelIrp();
#endif

    //
    //  Loop until this request has been completed or posted.
    //

    do {

        //
        //  Use a try-except to handle the exception cases.
        //

        _SEH2_TRY {

            //
            //  If the IrpContext is NULL then this is the first pass through
            //  this loop.
            //

            if (IrpContext == NULL) {

                //
                //  Decide if this request is waitable an allocate the IrpContext.
                //  If the file object in the stack location is NULL then this
                //  is a mount which is always waitable.  Otherwise we look at
                //  the file object flags.
                //

                if (IoGetCurrentIrpStackLocation( Irp )->FileObject == NULL) {

                    Wait = TRUE;

                } else {

                    Wait = CanFsdWait( Irp );
                }

                IrpContext = CdCreateIrpContext( Irp, Wait );

                //
                //  Update the thread context information.
                //

                CdSetThreadContext( IrpContext, &ThreadContext );

#ifdef CD_SANITY
                NT_ASSERT( !CdTestTopLevel ||
                        SafeNodeType( IrpContext->TopLevel ) == CDFS_NTC_IRP_CONTEXT );
#endif

            //
            //  Otherwise cleanup the IrpContext for the retry.
            //

            } else {

                //
                //  Set the MORE_PROCESSING flag to make sure the IrpContext
                //  isn't inadvertently deleted here.  Then cleanup the
                //  IrpContext to perform the retry.
                //

                SetFlag( IrpContext->Flags, IRP_CONTEXT_FLAG_MORE_PROCESSING );
                CdCleanupIrpContext( IrpContext, FALSE );
            }

            //
            //  Case on the major irp code.
            //

            switch (IrpContext->MajorFunction) {

            case IRP_MJ_CREATE :

                Status = CdCommonCreate( IrpContext, Irp );
                break;

            case IRP_MJ_CLOSE :

                Status = CdCommonClose( IrpContext, Irp );
                break;

            case IRP_MJ_READ :

                //
                //  If this is an Mdl complete request, don't go through
                //  common read.
                //

                if (FlagOn( IrpContext->MinorFunction, IRP_MN_COMPLETE )) {

                    Status = CdCompleteMdl( IrpContext, Irp );

                } else {

                    Status = CdCommonRead( IrpContext, Irp );
                }

                break;

            case IRP_MJ_WRITE :

                Status = CdCommonWrite( IrpContext, Irp );
                break;

            case IRP_MJ_QUERY_INFORMATION :

                Status = CdCommonQueryInfo( IrpContext, Irp );
                break;

            case IRP_MJ_SET_INFORMATION :

                Status = CdCommonSetInfo( IrpContext, Irp );
                break;

            case IRP_MJ_QUERY_VOLUME_INFORMATION :

                Status = CdCommonQueryVolInfo( IrpContext, Irp );
                break;

            case IRP_MJ_DIRECTORY_CONTROL :

                Status = CdCommonDirControl( IrpContext, Irp );
                break;

            case IRP_MJ_FILE_SYSTEM_CONTROL :

                Status = CdCommonFsControl( IrpContext, Irp );
                break;

            case IRP_MJ_DEVICE_CONTROL :

                Status = CdCommonDevControl( IrpContext, Irp );
                break;

            case IRP_MJ_LOCK_CONTROL :

                Status = CdCommonLockControl( IrpContext, Irp );
                break;

            case IRP_MJ_CLEANUP :

                Status = CdCommonCleanup( IrpContext, Irp );
                break;

            case IRP_MJ_PNP :

                Status = CdCommonPnp( IrpContext, Irp );
                break;

            case IRP_MJ_SHUTDOWN :
            
                Status = CdCommonShutdown( IrpContext, Irp );
                break;

            default :

                Status = STATUS_INVALID_DEVICE_REQUEST;
                CdCompleteRequest( IrpContext, Irp, Status );
            }

        } _SEH2_EXCEPT( CdExceptionFilter( IrpContext, _SEH2_GetExceptionInformation() )) {

            Status = CdProcessException( IrpContext, Irp, _SEH2_GetExceptionCode() );
        } _SEH2_END;

    } while (Status == STATUS_CANT_WAIT);

#ifdef CD_SANITY
    NT_ASSERT( !CdTestTopLevel ||
            (PreviousTopLevel == IoGetTopLevelIrp()) );
#endif

    FsRtlExitFileSystem();

    NT_ASSERT( SaveIrql == KeGetCurrentIrql( ));

    return Status;
}

Variable Documentation

Altitude

_In_ PCUNICODE_STRING Altitude

Definition at line 32 of file cmfuncs.h.

Context

_In_ PCUNICODE_STRING _In_ PVOID _In_opt_ PVOID Context

Definition at line 13 of file cmfuncs.h.

Cookie

_In_ PLARGE_INTEGER Cookie

Definition at line 13 of file cmfuncs.h.

Referenced by BasepGetModuleHandleExW(), CmRegisterCallback(), CmUnRegisterCallback(), CreateRemoteThread(), GetModuleFileNameW(), LdrAddRefDll(), LdrDisableThreadCalloutsForDll(), LdrEnumerateLoadedModules(), LdrGetDllHandleEx(), LdrLoadDll(), LdrLockLoaderLock(), LdrpFetchAddressOfSecurityCookie(), LdrpInitSecurityCookie(), LdrUnloadAlternateResourceModule(), LdrUnlockLoaderLock(), NtQueryInformationProcess(), RtlEncodePointer(), and test_IInitializeSpy_twice().

Driver

_In_ PCUNICODE_STRING _In_ PVOID Driver

Definition at line 32 of file cmfuncs.h.

Minor

_Out_opt_ PULONG Minor

Definition at line 44 of file cmfuncs.h.

Referenced by GetVersionInformationFromInfFile(), HalpDispatchPnp(), IsOsVersionGreaterThanOrEqualTo(), _FX_DRIVER_GLOBALS::IsVerificationEnabled(), _FX_DRIVER_GLOBALS::IsVersionGreaterThanOrEqualTo(), QueryAvailableFileSystemFormat(), RamdiskPnp(), TreeView_Set3StateCheck(), USBH_FdoPnP(), USBH_FdoPower(), USBH_PdoPnP(), USBH_PdoPower(), USBPORT_FdoPnP(), USBPORT_PdoPnP(), VgaInterpretCmdStream(), WdmlibRtlIsNtDdiVersionAvailable(), and WsProcSetVersion().

NewContext

_In_ PLARGE_INTEGER _In_ PVOID NewContext

Definition at line 52 of file cmfuncs.h.

Object

_In_ PVOID Object

Definition at line 62 of file cmfuncs.h.

ObjectID

_In_ PVOID _Out_opt_ PULONG_PTR ObjectID

Definition at line 62 of file cmfuncs.h.

ObjectName

_In_ PVOID _Out_opt_ PULONG_PTR _Outptr_opt_ PCUNICODE_STRING* ObjectName

Definition at line 62 of file cmfuncs.h.

Referenced by AccessCheckAndAuditAlarmA(), AccessCheckAndAuditAlarmW(), AcpiUtEvaluateNumericObject(), BaseFormatObjectAttributes(), CmpGetSymbolicLink(), DriverEntry(), FltpGetBaseDeviceObjectName(), FltpGetObjectName(), IntResolveDesktop(), IoGetDeviceObjectPointer(), IopGetDeviceObjectPointer(), IopStartRamdisk(), IopUnloadDriver(), KsiCreateObjectType(), LpcpCreatePort(), LsapCreateDbObject(), LsapOpenDbObject(), NpCreatePipeEx(), NpOpenPipeEx(), NtAccessCheckAndAuditAlarm(), NtAccessCheckByTypeAndAuditAlarm(), NtAccessCheckByTypeResultListAndAuditAlarm(), NtAccessCheckByTypeResultListAndAuditAlarmByHandle(), NtOpenObjectAuditAlarm(), NtUnloadKey2(), ObCreateObject(), ObCreateObjectType(), ObInsertObject(), ObjectOpenAuditAlarmA(), ObjectOpenAuditAlarmW(), ObOpenObjectByName(), ObpAllocateObject(), ObpAllocateObjectNameBuffer(), ObpCaptureObjectCreateInformation(), ObpCaptureObjectName(), ObpIsUnsecureName(), ObpLookupObjectName(), ObQueryNameString(), ObReferenceObjectByName(), ProbeAndCaptureObjectAttributes(), SampCreateDbObject(), SampOpenDbObject(), ScmCreateOrReferenceServiceImage(), SepAccessCheckAndAuditAlarm(), SepOpenObjectAuditAlarm(), SetNamedSecurityInfoA(), and TreeResetNamedSecurityInfoA().

OldContext

_In_ PLARGE_INTEGER _In_ PVOID _Out_opt_ PVOID* OldContext

Definition at line 52 of file cmfuncs.h.

Reserved

_In_ PCUNICODE_STRING _In_ PVOID _In_opt_ PVOID _Out_ PLARGE_INTEGER _Reserved_ PVOID Reserved

Definition at line 32 of file cmfuncs.h.