struct _IO_STACK_LOCATION { unsigned char MajorFunction;/* 0x0 1 */ unsigned char MinorFunction;/* 0x1 1 */ unsigned char Flags;/* 0x2 1 */ unsigned char Control;/* 0x3 1 */ /* 4 bytes padding */ union { struct { struct _IO_SECURITY_CONTEXT* SecurityContext;/* 0x8 4 */ unsigned long Options;/* 0xc 4 */ unsigned short FileAttributes;/* 0x10 2 */ unsigned short ShareAccess;/* 0x12 2 */ unsigned long EaLength;/* 0x14 4 */ } Create;/* 0x8 16 */ struct { struct _IO_SECURITY_CONTEXT* SecurityContext;/* 0x8 4 */ unsigned long Options;/* 0xc 4 */ unsigned short Reserved;/* 0x10 2 */ unsigned short ShareAccess;/* 0x12 2 */ struct _NAMED_PIPE_CREATE_PARAMETERS* Parameters;/* 0x14 4 */ } CreatePipe;/* 0x8 16 */ struct { struct _IO_SECURITY_CONTEXT* SecurityContext;/* 0x8 4 */ unsigned long Options;/* 0xc 4 */ unsigned short Reserved;/* 0x10 2 */ unsigned short ShareAccess;/* 0x12 2 */ struct _MAILSLOT_CREATE_PARAMETERS* Parameters;/* 0x14 4 */ } CreateMailslot;/* 0x8 16 */ struct { unsigned long Length;/* 0x8 4 */ unsigned long Key;/* 0xc 4 */ union _LARGE_INTEGER ByteOffset;/* 0x10 8 */ } Read;/* 0x8 16 */ struct { unsigned long Length;/* 0x8 4 */ unsigned long Key;/* 0xc 4 */ union _LARGE_INTEGER ByteOffset;/* 0x10 8 */ } Write;/* 0x8 16 */ struct { unsigned long Length;/* 0x8 4 */ struct _STRING* FileName;/* 0xc 4 */ int FileInformationClass;/* 0x10 4 */ unsigned long FileIndex;/* 0x14 4 */ } QueryDirectory;/* 0x8 16 */ struct { unsigned long Length;/* 0x8 4 */ unsigned long CompletionFilter;/* 0xc 4 */ } NotifyDirectory;/* 0x8 8 */ struct { unsigned long Length;/* 0x8 4 */ int FileInformationClass;/* 0xc 4 */ } QueryFile;/* 0x8 8 */ struct { unsigned long Length;/* 0x8 4 */ int FileInformationClass;/* 0xc 4 */ struct _FILE_OBJECT* FileObject;/* 0x10 4 */ union { struct { unsigned char ReplaceIfExists;/* 0x14 1 */ unsigned char AdvanceOnly;/* 0x15 1 */ };/* 0x14 2 */ unsigned long ClusterCount;/* 0x14 4 */ void* DeleteHandle;/* 0x14 4 */ };/* 0x14 4 */ } SetFile;/* 0x8 16 */ struct { unsigned long Length;/* 0x8 4 */ void* EaList;/* 0xc 4 */ unsigned long EaListLength;/* 0x10 4 */ unsigned long EaIndex;/* 0x14 4 */ } QueryEa;/* 0x8 16 */ struct { unsigned long Length;/* 0x8 4 */ } SetEa;/* 0x8 4 */ struct { unsigned long Length;/* 0x8 4 */ int FsInformationClass;/* 0xc 4 */ } QueryVolume;/* 0x8 8 */ struct { unsigned long Length;/* 0x8 4 */ int FsInformationClass;/* 0xc 4 */ } SetVolume;/* 0x8 8 */ struct { unsigned long OutputBufferLength;/* 0x8 4 */ unsigned long InputBufferLength;/* 0xc 4 */ unsigned long FsControlCode;/* 0x10 4 */ void* Type3InputBuffer;/* 0x14 4 */ } FileSystemControl;/* 0x8 16 */ struct { union _LARGE_INTEGER* Length;/* 0x8 4 */ unsigned long Key;/* 0xc 4 */ union _LARGE_INTEGER ByteOffset;/* 0x10 8 */ } LockControl;/* 0x8 16 */ struct { unsigned long OutputBufferLength;/* 0x8 4 */ unsigned long InputBufferLength;/* 0xc 4 */ unsigned long IoControlCode;/* 0x10 4 */ void* Type3InputBuffer;/* 0x14 4 */ } DeviceIoControl;/* 0x8 16 */ struct { unsigned long SecurityInformation;/* 0x8 4 */ unsigned long Length;/* 0xc 4 */ } QuerySecurity;/* 0x8 8 */ struct { unsigned long SecurityInformation;/* 0x8 4 */ void* SecurityDescriptor;/* 0xc 4 */ } SetSecurity;/* 0x8 8 */ struct { struct _VPB* Vpb;/* 0x8 4 */ struct _DEVICE_OBJECT* DeviceObject;/* 0xc 4 */ } MountVolume;/* 0x8 8 */ struct { struct _VPB* Vpb;/* 0x8 4 */ struct _DEVICE_OBJECT* DeviceObject;/* 0xc 4 */ } VerifyVolume;/* 0x8 8 */ struct { struct _SCSI_REQUEST_BLOCK* Srb;/* 0x8 4 */ } Scsi;/* 0x8 4 */ struct { unsigned long Length;/* 0x8 4 */ void* StartSid;/* 0xc 4 */ struct _FILE_GET_QUOTA_INFORMATION* SidList;/* 0x10 4 */ unsigned long SidListLength;/* 0x14 4 */ } QueryQuota;/* 0x8 16 */ struct { unsigned long Length;/* 0x8 4 */ } SetQuota;/* 0x8 4 */ struct { int Type;/* 0x8 4 */ } QueryDeviceRelations;/* 0x8 4 */ struct { const struct _GUID* InterfaceType;/* 0x8 4 */ unsigned short Size;/* 0xc 2 */ unsigned short Version;/* 0xe 2 */ struct _INTERFACE* Interface;/* 0x10 4 */ void* InterfaceSpecificData;/* 0x14 4 */ } QueryInterface;/* 0x8 16 */ struct { struct _DEVICE_CAPABILITIES* Capabilities;/* 0x8 4 */ } DeviceCapabilities;/* 0x8 4 */ struct { struct _IO_RESOURCE_REQUIREMENTS_LIST* IoResourceRequirementList;/* 0x8 4 */ } FilterResourceRequirements;/* 0x8 4 */ struct { unsigned long WhichSpace;/* 0x8 4 */ void* Buffer;/* 0xc 4 */ unsigned long Offset;/* 0x10 4 */ unsigned long Length;/* 0x14 4 */ } ReadWriteConfig;/* 0x8 16 */ struct { unsigned char Lock;/* 0x8 1 */ } SetLock;/* 0x8 1 */ struct { int IdType;/* 0x8 4 */ } QueryId;/* 0x8 4 */ struct { int DeviceTextType;/* 0x8 4 */ unsigned long LocaleId;/* 0xc 4 */ } QueryDeviceText;/* 0x8 8 */ struct { unsigned char InPath;/* 0x8 1 */ unsigned char Reserved[3];/* 0x9 3 */ int Type;/* 0xc 4 */ } UsageNotification;/* 0x8 8 */ struct { int PowerState;/* 0x8 4 */ } WaitWake;/* 0x8 4 */ struct { struct _POWER_SEQUENCE* PowerSequence;/* 0x8 4 */ } PowerSequence;/* 0x8 4 */ struct { unsigned long SystemContext;/* 0x8 4 */ int Type;/* 0xc 4 */ union _POWER_STATE State;/* 0x10 4 */ int ShutdownType;/* 0x14 4 */ } Power;/* 0x8 16 */ struct { struct _CM_RESOURCE_LIST* AllocatedResources;/* 0x8 4 */ struct _CM_RESOURCE_LIST* AllocatedResourcesTranslated;/* 0xc 4 */ } StartDevice;/* 0x8 8 */ struct { unsigned long ProviderId;/* 0x8 4 */ void* DataPath;/* 0xc 4 */ unsigned long BufferSize;/* 0x10 4 */ void* Buffer;/* 0x14 4 */ } WMI;/* 0x8 16 */ struct { void* Argument1;/* 0x8 4 */ void* Argument2;/* 0xc 4 */ void* Argument3;/* 0x10 4 */ void* Argument4;/* 0x14 4 */ } Others;/* 0x8 16 */ } Parameters;/* 0x8 16 */ struct _DEVICE_OBJECT* DeviceObject;/* 0x18 4 */ struct _FILE_OBJECT* FileObject;/* 0x1c 4 */ long (*CompletionRoutine)(struct _DEVICE_OBJECT*, struct _IRP*, void*);/* 0x20 4 */ void* Context;/* 0x24 4 */};/* source: Windows 2000 RC2 DDK Alpha libcntpr.lib CodeView type records; build 2128 per the DDK's ntverp.h */size 40 (0x28)9 members1 hole (4 bytes)padding 01 cacheline
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