_IO_STACK_LOCATION

Metadatacopy
struct _IO_STACK_LOCATION {
    unsigned char MajorFunction;/* 0x0  1 */
    unsigned char MinorFunction;/* 0x1  1 */
    unsigned char Flags;/* 0x2  1 */
    unsigned char Control;/* 0x3  1 */
    union {
        struct {
            struct _IO_SECURITY_CONTEXT* SecurityContext;/* 0x4  4 */
            unsigned long Options;/* 0x8  4 */
            unsigned short FileAttributes;/* 0xc  2 */
            unsigned short ShareAccess;/* 0xe  2 */
            unsigned long EaLength;/* 0x10  4 */
        } Create;/* 0x4  16 */
        struct {
            struct _IO_SECURITY_CONTEXT* SecurityContext;/* 0x4  4 */
            unsigned long Options;/* 0x8  4 */
            unsigned short Reserved;/* 0xc  2 */
            unsigned short ShareAccess;/* 0xe  2 */
            struct _NAMED_PIPE_CREATE_PARAMETERS* Parameters;/* 0x10  4 */
        } CreatePipe;/* 0x4  16 */
        struct {
            struct _IO_SECURITY_CONTEXT* SecurityContext;/* 0x4  4 */
            unsigned long Options;/* 0x8  4 */
            unsigned short Reserved;/* 0xc  2 */
            unsigned short ShareAccess;/* 0xe  2 */
            struct _MAILSLOT_CREATE_PARAMETERS* Parameters;/* 0x10  4 */
        } CreateMailslot;/* 0x4  16 */
        struct {
            unsigned long Length;/* 0x4  4 */
            unsigned long Key;/* 0x8  4 */
            union _LARGE_INTEGER ByteOffset;/* 0xc  8 */
        } Read;/* 0x4  16 */
        struct {
            unsigned long Length;/* 0x4  4 */
            unsigned long Key;/* 0x8  4 */
            union _LARGE_INTEGER ByteOffset;/* 0xc  8 */
        } Write;/* 0x4  16 */
        struct {
            unsigned long Length;/* 0x4  4 */
            struct _STRING* FileName;/* 0x8  4 */
            int FileInformationClass;/* 0xc  4 */
            unsigned long FileIndex;/* 0x10  4 */
        } QueryDirectory;/* 0x4  16 */
        struct {
            unsigned long Length;/* 0x4  4 */
            unsigned long CompletionFilter;/* 0x8  4 */
        } NotifyDirectory;/* 0x4  8 */
        struct {
            unsigned long Length;/* 0x4  4 */
            int FileInformationClass;/* 0x8  4 */
        } QueryFile;/* 0x4  8 */
        struct {
            unsigned long Length;/* 0x4  4 */
            int FileInformationClass;/* 0x8  4 */
            struct _FILE_OBJECT* FileObject;/* 0xc  4 */
            union {
                struct {
                    unsigned char ReplaceIfExists;/* 0x10  1 */
                    unsigned char AdvanceOnly;/* 0x11  1 */
                };/* 0x10  2 */
                unsigned long ClusterCount;/* 0x10  4 */
                void* DeleteHandle;/* 0x10  4 */
            };/* 0x10  4 */
        } SetFile;/* 0x4  16 */
        struct {
            unsigned long Length;/* 0x4  4 */
            void* EaList;/* 0x8  4 */
            unsigned long EaListLength;/* 0xc  4 */
            unsigned long EaIndex;/* 0x10  4 */
        } QueryEa;/* 0x4  16 */
        struct {
            unsigned long Length;/* 0x4  4 */
        } SetEa;/* 0x4  4 */
        struct {
            unsigned long Length;/* 0x4  4 */
            int FsInformationClass;/* 0x8  4 */
        } QueryVolume;/* 0x4  8 */
        struct {
            unsigned long Length;/* 0x4  4 */
            int FsInformationClass;/* 0x8  4 */
        } SetVolume;/* 0x4  8 */
        struct {
            unsigned long OutputBufferLength;/* 0x4  4 */
            unsigned long InputBufferLength;/* 0x8  4 */
            unsigned long FsControlCode;/* 0xc  4 */
            void* Type3InputBuffer;/* 0x10  4 */
        } FileSystemControl;/* 0x4  16 */
        struct {
            union _LARGE_INTEGER* Length;/* 0x4  4 */
            unsigned long Key;/* 0x8  4 */
            union _LARGE_INTEGER ByteOffset;/* 0xc  8 */
        } LockControl;/* 0x4  16 */
        struct {
            unsigned long OutputBufferLength;/* 0x4  4 */
            unsigned long InputBufferLength;/* 0x8  4 */
            unsigned long IoControlCode;/* 0xc  4 */
            void* Type3InputBuffer;/* 0x10  4 */
        } DeviceIoControl;/* 0x4  16 */
        struct {
            unsigned long SecurityInformation;/* 0x4  4 */
            unsigned long Length;/* 0x8  4 */
        } QuerySecurity;/* 0x4  8 */
        struct {
            unsigned long SecurityInformation;/* 0x4  4 */
            void* SecurityDescriptor;/* 0x8  4 */
        } SetSecurity;/* 0x4  8 */
        struct {
            struct _VPB* Vpb;/* 0x4  4 */
            struct _DEVICE_OBJECT* DeviceObject;/* 0x8  4 */
        } MountVolume;/* 0x4  8 */
        struct {
            struct _VPB* Vpb;/* 0x4  4 */
            struct _DEVICE_OBJECT* DeviceObject;/* 0x8  4 */
        } VerifyVolume;/* 0x4  8 */
        struct {
            struct _SCSI_REQUEST_BLOCK* Srb;/* 0x4  4 */
        } Scsi;/* 0x4  4 */
        struct {
            struct _CM_RESOURCE_LIST* AllocatedResources;/* 0x4  4 */
        } StartDevice;/* 0x4  4 */
        struct {
            void* Argument1;/* 0x4  4 */
            void* Argument2;/* 0x8  4 */
            void* Argument3;/* 0xc  4 */
            void* Argument4;/* 0x10  4 */
        } Others;/* 0x4  16 */
    } Parameters;/* 0x4  16 */
    struct _DEVICE_OBJECT* DeviceObject;/* 0x14  4 */
    struct _FILE_OBJECT* FileObject;/* 0x18  4 */
    long (*CompletionRoutine)(struct _DEVICE_OBJECT*, struct _IRP*, void*);/* 0x1c  4 */
    void* Context;/* 0x20  4 */
};
/* source: NT 4.0 DDK (August 1996) PPC LIBCNTPR.LIB CodeView type records; _EPROCESS/_ETHREAD offsets match KDEXTPPC.DLL (NT 4.0 Server CD) */