MMPFN_IDENTITY - NtDoc

#ifndef _NTMMAPI_H

// private
typedef struct _MMPFN_IDENTITY
{
    union
    {
        MEMORY_FRAME_INFORMATION e1; // all
        FILEOFFSET_INFORMATION e2; // mapped files
        PAGEDIR_INFORMATION e3; // private pages
        UNIQUE_PROCESS_INFORMATION e4; // owning process
    } u1;
    ULONG_PTR PageFrameIndex; // all
    union
    {
        struct
        {
            ULONG_PTR Image : 1;
            ULONG_PTR Mismatch : 1;
        } e1;
        struct
        {
            ULONG_PTR CombinedPage;
        } e2;
        ULONG_PTR FileObject; // mapped files
        ULONG_PTR UniqueFileObjectKey;
        ULONG_PTR ProtoPteAddress;
        ULONG_PTR VirtualAddress;  // everything else
    } u2;
} MMPFN_IDENTITY, *PMMPFN_IDENTITY;

#endif
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