struct _IO_SECURITY_CONTEXT// Size=0x10
{
    struct _SECURITY_QUALITY_OF_SERVICE * SecurityQos;// Offset=0x0 Size=0x4
    struct _ACCESS_STATE * AccessState;// Offset=0x4 Size=0x4
    unsigned long DesiredAccess;// Offset=0x8 Size=0x4
    unsigned long FullCreateOptions;// Offset=0xc Size=0x4
};