struct SECURITY_DESCRIPTOR_RELATIVE

typedef struct _SECURITY_DESCRIPTOR_RELATIVE
{
     UCHAR Revision;
     UCHAR Sbz1;
     WORD Control;
     ULONG Owner;
     ULONG Group;
     ULONG Sacl;
     ULONG Dacl;
} SECURITY_DESCRIPTOR_RELATIVE, *PSECURITY_DESCRIPTOR_RELATIVE;

Windows Vista Kernel Structures