_ACCESS_ALLOWED_ACE

headersMetadatacopy
struct _ACCESS_ALLOWED_ACE {
    struct _ACE_HEADER Header;/* 0x0  4 */
    unsigned long Mask;/* 0x4  4 */
    unsigned long SidStart;/* 0x8  4 */
};
/* computed from WINNT.H, NT 4.0 SDK */