The SHARE_INFO_1501_I structure contains a security descriptor in self-relative format and a DWORD that contains its length.<16> For a description of the fields in this structure, see the description for the SHARE_INFO_502_I (section 2.2.4.26) structure (shi1501_xxx denotes the same information as shi502_xxx).

 typedef struct _SHARE_INFO_1501_I {
   DWORD shi1501_reserved;
   [size_is(shi1501_reserved)] unsigned char* shi1501_security_descriptor;
 } SHARE_INFO_1501_I,
  *PSHARE_INFO_1501_I,
  *LPSHARE_INFO_1501_I;