GetSidLengthRequired

The GetSidLengthRequired function returns the length, in bytes, of the buffer required to store a SID structure with a specified number of subauthorities.

DWORD GetSidLengthRequired(
  UCHAR nSubAuthorityCount   // count of subauthorities
);
 

Parameters

nSubAuthorityCount

Specifies the number of subauthorities to be stored in the SID structure.

Return Values

The return value is the length, in bytes, of the buffer required to store the SID structure. This function cannot fail.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Unsupported.
  Windows CE: Unsupported.
  Header: Declared in winbase.h.
  Import Library: Use advapi32.lib.

See Also

Access Control Overview, Access Control Functions, AllocateAndInitializeSid, GetLengthSid, GetSidIdentifierAuthority, GetSidSubAuthority, GetSidSubAuthorityCount, InitializeSid, IsValidSid, SID