GetSidSubAuthorityCount function

The GetSidSubAuthorityCount function returns a pointer to the member in a security identifier (SID) structure that contains the subauthority count.

Syntax

PUCHAR GetSidSubAuthorityCount(
  PSID pSid
);

Parameters

pSid

A pointer to the SID structure from which a pointer to the subauthority count is returned.

This function does not handle SID structures that are not valid. Call the IsValidSid function to verify that the SID structure is valid before you call this function.

Return Value

If the function succeeds, the return value is a pointer to the subauthority count for the specified SID structure.

If the function fails, the return value is undefined. The function fails if the specified SID structure is not valid. To get extended error information, call GetLastError.

Remarks

The SID structure specified in pSid uses a 32-bit value. For applications that require longer RID values, use CreateWellKnownSid and related functions.

Requirements

   
Minimum supported client Windows XP [desktop apps | UWP apps]
Minimum supported server Windows Server 2003 [desktop apps | UWP apps]
Target Platform Windows
Header securitybaseapi.h (include Windows.h)
Library Advapi32.lib
DLL Advapi32.dll

See Also

Access Control Overview

Basic Access Control Functions

CreateWellKnownSid

GetLengthSid

GetSidIdentifierAuthority

GetSidLengthRequired

GetSidSubAuthority

IsValidSid

SID