GetAclInformation function (securitybaseapi.h)

The GetAclInformation function retrieves information about an access control list (ACL).


BOOL GetAclInformation(
  [in]  PACL                  pAcl,
  [out] LPVOID                pAclInformation,
  [in]  DWORD                 nAclInformationLength,
  [in]  ACL_INFORMATION_CLASS dwAclInformationClass


[in] pAcl

A pointer to an ACL. The function retrieves information about this ACL. If a null value is passed, the function causes an access violation.

[out] pAclInformation

A pointer to a buffer to receive the requested information. The structure that is placed into the buffer depends on the information class requested in the dwAclInformationClass parameter.

[in] nAclInformationLength

The size, in bytes, of the buffer pointed to by the pAclInformation parameter.

[in] dwAclInformationClass

A value of the ACL_INFORMATION_CLASS enumeration that indicates the class of information requested. This parameter can be one of two values from this enumeration:

  • If the value is AclRevisionInformation, the function fills the buffer pointed to by the pAclInformation parameter with an ACL_REVISION_INFORMATION structure.
  • If the value is AclSizeInformation, the function fills the buffer pointed to by the pAclInformation parameter with an ACL_SIZE_INFORMATION structure.

Return value

If the function succeeds, the function returns nonzero.

If the function fails, it returns zero. To get extended error information, call GetLastError.


Requirement Value
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







Low-level Access Control

Low-level Access Control Functions