FindFirstFreeAce

The FindFirstFreeAce function retrieves a pointer to the first free byte in an access-control list (ACL).

BOOL FindFirstFreeAce(
  PACL pAcl,     // access-control list
  LPVOID *pAce   // first free byte
);

Parameters

pAcl

[in] Pointer to an ACL structure.

pAce

[out] Pointer to a pointer to the first free position in the ACL created when the function returns. If the ACL is invalid, this parameter is NULL. If the ACL is full, this parameter points to the byte immediately following the ACL.

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Requirements

  Windows NT/2000: Requires Windows NT 3.1 or later.
  Header: Declared in Winbase.h; include Windows.h.
  Library: Use Advapi32.lib.

See Also

Low-Level Access-Control Overview, Low-Level Access Control Functions, ACL, GetAce, GetAclInformation