ACL storage management

There are several functions that manage the memory associated with ACLs.

Allocate and initialize an ACL working storage area. The argument to this function is the number of entries that you want in the list (although acl_init() might allocate more). It returns an acl_t pointer.
Duplicate a access control list in working storage. You pass it an acl_t pointer, and it returns a pointer to the copy of the list.
Free the working storage area allocated for an access control list (ACL) data object. You should use this function to free the memory allocated by the other acl_*() functions.