acl_strip
err = acl_strip(file, owner, group, (mode_t)mode);
error = acl_strip(file, st->st_uid, st->st_gid, st->st_mode);
(void) acl_strip(dev, uid, gid, mode);
err = acl_strip(dev, uid, gid, mode);
extern int acl_strip(const char *, uid_t, gid_t, mode_t);