The following macro is supplied to calculate the size of a sec_attr_alc_mgr_info_set_t data type.
/*
* SA_ACL_MGR_SET_SIZE(N) - calculate the size required
* for a sec_attr_acl_mgr_info_set_t with N acl_mgrs.
*/
#define SA_ACL_MGR_SET_SIZE(N) ( sizeof(sec_attr_acl_mgr_info_set_t) + \
(((N) - 1) * sizeof(sec_attr_acl_mgr_info_p_t)) )