Just ask OpenBSD to provide a pledge_sig and unveil_sig that simply return a C string where each character is the type of the corresponding argument. E.g., if

Just ask OpenBSD to provide a pledge_sig and unveil_sig that simply return a C string where each character is the type of the corresponding argument. E.g., if pledge_sig returns "ss" you know you're dealing either with the bona fide OpenBSD pledge or an evil demon.