| isdir0 ↔ isdir, isdir ↔ true, isdir1 ↔ true, dent = negdentry(str), err = err0, dom of < ino0, afs-cons(dirs, files), ispath(q, ROOT_INO, ino1, dirs, files), of-cons(of, dirs, files), px-parent(user, q, ROOT_INO, dirs, files), ⌊err0⌋ , ino1 ∈ dirs ∨ ino1 ∈ files ⊦ ⟪skip⟫ (of-cons(of, dirs, files) ∧ afs-cons(dirs, files)) |