| err = ESUCCESS, n = of[fd].pos + n0, whence = SEEK_CUR, dom of < ino, afs-cons(dirs, files), of-cons(of, dirs, files), fd ∈ of ⊦ ⟪if err = ESUCCESS then of[fd].pos := n⟫ (of-cons(of, dirs, files) ∧ dom of < ino) |
err = ESUCCESS, n = of[fd].pos + n0, whence = SEEK_CUR, dom of < ino, afs-cons(dirs, files), of-cons(of, dirs, files), fd ∈ of ⊦ ⟪of[fd].pos := n⟫ (of-cons(of, dirs, files) ∧ dom of < ino)