| files[ino0] = mkfile(m, md, # links(ino0, dirs), content), err = err0, err1 = ESUCCESS, afs-cons(dirs, files), ispath(p, ROOT_INO, ino0, dirs, files), of-cons(of, dirs, files), pw(user, md), px-parent(user, p, ROOT_INO, dirs, files), ino0 ∈ files, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ino0 ∈ dirs, ∃ bv. true |