| VFS_PAGE_SIZE = n1 + m5 % VFS_PAGE_SIZE, files[m] = mkfile(m1, md, # links(m, dirs), content), files1[m] = mkfile(m5, md0, # links(m, dirs), content0), of[fd] = mkfile(m, mode, m0), err = err0, m5 < m0 + ino, afs-cons(dirs, files1), afs-cons (dirs, files1 [m, mkfile(m5, md0, # links(m, dirs), content0[m5 / VFS_PAGE_SIZE, fill(content0[m5 / VFS_PAGE_SIZE], zero, m5 % VFS_PAGE_SIZE, n1)] upto m5) ]), of-cons(of, dirs, files1), m ∈ files, fd ∈ of, m5 / VFS_PAGE_SIZE ∈ content0, m ∈ files1, n ≤ # buf0, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ m5 % VFS_PAGE_SIZE = 0, ino = 0, n = 0, ∃ bv. true, mode ≠ MODE_W ∧ mode ≠ MODE_RW |