| ⟨fail#(; ; err); asynced := ?⟩ ( inode = p_inode ∧ buf-opt = buf-opt0 ∧ pageno0 = pageno2 ∧ pageno = pageno4 ∧ (boolvar ↔ boolvar0) ∧ err = err0 ∧ dirs = dirs0 ∧ files = files0 ∧ (asynced ↔ asynced1)), files1[m] = mkfile(m0, md0, m1, content), dirs = dirs1, files = files1, inode = mkinode(m, md, false, m1, 0, m2), n = n0, pageno = 0, pageno0 = 0, pageno1 = m2 / VFS_PAGE_SIZE, m ∈ files1, buf-opt.some? → # buf-opt.buf = VFS_PAGE_SIZE ⊦ ⟨afs_truncate#(n0, m2 / VFS_PAGE_SIZE; buf-opt, inode, boolvar, err, dirs1, files1, boolvar2)⟩ (buf-opt = buf-opt0 ∧ inode = p_inode ∧ (boolvar ↔ boolvar0) ∧ err = err0 ∧ dirs1 = dirs0 ∧ files1 = files0), VFS_PAGE_SIZE = 0 |
⟨asynced := ?⟩ ( inode = p_inode ∧ buf-opt = buf-opt0 ∧ pageno0 = pageno2 ∧ pageno = pageno4 ∧ (boolvar ↔ boolvar0) ∧ err1 = err0 ∧ dirs = dirs0 ∧ files = files0 ∧ (asynced ↔ asynced1)), ⟨fail#(; ; err)⟩ (err = err1), files1[m] = mkfile(m0, md0, m1, content), dirs = dirs1, files = files1, inode = mkinode(m, md, false, m1, 0, m2), n = n0, pageno = 0, pageno0 = 0, pageno1 = m2 / VFS_PAGE_SIZE, m ∈ files1, buf-opt.some? → # buf-opt.buf = VFS_PAGE_SIZE ⊦ ⟨afs_truncate#(n0, m2 / VFS_PAGE_SIZE; buf-opt, inode, boolvar, err, dirs1, files1, boolvar2)⟩ (buf-opt = buf-opt0 ∧ inode = p_inode ∧ (boolvar ↔ boolvar0) ∧ err = err0 ∧ dirs1 = dirs0 ∧ files1 = files0), VFS_PAGE_SIZE = 0