| files[ino2] = mkfile(m0, md0, # links(ino2, dirs), content0), buf-opt = none, content = files[inode.ino].content, err = ESUCCESS, fs = abs-files(files), ino = inode.ino, ino0 = min(n, inode.size), ino1 = inode.size % VFS_PAGE_SIZE, ino4 = 0, ino5 = 0, ino6 = ino4, ino7 = ino5, inode = mkinode(ino2, md0, false, # links(ino2, dirs), 0, m0), new_inode = inode, pageno = m0 / VFS_PAGE_SIZE, root.dir?, dom of < ino3, abs(root, ROOT_INO)(dirs), afs-cons(dirs, files), fids-cons(root, abs-files(files), abs-of(of)), ispath(path, ROOT_INO, ino2, dirs, files), of-cons(of, dirs, files), pw(user, md0), px-parent(user, path, ROOT_INO, dirs, files), ROOT_INO ∈ dirs, ino2 ∈ files, pageno ∈ files[ino].content, ino1 + (VFS_PAGE_SIZE - ino1) ≤ # files[ino].content[pageno], inode.size ≤ n, VFS_PAGE_SIZE ≥ ino1, psynced → asynced0, pageno ∈ content ∨ buf-opt.some? ⊦ [new_inode.size := n; files0 := files[ino, files[ino].content:= (content[pageno, fill(files[ino].content[pageno], zero, ino1, VFS_PAGE_SIZE - ino1)] upto ino0)]; afs_inode_sync#(new_inode; dirs, files0); inode := getinode(inode.ino, dirs, files0); err := ESUCCESS; asynced := ?] ( of-cons(of, dirs, files0) ∧ afs-cons(dirs, files0) → ⟨posix_truncate#(path, n, user, root, abs-of(of); err1, fs; psynced)⟩ (fs = abs-files(files0) ∧ abs(root, ROOT_INO)(dirs) ∧ (psynced → asynced) ∧ err = err1)), VFS_PAGE_SIZE = 0, ino1 = 0, root[path].dir?, ino2 ∈ dirs |
files[ino2] = mkfile(m0, md0, # links(ino2, dirs), content0), buf-opt = none, content = files[inode.ino].content, err = ESUCCESS, fs = abs-files(files), ino = inode.ino, ino0 = min(n, inode.size), ino1 = inode.size % VFS_PAGE_SIZE, ino4 = 0, ino5 = 0, ino6 = ino4, ino7 = ino5, inode = mkinode(ino2, md0, false, # links(ino2, dirs), 0, m0), new_inode = inode, pageno = m0 / VFS_PAGE_SIZE, root.dir?, dom of < ino3, abs(root, ROOT_INO)(dirs), afs-cons(dirs, files), fids-cons(root, abs-files(files), abs-of(of)), ispath(path, ROOT_INO, ino2, dirs, files), of-cons(of, dirs, files), pw(user, md0), px-parent(user, path, ROOT_INO, dirs, files), pageno ∈ files[ino].content, ino2 ∈ files, ROOT_INO ∈ dirs, inode.size ≤ n, ino1 + (VFS_PAGE_SIZE - ino1) ≤ # files[ino].content[pageno], VFS_PAGE_SIZE ≥ ino1, psynced → asynced0, pageno ∈ content ∨ buf-opt.some? ⊦ [files0 := files[ino, files[ino].content:= (content[pageno, fill(files[ino].content[pageno], zero, ino1, VFS_PAGE_SIZE - ino1)] upto ino0)]; afs_inode_sync#(new_inode.size:= n; dirs, files0); inode := getinode(inode.ino, dirs, files0); err := ESUCCESS; asynced := ?] ( of-cons(of, dirs, files0) ∧ afs-cons(dirs, files0) → ⟨posix_truncate#(path, n, user, root, abs-of(of); err1, fs; psynced)⟩ (fs = abs-files(files0) ∧ abs(root, ROOT_INO)(dirs) ∧ (psynced → asynced) ∧ err = err1)), VFS_PAGE_SIZE = 0, ino1 = 0, root[path].dir?, ino2 ∈ dirs