mirror of
https://github.com/octoleo/syncthing.git
synced 2024-11-09 14:50:56 +00:00
858 lines
20 KiB
Go
858 lines
20 KiB
Go
// Copyright (C) 2014 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package db
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import (
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"bytes"
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"encoding/binary"
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"github.com/syncthing/syncthing/lib/db/backend"
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"github.com/syncthing/syncthing/lib/protocol"
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)
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// Lowlevel is the lowest level database interface. It has a very simple
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// purpose: hold the actual backend database, and the in-memory state
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// that belong to that database. In the same way that a single on disk
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// database can only be opened once, there should be only one Lowlevel for
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// any given backend.
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type Lowlevel struct {
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backend.Backend
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folderIdx *smallIndex
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deviceIdx *smallIndex
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keyer keyer
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}
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func NewLowlevel(backend backend.Backend) *Lowlevel {
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db := &Lowlevel{
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Backend: backend,
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folderIdx: newSmallIndex(backend, []byte{KeyTypeFolderIdx}),
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deviceIdx: newSmallIndex(backend, []byte{KeyTypeDeviceIdx}),
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}
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db.keyer = newDefaultKeyer(db.folderIdx, db.deviceIdx)
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return db
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}
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// ListFolders returns the list of folders currently in the database
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func (db *Lowlevel) ListFolders() []string {
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return db.folderIdx.Values()
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}
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// updateRemoteFiles adds a list of fileinfos to the database and updates the
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// global versionlist and metadata.
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func (db *Lowlevel) updateRemoteFiles(folder, device []byte, fs []protocol.FileInfo, meta *metadataTracker) error {
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t, err := db.newReadWriteTransaction()
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if err != nil {
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return err
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}
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defer t.close()
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var dk, gk, keyBuf []byte
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devID := protocol.DeviceIDFromBytes(device)
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for _, f := range fs {
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name := []byte(f.Name)
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dk, err = db.keyer.GenerateDeviceFileKey(dk, folder, device, name)
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if err != nil {
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return err
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}
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ef, ok, err := t.getFileTrunc(dk, true)
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if err != nil {
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return err
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}
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if ok && unchanged(f, ef) {
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continue
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}
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if ok {
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meta.removeFile(devID, ef)
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}
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meta.addFile(devID, f)
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l.Debugf("insert; folder=%q device=%v %v", folder, devID, f)
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if err := t.Put(dk, mustMarshal(&f)); err != nil {
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return err
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}
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gk, err = db.keyer.GenerateGlobalVersionKey(gk, folder, name)
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if err != nil {
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return err
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}
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keyBuf, _, err = t.updateGlobal(gk, keyBuf, folder, device, f, meta)
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if err != nil {
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return err
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}
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if err := t.Checkpoint(); err != nil {
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return err
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}
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}
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return t.commit()
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}
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// updateLocalFiles adds fileinfos to the db, and updates the global versionlist,
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// metadata, sequence and blockmap buckets.
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func (db *Lowlevel) updateLocalFiles(folder []byte, fs []protocol.FileInfo, meta *metadataTracker) error {
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t, err := db.newReadWriteTransaction()
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if err != nil {
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return err
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}
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defer t.close()
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var dk, gk, keyBuf []byte
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blockBuf := make([]byte, 4)
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for _, f := range fs {
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name := []byte(f.Name)
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dk, err = db.keyer.GenerateDeviceFileKey(dk, folder, protocol.LocalDeviceID[:], name)
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if err != nil {
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return err
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}
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ef, ok, err := t.getFileByKey(dk)
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if err != nil {
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return err
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}
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if ok && unchanged(f, ef) {
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continue
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}
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if ok {
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if !ef.IsDirectory() && !ef.IsDeleted() && !ef.IsInvalid() {
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for _, block := range ef.Blocks {
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keyBuf, err = db.keyer.GenerateBlockMapKey(keyBuf, folder, block.Hash, name)
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if err != nil {
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return err
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}
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if err := t.Delete(keyBuf); err != nil {
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return err
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}
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}
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}
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keyBuf, err = db.keyer.GenerateSequenceKey(keyBuf, folder, ef.SequenceNo())
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if err != nil {
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return err
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}
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if err := t.Delete(keyBuf); err != nil {
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return err
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}
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l.Debugf("removing sequence; folder=%q sequence=%v %v", folder, ef.SequenceNo(), ef.FileName())
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}
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f.Sequence = meta.nextLocalSeq()
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if ok {
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meta.removeFile(protocol.LocalDeviceID, ef)
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}
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meta.addFile(protocol.LocalDeviceID, f)
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l.Debugf("insert (local); folder=%q %v", folder, f)
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if err := t.Put(dk, mustMarshal(&f)); err != nil {
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return err
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}
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gk, err = db.keyer.GenerateGlobalVersionKey(gk, folder, []byte(f.Name))
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if err != nil {
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return err
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}
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keyBuf, _, err = t.updateGlobal(gk, keyBuf, folder, protocol.LocalDeviceID[:], f, meta)
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if err != nil {
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return err
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}
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keyBuf, err = db.keyer.GenerateSequenceKey(keyBuf, folder, f.Sequence)
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if err != nil {
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return err
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}
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if err := t.Put(keyBuf, dk); err != nil {
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return err
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}
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l.Debugf("adding sequence; folder=%q sequence=%v %v", folder, f.Sequence, f.Name)
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if !f.IsDirectory() && !f.IsDeleted() && !f.IsInvalid() {
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for i, block := range f.Blocks {
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binary.BigEndian.PutUint32(blockBuf, uint32(i))
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keyBuf, err = db.keyer.GenerateBlockMapKey(keyBuf, folder, block.Hash, name)
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if err != nil {
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return err
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}
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if err := t.Put(keyBuf, blockBuf); err != nil {
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return err
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}
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}
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}
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if err := t.Checkpoint(); err != nil {
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return err
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}
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}
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return t.commit()
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}
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func (db *Lowlevel) withHave(folder, device, prefix []byte, truncate bool, fn Iterator) error {
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t, err := db.newReadOnlyTransaction()
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if err != nil {
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return err
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}
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defer t.close()
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if len(prefix) > 0 {
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unslashedPrefix := prefix
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if bytes.HasSuffix(prefix, []byte{'/'}) {
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unslashedPrefix = unslashedPrefix[:len(unslashedPrefix)-1]
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} else {
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prefix = append(prefix, '/')
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}
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key, err := db.keyer.GenerateDeviceFileKey(nil, folder, device, unslashedPrefix)
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if err != nil {
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return err
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}
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if f, ok, err := t.getFileTrunc(key, true); err != nil {
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return err
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} else if ok && !fn(f) {
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return nil
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}
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}
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key, err := db.keyer.GenerateDeviceFileKey(nil, folder, device, prefix)
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if err != nil {
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return err
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}
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dbi, err := t.NewPrefixIterator(key)
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if err != nil {
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return err
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}
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defer dbi.Release()
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for dbi.Next() {
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name := db.keyer.NameFromDeviceFileKey(dbi.Key())
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if len(prefix) > 0 && !bytes.HasPrefix(name, prefix) {
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return nil
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}
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f, err := unmarshalTrunc(dbi.Value(), truncate)
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if err != nil {
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l.Debugln("unmarshal error:", err)
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continue
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}
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if !fn(f) {
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return nil
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}
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}
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return dbi.Error()
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}
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func (db *Lowlevel) withHaveSequence(folder []byte, startSeq int64, fn Iterator) error {
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t, err := db.newReadOnlyTransaction()
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if err != nil {
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return err
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}
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defer t.close()
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first, err := db.keyer.GenerateSequenceKey(nil, folder, startSeq)
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if err != nil {
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return err
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}
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last, err := db.keyer.GenerateSequenceKey(nil, folder, maxInt64)
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if err != nil {
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return err
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}
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dbi, err := t.NewRangeIterator(first, last)
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if err != nil {
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return err
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}
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defer dbi.Release()
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for dbi.Next() {
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f, ok, err := t.getFileByKey(dbi.Value())
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if err != nil {
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return err
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}
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if !ok {
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l.Debugln("missing file for sequence number", db.keyer.SequenceFromSequenceKey(dbi.Key()))
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continue
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}
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if shouldDebug() {
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if seq := db.keyer.SequenceFromSequenceKey(dbi.Key()); f.Sequence != seq {
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l.Warnf("Sequence index corruption (folder %v, file %v): sequence %d != expected %d", string(folder), f.Name, f.Sequence, seq)
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panic("sequence index corruption")
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}
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}
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if !fn(f) {
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return nil
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}
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}
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return dbi.Error()
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}
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func (db *Lowlevel) withAllFolderTruncated(folder []byte, fn func(device []byte, f FileInfoTruncated) bool) error {
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t, err := db.newReadWriteTransaction()
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if err != nil {
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return err
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}
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defer t.close()
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key, err := db.keyer.GenerateDeviceFileKey(nil, folder, nil, nil)
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if err != nil {
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return err
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}
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dbi, err := t.NewPrefixIterator(key.WithoutNameAndDevice())
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if err != nil {
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return err
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}
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defer dbi.Release()
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var gk, keyBuf []byte
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for dbi.Next() {
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device, ok := db.keyer.DeviceFromDeviceFileKey(dbi.Key())
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if !ok {
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// Not having the device in the index is bad. Clear it.
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if err := t.Delete(dbi.Key()); err != nil {
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return err
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}
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continue
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}
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var f FileInfoTruncated
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// The iterator function may keep a reference to the unmarshalled
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// struct, which in turn references the buffer it was unmarshalled
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// from. dbi.Value() just returns an internal slice that it reuses, so
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// we need to copy it.
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err := f.Unmarshal(append([]byte{}, dbi.Value()...))
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if err != nil {
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return err
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}
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switch f.Name {
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case "", ".", "..", "/": // A few obviously invalid filenames
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l.Infof("Dropping invalid filename %q from database", f.Name)
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name := []byte(f.Name)
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gk, err = db.keyer.GenerateGlobalVersionKey(gk, folder, name)
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if err != nil {
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return err
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}
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keyBuf, err = t.removeFromGlobal(gk, keyBuf, folder, device, name, nil)
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if err != nil {
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return err
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}
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if err := t.Delete(dbi.Key()); err != nil {
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return err
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}
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continue
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}
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if !fn(device, f) {
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return nil
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}
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}
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if err := dbi.Error(); err != nil {
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return err
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}
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return t.commit()
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}
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func (db *Lowlevel) getFileDirty(folder, device, file []byte) (protocol.FileInfo, bool, error) {
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t, err := db.newReadOnlyTransaction()
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if err != nil {
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return protocol.FileInfo{}, false, err
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}
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defer t.close()
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return t.getFile(folder, device, file)
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}
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func (db *Lowlevel) getGlobalDirty(folder, file []byte, truncate bool) (FileIntf, bool, error) {
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t, err := db.newReadOnlyTransaction()
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if err != nil {
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return nil, false, err
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}
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defer t.close()
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_, f, ok, err := t.getGlobal(nil, folder, file, truncate)
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return f, ok, err
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}
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func (db *Lowlevel) withGlobal(folder, prefix []byte, truncate bool, fn Iterator) error {
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t, err := db.newReadOnlyTransaction()
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if err != nil {
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return err
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}
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defer t.close()
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if len(prefix) > 0 {
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unslashedPrefix := prefix
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if bytes.HasSuffix(prefix, []byte{'/'}) {
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unslashedPrefix = unslashedPrefix[:len(unslashedPrefix)-1]
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} else {
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prefix = append(prefix, '/')
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}
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if _, f, ok, err := t.getGlobal(nil, folder, unslashedPrefix, truncate); err != nil {
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return err
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} else if ok && !fn(f) {
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return nil
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}
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}
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key, err := db.keyer.GenerateGlobalVersionKey(nil, folder, prefix)
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if err != nil {
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return err
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}
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dbi, err := t.NewPrefixIterator(key)
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if err != nil {
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return err
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}
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defer dbi.Release()
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var dk []byte
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for dbi.Next() {
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name := db.keyer.NameFromGlobalVersionKey(dbi.Key())
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if len(prefix) > 0 && !bytes.HasPrefix(name, prefix) {
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return nil
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}
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vl, ok := unmarshalVersionList(dbi.Value())
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if !ok {
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continue
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}
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dk, err = db.keyer.GenerateDeviceFileKey(dk, folder, vl.Versions[0].Device, name)
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if err != nil {
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return err
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}
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f, ok, err := t.getFileTrunc(dk, truncate)
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if err != nil {
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return err
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}
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if !ok {
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continue
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}
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if !fn(f) {
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return nil
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}
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}
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if err != nil {
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return err
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}
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return dbi.Error()
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}
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func (db *Lowlevel) availability(folder, file []byte) ([]protocol.DeviceID, error) {
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k, err := db.keyer.GenerateGlobalVersionKey(nil, folder, file)
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if err != nil {
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return nil, err
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}
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bs, err := db.Get(k)
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if backend.IsNotFound(err) {
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return nil, nil
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}
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if err != nil {
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return nil, err
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}
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vl, ok := unmarshalVersionList(bs)
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if !ok {
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return nil, nil
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}
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var devices []protocol.DeviceID
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for _, v := range vl.Versions {
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if !v.Version.Equal(vl.Versions[0].Version) {
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break
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}
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if v.Invalid {
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continue
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}
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n := protocol.DeviceIDFromBytes(v.Device)
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devices = append(devices, n)
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}
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return devices, nil
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}
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func (db *Lowlevel) withNeed(folder, device []byte, truncate bool, fn Iterator) error {
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if bytes.Equal(device, protocol.LocalDeviceID[:]) {
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return db.withNeedLocal(folder, truncate, fn)
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}
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t, err := db.newReadOnlyTransaction()
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if err != nil {
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return err
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}
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defer t.close()
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key, err := db.keyer.GenerateGlobalVersionKey(nil, folder, nil)
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if err != nil {
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return err
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}
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dbi, err := t.NewPrefixIterator(key.WithoutName())
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if err != nil {
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return err
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}
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defer dbi.Release()
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var dk []byte
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devID := protocol.DeviceIDFromBytes(device)
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for dbi.Next() {
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vl, ok := unmarshalVersionList(dbi.Value())
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if !ok {
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continue
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}
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haveFV, have := vl.Get(device)
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// XXX: This marks Concurrent (i.e. conflicting) changes as
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// needs. Maybe we should do that, but it needs special
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// handling in the puller.
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if have && haveFV.Version.GreaterEqual(vl.Versions[0].Version) {
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continue
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}
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name := db.keyer.NameFromGlobalVersionKey(dbi.Key())
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needVersion := vl.Versions[0].Version
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needDevice := protocol.DeviceIDFromBytes(vl.Versions[0].Device)
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for i := range vl.Versions {
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if !vl.Versions[i].Version.Equal(needVersion) {
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// We haven't found a valid copy of the file with the needed version.
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break
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}
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if vl.Versions[i].Invalid {
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// The file is marked invalid, don't use it.
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continue
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}
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dk, err = db.keyer.GenerateDeviceFileKey(dk, folder, vl.Versions[i].Device, name)
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if err != nil {
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return err
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}
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gf, ok, err := t.getFileTrunc(dk, truncate)
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if err != nil {
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return err
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}
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if !ok {
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continue
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}
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if gf.IsDeleted() && !have {
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// We don't need deleted files that we don't have
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break
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}
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l.Debugf("need folder=%q device=%v name=%q have=%v invalid=%v haveV=%v globalV=%v globalDev=%v", folder, devID, name, have, haveFV.Invalid, haveFV.Version, needVersion, needDevice)
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if !fn(gf) {
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return nil
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}
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// This file is handled, no need to look further in the version list
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break
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}
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}
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return dbi.Error()
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}
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func (db *Lowlevel) withNeedLocal(folder []byte, truncate bool, fn Iterator) error {
|
|
t, err := db.newReadOnlyTransaction()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer t.close()
|
|
|
|
key, err := db.keyer.GenerateNeedFileKey(nil, folder, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
dbi, err := t.NewPrefixIterator(key.WithoutName())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer dbi.Release()
|
|
|
|
var keyBuf []byte
|
|
var f FileIntf
|
|
var ok bool
|
|
for dbi.Next() {
|
|
keyBuf, f, ok, err = t.getGlobal(keyBuf, folder, db.keyer.NameFromGlobalVersionKey(dbi.Key()), truncate)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !ok {
|
|
continue
|
|
}
|
|
if !fn(f) {
|
|
return nil
|
|
}
|
|
}
|
|
return dbi.Error()
|
|
}
|
|
|
|
func (db *Lowlevel) dropFolder(folder []byte) error {
|
|
t, err := db.newReadWriteTransaction()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer t.close()
|
|
|
|
// Remove all items related to the given folder from the device->file bucket
|
|
k0, err := db.keyer.GenerateDeviceFileKey(nil, folder, nil, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := t.deleteKeyPrefix(k0.WithoutNameAndDevice()); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Remove all sequences related to the folder
|
|
k1, err := db.keyer.GenerateSequenceKey(nil, folder, 0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := t.deleteKeyPrefix(k1.WithoutSequence()); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Remove all items related to the given folder from the global bucket
|
|
k2, err := db.keyer.GenerateGlobalVersionKey(nil, folder, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := t.deleteKeyPrefix(k2.WithoutName()); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Remove all needs related to the folder
|
|
k3, err := db.keyer.GenerateNeedFileKey(nil, folder, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := t.deleteKeyPrefix(k3.WithoutName()); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Remove the blockmap of the folder
|
|
k4, err := db.keyer.GenerateBlockMapKey(nil, folder, nil, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := t.deleteKeyPrefix(k4.WithoutHashAndName()); err != nil {
|
|
return err
|
|
}
|
|
|
|
return t.commit()
|
|
}
|
|
|
|
func (db *Lowlevel) dropDeviceFolder(device, folder []byte, meta *metadataTracker) error {
|
|
t, err := db.newReadWriteTransaction()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer t.close()
|
|
|
|
key, err := db.keyer.GenerateDeviceFileKey(nil, folder, device, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
dbi, err := t.NewPrefixIterator(key)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
var gk, keyBuf []byte
|
|
for dbi.Next() {
|
|
name := db.keyer.NameFromDeviceFileKey(dbi.Key())
|
|
gk, err = db.keyer.GenerateGlobalVersionKey(gk, folder, name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
keyBuf, err = t.removeFromGlobal(gk, keyBuf, folder, device, name, meta)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := t.Delete(dbi.Key()); err != nil {
|
|
return err
|
|
}
|
|
if err := t.Checkpoint(); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if err := dbi.Error(); err != nil {
|
|
return err
|
|
}
|
|
dbi.Release()
|
|
|
|
if bytes.Equal(device, protocol.LocalDeviceID[:]) {
|
|
key, err := db.keyer.GenerateBlockMapKey(nil, folder, nil, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := t.deleteKeyPrefix(key.WithoutHashAndName()); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return t.commit()
|
|
}
|
|
|
|
func (db *Lowlevel) checkGlobals(folder []byte, meta *metadataTracker) error {
|
|
t, err := db.newReadWriteTransaction()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer t.close()
|
|
|
|
key, err := db.keyer.GenerateGlobalVersionKey(nil, folder, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
dbi, err := t.NewPrefixIterator(key.WithoutName())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer dbi.Release()
|
|
|
|
var dk []byte
|
|
for dbi.Next() {
|
|
vl, ok := unmarshalVersionList(dbi.Value())
|
|
if !ok {
|
|
continue
|
|
}
|
|
|
|
// Check the global version list for consistency. An issue in previous
|
|
// versions of goleveldb could result in reordered writes so that
|
|
// there are global entries pointing to no longer existing files. Here
|
|
// we find those and clear them out.
|
|
|
|
name := db.keyer.NameFromGlobalVersionKey(dbi.Key())
|
|
var newVL VersionList
|
|
for i, version := range vl.Versions {
|
|
dk, err = db.keyer.GenerateDeviceFileKey(dk, folder, version.Device, name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
_, err := t.Get(dk)
|
|
if backend.IsNotFound(err) {
|
|
continue
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
newVL.Versions = append(newVL.Versions, version)
|
|
|
|
if i == 0 {
|
|
if fi, ok, err := t.getFileByKey(dk); err != nil {
|
|
return err
|
|
} else if ok {
|
|
meta.addFile(protocol.GlobalDeviceID, fi)
|
|
}
|
|
}
|
|
}
|
|
|
|
if len(newVL.Versions) != len(vl.Versions) {
|
|
if err := t.Put(dbi.Key(), mustMarshal(&newVL)); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
if err := dbi.Error(); err != nil {
|
|
return err
|
|
}
|
|
|
|
l.Debugf("db check completed for %q", folder)
|
|
return t.commit()
|
|
}
|
|
|
|
func (db *Lowlevel) getIndexID(device, folder []byte) (protocol.IndexID, error) {
|
|
key, err := db.keyer.GenerateIndexIDKey(nil, device, folder)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
cur, err := db.Get(key)
|
|
if backend.IsNotFound(err) {
|
|
return 0, nil
|
|
} else if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
var id protocol.IndexID
|
|
if err := id.Unmarshal(cur); err != nil {
|
|
return 0, nil
|
|
}
|
|
|
|
return id, nil
|
|
}
|
|
|
|
func (db *Lowlevel) setIndexID(device, folder []byte, id protocol.IndexID) error {
|
|
bs, _ := id.Marshal() // marshalling can't fail
|
|
key, err := db.keyer.GenerateIndexIDKey(nil, device, folder)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return db.Put(key, bs)
|
|
}
|
|
|
|
func (db *Lowlevel) dropMtimes(folder []byte) error {
|
|
key, err := db.keyer.GenerateMtimesKey(nil, folder)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return db.dropPrefix(key)
|
|
}
|
|
|
|
func (db *Lowlevel) dropFolderMeta(folder []byte) error {
|
|
key, err := db.keyer.GenerateFolderMetaKey(nil, folder)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return db.dropPrefix(key)
|
|
}
|
|
|
|
func (db *Lowlevel) dropPrefix(prefix []byte) error {
|
|
t, err := db.newReadWriteTransaction()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer t.close()
|
|
|
|
if err := t.deleteKeyPrefix(prefix); err != nil {
|
|
return err
|
|
}
|
|
return t.commit()
|
|
}
|
|
|
|
func unmarshalTrunc(bs []byte, truncate bool) (FileIntf, error) {
|
|
if truncate {
|
|
var tf FileInfoTruncated
|
|
err := tf.Unmarshal(bs)
|
|
return tf, err
|
|
}
|
|
|
|
var tf protocol.FileInfo
|
|
err := tf.Unmarshal(bs)
|
|
return tf, err
|
|
}
|
|
|
|
func unmarshalVersionList(data []byte) (VersionList, bool) {
|
|
var vl VersionList
|
|
if err := vl.Unmarshal(data); err != nil {
|
|
l.Debugln("unmarshal error:", err)
|
|
return VersionList{}, false
|
|
}
|
|
if len(vl.Versions) == 0 {
|
|
l.Debugln("empty version list")
|
|
return VersionList{}, false
|
|
}
|
|
return vl, true
|
|
}
|
|
|
|
// unchanged checks if two files are the same and thus don't need to be updated.
|
|
// Local flags or the invalid bit might change without the version
|
|
// being bumped.
|
|
func unchanged(nf, ef FileIntf) bool {
|
|
return ef.FileVersion().Equal(nf.FileVersion()) && ef.IsInvalid() == nf.IsInvalid() && ef.FileLocalFlags() == nf.FileLocalFlags()
|
|
}
|