With this change we emulate a case sensitive filesystem on top of insensitive filesystems. This means we correctly pick up case-only renames and throw a case conflict error when there would be multiple files differing only in case. This safety check has a small performance hit (about 20% more filesystem operations when scanning for changes). The new advanced folder option `caseSensitiveFS` can be used to disable the safety checks, retaining the previous behavior on systems known to be fully case sensitive. Co-authored-by: Jakob Borg <jakob@kastelo.net>
233 lines
6.3 KiB
Go
233 lines
6.3 KiB
Go
// Copyright (C) 2016 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 model
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import (
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"io/ioutil"
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"os"
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"testing"
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"time"
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"github.com/syncthing/syncthing/lib/config"
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"github.com/syncthing/syncthing/lib/db"
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"github.com/syncthing/syncthing/lib/db/backend"
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"github.com/syncthing/syncthing/lib/events"
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"github.com/syncthing/syncthing/lib/fs"
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"github.com/syncthing/syncthing/lib/ignore"
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"github.com/syncthing/syncthing/lib/protocol"
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"github.com/syncthing/syncthing/lib/rand"
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)
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var (
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myID, device1, device2 protocol.DeviceID
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defaultCfgWrapper config.Wrapper
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defaultFolderConfig config.FolderConfiguration
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defaultFs fs.Filesystem
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defaultCfg config.Configuration
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defaultAutoAcceptCfg config.Configuration
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)
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func init() {
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myID, _ = protocol.DeviceIDFromString("ZNWFSWE-RWRV2BD-45BLMCV-LTDE2UR-4LJDW6J-R5BPWEB-TXD27XJ-IZF5RA4")
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device1, _ = protocol.DeviceIDFromString("AIR6LPZ-7K4PTTV-UXQSMUU-CPQ5YWH-OEDFIIQ-JUG777G-2YQXXR5-YD6AWQR")
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device2, _ = protocol.DeviceIDFromString("GYRZZQB-IRNPV4Z-T7TC52W-EQYJ3TT-FDQW6MW-DFLMU42-SSSU6EM-FBK2VAY")
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defaultFolderConfig = testFolderConfig("testdata")
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defaultFs = defaultFolderConfig.Filesystem()
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defaultCfgWrapper = createTmpWrapper(config.New(myID))
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_, _ = defaultCfgWrapper.SetDevice(config.NewDeviceConfiguration(device1, "device1"))
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_, _ = defaultCfgWrapper.SetFolder(defaultFolderConfig)
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opts := defaultCfgWrapper.Options()
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opts.KeepTemporariesH = 1
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_, _ = defaultCfgWrapper.SetOptions(opts)
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defaultCfg = defaultCfgWrapper.RawCopy()
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defaultAutoAcceptCfg = config.Configuration{
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Devices: []config.DeviceConfiguration{
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{
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DeviceID: myID, // self
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},
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{
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DeviceID: device1,
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AutoAcceptFolders: true,
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},
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{
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DeviceID: device2,
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AutoAcceptFolders: true,
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},
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},
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Options: config.OptionsConfiguration{
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DefaultFolderPath: ".",
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},
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}
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}
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func tmpDefaultWrapper() (config.Wrapper, config.FolderConfiguration) {
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w := createTmpWrapper(defaultCfgWrapper.RawCopy())
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fcfg := testFolderConfigTmp()
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_, _ = w.SetFolder(fcfg)
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return w, fcfg
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}
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func testFolderConfigTmp() config.FolderConfiguration {
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tmpDir := createTmpDir()
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return testFolderConfig(tmpDir)
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}
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func testFolderConfig(path string) config.FolderConfiguration {
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cfg := config.NewFolderConfiguration(myID, "default", "default", fs.FilesystemTypeBasic, path)
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cfg.FSWatcherEnabled = false
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cfg.Devices = append(cfg.Devices, config.FolderDeviceConfiguration{DeviceID: device1})
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return cfg
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}
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func testFolderConfigFake() config.FolderConfiguration {
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cfg := config.NewFolderConfiguration(myID, "default", "default", fs.FilesystemTypeFake, rand.String(32)+"?content=true")
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cfg.FSWatcherEnabled = false
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cfg.Devices = append(cfg.Devices, config.FolderDeviceConfiguration{DeviceID: device1})
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return cfg
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}
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func setupModelWithConnection() (*model, *fakeConnection, config.FolderConfiguration) {
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w, fcfg := tmpDefaultWrapper()
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m, fc := setupModelWithConnectionFromWrapper(w)
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return m, fc, fcfg
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}
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func setupModelWithConnectionFromWrapper(w config.Wrapper) (*model, *fakeConnection) {
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m := setupModel(w)
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fc := addFakeConn(m, device1)
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fc.folder = "default"
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_ = m.ScanFolder("default")
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return m, fc
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}
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func setupModel(w config.Wrapper) *model {
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db := db.NewLowlevel(backend.OpenMemory())
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m := newModel(w, myID, "syncthing", "dev", db, nil)
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m.ServeBackground()
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m.ScanFolders()
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return m
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}
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func newModel(cfg config.Wrapper, id protocol.DeviceID, clientName, clientVersion string, ldb *db.Lowlevel, protectedFiles []string) *model {
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evLogger := events.NewLogger()
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m := NewModel(cfg, id, clientName, clientVersion, ldb, protectedFiles, evLogger).(*model)
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go evLogger.Serve()
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return m
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}
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func cleanupModel(m *model) {
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m.Stop()
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m.db.Close()
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m.evLogger.Stop()
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os.Remove(m.cfg.ConfigPath())
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}
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func cleanupModelAndRemoveDir(m *model, dir string) {
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cleanupModel(m)
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os.RemoveAll(dir)
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}
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func createTmpDir() string {
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tmpDir, err := ioutil.TempDir("", "syncthing_testFolder-")
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if err != nil {
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panic("Failed to create temporary testing dir")
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}
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return tmpDir
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}
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type alwaysChangedKey struct {
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fs fs.Filesystem
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name string
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}
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// alwaysChanges is an ignore.ChangeDetector that always returns true on Changed()
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type alwaysChanged struct {
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seen map[alwaysChangedKey]struct{}
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}
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func newAlwaysChanged() *alwaysChanged {
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return &alwaysChanged{
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seen: make(map[alwaysChangedKey]struct{}),
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}
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}
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func (c *alwaysChanged) Remember(fs fs.Filesystem, name string, _ time.Time) {
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c.seen[alwaysChangedKey{fs, name}] = struct{}{}
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}
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func (c *alwaysChanged) Reset() {
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c.seen = make(map[alwaysChangedKey]struct{})
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}
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func (c *alwaysChanged) Seen(fs fs.Filesystem, name string) bool {
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_, ok := c.seen[alwaysChangedKey{fs, name}]
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return ok
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}
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func (c *alwaysChanged) Changed() bool {
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return true
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}
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func localSize(t *testing.T, m Model, folder string) db.Counts {
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t.Helper()
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snap := dbSnapshot(t, m, folder)
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defer snap.Release()
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return snap.LocalSize()
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}
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func globalSize(t *testing.T, m Model, folder string) db.Counts {
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t.Helper()
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snap := dbSnapshot(t, m, folder)
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defer snap.Release()
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return snap.GlobalSize()
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}
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func receiveOnlyChangedSize(t *testing.T, m Model, folder string) db.Counts {
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t.Helper()
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snap := dbSnapshot(t, m, folder)
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defer snap.Release()
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return snap.ReceiveOnlyChangedSize()
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}
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func needSize(t *testing.T, m Model, folder string) db.Counts {
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t.Helper()
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snap := dbSnapshot(t, m, folder)
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defer snap.Release()
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return snap.NeedSize(protocol.LocalDeviceID)
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}
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func dbSnapshot(t *testing.T, m Model, folder string) *db.Snapshot {
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t.Helper()
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snap, err := m.DBSnapshot(folder)
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if err != nil {
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t.Fatal(err)
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}
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return snap
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}
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// Reach in and update the ignore matcher to one that always does
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// reloads when asked to, instead of checking file mtimes. This is
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// because we will be changing the files on disk often enough that the
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// mtimes will be unreliable to determine change status.
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func folderIgnoresAlwaysReload(m *model, fcfg config.FolderConfiguration) {
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m.removeFolder(fcfg)
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fset := db.NewFileSet(fcfg.ID, fcfg.Filesystem(), m.db)
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ignores := ignore.New(fcfg.Filesystem(), ignore.WithCache(true), ignore.WithChangeDetector(newAlwaysChanged()))
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m.fmut.Lock()
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m.addAndStartFolderLockedWithIgnores(fcfg, fset, ignores)
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m.fmut.Unlock()
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}
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