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https://github.com/octoleo/syncthing.git
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adce6fa473
This adds support for syncing ownership on Unixes and on Windows. The scanner always picks up ownership information, but it is not applied unless the new folder option "Sync Ownership" is set. Ownership data is stored in a new FileInfo field called "platform data". This is intended to hold further platform-specific data in the future (specifically, extended attributes), which is why the whole design is a bit overkill for just ownership.
137 lines
3.5 KiB
Go
137 lines
3.5 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 model
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import (
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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/events"
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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/util"
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"github.com/syncthing/syncthing/lib/versioner"
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)
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func init() {
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folderFactories[config.FolderTypeSendOnly] = newSendOnlyFolder
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}
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type sendOnlyFolder struct {
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folder
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}
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func newSendOnlyFolder(model *model, fset *db.FileSet, ignores *ignore.Matcher, cfg config.FolderConfiguration, _ versioner.Versioner, evLogger events.Logger, ioLimiter *util.Semaphore) service {
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f := &sendOnlyFolder{
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folder: newFolder(model, fset, ignores, cfg, evLogger, ioLimiter, nil),
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}
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f.folder.puller = f
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return f
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}
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func (f *sendOnlyFolder) PullErrors() []FileError {
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return nil
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}
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// pull checks need for files that only differ by metadata (no changes on disk)
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func (f *sendOnlyFolder) pull() (bool, error) {
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batch := db.NewFileInfoBatch(func(files []protocol.FileInfo) error {
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f.updateLocalsFromPulling(files)
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return nil
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})
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snap, err := f.dbSnapshot()
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if err != nil {
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return false, err
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}
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defer snap.Release()
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snap.WithNeed(protocol.LocalDeviceID, func(intf protocol.FileIntf) bool {
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batch.FlushIfFull()
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file := intf.(protocol.FileInfo)
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if f.ignores.ShouldIgnore(intf.FileName()) {
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file.SetIgnored()
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batch.Append(file)
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l.Debugln(f, "Handling ignored file", file)
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return true
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}
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curFile, ok := snap.Get(protocol.LocalDeviceID, intf.FileName())
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if !ok {
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if intf.IsInvalid() {
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// Global invalid file just exists for need accounting
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batch.Append(file)
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} else if intf.IsDeleted() {
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l.Debugln("Should never get a deleted file as needed when we don't have it")
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f.evLogger.Log(events.Failure, "got deleted file that doesn't exist locally as needed when pulling on send-only")
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}
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return true
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}
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if !file.IsEquivalentOptional(curFile, protocol.FileInfoComparison{
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ModTimeWindow: f.modTimeWindow,
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IgnorePerms: f.IgnorePerms,
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IgnoreOwnership: !f.SyncOwnership,
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}) {
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return true
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}
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batch.Append(file)
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l.Debugln(f, "Merging versions of identical file", file)
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return true
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})
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batch.Flush()
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return true, nil
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}
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func (f *sendOnlyFolder) Override() {
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f.doInSync(f.override)
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}
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func (f *sendOnlyFolder) override() error {
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l.Infoln("Overriding global state on folder", f.Description())
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f.setState(FolderScanning)
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defer f.setState(FolderIdle)
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batch := db.NewFileInfoBatch(func(files []protocol.FileInfo) error {
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f.updateLocalsFromScanning(files)
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return nil
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})
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snap, err := f.dbSnapshot()
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if err != nil {
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return err
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}
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defer snap.Release()
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snap.WithNeed(protocol.LocalDeviceID, func(fi protocol.FileIntf) bool {
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need := fi.(protocol.FileInfo)
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_ = batch.FlushIfFull()
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have, ok := snap.Get(protocol.LocalDeviceID, need.Name)
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// Don't override files that are in a bad state (ignored,
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// unsupported, must rescan, ...).
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if ok && have.IsInvalid() {
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return true
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}
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if !ok || have.Name != need.Name {
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// We are missing the file
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need.SetDeleted(f.shortID)
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} else {
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// We have the file, replace with our version
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have.Version = have.Version.Merge(need.Version).Update(f.shortID)
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need = have
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}
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need.Sequence = 0
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batch.Append(need)
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return true
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})
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return batch.Flush()
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}
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