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75dcff0a0e
This adds a folder option "CopyOwnershipFromParent" which, when set, makes Syncthing attempt to retain the owner/group information when syncing files. Specifically, at the finisher stage we look at the parent dir to get owner/group and then attempt a Lchown call on the temp file. For this to succeed Syncthing must be running with the appropriate permissions. On Linux this is CAP_FOWNER, which can be granted by the service manager on startup or set on the binary in the filesystem. Other operating systems do other things, but often it's not required to run as full "root". On Windows this patch does nothing - ownership works differently there and is generally less of a deal, as permissions are inherited as ACLs anyway. There are unit tests on the Lchown functionality, which requires the above permissions to run. There is also a unit test on the folder which uses the fake filesystem and hence does not need special permissions.
50 lines
3.4 KiB
Go
50 lines
3.4 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 fs
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import (
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"context"
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"time"
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)
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type errorFilesystem struct {
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err error
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fsType FilesystemType
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uri string
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}
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func (fs *errorFilesystem) Chmod(name string, mode FileMode) error { return fs.err }
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func (fs *errorFilesystem) Lchown(name string, uid, gid int) error { return fs.err }
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func (fs *errorFilesystem) Chtimes(name string, atime time.Time, mtime time.Time) error { return fs.err }
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func (fs *errorFilesystem) Create(name string) (File, error) { return nil, fs.err }
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func (fs *errorFilesystem) CreateSymlink(target, name string) error { return fs.err }
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func (fs *errorFilesystem) DirNames(name string) ([]string, error) { return nil, fs.err }
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func (fs *errorFilesystem) Lstat(name string) (FileInfo, error) { return nil, fs.err }
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func (fs *errorFilesystem) Mkdir(name string, perm FileMode) error { return fs.err }
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func (fs *errorFilesystem) MkdirAll(name string, perm FileMode) error { return fs.err }
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func (fs *errorFilesystem) Open(name string) (File, error) { return nil, fs.err }
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func (fs *errorFilesystem) OpenFile(string, int, FileMode) (File, error) { return nil, fs.err }
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func (fs *errorFilesystem) ReadSymlink(name string) (string, error) { return "", fs.err }
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func (fs *errorFilesystem) Remove(name string) error { return fs.err }
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func (fs *errorFilesystem) RemoveAll(name string) error { return fs.err }
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func (fs *errorFilesystem) Rename(oldname, newname string) error { return fs.err }
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func (fs *errorFilesystem) Stat(name string) (FileInfo, error) { return nil, fs.err }
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func (fs *errorFilesystem) SymlinksSupported() bool { return false }
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func (fs *errorFilesystem) Walk(root string, walkFn WalkFunc) error { return fs.err }
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func (fs *errorFilesystem) Unhide(name string) error { return fs.err }
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func (fs *errorFilesystem) Hide(name string) error { return fs.err }
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func (fs *errorFilesystem) Glob(pattern string) ([]string, error) { return nil, fs.err }
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func (fs *errorFilesystem) SyncDir(name string) error { return fs.err }
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func (fs *errorFilesystem) Roots() ([]string, error) { return nil, fs.err }
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func (fs *errorFilesystem) Usage(name string) (Usage, error) { return Usage{}, fs.err }
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func (fs *errorFilesystem) Type() FilesystemType { return fs.fsType }
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func (fs *errorFilesystem) URI() string { return fs.uri }
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func (fs *errorFilesystem) SameFile(fi1, fi2 FileInfo) bool { return false }
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func (fs *errorFilesystem) Watch(path string, ignore Matcher, ctx context.Context, ignorePerms bool) (<-chan Event, error) {
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return nil, fs.err
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}
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