mirror of
https://github.com/octoleo/syncthing.git
synced 2024-11-10 23:30:58 +00:00
6cac308bcd
This adds support for syncing extended attributes on supported filesystem on Linux, macOS, FreeBSD and NetBSD. Windows is currently excluded because the APIs seem onerous and annoying and frankly the uses cases seem few and far between. On Unixes this also covers ACLs as those are stored as extended attributes. Similar to ownership syncing this will optional & opt-in, which two settings controlling the main behavior: one to "sync" xattrs (read & write) and another one to "scan" xattrs (only read them so other devices can "sync" them, but not apply any locally). Co-authored-by: Tomasz Wilczyński <twilczynski@naver.com>
673 lines
16 KiB
Go
673 lines
16 KiB
Go
// Copyright (C) 2017 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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"bytes"
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"sort"
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"strconv"
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"strings"
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"testing"
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"time"
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"github.com/syncthing/syncthing/lib/build"
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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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func setup(t *testing.T) (*BasicFilesystem, string) {
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t.Helper()
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dir := t.TempDir()
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return newBasicFilesystem(dir), dir
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}
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func TestChmodFile(t *testing.T) {
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fs, dir := setup(t)
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path := filepath.Join(dir, "file")
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defer os.Chmod(path, 0666)
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fd, err := os.Create(path)
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if err != nil {
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t.Error(err)
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}
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fd.Close()
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if err := os.Chmod(path, 0666); err != nil {
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t.Error(err)
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}
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if stat, err := os.Stat(path); err != nil || stat.Mode()&os.ModePerm != 0666 {
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t.Errorf("wrong perm: %t %#o", err == nil, stat.Mode()&os.ModePerm)
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}
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if err := fs.Chmod("file", 0444); err != nil {
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t.Error(err)
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}
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if stat, err := os.Stat(path); err != nil || stat.Mode()&os.ModePerm != 0444 {
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t.Errorf("wrong perm: %t %#o", err == nil, stat.Mode()&os.ModePerm)
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}
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}
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func TestChownFile(t *testing.T) {
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if build.IsWindows {
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t.Skip("Not supported on Windows")
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return
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}
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if os.Getuid() != 0 {
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// We are not root. No expectation of being able to chown. Our tests
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// typically don't run with CAP_FOWNER.
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t.Skip("Test not possible")
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return
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}
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fs, dir := setup(t)
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path := filepath.Join(dir, "file")
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defer os.Chmod(path, 0666)
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fd, err := os.Create(path)
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if err != nil {
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t.Error("Unexpected error:", err)
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}
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fd.Close()
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_, err = fs.Lstat("file")
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if err != nil {
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t.Error("Unexpected error:", err)
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}
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newUID := 1000 + rand.Intn(30000)
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newGID := 1000 + rand.Intn(30000)
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if err := fs.Lchown("file", strconv.Itoa(newUID), strconv.Itoa(newGID)); err != nil {
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t.Error("Unexpected error:", err)
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}
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info, err := fs.Lstat("file")
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if err != nil {
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t.Error("Unexpected error:", err)
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}
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if info.Owner() != newUID {
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t.Errorf("Incorrect owner, expected %d but got %d", newUID, info.Owner())
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}
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if info.Group() != newGID {
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t.Errorf("Incorrect group, expected %d but got %d", newGID, info.Group())
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}
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}
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func TestChmodDir(t *testing.T) {
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fs, dir := setup(t)
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path := filepath.Join(dir, "dir")
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mode := os.FileMode(0755)
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if build.IsWindows {
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mode = os.FileMode(0777)
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}
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defer os.Chmod(path, mode)
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if err := os.Mkdir(path, mode); err != nil {
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t.Error(err)
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}
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// On UNIX, Mkdir will subtract the umask, so force desired mode explicitly
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if err := os.Chmod(path, mode); err != nil {
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t.Error(err)
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}
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if stat, err := os.Stat(path); err != nil || stat.Mode()&os.ModePerm != mode {
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t.Errorf("wrong perm: %t %#o", err == nil, stat.Mode()&os.ModePerm)
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}
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if err := fs.Chmod("dir", 0555); err != nil {
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t.Error(err)
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}
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if stat, err := os.Stat(path); err != nil || stat.Mode()&os.ModePerm != 0555 {
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t.Errorf("wrong perm: %t %#o", err == nil, stat.Mode()&os.ModePerm)
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}
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}
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func TestChtimes(t *testing.T) {
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fs, dir := setup(t)
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path := filepath.Join(dir, "file")
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fd, err := os.Create(path)
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if err != nil {
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t.Error(err)
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}
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fd.Close()
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mtime := time.Now().Add(-time.Hour)
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fs.Chtimes("file", mtime, mtime)
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stat, err := os.Stat(path)
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if err != nil {
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t.Error(err)
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}
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diff := stat.ModTime().Sub(mtime)
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if diff > 3*time.Second || diff < -3*time.Second {
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t.Errorf("%s != %s", stat.Mode(), mtime)
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}
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}
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func TestCreate(t *testing.T) {
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fs, dir := setup(t)
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path := filepath.Join(dir, "file")
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if _, err := os.Stat(path); err == nil {
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t.Errorf("exists?")
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}
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fd, err := fs.Create("file")
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if err != nil {
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t.Error(err)
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}
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fd.Close()
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if _, err := os.Stat(path); err != nil {
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t.Error(err)
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}
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}
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func TestCreateSymlink(t *testing.T) {
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if build.IsWindows {
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t.Skip("windows not supported")
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}
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fs, dir := setup(t)
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path := filepath.Join(dir, "file")
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if err := fs.CreateSymlink("blah", "file"); err != nil {
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t.Error(err)
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}
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if target, err := os.Readlink(path); err != nil || target != "blah" {
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t.Error("target", target, "err", err)
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}
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if err := os.Remove(path); err != nil {
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t.Error(err)
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}
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if err := fs.CreateSymlink(filepath.Join("..", "blah"), "file"); err != nil {
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t.Error(err)
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}
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if target, err := os.Readlink(path); err != nil || target != filepath.Join("..", "blah") {
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t.Error("target", target, "err", err)
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}
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}
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func TestDirNames(t *testing.T) {
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fs, dir := setup(t)
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// Case differences
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testCases := []string{
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"a",
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"bC",
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}
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sort.Strings(testCases)
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for _, sub := range testCases {
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if err := os.Mkdir(filepath.Join(dir, sub), 0777); err != nil {
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t.Error(err)
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}
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}
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if dirs, err := fs.DirNames("."); err != nil || len(dirs) != len(testCases) {
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t.Errorf("%s %s %s", err, dirs, testCases)
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} else {
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sort.Strings(dirs)
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for i := range dirs {
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if dirs[i] != testCases[i] {
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t.Errorf("%s != %s", dirs[i], testCases[i])
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}
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}
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}
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}
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func TestNames(t *testing.T) {
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// Tests that all names are without the root directory.
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fs, _ := setup(t)
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expected := "file"
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fd, err := fs.Create(expected)
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if err != nil {
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t.Error(err)
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}
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defer fd.Close()
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if fd.Name() != expected {
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t.Errorf("incorrect %s != %s", fd.Name(), expected)
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}
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if stat, err := fd.Stat(); err != nil || stat.Name() != expected {
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t.Errorf("incorrect %s != %s (%v)", stat.Name(), expected, err)
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}
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if err := fs.Mkdir("dir", 0777); err != nil {
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t.Error(err)
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}
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expected = filepath.Join("dir", "file")
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fd, err = fs.Create(expected)
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if err != nil {
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t.Error(err)
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}
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defer fd.Close()
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if fd.Name() != expected {
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t.Errorf("incorrect %s != %s", fd.Name(), expected)
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}
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// os.fd.Stat() returns just base, so do we.
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if stat, err := fd.Stat(); err != nil || stat.Name() != filepath.Base(expected) {
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t.Errorf("incorrect %s != %s (%v)", stat.Name(), filepath.Base(expected), err)
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}
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}
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func TestGlob(t *testing.T) {
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// Tests that all names are without the root directory.
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fs, _ := setup(t)
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for _, dirToCreate := range []string{
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filepath.Join("a", "test", "b"),
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filepath.Join("a", "best", "b"),
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filepath.Join("a", "best", "c"),
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} {
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if err := fs.MkdirAll(dirToCreate, 0777); err != nil {
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t.Error(err)
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}
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}
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testCases := []struct {
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pattern string
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matches []string
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}{
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{
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filepath.Join("a", "?est", "?"),
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[]string{
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filepath.Join("a", "test", "b"),
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filepath.Join("a", "best", "b"),
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filepath.Join("a", "best", "c"),
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},
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},
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{
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filepath.Join("a", "?est", "b"),
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[]string{
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filepath.Join("a", "test", "b"),
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filepath.Join("a", "best", "b"),
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},
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},
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{
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filepath.Join("a", "best", "?"),
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[]string{
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filepath.Join("a", "best", "b"),
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filepath.Join("a", "best", "c"),
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},
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},
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}
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for _, testCase := range testCases {
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results, err := fs.Glob(testCase.pattern)
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sort.Strings(results)
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sort.Strings(testCase.matches)
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if err != nil {
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t.Error(err)
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}
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if len(results) != len(testCase.matches) {
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t.Errorf("result count mismatch")
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}
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for i := range testCase.matches {
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if results[i] != testCase.matches[i] {
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t.Errorf("%s != %s", results[i], testCase.matches[i])
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}
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}
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}
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}
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func TestUsage(t *testing.T) {
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fs, _ := setup(t)
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usage, err := fs.Usage(".")
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if err != nil {
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if build.IsNetBSD || build.IsOpenBSD || build.IsSolaris || build.IsIllumos {
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t.Skip()
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}
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t.Errorf("Unexpected error: %s", err)
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}
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if usage.Free < 1 {
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t.Error("Disk is full?", usage.Free)
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}
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}
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func TestRooted(t *testing.T) {
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type testcase struct {
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root string
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rel string
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joined string
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ok bool
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}
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cases := []testcase{
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// Valid cases
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{"foo", "bar", "foo/bar", true},
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{"foo", "/bar", "foo/bar", true},
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{"foo/", "bar", "foo/bar", true},
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{"foo/", "/bar", "foo/bar", true},
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{"baz/foo", "bar", "baz/foo/bar", true},
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{"baz/foo", "/bar", "baz/foo/bar", true},
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{"baz/foo/", "bar", "baz/foo/bar", true},
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{"baz/foo/", "/bar", "baz/foo/bar", true},
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{"foo", "bar/baz", "foo/bar/baz", true},
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{"foo", "/bar/baz", "foo/bar/baz", true},
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{"foo/", "bar/baz", "foo/bar/baz", true},
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{"foo/", "/bar/baz", "foo/bar/baz", true},
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{"baz/foo", "bar/baz", "baz/foo/bar/baz", true},
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{"baz/foo", "/bar/baz", "baz/foo/bar/baz", true},
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{"baz/foo/", "bar/baz", "baz/foo/bar/baz", true},
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{"baz/foo/", "/bar/baz", "baz/foo/bar/baz", true},
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// Not escape attempts, but oddly formatted relative paths.
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{"foo", "", "foo", true},
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{"foo", "/", "foo", true},
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{"foo", "/..", "foo", true},
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{"foo", "./bar", "foo/bar", true},
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{"foo/", "", "foo", true},
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{"foo/", "/", "foo", true},
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{"foo/", "/..", "foo", true},
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{"foo/", "./bar", "foo/bar", true},
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{"baz/foo", "./bar", "baz/foo/bar", true},
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{"foo", "./bar/baz", "foo/bar/baz", true},
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{"baz/foo", "./bar/baz", "baz/foo/bar/baz", true},
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{"baz/foo", "bar/../baz", "baz/foo/baz", true},
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{"baz/foo", "/bar/../baz", "baz/foo/baz", true},
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{"baz/foo", "./bar/../baz", "baz/foo/baz", true},
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// Results in an allowed path, but does it by probing. Disallowed.
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{"foo", "../foo", "", false},
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{"foo", "../foo/bar", "", false},
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{"baz/foo", "../foo/bar", "", false},
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{"baz/foo", "../../baz/foo/bar", "", false},
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{"baz/foo", "bar/../../foo/bar", "", false},
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{"baz/foo", "bar/../../../baz/foo/bar", "", false},
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// Escape attempts.
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{"foo", "..", "", false},
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{"foo", "../", "", false},
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{"foo", "../bar", "", false},
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{"foo", "../foobar", "", false},
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{"foo/", "../bar", "", false},
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{"foo/", "../foobar", "", false},
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{"baz/foo", "../bar", "", false},
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{"baz/foo", "../foobar", "", false},
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{"baz/foo/", "../bar", "", false},
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{"baz/foo/", "../foobar", "", false},
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{"baz/foo/", "bar/../../quux/baz", "", false},
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// Empty root is a misconfiguration.
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{"", "/foo", "", false},
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{"", "foo", "", false},
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{"", ".", "", false},
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{"", "..", "", false},
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{"", "/", "", false},
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{"", "", "", false},
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// Root=/ is valid, and things should be verified as usual.
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{"/", "foo", "/foo", true},
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{"/", "/foo", "/foo", true},
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{"/", "../foo", "", false},
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{"/", "..", "", false},
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{"/", "/", "/", true},
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{"/", "", "/", true},
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// special case for filesystems to be able to MkdirAll('.') for example
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{"/", ".", "/", true},
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}
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if build.IsWindows {
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extraCases := []testcase{
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{`c:\`, `foo`, `c:\foo`, true},
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{`\\?\c:\`, `foo`, `\\?\c:\foo`, true},
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{`c:\`, `\foo`, `c:\foo`, true},
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{`\\?\c:\`, `\foo`, `\\?\c:\foo`, true},
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{`c:\`, `\\foo`, ``, false},
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{`c:\`, ``, `c:\`, true},
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{`c:\`, `\`, `c:\`, true},
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{`\\?\c:\`, `\\foo`, ``, false},
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{`\\?\c:\`, ``, `\\?\c:\`, true},
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{`\\?\c:\`, `\`, `\\?\c:\`, true},
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{`\\?\c:\test`, `.`, `\\?\c:\test`, true},
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{`c:\test`, `.`, `c:\test`, true},
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{`\\?\c:\test`, `/`, `\\?\c:\test`, true},
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{`c:\test`, ``, `c:\test`, true},
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// makes no sense, but will be treated simply as a bad filename
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{`c:\foo`, `d:\bar`, `c:\foo\d:\bar`, true},
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// special case for filesystems to be able to MkdirAll('.') for example
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{`c:\`, `.`, `c:\`, true},
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{`\\?\c:\`, `.`, `\\?\c:\`, true},
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}
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for _, tc := range cases {
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extraCases = append(extraCases,
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// Add case where root is backslashed, rel is forward slashed
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testcase{
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root: filepath.FromSlash(tc.root),
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rel: tc.rel,
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joined: tc.joined,
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ok: tc.ok,
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},
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// and the opposite
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testcase{
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root: tc.root,
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rel: filepath.FromSlash(tc.rel),
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joined: tc.joined,
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ok: tc.ok,
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},
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// and both backslashed
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testcase{
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root: filepath.FromSlash(tc.root),
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rel: filepath.FromSlash(tc.rel),
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joined: tc.joined,
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ok: tc.ok,
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},
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)
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}
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cases = append(cases, extraCases...)
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}
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for _, tc := range cases {
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fs := BasicFilesystem{root: tc.root}
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res, err := fs.rooted(tc.rel)
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if tc.ok {
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if err != nil {
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t.Errorf("Unexpected error for rooted(%q, %q): %v", tc.root, tc.rel, err)
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continue
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}
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exp := filepath.FromSlash(tc.joined)
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if res != exp {
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t.Errorf("Unexpected result for rooted(%q, %q): %q != expected %q", tc.root, tc.rel, res, exp)
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}
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} else if err == nil {
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t.Errorf("Unexpected pass for rooted(%q, %q) => %q", tc.root, tc.rel, res)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestNewBasicFilesystem(t *testing.T) {
|
|
if build.IsWindows {
|
|
t.Skip("non-windows root paths")
|
|
}
|
|
|
|
currentDir, err := filepath.Abs(".")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
testCases := []struct {
|
|
input string
|
|
expectedRoot string
|
|
expectedURI string
|
|
}{
|
|
{"/foo/bar/baz", "/foo/bar/baz", "/foo/bar/baz"},
|
|
{"/foo/bar/baz/", "/foo/bar/baz", "/foo/bar/baz"},
|
|
{"", currentDir, currentDir},
|
|
{".", currentDir, currentDir},
|
|
{"/", "/", "/"},
|
|
}
|
|
|
|
for _, testCase := range testCases {
|
|
fs := newBasicFilesystem(testCase.input)
|
|
if fs.root != testCase.expectedRoot {
|
|
t.Errorf("root %q != %q", fs.root, testCase.expectedRoot)
|
|
}
|
|
if fs.URI() != testCase.expectedURI {
|
|
t.Errorf("uri %q != %q", fs.URI(), testCase.expectedURI)
|
|
}
|
|
}
|
|
|
|
fs := newBasicFilesystem("relative/path")
|
|
if fs.root == "relative/path" || !strings.HasPrefix(fs.root, string(PathSeparator)) {
|
|
t.Errorf(`newBasicFilesystem("relative/path").root == %q, expected absolutification`, fs.root)
|
|
}
|
|
}
|
|
|
|
func TestRel(t *testing.T) {
|
|
testCases := []struct {
|
|
root string
|
|
abs string
|
|
expectedRel string
|
|
}{
|
|
{"/", "/", ""},
|
|
{"/", "/test", "test"},
|
|
{"/", "/Test", "Test"},
|
|
{"/Test", "/Test/test", "test"},
|
|
}
|
|
if build.IsWindows {
|
|
for i := range testCases {
|
|
testCases[i].root = filepath.FromSlash(testCases[i].root)
|
|
testCases[i].abs = filepath.FromSlash(testCases[i].abs)
|
|
testCases[i].expectedRel = filepath.FromSlash(testCases[i].expectedRel)
|
|
}
|
|
}
|
|
|
|
for _, tc := range testCases {
|
|
if res := rel(tc.abs, tc.root); res != tc.expectedRel {
|
|
t.Errorf(`rel("%v", "%v") == "%v", expected "%v"`, tc.abs, tc.root, res, tc.expectedRel)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestXattr(t *testing.T) {
|
|
tfs, _ := setup(t)
|
|
if err := tfs.Mkdir("/test", 0755); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
xattrSize := func() int { return 20 + rand.Intn(20) }
|
|
|
|
// Create a set of random attributes that we will set and read back
|
|
var attrs []protocol.Xattr
|
|
for i := 0; i < 10; i++ {
|
|
key := fmt.Sprintf("user.test-%d", i)
|
|
value := make([]byte, xattrSize())
|
|
rand.Read(value)
|
|
attrs = append(attrs, protocol.Xattr{
|
|
Name: key,
|
|
Value: value,
|
|
})
|
|
}
|
|
|
|
// Set the xattrs, read them back and compare
|
|
if err := tfs.SetXattr("/test", attrs, noopXattrFilter{}); errors.Is(err, ErrXattrsNotSupported) {
|
|
t.Skip("xattrs not supported")
|
|
} else if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
res, err := tfs.GetXattr("/test", noopXattrFilter{})
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if len(res) != len(attrs) {
|
|
t.Fatalf("length of returned xattrs does not match (%d != %d)", len(res), len(attrs))
|
|
}
|
|
for i, xa := range res {
|
|
if xa.Name != attrs[i].Name {
|
|
t.Errorf("xattr name %q != %q", xa.Name, attrs[i].Name)
|
|
}
|
|
if !bytes.Equal(xa.Value, attrs[i].Value) {
|
|
t.Errorf("xattr value %q != %q", xa.Value, attrs[i].Value)
|
|
}
|
|
}
|
|
|
|
// Remove a couple, change a couple, and add another couple of
|
|
// attributes. Replacing the xattrs again should work.
|
|
attrs = attrs[2:]
|
|
attrs[1].Value = make([]byte, xattrSize())
|
|
rand.Read(attrs[1].Value)
|
|
attrs[3].Value = make([]byte, xattrSize())
|
|
rand.Read(attrs[3].Value)
|
|
for i := 10; i < 12; i++ {
|
|
key := fmt.Sprintf("user.test-%d", i)
|
|
value := make([]byte, xattrSize())
|
|
rand.Read(value)
|
|
attrs = append(attrs, protocol.Xattr{
|
|
Name: key,
|
|
Value: value,
|
|
})
|
|
}
|
|
sort.Slice(attrs, func(i, j int) bool { return attrs[i].Name < attrs[j].Name })
|
|
|
|
// Set the xattrs, read them back and compare
|
|
if err := tfs.SetXattr("/test", attrs, noopXattrFilter{}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
res, err = tfs.GetXattr("/test", noopXattrFilter{})
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if len(res) != len(attrs) {
|
|
t.Fatalf("length of returned xattrs does not match (%d != %d)", len(res), len(attrs))
|
|
}
|
|
for i, xa := range res {
|
|
if xa.Name != attrs[i].Name {
|
|
t.Errorf("xattr name %q != %q", xa.Name, attrs[i].Name)
|
|
}
|
|
if !bytes.Equal(xa.Value, attrs[i].Value) {
|
|
t.Errorf("xattr value %q != %q", xa.Value, attrs[i].Value)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestBasicWalkSkipSymlink(t *testing.T) {
|
|
_, dir := setup(t)
|
|
testWalkSkipSymlink(t, FilesystemTypeBasic, dir)
|
|
}
|
|
|
|
func TestWalkTraverseDirJunct(t *testing.T) {
|
|
_, dir := setup(t)
|
|
testWalkTraverseDirJunct(t, FilesystemTypeBasic, dir)
|
|
}
|
|
|
|
func TestWalkInfiniteRecursion(t *testing.T) {
|
|
_, dir := setup(t)
|
|
testWalkInfiniteRecursion(t, FilesystemTypeBasic, dir)
|
|
}
|
|
|
|
type noopXattrFilter struct{}
|
|
|
|
func (noopXattrFilter) Permit(string) bool { return true }
|
|
func (noopXattrFilter) GetMaxSingleEntrySize() int { return 0 }
|
|
func (noopXattrFilter) GetMaxTotalSize() int { return 0 }
|