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>
158 lines
3.8 KiB
Go
158 lines
3.8 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 osutil_test
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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"testing"
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"github.com/syncthing/syncthing/lib/fs"
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"github.com/syncthing/syncthing/lib/osutil"
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)
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func TestIsDeleted(t *testing.T) {
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type tc struct {
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path string
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isDel bool
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}
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cases := []tc{
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{"del", true},
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{"del.file", false},
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{filepath.Join("del", "del"), true},
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{"file", false},
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{"linkToFile", false},
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{"linkToDel", false},
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{"linkToDir", false},
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{filepath.Join("linkToDir", "file"), true},
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{filepath.Join("file", "behindFile"), true},
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{"dir", false},
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{"dir.file", false},
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{filepath.Join("dir", "file"), false},
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{filepath.Join("dir", "del"), true},
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{filepath.Join("dir", "del", "del"), true},
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{filepath.Join("del", "del", "del"), true},
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}
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testFs := fs.NewFilesystem(fs.FilesystemTypeBasic, "testdata")
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testFs.MkdirAll("dir", 0777)
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for _, f := range []string{"file", "del.file", "dir.file", filepath.Join("dir", "file")} {
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fd, err := testFs.Create(f)
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if err != nil {
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t.Fatal(err)
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}
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fd.Close()
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}
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if runtime.GOOS != "windows" {
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// Can't create unreadable dir on windows
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testFs.MkdirAll("inacc", 0777)
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if err := testFs.Chmod("inacc", 0000); err == nil {
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if _, err := testFs.Lstat(filepath.Join("inacc", "file")); fs.IsPermission(err) {
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// May fail e.g. if tests are run as root -> just skip
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cases = append(cases, tc{"inacc", false}, tc{filepath.Join("inacc", "file"), false})
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}
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}
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}
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for _, n := range []string{"Dir", "File", "Del"} {
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if err := fs.DebugSymlinkForTestsOnly(testFs, testFs, strings.ToLower(n), "linkTo"+n); err != nil {
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if runtime.GOOS == "windows" {
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t.Skip("Symlinks aren't working")
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}
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t.Fatal(err)
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}
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}
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for _, c := range cases {
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if osutil.IsDeleted(testFs, c.path) != c.isDel {
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t.Errorf("IsDeleted(%v) != %v", c.path, c.isDel)
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}
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}
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testFs.Chmod("inacc", 0777)
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os.RemoveAll("testdata")
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}
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func TestRenameOrCopy(t *testing.T) {
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mustTempDir := func() string {
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t.Helper()
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tmpDir, err := ioutil.TempDir("", "")
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if err != nil {
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t.Fatal(err)
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}
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return tmpDir
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}
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sameFs := fs.NewFilesystem(fs.FilesystemTypeBasic, mustTempDir())
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tests := []struct {
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src fs.Filesystem
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dst fs.Filesystem
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file string
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}{
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{
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src: sameFs,
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dst: sameFs,
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file: "file",
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},
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{
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src: fs.NewFilesystem(fs.FilesystemTypeBasic, mustTempDir()),
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dst: fs.NewFilesystem(fs.FilesystemTypeBasic, mustTempDir()),
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file: "file",
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},
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{
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src: fs.NewFilesystem(fs.FilesystemTypeFake, `fake://fake/?files=1&seed=42`),
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dst: fs.NewFilesystem(fs.FilesystemTypeBasic, mustTempDir()),
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file: osutil.NativeFilename(`05/7a/4d52f284145b9fe8`),
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},
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}
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for _, test := range tests {
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content := test.src.URI()
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if _, err := test.src.Lstat(test.file); err != nil {
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if !fs.IsNotExist(err) {
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t.Fatal(err)
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}
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if fd, err := test.src.Create(test.file); err != nil {
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t.Fatal(err)
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} else {
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if _, err := fd.Write([]byte(test.src.URI())); err != nil {
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t.Fatal(err)
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}
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_ = fd.Close()
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}
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} else {
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fd, err := test.src.Open(test.file)
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if err != nil {
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t.Fatal(err)
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}
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buf, err := ioutil.ReadAll(fd)
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if err != nil {
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t.Fatal(err)
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}
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_ = fd.Close()
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content = string(buf)
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}
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err := osutil.RenameOrCopy(fs.CopyRangeMethodStandard, test.src, test.dst, test.file, "new")
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if err != nil {
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t.Fatal(err)
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}
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if fd, err := test.dst.Open("new"); err != nil {
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t.Fatal(err)
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} else {
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if buf, err := ioutil.ReadAll(fd); err != nil {
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t.Fatal(err)
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} else if string(buf) != content {
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t.Fatalf("expected %s got %s", content, string(buf))
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}
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}
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}
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}
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