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- // Copyright (C) 2016 The Syncthing Authors.
- //
- // This Source Code Form is subject to the terms of the Mozilla Public
- // License, v. 2.0. If a copy of the MPL was not distributed with this file,
- // You can obtain one at https://mozilla.org/MPL/2.0/.
- package osutil_test
- import (
- "path/filepath"
- "testing"
- "github.com/syncthing/syncthing/lib/fs"
- "github.com/syncthing/syncthing/lib/osutil"
- "github.com/syncthing/syncthing/lib/rand"
- )
- func TestTraversesSymlink(t *testing.T) {
- testFs := fs.NewFilesystem(fs.FilesystemTypeFake, rand.String(32))
- testFs.MkdirAll("a/b/c", 0o755)
- if err := testFs.CreateSymlink(filepath.Join("a", "b"), filepath.Join("a", "l")); err != nil {
- t.Fatal(err)
- }
- // a/l -> b, so a/l/c should resolve by normal stat
- info, err := testFs.Lstat("a/l/c")
- if err != nil {
- t.Fatal("unexpected error", err)
- }
- if !info.IsDir() {
- t.Fatal("error in setup, a/l/c should be a directory")
- }
- cases := []struct {
- name string
- traverses bool
- }{
- // Exist
- {".", false},
- {"a", false},
- {"a/b", false},
- {"a/b/c", false},
- // Don't exist
- {"x", false},
- {"a/x", false},
- {"a/b/x", false},
- {"a/x/c", false},
- // Symlink or behind symlink
- {"a/l", true},
- {"a/l/c", true},
- // Non-existing behind a symlink
- {"a/l/x", true},
- }
- for _, tc := range cases {
- if res := osutil.TraversesSymlink(testFs, tc.name); tc.traverses == (res == nil) {
- t.Errorf("TraversesSymlink(%q) = %v, should be %v", tc.name, res, tc.traverses)
- }
- }
- }
- func TestIssue4875(t *testing.T) {
- testFsPath := rand.String(32)
- testFs := fs.NewFilesystem(fs.FilesystemTypeFake, testFsPath)
- testFs.MkdirAll(filepath.Join("a", "b", "c"), 0o755)
- if err := testFs.CreateSymlink(filepath.Join("a", "b"), filepath.Join("a", "l")); err != nil {
- t.Fatal(err)
- }
- // a/l -> b, so a/l/c should resolve by normal stat
- info, err := testFs.Lstat("a/l/c")
- if err != nil {
- t.Fatal("unexpected error", err)
- }
- if !info.IsDir() {
- t.Fatal("error in setup, a/l/c should be a directory")
- }
- testFs = fs.NewFilesystem(fs.FilesystemTypeFake, filepath.Join(testFsPath, "a/l"))
- if err := osutil.TraversesSymlink(testFs, "."); err != nil {
- t.Error(`TraversesSymlink on filesystem with symlink at root returned error for ".":`, err)
- }
- }
- var traversesSymlinkResult error
- func BenchmarkTraversesSymlink(b *testing.B) {
- fs := fs.NewFilesystem(fs.FilesystemTypeFake, rand.String(32))
- fs.MkdirAll("a/b/c", 0o755)
- for i := 0; i < b.N; i++ {
- traversesSymlinkResult = osutil.TraversesSymlink(fs, "a/b/c")
- }
- b.ReportAllocs()
- }
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