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-rw-r--r--runsc/fsgofer/fsgofer_test.go576
1 files changed, 576 insertions, 0 deletions
diff --git a/runsc/fsgofer/fsgofer_test.go b/runsc/fsgofer/fsgofer_test.go
new file mode 100644
index 000000000..7d834d596
--- /dev/null
+++ b/runsc/fsgofer/fsgofer_test.go
@@ -0,0 +1,576 @@
+// Copyright 2018 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package fsgofer
+
+import (
+ "fmt"
+ "io/ioutil"
+ "os"
+ "syscall"
+ "testing"
+
+ "gvisor.googlesource.com/gvisor/pkg/log"
+ "gvisor.googlesource.com/gvisor/pkg/p9"
+)
+
+func init() {
+ log.SetLevel(log.Debug)
+
+ allConfs = append(allConfs, rwConfs...)
+ allConfs = append(allConfs, roConfs...)
+}
+
+var (
+ allTypes = []fileType{regular, directory, symlink}
+
+ // allConfs is set in init() above.
+ allConfs []Config
+
+ rwConfs = []Config{
+ Config{ROMount: false, LazyOpenForWrite: false},
+ Config{ROMount: false, LazyOpenForWrite: true},
+ }
+ roConfs = []Config{
+ Config{ROMount: true, LazyOpenForWrite: false},
+ Config{ROMount: true, LazyOpenForWrite: true},
+ }
+)
+
+type state struct {
+ root *localFile
+ file *localFile
+ conf Config
+ ft fileType
+}
+
+func (s state) String() string {
+ return fmt.Sprintf("lazyopen(%v)-%v", s.conf.LazyOpenForWrite, s.ft)
+}
+
+func runAll(t *testing.T, test func(*testing.T, state)) {
+ runCustom(t, allTypes, allConfs, test)
+}
+
+func runCustom(t *testing.T, types []fileType, confs []Config, test func(*testing.T, state)) {
+ for _, c := range confs {
+ t.Logf("Config: %+v", c)
+
+ for _, ft := range types {
+ t.Logf("File type: %v", ft)
+
+ path, name, err := setup(ft)
+ if err != nil {
+ t.Fatalf("%v", err)
+ }
+ defer os.RemoveAll(path)
+
+ a := NewAttachPoint(path, c)
+ root, err := a.Attach("/")
+ if err != nil {
+ t.Fatalf("Attach(%q) failed, err: %v", "/", err)
+ }
+
+ _, file, err := root.Walk([]string{name})
+ if err != nil {
+ root.Close()
+ t.Fatalf("root.Walk({%q}) failed, err: %v", "symlink", err)
+ }
+
+ st := state{root: root.(*localFile), file: file.(*localFile), conf: c, ft: ft}
+ test(t, st)
+ file.Close()
+ root.Close()
+ }
+ }
+}
+
+func setup(ft fileType) (string, string, error) {
+ path, err := ioutil.TempDir("", "root-")
+ if err != nil {
+ return "", "", fmt.Errorf("ioutil.TempDir() failed, err: %v", err)
+ }
+
+ // First attach with writable configuiration to setup tree.
+ a := NewAttachPoint(path, Config{})
+ root, err := a.Attach("/")
+ if err != nil {
+ return "", "", fmt.Errorf("Attach(%q) failed, err: %v", "/", err)
+ }
+ defer root.Close()
+
+ var name string
+ switch ft {
+ case regular:
+ name = "file"
+ _, f, _, _, err := root.Create(name, p9.ReadWrite, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
+ if err != nil {
+ return "", "", fmt.Errorf("createFile(root, %q) failed, err: %v", "test", err)
+ }
+ defer f.Close()
+ case directory:
+ name = "dir"
+ if _, err := root.Mkdir(name, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
+ return "", "", fmt.Errorf("root.MkDir(%q) failed, err: %v", name, err)
+ }
+ case symlink:
+ name = "symlink"
+ if _, err := root.Symlink("/some/target", name, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
+ return "", "", fmt.Errorf("root.Symlink(%q) failed, err: %v", name, err)
+ }
+ default:
+ panic(fmt.Sprintf("unknown file type %v", ft))
+ }
+ return path, name, nil
+}
+
+func createFile(dir *localFile, name string) (*localFile, error) {
+ _, f, _, _, err := dir.Create(name, p9.ReadWrite, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
+ if err != nil {
+ return nil, err
+ }
+ return f.(*localFile), nil
+}
+
+func TestReadWrite(t *testing.T) {
+ runCustom(t, []fileType{directory}, rwConfs, func(t *testing.T, s state) {
+ child, err := createFile(s.file, "test")
+ if err != nil {
+ t.Fatalf("%v: createFile() failed, err: %v", s, err)
+ }
+ defer child.Close()
+ b := []byte("foobar")
+ w, err := child.WriteAt(b, 0)
+ if err != nil {
+ t.Fatalf("%v: Write() failed, err: %v", s, err)
+ }
+ if w != len(b) {
+ t.Fatalf("%v: Write() was partial, got: %d, expected: %d", s, w, len(b))
+ }
+ for _, test := range []struct {
+ flags p9.OpenFlags
+ read bool
+ write bool
+ }{
+ {flags: p9.ReadOnly, read: true, write: false},
+ {flags: p9.WriteOnly, read: false, write: true},
+ {flags: p9.ReadWrite, read: true, write: true},
+ } {
+ _, l, err := s.file.Walk([]string{"test"})
+ if err != nil {
+ t.Fatalf("%v: Walk(%s) failed, err: %v", s, "test", err)
+ }
+ if _, _, _, err := l.Open(test.flags); err != nil {
+ t.Fatalf("%v: Open(%v) failed, err: %v", s, test.flags, err)
+ }
+
+ w, err = l.WriteAt(b, 0)
+ if test.write {
+ if err != nil {
+ t.Fatalf("%v, %v: WriteAt() failed, err: %v", s, test.flags, err)
+ }
+ if w != len(b) {
+ t.Fatalf("%v, %v: WriteAt() was partial, got: %d, expected: %d", s, test.flags, w, len(b))
+ }
+ } else {
+ if err == nil {
+ t.Fatalf("%v, %v: WriteAt() should have failed", s, test.flags)
+ }
+ }
+
+ rBuf := make([]byte, len(b))
+ r, err := l.ReadAt(rBuf, 0)
+ if test.read {
+ if err != nil {
+ t.Fatalf("%v, %v: ReadAt() failed, err: %v", s, test.flags, err)
+ }
+ if r != len(rBuf) {
+ t.Fatalf("%v, %v: ReadAt() was partial, got: %d, expected: %d", s, test.flags, r, len(rBuf))
+ }
+ if string(rBuf) != "foobar" {
+ t.Fatalf("%v, %v: ReadAt() wrong data, got: %s, expected: %s", s, test.flags, string(rBuf), "foobar")
+ }
+ } else {
+ if err == nil {
+ t.Fatalf("%v, %v: ReadAt() should have failed", s, test.flags)
+ }
+ }
+ }
+ })
+}
+
+func TestCreate(t *testing.T) {
+ runCustom(t, []fileType{directory}, rwConfs, func(t *testing.T, s state) {
+ for i, test := range []struct {
+ flags p9.OpenFlags
+ read bool
+ }{
+ {flags: p9.WriteOnly, read: false},
+ {flags: p9.ReadWrite, read: true},
+ } {
+ _, l, _, _, err := s.file.Create(fmt.Sprintf("test-%d", i), test.flags, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
+ if err != nil {
+ t.Fatalf("%v, %v: WriteAt() failed, err: %v", s, test.flags, err)
+ }
+
+ b := []byte("foobar")
+ w, err := l.WriteAt(b, 0)
+ if err != nil {
+ t.Fatalf("%v, %v: WriteAt() failed, err: %v", s, test.flags, err)
+ }
+ if w != len(b) {
+ t.Fatalf("%v, %v: WriteAt() was partial, got: %d, expected: %d", s, test.flags, w, len(b))
+ }
+
+ rBuf := make([]byte, len(b))
+ r, err := l.ReadAt(rBuf, 0)
+ if test.read {
+ if err != nil {
+ t.Fatalf("%v, %v: ReadAt() failed, err: %v", s, test.flags, err)
+ }
+ if r != len(rBuf) {
+ t.Fatalf("%v, %v: ReadAt() was partial, got: %d, expected: %d", s, test.flags, r, len(rBuf))
+ }
+ if string(rBuf) != "foobar" {
+ t.Fatalf("%v, %v: ReadAt() wrong data, got: %s, expected: %s", s, test.flags, string(rBuf), "foobar")
+ }
+ } else {
+ if err == nil {
+ t.Fatalf("%v, %v: ReadAt() should have failed", s, test.flags)
+ }
+ }
+ }
+ })
+}
+
+func TestUnopened(t *testing.T) {
+ runCustom(t, []fileType{regular}, allConfs, func(t *testing.T, s state) {
+ b := []byte("foobar")
+ if _, err := s.file.WriteAt(b, 0); err != syscall.EBADF {
+ t.Errorf("%v: WriteAt() should have failed, got: %v, expected: syscall.EBADF", s, err)
+ }
+ if _, err := s.file.ReadAt(b, 0); err != syscall.EBADF {
+ t.Errorf("%v: ReadAt() should have failed, got: %v, expected: syscall.EBADF", s, err)
+ }
+ if _, err := s.file.Readdir(0, 100); err != syscall.EBADF {
+ t.Errorf("%v: Readdir() should have failed, got: %v, expected: syscall.EBADF", s, err)
+ }
+ if err := s.file.FSync(); err != syscall.EBADF {
+ t.Errorf("%v: FSync() should have failed, got: %v, expected: syscall.EBADF", s, err)
+ }
+ })
+}
+
+func SetGetAttr(l *localFile, valid p9.SetAttrMask, attr p9.SetAttr) (p9.Attr, error) {
+ if err := l.SetAttr(valid, attr); err != nil {
+ return p9.Attr{}, err
+ }
+ _, _, a, err := l.GetAttr(p9.AttrMask{})
+ if err != nil {
+ return p9.Attr{}, err
+ }
+ return a, nil
+}
+
+func TestSetAttrPerm(t *testing.T) {
+ runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
+ valid := p9.SetAttrMask{Permissions: true}
+ attr := p9.SetAttr{Permissions: 0777}
+ got, err := SetGetAttr(s.file, valid, attr)
+ if s.ft == symlink {
+ if err == nil {
+ t.Fatalf("%v: SetGetAttr(valid, %v) should have failed", s, attr.Permissions)
+ }
+ } else {
+ if err != nil {
+ t.Fatalf("%v: SetGetAttr(valid, %v) failed, err: %v", s, attr.Permissions, err)
+ }
+ if got.Mode.Permissions() != attr.Permissions {
+ t.Errorf("%v: wrong permission, got: %v, expected: %v", s, got.Mode.Permissions(), attr.Permissions)
+ }
+ }
+ })
+}
+
+func TestSetAttrSize(t *testing.T) {
+ runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
+ for _, size := range []uint64{1024, 0, 1024 * 1024} {
+ valid := p9.SetAttrMask{Size: true}
+ attr := p9.SetAttr{Size: size}
+ got, err := SetGetAttr(s.file, valid, attr)
+ if s.ft == symlink || s.ft == directory {
+ if err == nil {
+ t.Fatalf("%v: SetGetAttr(valid, %v) should have failed", s, attr.Permissions)
+ }
+ // Run for one size only, they will all fail the same way.
+ return
+ }
+ if err != nil {
+ t.Fatalf("%v: SetGetAttr(valid, %v) failed, err: %v", s, attr.Size, err)
+ }
+ if got.Size != size {
+ t.Errorf("%v: wrong size, got: %v, expected: %v", s, got.Size, size)
+ }
+ }
+ })
+}
+
+func TestSetAttrTime(t *testing.T) {
+ runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
+ valid := p9.SetAttrMask{ATime: true, ATimeNotSystemTime: true}
+ attr := p9.SetAttr{ATimeSeconds: 123, ATimeNanoSeconds: 456}
+ got, err := SetGetAttr(s.file, valid, attr)
+ if err != nil {
+ t.Fatalf("%v: SetGetAttr(valid, %v:%v) failed, err: %v", s, attr.ATimeSeconds, attr.ATimeNanoSeconds, err)
+ }
+ if got.ATimeSeconds != 123 {
+ t.Errorf("%v: wrong ATimeSeconds, got: %v, expected: %v", s, got.ATimeSeconds, 123)
+ }
+ if got.ATimeNanoSeconds != 456 {
+ t.Errorf("%v: wrong ATimeNanoSeconds, got: %v, expected: %v", s, got.ATimeNanoSeconds, 456)
+ }
+
+ valid = p9.SetAttrMask{MTime: true, MTimeNotSystemTime: true}
+ attr = p9.SetAttr{MTimeSeconds: 789, MTimeNanoSeconds: 012}
+ got, err = SetGetAttr(s.file, valid, attr)
+ if err != nil {
+ t.Fatalf("%v: SetGetAttr(valid, %v:%v) failed, err: %v", s, attr.MTimeSeconds, attr.MTimeNanoSeconds, err)
+ }
+ if got.MTimeSeconds != 789 {
+ t.Errorf("%v: wrong MTimeSeconds, got: %v, expected: %v", s, got.MTimeSeconds, 789)
+ }
+ if got.MTimeNanoSeconds != 012 {
+ t.Errorf("%v: wrong MTimeNanoSeconds, got: %v, expected: %v", s, got.MTimeNanoSeconds, 012)
+ }
+ })
+}
+
+func TestSetAttrOwner(t *testing.T) {
+ if os.Getuid() != 0 {
+ t.Skipf("SetAttr(owner) test requires CAP_CHOWN, running as %d", os.Getuid())
+ }
+
+ runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
+ newUID := os.Getuid() + 1
+ valid := p9.SetAttrMask{UID: true}
+ attr := p9.SetAttr{UID: p9.UID(newUID)}
+ got, err := SetGetAttr(s.file, valid, attr)
+ if err != nil {
+ t.Fatalf("%v: SetGetAttr(valid, %v) failed, err: %v", s, attr.UID, err)
+ }
+ if got.UID != p9.UID(newUID) {
+ t.Errorf("%v: wrong uid, got: %v, expected: %v", s, got.UID, newUID)
+ }
+ })
+}
+
+func TestLink(t *testing.T) {
+ if os.Getuid() != 0 {
+ t.Skipf("Link test requires CAP_DAC_READ_SEARCH, running as %d", os.Getuid())
+ }
+ runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
+ const dirName = "linkdir"
+ const linkFile = "link"
+ if _, err := s.root.Mkdir(dirName, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
+ t.Fatalf("%v: MkDir(%s) failed, err: %v", s, dirName, err)
+ }
+ _, dir, err := s.root.Walk([]string{dirName})
+ if err != nil {
+ t.Fatalf("%v: Walk({%s}) failed, err: %v", s, dirName, err)
+ }
+
+ err = dir.Link(s.file, linkFile)
+ if s.ft == directory {
+ if err != syscall.EPERM {
+ t.Errorf("%v: Link(target, %s) should have failed, got: %v, expected: syscall.EPERM", s, linkFile, err)
+ }
+ return
+ }
+ if err != nil {
+ t.Errorf("%v: Link(target, %s) failed, err: %v", s, linkFile, err)
+ }
+ })
+}
+
+func TestROMountChecks(t *testing.T) {
+ runCustom(t, allTypes, roConfs, func(t *testing.T, s state) {
+ if _, _, _, _, err := s.file.Create("..", p9.ReadWrite, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != syscall.EBADF {
+ t.Errorf("%v: Create() should have failed, got: %v, expected: syscall.EBADF", s, err)
+ }
+ if _, err := s.file.Mkdir("..", 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != syscall.EBADF {
+ t.Errorf("%v: MkDir() should have failed, got: %v, expected: syscall.EBADF", s, err)
+ }
+ if err := s.file.Rename(s.file, ".."); err != syscall.EBADF {
+ t.Errorf("%v: Rename() should have failed, got: %v, expected: syscall.EBADF", s, err)
+ }
+ if _, err := s.file.Symlink("some_place", "..", p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != syscall.EBADF {
+ t.Errorf("%v: Symlink() should have failed, got: %v, expected: syscall.EBADF", s, err)
+ }
+ if err := s.file.UnlinkAt("..", 0); err != syscall.EBADF {
+ t.Errorf("%v: UnlinkAt() should have failed, got: %v, expected: syscall.EBADF", s, err)
+ }
+ if err := s.file.Link(s.file, ".."); err != syscall.EBADF {
+ t.Errorf("%v: Link() should have failed, got: %v, expected: syscall.EBADF", s, err)
+ }
+
+ valid := p9.SetAttrMask{Size: true}
+ attr := p9.SetAttr{Size: 0}
+ if err := s.file.SetAttr(valid, attr); err != syscall.EBADF {
+ t.Errorf("%v: SetAttr() should have failed, got: %v, expected: syscall.EBADF", s, err)
+ }
+ })
+}
+
+func TestInvalidName(t *testing.T) {
+ runCustom(t, []fileType{regular}, rwConfs, func(t *testing.T, s state) {
+ if _, _, _, _, err := s.file.Create("..", p9.ReadWrite, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != syscall.EINVAL {
+ t.Errorf("%v: Create() should have failed, got: %v, expected: syscall.EINVAL", s, err)
+ }
+ if _, _, err := s.file.Walk([]string{".."}); err != syscall.EINVAL {
+ t.Errorf("%v: Walk() should have failed, got: %v, expected: syscall.EINVAL", s, err)
+ }
+ if _, err := s.file.Mkdir("..", 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != syscall.EINVAL {
+ t.Errorf("%v: MkDir() should have failed, got: %v, expected: syscall.EINVAL", s, err)
+ }
+ if err := s.file.Rename(s.file, ".."); err != syscall.EINVAL {
+ t.Errorf("%v: Rename() should have failed, got: %v, expected: syscall.EINVAL", s, err)
+ }
+ if _, err := s.file.Symlink("some_place", "..", p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != syscall.EINVAL {
+ t.Errorf("%v: Symlink() should have failed, got: %v, expected: syscall.EINVAL", s, err)
+ }
+ if err := s.file.UnlinkAt("..", 0); err != syscall.EINVAL {
+ t.Errorf("%v: UnlinkAt() should have failed, got: %v, expected: syscall.EINVAL", s, err)
+ }
+ if err := s.file.Link(s.file, ".."); err != syscall.EINVAL {
+ t.Errorf("%v: Link() should have failed, got: %v, expected: syscall.EINVAL", s, err)
+ }
+ })
+}
+
+func TestIsNameValid(t *testing.T) {
+ valid := []string{
+ "name",
+ "123",
+ "!@#$%^&*()",
+ ".name",
+ "..name",
+ "...",
+ }
+ for _, s := range valid {
+ if got := isNameValid(s); !got {
+ t.Errorf("isNameValid(%s) failed, got: %v, expected: true", s, got)
+ }
+ }
+ invalid := []string{
+ ".",
+ "..",
+ "name/name",
+ "/name",
+ "name/",
+ }
+ for _, s := range invalid {
+ if got := isNameValid(s); got {
+ t.Errorf("isNameValid(%s) failed, got: %v, expected: false", s, got)
+ }
+ }
+}
+
+func TestWalkNotFound(t *testing.T) {
+ runCustom(t, []fileType{directory}, allConfs, func(t *testing.T, s state) {
+ if _, _, err := s.file.Walk([]string{"nobody-here"}); err != syscall.ENOENT {
+ t.Errorf("%v: Walk(%q) should have failed, got: %v, expected: syscall.ENOENT", s, "nobody-here", err)
+ }
+ })
+}
+
+func TestWalkDup(t *testing.T) {
+ runAll(t, func(t *testing.T, s state) {
+ _, dup, err := s.file.Walk([]string{})
+ if err != nil {
+ t.Fatalf("%v: Walk(nil) failed, err: %v", s, err)
+ }
+ // Check that 'dup' is usable.
+ if _, _, _, err := dup.GetAttr(p9.AttrMask{}); err != nil {
+ t.Errorf("%v: GetAttr() failed, err: %v", s, err)
+ }
+ })
+}
+
+func TestReaddir(t *testing.T) {
+ runCustom(t, []fileType{directory}, rwConfs, func(t *testing.T, s state) {
+ name := "dir"
+ if _, err := s.file.Mkdir(name, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
+ t.Fatalf("%v: MkDir(%s) failed, err: %v", s, name, err)
+ }
+ name = "symlink"
+ if _, err := s.file.Symlink("/some/target", name, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
+ t.Fatalf("%v: Symlink(%q) failed, err: %v", s, name, err)
+ }
+ name = "file"
+ _, f, _, _, err := s.file.Create(name, p9.ReadWrite, 0555, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
+ if err != nil {
+ t.Fatalf("%v: createFile(root, %q) failed, err: %v", s, name, err)
+ }
+ f.Close()
+
+ if _, _, _, err := s.file.Open(p9.ReadOnly); err != nil {
+ t.Fatalf("%v: Open(ReadOnly) failed, err: %v", s, err)
+ }
+
+ dirents, err := s.file.Readdir(0, 10)
+ if err != nil {
+ t.Fatalf("%v: Readdir(0, 10) failed, err: %v", s, err)
+ }
+ if len(dirents) != 3 {
+ t.Fatalf("%v: Readdir(0, 10) wrong number of items, got: %v, expected: 3", s, len(dirents))
+ }
+ var dir, symlink, file bool
+ for _, d := range dirents {
+ switch d.Name {
+ case "dir":
+ if d.Type != p9.TypeDir {
+ t.Errorf("%v: dirent.Type got: %v, expected: %v", s, d.Type, p9.TypeDir)
+ }
+ dir = true
+ case "symlink":
+ if d.Type != p9.TypeSymlink {
+ t.Errorf("%v: dirent.Type got: %v, expected: %v", s, d.Type, p9.TypeSymlink)
+ }
+ symlink = true
+ case "file":
+ if d.Type != p9.TypeRegular {
+ t.Errorf("%v: dirent.Type got: %v, expected: %v", s, d.Type, p9.TypeRegular)
+ }
+ file = true
+ default:
+ t.Errorf("%v: dirent.Name got: %v", s, d.Name)
+ }
+
+ _, f, err := s.file.Walk([]string{d.Name})
+ if err != nil {
+ t.Fatalf("%v: Walk({%s}) failed, err: %v", s, d.Name, err)
+ }
+ _, _, a, err := f.GetAttr(p9.AttrMask{})
+ if err != nil {
+ t.Fatalf("%v: GetAttr() failed, err: %v", s, err)
+ }
+ if d.Type != a.Mode.QIDType() {
+ t.Errorf("%v: dirent.Type different than GetAttr().Mode.QIDType(), got: %v, expected: %v", s, d.Type, a.Mode.QIDType())
+ }
+ }
+ if !dir || !symlink || !file {
+ t.Errorf("%v: Readdir(0, 10) wrong files returned, dir: %v, symlink: %v, file: %v", s, dir, symlink, file)
+ }
+ })
+}