func createBase(t *testing.T, driver graphdriver.Driver, name string) {
// We need to be able to set any perms
oldmask := syscall.Umask(0)
defer syscall.Umask(oldmask)
if err := driver.Create(name, ""); err != nil {
t.Fatal(err)
}
dir, err := driver.Get(name, "")
if err != nil {
t.Fatal(err)
}
defer driver.Put(name)
subdir := path.Join(dir, "a subdir")
if err := os.Mkdir(subdir, 0705|os.ModeSticky); err != nil {
t.Fatal(err)
}
if err := os.Chown(subdir, 1, 2); err != nil {
t.Fatal(err)
}
file := path.Join(dir, "a file")
if err := ioutil.WriteFile(file, []byte("Some data"), 0222|os.ModeSetuid); err != nil {
t.Fatal(err)
}
}
func checkManyLayers(drv graphdriver.Driver, layer string, count int) error {
root, err := drv.Get(layer, "")
if err != nil {
return err
}
defer drv.Put(layer)
layerIDBytes, err := ioutil.ReadFile(path.Join(root, "top-id"))
if err != nil {
return err
}
if bytes.Compare(layerIDBytes, []byte(layer)) != 0 {
return fmt.Errorf("mismatched file content %v, expecting %v", layerIDBytes, []byte(layer))
}
for i := count; i > 0; i-- {
layerDir := path.Join(root, fmt.Sprintf("layer-%d", i))
thisLayerIDBytes, err := ioutil.ReadFile(path.Join(layerDir, "layer-id"))
if err != nil {
return err
}
if bytes.Compare(thisLayerIDBytes, layerIDBytes) != 0 {
return fmt.Errorf("mismatched file content %v, expecting %v", thisLayerIDBytes, layerIDBytes)
}
layerIDBytes, err = ioutil.ReadFile(path.Join(layerDir, "parent-id"))
if err != nil {
return err
}
}
return nil
}
func checkManyFiles(drv graphdriver.Driver, layer string, count int, seed int64) error {
root, err := drv.Get(layer, "")
if err != nil {
return err
}
defer drv.Put(layer)
for i := 0; i < count; i += 100 {
dir := path.Join(root, fmt.Sprintf("directory-%d", i))
for j := 0; i+j < count && j < 100; j++ {
file := path.Join(dir, fmt.Sprintf("file-%d", i+j))
fileContent, err := ioutil.ReadFile(file)
if err != nil {
return err
}
content := randomContent(64, seed+int64(i+j))
if bytes.Compare(fileContent, content) != 0 {
return fmt.Errorf("mismatched file content %v, expecting %v", fileContent, content)
}
}
}
return nil
}
func addDirectory(drv graphdriver.Driver, layer, dir string) error {
root, err := drv.Get(layer, "")
if err != nil {
return err
}
defer drv.Put(layer)
return os.MkdirAll(path.Join(root, dir), 0755)
}
func addFile(drv graphdriver.Driver, layer, filename string, content []byte) error {
root, err := drv.Get(layer, "")
if err != nil {
return err
}
defer drv.Put(layer)
return ioutil.WriteFile(path.Join(root, filename), content, 0755)
}
func removeFile(drv graphdriver.Driver, layer, filename string) error {
root, err := drv.Get(layer, "")
if err != nil {
return err
}
defer drv.Put(layer)
return os.Remove(path.Join(root, filename))
}
func removeAll(drv graphdriver.Driver, layer string, names ...string) error {
root, err := drv.Get(layer, "")
if err != nil {
return err
}
defer drv.Put(layer)
for _, filename := range names {
if err := os.RemoveAll(path.Join(root, filename)); err != nil {
return err
}
}
return nil
}
func changeManyFiles(drv graphdriver.Driver, layer string, count int, seed int64) ([]archive.Change, error) {
root, err := drv.Get(layer, "")
if err != nil {
return nil, err
}
defer drv.Put(layer)
changes := []archive.Change{}
for i := 0; i < count; i += 100 {
archiveRoot := fmt.Sprintf("/directory-%d", i)
if err := os.MkdirAll(path.Join(root, archiveRoot), 0755); err != nil {
return nil, err
}
for j := 0; i+j < count && j < 100; j++ {
if j == 0 {
changes = append(changes, archive.Change{
Path: archiveRoot,
Kind: archive.ChangeModify,
})
}
var change archive.Change
switch j % 3 {
// Update file
case 0:
change.Path = path.Join(archiveRoot, fmt.Sprintf("file-%d", i+j))
change.Kind = archive.ChangeModify
if err := ioutil.WriteFile(path.Join(root, change.Path), randomContent(64, seed+int64(i+j)), 0755); err != nil {
return nil, err
}
// Add file
case 1:
change.Path = path.Join(archiveRoot, fmt.Sprintf("file-%d-%d", seed, i+j))
change.Kind = archive.ChangeAdd
if err := ioutil.WriteFile(path.Join(root, change.Path), randomContent(64, seed+int64(i+j)), 0755); err != nil {
return nil, err
}
// Remove file
case 2:
change.Path = path.Join(archiveRoot, fmt.Sprintf("file-%d", i+j))
change.Kind = archive.ChangeDelete
if err := os.Remove(path.Join(root, change.Path)); err != nil {
return nil, err
}
}
changes = append(changes, change)
}
}
return changes, nil
}
func checkFileRemoved(drv graphdriver.Driver, layer, filename string) error {
root, err := drv.Get(layer, "")
if err != nil {
return err
}
defer drv.Put(layer)
if _, err := os.Stat(path.Join(root, filename)); err == nil {
return fmt.Errorf("file still exists: %s", path.Join(root, filename))
} else if !os.IsNotExist(err) {
return err
}
return nil
}
func checkFile(drv graphdriver.Driver, layer, filename string, content []byte) error {
root, err := drv.Get(layer, "")
if err != nil {
return err
}
defer drv.Put(layer)
fileContent, err := ioutil.ReadFile(path.Join(root, filename))
if err != nil {
return err
}
if bytes.Compare(fileContent, content) != 0 {
return fmt.Errorf("mismatched file content %v, expecting %v", fileContent, content)
}
return nil
}
func addFiles(drv graphdriver.Driver, layer string, seed int64) error {
root, err := drv.Get(layer, "")
if err != nil {
return err
}
defer drv.Put(layer)
if err := ioutil.WriteFile(path.Join(root, "file-a"), randomContent(64, seed), 0755); err != nil {
return err
}
if err := os.MkdirAll(path.Join(root, "dir-b"), 0755); err != nil {
return err
}
if err := ioutil.WriteFile(path.Join(root, "dir-b", "file-b"), randomContent(128, seed+1), 0755); err != nil {
return err
}
return ioutil.WriteFile(path.Join(root, "file-c"), randomContent(128*128, seed+2), 0755)
}
func addManyFiles(drv graphdriver.Driver, layer string, count int, seed int64) error {
root, err := drv.Get(layer, "")
if err != nil {
return err
}
defer drv.Put(layer)
for i := 0; i < count; i += 100 {
dir := path.Join(root, fmt.Sprintf("directory-%d", i))
if err := os.MkdirAll(dir, 0755); err != nil {
return err
}
for j := 0; i+j < count && j < 100; j++ {
file := path.Join(dir, fmt.Sprintf("file-%d", i+j))
if err := ioutil.WriteFile(file, randomContent(64, seed+int64(i+j)), 0755); err != nil {
return err
}
}
}
return nil
}
func verifyBase(t *testing.T, driver graphdriver.Driver, name string) {
dir, err := driver.Get(name, "")
if err != nil {
t.Fatal(err)
}
defer driver.Put(name)
subdir := path.Join(dir, "a subdir")
verifyFile(t, subdir, 0705|os.ModeDir|os.ModeSticky, 1, 2)
file := path.Join(dir, "a file")
verifyFile(t, file, 0222|os.ModeSetuid, 0, 0)
fis, err := readDir(dir)
if err != nil {
t.Fatal(err)
}
if len(fis) != 2 {
t.Fatal("Unexpected files in base image")
}
}
func addLayerFiles(drv graphdriver.Driver, layer, parent string, i int) error {
root, err := drv.Get(layer, "")
if err != nil {
return err
}
defer drv.Put(layer)
if err := ioutil.WriteFile(path.Join(root, "top-id"), []byte(layer), 0755); err != nil {
return err
}
layerDir := path.Join(root, fmt.Sprintf("layer-%d", i))
if err := os.MkdirAll(layerDir, 0755); err != nil {
return err
}
if err := ioutil.WriteFile(path.Join(layerDir, "layer-id"), []byte(layer), 0755); err != nil {
return err
}
if err := ioutil.WriteFile(path.Join(layerDir, "parent-id"), []byte(parent), 0755); err != nil {
return err
}
return nil
}