Vendor in container storage

This should add quota support to cri-o

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
This commit is contained in:
Daniel J Walsh 2017-09-26 19:58:51 +00:00
parent e838611fdd
commit 29bd1c79dd
52 changed files with 2751 additions and 1881 deletions

View file

@ -8,7 +8,7 @@ import (
"github.com/containers/storage/drivers"
"github.com/containers/storage/pkg/chrootarchive"
"github.com/containers/storage/pkg/idtools"
"github.com/containers/storage/pkg/system"
"github.com/opencontainers/selinux/go-selinux/label"
)
@ -25,15 +25,11 @@ func init() {
// This sets the home directory for the driver and returns NaiveDiffDriver.
func Init(home string, options []string, uidMaps, gidMaps []idtools.IDMap) (graphdriver.Driver, error) {
d := &Driver{
home: home,
uidMaps: uidMaps,
gidMaps: gidMaps,
home: home,
idMappings: idtools.NewIDMappingsFromMaps(uidMaps, gidMaps),
}
rootUID, rootGID, err := idtools.GetRootUIDGID(uidMaps, gidMaps)
if err != nil {
return nil, err
}
if err := idtools.MkdirAllAs(home, 0700, rootUID, rootGID); err != nil {
rootIDs := d.idMappings.RootPair()
if err := idtools.MkdirAllAndChown(home, 0700, rootIDs); err != nil {
return nil, err
}
return graphdriver.NewNaiveDiffDriver(d, uidMaps, gidMaps), nil
@ -44,9 +40,8 @@ func Init(home string, options []string, uidMaps, gidMaps []idtools.IDMap) (grap
// In order to support layering, files are copied from the parent layer into the new layer. There is no copy-on-write support.
// Driver must be wrapped in NaiveDiffDriver to be used as a graphdriver.Driver
type Driver struct {
home string
uidMaps []idtools.IDMap
gidMaps []idtools.IDMap
home string
idMappings *idtools.IDMappings
}
func (d *Driver) String() string {
@ -70,29 +65,26 @@ func (d *Driver) Cleanup() error {
// CreateReadWrite creates a layer that is writable for use as a container
// file system.
func (d *Driver) CreateReadWrite(id, parent, mountLabel string, storageOpt map[string]string) error {
return d.Create(id, parent, mountLabel, storageOpt)
func (d *Driver) CreateReadWrite(id, parent string, opts *graphdriver.CreateOpts) error {
return d.Create(id, parent, opts)
}
// Create prepares the filesystem for the VFS driver and copies the directory for the given id under the parent.
func (d *Driver) Create(id, parent, mountLabel string, storageOpt map[string]string) error {
if len(storageOpt) != 0 {
func (d *Driver) Create(id, parent string, opts *graphdriver.CreateOpts) error {
if opts != nil && len(opts.StorageOpt) != 0 {
return fmt.Errorf("--storage-opt is not supported for vfs")
}
dir := d.dir(id)
rootUID, rootGID, err := idtools.GetRootUIDGID(d.uidMaps, d.gidMaps)
if err != nil {
rootIDs := d.idMappings.RootPair()
if err := idtools.MkdirAllAndChown(filepath.Dir(dir), 0700, rootIDs); err != nil {
return err
}
if err := idtools.MkdirAllAs(filepath.Dir(dir), 0700, rootUID, rootGID); err != nil {
if err := idtools.MkdirAndChown(dir, 0755, rootIDs); err != nil {
return err
}
if err := idtools.MkdirAs(dir, 0755, rootUID, rootGID); err != nil {
return err
}
opts := []string{"level:s0"}
if _, mountLabel, err := label.InitLabels(opts); err == nil {
labelOpts := []string{"level:s0"}
if _, mountLabel, err := label.InitLabels(labelOpts); err == nil {
label.SetFileLabel(dir, mountLabel)
}
if parent == "" {
@ -102,10 +94,7 @@ func (d *Driver) Create(id, parent, mountLabel string, storageOpt map[string]str
if err != nil {
return fmt.Errorf("%s: %s", parent, err)
}
if err := CopyWithTar(parentDir, dir); err != nil {
return err
}
return nil
return CopyWithTar(parentDir, dir)
}
func (d *Driver) dir(id string) string {
@ -114,10 +103,7 @@ func (d *Driver) dir(id string) string {
// Remove deletes the content from the directory for a given id.
func (d *Driver) Remove(id string) error {
if err := os.RemoveAll(d.dir(id)); err != nil && !os.IsNotExist(err) {
return err
}
return nil
return system.EnsureRemoveAll(d.dir(id))
}
// Get returns the directory for the given id.
@ -146,6 +132,5 @@ func (d *Driver) Exists(id string) bool {
// AdditionalImageStores returns additional image stores supported by the driver
func (d *Driver) AdditionalImageStores() []string {
var imageStores []string
return imageStores
return nil
}