c90ec05175
This fix tries to address the issue raised in 28769 where checkpoint name was not checked before passing to containerd. As a result, it was possible to use a special checkpoint name to get outside of the container's directory. This fix add restriction `[a-zA-Z0-9][a-zA-Z0-9_.-]+` (`RestrictedNamePattern`). This is the same as container name restriction. This fix fixes 28769. Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
110 lines
2.6 KiB
Go
110 lines
2.6 KiB
Go
package daemon
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
|
|
"github.com/docker/docker/api/types"
|
|
"github.com/docker/docker/utils"
|
|
)
|
|
|
|
var (
|
|
validCheckpointNameChars = utils.RestrictedNameChars
|
|
validCheckpointNamePattern = utils.RestrictedNamePattern
|
|
)
|
|
|
|
// CheckpointCreate checkpoints the process running in a container with CRIU
|
|
func (daemon *Daemon) CheckpointCreate(name string, config types.CheckpointCreateOptions) error {
|
|
container, err := daemon.GetContainer(name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if !container.IsRunning() {
|
|
return fmt.Errorf("Container %s not running", name)
|
|
}
|
|
|
|
var checkpointDir string
|
|
if config.CheckpointDir != "" {
|
|
checkpointDir = config.CheckpointDir
|
|
} else {
|
|
checkpointDir = container.CheckpointDir()
|
|
}
|
|
|
|
if !validCheckpointNamePattern.MatchString(config.CheckpointID) {
|
|
return fmt.Errorf("Invalid checkpoint ID (%s), only %s are allowed", config.CheckpointID, validCheckpointNameChars)
|
|
}
|
|
|
|
err = daemon.containerd.CreateCheckpoint(container.ID, config.CheckpointID, checkpointDir, config.Exit)
|
|
if err != nil {
|
|
return fmt.Errorf("Cannot checkpoint container %s: %s", name, err)
|
|
}
|
|
|
|
daemon.LogContainerEvent(container, "checkpoint")
|
|
|
|
return nil
|
|
}
|
|
|
|
// CheckpointDelete deletes the specified checkpoint
|
|
func (daemon *Daemon) CheckpointDelete(name string, config types.CheckpointDeleteOptions) error {
|
|
container, err := daemon.GetContainer(name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
var checkpointDir string
|
|
if config.CheckpointDir != "" {
|
|
checkpointDir = config.CheckpointDir
|
|
} else {
|
|
checkpointDir = container.CheckpointDir()
|
|
}
|
|
|
|
return os.RemoveAll(filepath.Join(checkpointDir, config.CheckpointID))
|
|
}
|
|
|
|
// CheckpointList lists all checkpoints of the specified container
|
|
func (daemon *Daemon) CheckpointList(name string, config types.CheckpointListOptions) ([]types.Checkpoint, error) {
|
|
var out []types.Checkpoint
|
|
|
|
container, err := daemon.GetContainer(name)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var checkpointDir string
|
|
if config.CheckpointDir != "" {
|
|
checkpointDir = config.CheckpointDir
|
|
} else {
|
|
checkpointDir = container.CheckpointDir()
|
|
}
|
|
|
|
if err := os.MkdirAll(checkpointDir, 0755); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
dirs, err := ioutil.ReadDir(checkpointDir)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for _, d := range dirs {
|
|
if !d.IsDir() {
|
|
continue
|
|
}
|
|
path := filepath.Join(checkpointDir, d.Name(), "config.json")
|
|
data, err := ioutil.ReadFile(path)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var cpt types.Checkpoint
|
|
if err := json.Unmarshal(data, &cpt); err != nil {
|
|
return nil, err
|
|
}
|
|
out = append(out, cpt)
|
|
}
|
|
|
|
return out, nil
|
|
}
|