package libpod import ( "os" "path/filepath" "github.com/containers/podman/v3/libpod/define" "github.com/pkg/errors" ) // Creates a new volume func newVolume(runtime *Runtime) *Volume { volume := new(Volume) volume.config = new(VolumeConfig) volume.state = new(VolumeState) volume.runtime = runtime volume.config.Labels = make(map[string]string) volume.config.Options = make(map[string]string) volume.state.NeedsCopyUp = true volume.state.NeedsChown = true return volume } // teardownStorage deletes the volume from volumePath func (v *Volume) teardownStorage() error { if v.UsesVolumeDriver() { return nil } // TODO: Should this be converted to use v.config.MountPoint? return os.RemoveAll(filepath.Join(v.runtime.config.Engine.VolumePath, v.Name())) } // Volumes with options set, or a filesystem type, or a device to mount need to // be mounted and unmounted. func (v *Volume) needsMount() bool { // Non-local driver always needs mount if v.UsesVolumeDriver() { return true } // Commit 28138dafcc added the UID and GID options to this map // However we should only mount when options other than uid and gid are set. // see https://github.com/containers/podman/issues/10620 index := 0 if _, ok := v.config.Options["UID"]; ok { index++ } if _, ok := v.config.Options["GID"]; ok { index++ } if _, ok := v.config.Options["SIZE"]; ok { index++ } // when uid or gid is set there is also the "o" option // set so we have to ignore this one as well if index > 0 { index++ } // Local driver with options other than uid,gid needs mount return len(v.config.Options) > index } // update() updates the volume state from the DB. func (v *Volume) update() error { if err := v.runtime.state.UpdateVolume(v); err != nil { return err } if !v.valid { return define.ErrVolumeRemoved } return nil } // save() saves the volume state to the DB func (v *Volume) save() error { return v.runtime.state.SaveVolume(v) } // Refresh volume state after a restart. func (v *Volume) refresh() error { lock, err := v.runtime.lockManager.AllocateAndRetrieveLock(v.config.LockID) if err != nil { return errors.Wrapf(err, "acquiring lock %d for volume %s", v.config.LockID, v.Name()) } v.lock = lock return nil }