| /* |
| Copyright 2017 The Kubernetes Authors. |
| |
| 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 flexvolume |
| |
| import ( |
| "fmt" |
| "os" |
| |
| "k8s.io/apimachinery/pkg/types" |
| "k8s.io/klog" |
| "k8s.io/kubernetes/pkg/volume" |
| "k8s.io/kubernetes/pkg/volume/util" |
| ) |
| |
| type flexVolumeDetacher struct { |
| plugin *flexVolumeAttachablePlugin |
| } |
| |
| var _ volume.Detacher = &flexVolumeDetacher{} |
| |
| var _ volume.DeviceUnmounter = &flexVolumeDetacher{} |
| |
| // Detach is part of the volume.Detacher interface. |
| func (d *flexVolumeDetacher) Detach(volumeName string, hostName types.NodeName) error { |
| |
| call := d.plugin.NewDriverCall(detachCmd) |
| call.Append(volumeName) |
| call.Append(string(hostName)) |
| |
| _, err := call.Run() |
| if isCmdNotSupportedErr(err) { |
| return (*detacherDefaults)(d).Detach(volumeName, hostName) |
| } |
| return err |
| } |
| |
| // UnmountDevice is part of the volume.Detacher interface. |
| func (d *flexVolumeDetacher) UnmountDevice(deviceMountPath string) error { |
| |
| pathExists, pathErr := util.PathExists(deviceMountPath) |
| if !pathExists { |
| klog.Warningf("Warning: Unmount skipped because path does not exist: %v", deviceMountPath) |
| return nil |
| } |
| if pathErr != nil && !util.IsCorruptedMnt(pathErr) { |
| return fmt.Errorf("Error checking path: %v", pathErr) |
| } |
| |
| notmnt, err := isNotMounted(d.plugin.host.GetMounter(d.plugin.GetPluginName()), deviceMountPath) |
| if err != nil { |
| if util.IsCorruptedMnt(err) { |
| notmnt = false // Corrupted error is assumed to be mounted. |
| } else { |
| return err |
| } |
| } |
| |
| if notmnt { |
| klog.Warningf("Warning: Path: %v already unmounted", deviceMountPath) |
| } else { |
| call := d.plugin.NewDriverCall(unmountDeviceCmd) |
| call.Append(deviceMountPath) |
| |
| _, err := call.Run() |
| if isCmdNotSupportedErr(err) { |
| err = (*detacherDefaults)(d).UnmountDevice(deviceMountPath) |
| } |
| if err != nil { |
| return err |
| } |
| } |
| |
| // Flexvolume driver may remove the directory. Ignore if it does. |
| if pathExists, pathErr := util.PathExists(deviceMountPath); pathErr != nil { |
| return fmt.Errorf("Error checking if path exists: %v", pathErr) |
| } else if !pathExists { |
| return nil |
| } |
| return os.Remove(deviceMountPath) |
| } |