| // +build linux freebsd |
| |
| // Package local provides the default implementation for volumes. It |
| // is used to mount data volume containers and directories local to |
| // the host server. |
| package local // import "github.com/docker/docker/volume/local" |
| |
| import ( |
| "fmt" |
| "net" |
| "os" |
| "path/filepath" |
| "strings" |
| "syscall" |
| "time" |
| |
| "github.com/pkg/errors" |
| |
| "github.com/docker/docker/pkg/mount" |
| ) |
| |
| var ( |
| oldVfsDir = filepath.Join("vfs", "dir") |
| |
| validOpts = map[string]bool{ |
| "type": true, // specify the filesystem type for mount, e.g. nfs |
| "o": true, // generic mount options |
| "device": true, // device to mount from |
| } |
| ) |
| |
| type optsConfig struct { |
| MountType string |
| MountOpts string |
| MountDevice string |
| } |
| |
| func (o *optsConfig) String() string { |
| return fmt.Sprintf("type='%s' device='%s' o='%s'", o.MountType, o.MountDevice, o.MountOpts) |
| } |
| |
| // scopedPath verifies that the path where the volume is located |
| // is under Docker's root and the valid local paths. |
| func (r *Root) scopedPath(realPath string) bool { |
| // Volumes path for Docker version >= 1.7 |
| if strings.HasPrefix(realPath, filepath.Join(r.scope, volumesPathName)) && realPath != filepath.Join(r.scope, volumesPathName) { |
| return true |
| } |
| |
| // Volumes path for Docker version < 1.7 |
| if strings.HasPrefix(realPath, filepath.Join(r.scope, oldVfsDir)) { |
| return true |
| } |
| |
| return false |
| } |
| |
| func setOpts(v *localVolume, opts map[string]string) error { |
| if len(opts) == 0 { |
| return nil |
| } |
| if err := validateOpts(opts); err != nil { |
| return err |
| } |
| |
| v.opts = &optsConfig{ |
| MountType: opts["type"], |
| MountOpts: opts["o"], |
| MountDevice: opts["device"], |
| } |
| return nil |
| } |
| |
| func (v *localVolume) mount() error { |
| if v.opts.MountDevice == "" { |
| return fmt.Errorf("missing device in volume options") |
| } |
| mountOpts := v.opts.MountOpts |
| if v.opts.MountType == "nfs" { |
| if addrValue := getAddress(v.opts.MountOpts); addrValue != "" && net.ParseIP(addrValue).To4() == nil { |
| ipAddr, err := net.ResolveIPAddr("ip", addrValue) |
| if err != nil { |
| return errors.Wrapf(err, "error resolving passed in nfs address") |
| } |
| mountOpts = strings.Replace(mountOpts, "addr="+addrValue, "addr="+ipAddr.String(), 1) |
| } |
| } |
| err := mount.Mount(v.opts.MountDevice, v.path, v.opts.MountType, mountOpts) |
| return errors.Wrapf(err, "error while mounting volume with options: %s", v.opts) |
| } |
| |
| func (v *localVolume) CreatedAt() (time.Time, error) { |
| fileInfo, err := os.Stat(v.path) |
| if err != nil { |
| return time.Time{}, err |
| } |
| sec, nsec := fileInfo.Sys().(*syscall.Stat_t).Ctim.Unix() |
| return time.Unix(sec, nsec), nil |
| } |