github.com/rawahars/moby@v24.0.4+incompatible/daemon/create_windows.go (about) 1 package daemon // import "github.com/docker/docker/daemon" 2 3 import ( 4 "context" 5 "fmt" 6 7 containertypes "github.com/docker/docker/api/types/container" 8 "github.com/docker/docker/container" 9 volumemounts "github.com/docker/docker/volume/mounts" 10 volumeopts "github.com/docker/docker/volume/service/opts" 11 ) 12 13 // createContainerOSSpecificSettings performs host-OS specific container create functionality 14 func (daemon *Daemon) createContainerOSSpecificSettings(container *container.Container, config *containertypes.Config, hostConfig *containertypes.HostConfig) error { 15 if containertypes.Isolation.IsDefault(hostConfig.Isolation) { 16 // Make sure the host config has the default daemon isolation if not specified by caller. 17 hostConfig.Isolation = daemon.defaultIsolation 18 } 19 parser := volumemounts.NewParser() 20 for spec := range config.Volumes { 21 22 mp, err := parser.ParseMountRaw(spec, hostConfig.VolumeDriver) 23 if err != nil { 24 return fmt.Errorf("Unrecognised volume spec: %v", err) 25 } 26 27 // Skip volumes for which we already have something mounted on that 28 // destination because of a --volume-from. 29 if container.IsDestinationMounted(mp.Destination) { 30 continue 31 } 32 33 volumeDriver := hostConfig.VolumeDriver 34 35 // Create the volume in the volume driver. If it doesn't exist, 36 // a new one will be created. 37 v, err := daemon.volumes.Create(context.TODO(), "", volumeDriver, volumeopts.WithCreateReference(container.ID)) 38 if err != nil { 39 return err 40 } 41 42 // FIXME Windows: This code block is present in the Linux version and 43 // allows the contents to be copied to the container FS prior to it 44 // being started. However, the function utilizes the FollowSymLinkInScope 45 // path which does not cope with Windows volume-style file paths. There 46 // is a separate effort to resolve this (@swernli), so this processing 47 // is deferred for now. A case where this would be useful is when 48 // a dockerfile includes a VOLUME statement, but something is created 49 // in that directory during the dockerfile processing. What this means 50 // on Windows for TP5 is that in that scenario, the contents will not 51 // copied, but that's (somewhat) OK as HCS will bomb out soon after 52 // at it doesn't support mapped directories which have contents in the 53 // destination path anyway. 54 // 55 // Example for repro later: 56 // FROM windowsservercore 57 // RUN mkdir c:\myvol 58 // RUN copy c:\windows\system32\ntdll.dll c:\myvol 59 // VOLUME "c:\myvol" 60 // 61 // Then 62 // docker build -t vol . 63 // docker run -it --rm vol cmd <-- This is where HCS will error out. 64 // 65 // // never attempt to copy existing content in a container FS to a shared volume 66 // if v.DriverName() == volume.DefaultDriverName { 67 // if err := container.CopyImagePathContent(v, mp.Destination); err != nil { 68 // return err 69 // } 70 // } 71 72 // Add it to container.MountPoints 73 container.AddMountPointWithVolume(mp.Destination, &volumeWrapper{v: v, s: daemon.volumes}, mp.RW) 74 } 75 return nil 76 }