1
0
Fork 0
mirror of https://github.com/moby/moby.git synced 2022-11-09 12:21:53 -05:00
moby--moby/daemon/create_windows.go

84 lines
2.9 KiB
Go
Raw Normal View History

package daemon
import (
"fmt"
"github.com/docker/docker/image"
"github.com/docker/docker/pkg/stringid"
"github.com/docker/docker/runconfig"
"github.com/docker/docker/volume"
)
// createContainerPlatformSpecificSettings performs platform specific container create functionality
func (daemon *Daemon) createContainerPlatformSpecificSettings(container *Container, config *runconfig.Config, hostConfig *runconfig.HostConfig, img *image.Image) error {
for spec := range config.Volumes {
mp, err := volume.ParseMountSpec(spec, hostConfig.VolumeDriver)
if err != nil {
return fmt.Errorf("Unrecognised volume spec: %v", err)
}
// If the mountpoint doesn't have a name, generate one.
if len(mp.Name) == 0 {
mp.Name = stringid.GenerateNonCryptoID()
}
// Skip volumes for which we already have something mounted on that
// destination because of a --volume-from.
if container.isDestinationMounted(mp.Destination) {
continue
}
volumeDriver := hostConfig.VolumeDriver
if mp.Destination != "" && img != nil {
if _, ok := img.ContainerConfig.Volumes[mp.Destination]; ok {
// check for whether bind is not specified and then set to local
if _, ok := container.MountPoints[mp.Destination]; !ok {
volumeDriver = volume.DefaultDriverName
}
}
}
// Create the volume in the volume driver. If it doesn't exist,
// a new one will be created.
v, err := daemon.createVolume(mp.Name, volumeDriver, nil)
if err != nil {
return err
}
// FIXME Windows: This code block is present in the Linux version and
// allows the contents to be copied to the container FS prior to it
// being started. However, the function utilises the FollowSymLinkInScope
// path which does not cope with Windows volume-style file paths. There
// is a seperate effort to resolve this (@swernli), so this processing
// is deferred for now. A case where this would be useful is when
// a dockerfile includes a VOLUME statement, but something is created
// in that directory during the dockerfile processing. What this means
// on Windows for TP4 is that in that scenario, the contents will not
// copied, but that's (somewhat) OK as HCS will bomb out soon after
// at it doesn't support mapped directories which have contents in the
// destination path anyway.
//
// Example for repro later:
// FROM windowsservercore
// RUN mkdir c:\myvol
// RUN copy c:\windows\system32\ntdll.dll c:\myvol
// VOLUME "c:\myvol"
//
// Then
// docker build -t vol .
// docker run -it --rm vol cmd <-- This is where HCS will error out.
//
// // never attempt to copy existing content in a container FS to a shared volume
// if v.DriverName() == volume.DefaultDriverName {
// if err := container.copyImagePathContent(v, mp.Destination); err != nil {
// return err
// }
// }
// Add it to container.MountPoints
container.addMountPointWithVolume(mp.Destination, v, mp.RW)
}
return nil
}