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package images
import (
"context"
"fmt"
"runtime"
"github.com/docker/docker/container"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
// Mount sets container.BaseFS
// (is it not set coming in? why is it unset?)
func (i *ImageService) Mount(ctx context.Context, container *container.Container) error {
if container.RWLayer == nil {
return errors.New("RWLayer of container " + container.ID + " is unexpectedly nil")
}
dir, err := container.RWLayer.Mount(container.GetMountLabel())
if err != nil {
return err
}
logrus.WithField("container", container.ID).Debugf("container mounted via layerStore: %v", dir)
if container.BaseFS != "" && container.BaseFS != dir {
// The mount path reported by the graph driver should always be trusted on Windows, since the
// volume path for a given mounted layer may change over time. This should only be an error
// on non-Windows operating systems.
if runtime.GOOS != "windows" {
i.Unmount(ctx, container)
return fmt.Errorf("Error: driver %s is returning inconsistent paths for container %s ('%s' then '%s')",
i.StorageDriver(), container.ID, container.BaseFS, dir)
}
}
container.BaseFS = dir // TODO: combine these fields
return nil
}
// Unmount unsets the container base filesystem
func (i *ImageService) Unmount(ctx context.Context, container *container.Container) error {
if container.RWLayer == nil {
return errors.New("RWLayer of container " + container.ID + " is unexpectedly nil")
}
if err := container.RWLayer.Unmount(); err != nil {
logrus.WithField("container", container.ID).WithError(err).Error("error unmounting container")
return err
}
return nil
}
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