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52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
//go:build linux || freebsd
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package images
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import (
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"context"
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"github.com/containerd/log"
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"github.com/docker/docker/daemon/container"
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"github.com/docker/docker/image"
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)
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// GetLayerFolders returns the layer folders from an image RootFS
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func (i *ImageService) GetLayerFolders(img *image.Image, rwLayer container.RWLayer, containerID string) ([]string, error) {
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// Windows specific
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panic("not implemented")
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}
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// GetContainerLayerSize returns the real size & virtual size of the container.
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func (i *ImageService) GetContainerLayerSize(ctx context.Context, containerID string) (int64, int64, error) {
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var (
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sizeRw, sizeRootfs int64
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err error
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)
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// Safe to index by runtime.GOOS as Unix hosts don't support multiple
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// container operating systems.
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rwlayer, err := i.layerStore.GetRWLayer(containerID)
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if err != nil {
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log.G(ctx).Errorf("Failed to compute size of container rootfs %v: %v", containerID, err)
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return sizeRw, sizeRootfs, nil
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}
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defer i.layerStore.ReleaseRWLayer(rwlayer)
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sizeRw, err = rwlayer.Size()
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if err != nil {
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log.G(ctx).Errorf("Driver %s couldn't return diff size of container %s: %s",
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i.layerStore.DriverName(), containerID, err)
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// FIXME: GetSize should return an error. Not changing it now in case
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// there is a side-effect.
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sizeRw = -1
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}
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if parent := rwlayer.Parent(); parent != nil {
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sizeRootfs = parent.Size()
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if sizeRw != -1 {
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sizeRootfs += sizeRw
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}
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}
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return sizeRw, sizeRootfs, nil
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}
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