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moby--moby/image/rootfs_unix.go

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// +build !windows
package image
import "github.com/docker/docker/layer"
// RootFS describes images root filesystem
// This is currently a placeholder that only supports layers. In the future
// this can be made into a interface that supports different implementations.
type RootFS struct {
Type string `json:"type"`
DiffIDs []layer.DiffID `json:"diff_ids,omitempty"`
}
// ChainID returns the ChainID for the top layer in RootFS.
func (r *RootFS) ChainID() layer.ChainID {
return layer.CreateChainID(r.DiffIDs)
}
// NewRootFS returns empty RootFS struct
func NewRootFS() *RootFS {
return &RootFS{Type: "layers"}
}