github.com/endocode/docker@v1.4.2-0.20160113120958-46eb4700391e/image/rootfs_unix.go (about)

     1  // +build !windows
     2  
     3  package image
     4  
     5  import "github.com/docker/docker/layer"
     6  
     7  // RootFS describes images root filesystem
     8  // This is currently a placeholder that only supports layers. In the future
     9  // this can be made into a interface that supports different implementations.
    10  type RootFS struct {
    11  	Type    string         `json:"type"`
    12  	DiffIDs []layer.DiffID `json:"diff_ids,omitempty"`
    13  }
    14  
    15  // ChainID returns the ChainID for the top layer in RootFS.
    16  func (r *RootFS) ChainID() layer.ChainID {
    17  	return layer.CreateChainID(r.DiffIDs)
    18  }
    19  
    20  // NewRootFS returns empty RootFS struct
    21  func NewRootFS() *RootFS {
    22  	return &RootFS{Type: "layers"}
    23  }