CreateChainID returns ID for a layerDigest slice.

IsEmpty returns true if the layer is an EmptyLayer.

LogReleaseMetadata logs a metadata array, uses this to ensure consistent logging for release metadata.

NewStoreFromOptions creates a new Store instance.

ReleaseAndLog releases the provided layer from the given layer store, logging any error and release metadata.

DigestSHA256EmptyTar is the canonical sha256 digest of empty tar file - (1024 NULL bytes).

EmptyLayer is a layer that corresponds to empty tar.

ErrLayerDoesNotExist is used when an operation is attempted on a layer which does not exist.

ErrLayerNotRetained is used when a release is attempted on a layer which is not retained.

ErrMaxDepthExceeded is used when a layer is attempted to be created which would result in a layer depth greater than the 125 max.

ErrMountDoesNotExist is used when an operation is attempted on a mount layer which does not exist.

ErrMountNameConflict is used when a mount is attempted to be created but there is already a mount with the name used for creation.

CreateRWLayerOpts contains optional arguments to be passed to CreateRWLayer.

Metadata holds information about a read-only layer.

StoreOptions are the options used to create a new Store instance.

DescribableStore represents a layer store capable of storing descriptors for layers.

Layer represents a read-only layer.

RWLayer represents a layer which is read and writable.

Store represents a backend for managing both read-only and read-write layers.

TarStreamer represents an object which may have its contents exported as a tar stream.

ChainID is the content-addressable ID of a layer.

DiffID is the hash of an individual layer tar.

MountInit is a function to initialize a writable mount.