docker: github.com/docker/docker/daemon/graphdriver/fuse-overlayfs Index | Files

package fuseoverlayfs

import "github.com/docker/docker/daemon/graphdriver/fuse-overlayfs"

Index

Package Files

fuseoverlayfs.go

func Init Uses

❖
func Init(home string, options []string, uidMaps, gidMaps []idtools.IDMap) (graphdriver.Driver, error)

Init returns the naive diff driver for fuse-overlayfs. If fuse-overlayfs is not supported on the host, the error graphdriver.ErrNotSupported is returned.

type Driver Uses

❖
type Driver struct {
    // contains filtered or unexported fields
}

Driver contains information about the home directory and the list of active mounts that are created using this driver.

func (*Driver) ApplyDiff Uses

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func (d *Driver) ApplyDiff(id string, parent string, diff io.Reader) (size int64, err error)

ApplyDiff applies the new layer into a root

func (*Driver) Changes Uses

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func (d *Driver) Changes(id, parent string) ([]archive.Change, error)

Changes produces a list of changes between the specified layer and its parent layer. If parent is "", then all changes will be ADD changes.

func (*Driver) Cleanup Uses

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func (d *Driver) Cleanup() error

Cleanup any state created by overlay which should be cleaned when daemon is being shutdown. For now, we just have to unmount the bind mounted we had created.

func (*Driver) Create Uses

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func (d *Driver) Create(id, parent string, opts *graphdriver.CreateOpts) (retErr error)

Create is used to create the upper, lower, and merge directories required for overlay fs for a given id. The parent filesystem is used to configure these directories for the overlay.

func (*Driver) CreateReadWrite Uses

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func (d *Driver) CreateReadWrite(id, parent string, opts *graphdriver.CreateOpts) error

CreateReadWrite creates a layer that is writable for use as a container file system.

func (*Driver) Diff Uses

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func (d *Driver) Diff(id, parent string) (io.ReadCloser, error)

Diff produces an archive of the changes between the specified layer and its parent layer which may be "".

func (*Driver) DiffSize Uses

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func (d *Driver) DiffSize(id, parent string) (size int64, err error)

DiffSize calculates the changes between the specified id and its parent and returns the size in bytes of the changes relative to its base filesystem directory.

func (*Driver) Exists Uses

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func (d *Driver) Exists(id string) bool

Exists checks to see if the id is already mounted.

func (*Driver) Get Uses

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func (d *Driver) Get(id, mountLabel string) (_ containerfs.ContainerFS, retErr error)

Get creates and mounts the required file system for the given id and returns the mount path.

func (*Driver) GetMetadata Uses

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func (d *Driver) GetMetadata(id string) (map[string]string, error)

GetMetadata returns metadata about the overlay driver such as the LowerDir, UpperDir, WorkDir, and MergeDir used to store data.

func (*Driver) Put Uses

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func (d *Driver) Put(id string) error

Put unmounts the mount path created for the give id. It also removes the 'merged' directory to force the kernel to unmount the overlay mount in other namespaces.

func (*Driver) Remove Uses

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func (d *Driver) Remove(id string) error

Remove cleans the directories that are created for this id.

func (*Driver) Status Uses

❖
func (d *Driver) Status() [][2]string

Status returns current driver information in a two dimensional string array.

func (*Driver) String Uses

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func (d *Driver) String() string

Package fuseoverlayfs imports 26 packages (graph) and is imported by 1 packages. Updated 2020-12-24. Refresh now. Tools for package owners.