diff options
Diffstat (limited to 'libpod')
-rw-r--r-- | libpod/image/image.go | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/libpod/image/image.go b/libpod/image/image.go index 14ffad4bf..8b2aa318f 100644 --- a/libpod/image/image.go +++ b/libpod/image/image.go @@ -1593,6 +1593,63 @@ func (i *Image) newImageEvent(status events.Status) { } } +// Mount mounts a image's filesystem on the host +// The path where the image has been mounted is returned +func (i *Image) Mount(options []string, mountLabel string) (string, error) { + defer i.newImageEvent(events.Mount) + return i.mount(options, mountLabel) +} + +// Unmount unmounts a image's filesystem on the host +func (i *Image) Unmount(force bool) error { + defer i.newImageEvent(events.Unmount) + return i.unmount(force) +} + +// Mounted returns whether the image is mounted and the path it is mounted +// at (if it is mounted). +// If the image is not mounted, no error is returned, and the mountpoint +// will be set to "". +func (i *Image) Mounted() (bool, string, error) { + mountedTimes, err := i.imageruntime.store.Mounted(i.TopLayer()) + if err != nil { + return false, "", err + } + + if mountedTimes > 0 { + layer, err := i.imageruntime.store.Layer(i.TopLayer()) + if err != nil { + return false, "", err + } + return true, layer.MountPoint, nil + } + + return false, "", nil +} + +// mount mounts the container's root filesystem +func (i *Image) mount(options []string, mountLabel string) (string, error) { + mountPoint, err := i.imageruntime.store.MountImage(i.ID(), options, mountLabel) + if err != nil { + return "", errors.Wrapf(err, "error mounting storage for image %s", i.ID()) + } + mountPoint, err = filepath.EvalSymlinks(mountPoint) + if err != nil { + return "", errors.Wrapf(err, "error resolving storage path for image %s", i.ID()) + } + return mountPoint, nil +} + +// unmount unmounts the image's root filesystem +func (i *Image) unmount(force bool) error { + // Also unmount storage + if _, err := i.imageruntime.store.UnmountImage(i.ID(), force); err != nil { + return errors.Wrapf(err, "error unmounting image %s root filesystem", i.ID()) + } + + return nil +} + // LayerInfo keeps information of single layer type LayerInfo struct { // Layer ID |