diff options
Diffstat (limited to 'libpod/runtime_img.go')
| -rw-r--r-- | libpod/runtime_img.go | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/libpod/runtime_img.go b/libpod/runtime_img.go index 66cf7a4d5..1915a5c4d 100644 --- a/libpod/runtime_img.go +++ b/libpod/runtime_img.go @@ -48,6 +48,27 @@ func (r *Runtime) RemoveContainersForImageCallback(ctx context.Context) libimage } } +// IsExternalContainerCallback returns a callback that be used in `libimage` to +// figure out whether a given container is an external one. A container is +// considered external if it is not present in libpod's database. +func (r *Runtime) IsExternalContainerCallback(_ context.Context) libimage.IsExternalContainerFunc { + // NOTE: pruning external containers is subject to race conditions + // (e.g., when a container gets removed). To address this and similar + // races, pruning had to happen inside c/storage. Containers has to be + // labelled with "podman/libpod" along with callbacks similar to + // libimage. + return func(idOrName string) (bool, error) { + _, err := r.LookupContainer(idOrName) + if err == nil { + return false, nil + } + if errors.Is(err, define.ErrNoSuchCtr) { + return true, nil + } + return false, nil + } +} + // newBuildEvent creates a new event based on completion of a built image func (r *Runtime) newImageBuildCompleteEvent(idOrName string) { e := events.NewEvent(events.Build) |