Unwrap errors before comparing them

Unwrap errors before directly comparing them with errors defined by the
storage and image libraries.

Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>

3 files changed, 7 insertions, 7 deletions

diff --git a/libpod/container_internal.go b/libpod/container_internal.go
index e7f541c52..a7ac23f73 100644
--- a/libpod/container_internal.go
+++ b/libpod/container_internal.go
@@ -533,7 +533,7 @@ func (c *Container) teardownStorage() error {
 		// error - we wanted it gone, it is already gone.
 		// Potentially another tool using containers/storage already
 		// removed it?
-		if err == storage.ErrNotAContainer || err == storage.ErrContainerUnknown {
+		if errors.Cause(err) == storage.ErrNotAContainer || errors.Cause(err) == storage.ErrContainerUnknown {
 			logrus.Warnf("Storage for container %s already removed", c.ID())
 			return nil
 		}
diff --git a/libpod/runtime_cstorage.go b/libpod/runtime_cstorage.go
index 47a91c881..2d523a7d2 100644
--- a/libpod/runtime_cstorage.go
+++ b/libpod/runtime_cstorage.go
@@ -68,7 +68,7 @@ func (r *Runtime) RemoveStorageContainer(idOrName string, force bool) error {
 func (r *Runtime) removeStorageContainer(idOrName string, force bool) error {
 	targetID, err := r.store.Lookup(idOrName)
 	if err != nil {
-		if err == storage.ErrLayerUnknown {
+		if errors.Cause(err) == storage.ErrLayerUnknown {
 			return errors.Wrapf(define.ErrNoSuchCtr, "no container with ID or name %q found", idOrName)
 		}
 		return errors.Wrapf(err, "error looking up container %q", idOrName)
@@ -78,7 +78,7 @@ func (r *Runtime) removeStorageContainer(idOrName string, force bool) error {
 	// So we can still error here.
 	ctr, err := r.store.Container(targetID)
 	if err != nil {
-		if err == storage.ErrContainerUnknown {
+		if errors.Cause(err) == storage.ErrContainerUnknown {
 			return errors.Wrapf(define.ErrNoSuchCtr, "%q does not refer to a container", idOrName)
 		}
 		return errors.Wrapf(err, "error retrieving container %q", idOrName)
@@ -96,7 +96,7 @@ func (r *Runtime) removeStorageContainer(idOrName string, force bool) error {
 	if !force {
 		timesMounted, err := r.store.Mounted(ctr.ID)
 		if err != nil {
-			if err == storage.ErrContainerUnknown {
+			if errors.Cause(err) == storage.ErrContainerUnknown {
 				// Container was removed from under us.
 				// It's gone, so don't bother erroring.
 				logrus.Warnf("Storage for container %s already removed", ctr.ID)
@@ -109,7 +109,7 @@ func (r *Runtime) removeStorageContainer(idOrName string, force bool) error {
 		}
 	} else {
 		if _, err := r.store.Unmount(ctr.ID, true); err != nil {
-			if err == storage.ErrContainerUnknown {
+			if errors.Cause(err) == storage.ErrContainerUnknown {
 				// Container again gone, no error
 				logrus.Warnf("Storage for container %s already removed", ctr.ID)
 				return nil
@@ -119,7 +119,7 @@ func (r *Runtime) removeStorageContainer(idOrName string, force bool) error {
 	}
 
 	if err := r.store.DeleteContainer(ctr.ID); err != nil {
-		if err == storage.ErrContainerUnknown {
+		if errors.Cause(err) == storage.ErrContainerUnknown {
 			// Container again gone, no error
 			logrus.Warnf("Storage for container %s already removed", ctr.ID)
 			return nil
diff --git a/libpod/runtime_img.go b/libpod/runtime_img.go
index 8cc501629..35c0cdfb9 100644
--- a/libpod/runtime_img.go
+++ b/libpod/runtime_img.go
@@ -69,7 +69,7 @@ func (r *Runtime) RemoveImage(ctx context.Context, img *image.Image, force bool)
 		// the image. we figure out which repotag the user is trying to refer
 		// to and untag it.
 		repoName, err := img.MatchRepoTag(img.InputName)
-		if hasChildren && err == image.ErrRepoTagNotFound {
+		if hasChildren && errors.Cause(err) == image.ErrRepoTagNotFound {
 			return "", errors.Errorf("unable to delete %q (cannot be forced) - image has dependent child images", img.ID())
 		}
 		if err != nil {