Add support for listing read/only and read/write images

When removing --all images prune images only attempt to remove read/write images,
ignore read/only images

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/cmd/podman/imagefilters/filters.go b/cmd/podman/imagefilters/filters.go
index aa5776599..0b08314ce 100644
--- a/cmd/podman/imagefilters/filters.go
+++ b/cmd/podman/imagefilters/filters.go
@@ -46,6 +46,16 @@ func DanglingFilter(danglingImages bool) ResultFilter {
 	}
 }
 
+// ReadOnlyFilter allows you to filter images based on read/only and read/write
+func ReadOnlyFilter(readOnly bool) ResultFilter {
+	return func(i *adapter.ContainerImage) bool {
+		if readOnly {
+			return i.IsReadOnly()
+		}
+		return !i.IsReadOnly()
+	}
+}
+
 // LabelFilter allows you to filter by images labels key and/or value
 func LabelFilter(ctx context.Context, labelfilter string) ResultFilter {
 	// We need to handle both label=key and label=key=value