Module image 

Detecting which backend a container image’s root filesystem is built for.

Functions

defaults_to_composefs_backend 🔒

Whether bootc install should default to the composefs backend for this root: it is composefs-native, and it has no ostree prepare-root.conf (has_ostree_prepareroot, which the caller loads anyway), without which it can’t be installed with the ostree backend. An image that has both configurations still defaults to ostree.

is_composefs_native 🔒

Whether the image is intended to be deployed with the composefs backend, which is signaled by the presence of a setup-root configuration file (even if empty).

setup_root_conf_path 🔒

The setup-root configuration, relative to the root directory.