Handle bootc backend in origin file

Signed-off-by: John Eckersberg <jeckersb@redhat.com>

Author: jeckersb

lib/src/cli.rs

@@ -504,14 +504,16 @@ async fn switch(opts: SwitchOpts) -> Result<()> {
     let target = ostree_container::OstreeImageReference { sigverify, imgref };
     let target = ImageReference::from(target);
 
+    let backend = opts.backend.unwrap_or_default();
+
     // If we're doing an in-place mutation, we shortcut most of the rest of the work here
     if opts.mutate_in_place {
         let deployid = {
             // Clone to pass into helper thread
             let target = target.clone();
             let root = cap_std::fs::Dir::open_ambient_dir("/", cap_std::ambient_authority())?;
             tokio::task::spawn_blocking(move || {
-                crate::deploy::switch_origin_inplace(&root, &target)
+                crate::deploy::switch_origin_inplace(&root, &target, backend)
             })
             .await??
         };
@@ -530,7 +532,7 @@ async fn switch(opts: SwitchOpts) -> Result<()> {
     let new_spec = {
         let mut new_spec = host.spec.clone();
         new_spec.image = Some(target.clone());
-        new_spec.backend = opts.backend.unwrap_or_default();
+        new_spec.backend = backend;
         new_spec
     };
 

lib/src/deploy.rs

@@ -357,14 +357,17 @@ async fn deploy(
 }
 
 #[context("Generating origin")]
-fn origin_from_imageref(imgref: &ImageReference) -> Result<glib::KeyFile> {
+fn origin_from_imageref(imgref: &ImageReference, backend: Backend) -> Result<glib::KeyFile> {
     let origin = glib::KeyFile::new();
     let imgref = OstreeImageReference::from(imgref.clone());
     origin.set_string(
         "origin",
         ostree_container::deploy::ORIGIN_CONTAINER,
         imgref.to_string().as_str(),
     );
+    if backend == Backend::Container {
+        origin.set_string("bootc", "backend", "container");
+    }
     Ok(origin)
 }
 
@@ -377,7 +380,7 @@ pub(crate) async fn stage(
     spec: &RequiredHostSpec<'_>,
 ) -> Result<()> {
     let merge_deployment = sysroot.merge_deployment(Some(stateroot));
-    let origin = origin_from_imageref(spec.image)?;
+    let origin = origin_from_imageref(spec.image, image.backend)?;
     crate::deploy::deploy(
         sysroot,
         merge_deployment.as_ref(),
@@ -478,9 +481,13 @@ fn find_newest_deployment_name(deploysdir: &Dir) -> Result<String> {
 }
 
 // Implementation of `bootc switch --in-place`
-pub(crate) fn switch_origin_inplace(root: &Dir, imgref: &ImageReference) -> Result<String> {
+pub(crate) fn switch_origin_inplace(
+    root: &Dir,
+    imgref: &ImageReference,
+    backend: Backend,
+) -> Result<String> {
     // First, just create the new origin file
-    let origin = origin_from_imageref(imgref)?;
+    let origin = origin_from_imageref(imgref, backend)?;
     let serialized_origin = origin.to_data();
 
     // Now, we can't rely on being officially booted (e.g. with the `ostree=` karg)
@@ -540,7 +547,7 @@ fn test_switch_inplace() -> Result<()> {
         signature: None,
     };
     {
-        let origin = origin_from_imageref(&orig_imgref)?;
+        let origin = origin_from_imageref(&orig_imgref, Backend::OstreeContainer)?;
         deploydir.atomic_write(
             format!("{target_deployment}.origin"),
             origin.to_data().as_bytes(),
@@ -553,7 +560,7 @@ fn test_switch_inplace() -> Result<()> {
         signature: None,
     };
 
-    let replaced = switch_origin_inplace(&td, &target_imgref).unwrap();
+    let replaced = switch_origin_inplace(&td, &target_imgref, Backend::OstreeContainer).unwrap();
     assert_eq!(replaced, target_deployment);
     Ok(())
 }