install: Fix install config kargs + to-filesystem

I think this got broken in a refactoring; add
test coverage.  In general all the heavy
lifting should move out of `baseline.rs`; a
good way to do that is probably to take the
next step of making it its own crate that
doesn't depend on the bootc core logic perhaps.

Closes: https://github.com/containers/bootc/issues/570
Signed-off-by: Colin Walters <walters@verbum.org>

hack/Containerfile

@@ -17,10 +17,16 @@ RUN mkdir -p /build/target/dev-rootfs  # This can hold arbitrary extra content
 RUN --mount=type=cache,target=/build/target --mount=type=cache,target=/var/roothome make test-bin-archive && mkdir -p /out && cp target/bootc.tar.zst /out
 
 FROM $base
+# We support e.g. adding cloud-init
 ARG variant=
 COPY hack/provision-derived.sh /tmp
 RUN /tmp/provision-derived.sh "$variant" && rm -f /tmp/*.sh
+# Also copy in some default install configs we use for testing
+COPY hack/install-test-configs/* /usr/lib/bootc/install/
+# Inject our built code
 COPY --from=build /out/bootc.tar.zst /tmp
-COPY --from=build /build/target/dev-rootfs/ /
 RUN tar -C / --zstd -xvf /tmp/bootc.tar.zst && rm -vf /tmp/*
+# Also copy over arbitrary bits from the target root
+COPY --from=build /build/target/dev-rootfs/ /
+# Test our own linting
 RUN bootc container lint

lib/src/install.rs

@@ -642,10 +642,18 @@ async fn initialize_ostree_root_from_self(
         imgref: src_imageref,
     };
 
+    let install_config_kargs = state
+        .install_config
+        .as_ref()
+        .and_then(|c| c.kargs.as_ref())
+        .into_iter()
+        .flatten()
+        .map(|s| s.as_str());
     let kargs = root_setup
         .kargs
         .iter()
         .map(|v| v.as_str())
+        .chain(install_config_kargs)
         .chain(state.config_opts.karg.iter().flatten().map(|v| v.as_str()))
         .collect::<Vec<_>>();
     let mut options = ostree_container::deploy::DeployOpts::default();

lib/src/install/baseline.rs

@@ -401,19 +401,11 @@ pub(crate) fn install_create_rootfs(
         fstype: MountSpec::AUTO.into(),
         options: Some("ro".into()),
     });
-    let install_config_kargs = state
-        .install_config
-        .as_ref()
-        .and_then(|c| c.kargs.as_ref())
-        .into_iter()
-        .flatten()
-        .map(ToOwned::to_owned);
     let kargs = root_blockdev_kargs
         .into_iter()
         .flatten()
         .chain([rootarg, RW_KARG.to_string()].into_iter())
         .chain(bootarg)
-        .chain(install_config_kargs)
         .collect::<Vec<_>>();
 
     mount::mount(&rootdev, &rootfs)?;

tests-integration/src/install.rs

@@ -88,11 +88,18 @@ pub(crate) fn run_alongside(image: &str, mut testargs: libtest_mimic::Arguments)
                 std::fs::write(&tmp_keys, b"ssh-ed25519 ABC0123 testcase@example.com")?;
                 cmd!(sh, "sudo {BASE_ARGS...} {target_args...} -v {tmp_keys}:/test_authorized_keys {image} bootc install to-filesystem {generic_inst_args...} --acknowledge-destructive --karg=foo=bar --replace=alongside --root-ssh-authorized-keys=/test_authorized_keys /target").run()?;
 
+                // Test kargs injected via CLI
                 cmd!(
                     sh,
                     "sudo /bin/sh -c 'grep foo=bar /boot/loader/entries/*.conf'"
                 )
                 .run()?;
+                // And kargs we added into our default container image
+                cmd!(
+                    sh,
+                    "sudo /bin/sh -c 'grep localtestkarg=somevalue /boot/loader/entries/*.conf'"
+                )
+                .run()?;
                 let deployment = &find_deployment_root()?;
                 let cwd = sh.push_dir(format!("/proc/self/fd/{}", deployment.as_raw_fd()));
                 cmd!(