feat(extend_payload_to_esp):add payload to bootupd efi updates dir.

Bootup extend_payload_to_esp <path> will move the <path> to bootupd updates

This features gives user ability to add payload though bootupd update stage,it
also updates efi metadata. This will help in mounting uboot binaries to esp
as required by rpi4.
example usage: `bootupctl backend extend_payload_to_esp /usr/lib/mydata`
will move the content of the dir to `usr/lib/bootupd/updates/EFI` and
appends metadata to `/usr/lib/bootupd/updates/EFI.json`

Author: say-paul

src/bios.rs

@@ -267,4 +267,7 @@ impl Component for Bios {
     fn get_efi_vendor(&self, _: &openat::Dir) -> Result<Option<String>> {
         Ok(None)
     }
+    fn extend_payload(&self, _: &str, _: &str) -> Result<Option<bool>> {
+        Ok(None)
+    }
 }

src/cli/bootupctl.rs

@@ -73,6 +73,8 @@ pub enum CtlBackend {
     Generate(super::bootupd::GenerateOpts),
     #[clap(name = "install", hide = true)]
     Install(super::bootupd::InstallOpts),
+    #[clap(name = "extend-payload-to-esp", hide = true)]
+    ExtendPayload(super::bootupd::ExtendPayloadOpts),
 }
 
 #[derive(Debug, Parser)]
@@ -109,6 +111,9 @@ impl CtlCommand {
             CtlVerb::Backend(CtlBackend::Install(opts)) => {
                 super::bootupd::DCommand::run_install(opts)
             }
+            CtlVerb::Backend(CtlBackend::ExtendPayload(opts)) => {
+                super::bootupd::DCommand::run_extend_payload(opts)
+            }
             CtlVerb::MigrateStaticGrubConfig => Self::run_migrate_static_grub_config(),
         }
     }

src/cli/bootupd.rs

@@ -35,6 +35,11 @@ pub enum DVerb {
     GenerateUpdateMetadata(GenerateOpts),
     #[clap(name = "install", about = "Install components")]
     Install(InstallOpts),
+    #[clap(
+        name = "extend-payload-to-esp",
+        about = "Extend bootloader payload with additional files"
+    )]
+    ExtendPayload(ExtendPayloadOpts),
 }
 
 #[derive(Debug, Parser)]
@@ -82,12 +87,20 @@ pub struct GenerateOpts {
     sysroot: Option<String>,
 }
 
+#[derive(Debug, Parser)]
+pub struct ExtendPayloadOpts {
+    /// Source directory containing files to add
+    #[clap(value_parser)]
+    src_root: String,
+}
+
 impl DCommand {
     /// Run CLI application.
     pub fn run(self) -> Result<()> {
         match self.cmd {
             DVerb::Install(opts) => Self::run_install(opts),
             DVerb::GenerateUpdateMetadata(opts) => Self::run_generate_meta(opts),
+            DVerb::ExtendPayload(opts) => Self::run_extend_payload(opts),
         }
     }
 
@@ -122,4 +135,17 @@ impl DCommand {
         .context("boot data installation failed")?;
         Ok(())
     }
+
+    pub(crate) fn run_extend_payload(opts: ExtendPayloadOpts) -> Result<()> {
+        let components = crate::bootupd::get_components();
+        let sysroot = "/";
+        for component in components.values() {
+            if let Some(updated) = component.extend_payload(sysroot, &opts.src_root)? {
+                if updated {
+                    println!("Extended payload for {} successfully", component.name());
+                }
+            }
+        }
+        Ok(())
+    }
 }

src/component.rs

@@ -79,6 +79,9 @@ pub(crate) trait Component {
 
     /// Locating efi vendor dir
     fn get_efi_vendor(&self, sysroot: &openat::Dir) -> Result<Option<String>>;
+
+    /// Extending payload from input dir
+    fn extend_payload(&self, sysroot: &str, src_root: &str) -> Result<Option<bool>>;
 }
 
 /// Given a component name, create an implementation.

src/efi.rs

@@ -454,6 +454,43 @@ impl Component for Efi {
         Ok(meta)
     }
 
+    fn extend_payload(&self, sysroot_path: &str, src_input: &str) -> Result<Option<bool>> {
+        let ostreebootdir = Path::new(sysroot_path).join(ostreeutil::BOOT_PREFIX);
+        let dest_efidir = component_updatedir(sysroot_path, self);
+
+        // move files to staged updates
+        if ostreebootdir.exists() {
+            let cruft = ["loader", "grub2"];
+            for p in cruft.iter() {
+                let p = ostreebootdir.join(p);
+                if p.exists() {
+                    std::fs::remove_dir_all(&p)?;
+                }
+            }
+            // mv src data to /usr/lib_bootupd/updates/EFI
+            let efisrc = ostreebootdir.join(src_input);
+            if !efisrc.exists() {
+                bail!("Failed to find {:?}", &efisrc);
+            }
+            Command::new("mv").args([&efisrc, &dest_efidir]).run()?;
+        }
+
+        // canocinal path information parsed
+        let efidir = openat::Dir::open(&dest_efidir)
+            .with_context(|| format!("Opening {}", dest_efidir.display()))?;
+        let files = crate::util::filenames(&efidir)?.into_iter().map(|mut f| {
+            f.insert_str(0, src_input);
+            f
+        });
+
+        // writes EFI.JSON with the timestamp and version
+        let meta =
+            packagesystem::query_files(sysroot_path, files).context("Querying RPM metadata")?;
+        write_update_metadata(sysroot_path, self, &meta)?;
+
+        Ok(Some(true))
+    }
+
     fn query_update(&self, sysroot: &openat::Dir) -> Result<Option<ContentMetadata>> {
         get_component_update(sysroot, self)
     }