Add systemd structured logging for bootc state changes

Log key operations (deploy, upgrade, switch, install, etc.) to systemd journal with structured fields including image references, digests, and operation types. Uses existing journal infrastructure and follows ostree logging pattern.

Author: cgwalters

Cargo.lock

@@ -65,6 +65,7 @@ tokio-util = { features = ["io-util"], version = "0.7.10" }
 toml = "0.9.5"
 tracing = "0.1.40"
 tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
+tracing-journald = "0.3.1"
 uzers = "0.12"
 xshell = "0.2.6"
 

Cargo.toml

@@ -7,6 +7,17 @@ publish = false
 
 [dependencies]
 anyhow.workspace = true
+clap = { workspace = true, features = ["std", "help", "usage", "derive"] }
+rustix.workspace = true
+serde = { workspace = true, features = ["derive"] }
+composefs.workspace = true
+composefs-boot.workspace = true
+toml.workspace = true
 
 [lints]
 workspace = true
+
+[features]
+default = ['pre-6.15']
+rhel9 = ['composefs/rhel9']
+'pre-6.15' = ['composefs/pre-6.15']

crates/initramfs/Cargo.toml

@@ -2,8 +2,7 @@
 Description=bootc setup root
 Documentation=man:bootc(1)
 DefaultDependencies=no
-# For now
-ConditionKernelCommandLine=ostree
+ConditionKernelCommandLine=composefs
 ConditionPathExists=/etc/initrd-release
 After=sysroot.mount
 After=ostree-prepare-root.service

crates/initramfs/bootc-root-setup.service

@@ -1,24 +1,15 @@
 //! Code for bootc that goes into the initramfs.
-//! At the current time, this is mostly just a no-op.
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 
+mod mount;
+
 use anyhow::Result;
 
-fn setup_root() -> Result<()> {
-    let _ = std::fs::metadata("/sysroot/usr")?;
-    println!("setup OK");
-    Ok(())
-}
+use clap::Parser;
+use mount::{gpt_workaround, setup_root, Args};
 
 fn main() -> Result<()> {
-    let v = std::env::args().collect::<Vec<_>>();
-    let args = match v.as_slice() {
-        [] => anyhow::bail!("Missing argument".to_string()),
-        [_, rest @ ..] => rest,
-    };
-    match args {
-        [] => anyhow::bail!("Missing argument".to_string()),
-        [s] if s == "setup-root" => setup_root(),
-        [o, ..] => anyhow::bail!(format!("Unknown command {o}")),
-    }
+    let args = Args::parse();
+    gpt_workaround()?;
+    setup_root(args)
 }