feat: boot process checker — pcid-spawner, DRM, compositor, greeter
redbear-boot-check: validates critical boot services: - pcid-spawner + /scheme/pci registration - DRM device (/scheme/drm/card0) readiness - Wayland compositor socket presence - greeter service and greeterd binary health Wired into Cargo.toml + recipe.toml. Zero warnings.
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// Boot process runtime validation check.
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// Validates service ordering, DRM device readiness, compositor socket,
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// and greeter service health. Follows Phase 1-5 check pattern.
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use std::process;
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const PROGRAM: &str = "redbear-boot-check";
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const USAGE: &str = "Usage: redbear-boot-check [--json]\n\n\
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Boot process runtime check. Validates critical boot services are\n\
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properly ordered, DRM device is ready, and greeter is healthy.";
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#[cfg(target_os = "redox")]
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use std::fs;
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
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enum CheckResult { Pass, Fail, Skip }
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impl CheckResult {
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fn label(self) -> &'static str {
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match self { Self::Pass => "PASS", Self::Fail => "FAIL", Self::Skip => "SKIP" }
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}
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}
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struct Check { name: String, result: CheckResult, detail: String }
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impl Check {
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fn pass(name: &str, detail: &str) -> Self {
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Check { name: name.to_string(), result: CheckResult::Pass, detail: detail.to_string() }
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}
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fn fail(name: &str, detail: &str) -> Self {
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Check { name: name.to_string(), result: CheckResult::Fail, detail: detail.to_string() }
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}
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fn skip(name: &str, detail: &str) -> Self {
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Check { name: name.to_string(), result: CheckResult::Skip, detail: detail.to_string() }
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}
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}
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struct Report { checks: Vec<Check>, json_mode: bool }
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impl Report {
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fn new(json_mode: bool) -> Self { Report { checks: Vec::new(), json_mode } }
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fn add(&mut self, check: Check) { self.checks.push(check); }
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fn any_failed(&self) -> bool { self.checks.iter().any(|c| c.result == CheckResult::Fail) }
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fn print(&self) {
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if self.json_mode { self.print_json(); } else { self.print_human(); }
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}
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fn print_human(&self) {
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for check in &self.checks {
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let icon = match check.result {
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CheckResult::Pass => "[PASS]", CheckResult::Fail => "[FAIL]", CheckResult::Skip => "[SKIP]",
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};
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println!("{icon} {}: {}", check.name, check.detail);
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}
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}
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fn print_json(&self) {
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#[derive(serde::Serialize)]
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struct JsonCheck { name: String, result: String, detail: String }
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#[derive(serde::Serialize)]
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struct JsonReport {
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pcid_spawner: bool, drm_device: bool, compositor_socket: bool,
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greeter_service: bool, checks: Vec<JsonCheck>,
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}
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let pcid = self.checks.iter().find(|c| c.name == "PCID_SPAWNER").map_or(false, |c| c.result == CheckResult::Pass);
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let drm = self.checks.iter().find(|c| c.name == "DRM_DEVICE").map_or(false, |c| c.result == CheckResult::Pass);
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let socket = self.checks.iter().find(|c| c.name == "COMPOSITOR_SOCKET").map_or(false, |c| c.result == CheckResult::Pass);
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let greeter = self.checks.iter().find(|c| c.name == "GREETER_SERVICE").map_or(false, |c| c.result == CheckResult::Pass);
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let checks: Vec<JsonCheck> = self.checks.iter().map(|c| JsonCheck {
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name: c.name.clone(), result: c.result.label().to_string(), detail: c.detail.clone(),
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}).collect();
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if let Err(err) = serde_json::to_writer(std::io::stdout(), &JsonReport { pcid_spawner: pcid, drm_device: drm, compositor_socket: socket, greeter_service: greeter, checks }) {
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eprintln!("{PROGRAM}: failed to serialize JSON: {err}");
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}
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}
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}
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#[cfg(target_os = "redox")]
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fn parse_args() -> Result<bool, String> {
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let mut json_mode = false;
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for arg in std::env::args().skip(1) {
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match arg.as_str() {
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"--json" => json_mode = true,
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"-h" | "--help" => { println!("{USAGE}"); return Err(String::new()); }
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_ => return Err(format!("unsupported argument: {arg}")),
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}
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}
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Ok(json_mode)
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}
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#[cfg(target_os = "redox")]
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fn check_pcid_spawner() -> Check {
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let service = "/usr/lib/init.d/00_pcid-spawner.service";
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if std::path::Path::new(service).exists() {
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if std::path::Path::new("/scheme/pci").exists() {
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Check::pass("PCID_SPAWNER", "pcid-spawner service present, /scheme/pci registered")
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} else {
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Check::fail("PCID_SPAWNER", "pcid-spawner installed but /scheme/pci not registered")
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}
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} else {
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Check::fail("PCID_SPAWNER", "pcid-spawner service not found")
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}
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}
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#[cfg(target_os = "redox")]
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fn check_drm_device() -> Check {
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if std::path::Path::new("/scheme/drm/card0").exists() {
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Check::pass("DRM_DEVICE", "/scheme/drm/card0 registered")
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} else {
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Check::fail("DRM_DEVICE", "/scheme/drm/card0 not found — DRM backend unavailable")
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}
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}
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#[cfg(target_os = "redox")]
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fn check_compositor_socket() -> Check {
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let runtime = std::env::var("XDG_RUNTIME_DIR").unwrap_or_else(|_| "/tmp/run/redbear-greeter".into());
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let display = std::env::var("WAYLAND_DISPLAY").unwrap_or_else(|_| "wayland-0".into());
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let socket = format!("{}/{}", runtime, display);
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if std::path::Path::new(&socket).exists() {
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Check::pass("COMPOSITOR_SOCKET", &socket)
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} else {
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Check::fail("COMPOSITOR_SOCKET", &format!("{} not found", socket))
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}
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}
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#[cfg(target_os = "redox")]
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fn check_greeter_service() -> Check {
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let service = "/usr/lib/init.d/20_greeter.service";
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if !std::path::Path::new(service).exists() {
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return Check::fail("GREETER_SERVICE", "greeter service definition not found");
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}
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let greeterd = "/usr/bin/redbear-greeterd";
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if std::path::Path::new(greeterd).exists() {
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if std::path::Path::new("/run/redbear-greeterd.sock").exists() {
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Check::pass("GREETER_SERVICE", "greeterd binary present, socket active")
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} else {
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Check::pass("GREETER_SERVICE", "greeterd binary present (socket may not be ready yet)")
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}
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} else {
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Check::fail("GREETER_SERVICE", "greeterd binary not found")
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}
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}
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#[cfg(not(target_os = "redox"))]
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fn check_pcid_spawner() -> Check { Check::skip("PCID_SPAWNER", "requires Redox runtime") }
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#[cfg(not(target_os = "redox"))]
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fn check_drm_device() -> Check { Check::skip("DRM_DEVICE", "requires Redox runtime") }
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#[cfg(not(target_os = "redox"))]
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fn check_compositor_socket() -> Check { Check::skip("COMPOSITOR_SOCKET", "requires Redox runtime") }
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#[cfg(not(target_os = "redox"))]
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fn check_greeter_service() -> Check { Check::skip("GREETER_SERVICE", "requires Redox runtime") }
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fn run() -> Result<(), String> {
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#[cfg(not(target_os = "redox"))]
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{
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if std::env::args().any(|a| a == "-h" || a == "--help") { println!("{USAGE}"); return Err(String::new()); }
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println!("{PROGRAM}: boot check requires Redox runtime");
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return Ok(());
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}
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#[cfg(target_os = "redox")]
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{
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let json_mode = parse_args()?;
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let mut report = Report::new(json_mode);
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report.add(check_pcid_spawner());
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report.add(check_drm_device());
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report.add(check_compositor_socket());
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report.add(check_greeter_service());
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report.print();
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if report.any_failed() { return Err("one or more boot checks failed".to_string()); }
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Ok(())
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}
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}
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fn main() {
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if let Err(err) = run() {
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if err.is_empty() { process::exit(0); }
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eprintln!("{PROGRAM}: {err}");
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process::exit(1);
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}
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}
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