hwd: daemonize

Cargo.lock

@@ -641,6 +641,7 @@ dependencies = [
  "common",
  "fdt 0.1.5",
  "log",
+ "redox-daemon",
  "ron",
 ]
 

hwd/Cargo.toml

@@ -6,6 +6,7 @@ edition = "2018"
 [dependencies]
 fdt = "0.1.5"
 log = "0.4"
+redox-daemon = "0.1"
 ron = "0.8.1"
 
 amlserde = { path = "../amlserde" }

hwd/src/main.rs

@@ -1,9 +1,9 @@
-use std::process::Command;
+use std::process;
 
 mod backend;
 use self::backend::{AcpiBackend, Backend, DeviceTreeBackend, LegacyBackend};
 
-fn main() {
+fn daemon(daemon: redox_daemon::Daemon) -> ! {
     common::setup_logging(
         "misc",
         "hwd",
@@ -37,7 +37,7 @@ fn main() {
 
     //TODO: launch pcid based on backend information?
     // Must launch after acpid but before probe calls /scheme/acpi/symbols
-    match Command::new("pcid").spawn() {
+    match process::Command::new("pcid").spawn() {
         Ok(mut child) => match child.wait() {
             Ok(status) => if !status.success() {
                 log::error!("pcid exited with status {}", status);
@@ -50,12 +50,21 @@ fn main() {
             log::error!("failed to spawn pcid: {}", err);
         }
     }
+    
+    daemon.ready().expect("hwd: failed to notify parent");
 
     //TODO: HWD is meant to locate PCI/XHCI/etc devices in ACPI and DeviceTree definitions and start their drivers
     match backend.probe() {
-        Ok(()) => {}
+        Ok(()) => {
+            process::exit(0);
+        }
         Err(err) => {
             log::error!("failed to probe with error {}", err);
+            process::exit(1);
         }
     }
 }
+
+fn main() {
+    redox_daemon::Daemon::new(daemon).expect("hwd: failed to daemonize");
+}