Use redox-daemon

Cargo.lock

@@ -8,6 +8,22 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "libc"
+version = "0.2.126"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
+
+[[package]]
+name = "redox-daemon"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21e31c834277709c7ff3eb74959fe62be4b45b1189ba9d41fd3744cd3a9c554f"
+dependencies = [
+ "libc",
+ "redox_syscall",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.2.16"
@@ -21,5 +37,6 @@ dependencies = [
 name = "zerod"
 version = "0.1.0"
 dependencies = [
+ "redox-daemon",
  "redox_syscall",
 ]

Cargo.toml

@@ -2,6 +2,8 @@
 name = "zerod"
 version = "0.1.0"
 authors = ["Alex Lyon <arcterus@mail.com>"]
+edition = "2021"
 
 [dependencies]
 redox_syscall = "0.2.12"
+redox-daemon = "0.1"

src/main.rs

@@ -1,30 +1,31 @@
-extern crate syscall;
-
-use syscall::data::Packet;
-use syscall::flag::CloneFlags;
-use syscall::scheme::Scheme;
 use std::fs::File;
 use std::io::{Read, Write};
+
+use syscall::data::Packet;
+use syscall::scheme::Scheme;
+
 use scheme::ZeroScheme;
 
 mod scheme;
 
 fn main() {
-    if unsafe { syscall::clone(CloneFlags::empty()).unwrap() } == 0 {
+    redox_daemon::Daemon::new(move |daemon| {
         let mut socket = File::create(":zero").expect("zerod: failed to create zero scheme");
         let scheme = ZeroScheme;
 
         syscall::setrens(0, 0).expect("zerod: failed to enter null namespace");
 
+        daemon.ready().expect("zerod: failed to notify parent");
+
         loop {
             let mut packet = Packet::default();
             if socket.read(&mut packet).expect("zerod: failed to read events from zero scheme") == 0 {
-                break;
+                std::process::exit(0);
             }
 
             scheme.handle(&mut packet);
 
             socket.write(&packet).expect("zerod: failed to write responses to zero scheme");
         }
-    }
+    }).expect("zerod: failed to daemonize");
 }