init: Fix boot stuck caused by driver exiting

init/src/service.rs

@@ -1,7 +1,7 @@
 use std::collections::{BTreeMap, BTreeSet};
 use std::ffi::OsString;
 use std::io::Read;
-use std::os::fd::{AsRawFd, OwnedFd};
+use std::os::fd::{AsRawFd, RawFd};
 use std::os::unix::process::CommandExt;
 use std::process::Command;
 use std::{env, io};
@@ -47,7 +47,7 @@ impl Service {
         command.envs(base_envs).envs(&self.envs);
 
         let (mut read_pipe, write_pipe) = io::pipe().unwrap();
-        unsafe { pass_fd(&mut command, "INIT_NOTIFY", write_pipe.into()) };
+        unsafe { pass_fd(&mut command, "INIT_NOTIFY", write_pipe.as_raw_fd()) };
 
         let mut child = match command.spawn() {
             Ok(child) => child,
@@ -56,6 +56,7 @@ impl Service {
                 return;
             }
         };
+        drop(write_pipe);
 
         match &self.type_ {
             ServiceType::Notify => match read_pipe.read_exact(&mut [0]) {
@@ -117,12 +118,12 @@ impl Service {
     }
 }
 
-unsafe fn pass_fd(cmd: &mut Command, env: &str, fd: OwnedFd) {
-    cmd.env(env, format!("{}", fd.as_raw_fd()));
+unsafe fn pass_fd(cmd: &mut Command, env: &str, fd: RawFd) {
+    cmd.env(env, format!("{}", fd));
     unsafe {
         cmd.pre_exec(move || {
             // Pass notify pipe to child
-            if libc::fcntl(fd.as_raw_fd(), libc::F_SETFD, 0) == -1 {
+            if libc::fcntl(fd, libc::F_SETFD, 0) == -1 {
                 Err(io::Error::last_os_error())
             } else {
                 Ok(())