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fix: clippy::zombie_processes #407

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fix: clippy::zombie_processes #407

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af88ff8
fix(init): spawn child instead of becoming one
mkroening Dec 11, 2024
efabe9b
fix(init): `clippy::zombie_processes`
mkroening Dec 11, 2024
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15 changes: 10 additions & 5 deletions src/init.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -225,7 +225,7 @@ fn init_stage_parent(args: SetupArgs) -> isize {
0 // Exit child process
}

fn init_stage_child(args: SetupArgs) -> ! {
fn init_stage_child(args: SetupArgs) -> isize {
let linux_spec = args.config.spec.linux().as_ref().unwrap();
debug!("Enter init_stage child");
let _ = prctl::set_name("runh:INIT");
Expand Down Expand Up @@ -611,6 +611,7 @@ fn init_stage_child(args: SetupArgs) -> ! {
nix::unistd::close(fifo_fd).expect("Could not close exec fifo O_PATH fd!");
nix::unistd::close(init_pipe.into_raw_fd()).expect("Could not close init pipe fd!");

let mut child = None;
if args.config.is_hermit_container {
let micro_vm: u32 = env::var("RUNH_MICRO_VM")
.unwrap_or_else(|_| "0".to_string())
Expand Down Expand Up @@ -650,7 +651,7 @@ fn init_stage_child(args: SetupArgs) -> ! {
}
cmd.envs(std::env::vars());

let _child = cmd.spawn().expect("Unable to virtiofsd");
child = Some(cmd.spawn().expect("Unable to virtiofsd"));
}
}

Expand All @@ -664,8 +665,12 @@ fn init_stage_child(args: SetupArgs) -> ! {
if let Some(tap_fd) = tap_fd {
cmd.preserved_fds(vec![tap_fd]);
}
let error = cmd.exec();
let status = cmd.status().unwrap();
assert!(status.success());

//This point should not be reached on successful exec
panic!("exec failed with error {}", error)
if let Some(mut child) = child {
child.wait().unwrap();
}

0
}