31 lines
789 B
Rust
31 lines
789 B
Rust
use std::process::{exit, Command, Stdio};
|
|
|
|
use nix::sys::wait::waitpid;
|
|
use nix::unistd::{fork, ForkResult};
|
|
|
|
/// Performs a double fork with setsid to spawn and detach a command.
|
|
pub fn spawn(mut command: Command) {
|
|
command
|
|
.stdin(Stdio::null())
|
|
.stdout(Stdio::null())
|
|
.stderr(Stdio::null());
|
|
|
|
unsafe {
|
|
match fork() {
|
|
Ok(ForkResult::Parent { child }) => {
|
|
let _res = waitpid(Some(child), None);
|
|
}
|
|
|
|
Ok(ForkResult::Child) => {
|
|
let _res = nix::unistd::setsid();
|
|
let _res = command.spawn();
|
|
|
|
exit(0);
|
|
}
|
|
|
|
Err(why) => {
|
|
println!("failed to fork and spawn command: {}", why.desc());
|
|
}
|
|
}
|
|
}
|
|
}
|