DaLaw2/NetGuardia
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fix: restart uses exec to re-launch process instead of exit(0)

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Previous implementation relied on systemd Restart=always to restart
the process after exit(0), which meant restart was identical to
shutdown without systemd.

Now uses std::process::Command::exec() (Unix execvp) to replace the
current process image with a fresh instance. Works with or without
systemd. system.terminate() is called first to detach eBPF and stop
ML engine before exec.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
DaLaw2 2026-04-01 16:24:41 +08:00
parent c2e1aff12d
commit 7b2b4f1f1e
1 changed files with 9 additions and 2 deletions
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11
net-guardia/src/main.rs
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@ -107,8 +107,15 @@ async fn main() -> Result<(), Error> {
crate::core::system::ShutdownMode::Restart => {
log!(SystemLog::ApiRestart);
let _ = sd_notify::notify(false, &[sd_notify::NotifyState::Reloading]);
// Exit with 0 — systemd Restart=always will restart the process
std::process::exit(0);
// Re-exec self — works with or without systemd
use std::os::unix::process::CommandExt;
let exe = std::env::current_exe().unwrap_or_else(|_| std::path::PathBuf::from("net-guardia"));
let err = std::process::Command::new(exe)
.args(std::env::args().skip(1))
.exec(); // replaces current process
// If exec fails, fall through to exit
log!(SystemError::UnexpectedError(err));
std::process::exit(1);
}
crate::core::system::ShutdownMode::Shutdown => {
log!(SystemLog::ApiShutdown);