fix: don't wait on systemctl if we don't need to

Author: desbma

src/main.rs

@@ -127,7 +127,7 @@ fn main() -> anyhow::Result<()> {
             service.add_profile_fragment(&mode)?;
             if !no_restart {
                 service.reload_unit_config()?;
-                service.action("restart")?;
+                service.action("restart", false)?;
             } else {
                 log::warn!("Profiling config will only be applied when systemd config is reloaded, and service restarted");
             }
@@ -138,7 +138,7 @@ fn main() -> anyhow::Result<()> {
             no_restart,
         }) => {
             let service = systemd::Service::new(&service);
-            service.action("stop")?;
+            service.action("stop", true)?;
             service.remove_profile_fragment()?;
             let resolved_opts = service.profiling_result()?;
             log::info!(
@@ -154,15 +154,15 @@ fn main() -> anyhow::Result<()> {
             }
             service.reload_unit_config()?;
             if !no_restart {
-                service.action("start")?;
+                service.action("start", false)?;
             }
         }
         cl::Action::Service(cl::ServiceAction::Reset { service }) => {
             let service = systemd::Service::new(&service);
             let _ = service.remove_profile_fragment();
             let _ = service.remove_hardening_fragment();
             service.reload_unit_config()?;
-            service.action("try-restart")?;
+            service.action("try-restart", false)?;
         }
     }
 

src/systemd/service.rs

@@ -197,11 +197,15 @@ impl Service {
         Ok(())
     }
 
-    pub fn action(&self, verb: &str) -> anyhow::Result<()> {
-        log::info!("{} {}", verb, &self.unit_name());
-        let status = Command::new("systemctl")
-            .args([verb, &self.unit_name()])
-            .status()?;
+    pub fn action(&self, verb: &str, block: bool) -> anyhow::Result<()> {
+        let unit_name = self.unit_name();
+        log::info!("{} {}", verb, unit_name);
+        let mut cmd = vec![verb];
+        if !block {
+            cmd.push("--no-block");
+        }
+        cmd.push(&unit_name);
+        let status = Command::new("systemctl").args(cmd).status()?;
         if !status.success() {
             anyhow::bail!("systemctl failed: {status}");
         }