From 6d5ceae8b454edd749b3b65c88aacc0a31ce9215 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=BCrgen=20H=C3=B6tzel?= <juergen@hoetzel.info>
Date: Sun, 14 Mar 2021 19:32:14 +0100
Subject: [PATCH] fix: wait for async command exit (#1326)

This prevents the accumulation of zombie processes when using
async (&) event commands. Also log async command failures.
---
 runner/runner.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/runner/runner.go b/runner/runner.go
index c0e309851b..2dbafa5cd1 100644
--- a/runner/runner.go
+++ b/runner/runner.go
@@ -102,6 +102,14 @@ func (r *Runner) exec(raw, evt, path, dst string, user *users.User) error {
 
 	if !blocking {
 		log.Printf("[INFO] Nonblocking Command: \"%s\"", strings.Join(command, " "))
+		defer func() {
+			go func() {
+				err := cmd.Wait()
+				if err != nil {
+					log.Printf("[INFO] Nonblocking Command \"%s\" failed: %s", strings.Join(command, " "), err)
+				}
+			}()
+		}()
 		return cmd.Start()
 	}