fix: was reaping too fast?

cmd/dkl-system-init/dumb-init-bridge.go

@@ -3,6 +3,7 @@ package main
 import (
 	"os"
 	"os/signal"
+	"syscall"
 
 	"golang.org/x/sys/unix"
 	"novit.nc/direktil/pkg/log"
@@ -14,26 +15,25 @@ func handleChildren() {
 		initLog.Taintf(log.Error, "reaper: failed to set myself a child sub-reaper: %v", err)
 	}
 
-	sigchld := make(chan os.Signal, 10)
-	signal.Notify(sigchld, unix.SIGCHLD)
+	sigchld := make(chan os.Signal, 2048)
+	signal.Notify(sigchld, syscall.SIGCHLD)
 
 	for range sigchld {
-		// reap children
-		var (
-			ws  unix.WaitStatus
-			rus unix.Rusage
-		)
-		for {
-			pid, err := unix.Wait4(-1, &ws, unix.WNOHANG, &rus)
-			if err != nil {
-				if err == unix.ECHILD {
-					break
-				}
-				initLog.Taintf(log.Warning, "reaper: wait4 failed: %v", err)
-			}
-			if pid <= 0 {
+		reapChildren()
+	}
+}
+
+func reapChildren() {
+	for {
+		pid, err := syscall.Wait4(-1, nil, syscall.WNOHANG, nil)
+		if err != nil {
+			if err == unix.ECHILD {
 				break
 			}
+			initLog.Taintf(log.Warning, "reaper: wait4 failed: %v", err)
+		}
+		if pid <= 0 {
+			break
 		}
 	}
 }