--- src/sshguard.in.orig	2020-12-31 17:06:03 UTC
+++ src/sshguard.in
@@ -98,14 +98,8 @@ elif [ -z "$tailcmd" ]; then
     exit 1
 fi
 
-if [ -n "$PID_FILE" ]; then
-    if [ ! -e "$PID_FILE" ]; then
-        echo "$$" > $PID_FILE
-    else
-        err "$PID_FILE already exists; is SSHGuard already running?"
-        exit 1
-    fi
-fi
+# Already checked by rc(8)
+echo "$$" > $PID_FILE
 
 # Select PARSER from configuration file or use default. Add POST_PARSER from
 # configuration file if it exists.
@@ -119,5 +113,4 @@ trap "clean_and_exit" INT TERM
 trap "kill 0" EXIT
 
 eval $tailcmd | eval "$RUN_PARSER" | \
-    $libexec/sshg-blocker $flags | $BACKEND &
-wait
+    $libexec/sshg-blocker $flags | ($BACKEND ; pkill -PIPE -P $$)