From d7210fd7a0cceaffd153673d259a0b70d4b30ce5 Mon Sep 17 00:00:00 2001
From: Oliver Sedlbauer <os@dev.tdt.de>
Date: Fri, 13 Mar 2026 15:42:48 +0100
Subject: [PATCH] agents: fix lnx_bonding when no bonding interface is
 configured

When /proc/net/bonding exists but no bonding interface is configured,
head fails with:

  head: *: No such file or directory

Fix this by checking if any interfaces exist before running head

Signed-off-by: Oliver Sedlbauer <os@dev.tdt.de>
---
 agents/check_mk_agent.linux   | 2 +-
 agents/check_mk_agent.openwrt | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/agents/check_mk_agent.linux b/agents/check_mk_agent.linux
index 810cd2817e1..fdc77abaeb4 100755
--- a/agents/check_mk_agent.linux
+++ b/agents/check_mk_agent.linux
@@ -857,7 +857,7 @@ section_bonding_interfaces() {
     (
         cd /proc/net/bonding 2>/dev/null || return
         echo '<<<lnx_bonding:sep(58)>>>'
-        head -v -n 1000 ./*
+        [ -n "$(ls)" ] && head -v -n 1000 ./*
     )
 }
 
diff --git a/agents/check_mk_agent.openwrt b/agents/check_mk_agent.openwrt
index a40c05d7137..f02d506bdf5 100755
--- a/agents/check_mk_agent.openwrt
+++ b/agents/check_mk_agent.openwrt
@@ -581,7 +581,7 @@ section_bonding_interfaces() {
     (
         cd /proc/net/bonding 2>/dev/null || return
         echo '<<<lnx_bonding:sep(58)>>>'
-        head -v -n 1000 ./*
+        [ -n "$(ls)" ] && head -v -n 1000 ./*
     )
 }