X-Git-Url: https://git.adam-barratt.org.uk/?a=blobdiff_plain;f=dsa-nagios-checks%2Fchecks%2Fdsa-check-running-kernel;h=ccdfd809d12501346b2131b79ef0e0f4d55d2b0d;hb=f8f0a115031d992fc10e5a3ab43c56b61efe94db;hp=115748047e87e0dc033340537ce62febe4dc8d07;hpb=6468688ac39bc7ddf28831ee3a2583a451f34519;p=mirror%2Fdsa-nagios.git

diff --git a/dsa-nagios-checks/checks/dsa-check-running-kernel b/dsa-nagios-checks/checks/dsa-check-running-kernel
index 1157480..ccdfd80 100755
--- a/dsa-nagios-checks/checks/dsa-check-running-kernel
+++ b/dsa-nagios-checks/checks/dsa-check-running-kernel
@@ -130,12 +130,17 @@ cat_vmlinux() {
 	hdroff="$4"
 
 	off=`get_offset "$image" $header`
-	if [ "$?" != 0 ]; then
+	local ret="$?"
+	if [ "$ret" != 0 ]; then
 		# not found, exit
 		return 1
 	fi
 
-	(dd ibs="$((off+$hdroff))" skip=1 count=0 && dd bs=512k) < "$image"  2>/dev/null | $filter 2>/dev/null
+	(if [ "$off" != 0 ]; then
+	   dd ibs="$((off+hdroff))" skip=1 count=0
+	 fi &&
+	 dd bs=512k) < "$image"  2>/dev/null | $filter 2>/dev/null
+	return 0
 }
 
 get_image_linux() {