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[mirror/dsa-nagios.git] / dsa-nagios-checks / checks / dsa-check-running-kernel

diff --git a/dsa-nagios-checks/checks/dsa-check-running-kernel b/dsa-nagios-checks/checks/dsa-check-running-kernel
index 1157480..ccdfd80 100755 (executable)
--- 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() {