--- /dev/null
+#!/bin/bash
+
+# Check if the running kernel has the same version string as the on-disk
+# kernel image.
+
+# Copyright 2008 Peter Palfrader
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+OK=0;
+WARNING=1;
+CRITICAL=2;
+UNKNOWN=3;
+
+get_offset() {
+ local file needle
+
+ file="$1"
+ needle="$2"
+ perl -e '
+ undef $/;
+ $i = index(<>, "'"$needle"'");
+ if ($i < 0) {
+ exit 1;
+ };
+ print $i,"\n"' < "$file"
+}
+
+get_image() {
+ local image GZHDR1 GZHDR2 off
+
+ image="$1"
+
+ GZHDR1="\x1f\x8b\x08\x00"
+ GZHDR2="\x1f\x8b\x08\x08"
+
+ off=`get_offset "$image" $GZHDR1`
+ [ "$?" != "0" ] && off="-1"
+ if [ "$off" -eq "-1" ]; then
+ off=`get_offset "$image" $GZHDR2`
+ [ "$?" != "0" ] && off="-1"
+ fi
+ if [ "$off" -eq "0" ]; then
+ zcat < "$image"
+ elif [ "$off" -ne "-1" ]; then
+ (dd ibs="$off" skip=1 count=0 && dd bs=512k) < "$image" 2>/dev/null | zcat 2>/dev/null
+ fi
+
+ echo "ERROR: Unable to extract kernel image." 2>&1
+ exit 1
+}
+
+on_disk="/boot/vmlinuz-`uname -r`"
+
+if ! [ -e "$on_disk" ] ; then
+ echo "WARNING: $on_disk does not exist - I have no idea which kernel I am running"
+ exit $WARN
+fi
+
+on_disk_version="`get_image $on_disk | strings | grep 'Linux version' | head -n1`"
+if [ -z "$on_disk_version" ] ; then
+ echo "UNKNOWN: Failed to get a version string from image $on_disk"
+ exit $UNKNOWN
+fi
+
+running_version="`cat /proc/version`"
+if [ -z "$running_version" ] ; then
+ echo "UNKNOWN: Failed to get a version string from running system"
+ exit $UNKNOWN
+fi
+
+if [ "$running_version" != "$on_disk_version" ]; then
+ echo "WARNING: Running kernel does not match on-disk kernel image: [$running_version != $on_disk_version]"
+ exit $WARNING
+else
+ echo "OK: Running kernel matches on disk image: [$running_version]"
+ exit $OK
+fi
projects / mirror / dsa-nagios.git / commitdiff