#!/bin/bash
-
-# Check if the running kernel has the same version string as the on-disk
-# kernel image.
-
-# Copyright 2008 Peter Palfrader
+# Icinga 2
+# Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org)
#
-# 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:
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
#
-# The above copyright notice and this permission notice shall be
-# included in all copies or substantial portions of the Software.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
#
-# 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"
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+
+if [ -e /etc/debian_version ]; then
+ if [ "$(lsb_release -s -i)" = "Debian" ]; then
+ latest_kernel=$(dpkg-query -W -f='${Version}' linux-image-$(uname -r))
+ current_kernel=$(uname -v | awk '{print $4}')
+
+ if [ "x$latest_kernel" != "x$current_kernel" ]; then
+ echo "A kernel upgrade is available: $(uname -r) ($latest_kernel) - currently running: $(uname -r) ($current_kernel)"
+ exit 2
+ fi
+ else
+ IFS=$'\n'
+ for pkginfo in $(dpkg-query -W -f '${Source}\t${Depends}\n' 'linux-image-*'); do
+ source=$(echo $pkginfo | cut -f1 -d$'\t')
+ if [ "$source" != "linux-meta" -a "$source" != "linux-latest" ]; then
+ continue
+ fi
+
+ depends=$(echo $pkginfo | cut -f2 -d$'\t')
+ IFS=','
+ for depend in $depends; do
+ name=$(echo $depend | awk '{print $1}')
+ if ! echo $name | grep -E linux-image-[0-9] >/dev/null; then
+ continue
+ fi
+ version=$(echo $depend | cut -f3- -d-)
+ if [ "$name" != "linux-image-$(uname -r)" ]; then
+ echo "A kernel upgrade is available: $version - currently running: $(uname -r)"
+ exit 2
+ fi
+ done
+ IFS=$'\n'
+ done
fi
- if [ "$off" -eq "0" ]; then
- zcat < "$image"
- return
- elif [ "$off" -ne "-1" ]; then
- (dd ibs="$off" skip=1 count=0 && dd bs=512k) < "$image" 2>/dev/null | zcat 2>/dev/null
- return
- fi
-
- echo "ERROR: Unable to extract kernel image." 2>&1
- exit 1
-}
-
-searched=""
-for on_disk in \
- "/boot/vmlinuz-`uname -r`"\
- "/boot/vmlinux-`uname -r`"; do
-
- if [ -e "$on_disk" ]; then
- on_disk_version="`get_image "$on_disk" | strings | grep 'Linux version' | head -n1`"
- [ -z "$on_disk_version" ] || break
- on_disk_version="`cat "$on_disk" | strings | grep 'Linux version' | head -n1`"
- [ -z "$on_disk_version" ] || break
-
- echo "UNKNOWN: Failed to get a version string from image $on_disk"
- exit $UNKNOWN
+elif [ -e /etc/redhat-release ]; then
+ latest_kernel=`rpm -q --last kernel | head -n 1 | awk '{print $1}' | cut -f2- -d-`
+ current_kernel=`uname -r`
+ if [ "x$latest_kernel" != "x$current_kernel" ]; then
+ echo "A kernel upgrade is available: $latest_kernel - currently running: $current_kernel"
+ exit 2
fi
- searched="$searched $on_disk"
-done
-
-if ! [ -e "$on_disk" ]; then
- echo "WARNING: Did not find a kernel image (checked$searched) - I have no idea which kernel I am running"
- exit $WARNING
-fi
-
-
-running_version="`cat /proc/version`"
-if [ -z "$running_version" ] ; then
- echo "UNKNOWN: Failed to get a version string from running system"
- exit $UNKNOWN
-fi
-
-on_disk_version_ubuntu="$(echo "$on_disk_version" | sed -r 's/ \([^(]+\)$//')"
-
-if [ "$running_version" != "$on_disk_version" -a "$running_version" != "$on_disk_version_ubuntu" ]; then
- echo "WARNING: Running kernel does not match on-disk kernel image: [$running_version != $on_disk_version]"
- exit $WARNING
else
- echo "OK: Running kernel matches on disk image: [$running_version]"
- exit $OK
+ echo "Unsupported OS/distribution."
+ exit 3
fi
+
+echo "Kernel version: `uname -a`"
+exit 0
projects / icinga2 / commitdiff