support for kfreebsd

[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 0d50b76..bb0fc96 100755 (executable)
--- a/dsa-nagios-checks/checks/dsa-check-running-kernel
+++ b/dsa-nagios-checks/checks/dsa-check-running-kernel
@@ -3,9 +3,10 @@
 # Check if the running kernel has the same version string as the on-disk
 # kernel image.
 
-# Copyright 2008,2009 Peter Palfrader
+# Copyright 2008,2009,2011 Peter Palfrader
 # Copyright 2009 Stephen Gran
 # Copyright 2010 Uli Martens
+# Copyright 2011 Alexander Reichle-Schmehl
 #
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
@@ -48,7 +49,7 @@ get_offset() {
 get_avail() {
        # This is wrong, but leaves room for when we have to care for machines running
        # myfirstunix-image-0.1-dsa-arm
-       local prefix=linux
+       local prefix="$1"; shift
 
        local kervers=$(uname -r)
 
@@ -118,7 +119,7 @@ get_avail() {
        return 1
 }
 
-get_image() {
+get_image_linux() {
        local image GZHDR1 GZHDR2 LZHDR off
 
        image="$1"
@@ -152,19 +153,50 @@ get_image() {
        exit 1
 }
 
+
+freebsd_check_running_version() {
+       local imagefile="$1"; shift
+
+       local r="$(uname -r)"
+       local v="$(uname -v| sed -e 's/^#[0-9]*/&:/')"
+
+       local q='@\(#\)FreeBSD '"$r $v"
+
+       if zcat "$imagefile" | strings | egrep -q "$q"; then
+               echo "OK"
+       else
+               echo "not OK"
+       fi
+}
+
 searched=""
 for on_disk in \
        "/boot/vmlinuz-`uname -r`"\
-       "/boot/vmlinux-`uname -r`"; do
+       "/boot/vmlinux-`uname -r`"\
+       "/boot/kfreebsd-`uname -r`.gz"; 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 $UNKNOWN
+               if [ ! -x "$(which strings)" ]; then
+                       echo "UNKNOWN: 'strings' command missing, perhaps install binutils?"
+                       exit $UNKNOWN
+               fi
+               if [ "${on_disk/vmlinu}" != "$on_disk" ]; then
+                       on_disk_version="`get_image_linux "$on_disk" | strings | grep 'Linux version' | head -n1`"
+                       if [ -x /usr/bin/lsb_release ] ; then
+                               vendor=$(lsb_release -i -s)
+                               if [ -n "$vendor" ] && [ "xDebian" != "x$vendor" ] ; then
+                                       on_disk_version=$( echo $on_disk_version|sed -e "s/ ($vendor [[:alnum:]\.-]\+ [[:alnum:]\.]\+)//")
+                               fi
+                       fi
+                       [ -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 $UNKNOWN
+               else
+                       on_disk_version="$(zcat $on_disk | strings | grep Debian | head -n 1 | sed -e 's/Debian [[:alnum:]]\+ (\(.*\))/\1/')"
+               fi
        fi
        searched="$searched $on_disk"
 done
@@ -174,22 +206,37 @@ if ! [ -e "$on_disk" ]; then
        exit $WARNING
 fi
 
+if [ "$(uname -s)" = "Linux" ]; then
+       running_version="`cat /proc/version`"
+       if [ -z "$running_version" ] ; then
+               echo "UNKNOWN: Failed to get a version string from running system"
+               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
+       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 $WARNING
-fi
+       ret="$(get_avail linux)"
+       if [ $? = 1 ]; then
+               echo "WARNING: Kernel needs upgrade [$ret]"
+               exit $WARNING
+       fi
+else
+       image_current=$(freebsd_check_running_version $on_disk)
+       running_version="`uname -s` `uname -r` `uname -v`"
+       if [ "$image_current" != "OK" ]; then
+               approx_time="$(date -d "@`stat -c '%Y' "$on_disk"`" +"%Y-%m-%d %H:%M:%S")"
+               echo "WARNING: Currently running kernel ($running_version) does not match on disk image (~ $approx_time)"
+               exit $WARNING;
+       fi
 
-ret="$(get_avail)"
-if [ $? = 1 ]; then
-       echo "WARNING: Kernel needs upgrade [$ret]"
-       exit $WARNING
+       ret="$(get_avail linux)"
+       if [ $? = 1 ]; then
+               echo "WARNING: Kernel needs upgrade [$ret]"
+               exit $WARNING
+       fi
 fi
 
 echo "OK: Running kernel matches on disk image: [$running_version]"