# Check if the running kernel has the same version string as the on-disk
# kernel image.
-# Copyright 2008 Peter Palfrader
+# Copyright 2008,2009 Peter Palfrader
+# Copyright 2009 Stephen Gran
+# Copyright 2010 Uli Martens
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
print $i,"\n"' < "$file"
}
-get_image() {
- local image GZHDR1 GZHDR2 off
+get_avail_linux() {
+ # 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 kervers=$(uname -r)
+
+ local metavers=''
+
+ # DSA uses kernel versions of the form 2.6.29.3-dsa-dl380-oldxeon, where
+ # Debian uses versions of the form 2.6.29-2-amd64
+ if [ "${kervers//dsa}" != "$kervers" ]; then
+ metavers=$(echo $kervers | sed -r -e 's/^2\.(4|6)\.[0-9]+([\.0-9]+?)-(.*)/2.\1-\3/')
+ else
+ metavers=$(echo $kervers | sed -r -e 's/^2\.(4|6)\.[0-9]+-[A-Za-z0-9\.]+-(.*)/2.\1-\2/')
+ fi
+
+ # Attempt to track back to a metapackage failed. bail
+ if [ "$metavers" = "$kervers" ]; then
+ return 2
+ fi
+
+ # We're just going to give up if we can't find a matching metapackage
+ # I tried being strict once, and it just caused a lot of headaches. We'll see how
+ # being lax does for us
+
+ local output=$(apt-cache policy ${prefix}-image-${metavers} 2>/dev/null)
+ local metaavailvers=$(echo "$output" | grep '^ Candidate:' | awk '{print $2}')
+ local metainstavers=$(echo "$output" | grep '^ Installed:' | awk '{print $2}')
+
+ if [ -z "$metaavailvers" ] || [ "$metaavailvers" = '(none)' ]; then
+ return 2
+ fi
+ if [ -z "$metainstavers" ] || [ "$metainstavers" = '(none)' ]; then
+ return 2
+ fi
+
+ if [ "$metaavailvers" != "$metainstavers" ] ; then
+ echo "${prefix}-image-${metavers} $metaavailvers available but $metainstavers installed"
+ return 1
+ fi
+
+ local imagename=0
+ # --no-all-versions show shows only the candidate
+ for vers in $(apt-cache --no-all-versions show ${prefix}-image-${metavers} | sed -n 's/^Depends: //p' | tr ',' '\n' | tr -d ' ' | grep ${prefix}-image | awk '{print $1}' | sort -u); do
+ if dpkg --compare-versions $vers gt $imagename; then
+ imagename=$vers
+ fi
+ done
+
+ if [ -z "$imagename" ] || [ "$imagename" = 0 ]; then
+ return 2
+ fi
+
+ if [ "$imagename" != "${prefix}-image-${kervers}" ]; then
+ if dpkg --compare-versions "$imagename" lt "${prefix}-image-${kervers}"; then
+ return 2
+ fi
+ echo "$imagename" != "${prefix}-image-${kervers}"
+ return 1
+ fi
+
+ local availvrs=$(apt-cache policy ${imagename} 2>/dev/null | grep '^ Candidate' | awk '{print $2}')
+ local kernelversion=$(apt-cache policy ${prefix}-image-${kervers} 2>/dev/null | grep '^ Installed:' | awk '{print $2}')
+
+ if [ "$availvrs" = "$kernelversion" ]; then
+ return 0
+ fi
+
+ echo "$kernelversion != $availvrs"
+ return 1
+}
+
+get_image_linux() {
+ local image GZHDR1 GZHDR2 LZHDR off
image="$1"
GZHDR1="\x1f\x8b\x08\x00"
GZHDR2="\x1f\x8b\x08\x08"
+ LZHDR="\x00\x00\x00\x02\xff"
off=`get_offset "$image" $GZHDR1`
[ "$?" != "0" ] && off="-1"
return
fi
+ off=`get_offset "$image" $LZHDR`
+ [ "$?" != "0" ] && off="-1"
+ if [ "$off" -ne "-1" ]; then
+ (dd ibs="$[off-1]" skip=1 count=0 && dd bs=512k) < "$image" 2>/dev/null | lzcat 2>/dev/null
+ return
+ fi
+
echo "ERROR: Unable to extract kernel image." 2>&1
exit 1
}
searched=""
for on_disk in \
"/boot/vmlinuz-`uname -r`"\
- "/boot/vmlinux-`uname -r`"; do
+ "/boot/vmlinux-`uname -r`"\
+ "/boot/kfreebsd-`uname -r`.gz"; do
if [ -e "$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`"
+ [ -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
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 $WARNING
+ ret="$(get_avail_linux)"
+ if [ $? = 1 ]; then
+ echo "WARNING: Kernel needs upgrade [$ret]"
+ exit $WARNING
+ fi
else
- echo "OK: Running kernel matches on disk image: [$running_version]"
+ echo "No support for FreeBSD yet"
exit $OK
fi
+
+echo "OK: Running kernel matches on disk image: [$running_version]"
+exit $OK
projects / mirror / dsa-nagios.git / blobdiff