3 # Check if the running kernel has the same version string as the on-disk
6 # Copyright 2008,2009,2011 Peter Palfrader
7 # Copyright 2009 Stephen Gran
8 # Copyright 2010 Uli Martens
9 # Copyright 2011 Alexander Reichle-Schmehl
11 # Permission is hereby granted, free of charge, to any person obtaining
12 # a copy of this software and associated documentation files (the
13 # "Software"), to deal in the Software without restriction, including
14 # without limitation the rights to use, copy, modify, merge, publish,
15 # distribute, sublicense, and/or sell copies of the Software, and to
16 # permit persons to whom the Software is furnished to do so, subject to
17 # the following conditions:
19 # The above copyright notice and this permission notice shall be
20 # included in all copies or substantial portions of the Software.
22 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
42 $i = index(<>, "'"$needle"'");
46 print $i,"\n"' < "$file"
50 # This is wrong, but leaves room for when we have to care for machines running
51 # myfirstunix-image-0.1-dsa-arm
52 local prefix="$1"; shift
54 local kervers=$(uname -r)
58 # DSA uses kernel versions of the form 2.6.29.3-dsa-dl380-oldxeon, where
59 # Debian uses versions of the form 2.6.29-2-amd64
60 if [ "${kervers#3}" != "$kervers" ]; then
61 metavers=$(echo $kervers | sed -r -e 's/^3\.[0-9].[0-9]+-[A-Za-z0-9\.]+-(.*)/\1/')
62 elif [ "${kervers//dsa}" != "$kervers" ]; then
63 metavers=$(echo $kervers | sed -r -e 's/^2\.(4|6)\.[0-9]+([\.0-9]+?)-(.*)/2.\1-\3/')
65 metavers=$(echo $kervers | sed -r -e 's/^2\.(4|6)\.[0-9]+-[A-Za-z0-9\.]+-(.*)/2.\1-\2/')
68 # Attempt to track back to a metapackage failed. bail
69 if [ "$metavers" = "$kervers" ]; then
73 # We're just going to give up if we can't find a matching metapackage
74 # I tried being strict once, and it just caused a lot of headaches. We'll see how
75 # being lax does for us
77 local output=$(apt-cache policy ${prefix}-image-${metavers} 2>/dev/null)
78 local metaavailvers=$(echo "$output" | grep '^ Candidate:' | awk '{print $2}')
79 local metainstavers=$(echo "$output" | grep '^ Installed:' | awk '{print $2}')
81 if [ -z "$metaavailvers" ] || [ "$metaavailvers" = '(none)' ]; then
84 if [ -z "$metainstavers" ] || [ "$metainstavers" = '(none)' ]; then
88 if [ "$metaavailvers" != "$metainstavers" ] ; then
89 echo "${prefix}-image-${metavers} $metaavailvers available but $metainstavers installed"
94 # --no-all-versions show shows only the candidate
95 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 $1}' | sort -u); do
96 if dpkg --compare-versions "1.$vers" gt "1.$imagename"; then
101 if [ -z "$imagename" ] || [ "$imagename" = 0 ]; then
105 if [ "$imagename" != "${prefix}-image-${kervers}" ]; then
106 if dpkg --compare-versions 1."$imagename" lt 1."${prefix}-image-${kervers}"; then
109 echo "$imagename" != "${prefix}-image-${kervers}"
113 local availvrs=$(apt-cache policy ${imagename} 2>/dev/null | grep '^ Candidate' | awk '{print $2}')
114 local kernelversion=$(apt-cache policy ${prefix}-image-${kervers} 2>/dev/null | grep '^ Installed:' | awk '{print $2}')
116 if [ "$availvrs" = "$kernelversion" ]; then
120 echo "$kernelversion != $availvrs"
125 local image GZHDR1 GZHDR2 LZHDR off
129 GZHDR1="\x1f\x8b\x08\x00"
130 GZHDR2="\x1f\x8b\x08\x08"
131 LZHDR="\x00\x00\x00\x02\xff"
133 off=`get_offset "$image" $GZHDR1`
134 [ "$?" != "0" ] && off="-1"
135 if [ "$off" -eq "-1" ]; then
136 off=`get_offset "$image" $GZHDR2`
137 [ "$?" != "0" ] && off="-1"
139 if [ "$off" -eq "0" ]; then
142 elif [ "$off" -ne "-1" ]; then
143 (dd ibs="$off" skip=1 count=0 && dd bs=512k) < "$image" 2>/dev/null | zcat 2>/dev/null
147 off=`get_offset "$image" $LZHDR`
148 [ "$?" != "0" ] && off="-1"
149 if [ "$off" -ne "-1" ]; then
150 (dd ibs="$[off-1]" skip=1 count=0 && dd bs=512k) < "$image" 2>/dev/null | xzcat 2>/dev/null
154 echo "ERROR: Unable to extract kernel image." 2>&1
159 freebsd_check_running_version() {
160 local imagefile="$1"; shift
162 local r="$(uname -r)"
163 local v="$(uname -v| sed -e 's/^#[0-9]*/&:/')"
165 local q='@\(#\)FreeBSD '"$r $v"
167 if zcat "$imagefile" | strings | egrep -q "$q"; then
176 "/boot/vmlinuz-`uname -r`"\
177 "/boot/vmlinux-`uname -r`"\
178 "/boot/kfreebsd-`uname -r`.gz"; do
180 if [ -e "$on_disk" ]; then
181 if [ ! -x "$(which strings)" ]; then
182 echo "UNKNOWN: 'strings' command missing, perhaps install binutils?"
185 if [ "${on_disk/vmlinu}" != "$on_disk" ]; then
186 on_disk_version="`get_image_linux "$on_disk" | strings | grep 'Linux version' | head -n1`"
187 if [ -x /usr/bin/lsb_release ] ; then
188 vendor=$(lsb_release -i -s)
189 if [ -n "$vendor" ] && [ "xDebian" != "x$vendor" ] ; then
190 on_disk_version=$( echo $on_disk_version|sed -e "s/ ($vendor [[:alnum:]\.-]\+ [[:alnum:]\.]\+)//")
193 [ -z "$on_disk_version" ] || break
194 on_disk_version="`cat "$on_disk" | strings | grep 'Linux version' | head -n1`"
195 [ -z "$on_disk_version" ] || break
197 echo "UNKNOWN: Failed to get a version string from image $on_disk"
200 on_disk_version="$(zcat $on_disk | strings | grep Debian | head -n 1 | sed -e 's/Debian [[:alnum:]]\+ (\(.*\))/\1/')"
203 searched="$searched $on_disk"
206 if ! [ -e "$on_disk" ]; then
207 echo "WARNING: Did not find a kernel image (checked$searched) - I have no idea which kernel I am running"
211 if [ "$(uname -s)" = "Linux" ]; then
212 running_version="`cat /proc/version`"
213 if [ -z "$running_version" ] ; then
214 echo "UNKNOWN: Failed to get a version string from running system"
218 if [ "$running_version" != "$on_disk_version" ]; then
219 echo "WARNING: Running kernel does not match on-disk kernel image: [$running_version != $on_disk_version]"
223 ret="$(get_avail linux)"
225 echo "WARNING: Kernel needs upgrade [$ret]"
229 image_current=$(freebsd_check_running_version $on_disk)
230 running_version="`uname -s` `uname -r` `uname -v`"
231 if [ "$image_current" != "OK" ]; then
232 approx_time="$(date -d "@`stat -c '%Y' "$on_disk"`" +"%Y-%m-%d %H:%M:%S")"
233 echo "WARNING: Currently running kernel ($running_version) does not match on disk image (~ $approx_time)"
237 ret="$(get_avail linux)"
239 echo "WARNING: Kernel needs upgrade [$ret]"
244 echo "OK: Running kernel matches on disk image: [$running_version]"