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 [ "${kervers//dsa}" != "$kervers" ]; then
61 metavers=$(echo $kervers | sed -r -e 's/^2\.(4|6)\.[0-9]+([\.0-9]+?)-(.*)/2.\1-\3/')
63 metavers=$(echo $kervers | sed -r -e 's/^2\.(4|6)\.[0-9]+-[A-Za-z0-9\.]+-(.*)/2.\1-\2/')
66 # Attempt to track back to a metapackage failed. bail
67 if [ "$metavers" = "$kervers" ]; then
71 # We're just going to give up if we can't find a matching metapackage
72 # I tried being strict once, and it just caused a lot of headaches. We'll see how
73 # being lax does for us
75 local output=$(apt-cache policy ${prefix}-image-${metavers} 2>/dev/null)
76 local metaavailvers=$(echo "$output" | grep '^ Candidate:' | awk '{print $2}')
77 local metainstavers=$(echo "$output" | grep '^ Installed:' | awk '{print $2}')
79 if [ -z "$metaavailvers" ] || [ "$metaavailvers" = '(none)' ]; then
82 if [ -z "$metainstavers" ] || [ "$metainstavers" = '(none)' ]; then
86 if [ "$metaavailvers" != "$metainstavers" ] ; then
87 echo "${prefix}-image-${metavers} $metaavailvers available but $metainstavers installed"
92 # --no-all-versions show shows only the candidate
93 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
94 if dpkg --compare-versions $vers gt $imagename; then
99 if [ -z "$imagename" ] || [ "$imagename" = 0 ]; then
103 if [ "$imagename" != "${prefix}-image-${kervers}" ]; then
104 if dpkg --compare-versions "$imagename" lt "${prefix}-image-${kervers}"; then
107 echo "$imagename" != "${prefix}-image-${kervers}"
111 local availvrs=$(apt-cache policy ${imagename} 2>/dev/null | grep '^ Candidate' | awk '{print $2}')
112 local kernelversion=$(apt-cache policy ${prefix}-image-${kervers} 2>/dev/null | grep '^ Installed:' | awk '{print $2}')
114 if [ "$availvrs" = "$kernelversion" ]; then
118 echo "$kernelversion != $availvrs"
123 local image GZHDR1 GZHDR2 LZHDR off
127 GZHDR1="\x1f\x8b\x08\x00"
128 GZHDR2="\x1f\x8b\x08\x08"
129 LZHDR="\x00\x00\x00\x02\xff"
131 off=`get_offset "$image" $GZHDR1`
132 [ "$?" != "0" ] && off="-1"
133 if [ "$off" -eq "-1" ]; then
134 off=`get_offset "$image" $GZHDR2`
135 [ "$?" != "0" ] && off="-1"
137 if [ "$off" -eq "0" ]; then
140 elif [ "$off" -ne "-1" ]; then
141 (dd ibs="$off" skip=1 count=0 && dd bs=512k) < "$image" 2>/dev/null | zcat 2>/dev/null
145 off=`get_offset "$image" $LZHDR`
146 [ "$?" != "0" ] && off="-1"
147 if [ "$off" -ne "-1" ]; then
148 (dd ibs="$[off-1]" skip=1 count=0 && dd bs=512k) < "$image" 2>/dev/null | lzcat 2>/dev/null
152 echo "ERROR: Unable to extract kernel image." 2>&1
157 freebsd_check_running_version() {
158 local imagefile="$1"; shift
160 local r="$(uname -r)"
161 local v="$(uname -v| sed -e 's/^#[0-9]*/&:/')"
163 local q='@\(#\)FreeBSD '"$r $v"
165 if zcat "$imagefile" | strings | egrep -q "$q"; then
174 "/boot/vmlinuz-`uname -r`"\
175 "/boot/vmlinux-`uname -r`"\
176 "/boot/kfreebsd-`uname -r`.gz"; do
178 if [ -e "$on_disk" ]; then
179 if [ ! -x "$(which strings)" ]; then
180 echo "UNKNOWN: 'strings' command missing, perhaps install binutils?"
183 if [ "${on_disk/vmlinu}" != "$on_disk" ]; then
184 on_disk_version="`get_image_linux "$on_disk" | strings | grep 'Linux version' | head -n1`"
185 if [ -x /usr/bin/lsb_release ] ; then
186 vendor=$(lsb_release -i -s)
187 if [ -n "$vendor" ] && [ "xDebian" != "x$vendor" ] ; then
188 on_disk_version=$( echo $on_disk_version|sed -e "s/ ($vendor [[:alnum:]\.-]\+ [[:alnum:]\.]\+)//")
191 [ -z "$on_disk_version" ] || break
192 on_disk_version="`cat "$on_disk" | strings | grep 'Linux version' | head -n1`"
193 [ -z "$on_disk_version" ] || break
195 echo "UNKNOWN: Failed to get a version string from image $on_disk"
198 on_disk_version="$(zcat $on_disk | strings | grep Debian | head -n 1 | sed -e 's/Debian [[:alnum:]]\+ (\(.*\))/\1/')"
201 searched="$searched $on_disk"
204 if ! [ -e "$on_disk" ]; then
205 echo "WARNING: Did not find a kernel image (checked$searched) - I have no idea which kernel I am running"
209 if [ "$(uname -s)" = "Linux" ]; then
210 running_version="`cat /proc/version`"
211 if [ -z "$running_version" ] ; then
212 echo "UNKNOWN: Failed to get a version string from running system"
216 if [ "$running_version" != "$on_disk_version" ]; then
217 echo "WARNING: Running kernel does not match on-disk kernel image: [$running_version != $on_disk_version]"
221 ret="$(get_avail linux)"
223 echo "WARNING: Kernel needs upgrade [$ret]"
227 image_current=$(freebsd_check_running_version $on_disk)
228 running_version="`uname -s` `uname -r` `uname -v`"
229 if [ "$image_current" != "OK" ]; then
230 approx_time="$(date -d "@`stat -c '%Y' "$on_disk"`" +"%Y-%m-%d %H:%M:%S")"
231 echo "WARNING: Currently running kernel ($running_version) does not match on disk image (~ $approx_time)"
235 ret="$(get_avail linux)"
237 echo "WARNING: Kernel needs upgrade [$ret]"
242 echo "OK: Running kernel matches on disk image: [$running_version]"