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 2010,2012,2013 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 != $availvrs"
125 local image header filter hdroff
132 off=`get_offset "$image" $header`
134 if [ "$ret" != 0 ]; then
139 (if [ "$off" != 0 ]; then
140 dd ibs="$((off+hdroff))" skip=1 count=0
142 dd bs=512k) < "$image" 2>/dev/null | $filter 2>/dev/null
151 # gzip compressed image
152 if cat_vmlinux "$image" "\x1f\x8b\x08\x00" "zcat" 0; then return; fi
153 if cat_vmlinux "$image" "\x1f\x8b\x08\x08" "zcat" 0; then return; fi
154 # lzma compressed image
155 if cat_vmlinux "$image" "\x00\x00\x00\x02\xff" "xzcat" -1; then return; fi
156 if cat_vmlinux "$image" "\x00\x00\x00\x04\xff" "xzcat" -1; then return; fi
157 # xz compressed image
158 if cat_vmlinux "$image" "\xfd\x37\x7a\x58\x5a " "xzcat" 0; then return; fi
160 echo "ERROR: Unable to extract kernel image." 2>&1
165 freebsd_check_running_version() {
166 local imagefile="$1"; shift
168 local r="$(uname -r)"
169 local v="$(uname -v| sed -e 's/^#[0-9]*/&:/')"
171 local q='@\(#\)FreeBSD '"$r $v"
173 if zcat "$imagefile" | $STRINGS | egrep -q "$q"; then
181 if [ -x "$(which strings)" ]; then
182 STRINGS="$(which strings)"
183 elif [ -x "$(which busybox)" -a "$( echo foobar | $(which busybox) strings 2>/dev/null)" = "foobar" ]; then
184 STRINGS="$(which busybox) strings"
189 "/boot/vmlinuz-`uname -r`"\
190 "/boot/vmlinux-`uname -r`"\
191 "/boot/kfreebsd-`uname -r`.gz"; do
193 if [ -e "$on_disk" ]; then
194 if [ -z "$STRINGS" ]; then
195 echo "UNKNOWN: 'strings' command missing, perhaps install binutils or busybox?"
198 if [ "${on_disk/vmlinu}" != "$on_disk" ]; then
199 on_disk_version="`get_image_linux "$on_disk" | $STRINGS | grep 'Linux version' | head -n1`"
200 if [ -x /usr/bin/lsb_release ] ; then
201 vendor=$(lsb_release -i -s)
202 if [ -n "$vendor" ] && [ "xDebian" != "x$vendor" ] ; then
203 on_disk_version=$( echo $on_disk_version|sed -e "s/ ($vendor [[:alnum:]\.-]\+ [[:alnum:]\.]\+)//")
206 [ -z "$on_disk_version" ] || break
207 on_disk_version="`cat "$on_disk" | $STRINGS | grep 'Linux version' | head -n1`"
208 [ -z "$on_disk_version" ] || break
210 echo "UNKNOWN: Failed to get a version string from image $on_disk"
213 on_disk_version="$(zcat $on_disk | $STRINGS | grep Debian | head -n 1 | sed -e 's/Debian [[:alnum:]]\+ (\(.*\))/\1/')"
216 searched="$searched $on_disk"
219 if ! [ -e "$on_disk" ]; then
220 echo "WARNING: Did not find a kernel image (checked$searched) - I have no idea which kernel I am running"
224 if [ "$(uname -s)" = "Linux" ]; then
225 running_version="`cat /proc/version`"
226 if [ -z "$running_version" ] ; then
227 echo "UNKNOWN: Failed to get a version string from running system"
231 if [ "$running_version" != "$on_disk_version" ]; then
232 echo "WARNING: Running kernel does not match on-disk kernel image: [$running_version != $on_disk_version]"
236 ret="$(get_avail linux)"
238 echo "WARNING: Kernel needs upgrade [$ret]"
242 image_current=$(freebsd_check_running_version $on_disk)
243 running_version="`uname -s` `uname -r` `uname -v`"
244 if [ "$image_current" != "OK" ]; then
245 approx_time="$(date -d "@`stat -c '%Y' "$on_disk"`" +"%Y-%m-%d %H:%M:%S")"
246 echo "WARNING: Currently running kernel ($running_version) does not match on disk image (~ $approx_time)"
250 ret="$(get_avail linux)"
252 echo "WARNING: Kernel needs upgrade [$ret]"
257 echo "OK: Running kernel matches on disk image: [$running_version]"