# Check if the running kernel has the same version string as the on-disk
# kernel image.
-# Copyright 2008 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
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)
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" = "$kervers" ]; then
+ return 2
+ fi
+
# We're just going to give up if we can't find a matching metapackage
# I tried being strict once, and it just caused a lot of headaches. We'll see how
# being lax does for us
return 2
fi
+ if [ "$metaavailvers" != "$metainstavers" ] ; then
+ echo "${prefix}-image-${metavers} $metaavailvers available but $metainstavers installed"
+ return 1
+ fi
+
local imagename=0
- for vers in $(apt-cache --no-all-versions depends ${prefix}-image-${metavers} | grep Depends | awk '{print $2}' | sort -u); do
+ # --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
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
return 1
}
-
-get_image() {
- local image GZHDR1 GZHDR2 off
+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
}
+
+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
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]"
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