# Check if the running kernel has the same version string as the on-disk
# kernel image.
-# Copyright 2008,2009 Peter Palfrader
+# Copyright 2008,2009,2011,2012,2013,2014 Peter Palfrader
# Copyright 2009 Stephen Gran
-# Copyright 2010 Uli Martens
+# Copyright 2010,2012,2013 Uli Martens
# Copyright 2011 Alexander Reichle-Schmehl
#
# Permission is hereby granted, free of charge, to any person obtaining
file="$1"
needle="$2"
+
perl -e '
undef $/;
- $i = index(<>, "'"$needle"'");
- if ($i < 0) {
- exit 1;
- };
- print $i,"\n"' < "$file"
+ $i = 0; $k=<>;
+ while (($i = index($k, "'"$needle"'", $i)) >= 0) {
+ print $i++,"\n";
+ }; ' < "$file"
}
-get_avail_linux() {
+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)
# 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 $kervers | sed -r -e 's/^2\.(4|6)\.[0-9]+([\.0-9]+?)-(.*)/2.\1-\3/')
+ if [ "${kervers#2}" != "$kervers" ]; then
+ if [ "${kervers//dsa}" != "$kervers" ]; then
+ metavers=$(echo $kervers | sed -r -e 's/^2\.(4|6)\.[0-9]+([\.0-9]+?)-(.*)/2.\1-\3/')
+ else
+ metavers=$(echo $kervers | sed -r -e 's/^2\.(4|6)\.[0-9]+-[A-Za-z0-9\.]+-(.*)/2.\1-\2/')
+ fi
else
- metavers=$(echo $kervers | sed -r -e 's/^2\.(4|6)\.[0-9]+-[A-Za-z0-9\.]+-(.*)/2.\1-\2/')
+ metavers=$(echo $kervers | sed -r -e 's/^[0-9]+\.[0-9]+(\.[0-9])?+-[A-Za-z0-9\.]+-(.*)/\2/')
fi
# Attempt to track back to a metapackage failed. bail
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
+ 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 $1}' | sort -Vu); do
+ if dpkg --compare-versions "1.$vers" gt "1.$imagename"; then
imagename=$vers
fi
done
fi
if [ "$imagename" != "${prefix}-image-${kervers}" ]; then
- if dpkg --compare-versions "$imagename" lt "${prefix}-image-${kervers}"; then
+ if dpkg --compare-versions 1."$imagename" lt 1."${prefix}-image-${kervers}"; then
return 2
fi
echo "$imagename" != "${prefix}-image-${kervers}"
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
+ local kernelversion
+ for kernelversion in $(apt-cache policy ${prefix}-image-${kervers} ${prefix}-image-${kervers}-unsigned 2>/dev/null | grep '^ Installed:' | awk '{print $2}' | grep -F -v '(none)' ); do
+ if [ "$availvrs" = "$kernelversion" ]; then
+ return 0
+ fi
+ done
echo "$kernelversion != $availvrs"
return 1
}
-get_image_linux() {
- local image GZHDR1 GZHDR2 LZHDR off
+cat_vmlinux() {
+ local image header filter hdroff
image="$1"
+ header="$2"
+ filter="$3"
+ hdroff="$4"
+
+ get_offset "$image" $header | head -n 5 | while read off; do
+ (if [ "$off" != 0 ]; then
+ dd ibs="$((off+hdroff))" skip=1 count=0
+ fi &&
+ dd bs=512k) < "$image" 2>/dev/null | $filter 2>/dev/null
+ done
+}
- GZHDR1="\x1f\x8b\x08\x00"
- GZHDR2="\x1f\x8b\x08\x08"
- LZHDR="\x00\x00\x00\x02\xff"
+get_image_linux() {
+ local image
- off=`get_offset "$image" $GZHDR1`
- [ "$?" != "0" ] && off="-1"
- if [ "$off" -eq "-1" ]; then
- off=`get_offset "$image" $GZHDR2`
- [ "$?" != "0" ] && off="-1"
- fi
- if [ "$off" -eq "0" ]; then
- zcat < "$image"
- return
- elif [ "$off" -ne "-1" ]; then
- (dd ibs="$off" skip=1 count=0 && dd bs=512k) < "$image" 2>/dev/null | zcat 2>/dev/null
- return
- fi
+ image="$1"
- off=`get_offset "$image" $LZHDR`
- [ "$?" != "0" ] && off="-1"
- if [ "$off" -ne "-1" ]; then
- (dd ibs="$[off-1]" skip=1 count=0 && dd bs=512k) < "$image" 2>/dev/null | lzcat 2>/dev/null
- return
- fi
+ # gzip compressed image
+ cat_vmlinux "$image" "\x1f\x8b\x08\x00" "zcat" 0
+ cat_vmlinux "$image" "\x1f\x8b\x08\x08" "zcat" 0
+ # lzma compressed image
+ cat_vmlinux "$image" "\x00\x00\x00\x02\xff" "xzcat" -1
+ cat_vmlinux "$image" "\x00\x00\x00\x04\xff" "xzcat" -1
+ # xz compressed image
+ cat_vmlinux "$image" "\xfd\x37\x7a\x58\x5a " "xzcat" 0
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" | $STRINGS | grep -F -q "$q"; then
+ echo "OK"
+ else
+ echo "not OK"
+ fi
+}
+
+STRINGS="";
+if [ -x "$(which strings)" ]; then
+ STRINGS="$(which strings)"
+elif [ -x "$(which busybox)" -a "$( echo foobar | $(which busybox) strings 2>/dev/null)" = "foobar" ]; then
+ STRINGS="$(which busybox) strings"
+fi
+
searched=""
for on_disk in \
"/boot/vmlinuz-`uname -r`"\
"/boot/kfreebsd-`uname -r`.gz"; do
if [ -e "$on_disk" ]; then
- if [ ! -x "$(which strings)" ]; then
- echo "UNKNOWN: 'strings' command missing, perhaps install binutils?"
+ if [ -z "$STRINGS" ]; then
+ echo "UNKNOWN: 'strings' command missing, perhaps install binutils or busybox?"
exit $UNKNOWN
fi
if [ "${on_disk/vmlinu}" != "$on_disk" ]; then
- on_disk_version="`get_image_linux "$on_disk" | strings | grep 'Linux version' | head -n1`"
+ 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
fi
fi
[ -z "$on_disk_version" ] || break
- on_disk_version="`cat "$on_disk" | strings | grep 'Linux version' | head -n1`"
+ 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/')"
+ on_disk_version="$(zcat $on_disk | $STRINGS | grep Debian | head -n 1 | sed -e 's/Debian [[:alnum:]]\+ (\(.*\))/\1/')"
fi
fi
searched="$searched $on_disk"
exit $WARNING
fi
- ret="$(get_avail_linux)"
+ ret="$(get_avail linux)"
if [ $? = 1 ]; then
echo "WARNING: Kernel needs upgrade [$ret]"
exit $WARNING
fi
else
- echo "No support for FreeBSD yet"
- exit $OK
+ image_current=$(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 linux)"
+ if [ $? = 1 ]; then
+ echo "WARNING: Kernel needs upgrade [$ret]"
+ exit $WARNING
+ fi
fi
echo "OK: Running kernel matches on disk image: [$running_version]"
projects / mirror / dsa-nagios.git / blobdiff