X-Git-Url: https://git.adam-barratt.org.uk/?a=blobdiff_plain;f=dsa-nagios-checks%2Fchecks%2Fdsa-check-running-kernel;h=467c219aecbae7265a78ba1450fc5782b8187fb2;hb=707f53188e122c957988a3370ab22887d87db1e6;hp=ccdfd809d12501346b2131b79ef0e0f4d55d2b0d;hpb=a1bdffdd59f66e9687f8b5dc0582dbcd856a37bb;p=mirror%2Fdsa-nagios.git

diff --git a/dsa-nagios-checks/checks/dsa-check-running-kernel b/dsa-nagios-checks/checks/dsa-check-running-kernel
index ccdfd80..467c219 100755
--- a/dsa-nagios-checks/checks/dsa-check-running-kernel
+++ b/dsa-nagios-checks/checks/dsa-check-running-kernel
@@ -3,7 +3,7 @@
 # Check if the running kernel has the same version string as the on-disk
 # kernel image.
 
-# Copyright 2008,2009,2011 Peter Palfrader
+# Copyright 2008,2009,2011,2012,2013,2014 Peter Palfrader
 # Copyright 2009 Stephen Gran
 # Copyright 2010,2012,2013 Uli Martens
 # Copyright 2011 Alexander Reichle-Schmehl
@@ -37,13 +37,13 @@ get_offset() {
 
 	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() {
@@ -57,12 +57,14 @@ get_avail() {
 
 	# 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 [ "${kervers#3}" != "$kervers" ]; then
-		metavers=$(echo $kervers | sed -r -e 's/^3\.[0-9].[0-9]+-[A-Za-z0-9\.]+-(.*)/\1/')
-	elif [ "${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
@@ -111,11 +113,12 @@ get_avail() {
 	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
@@ -129,18 +132,12 @@ cat_vmlinux() {
 	filter="$3"
 	hdroff="$4"
 
-	off=`get_offset "$image" $header`
-	local ret="$?"
-	if [ "$ret" != 0 ]; then
-		# not found, exit
-		return 1
-	fi
-
-	(if [ "$off" != 0 ]; then
-	   dd ibs="$((off+hdroff))" skip=1 count=0
-	 fi &&
-	 dd bs=512k) < "$image"  2>/dev/null | $filter 2>/dev/null
-	return 0
+	get_offset "$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
 }
 
 get_image_linux() {
@@ -149,13 +146,13 @@ get_image_linux() {
 	image="$1"
 
 	# gzip compressed image
-	if cat_vmlinux "$image" "\x1f\x8b\x08\x00"      "zcat"   0; then return; fi
-	if cat_vmlinux "$image" "\x1f\x8b\x08\x08"      "zcat"   0; then return; fi
+	cat_vmlinux "$image" "\x1f\x8b\x08\x00"      "zcat"   0
+	cat_vmlinux "$image" "\x1f\x8b\x08\x08"      "zcat"   0
 	# lzma compressed image
-	if cat_vmlinux "$image" "\x00\x00\x00\x02\xff"  "xzcat" -1; then return; fi
-	if cat_vmlinux "$image" "\x00\x00\x00\x04\xff"  "xzcat" -1; then return; fi
+	cat_vmlinux "$image" "\x00\x00\x00\x02\xff"  "xzcat" -1
+	cat_vmlinux "$image" "\x00\x00\x00\x04\xff"  "xzcat" -1
 	# xz compressed image
-	if cat_vmlinux "$image" "\xfd\x37\x7a\x58\x5a " "xzcat"  0; then return; fi
+	cat_vmlinux "$image" "\xfd\x37\x7a\x58\x5a " "xzcat"  0
 
 	echo "ERROR: Unable to extract kernel image." 2>&1
 	exit 1
@@ -168,9 +165,9 @@ freebsd_check_running_version() {
 	local r="$(uname -r)"
 	local v="$(uname -v| sed -e 's/^#[0-9]*/&:/')"
 
-	local q='@\(#\)FreeBSD '"$r $v"
+	local q='@(#)FreeBSD '"$r $v"
 
-	if zcat "$imagefile" | $STRINGS | egrep -q "$q"; then
+	if zcat "$imagefile" | $STRINGS | grep -F -q "$q"; then
 		echo "OK"
 	else
 		echo "not OK"