raise check interval

[mirror/dsa-nagios.git] / dsa-nagios-checks / checks / dsa-check-running-kernel

diff --git a/dsa-nagios-checks/checks/dsa-check-running-kernel b/dsa-nagios-checks/checks/dsa-check-running-kernel
index acf2edf..1157480 100755 (executable)
--- a/dsa-nagios-checks/checks/dsa-check-running-kernel
+++ b/dsa-nagios-checks/checks/dsa-check-running-kernel
@@ -5,7 +5,7 @@
 
 # Copyright 2008,2009,2011 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
@@ -121,40 +121,36 @@ get_avail() {
        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"
 
-       GZHDR1="\x1f\x8b\x08\x00"
-       GZHDR2="\x1f\x8b\x08\x08"
-       LZHDR1="\x00\x00\x00\x02\xff"
-       LZHDR2="\x00\x00\x00\x04\xff"
-
-       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) < "$image"  2>/dev/null | zcat 2>/dev/null
-               return
+       off=`get_offset "$image" $header`
+       if [ "$?" != 0 ]; then
+               # not found, exit
+               return 1
        fi
 
-       off=`get_offset "$image" $LZHDR1`
-       [ "$?" != "0" ] && off="-1"
-       if [ "$off" -eq "-1" ]; then
-               off=`get_offset "$image" $LZHDR2`
-               [ "$?" != "0" ] && off="-1"
-       fi
-       if [ "$off" -ne "-1" ]; then
-               (dd ibs="$[off-1]" skip=1 count=0 && dd bs=512k) < "$image" 2>/dev/null | xzcat 2>/dev/null
-               return
-       fi
+       (dd ibs="$((off+$hdroff))" skip=1 count=0 && dd bs=512k) < "$image"  2>/dev/null | $filter 2>/dev/null
+}
+
+get_image_linux() {
+       local image
+
+       image="$1"
+
+       # gzip compressed image
+       if cat_vmlinux "$image" "\x1f\x8b\x08\x00"      "zcat"   0; then return; fi
+       if cat_vmlinux "$image" "\x1f\x8b\x08\x08"      "zcat"   0; then return; fi
+       # lzma compressed image
+       if cat_vmlinux "$image" "\x00\x00\x00\x02\xff"  "xzcat" -1; then return; fi
+       if cat_vmlinux "$image" "\x00\x00\x00\x04\xff"  "xzcat" -1; then return; fi
+       # xz compressed image
+       if cat_vmlinux "$image" "\xfd\x37\x7a\x58\x5a " "xzcat"  0; then return; fi
 
        echo "ERROR: Unable to extract kernel image." 2>&1
        exit 1