1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
#!/bin/bash
# Check if the running kernel has the same version string as the on-disk
# kernel image.
# Copyright 2008 Peter Palfrader
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
OK=0;
WARNING=1;
CRITICAL=2;
UNKNOWN=3;
get_offset() {
local file needle
file="$1"
needle="$2"
perl -e '
undef $/;
$i = index(<>, "'"$needle"'");
if ($i < 0) {
exit 1;
};
print $i,"\n"' < "$file"
}
get_image() {
local image GZHDR1 GZHDR2 off
image="$1"
GZHDR1="\x1f\x8b\x08\x00"
GZHDR2="\x1f\x8b\x08\x08"
off=`get_offset "$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) < "$image" 2>/dev/null | zcat 2>/dev/null
return
fi
echo "ERROR: Unable to extract kernel image." 2>&1
exit 1
}
searched=""
for on_disk in \
"/boot/vmlinuz-`uname -r`"\
"/boot/vmlinux-`uname -r`"; do
if [ -e "$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 $UNKNOWN
fi
searched="$searched $on_disk"
done
if ! [ -e "$on_disk" ]; then
echo "WARNING: Did not find a kernel image (checked$searched) - I have no idea which kernel I am running"
exit $WARNING
fi
running_version="`cat /proc/version`"
if [ -z "$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 $WARNING
else
echo "OK: Running kernel matches on disk image: [$running_version]"
exit $OK
fi
|
