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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
# needrestart - Restart daemons after library updates.
#
# Authors:
# Thomas Liske <thomas@fiasko-nw.net>
#
# Copyright Holder:
# 2013 - 2014 (C) Thomas Liske [http://fiasko-nw.net/~thomas/]
#
# License:
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this package; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
package NeedRestart::Kernel::Linux;
use strict;
use warnings;
use NeedRestart::Utils;
use NeedRestart::Kernel;
use NeedRestart::Strings;
use POSIX qw(uname);
use Sort::Naturally;
use Fcntl qw(SEEK_SET);
require Exporter;
our @ISA = qw(Exporter);
our @EXPORT = qw(
nr_linux_version_x86
);
my $LOGPREF = '[Kernel/Linux]';
sub nr_linux_version_x86($$) {
my $debug = shift;
my $fn = shift;
my $fh;
unless(open($fh, '<', $fn)) {
print STDERR "$LOGPREF Could not open kernel image ($fn): $!\n" if($debug);
return undef;
}
binmode($fh);
my $buf;
# get kernel_version address from header
seek($fh, 0x20e, SEEK_SET);
read($fh, $buf, 2);
my $offset = unpack 'v', $buf;
# get kernel_version string
seek($fh, 0x200 + $offset, SEEK_SET);
read($fh, $buf, 128);
close($fh);
$buf =~ s/\000.*$//;
return undef if($buf eq '');
unless($buf =~ /^\d+\.\d+/) {
print STDERR "$LOGPREF Got garbage from kernel image header ($fn): '$buf'\n" if($debug);
return undef;
}
return $buf;
}
sub nr_kernel_check_real($$) {
my $debug = shift;
my $ui = shift;
my %vars;
my ($sysname, $nodename, $release, $version, $machine) = uname;
$vars{KVERSION} = $release;
die "$LOGPREF Not running on Linux!\n" unless($sysname eq 'Linux');
my @kfiles = reverse nsort </boot/vmlinu*>;
$ui->progress_prep(scalar @kfiles, 'Scanning kernel images...');
my %kernels;
foreach my $fn (@kfiles) {
$ui->progress_step;
my $stat = nr_stat($fn);
unless(defined($stat)) {
print STDERR "$LOGPREF could not stat(2) on $fn\n" if($debug);
next;
}
if($stat->{size} < 1000000) {
print STDERR "$LOGPREF $fn seems to be too small\n" if($debug);
next;
}
my $verstr = nr_linux_version_x86($debug, $fn);
unless(defined($verstr)) {
$verstr = nr_strings($debug, qr/^(Linux version )?\d\.\d+\S*\s/, $fn);
unless(defined($verstr)) {
print STDERR "$LOGPREF Could not get version string from $fn.\n" if($debug);
next;
}
}
my $iversion = $verstr;
$iversion =~ s/^Linux version //;
chomp($iversion);
$iversion =~ s/\s.+$//;
$kernels{$iversion} = (index($verstr, $release) != -1 && index($verstr, $version) != -1);
print STDERR "$LOGPREF $fn => $verstr [$iversion]".($kernels{$iversion} ? '*' : '')."\n" if($debug);
}
$ui->progress_fin;
unless(scalar keys %kernels) {
print STDERR "$LOGPREF Did not find any kernel images.\n" if($debug);
return (NRK_UNKNOWN, %vars);
}
($vars{EVERSION}) = reverse sort { nr_kernel_vcmp($a, $b); } keys %kernels;
print STDERR "$LOGPREF Expected kernel version: $vars{EVERSION}\n" if($debug);
return (NRK_VERUPGRADE, %vars) if($vars{KVERSION} ne $vars{EVERSION});
return (NRK_ABIUPGRADE, %vars) unless($kernels{$release});
return (NRK_NOUPGRADE, %vars);
}
1;
|
