/usr/share/perl5/NeedRestart/Kernel/Linux.pm is in needrestart 1.2-8+deb8u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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;
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