/usr/share/perl5/NeedRestart/Kernel.pm is in needrestart 2.6-1.
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 - 2015 (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;
use strict;
use warnings;
use NeedRestart::Utils;
use Module::Find;
use POSIX qw(uname);
use constant {
NRK_UNKNOWN => 0,
NRK_NOUPGRADE => 1,
NRK_ABIUPGRADE => 2,
NRK_VERUPGRADE => 3,
};
require Exporter;
our @ISA = qw(Exporter);
our @EXPORT = qw(
nr_kernel_check
nr_kernel_vcmp
NRK_UNKNOWN
NRK_NOUPGRADE
NRK_ABIUPGRADE
NRK_VERUPGRADE
);
my $LOGPREF = '[Kernel]';
sub nr_kernel_check($$) {
my $debug = shift;
my $ui = shift;
my %vars;
my ($sysname, $nodename, $release, $version, $machine) = uname;
$vars{KVERSION} = $release;
print STDERR "$LOGPREF $sysname: kernel release $release, kernel version $version\n" if($debug);
# autoload Kernel modules
foreach my $module (findsubmod NeedRestart::Kernel) {
my @ret;
unless(eval "use $module; \@ret = ${module}::nr_kernel_check_real(\$debug, \$ui);") {
warn "Failed to load $module: $@" if($@ && $debug);
}
else {
return @ret;
}
}
return (NRK_UNKNOWN, %vars);
}
## The following version number comparing stuff was taken from Dpkg::Version.
## The code has been adopted to be usable in needrestart w/o any additional
## dependencies.
sub _nr_kversion_order {
my ($x) = @_;
if ($x eq '~') {
return -1;
} elsif ($x =~ /^\d$/) {
return $x * 1 + 1;
} elsif ($x =~ /^[A-Za-z]$/) {
return ord($x);
} else {
return ord($x) + 256;
}
}
sub _nr_kversion_strcmp($$) {
my @a = map { _nr_kversion_order($_); } split(//, shift);
my @b = map { _nr_kversion_order($_); } split(//, shift);
while (1) {
my ($a, $b) = (shift @a, shift @b);
return 0 unless(defined($a) || defined($b));
$a ||= 0; # Default order for "no character"
$b ||= 0;
return 1 if($a > $b);
return -1 if($a < $b);
}
}
sub nr_kernel_vcmp($$) {
# sort well known devel tags just as grub does
my @v = map {
my $v = $_;
$v =~ s/[._-](pre|rc|test|git|old|trunk)/~$1/g;
$v;
} @_;
my @a = split(/(?<=\d)(?=\D)|(?<=\D)(?=\d)/, shift(@v));
my @b = split(/(?<=\d)(?=\D)|(?<=\D)(?=\d)/, shift(@v));
while(1) {
my ($a, $b) = (shift @a, shift @b);
return 0 unless(defined($a) || defined($b));
$a ||= 0;
$b ||= 0;
if($a =~ /^\d+$/ && $b =~ /^\d+$/) {
my $cmp = $a <=> $b;
return $cmp if($cmp);
}
else {
my $cmp = _nr_kversion_strcmp($a, $b);
return $cmp if($cmp);
}
}
}
1;
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