45 lines
2.0 KiB
Perl
45 lines
2.0 KiB
Perl
package DDG::Goodie::KernelTaint;
|
|
# ABSTRACT: Parses and explains the OR'd values of /proc/sys/kernel/tainted
|
|
|
|
use strict;
|
|
use DDG::Goodie;
|
|
|
|
zci answer_type => 'kernel_taint';
|
|
zci is_cached => 1;
|
|
|
|
triggers any => 'kernel taint', 'linux taint', 'linux kernel taint', 'taint kernel' , 'taint linux', 'taint linux kernel', '/proc/sys/kernel/tainted', 'proc sys kernel tainted';
|
|
|
|
my %descriptions = (
|
|
1 => 'A module with a non-GPL license has been loaded, this includes modules with no license. Set by modutils >= 2.4.9 and module-init-tools.',
|
|
2 => 'A module was force loaded by insmod -f. Set by modutils >= 2.4.9 and module-init-tools.',
|
|
4 => 'Unsafe SMP processors: SMP with CPUs not designed for SMP.',
|
|
8 => 'A module was forcibly unloaded from the system by rmmod -f.',
|
|
16 => 'A hardware machine check error occurred on the system.',
|
|
32 => 'A bad page was discovered on the system.',
|
|
64 => 'The user has asked that the system be marked "tainted". This could be because they are running software that directly modifies the hardware, or for other reasons.',
|
|
128 => 'The system has died.',
|
|
256 => 'The ACPI DSDT has been overridden with one supplied by the user instead of using the one provided by the hardware.',
|
|
512 => 'A kernel warning has occurred.',
|
|
1024 => 'A module from drivers/staging was loaded.',
|
|
2048 => 'The system is working around a severe firmware bug.',
|
|
4096 => 'An out-of-tree module has been loaded.',
|
|
);
|
|
|
|
handle remainder => sub {
|
|
|
|
s/description|error|\s+//g;
|
|
|
|
return unless /^\d+$/;
|
|
|
|
my $mask = shift;
|
|
|
|
my @taints = grep { $_ } map {
|
|
$mask & 1<<$_ ? "$descriptions{2**$_}" : '';
|
|
} (0..(scalar keys %descriptions)-1);
|
|
|
|
return join("\n", map { "- $_" } @taints), html => '<ul>' . join('', map { "<li>$_</li>" } @taints). '</ul>'
|
|
. '<a href="https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/sysctl/kernel.txt">Read more</a>';
|
|
};
|
|
|
|
1;
|