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# binaries/large-file-support -- lintian check script -*- perl -*-
# Copyright (C) 1998 Christian Schwarz and Richard Braakman
# Copyright (C) 2012 Kees Cook
# Copyright (C) 2017-2020 Chris Lamb <lamby@debian.org>
# Copyright (C) 2021 Felix Lechner
#
# 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 program. If not, you can find it on the World Wide
# Web at https://www.gnu.org/copyleft/gpl.html, or write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1301, USA.
package Lintian::Check::Binaries::LargeFileSupport;
use v5.20;
use warnings;
use utf8;
use List::SomeUtils qw(any);
use Moo;
use namespace::clean;
with 'Lintian::Check';
has ARCH_REGEX => (
is => 'rw',
lazy => 1,
default => sub {
my ($self) = @_;
my %arch_regex;
my $data = $self->data->load('binaries/arch-regex', qr/\s*\~\~/);
for my $architecture ($data->all) {
my $pattern = $data->value($architecture);
$arch_regex{$architecture} = qr{$pattern};
}
return \%arch_regex;
}
);
has LFS_SYMBOLS => (
is => 'rw',
lazy => 1,
default => sub {
my ($self) = @_;
return $self->data->load('binaries/lfs-symbols');
}
);
sub visit_installed_files {
my ($self, $item) = @_;
return
unless $item->is_file;
# The LFS check only works reliably for ELF files due to the
# architecture regex.
return
unless $item->is_elf;
# Only 32bit ELF binaries can lack LFS.
return
unless $item->file_type =~ $self->ARCH_REGEX->{'32'};
return
if $item->name =~ m{^usr/lib/debug/};
my @unresolved_symbols;
for my $symbol (@{$item->elf->{SYMBOLS} // [] }) {
# ignore if defined in the binary
next
unless $symbol->section eq 'UND';
push(@unresolved_symbols, $symbol->name);
}
# Using a 32bit only interface call, some parts of the
# binary are built without LFS
$self->pointed_hint('binary-file-built-without-LFS-support',$item->pointer)
if any { $self->LFS_SYMBOLS->recognizes($_) } @unresolved_symbols;
return;
}
1;
# Local Variables:
# indent-tabs-mode: nil
# cperl-indent-level: 4
# End:
# vim: syntax=perl sw=4 sts=4 sr et
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