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|
#!/usr/bin/perl -w
#
# generate_firmware_task
#
# Work out which firmware packages we need
# Several steps:
#
# 1. Look for packages which contain "firmware" or "microcode" in
# their package names
# 2. Check each of those packages to see if they contain files in
# /lib/firmware or /usr/lib/firmware
# 3. For those that do, output the package name into the firmware task
#
# Copyright Steve McIntyre <93sam@debian.org> 2011
# Copyright Cyril Brulebois <kibi@debian.org> 2023
#
# GPL 2
#
use strict;
use File::Basename;
my ($mirror, $codename, $archlist, $excludelist, $outfile, $localdebs, $backports);
my $date;
my $tasksdir;
my (@pkgfiles, @bp_pkgfiles);
my ($pkg, $filename, $arch);
my %seen;
my @components;
my $cpp_command;
my %excluded;
sub contains_firmware($$) {
my ($mirror, $filename) = @_;
my $count = 0;
open (PKGLISTING, "dpkg --contents $mirror/$filename |") or
die "Can't check package file $filename: $!\n";
while ($_ = <PKGLISTING>) {
$_ =~ /\.\/lib\/firmware\// and $count++;
$_ =~ /\.\/usr\/lib\/firmware\// and $count++;
}
close PKGLISTING;
if ($count) {
return 1;
} else {
return 0;
}
}
sub check_packages($$@) {
my ($use_bp, $orig_mode, @pkgfiles) = @_;
for my $pkgfile (@pkgfiles) {
open (INPKG, "\$BASEDIR/tools/catz $pkgfile |") or die "Can't read input package files: $!\n";
$/ = ''; # Browse by paragraph
while (defined($_ = <INPKG>)) {
m/^Package: (\S+)/m and $pkg = $1;
m/^Filename: (\S+)/m and $filename = $1;
if (! ($pkg =~ /(microcode|firmware)/)) {
next;
}
if (!exists $seen{$filename}) {
$seen{$filename} = 1;
# Don't include packages that we're told to exclude
if ($excluded{$pkg}) {
print STDERR " Ignoring $pkg\n";
next;
}
if (contains_firmware($mirror, $filename)) {
printf STDERR " %-35s (%s)\n", $pkg, $filename;
if ($orig_mode) {
if ($use_bp) {
print OUT "$pkg/$codename-backports\n";
} else {
print OUT "$pkg\n";
}
} else {
print "$filename $pkgfile\n";
}
}
}
}
close INPKG;
}
}
# Either the caller tells us explicitly which components to use, or we make this
# determination on our own, based on various environment variables:
sub read_env {
my $env_var = shift;
my $default = shift;
if (exists($ENV{$env_var})) {
return $ENV{$env_var};
}
# else
return $default;
}
# Either the caller tells us explicitly which components to use, or we make this
# determination on our own, based on various environment variables, just like
# tools/apt-selection does:
@components = split /\ /, read_env('FIRMWARE_COMPONENTS', '');
if (!@components) {
@components = qw(main);
if (read_env('CONTRIB', 0) == 1) {
push @components, qw(contrib);
}
if (read_env('NONFREE', 0) == 1 or read_env('EXTRANONFREE', 0) == 1 or read_env('FORCE_FIRMWARE', 0) == 1) {
push @components, (split / /, read_env('NONFREE_COMPONENTS', ''));
}
}
$codename = $ENV{'CODENAME'};
$mirror = $ENV{'MIRROR'};
$localdebs = $ENV{'LOCALDEBS'};
$backports = $ENV{'BACKPORTS'};
$archlist = shift;
$excludelist = shift;
$outfile = shift;
if (!defined($codename) || !defined($mirror) ||
!defined($excludelist) ||
!defined($archlist) || !defined($outfile)) {
die "Error in arguments\n";
}
$tasksdir = dirname($outfile);
$cpp_command = "cpp -traditional -undef -P -C -Wall -nostdinc -I$tasksdir";
foreach $arch (split(' ', $archlist)) {
for my $component (@components) {
if (defined($backports)) {
push @bp_pkgfiles, "$mirror/dists/$codename-backports/$component/binary-$arch/Packages.gz";
push @bp_pkgfiles, "$mirror/dists/$codename-backports/$component/binary-$arch/Packages.xz";
}
push @pkgfiles, "$mirror/dists/$codename/$component/binary-$arch/Packages.gz";
push @pkgfiles, "$mirror/dists/$codename/$component/binary-$arch/Packages.xz";
}
$cpp_command .= " -DARCH$arch";
}
if (defined($localdebs)) {
for my $component (@components) {
foreach $arch (split(' ', $archlist)) {
if (defined($backports)) {
push @bp_pkgfiles, "$localdebs/dists/$codename-backports/$component/binary-$arch/Packages.gz";
push @bp_pkgfiles, "$localdebs/dists/$codename-backports/$component/binary-$arch/Packages.xz";
}
push @pkgfiles, "$localdebs/dists/$codename/$component/binary-$arch/Packages.gz";
push @pkgfiles, "$localdebs/dists/$codename/$component/binary-$arch/Packages.xz";
}
}
}
# Build the hash of excluded packages
open (EXLIST, "$cpp_command $excludelist |") or
die "Can't parse exclude list: $!\n";
while (defined (my $exc = <EXLIST>)) {
chomp $exc;
$excluded{$exc} = 1;
}
close EXLIST;
# This special filename is an crude but easy way to distinguish the historical
# caller (top-level Makefile) from tools/make-firmware-image which should use
# the same logic, but is interested in the Filename for interesting firmware
# packages:
my $orig_mode = $outfile ne '--list-filenames-and-indices' ? 1 : 0;
if ($orig_mode) {
# Prepare the output file:
open (OUT, "> $outfile") or die "Can't open outfile for writing: $!\n";
$date = `date -u`;
chomp $date;
print OUT "/*\n";
print OUT " * 'firmware' task file; generated automatically by generate_firmware_task\n";
print OUT " * for \"$archlist\" on $date\n";
print OUT " * Do not edit - changes will not be preserved\n";
print OUT " */\n";
}
# Those function calls will either write the task to OUT (historical mode) or
# filenames to stdout (for make-firmware-image):
if (defined($backports)) {
check_packages(1, $orig_mode, @bp_pkgfiles);
}
check_packages(0, $orig_mode, @pkgfiles);
if ($orig_mode) {
close OUT;
}
|
