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package modules; # $Id: modules.pm 269880 2010-06-04 14:01:44Z pterjan $
use strict;
use common;
use detect_devices;
use run_program;
use log;
use list_modules;
use modules::any_conf;
sub modules_descriptions() {
my $f = '/lib/modules/' . c::kernel_version() . '/modules.description';
map { my ($m, $d) = /(\S+)\s+(.*)/; $m =~ s/-/_/g; ($m => $d) } cat_($f);
}
sub module2description { +{ modules_descriptions() }->{$_[0]} }
sub category2modules_and_description {
my ($categories) = @_;
my %modules_descriptions = modules_descriptions();
map { $_ => $modules_descriptions{$_} } category2modules($categories);
}
my %mappings_24_26 = (
"usb_ohci" => "ohci_hcd",
"usb_uhci" => "uhci_hcd",
"uhci" => "uhci_hcd",
"printer" => "usblp",
"bcm4400" => "b44",
"3c559" => "3c359",
"3c90x" => "3c59x",
"dc395x_trm" => "dc395x",
);
my %mappings_26_24 = reverse %mappings_24_26;
$mappings_26_24{'uhci_hcd'} = 'usb_uhci';
my @parallel_zip_modules = qw(imm ppa);
sub mapping_24_26 {
my ($modname) = @_;
$mappings_24_26{$modname} || $modname;
}
sub mapping_26_24 {
my ($modname) = @_;
$mappings_26_24{$modname} || $modname;
}
sub cond_mapping_24_26 {
my ($modname) = @_;
$mappings_24_26{$modname} || list_modules::filename2modname($modname);
}
sub module_is_available {
my ($module) = @_;
defined list_modules::modname2filename($module);
}
#-###############################################################################
#- module loading
#-###############################################################################
# handles dependencies
sub load_raw {
my ($lm, $h_options) = @_;
# try to detect built-in modules by looking at /sys/module
# unfortunately it does not work for all modules eg :
# - networks protocols like af_packet
# - filesystems
foreach my $mod (@$lm) {
$mod =~ s/-/_/g;
if (-d "/sys/module/$mod") {
log::l("$mod already loaded");
} elsif ($mod =~ /af_packet/) {
if (-f "/proc/net/packet") {
log::l("$mod already loaded");
} else {
@$l = (@$l, $mod);
}
} elsif (cat_("/proc/filesystems") =~ /$mod/) {
log::l("$mod already loaded");
} elsif ($mod =~ /serial/) {
# hack ... must find who tries to load the module serial
} else {
@$l = (@$l, $mod);
}
}
if ($::testing || $::local_install) {
log::l("i would load module $_ ($h_options->{$_})") foreach @$l;
} elsif ($::isInstall) {
load_raw_install($l, $h_options);
} else {
run_program::run('/sbin/modprobe', $_, split(' ', $h_options->{$_}))
or !run_program::run('/sbin/modprobe', '-n', $_) #- ignore missing modules
or die "insmod'ing module $_ failed" foreach @$l;
}
if (any { /^(mousedev|printer)$/ } @$l) {
sleep 2;
} elsif (member('usb_storage', @$l)) {
#- usb_storage is only modprobed when we know there is some scsi devices
#- so trying hard to wait for devices to be detected
#- first sleep the minimum time usb-stor-scan takes
sleep 5; #- 5 == /sys/module/usb_storage/parameters/delay_use
# then wait for usb-stor-scan to complete
my $retry = 0;
while ($retry++ < 10) {
fuzzy_pidofs('usb-stor-scan') or last;
sleep 1;
log::l("waiting for usb_storage devices to appear (retry = $retry)");
}
}
}
sub load_with_options {
my ($l, $h_options) = @_;
my @l = map {
if_(member($_, 'plip', @parallel_zip_modules), 'parport_pc'),
if_($_ eq 'vfat', 'nls_cp437', 'nls_iso8859_1'),
if_($_ eq 'btrfs', 'crc32c', 'crc32c-intel'),
dependencies_closure(cond_mapping_24_26($_));
} @$l;
@l = remove_loaded_modules(@l) or return;
my %options = map { cond_mapping_24_26($_) => $h_options->{$_} } keys %$h_options;
load_raw(\@l, \%options);
}
sub load {
my (@l) = @_;
load_with_options(\@l, {});
}
# eg: load_and_configure($modules_conf, 'bt878', [ bttv => 'no_overlay=1' ])
sub load_and_configure {
my ($conf, $module, $o_options) = @_;
my @l = remove_loaded_modules(dependencies_closure(cond_mapping_24_26($module)));
load_raw(\@l, { cond_mapping_24_26($module) => $o_options });
if (member($module, @parallel_zip_modules)
&& ! -d "/proc/sys/dev/parport/parport0/devices/$module") {
log::l("$module loaded but is not useful, removing");
unload($module);
return;
}
$conf->set_options($module, $o_options) if $o_options;
when_load($conf, $module);
}
sub unload {
if ($::testing) {
log::l("rmmod $_") foreach @_;
} else {
run_program::run("rmmod", $_) foreach @_;
}
}
sub load_category {
my ($conf, $category, $o_wait_message) = @_;
my @try_modules = (
if_($category =~ /scsi/,
if_(detect_devices::usbStorage(), 'usb_storage'),
),
arch() =~ /ppc/ ? (
if_($category =~ /scsi/,
if_(detect_devices::has_mesh(), 'mesh'),
if_(detect_devices::has_53c94(), 'mac53c94'),
),
if_($category =~ /net/, 'bmac', 'gmac', 'mace', 'airport'),
) : (),
);
my @l = (
(map {
my $other = { ahci => 'ata_piix', ata_piix => 'ahci' }->{$_->{driver}};
$_->{try} = 1 if $other;
($_, if_($other, { %$_, driver => $other }));
} detect_devices::probe_category($category)),
(map { { driver => $_, description => $_, try => 1 } } @try_modules),
);
foreach (@l) {
$o_wait_message->($_->{description}, $_->{driver}) if $o_wait_message;
eval { load_and_configure($conf, $_->{driver}, $_->{options}) };
$_->{error} = $@;
$_->{try} = 1 if member($_->{driver}, 'hptraid', 'ohci1394'); #- do not warn when this fails
}
eval { load_and_configure($conf, 'ide_generic') } if $category eq 'disk/ide';
grep { !($_->{error} && $_->{try}) } @l;
}
sub load_parallel_zip {
my ($conf) = @_;
arch() !~ /ppc/ or return;
grep {
eval { load_and_configure($conf, $_); 1 };
} @parallel_zip_modules;
}
#-###############################################################################
#- modules.conf functions
#-###############################################################################
sub write_preload_conf {
my ($conf) = @_;
my @l;
my $is_laptop = detect_devices::isLaptop();
my $manufacturer = detect_devices::dmidecode_category('System')->{Manufacturer};
push @l, 'scsi_hostadapter' if $conf->get_probeall('scsi_hostadapter');
push @l, detect_devices::probe_name('Module');
push @l, 'nvram' if $is_laptop;
push @l, map { $_->{driver} } detect_devices::probe_category($_) foreach qw(multimedia/dvb multimedia/tv various/agpgart various/laptop input/joystick various/crypto disk/card_reader);
push @l, 'padlock-aes', 'padlock-sha' if cat_("/proc/cpuinfo") =~ /rng_en/;
push @l, 'evdev' if detect_devices::hasTouchpad();
push @l, 'evdev' if any { $_->{HWHEEL} } detect_devices::getInputDevices();
push @l, 'hdaps' if $is_laptop && $manufacturer eq 'LENOVO';
append_to_modules_loaded_at_startup("$::prefix/etc/modprobe.preload", @l);
}
sub append_to_modules_loaded_at_startup_for_all_kernels {
append_to_modules_loaded_at_startup($_, @_) foreach "$::prefix/etc/modprobe.preload";
}
sub append_to_modules_loaded_at_startup {
my ($file, @l) = @_;
my $l = join '|', map { '^\s*' . $_ . '\s*$' } @l;
log::l("to put in $file ", join(", ", @l));
substInFile {
$_ = '' if $l && /$l/;
$_ .= join '', map { "$_\n" } @l if eof;
} $file;
}
sub set_preload_modules {
my ($service, @modules) = @_;
my $preload_file = "$::prefix/etc/modprobe.preload.d/$service";
if (@modules) {
output_p($preload_file, join("\n", @modules, ''));
} else {
unlink($preload_file);
}
eval { load(@modules) } if @modules && !$::isInstall;
}
#-###############################################################################
#- internal functions
#-###############################################################################
sub loaded_modules() {
map { /(\S+)/ } cat_("/proc/modules");
}
sub remove_loaded_modules {
my (@l) = @_;
difference2([ uniq(@l) ], [ map { my $s = $_; $s =~ s/_/-/g; $s, $_ } loaded_modules() ]);
}
sub read_already_loaded {
my ($conf) = @_;
when_load($conf, $_) foreach reverse loaded_modules();
}
sub when_load {
my ($conf, $name) = @_;
if (my $category = module2category($name)) {
when_load_category($conf, $name, $category);
}
if (my @above = $conf->get_above($name)) {
load(@above); #- eg: for snd-pcm-oss set by set_sound_slot()
}
}
sub when_load_category {
my ($conf, $name, $category) = @_;
if ($category =~ m,disk/ide,) {
$conf->add_probeall('ide-controller', $name);
eval { load('ide_gd_mod') };
} elsif ($category =~ m,disk/(scsi|hardware_raid|sata|firewire),) {
$conf->add_probeall('scsi_hostadapter', $name);
eval { load('sd_mod') };
} elsif ($category eq 'bus/usb') {
$conf->add_probeall('usb-interface', $name);
-f '/proc/bus/usb/devices' or eval {
require fs::mount; fs::mount::usbfs('');
#- ensure keyboard is working, the kernel must do the job the BIOS was doing
sleep 4;
load("usbhid") if detect_devices::usbKeyboards();
};
} elsif ($category eq 'bus/firewire') {
$conf->set_alias('ieee1394-controller', $name);
} elsif ($category =~ /sound/) {
my $sound_alias = find { /^sound-slot-[0-9]+$/ && $conf->get_alias($_) eq $name } $conf->modules;
$sound_alias ||= 'sound-slot-0';
$conf->set_sound_slot($sound_alias, $name);
} elsif ($category =~ m!disk/card_reader!) {
my @modules = ('mmc_block', if_($name =~ /tifm_7xx1/, 'tifm_sd'));
$conf->set_above($name, join(' ', @modules));
}
}
#-###############################################################################
#- isInstall functions
#-###############################################################################
sub module_extension() { ".ko" }
sub extract_modules {
my ($dir, @modules) = @_;
map {
my $modname = $_;
my $path = list_modules::modname2path($modname);
my $f = $modname . module_extension();
if (-e $path) {
system("gzip -dc $path > $dir/$f") == 0
or unlink "$dir/$f";
} else {
log::l("warning: unable to get module filename for $modname (path: $path)");
}
"$dir/$f";
} @modules;
}
sub load_raw_install {
my ($l, $options) = @_;
extract_modules('/tmp', @$l);
my @failed = grep {
my $m = '/tmp/' . $_ . module_extension();
if (-e $m) {
my $stdout;
my $rc = run_program::run('/sbin/insmod', '2>', \$stdout, $m, split(' ', $options->{$_}));
log::l(chomp_($stdout)) if $stdout;
if ($rc) {
unlink $m;
'';
}
} else {
log::l("missing module $_");
'error';
}
} @$l;
die "insmod'ing module " . join(", ", @failed) . " failed" if @failed;
}
1;
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