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|
package Iurt::Chroot;
use strict;
use base qw(Exporter);
use MDV::Distribconf::Build;
use MDK::Common;
use Iurt::Process qw(sudo);
use Iurt::Config qw(dump_cache_par);
use Iurt::Util qw(plog);
use File::Temp 'mktemp';
use File::Path 'mkpath';
use urpm;
our @EXPORT = qw(
clean_chroot_tmp
clean_all_chroot_tmp
clean_chroot
dump_rpmmacros
add_local_user
create_temp_chroot
remove_chroot
create_chroot
create_build_chroot
);
my $sudo = '/usr/bin/sudo';
=head2 clean_chroot($chroot, $run, $only_clean)
Create or clean a chroot
I<$chroot> chroot path
I<$run> is the running environment
I<%only_clean> only clean the chroot, do not create a new one
Return true.
=cut
sub clean_chroot {
my ($chroot, $chroot_tar, $run, $config, $o_only_clean) = @_;
plog('DEBUG', "clean chroot");
if (-d $chroot) {
_clean_mounts($run, $config, $chroot);
if (-d "$chroot/urpmi_medias/") {
sudo($config, "--umount", "$chroot/urpmi_medias");
}
# Do not run rm if there is something still mounted there
open(my $FP, "/proc/mounts") or die $!;
my @list = grep { /$chroot/ } <$FP>;
close($FP);
if (@list >= 0) {
# Still referenced
return 1;
}
sudo($config, '--rm', '-r', $chroot);
}
return 1 if $o_only_clean;
if (!create_build_chroot($chroot, $chroot_tar, $run, $config)) {
plog('ERROR', "Failed to create chroot");
return;
}
if (!dump_rpmmacros($run, $config, "$chroot/home/builder/.rpmmacros")) {
plog('ERROR', "Failed to dump macros");
return;
}
if (!sudo($config, '--bindmount', "/proc", "$chroot/proc")) {
plog('ERROR', "Failed to mount proc");
return;
}
if (!sudo($config, '--bindmount', "/dev/pts", "$chroot/dev/pts")) {
plog('ERROR', "Failed to mount dev/pts");
sudo($config, "--umount", "$chroot/proc");
return;
}
if ($run->{icecream}) {
system("$sudo mkdir -p $chroot/var/cache/icecream");
if (!sudo($config, '--bindmount', "/var/cache/icecream", "$chroot/var/cache/icecream")) {
plog('ERROR', "Failed to mount var/cache/icecream");
_clean_mounts($run, $config, $chroot);
return;
}
}
if ($run->{additional_media} && $run->{additional_media}{repository}) {
_setup_additional_media($run, $config, $chroot) or return;
}
1;
}
sub _setup_additional_media {
my ($run, $config, $chroot) = @_;
my $rep = $run->{additional_media}{repository};
return 1 if !urpm::is_local_url($rep);
my $mount_point = "$chroot/urpmi_medias";
my $url = urpm::file_from_local_url($rep);
sudo($config, '--mkdir', '-p', $mount_point);
if (!sudo($config, '--bindmount', $url, $mount_point)) {
plog('ERROR', "Failed to mount $url on $mount_point");
_clean_mounts($run, $config, $chroot);
return;
}
1;
}
sub _clean_mounts {
my ($run, $config, $chroot) = @_;
sudo($config, "--umount", "$chroot/proc");
sudo($config, "--umount", "$chroot/dev/pts");
if ($run->{icecream}) {
sudo($config, "--umount", "$chroot/var/cache/icecream");
}
}
sub dump_rpmmacros {
my ($run, $config, $file) = @_;
my $f;
#plog("adding rpmmacros to $file");
my $tmpfile = "/tmp/rpmmacros";
if (!open $f, ">$tmpfile") {
plog("ERROR: could not open $tmpfile ($!)");
return 0;
}
my $packager = $run->{packager} || $config->{packager};
print $f qq(\%_topdir \%(echo \$HOME)/rpm
\%_tmppath \%(echo \$HOME)/rpm/tmp/
\%distribution $config->{distribution}
\%vendor $config->{vendor}
\%packager $packager
);
print $f join "\n", @{$run->{rpmmacros}} if defined $run->{rpmmacros};
close $f;
my $ret = sudo($config, '--cp', $tmpfile, $file);
unlink $tmpfile;
if (!$ret) {
plog("ERROR: could not write $file ($!)");
return 0;
}
1;
}
sub add_local_user {
my ($chroot_tmp, $run, $config, $luser, $uid) = @_;
# change the builder user to the local user id
# FIXME it seems that unionfs does not handle well the change of the
# uid of files
# if (system(qq|sudo chroot $chroot_tmp usermod -u $run->{uid} builder|)) {
if ($uid) {
if (!sudo($config, "--useradd", $chroot_tmp, $luser, $uid)) {
plog('ERROR', "ERROR: setting userid $uid to $luser in " .
"$chroot_tmp failed");
return;
}
} else {
# the program has been launch as root, setting the home to /home/root for compatibility
system($sudo, 'chroot', $chroot_tmp, 'usermod', '-d', "/home/$luser", '-u', $uid, '-o', '-l', $luser, 'root');
}
dump_rpmmacros($run, $config, "$chroot_tmp/home/$luser/.rpmmacros") or return;
1;
}
sub create_temp_chroot {
my ($run, $config, $chroot_tmp, $chroot_tar) = @_;
plog("Install new chroot");
plog('DEBUG', "... in $chroot_tmp");
clean_chroot($chroot_tmp, $chroot_tar, $run, $config) or return;
$chroot_tmp;
}
sub remove_chroot {
my ($run, $dir, $func, $prefix) = @_;
plog("Remove existing chroot");
plog('DEBUG', "... dir $dir all $run->{clean_all} prefix $prefix");
if ($run->{clean_all}) {
opendir(my $chroot_dir, $dir);
foreach (readdir $chroot_dir) {
next if !-d "$dir/$_" || /\.{1,2}/;
plog("cleaning old chroot for $_ in $dir");
$func->($run, "$dir/$_", $prefix);
}
} else {
foreach my $user (@{$run->{clean}}) {
plog("cleaning old chroot for $user in $dir");
$func->($run, "$dir/$user", $prefix);
}
}
}
sub clean_all_chroot_tmp {
my ($run, $chroot_dir, $prefix) = @_;
plog(1, "cleaning all old chroot remaining dir in $chroot_dir");
my $dir;
if (!opendir $dir, $chroot_dir) {
plog("ERROR: can't open $chroot_dir ($!)");
return;
}
foreach (readdir($dir)) {
/$prefix/ or next;
clean_chroot_tmp($run, $chroot_dir, $_);
}
closedir $dir;
}
sub clean_chroot_tmp {
my ($run, $chroot_dir, $dir) = @_;
my $d = "$chroot_dir/$dir";
foreach my $m ('proc', 'dev/pts', 'urpmi_medias', 'var/cache/icecream') {
if (system("$sudo umount $d/$m &>/dev/null") && $run->{verbose} > 1) {
plog("ERROR: could not umount /$m in $d/");
# FIXME: <mrl> We can't go on, otherelse we will remove something
# that we shouldn't. But for that, we should:
# a) Check for all mount-points inside the chroot
# b) Try to unmount only the needed ones, otherelse the errors
# can be misleading.
}
}
plog(1, "cleaning $d");
system("$sudo /sbin/fuser -k $d &> /dev/null");
plog(1, "removing $d");
system($sudo, 'rm', '-rf', $d);
}
sub check_mounted {
my ($mount_point, $type) = @_;
my $mount;
if (!open $mount, '/proc/mounts') {
plog("ERROR: could not open /proc/mounts");
return;
}
$mount_point =~ s,//+,/,g;
local $_;
while (<$mount>) {
return 1 if /^\w+ $mount_point $type /;
}
0;
}
sub create_build_chroot {
my ($chroot, $chroot_tar, $run, $config) = @_;
create_chroot($chroot, $chroot_tar, $run, $config,
{ packages => $config->{basesystem_packages} });
}
sub check_chroot_need_update {
my ($tmp_chroot, $run) = @_;
my @installed_pkgs = grep { !/^gpg-pubkey/ } chomp_(cat_("$tmp_chroot/var/log/qa"));
my @available_pkgs = chomp_(`urpmq --use-distrib $run->{urpmi}{distrib_url} --list -f 2>/dev/null`);
my @removed_pkgs = difference2(\@installed_pkgs, \@available_pkgs);
if (@installed_pkgs) {
if (@removed_pkgs) {
plog('DEBUG', "changed packages: @removed_pkgs");
plog('NOTIFY', "Rebuilding chroot tarball");
return 1;
} else {
plog('NOTIFY', "chroot tarball is already up-to-date");
return 0;
}
} else {
plog('DEBUG', "can't open $tmp_chroot/var/log/qa");
plog('ERROR', "can't check chroot, recreating");
return 1;
}
}
sub create_chroot {
my ($chroot, $chroot_tar, $run, $config, $opt) = @_;
my $tmp_chroot = mktemp("$chroot.tmp.XXXXXX");
my $rebuild;
my $clean = sub {
plog("Remove temporary chroot");
sudo($config, '--rm', '-r', $tmp_chroot);
};
plog('NOTIFY', "creating chroot");
plog('DEBUG', "... with packages " . join(', ', @{$opt->{packages}}));
mkdir_p($tmp_chroot);
if (!-f $chroot_tar) {
plog("rebuild chroot tarball");
$rebuild = 1;
} else {
plog('DEBUG', "decompressing /var/log/qa from $chroot_tar in $tmp_chroot");
sudo($config, '--untar', $chroot_tar, $tmp_chroot, "./var/log/qa");
$rebuild = check_chroot_need_update($tmp_chroot, $run);
}
if ($rebuild) {
sudo($config, '--rm', '-r', $chroot);
if (!build_chroot($run, $config, $tmp_chroot, $opt)) {
plog('NOTIFY', "creating chroot failed.");
$clean->();
return;
}
sudo($config, "--tar", $chroot_tar, $tmp_chroot);
}
if (!-d $chroot) {
plog('DEBUG', "recreate chroot $chroot");
plog('NOTIFY', "recreate chroot");
mkdir_p $chroot;
sudo($config, '--untar', $chroot_tar, $chroot);
plog('NOTIFY', "chroot recreated in $chroot_tar (live in $chroot)");
}
$clean->();
1;
}
sub build_chroot {
my ($run, $config, $tmp_chroot, $opt) = @_;
plog('DEBUG', "building the chroot with "
. join(', ', @{$opt->{packages}}));
sudo($config, "--mkdir", "-p", "$tmp_chroot/dev/pts",
"$tmp_chroot/etc/sysconfig", "$tmp_chroot/proc",
"$tmp_chroot/var/lib/rpm");
#system(qq($sudo sh -c "echo 127.0.0.1 localhost > $tmp_chroot/etc/hosts"));
# warly some program perform a gethostbyname(hostname) and in the cluster the
# name are not resolved via DNS but via /etc/hosts
sudo($config, '--cp', "/etc/hosts", "$tmp_chroot/etc/");
sudo($config, '--cp', "/etc/resolv.conf", "$tmp_chroot/etc/");
# install chroot
my $urpmi = $run->{urpmi};
if ($urpmi->{use__urpmi_root}) {
if (!$urpmi->add_media__urpmi_root($tmp_chroot, $config->{base_media})) {
plog('ERROR', "urpmi.addmedia --urpmi-root failed");
return 0;
}
}
$urpmi->set_command($tmp_chroot);
# (blino) install meta-task first for prefer.vendor.list to be used
foreach my $packages ([ 'meta-task' ], $opt->{packages}) {
if (!$urpmi->install_packages(
"chroot",
$tmp_chroot,
$run->{local_spool},
{},
'initialize',
"[ADMIN] creation of initial chroot failed on $run->{my_arch}",
{ maintainer => $config->{admin} },
@$packages
)) {
plog('ERROR', "Failed to install initial packages during chroot creation.");
return 0;
}
}
# <mrl> URPMI saying ok or not, we check this anyway. So that's why
# it's outside the else.
if (! -f "$tmp_chroot/usr/bin/rpmbuild") {
plog(1, "ERROR: rpm-build is missing!");
return 0;
}
# remove files used by --urpmi-root
sudo($config, "--rm", "$tmp_chroot/etc/urpmi/urpmi.cfg");
sudo($config, "--rm", "$tmp_chroot/var/lib/urpmi/*");
# rpm is not running as root and cannot directly write to $tmp_chroot/var/log/qa
system("rpm -qa --root $tmp_chroot --qf '\%{NAME}-\%{VERSION}-\%{RELEASE}.\%{ARCH}\n' | sort > $tmp_chroot/tmp/qa");
sudo($config, "--cp", "$tmp_chroot/tmp/qa", "$tmp_chroot/var/log/qa");
unlink("$tmp_chroot/tmp/qa");
sudo($config, "--mkdir", "$tmp_chroot/etc/skel/rpm/$_")
foreach "", qw(RPMS BUILD SPECS SRPMS SOURCES tmp);
#
# CM: Choose a sub-500 uid to prevent collison with $luser
#
sudo($config, "--useradd", $tmp_chroot, 'builder', 499);
# FIXME: <mrl> Be careful! Damn ugly hack right below!
sudo($config, "--rm", "$tmp_chroot/var/lib/rpm/__db*");
sudo($config, "--umount", "$tmp_chroot/proc");
sudo($config, "--umount", "$tmp_chroot/dev/pts");
if ($run->{icecream}) {
sudo($config, "--umount", "$tmp_chroot/var/cache/icecream");
}
if (-d "$tmp_chroot/urpmi_medias/") {
sudo($config, "--umount", "$tmp_chroot/urpmi_medias");
}
1;
}
1;
|