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|
package Iurt::Chroot;
use strict;
use base qw(Exporter);
use MDV::Distribconf::Build;
use MDK::Common;
use Iurt::Process qw(clean sudo);
use Iurt::Config qw(dump_cache_par);
use Iurt::Util qw(plog);
use File::Temp 'mktemp';
use File::Path 'mkpath';
our @EXPORT = qw(
clean_chroot_tmp
clean_unionfs
clean_all_chroot_tmp
clean_all_unionfs
clean_chroot
dump_rpmmacros
add_local_user
create_temp_chroot
remove_chroot
create_chroot
create_buid_chroot
check_chroot
check_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, $o_only_tar) = @_;
plog('DEBUG', "clean chroot");
if (-d $chroot && !$o_only_tar) {
system("$sudo umount $chroot/proc &> /dev/null");
system("$sudo umount $chroot/dev/pts &> /dev/null");
sudo($run, $config, '--rm', '-r', $chroot);
}
return 1 if $o_only_clean;
mkdir $chroot;
# various integrity checking
return 1 if $o_only_tar && -f "$chroot/home/builder/.rpmmacros" && -d "$chroot/home/builder" && -d "$chroot/proc";
chdir $chroot;
system($sudo, 'tar', 'xf', $chroot_tar) and create_build_chroot($chroot, $chroot_tar, $run, $config);
create_build_chroot($chroot, $chroot_tar, $run, $config) if !-d "$chroot/proc" || !-d "$chroot/home/builder";
dump_rpmmacros($run, $config, "$chroot/home/builder/.rpmmacros") or return;
system("$sudo mount none -t proc $chroot/proc &>/dev/null") and return;
system("$sudo mount none -t devpts $chroot/dev/pts &>/dev/null") and return;
1;
}
sub dump_rpmmacros {
my ($run, $config, $file) = @_;
my $f;
#plog("adding rpmmacros to $file");
if (!open $f, qq(| $sudo sh -c "cat > $file")) {
plog("ERROR: could not open $file ($!)");
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 $packager);
# need to be root for permission
}
sub add_local_user {
my ($chroot_tmp, $run, $config, $luser, $uid) = @_;
my $program_name = $run->{program_name};
# 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|)) {
# this should not be necessary as the builder user is supposed to have
# the macros already
foreach my $p ('RPMS', 'BUILD', 'SPECS', 'SRPMS', 'SOURCES') {
-d "$chroot_tmp/home/builder/rpm/$p" and next;
sudo($run, $config, "--mkdir", "$chroot_tmp/home/builder/rpm/$p");
}
dump_rpmmacros($run, $config, "$chroot_tmp/home/builder/.rpmmacros") or return;
if ($uid) {
if (system($sudo, 'chroot', $chroot_tmp, 'useradd', '-M', '-u', $uid, $luser) ||
system("$sudo chroot $chroot_tmp id $luser >/dev/null 2>&1")) {
plog('ERR', "ERROR: setting userid $uid to $luser in " .
"$chroot_tmp failed, checking the chroot");
check_build_chroot($run->{chroot_path}, $run->{chroot_tar}, $run,
$config) or return;
}
} else {
# the program has been launch as root, setting the home to /home/root for compatibility
system($sudo, 'chroot', $chroot_tmp, 'usermod', '-d', "/home/$luser", '-u', $uid, '-o', '-l', $luser, 'root');
}
if (system(qq($sudo chroot $chroot_tmp cp -R /home/builder /home/$luser))) {
plog("ERROR: could not initialized $luser directory");
return;
}
if (system(qq($sudo chroot $chroot_tmp chown -R $uid /home/$luser))) {
die "ERROR $program_name: could not initialized $luser directory\n";
}
1;
}
sub create_temp_chroot {
my ($run, $config, $cache, $union_id, $chroot_tmp, $chroot_tar, $srpm) = @_;
my $home = $config->{local_home};
my $debug_tag = $run->{debug_tag};
my $unionfs_dir = $run->{unionfs_dir};
if ($run->{unionfs_tmp}) {
my $mount_point = "$unionfs_dir/unionfs.$run->{run}.$union_id";
plog(2, "cleaning temp chroot $mount_point");
if (!clean_mnt($run, $mount_point, $run->{verbose})) {
dump_cache_par($run);
die "FATAL: can't kill remaining processes acceding $mount_point";
}
my $tmpfs;
# we cannont just rm -rf $tmpfs, this create defunct processes
# afterwards (and lock particularly hard the urpmi database)
#
$union_id = clean_unionfs($unionfs_dir, $run, $run->{run}, $union_id);
$tmpfs = "$unionfs_dir/tmpfs.$run->{run}.$union_id";
$chroot_tmp = "$unionfs_dir/unionfs.$run->{run}.$union_id";
if (!-d $tmpfs) {
if (!mkpath($tmpfs)) {
plog("ERROR: Could not create $tmpfs ($!)");
return;
}
}
if (! -d $chroot_tmp) {
if (!mkpath($chroot_tmp)) {
plog("ERROR: Could not create $chroot_tmp ($!)");
return;
}
}
if ($cache->{no_unionfs}{$srpm}) {
$run->{unionfs_tmp} = 0;
clean_chroot($chroot_tmp, $chroot_tar, $run, $config);
} else {
# if the previous package has been built without unionfs, chroot need to be cleaned
if (!$run->{unionfs_tmp}) {
clean_chroot($chroot_tmp, $chroot_tar, $run, $config);
} else {
# only detar the chroot if not already
clean_chroot($chroot_tmp, $chroot_tar, $run, $config, 0, 1);
}
$run->{unionfs_tmp} = 1;
if (system(qq($sudo mount -t tmpfs none $tmpfs &>/dev/null))) {
plog("ERROR: can't mount $tmpfs ($!)");
return;
}
if (system(qq($sudo mount -o dirs=$tmpfs=rw:$home/chroot_$run->{distro_tag}$debug_tag=ro -t unionfs none $chroot_tmp &>/dev/null))) {
plog("ERROR: can't mount $tmpfs and $home/chroot_$run->{distro_tag}$debug_tag with unionfs ($!)");
return;
}
if (system("$sudo mount -t proc none $chroot_tmp/proc &>/dev/null")) {
plog("ERROR: can't mount /proc in chroot $chroot_tmp ($!)");
return;
}
if (!-d "$chroot_tmp/dev/pts") {
if (sudo($run, $config, "--mkdir", "$chroot_tmp/dev/pts")) {
plog("ERROR: can't create /dev/pts in chroot $chroot_tmp ($!)");
return;
}
if (system($sudo, "mount", "-t", "devpts", "none", "$chroot_tmp/dev/pts &>/dev/null")) {
plog("ERROR: can't mount /dev/pts in the chroot $chroot_tmp ($!)");
return;
}
}
}
} else {
plog("Install new chroot");
plog('DEBUG', "... in $chroot_tmp");
clean_chroot($chroot_tmp, $chroot_tar, $run, $config);
}
$union_id, $chroot_tmp;
}
sub remove_chroot {
my ($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", $prefix);
}
}
}
sub clean_mnt {
my ($run, $mount_point, $verbose) = @_;
return clean($run, $mount_point, "/sbin/fuser", "$sudo /sbin/fuser -k", $verbose);
}
sub clean_all_chroot_tmp {
my ($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 $dir;
}
sub clean_unionfs {
my ($unionfs_dir, $_run, $r, $union_id) = @_;
-d "$unionfs_dir/unionfs.$r.$union_id" or return $union_id;
plog(2, "cleaning unionfs $unionfs_dir/unionfs.$r.$union_id");
my $nok = 1;
my $path = "$unionfs_dir/unionfs.$r.$union_id";
while ($nok) {
$nok = 0;
foreach my $fs ([ 'proc', 'proc' ], [ 'dev/pts', 'devpts' ]) {
my ($dir, $type) = @$fs;
if (-d "$path/$dir" && check_mounted("$path/$dir", $type)) {
plog(1, "clean_unionfs: umounting $path/$dir\n");
if (system("$sudo umount $path/$dir &>/dev/null")) {
plog("ERROR: could not umount $path/$dir");
}
}
}
foreach my $t ('unionfs', 'tmpfs') {
# unfortunately quite oftem the unionfs is busy and could not
# be unmounted
my $d = "$unionfs_dir/$t.$r.$union_id";
if (-d $d && check_mounted($d, $t)) {
$nok = 1;
system("$sudo /sbin/fuser -k $d &> /dev/null");
plog(3, "umounting $d");
if (system(qq($sudo umount $d &> /dev/null))) {
plog(2, "WARNING: could not umount $d ($!)");
return $union_id + 1;
}
}
}
}
foreach my $t ('unionfs', 'tmpfs') {
my $d = "$unionfs_dir/$t.$r.$union_id";
plog(2, "removing $d");
if (system($sudo, 'rm', '-rf', $d)) {
plog("ERROR: removing $d failed ($!)");
return $union_id + 1;
}
}
$union_id;
}
sub clean_chroot_tmp {
my ($run, $chroot_dir, $dir) = @_;
my $d = "$chroot_dir/$dir";
foreach my $m ('proc', 'dev/pts') {
if (system("$sudo umount $d/$m &>/dev/null") && $run->{verbose} > 1) {
plog("ERROR: could not umount /$m in $d/");
}
}
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 => $config->{basesystem_packages} });
}
sub create_chroot {
my ($chroot, $chroot_tar, $run, $config, $opt) = @_;
my $tmp_tar = mktemp("$chroot_tar.tmp.XXXXXX");
my $tmp_chroot = mktemp("$chroot.tmp.XXXXXX");
my $rebuild;
my $clean = sub {
plog("Remove temporary chroot tarball");
sudo($run, $config, '--rm', '-r', $tmp_chroot, $tmp_tar);
};
plog('NOTIFY', "creating chroot");
plog('DEBUG', "... with packages " . join(', ', @{$opt->{packages}}));
if (mkdir($tmp_chroot) && (!-f $chroot_tar || link $chroot_tar, $tmp_tar)) {
if (!-f $chroot_tar) {
plog("rebuild chroot tarball");
$rebuild = 1;
if (!build_chroot($run, $config, $tmp_chroot, $chroot_tar, $opt)) {
$clean->();
return;
}
} else {
plog('DEBUG', "decompressing /var/log/qa from $chroot_tar in $tmp_chroot");
system($sudo, 'tar', 'xf', $chroot_tar, '-C', $tmp_chroot, "./var/log/qa");
my $qa;
if (open $qa, "$tmp_chroot/var/log/qa") {
my $ok;
my $f;
while (!$ok && ($f = <$qa>)) {
chomp $f;
if (!-f "$config->{basesystem_media_root}/media/$config->{basesystem_media}/$f") {
plog('DEBUG', "$f has changed");
plog('NOTIFY', "Rebuilding chroot tarball");
$rebuild = 1;
sudo($run, $config, '--rm', '-r', $tmp_chroot);
mkdir $tmp_chroot;
if (!build_chroot($run, $config, $tmp_chroot, $chroot_tar, $opt)) {
$clean->();
return;
}
$ok = 1;
}
}
} else {
plog('DEBUG', "can't open $tmp_chroot/var/log/qa");
plog('ERR', "can't check chroot, recreating");
if (!build_chroot($run, $config, $tmp_chroot, $chroot_tar, $opt)) {
$clean->();
return;
}
}
}
link $tmp_tar, $chroot_tar;
} else {
die "FATAL: could not initialize chroot ($!)\n";
}
if (!-d $chroot || $rebuild) {
plog('DEBUG', "recreate chroot $chroot");
plog('NOTIFY', "recreate chroot");
my $urpmi = $run->{urpmi};
$urpmi->clean_urpmi_process($chroot);
sudo($run, $config, '--rm', '-r', $chroot, $tmp_tar);
mkdir_p $chroot;
system($sudo, 'tar', 'xf', $chroot_tar, '-C', $chroot);
plog('NOTIFY', "chroot recreated in $chroot_tar (live in $chroot)");
}
$clean->();
1;
}
sub build_chroot {
my ($run, $config, $tmp_chroot, $chroot_tar, $opt) = @_;
plog('DEBUG', "building the chroot with "
. join(', ', @{$opt->{packages}}));
sudo($run, $config, "--mkdir", "-p", "$tmp_chroot/dev/pts",
"$tmp_chroot/etc/sysconfig", "$tmp_chroot/proc");
# create empty files
foreach ('/etc/ld.so.conf', '/etc/mtab') {
system($sudo, 'touch', "$tmp_chroot$_");
}
system($sudo, 'mknod', "$tmp_chroot/dev/null", 'c', 1, 3);
system("$sudo chmod a+rw $tmp_chroot/dev/null");
#system(qq($sudo sh -c "echo 127.0.0.1 localhost > $tmp_chroot/etc/hosts"));
# warly some program perform a gethostbyname(hostname) and in the cluster the
# name are not resolved via DNS but via /etc/hosts
sudo($run, $config, '--cp', "/etc/hosts", "$tmp_chroot/etc/");
sudo($run, $config, '--cp', "/etc/resolv.conf", "$tmp_chroot/etc/");
sudo($run, $config, "--initdb", $tmp_chroot);
# install chroot
my $urpmi = $run->{urpmi};
$urpmi->set_command($tmp_chroot);
# 20060826 warly urpmi --root does not work properly
$urpmi->install_packages(
"chroot",
$tmp_chroot,
$run->{local_spool},
{},
'initialize',
"[ADMIN] creation of initial chroot failed on $run->{my_arch}",
{ maintainer => $config->{admin} },
@{$opt->{packages}}
);
if (-f "$tmp_chroot/bin/rpm") {
system($sudo, 'sh', '-c', "chroot $tmp_chroot rpm -qa --qf '\%{NAME}-\%{VERSION}-\%{RELEASE}.\%{ARCH}.rpm\n' > $tmp_chroot/var/log/qa");
#
# CM: Choose a sub-500 uid to prevent collison with $luser
#
system($sudo, 'chroot', $tmp_chroot, 'adduser', '-o', '--uid', 499, 'builder');
sudo($run, $config, "--mkdir", "-p", "$tmp_chroot/home/builder/rpm");
foreach my $p (qw(RPMS BUILD SPECS SRPMS SOURCES tmp)) {
-d "$tmp_chroot/home/builder/rpm/$p" and next;
sudo($run, $config, "--mkdir", "$tmp_chroot/home/builder/rpm/$p");
}
system($sudo, 'chown', '-R', 499, "$tmp_chroot/home/builder");
sudo($run, $config, "--rm", "$tmp_chroot/var/lib/rpm/__db*");
system("$sudo umount $tmp_chroot/proc &> /dev/null");
system("$sudo umount $tmp_chroot/dev/pts &> /dev/null");
return !system($sudo, 'tar', 'czf', $chroot_tar, '-C', $tmp_chroot, '.');
}
}
sub check_build_chroot {
my ($chroot, $chroot_tar, $run, $config) = @_;
check_chroot($chroot, $chroot_tar, $run, $config,
{ packages => $config->{basesystem_packages} });
}
sub check_chroot {
my ($chroot, $chroot_tar, $run, $config, $opt) = @_;
plog('DEBUG', "checking basesystem tar");
my (@stat) = stat $chroot_tar;
if (time -$stat[9] > 604800) {
plog('WARN', "chroot tarball too old, force rebuild");
sudo($run, $config, '--rm', '-r', $chroot, $chroot_tar);
}
create_chroot($chroot, $chroot_tar, $run, $config, $opt);
}
sub clean_all_unionfs {
my ($run, $unionfs_dir) = @_;
plog(2, "Cleaning old unionfs remaining dir in $unionfs_dir");
my $dir;
if (!opendir $dir, $unionfs_dir) {
plog(0, "FATAL could not open $unionfs_dir ($!)");
return;
}
foreach (readdir $dir) {
/unionfs\.((?:0\.)?\d+)\.(\d*)$/ or next;
clean_unionfs($unionfs_dir, $run, $1, $2);
}
closedir $dir;
}
1;
|