Initial commit.
This commit is contained in:
commit
dc45472bcc
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#!/usr/bin/env perl
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use v5.36.0;
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use strict;
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use warnings;
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use utf8;
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use GnuPG;
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use Path::Tiny;
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use Mojo::UserAgent;
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my $target_dir = shift @ARGV or die 'No target dir passed.';
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my $gpg_temp_dir = Path::Tiny::tempdir;
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my $gpg_bin = 'gpg';
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my @args = ( '--command-fd', '0', '--homedir', $gpg_temp_dir );
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my $gentoo_pk_id = '13EBBDBEDE7A12775DFDB1BABB572E0E2D182910';
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my $stage_destination = path('stage.tar.xz');
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my $stage_destination_asc = path($stage_destination . '.asc');
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_doNothingIfTargetDirExists($target_dir);
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_fetchKey($gentoo_pk_id);
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_trustKey($gentoo_pk_id);
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_downloadGentooStage($stage_destination, $stage_destination_asc);
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_verifyStage($stage_destination_asc);
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_extractStageIntoTarget($target_dir, $stage_destination);
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sub _extractStageIntoTarget($target, $stage) {
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system 'mkdir', $target;
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system 'sudo', 'tar', '-xpvf', $stage, '-C', $target, '--numeric-owner', q/--xattrs-include='*.*'/;
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}
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sub _doNothingIfTargetDirExists($target) {
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if (-e $target) {
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die "$target exists, doing nothing.";
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}
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}
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sub _verifyStage($stage_asc) {
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my $return_code = system $gpg_bin, @args, '--verify', $stage_asc;
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if ($return_code != 0) {
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die 'Signature is not valid, maybe someone is trying to eavesdrop your connection?';
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}
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}
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sub _downloadGentooStage($stage, $stage_asc) {
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if (-e $stage && -e $stage_asc) {
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return;
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}
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my $ua = Mojo::UserAgent->new;
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my $dom = $ua->get('https://www.gentoo.org/downloads/')->result->dom;
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for my $h4 ($dom->find('h4')->each) {
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next if $h4->text !~ /Stage/;
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my @next_list_groups = $h4->following('div.list-group')->each;
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my $url = $next_list_groups[0]->at('a')->attr('href');
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$stage->spew_raw($ua->get($url)->result->body);
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$stage_asc->spew_raw($ua->get($url . '.asc')->result->body);
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last;
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}
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}
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sub _fetchKey ($key) {
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my $return_code = system $gpg_bin, @args, '--recv-keys', $key;
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if ( $return_code != 0 ) {
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die 'Unable to fetch gentoo gpg key.';
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}
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}
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sub _trustKey ($key) {
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open( my $fh, '|-', $gpg_bin, @args, '--edit-key', $key, 'trust' );
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say $fh 5;
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say $fh 'y';
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close $fh;
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my $return_code = $?;
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if ( $return_code != 0 ) {
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die 'Unable to trust gentoo gpg key.';
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}
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}
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[DEFAULT]
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main-repo = gentoo
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[gentoo]
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location = /var/db/repos/gentoo
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sync-type = rsync
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sync-uri = rsync://rsync.gentoo.org/gentoo-portage
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auto-sync = yes
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sync-rsync-verify-jobs = 1
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sync-rsync-verify-metamanifest = yes
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sync-rsync-verify-max-age = 24
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sync-openpgp-key-path = /usr/share/openpgp-keys/gentoo-release.asc
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sync-openpgp-keyserver = hkps://keys.gentoo.org
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sync-openpgp-key-refresh-retry-count = 40
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sync-openpgp-key-refresh-retry-overall-timeout = 1200
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sync-openpgp-key-refresh-retry-delay-exp-base = 2
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sync-openpgp-key-refresh-retry-delay-max = 60
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sync-openpgp-key-refresh-retry-delay-mult = 4
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sync-webrsync-verify-signature = yes
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# These settings were set by the catalyst build script that automatically
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# built this stage.
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# Please consult /usr/share/portage/config/make.conf.example for a more
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# detailed example.
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COMMON_FLAGS="-O2 -pipe"
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CFLAGS="${COMMON_FLAGS}"
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CXXFLAGS="${COMMON_FLAGS}"
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FCFLAGS="${COMMON_FLAGS}"
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FFLAGS="${COMMON_FLAGS}"
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MAKEOPTS="-j12"
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FEATURES="buildpkg"
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# NOTE: This stage was built with the bindist Use flag enabled
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# This sets the language of build output to English.
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# Please keep this setting intact when reporting bugs.
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LC_MESSAGES=C.utf8
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@ -0,0 +1,205 @@
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#!/usr/bin/env perl
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use v5.36.0;
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use strict;
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use warnings;
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use utf8;
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use Path::Tiny;
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main();
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sub main {
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die 'Must be superuser.' if $< != 0;
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my $target_dir = shift @ARGV or die 'No target dir passed.';
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my $rebuild_bin = shift @ARGV // 0;
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$target_dir = path($target_dir);
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my $gentoo_conf = path('gentoo.conf');
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my $make_conf = path('make.conf');
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my $resolv_conf = path('/etc/resolv.conf');
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my $zz_use = path('zz-use');
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my $packages = _readPackagesToInstall();
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_checkValidSystem($target_dir);
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my $make_conf_changed = _installMakeConf( $target_dir, $make_conf );
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_installGentooConf($target_dir, $gentoo_conf);
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_installResolvConf($target_dir,$resolv_conf);
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my $package_use_changed = _installPackageUse($target_dir, $zz_use);
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_mountNecessaryFilesystems($target_dir);
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_webrsync($target_dir);
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if ($rebuild_bin && $package_use_changed || $make_conf_changed) {
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_rebuildBinaries($target_dir);
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}
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_installNeededPackages($target_dir, $packages);
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}
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sub _rebuildBinaries($target) {
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_forkWait() or return;
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_chroot($target);
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my $return_code = system 'emerge', '-e', '@system';
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if ($return_code != 0) {
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die 'Unable to rebuild binaries for system.';
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}
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my $return_code = system 'emerge', '-e', '@world';
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if ($return_code != 0) {
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die 'Unable to rebuild binaries for world.';
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}
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}
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sub _installNeededPackages($target, $packages) {
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_forkWait() or return;
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_chroot($target);
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my $return_code = system 'emerge', '--noreplace', @$packages;
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if ($return_code != 0) {
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exit $return_code;
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}
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exit 0;
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}
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sub _readPackagesToInstall {
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my @packages;
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open my $fh, '<', 'packages';
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while (my $line = <$fh>) {
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chomp $line;
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push @packages, $line;
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}
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close $fh;
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return \@packages;
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}
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sub _forkWait {
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my $pid = fork;
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if ($pid) {
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wait;
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my $return_code = $?;
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if ($? != 0) {
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exit $?;
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}
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return 0;
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}
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return 1;
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}
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sub _webrsync($target) {
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_forkWait() or return;
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_chroot($target);
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my $return_code = system 'emerge-webrsync';
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if ($return_code != 0) {
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return $return_code;
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}
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exit 0;
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}
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sub _chroot($target) {
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chroot "$target";
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chdir '/';
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}
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sub _mountNecessaryFilesystems($target) {
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my $dest_proc = $target->child('proc');
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my $dest_dev = $target->child('dev');
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my $dest_sys = $target->child('sys');
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_mountType('proc', $dest_proc) if !_checkMounted($dest_proc);
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_mountType('sysfs', $dest_sys) if !_checkMounted($dest_sys);
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_mountRbind('/dev', $dest_dev) if !_checkMounted($dest_dev);
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}
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sub _checkMounted($fs) {
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$fs = $fs->realpath;
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my $return = index(_getMounts(), $fs) != -1;
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say "$fs is mounted." if $return;
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return $return;
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}
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sub _mountRbind($source, $fs) {
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my $return_code = system 'sudo', 'mount', '--rbind', $source, $fs;
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if ($return_code != 0) {
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die "Unable to mount $fs.";
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}
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}
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{
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my $mounts;
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sub _getMounts {
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if (!defined $mounts) {
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open my $fh, '-|', 'sudo', 'mount';
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$mounts = join '', <$fh>;
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close $fh;
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}
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return $mounts;
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}
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}
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sub _mountType($fs_type, $fs) {
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my $return_code = system 'sudo', 'mount', '-t', $fs_type, $fs_type, $fs;
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if ($return_code != 0) {
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die "Unable to mount $fs.";
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}
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}
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sub _checkValidSystem ($target) {
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if ( !-d $target ) {
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die 'Target system not populated yet.';
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}
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}
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sub _installResolvConf($target, $resolv_conf) {
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my $dest_resolv_conf = $target->child('etc/resolv.conf');
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_install($resolv_conf, $dest_resolv_conf);
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}
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sub _installGentooConf($target, $gentoo_conf) {
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my $dest_gentoo_conf = $target->child('etc/portage/repos.conf/gentoo.conf');
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my $repos_conf = $dest_gentoo_conf->parent;
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my $return_code = system 'sudo', 'mkdir', '-p', $repos_conf;
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if ($return_code != 0) {
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say "Unable to create $repos_conf.";
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}
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_install($gentoo_conf, $dest_gentoo_conf);
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}
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sub _installPackageUse($target, $zz_use) {
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my $dest_zz_use = $target->child('etc/portage/package.use/zz-use');
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my $package_use = $dest_zz_use->parent;
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my $return_code = system 'sudo', 'mkdir', '-p', $package_use;
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if ($return_code != 0) {
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say "Unable to create $package_use.";
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}
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_install($zz_use, $dest_zz_use);
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}
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sub _installMakeConf ( $target, $make_conf ) {
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my $dest_make_conf = $target->child('etc/portage/make.conf');
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return _install($make_conf, $dest_make_conf);
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}
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sub _install($source, $dest) {
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if ( -e $dest
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&& _getSha512SumFile($dest) eq _getSha512SumFile($source) )
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{
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say "$source is already installed, skipping.";
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return;
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}
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say "Target $source differs, installing...";
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my $return_code = system 'sudo', 'cp', '-L', $source, $dest;
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if ( $return_code != 0 ) {
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die "Unable to install $dest";
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}
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return 1;
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}
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sub _getSha512SumFile ($file) {
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open my $fh, '-|', 'sha512sum', $file;
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my $text = <$fh>;
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close $fh;
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my ($sha512sum) = $text =~ /^(\S+)/;
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return $sha512sum;
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}
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