Starting qemu-image creation.

build_packages

@@ -0,0 +1 @@
+syslinux

generate_qemu_img.pl

@@ -0,0 +1,75 @@
+#!/usr/bin/env perl
+
+use v5.36.0;
+
+use strict;
+use warnings;
+use utf8;
+
+use Path::Tiny;
+use lib path(__FILE__)->parent->child('lib') . '';
+
+use BaseUtils;
+
+my $utils = BaseUtils->new;
+
+main();
+
+sub main() {
+    die 'Must be superuser.' if $< != 0;
+    my $source_dir  = shift @ARGV or die 'No source dir passed.';
+    $source_dir = path $source_dir;
+    my $dest_img = shift @ARGV // 'gentoo.qcow2';
+    if (-e $dest_img) {
+        die "Image $dest_img already exists.";
+    }
+    $dest_img = path $dest_img;
+    my $size_img = shift @ARGV // 1000;
+    umountQemuNbd();
+    modprobeNbd();
+    createQemuImage($dest_img, $size_img);
+    mountQemuNbd($dest_img);
+    createPartitionTable();
+}
+
+sub createPartitionTable {
+    open my $fh, "|-", 'fdisk', '/dev/nbd1';
+    print $fh <<'EOF';
+g
+n
+
+
++20M
+t
+1
+n
+
+
+
+w
+EOF
+    close $fh;
+}
+
+sub createQemuImage($dest_img, $size_img) {
+    my $return_code = system 'qemu-img', 'create', '-f', 'qcow2', $dest_img, $size_img.'M';
+    if ($return_code != 0) {
+        die 'Unable to create qemu-img.';
+    }
+}
+
+sub modprobeNbd {
+    system 'rmmod', '-f', 'nbd';
+    system 'modprobe', 'nbd';
+}
+
+sub mountQemuNbd($dest_img) {
+    my $return_code = system 'qemu-nbd', '--connect=/dev/nbd1', $dest_img;
+    if ($return_code != 0) {
+        die 'Unable to mount qemu-nbd.';
+    }
+}
+
+sub umountQemuNbd {
+    system 'qemu-nbd', '--disconnect', '/dev/nbd1';
+}

install_system.pl

@@ -24,10 +24,34 @@ sub main() {
     $utils->createBasicMountsChroot($target_dir);
     populateDirectory($destination_dir);
     my $mnt_gentoo = $target_dir->child('mnt/gentoo');
+    $utils->createBasicMountsChroot($mnt_gentoo);
     populateDirectory($mnt_gentoo);
     $utils->mountRbind($destination_dir, $mnt_gentoo);
     my $packages = $utils->readPackagesToInstall();
     $utils->execChroot($target_dir, 'emerge', '--root', '/mnt/gentoo', '--noreplace', '-K', @$packages);
+    $utils->execChroot($mnt_gentoo, 'rc-update add nginx default');
+    _installEfiSyslinux($target_dir, $mnt_gentoo);
+}
+
+sub _installEfiSyslinux($target_dir, $mnt_gentoo) {
+    my @files = grep { -f $_ } $target_dir->child('usr/share/syslinux/efi64')->children;
+    my $syslinux_dir = $mnt_gentoo->child('boot/efi/EFI/BOOT');
+    $syslinux_dir->mkpath;
+    for my $file (@files) {
+        if ($file =~ /\.efi$/i) {
+            my $return_code = system 'cp', '-v', $file, $syslinux_dir->child('BOOTx64.EFI');
+            _errIfSyslinuxFail($return_code);
+            next;
+        }
+        my $return_code = system 'cp', '-v', @files, $syslinux_dir;
+        _errIfSyslinuxFail($return_code);
+    }
+}
+
+sub _errIfSyslinuxFail($return_code) {
+    if ($return_code != 0) {
+        die 'Unable to install syslinux EFI files.';
+    }
 }
 
 sub populateDirectory($dir) {

lib/BaseUtils.pm

@@ -76,11 +76,26 @@ sub readPackagesToInstall {
     return \@packages;
 }
 
+sub readBuildPackagesToInstall {
+    my @packages;
+    open my $fh, '<', path(__FILE__)->parent->parent->child('build_packages');
+    while ( my $line = <$fh> ) {
+        chomp $line;
+        push @packages, $line;
+    }
+    close $fh;
+    return \@packages;
+}
+
 sub createBasicMountsChroot ($self, $target) {
     my $dest_proc = $target->child('proc');
     my $dest_dev  = $target->child('dev');
     my $dest_sys  = $target->child('sys');
 
+    $dest_proc->mkpath;
+    $dest_dev->mkpath;
+    $dest_sys->mkpath;
+
     $self->mountType( 'proc',  $dest_proc );
     $self->mountType( 'sysfs', $dest_sys );
     $self->mountRbind( '/dev', $dest_dev );

make.conf

@@ -8,8 +8,10 @@ CXXFLAGS="${COMMON_FLAGS}"
 FCFLAGS="${COMMON_FLAGS}"
 FFLAGS="${COMMON_FLAGS}"
 MAKEOPTS="-j12"
-FEATURES="buildpkg"
+FEATURES="buildpkg nodoc noman -nostrip"
-USE="-ncurses"
+LINGUAS="en"
+L10N="en-GB"
+USE="-ncurses -doc"
 
 # NOTE: This stage was built with the bindist Use flag enabled
 

packages

@@ -2,3 +2,5 @@ nginx
 bash
 coreutils
 perl
+openrc
+gentoo-kernel

prepare_system.pl

@@ -28,6 +28,7 @@ sub main {
     my $zz_use      = path('zz-use');
 
     my $packages = $utils->readPackagesToInstall();
+    my $build_packages = $utils->readBuildPackagesToInstall();
     _checkValidSystem($target_dir);
 
     _installMakeConf( $target_dir, $make_conf );
@@ -38,22 +39,20 @@ sub main {
     $utils->createBasicMountsChroot($target_dir);
     _webrsync($target_dir);
     _removePerlCleanerDep($target_dir);
-    if ( $rebuild_bin ) {
-        _rebuildBinaries($target_dir);
-    }
     _updateSystem($target_dir);
     _depclean($target_dir);
-    _installNeededPackages( $target_dir, $packages );
+    _installNeededPackages( $target_dir, $packages, $build_packages, $rebuild_bin );
 }
 
-sub _removePerlCleanerDep($target) {
+sub _removePerlCleanerDep ($target) {
-    my $path = 'var/db/repos/gentoo/dev-lang/perl';
+    my $path            = 'var/db/repos/gentoo/dev-lang/perl';
     my $perl_ebuild_dir = $target->child($path);
-    for my $file ($perl_ebuild_dir->children) {
+    for my $file ( $perl_ebuild_dir->children ) {
-        next if ! -f $file;
+        next if !-f $file;
         next if $file !~ /\.ebuild$/;
         system 'sed', '-i', '/perl-cleaner/d', $file;
-        $utils->execChroot($target, 'ebuild', "/$path/@{[$file->basename]}", 'manifest');
+        $utils->execChroot( $target, 'ebuild', "/$path/@{[$file->basename]}",
+            'manifest' );
     }
 }
 
@@ -83,15 +82,14 @@ sub _rebuildBinaries ($target) {
     }
 }
 
-sub _installNeededPackages ( $target, $packages ) {
+sub _installNeededPackages ( $target, $packages, $build_packages, $rebuild_bin ) {
     my $return_code =
-      $utils->execChroot( $target, 'emerge', '--noreplace', @$packages );
+      $utils->execChroot( $target, 'emerge', ( $rebuild_bin ? ('-e') : ('--noreplace', ) ), @$packages, @$build_packages );
     if ( $return_code != 0 ) {
         die 'Unable to install needed packages.';
     }
 }
 
-
 sub _webrsync ($target) {
     my $return_code = $utils->execChroot( $target, 'emerge-webrsync' );
     if ( $return_code != 0 ) {

zz-use

@@ -1,2 +1,2 @@
 app-misc/mime-types nginx
-
+sys-kernel/gentoo-kernel -initramfs