From 63555aa270059488b013e6c802cca64a8d6eebdc Mon Sep 17 00:00:00 2001
From: Martin Whitaker <mageia@martin-whitaker.me.uk>
Date: Tue, 9 Jan 2018 23:17:35 +0000
Subject: draklive: allow installer GUI to be used and run as normal user.

Read all configuration from the main config file and automatically
generate the auto_inst.cfg.pl file. Run the installer GUI in a nested
X server if any items are not specified in the config file. Use sudo
to run any steps that need root privileges, to avoid running the X
server as root.
---
 lib/MGA/DrakISO/Utils.pm | 60 +++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 49 insertions(+), 11 deletions(-)

(limited to 'lib/MGA/DrakISO/Utils.pm')

diff --git a/lib/MGA/DrakISO/Utils.pm b/lib/MGA/DrakISO/Utils.pm
index 85a9892..4e85207 100644
--- a/lib/MGA/DrakISO/Utils.pm
+++ b/lib/MGA/DrakISO/Utils.pm
@@ -34,12 +34,14 @@ use IO::Select;
 
 use Exporter;
 our @ISA = qw(Exporter);
-our @EXPORT = qw(directory_usage run_ copy_or_link mount_system_fs umount_all_in_chroot);
+our @EXPORT = qw($sudo directory_usage glob__ run_ run_as_root run_in_root copy_or_link mount mount_system_fs umount_all_in_root);
+
+our $sudo = $> ? 'sudo' : '';
 
 sub directory_usage {
     my ($dir, $o_apparent) = @_;
     my $apparent = $o_apparent && "--apparent-size";
-    first(split /\s/, `du -s -B 1 $apparent $dir`);
+    first(split /\s/, `$sudo du -s -B 1 $apparent $dir`);
  }
 
 #- expand only if the pattern contains '*'
@@ -61,6 +63,34 @@ sub run_ {
     run_program::raw($options, @cmd);
 }
 
+sub run_as_root {
+    my (@cmd) = @_;
+
+    if (@cmd > 1) {
+        unshift @cmd, $sudo if $sudo;
+    } else {
+        @cmd[0] = join(' ', $sudo, @cmd[0]);
+    }
+    print "@cmd\n" if $::verbose > 2;
+    system(@cmd) == 0;
+}
+
+sub run_in_root {
+    my ($root, $arch, @cmd) = @_;
+
+    if (@cmd > 1) {
+        unshift @cmd, ( 'chroot',  $root );
+        unshift @cmd, ( 'setarch', $arch ) if $arch;
+        unshift @cmd, $sudo if $sudo;
+    } else {
+        @cmd[0] = join(' ', $sudo, if_($arch, 'setarch', $arch), 'chroot', $root, @cmd[0]);
+    }
+    print "@cmd\n" if $::verbose > 2;
+    local %ENV = %ENV;
+    $ENV{LC_ALL} = 'C';
+    system(@cmd) == 0;
+}
+
 sub device_allocate_file {
     my ($device, $size) = @_;
     run_('dd', "of=$device", 'count=0', 'bs=1', "seek=" . removeXiBSuffix($size));
@@ -93,20 +123,28 @@ sub copy_or_link {
       or die "ERROR: couldn't link $src_file to $dst_file\n";
 }
 
+sub mount {
+    my ($dst, $src, $o_options) = @_;
+    mkdir_p($dst);
+    system(join(' ', 'sudo mount', $o_options, $src, $dst)) == 0
+      or die "ERROR: failed to mount $src on $dst\n";
+}
+
 sub mount_system_fs {
-    my ($build) = @_;
-    run_('mount', '-t', 'devtmpfs', '/dev',  $build->get_system_root . '/dev');
-    run_('mount', '-t', 'proc',     '/proc', $build->get_system_root . '/proc');
-    run_('mount', '-t', 'sysfs',    '/sys',  $build->get_system_root . '/sys');
+    my ($root) = @_;
+    mount($root . '/dev',  '/dev', '--bind -o ro');
+    mount($root . '/proc', 'none', '-t proc');
+    mount($root . '/sys',  'none', '-t sysfs');
+    mount($root . '/run',  'none', '-t tmpfs');
 }
 
-sub umount_all_in_chroot {
-    my ($build) = @_;
-    my $system_root = Cwd::abs_path($build->get_system_root);
-    my @mounts = grep { $_ =~ $system_root } split("\n", cat_('/proc/mounts'));
+sub umount_all_in_root {
+    my ($root) = @_;
+    $root = Cwd::abs_path($root);
+    my @mounts = grep { $_ =~ $root } split("\n", cat_('/proc/mounts'));
     foreach (reverse(@mounts)) {
         my @field = split(' ' , $_);
-        fs::mount::umount($field[1]);
+        system(join(' ', 'sudo umount', $field[1]));
     }
 }
 
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