/usr/bin/gen-preseed is in installation-report 2.54ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | #!/usr/bin/perl
=head1 NAME
gen-preseed -- output preseed based on installation debconf DB
=head1 SYNOPSIS
gen-preseed
=head1 DESCRIPTION
Output a preseed file based on the installation debconf DB.
This requires /var/log/installer/cdebconf to exist.
=cut
use strict;
use warnings;
use Debconf::Db;
use Debconf::Template;
use Debconf::Question;
# A bit of a hack..
my $di_path;
if (-d "/var/log/installer") {
$di_path="/var/log/installer/cdebconf";
} else {
$di_path="/var/log/debian-installer/cdebconf";
}
if (! -f "$di_path") {
print("Unable to find debconf database: $di_path\n");
exit(1);
}
Debconf::Db->load(readonly => "true");
$Debconf::Db::config=Debconf::Db->makedriver(
driver => "File",
name => "di_questions",
filename => "$di_path/questions.dat",
readonly => "true",
);
$Debconf::Db::templates=Debconf::Db->makedriver(
driver => "File",
name => "di_templates",
filename => "$di_path/templates.dat",
readonly => "true",
);
my $defaultowner="d-i";
my @blacklist = (
# No partitioning preseeding at this point
"partman-",
# d-i state
"clock-setup/system-time-changed",
"debian-installer/main-menu",
# Value depends on hardware
"netcfg/choose_interface",
# Value depends on install media
"base-installer/kernel/image",
"base-installer/kernel/override-image",
"cdrom/codename",
"cdrom-detect/cdrom_device",
"hw-detect/select_modules",
"preseed/file",
);
my $qi = Debconf::Question->iterator;
my @keys = ();
while (my $q = $qi->iterate) {
my ($name, $type, $value, $default) = ($q->name, $q->type, $q->value, $q->default);
next if ($default eq $value);
next if (! length $type || $type eq 'text' || $type eq 'title');
my $skip = 0;
foreach (@blacklist) {
if ($name =~ m/^$_/) {
$skip = 1;
}
}
next if ($skip eq 1);
if ($q->owners) {
foreach my $owner (split ", ", $q->owners) {
push(@keys, "$owner\t$name\t$type\t$value\n");
}
}
else {
push(@keys, "$defaultowner\t$name\t$type\t$value\n");
}
}
foreach(sort(@keys)) {
print "$_";
}
=head1 AUTHOR
Written by:
Stéphane Graber <stgraber@ubuntu.com>
Based on debconf-get-selections by:
Petter Reinholdtsen <pere@hungry.com>
=cut
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