josch/mmdebstrap
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if we got dpkg >= 1.20.0, then we don't have to create certain files and directories ourselves

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Johannes 'josch' Schauer 2020-08-15 18:09:06 +02:00
parent e8144b1fbb
commit dc67c1f4be
Signed by: josch
GPG key ID: F2CBA5C78FBD83E1
1 changed files with 32 additions and 10 deletions
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mmdebstrap
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@ -41,6 +41,7 @@ use POSIX qw(SIGINT SIGHUP SIGPIPE SIGTERM SIG_BLOCK SIG_UNBLOCK);
use Carp;
use Term::ANSIColor;
use Socket;
use version;
## no critic (InputOutput::RequireBriefOpen)
@ -1234,23 +1235,43 @@ sub setup {
sub run_setup() {
my $options = shift;
my $dpkgversion;
{
open my $fh, '-|', 'dpkg', '--robot',
'--version' // error "failed to fork(): $!";
chomp(
$dpkgversion = do { local $/; <$fh> }
);
close $fh;
if ($? == 0 and $dpkgversion =~ /^([0-9]+\.[0-9]+\.[0-9]+) \(\S+\)$/) {
# dpkg is new enough for the --robot option
$dpkgversion = version->new($1);
} else {
$dpkgversion = undef;
}
}
{
my @directories = (
'/etc/apt/apt.conf.d', '/etc/apt/sources.list.d',
'/etc/apt/preferences.d', '/var/cache/apt',
'/var/lib/apt/lists/partial', '/var/lib/dpkg',
'/etc/dpkg/dpkg.cfg.d/', '/tmp'
'/var/lib/apt/lists/partial', '/tmp'
);
# we need /var/lib/dpkg in case we need to write to /var/lib/dpkg/arch
push @directories, '/var/lib/dpkg';
if (not defined $dpkgversion or $dpkgversion < "1.20.0") {
push @directories, '/etc/dpkg/dpkg.cfg.d/';
}
# if dpkg and apt operate from the outside we need some more
# directories because dpkg and apt might not even be installed inside
# the chroot
if ($options->{mode} eq 'chrootless') {
push @directories,
(
'/var/log/apt', '/var/lib/dpkg/triggers',
push @directories, '/var/log/apt';
if (not defined $dpkgversion or $dpkgversion < "1.20.0") {
push @directories, '/var/lib/dpkg/triggers',
'/var/lib/dpkg/info', '/var/lib/dpkg/alternatives',
'/var/lib/dpkg/updates'
);
'/var/lib/dpkg/updates';
}
}
foreach my $dir (@directories) {
if (-e "$options->{root}/$dir") {
@ -1343,6 +1364,7 @@ sub run_setup() {
close $fh;
}
# apt-get update requires this
{
open my $fh, '>', "$options->{root}/var/lib/dpkg/status"
or error "failed to open(): $!";
@ -1351,7 +1373,7 @@ sub run_setup() {
# /var/lib/dpkg/available is required to exist or otherwise package
# removals will fail
{
if (not defined $dpkgversion or $dpkgversion < "1.20.0") {
open my $fh, '>', "$options->{root}/var/lib/dpkg/available"
or error "failed to open(): $!";
close $fh;
@ -1359,7 +1381,7 @@ sub run_setup() {
# /var/lib/dpkg/cmethopt is used by dselect
# see #930788
{
if (not defined $dpkgversion or $dpkgversion < "1.20.0") {
open my $fh, '>', "$options->{root}/var/lib/dpkg/cmethopt"
or error "failed to open(): $!";
print $fh "apt apt\n";