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|
#!/usr/bin/perl
#
# Destroy a chroot created by sbuild-createchroot
#
# Copyright © 2016 Johannes Schauer Marin Rodrigues <josch@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see
# <http://www.gnu.org/licenses/>.
#
#######################################################################
use strict;
use warnings;
package Conf;
sub setup {
my $conf = shift;
my %destroychroot_keys = (
'CHROOT_SUFFIX' => {
DEFAULT => '-sbuild'
},
);
$conf->set_allowed_keys(\%destroychroot_keys);
}
package Options;
use Sbuild::OptionsBase;
use Sbuild::Conf qw();
BEGIN {
use Exporter ();
our (@ISA, @EXPORT);
@ISA = qw(Exporter Sbuild::OptionsBase);
@EXPORT = qw();
}
sub set_options {
my $self = shift;
$self->add_options(
"chroot-suffix=s" => sub {
$self->set_conf('CHROOT_SUFFIX', $_[1]);
},
"arch=s" => sub {
$self->set_conf('BUILD_ARCH', $_[1]);
},
);
}
package main;
use POSIX;
use Getopt::Long qw(:config no_ignore_case auto_abbrev gnu_getopt);
use Sbuild qw(usage_error);
use Sbuild::Utility;
use Sbuild::ChrootInfoSchroot;
my $conf = Sbuild::Conf::new();
Conf::setup($conf);
exit 1 if !defined($conf);
my $options = Options->new($conf, "sbuild-destroychroot", "8");
exit 1 if !defined($options);
usage_error("sbuild-destroychroot",
"Incorrect number of options") if (scalar @ARGV != 1);
my $chroot = Sbuild::Utility::get_dist($ARGV[0]);
my $chroot_info = Sbuild::ChrootInfoSchroot->new($conf);
my $session = $chroot_info->create("source",
$chroot,
undef, # TODO: Add --chroot option
$conf->get('BUILD_ARCH'));
if (!defined $session) {
die "Error creating chroot info\n";
}
my $chroot_id = $session->get('Chroot ID');
$chroot_id =~ s/^source://;
opendir my $dir, "/etc/schroot/chroot.d" or die "Cannot open /etc/schroot/chroot.d: $!";
my @files = readdir $dir;
closedir $dir;
my $config_path;
foreach my $file (@files) {
my $ininame = "/etc/schroot/chroot.d/$file";
-f $ininame || next;
open F, $ininame or die "cannot open $ininame\n";
my $firstline = <F>;
chomp $firstline;
close F;
$firstline eq "[$chroot_id]" || next;
$config_path = $ininame;
last;
}
if (! defined $config_path) {
die "Cannot find configuration file for $chroot_id in /etc/schroot/chroot.d\n";
}
my $chroot_type;
my $chroot_path;
open F, $config_path or die "cannot open $config_path\n";
while (<F>) {
if (/^type=(.*)/) {
$chroot_type = $1;
}
if (/^directory=(.*)/) {
$chroot_path = $1;
}
if (/^file=(.*)/) {
$chroot_path = $1;
}
}
close F;
if (! defined $chroot_type) {
die "type key missing from config\n";
}
if (! defined $chroot_path) {
die "directory or file key missing from config\n";
}
if ($chroot_type ne "file" && $chroot_type ne "directory") {
die "unknown chroot type: $chroot_type\n";
}
print "Before deleting the chroot, make sure that it is not in use anymore.\n";
print "Specifically, make sure that no open schroot session is using it\n";
print "anymore by running:\n";
print "\n";
print " schroot --all-sessions --list\n";
print "\n";
if ($chroot_type eq "directory") {
print "Make sure that no other process is using the chroot directory anymore, \n";
print "for example by running:\n";
print "\n";
print " lsof $chroot_path\n";
print "\n";
print "Delete the chroot, for example by running:\n";
print "\n";
print " rm --recursive --one-file-system $chroot_path\n";
print "\n";
if (-e "$Sbuild::Sysconfig::paths{'SBUILD_SYSCONF_DIR'}/chroot/$chroot") {
print "Delete the chroot link, for example by running:\n";
print "\n";
print " rm $Sbuild::Sysconfig::paths{'SBUILD_SYSCONF_DIR'}/chroot/$chroot\n";
print "\n";
}
} else {
print "Delete the tarball, for example by running:\n";
print "\n";
print " rm $chroot_path\n";
print "\n";
}
print "Finally, delete the schroot configuration file, for example by running:\n";
print "\n";
print " rm $config_path\n";
print "\n";
|
