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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
# ResolverBase.pm: build library for sbuild
# Copyright © 2005 Ryan Murray <rmurray@debian.org>
# Copyright © 2005-2008 Roger Leigh <rleigh@debian.org>
# Copyright © 2008 Simon McVittie <smcv@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/>.
#
#######################################################################
package Sbuild::AptResolver;
use strict;
use warnings;
use Sbuild qw(debug copy);
use Sbuild::Base;
use Sbuild::ResolverBase;
BEGIN {
use Exporter ();
our (@ISA, @EXPORT);
@ISA = qw(Exporter Sbuild::ResolverBase);
@EXPORT = qw();
}
sub new {
my $class = shift;
my $conf = shift;
my $session = shift;
my $host = shift;
my $self = $class->SUPER::new($conf, $session, $host);
bless($self, $class);
return $self;
}
sub install_deps {
my $self = shift;
my $name = shift;
my @pkgs = @_;
my $status = 0;
my $session = $self->get('Session');
my $dummy_pkg_name = $self->get_sbuild_dummy_pkg_name($name);
# Call functions to setup an archive to install dummy package.
$self->log_subsubsection("Setup apt archive");
if (!$self->setup_apt_archive($dummy_pkg_name, @pkgs)) {
$self->log_error("Setting up apt archive failed\n");
return 0;
}
if (!$self->update_archive()) {
$self->log_error("Updating apt archive failed\n");
return 0;
}
$self->log_subsubsection("Install $name build dependencies (apt-based resolver)");
# Install the dummy package
my (@instd, @rmvd);
$self->log("Installing build dependencies\n");
my @apt_args = ("-yf", \@instd, \@rmvd, 'install', $dummy_pkg_name);
if (!$self->run_apt(@apt_args)) {
$self->log_error("Package installation failed\n");
if (defined ($self->get('Session')->get('Session Purged')) &&
$self->get('Session')->get('Session Purged') == 1) {
$self->log("Not removing build depends: cloned chroot in use\n");
} else {
$self->set_installed(@instd);
$self->set_removed(@rmvd);
goto package_cleanup;
}
return 0;
}
$self->set_installed(@instd);
$self->set_removed(@rmvd);
$status = 1;
package_cleanup:
if ($status == 0) {
if (defined ($session->get('Session Purged')) &&
$session->get('Session Purged') == 1) {
$self->log("Not removing installed packages: cloned chroot in use\n");
} else {
$self->uninstall_deps();
}
}
return $status;
}
sub purge_extra_packages {
my $self = shift;
my $name = shift;
my $dummy_pkg_name = $self->get_sbuild_dummy_pkg_name($name);
my $session = $self->get('Session');
# we partition the packages into those we want to mark as manual (all of
# Essential:yes plus sbuild dummy packages) and those we want to mark as
# auto
#
# We don't use the '*' glob of apt-mark because then we'd have all packages
# apt knows about in the build log.
my $pipe = $session->pipe_command({
COMMAND => [ 'dpkg-query', '--showformat', '${Essential} ${Package}\\n', '--show' ],
USER => $self->get_conf('BUILD_USER')
});
if (!$pipe) {
$self->log_error("unable to execute dpkg-query\n");
return 0;
}
my @essential;
my @nonessential;
while (my $line = <$pipe>) {
chomp $line;
if ($line !~ /^(yes|no) ([a-zA-Z0-9][a-zA-Z0-9+.-]*)$/) {
$self->log_error("dpkg-query output has unexpected format\n");
return 0;
}
# we only want to keep packages that are Essential:yes and the dummy
# packages created by sbuild. Apt takes care to also keep their
# transitive dependencies.
if ($1 eq "yes" || $2 eq $dummy_pkg_name || $2 eq $self->get_sbuild_dummy_pkg_name('core')) {
push @essential, $2;
} else {
push @nonessential, $2;
}
}
close $pipe;
if (scalar @essential == 0) {
$self->log_error("no essential packages found \n");
return 0;
}
if (scalar @nonessential == 0) {
$self->log_error("no non-essential packages found \n");
return 0;
}
if (!$session->run_command({ COMMAND => [ 'apt-mark', 'auto', @nonessential ], USER => 'root' })) {
$self->log_error("unable to run apt-mark\n");
return 0;
}
# We must mark all Essential:yes packages as manual because later on we
# must run apt with --allow-remove-essential so that apt agrees to remove
# itself and at that point we don't want to remove the Essential:yes
# packages.
if (!$session->run_command({ COMMAND => [ 'apt-mark', 'manual', @essential ], USER => 'root' })) {
$self->log_error("unable to run apt-mark\n");
return 0;
}
# apt currently suffers from bug #837066. It will never autoremove
# priority:required packages, thus we use a temporary (famous last words)
# hack here and feed apt a modified /var/lib/dpkg/status file with all
# packages marked as Priority:extra. This is a hack because
# /var/lib/dpkg/status should not be read by others than dpkg (we for
# example do not take into account the journal that way).
my $read_fh = $session->pipe_command({
COMMAND => [ 'sed', 's/^Priority: .*$/Priority: extra/', '/var/lib/dpkg/status' ],
USER => $self->get_conf('BUILD_USER')
});
if (!$read_fh) {
$session->log_error("cannot run sed\n");
return 0;
}
my $tmpfilename = $session->mktemp({ USER => $self->get_conf('BUILD_USER') });
if (!$tmpfilename) {
$session->log_error("cannot mktemp\n");
return 0;
}
my $write_fh = $session->get_write_file_handle($tmpfilename);
if (!$write_fh) {
$session->log_error("cannot open $tmpfilename for writing\n");
return 0;
}
while (read($read_fh, my $buffer, 1024)) {
print $write_fh $buffer;
}
close $read_fh;
close $write_fh;
my (@instd, @rmvd);
# apt considers itself as Essential:yes, that's why we need
# --allow-remove-essential to remove it and that's why we must explicitly
# specify to remove it.
#
# The /dev/null prevents apt from overriding the Priorities that we set in
# our modified dpkg status file by the ones it finds in the package list
# files
$self->run_apt("-yf", \@instd, \@rmvd, 'autoremove',
'apt',
'-o', 'Dir::State::Lists=/dev/null',
'-o', "Dir::State::Status=$tmpfilename",
'--allow-remove-essential');
$session->unlink($tmpfilename);
}
1;
|
